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Document and Entity Information - shares	6 Months Ended
Document and Entity Information - shares	Jul. 31, 2012	Sep. 04, 2012
Document and Entity Information [Abstract]
Entity Registrant Name	MITCHAM INDUSTRIES INC
Entity Central Index Key	0000926423
Document Type	10-Q
Document Period End Date	Jul. 31, 2012
Amendment Flag	false
Document Fiscal Year Focus	2013
Document Fiscal Period Focus	Q2
Current Fiscal Year End Date	--01-31
Entity Filer Category	Accelerated Filer
Entity Common Stock, Shares Outstanding		12,840,359

Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Jul. 31, 2012	Jan. 31, 2012
Current assets:
Cash and cash equivalents	$ 21,545	$ 15,287
Restricted cash	97	98
Accounts receivable, net	24,016	35,788
Current portion of contracts receivable	2,584	2,273
Inventories, net	6,977	6,708
Deferred tax asset	1,902	2,594
Prepaid income taxes	5,017
Prepaid expenses and other current assets	1,646	2,530
Total current assets	63,784	65,278
Seismic equipment lease pool and property and equipment, net	118,499	120,377
Intangible assets, net	4,332	4,696
Goodwill	4,320	4,320
Prepaid foreign income tax		3,519
Deferred tax asset	1,769
Other assets	578	39
Total assets	193,282	198,229
Current liabilities:
Accounts payable	3,241	13,037
Current maturities long-term debt	175	1,399
Income taxes payable		2,419
Deferred revenue	1,021	543
Accrued expenses and other current liabilities	3,668	6,583
Total current liabilities	8,105	23,981
Non-current income taxes payable	417	5,435
Deferred tax liability		595
Long-term debt, net of current maturities	12,530	12,784
Total liabilities	21,052	42,795
Shareholders' equity:
Preferred stock, $1.00 par value; 1,000 shares authorized; none issued and outstanding
Common stock, $0.01 par value; 20,000 shares authorized; 13,656 and 13,556 shares issued at July 31, 2012 and January 31, 2012, respectively	137	136
Additional paid-in capital	115,736	113,654
Treasury stock, at cost (925 shares at July 31, 2012 and January 31, 2012)	(4,857)	(4,857)
Retained earnings	54,155	39,297
Accumulated other comprehensive income	7,059	7,204
Total shareholders' equity	172,230	155,434
Total liabilities and shareholders' equity	$ 193,282	$ 198,229

Condensed Consolidated Balance Sheets (Parenthetical) (Unaudited) - $ / shares	Jul. 31, 2012	Jan. 31, 2012
Condensed Consolidated Balance Sheets [Abstract]
Preferred stock, par value	$ 1.00	$ 1.00
Preferred stock, shares authorized	1,000	1,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	20,000	20,000
Common stock, shares issued	13,656	13,556
Treasury stock, shares	925	925

Condensed Consolidated Statements of Income (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 31, 2012	Jul. 31, 2011	Jul. 31, 2012	Jul. 31, 2011
Revenues:
Equipment leasing	$ 10,882	$ 12,272	$ 31,890	$ 29,047
Lease pool equipment sales	3,204	326	5,536	661
Seamap equipment sales	7,262	6,534	17,806	14,883
Other equipment sales	1,732	2,146	2,479	3,189
Total revenues	23,080	21,278	57,711	47,780
Cost of sales:
Direct costs - equipment leasing	1,940	1,826	4,645	3,983
Direct costs - lease pool depreciation	8,437	6,703	16,831	12,793
Cost of lease pool equipment sales	1,007	107	2,411	204
Cost of Seamap and other equipment sales	4,296	4,429	9,538	8,662
Total cost of sales	15,680	13,065	33,425	25,642
Gross profit	7,400	8,213	24,286	22,138
Operating expenses:
General and administrative	5,719	5,794	11,038	10,442
Recovery of doubtful accounts		(492)	(428)	(492)
Depreciation and amortization	340	312	669	617
Total operating expenses	6,059	5,614	11,279	10,567
Operating income	1,341	2,599	13,007	11,571
Other income (expenses):
Interest, net	(96)	(95)	(101)	(270)
Other, net	29	(336)	(569)	(672)
Total other income (expenses)	(67)	(431)	(670)	(942)
Income before income taxes	1,274	2,168	12,337	10,629
Benefit (provision) for income taxes	5,128	(868)	2,521	(3,236)
Net income	$ 6,402	$ 1,300	$ 14,858	$ 7,393
Net income per common share:
Basic	$ 0.51	$ 0.12	$ 1.17	$ 0.71
Diluted	$ 0.48	$ 0.11	$ 1.12	$ 0.67
Shares used in computing net income per common share:
Basic	12,665	10,970	12,646	10,447
Diluted	13,262	11,615	13,294	11,043

Condensed Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 31, 2012	Jul. 31, 2011	Jul. 31, 2012	Jul. 31, 2011
Condensed Consolidated Statements of Comprehensive Income [Abstract]
Net income	$ 6,402	$ 1,300	$ 14,858	$ 7,393
Change in cumulative translation adjustment	(1,911)	65	(145)	2,774
Comprehensive income	$ 4,491	$ 1,365	$ 14,713	$ 10,167

- Definition

The change in equity [net assets] of a business enterprise during a period from transactions and other events and circumstances from non-owner sources which are attributable to the reporting entity. It includes all changes in equity during a period except those resulting from investments by owners and distributions to owners, but excludes any and all transactions which are directly or indirectly attributable to that ownership interest in subsidiary equity which is not attributable to the parent.

+ References + Details

- Definition

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Net Income
-URI http://asc.fasb.org/extlink&oid=6518256

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-URI http://asc.fasb.org/extlink&oid=6943989&loc=d3e3602-108585

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-04.19)
-URI http://asc.fasb.org/extlink&oid=6879464&loc=d3e573970-122913

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-URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257

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-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.18)
-URI http://asc.fasb.org/extlink&oid=6880815&loc=d3e20235-122688

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 225
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-04.22)
-URI http://asc.fasb.org/extlink&oid=6879464&loc=d3e573970-122913

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Other Comprehensive Income
-URI http://asc.fasb.org/extlink&oid=6519514

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 6
-URI http://asc.fasb.org/extlink&oid=20435746&loc=d3e565-108580

Reference 9: http://www.xbrl.org/2003/role/presentationRef
-Publisher AICPA
-Name Accounting Research Bulletin (ARB)
-Number 51
-Paragraph 38
-Subparagraph d
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 10: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 130
-Paragraph 10, 15
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 11: http://www.xbrl.org/2003/role/presentationRef
-Publisher AICPA
-Name Accounting Research Bulletin (ARB)
-Number 51
-Paragraph A7
-Appendix A

Reference 12: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Emerging Issues Task Force (EITF)
-Number 87-21
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 13: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 03
-Paragraph 19
-Article 5

Reference 14: http://www.xbrl.org/2003/role/presentationRef
-Publisher AICPA
-Name Accounting Research Bulletin (ARB)
-Number 51
-Paragraph 38
-Subparagraph a
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 15: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 95
-Paragraph 28, 29, 30
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 16: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 04
-Paragraph 20
-Article 9

+ Details

Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($)	6 Months Ended
	Jul. 31, 2012	Jul. 31, 2011
Cash flows from operating activities:
Net income	$ 14,858,000	$ 7,393,000
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	17,567,000	13,479,000
Stock-based compensation	1,064,000	937,000
Provision for doubtful accounts, net of charge offs	(17,000)
Provision for inventory obsolescence	118,000	63,000
Gross profit from sale of lease pool equipment	(3,125,000)	(457,000)
Excess tax benefit from exercise of non-qualified stock options and restricted shares	(350,000)	(394,000)
Deferred tax benefit	(1,815,000)	(109,000)
Changes in non-current income taxes payable	(5,003,000)	694,000
Changes in working capital items:
Accounts receivable	11,722,000	(2,753,000)
Contracts receivable	(850,000)	1,718,000
Inventories	(370,000)	(565,000)
Prepaid expenses and other current assets	1,109,000	(1,119,000)
Income taxes receivable and payable	(7,105,000)	(1,272,000)
Prepaid foreign income tax	3,519,000
Accounts payable, accrued expenses, other current liabilities and deferred revenue	(2,042,000)	2,023,000
Net cash provided by operating activities	29,280,000	19,638,000
Cash flows from investing activities:
Purchases of seismic equipment held for lease	(27,316,000)	(30,461,000)
Purchases of property and equipment	(485,000)	(253,000)
Sale of used lease pool equipment	5,536,000	661,000
Payment for earn-out provision		(155,000)
Net cash used in investing activities	(22,265,000)	(30,208,000)
Cash flows from financing activities:
Net payments on line of credit	(150,000)	(20,900,000)
Proceeds from equipment notes		37,000
Payments on borrowings	(1,494,000)	(2,000,000)
Net purchases of short-term investments		(101,000)
Proceeds from issuance of common stock upon exercise of options	96,000	739,000
Net proceeds from public offering of common stock (Note 8)		30,994,000
Excess tax benefit from exercise of non-qualified stock options and restricted shares	350,000	394,000
Net cash provided by (used in) financing activities	(1,198,000)	9,163,000
Effect of changes in foreign exchange rates on cash and cash equivalents	441,000	657,000
Net change in cash and cash equivalents	6,258,000	(750,000)
Cash and cash equivalents, beginning of period	15,287,000	14,647,000
Cash and cash equivalents, end of period	21,545,000	15,287,000
Supplemental cash flow information:
Interest paid	325,000	497,000
Income taxes paid	7,035,000	3,529,000
Purchases of seismic equipment held for lease in accounts payable at end of period	$ 385,000	$ 7,524,000

Basis of Presentation

6 Months Ended

Jul. 31, 2012

Basis of Presentation [Abstract]

Basis of Presentation

1.	Basis of Presentation

The condensed consolidated balance sheet as of January 31, 2012 for Mitcham Industries, Inc. (for purposes of these notes, the “Company”) has been derived from audited consolidated financial statements. The unaudited interim condensed consolidated financial statements have been prepared by the Company pursuant to the rules and regulations of the Securities and Exchange Commission (“SEC”). Certain information and footnote disclosures normally included in financial statements prepared in accordance with accounting principles generally accepted in the United States (“U.S. GAAP”) have been condensed or omitted pursuant to such rules and regulations, although the Company believes that the disclosures are adequate to make the information presented not misleading. These condensed consolidated financial statements should be read in conjunction with the consolidated financial statements and the related notes included in the Company’s Annual Report on Form 10-K for the year ended January 31, 2012. In the opinion of the Company, all adjustments, consisting only of normal recurring adjustments, necessary to present fairly the financial position as of July 31, 2012, the results of operations for the three and six months ended July 31, 2012 and 2011, and the cash flows for the six months ended July 31, 2012 and 2011, have been included in these financial statements. The foregoing interim results are not necessarily indicative of the results of operations to be expected for the full fiscal year ending January 31, 2013.

Organization

6 Months Ended

Jul. 31, 2012

Organization [Abstract]

Organization

2.	Organization

The Company was incorporated in Texas in 1987. The Company, through its wholly owned Canadian subsidiary, Mitcham Canada, ULC. (“MCL”) its wholly owned Russian subsidiary, Mitcham Seismic Eurasia LLC (“MSE”), its wholly owned Hungarian subsidiary, Mitcham Europe Ltd. (“MEL”), its wholly owned Singaporean subsidiary, Mitcham Marine Leasing Pte Ltd (“MML”) and its branch operations in Colombia and Peru, provides full-service equipment leasing, sales and service to the seismic industry worldwide. The Company, through its wholly owned Australian subsidiary, Seismic Asia Pacific Pty Ltd. (“SAP”), provides seismic, oceanographic and hydrographic leasing and sales worldwide, primarily in Southeast Asia and Australia. The Company, through its wholly owned subsidiary, Seamap International Holdings Pte, Ltd. (“Seamap”), designs, manufactures and sells a broad range of proprietary products for the seismic, hydrographic and offshore industries with manufacturing, support and sales facilities based in Singapore and the United Kingdom. All material intercompany transactions and balances have been eliminated in consolidation.

New Accounting Pronouncements

6 Months Ended

Jul. 31, 2012

New Accounting Pronouncements [Abstract]

New Accounting Pronouncements

3.	New Accounting Pronouncements

In May 2011, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) No. 2011-04, Fair Value Measurement-Topic 820: Amendments to Achieve Common Fair Value Measurement and Disclosure Requirements in U.S. GAAP and International Financial Reporting Standards, to provide a consistent definition of fair value and ensure that the fair value measurement and disclosure requirements are similar between U.S. GAAP and International Financial Reporting Standards. ASU 2011-04 changes certain fair value measurement principles and enhances disclosure requirements, particularly for Level 3 fair value measurements. ASU 2011-04 was effective in the six months ended July 31, 2012 and applied prospectively. The adoption did not have a material effect on the Company’s financial statements.

In June 2011, the FASB issued ASU No. 2011-05, Comprehensive Income-Topic 220: Presentation of Comprehensive Income, to require an entity to present the total of comprehensive income, the components of net income, and the components of other comprehensive income either in a single continuous statement of comprehensive income or in two separate but consecutive statements. ASU 2011-05 eliminates the option to present the components of other comprehensive income as part of the statement of equity. This update does not change what items are reported in other comprehensive income or the requirement to report reclassification of items from other comprehensive income to net income. ASU 2011-05 was effective in the six months ended July 31, 2012, though earlier adoption was permitted. The update was applied retrospectively upon adoption. The Company elected to present two separate but consecutive statements. The adoption of this standard did not have a material effect on the Company’s financial statements.

Restricted Cash

6 Months Ended

Jul. 31, 2012

Restricted Cash [Abstract]

Restricted Cash

4.	Restricted Cash

In connection with certain contracts, SAP has pledged approximately $97,000 in short-term time deposits as of July 31, 2012 to secure performance obligations under those contracts. The amount of security will be released as the contractual obligations are performed over the remaining terms of the contracts, which is estimated to be approximately five months. As the investment in the short-term time deposits relates to a financing activity, the securing of contract obligations, this transaction is reflected as a financing activity in the accompanying condensed consolidated statements of cash flows.

- Definition

The entire disclosure for cash and cash equivalent footnotes, which may include the types of deposits and money market instruments, applicable carrying amounts, restricted amounts and compensating balance arrangements. Cash and equivalents include: (1) currency on hand (2) demand deposits with banks or financial institutions (3) other kinds of accounts that have the general characteristics of demand deposits (4) short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Generally, only investments maturing within three months from the date of acquisition qualify.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4273-108586

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.1)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SAB TOPIC 6.H.3)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13728-122682

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Cash Equivalents
-URI http://asc.fasb.org/extlink&oid=6507016

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Cash
-URI http://asc.fasb.org/extlink&oid=6506951

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 95
-Paragraph 7
-Footnote 1
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Staff Accounting Bulletin (SAB)
-Number Topic 6
-Section H
-Subsection 3

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 1
-Article 5

Reference 9: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 95
-Paragraph 8, 9, 10
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

Balance Sheet

6 Months Ended

Jul. 31, 2012

Balance Sheet [Abstract]

Balance Sheet

5.	Balance Sheet


	July 31, 2012			January 31, 2012
	(in thousands)
Accounts receivable:
Accounts receivable	$	27,947		$	40,179
Allowance for doubtful accounts		(3,931	)		(4,391	)

Total accounts receivable, net	$	24,016		$	35,788

Contracts receivable:
Contracts receivable	$	2,584		$	2,273
Less current portion of contracts receivable		(2,584	)		(2,273	)

Long-term portion of contracts receivable, net	$	—		$	—

Contracts receivable consisted of $2,584,000 due from three customers as of July 31, 2012 and $2,273,000 due from two customers as of January 31, 2012. Contracts receivable at July 31, 2012 consisted of contracts bearing interest at an average of approximately 9% per year and with remaining repayment terms from ten to 23 months. These contracts are collateralized by the equipment sold and are considered collectable; thus, no allowances have been established for them. Subsequent to July 31, 2012, the Company converted approximately $1.7 million in contracts receivable and $700,000 in accounts receivable from one customer into a series of secured notes. The notes are due monthly through July 31, 2013 and are secured by certain equipment.


	July 31, 2012			January 31, 2012
	(in thousands)
Inventories:
Raw materials	$	3,025		$	2,789
Finished goods		3,749			3,711
Work in progress		1,224			1,109

		7,998			7,609
Less allowance for obsolescence		(1,021	)		(901	)

Total inventories, net	$	6,977		$	6,708


	July 31, 2012			January 31, 2012
	(in thousands)
Seismic equipment lease pool and property and equipment:
Seismic equipment lease pool	$	229,901		$	223,493
Land and buildings		366			366
Furniture and fixtures		8,547			8,020
Autos and trucks		680			680

		239,494			232,559
Accumulated depreciation and amortization		(120,995	)		(112,182	)

Total seismic equipment lease pool and property and equipment, net	$	118,499		$	120,377

Goodwill and Other Intangible Assets

6 Months Ended

Jul. 31, 2012

Goodwill and Other Intangible Assets [Abstract]

Goodwill and Other Intangible Assets

6.	Goodwill and Other Intangible Assets


	Weighted Average Remaining Life at 7/31/12		July 31, 2012							January 31, 2012
	Weighted Average Remaining Life at 7/31/12		Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount
			(in thousands)							(in thousands)
Goodwill			$	4,320						$	4,320

Proprietary rights		7.9	$	3,491	$	(1,473	)	$	2,018	$	3,532	$	(1,347	)	$	2,185
Customer relationships		5.6		2,397		(724	)		1,673		2,387		(572	)		1,815
Patents		5.6		722		(218	)		504		719		(172	)		547
Trade name		5.6		197		(60	)		137		196		(47	)		149

Amortizable intangible assets			$	6,807	$	(2,475	)	$	4,332	$	6,834	$	(2,138	)	$	4,696

As of July 31, 2012, the Company had goodwill of $4,320,000, all of which was allocated to the Seamap segment. No impairment has been recorded against the goodwill account.

Amortizable intangible assets are amortized over their estimated useful lives of eight to 15 years using the straight-line method. Aggregate amortization expense was $169,000 and $167,000 for the three months ended July 31, 2012 and 2011, respectively, and $338,000 and $339,000 for the six months ended July 31, 2012 and 2011, respectively. As of July 31, 2012, future estimated amortization expense related to amortizable intangible assets was estimated to be:


For fiscal years ending January 31 (in thousands):
2013	$	338
2014		669
2015		669
2016		669
2017		669
2018 and thereafter		1,318

Total	$	4,332

- Definition

The entire disclosure for the aggregate amount of goodwill and a description of intangible assets, which may include (a) for amortizable intangible assets (also referred to as finite-lived intangible assets), the carrying amount, the amount of any significant residual value, and the weighted-average amortization period, (b) for intangible assets not subject to amortization (also referred to as indefinite-lived intangible assets), the carrying amount, and (c) the amount of research and development assets acquired and written off in the period, including the line item in the income statement in which the amounts written off are aggregated, if not readily apparent from the income statement. Also discloses (a) for amortizable intangibles assets in total and by major class, the gross carrying amount and accumulated amortization, the total amortization expense for the period, and the estimated aggregate amortization expense for each of the five succeeding fiscal years, (b) for intangible assets not subject to amortization the carrying amount in total and by major class, and (c) for goodwill, in total and for each reportable segment, the changes in the carrying amount of goodwill during the period (including the aggregate amount of goodwill acquired, the aggregate amount of impairment losses recognized, and the amount of goodwill included in the gain (loss) on disposal of a reporting unit). If any part of goodwill has not been allocated to a reportable segment, discloses the unallocated amount and the reasons for not allocating. For each impairment loss recognized related to an intangible asset (excluding goodwill), discloses: (a) a description of the impaired intangible asset and the facts and circumstances leading to the impairment, (b) the amount of the impairment loss and the method for determining fair value, (c) the caption in the income statement or the statement of activities in which the impairment loss is aggregated, and (d) the segment in which the impaired intangible asset is reported. For each goodwill impairment loss recognized, discloses: (a) a description of the facts and circumstances leading to the impairment, (b) the amount of the impairment loss and the method of determining the fair value of the associated reporting unit, and (c) if a recognized impairment loss is an estimate not finalized and the reasons why the estimate is not final. May also disclose the nature and amount of any significant adjustments made to a previous estimate of an impairment loss.

+ References + Details

Long-Term Debt and Notes Payable

6 Months Ended

Jul. 31, 2012

Long-Term Debt and Notes Payable [Abstract]

Long-Term Debt and Notes Payable

7.	Long-Term Debt and Notes Payable

Long-term debt and notes payable consist of the following (in thousands):


	July 31, 2012			January 31, 2012
Revolving line of credit	$	12,400		$	12,550
Equipment note		—			638
MCL notes		31			785
SAP equipment notes		274			210

		12,705			14,183
Less current portion		(175	)		(1,399	)

Long-term debt	$	12,530		$	12,784

In July 2011, the Company entered into an amended credit agreement with First Victoria Bank (the “Bank”) that provides for borrowings of up to $35,000,000 on a revolving basis through May 31, 2013 (the “revolving credit facility”). The Company may, at its option, convert any or all balances outstanding under the revolving credit facility into a series of term notes with monthly amortization over 48 months.

Amounts available for borrowing under the revolving credit facility are determined by a borrowing base. The borrowing base is computed based upon certain outstanding accounts receivable, certain portions of the Company’s lease pool and certain lease pool assets that have been purchased with proceeds from the revolving credit facility. The revolving credit facility and any term loan are collateralized by essentially all of the Company’s domestic assets. Interest is payable monthly at the prime rate plus 50 basis points, which was 3.75% at July 31, 2012. Up to $7,000,000 of available borrowings under the revolving credit facility may be utilized to secure letters of credit. The revolving credit facility contains certain financial covenants that require, among other things, for the Company to maintain a debt to shareholders’ equity ratio of no more than 0.7 to 1.0, maintain a current assets to current liabilities ratio of not less than 1.25 to 1.0; and have quarterly earnings before interest, taxes, depreciation and amortization (“EBITDA”) of not less than $2,000,000. The revolving credit facility also provides that the Company may not incur or maintain indebtedness in excess of $1,000,000 without the prior written consent of the Bank, except for borrowings related to the revolving credit facility. The Company was in compliance with each of these provisions as of and for the quarter ended July 31, 2012. The Company’s average borrowings under the revolving credit facility for the six months ended July 31, 2012 and 2011 were approximately $15,756,000 and $17,628,000, respectively.

In August 2012, the Company entered into an amendment to the revolving credit facility. The revolving credit facility provides for the following amended terms:

•

Borrowings of up to $50 million, subject to borrowing base limitations;

•

Interest at the prime rate, with a floor of 3.25%;

•

Up to $10.0 million of available borrowings available to secure letters of credit;

•

Limitations on other debt of up to $10.0 million without the prior consent of the Bank;

•

Allows for the guaranty of subsidiary debt of up to $5.0 million without the prior consent of the Bank; and

•

Maturity of August 31, 2015.

All other terms and covenants remain unchanged.

In October 2010, the Company entered into a $3.6 million secured promissory note with a supplier in connection with the purchase of certain lease pool equipment. The note, which was repaid in March 2012, was repayable in 18 monthly installments, bore interest at 8% annually and was secured by the equipment purchased. The Company received the consent of the Bank for this transaction, as required by the terms of the revolving line of credit.

In March 2010, MCL entered into two promissory notes related to the purchase of Absolute Equipment Solutions, Inc. The notes bore interest at 6.0% per year with the first of two equal installments paid in March 2011 and the balance in March 2012.

During the year ended January 31, 2010, SAP entered into two notes payable to finance the purchase of certain equipment, which are secured by the equipment purchased. One of these notes bears interest at 7.4% and is due in 2014. The other note bears interest at 8.35% and is due in March 2013.

Public Offering of Common Stock

6 Months Ended

Jul. 31, 2012

Public Offering of Common Stock [Abstract]

Public Offering of Common Stock

8.	Public Offering of Common Stock

In June 2011, the Company completed a public offering of 2,300,000 shares of its common stock, par value $0.01. After deducting underwriting discounts and commissions and expenses of the offering, net proceeds to the Company were approximately $31.0 million.

- Definition

The entire disclosure for shareholders' equity, comprised of portions attributable to the parent entity and noncontrolling interest, if any, including other comprehensive income (as applicable). Including, but not limited to: (1) balances of common stock, preferred stock, additional paid-in capital, other capital and retained earnings; (2) accumulated balance for each classification of other comprehensive income and total amount of comprehensive income; (3) amount and nature of changes in separate accounts, including the number of shares authorized and outstanding, number of shares issued upon exercise and conversion, and for other comprehensive income, the adjustments for reclassifications to net income; (4) rights and privileges of each class of stock authorized; (5) basis of treasury stock, if other than cost, and amounts paid and accounting treatment for treasury stock purchased significantly in excess of market; (6) dividends paid or payable per share and in the aggregate for each class of stock for each period presented; (7) dividend restrictions and accumulated preferred dividends in arrears (in aggregate and per share amount); (8) retained earnings appropriations or restrictions, such as dividend restrictions; (9) impact of change in accounting principle, initial adoption of new accounting principle and correction of an error in previously issued financial statements; (10) shares held in trust for Employee Stock Ownership Plan (ESOP); (11) deferred compensation related to issuance of capital stock; (12) note received for issuance of stock; (13) unamortized discount on shares; (14) description, terms, and number of warrants or rights outstanding; (15) shares under subscription and subscription receivables, effective date of new retained earnings after quasi-reorganization and deficit eliminated by quasi-reorganization and, for a period of at least ten years after the effective date, the point in time from which the new retained dates; and (16) retroactive effective of subsequent change in capital structure.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(d),(e))
-URI http://asc.fasb.org/extlink&oid=6881521&loc=d3e23780-122690

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-Publisher FASB
-Name Accounting Standards Codification
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-Section 50
-Paragraph 4
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Reference 3: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
-Topic 310
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-Section S99
-Paragraph 2
-Subparagraph (SAB TOPIC 4.E)
-URI http://asc.fasb.org/extlink&oid=6228006&loc=d3e74512-122707

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
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-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.29-31)
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-Publisher FASB
-Name Accounting Standards Codification
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Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-Paragraph 1
-Subparagraph (SX 210.3-04)
-URI http://asc.fasb.org/extlink&oid=6959260&loc=d3e187085-122770

Reference 9: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-Publisher FASB
-Name Accounting Standards Codification
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Reference 11: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-URI http://asc.fasb.org/extlink&oid=6521494

Reference 12: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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-Name Accounting Standards Codification
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-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21564-112644

Reference 14: http://www.xbrl.org/2003/role/presentationRef
-Publisher AICPA
-Name Accounting Research Bulletin (ARB)
-Number 43
-Section B
-Paragraph 7, 11A
-Chapter 1
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 15: http://www.xbrl.org/2003/role/presentationRef
-Publisher AICPA
-Name Accounting Principles Board Opinion (APB)
-Number 12
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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 16: http://www.xbrl.org/2003/role/presentationRef
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-Name Statement of Financial Accounting Standard (FAS)
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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 17: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 08
-Paragraph d
-Article 4

Reference 18: http://www.xbrl.org/2003/role/presentationRef
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-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 29, 30, 31
-Article 5

Reference 19: http://www.xbrl.org/2003/role/presentationRef
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-Name Staff Accounting Bulletin (SAB)
-Number Topic 4
-Section E

Reference 20: http://www.xbrl.org/2003/role/presentationRef
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-Number 210
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Reference 21: http://www.xbrl.org/2003/role/presentationRef
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Reference 22: http://www.xbrl.org/2003/role/presentationRef
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Reference 23: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 04
-Article 3

+ Details

Income Taxes

6 Months Ended

Jul. 31, 2012

Income Taxes [Abstract]

Income Taxes

9.	Income Taxes

Prepaid income taxes of $5,017,000 at July 31, 2012 consisted of approximately $2,775,000 of foreign taxes and $2,242,000 of domestic federal and state taxes. Current income taxes payable of $2,419,000 at January 31, 2012 consisted of approximately $1,641,000 of foreign taxes and $778,000 of domestic federal and state taxes.

The Company and its subsidiaries file consolidated and separate income tax returns in the United States federal jurisdiction and in foreign jurisdictions. The Company is subject to U.S. federal income tax examinations for all tax years beginning with its fiscal year ended January 31, 2009.

The Company is subject to examination by taxing authorities throughout the world, including foreign jurisdictions such as Australia, Canada, Colombia, Hungary, Peru, Russia, Singapore, and the United Kingdom. With few exceptions, the Company and its subsidiaries are no longer subject to foreign income tax examinations for tax years before 2004.

In July 2012, the Company reached a settlement with the Canadian Revenue Agency (“CRA”) and the Internal Revenue Service regarding its request for competent authority assistance for matters arising from an audit of the Company’s Canadian income tax returns for the years ended January 31, 2004, 2005 and 2006. The issues involved related to intercompany repair charges, management fees and the deductibility of depreciation charges and whether those deductions should be taken in Canada or in the United States. Pursuant to the settlement agreement, adjustments have been made to the Company’s Canadian and United States income tax returns for the years ended January 31 2004 through January 31, 2012. These changes resulted in a net reduction to consolidated income tax expense of approximately $150,000, which amount is reflected in the Company’s benefit from income taxes for the three months ended July 31, 2012.

As a result of the settlement, the Company has recognized the benefit of certain tax positions amounting to approximately $3.3 million and has reversed previous estimates of potential penalties and interest amounting to approximately $1.9 million.

The effective tax rate for the six months ended July 31, 2012 was a benefit of approximately 20.4% due to the impact of the settlement discussed above. Without this effect, which amounted to approximately $5.3 million, the effective rate for the six months ended July 31, 2012 was an expense of approximately 22.6%. For the six months ended July 31, 2011 the effective tax rate was approximately 30.4%. These rates are less than the federal statutory rate of 34% primarily due to the effect of lower tax rates in certain foreign jurisdictions. The Company has determined that earnings from these jurisdictions have been permanently reinvested outside of the United States.

- Definition

The entire disclosure for income taxes. Disclosures may include net deferred tax liability or asset recognized in an enterprise's statement of financial position, net change during the year in the total valuation allowance, approximate tax effect of each type of temporary difference and carryforward that gives rise to a significant portion of deferred tax liabilities and deferred tax assets, utilization of a tax carryback, and tax uncertainties information.

+ References

+ Details

Earnings per Share

6 Months Ended

Jul. 31, 2012

Earnings per Share [Abstract]

Earnings per Share

10.

Earnings per Share

Net income per basic common share is computed using the weighted average number of common shares outstanding during the period, excluding unvested restricted stock. Net income per diluted common share is computed using the weighted average number of common shares and dilutive potential common shares outstanding during the period using the treasury stock method. Potential common shares result from the assumed exercise of outstanding common stock options having a dilutive effect and from the assumed vesting of unvested shares of restricted stock.

The following table presents the calculation of basic and diluted weighted average common shares used in the earnings per share calculation:


	Three Months Ended July 31,				For the Six Months Ended July 31,
	2012		2011		2012		2011
	(in thousands)				(in thousands)
Basic weighted average common shares outstanding		12,665		10,970		12,646		10,447

Stock options		583		629		629		578
Unvested restricted stock		14		16		19		18

Total weighted average common share equivalents		597		645		648		596

Diluted weighted average common shares outstanding		13,262		11,615		13,294		11,043

Stock-Based Compensation

6 Months Ended

Jul. 31, 2012

Stock-Based Compensation [Abstract]

Stock-Based Compensation

11.

Stock-Based Compensation

Total compensation expense recognized for stock-based awards granted under the Company’s various equity incentive plans during the three and six months ended July 31, 2012 was approximately $870,000 and $1,064,000, respectively, and, during the three and six months ended July 31, 2011 was approximately $721,000 and $937,000, respectively. Additionally, during the three months ended July 31, 2012, accrued compensation expense applicable to the year ended January 31, 2012 totaling approximately $211,000 was paid by issuing common stock and options to purchase common stock. During the three months ended July 31, 2012, 10,000 shares of common stock and options to purchase 60,000 shares of common stock were granted to non-employee members of the Company’s Board of Directors.

- Definition

The entire disclosure for compensation-related costs for equity-based compensation, which may include disclosure of policies, compensation plan details, allocation of equity compensation, incentive distributions, equity-based arrangements to obtain goods and services, deferred compensation arrangements, employee stock ownership plan details and employee stock purchase plan details.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
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Reference 2: http://www.xbrl.org/2003/role/presentationRef
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Reference 3: http://www.xbrl.org/2003/role/presentationRef
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Reference 6: http://www.xbrl.org/2003/role/presentationRef
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-Name Staff Accounting Bulletin (SAB)
-Number Topic 14

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 123R
-Paragraph 64, 65, A240
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher AICPA
-Name Statement of Position (SOP)
-Number 93-6
-Paragraph 53
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

Segment Reporting

6 Months Ended

Jul. 31, 2012

Segment Reporting [Abstract]

Segment Reporting

12.

Segment Reporting

The Equipment Leasing segment offers new and “experienced” seismic equipment for lease or sale to the oil and gas industry, seismic contractors, environmental agencies, government agencies and universities. The Equipment Leasing segment is headquartered in Huntsville, Texas, with sales and services offices in Calgary, Canada; Brisbane, Australia; Ufa, Bashkortostan, Russia; Budapest, Hungary; Singapore; Bogota, Colombia; and Lima, Peru.

The Seamap segment is engaged in the design, manufacture and sale of state-of-the-art seismic and offshore telemetry systems. Manufacturing, support and sales facilities are maintained in the United Kingdom and Singapore.

Financial information by business segment is set forth below (net of any allocations):


	As of July 31, 2012			As of January 31, 2012
	Total Assets			Total Assets
	(in thousands)
Equipment Leasing	$	174,059		$	172,238
Seamap		19,475			26,322
Eliminations		(252	)		(331	)

Consolidated	$	193,282		$	198,229

Results for the three months ended July 31, 2012 and 2011 were as follows (in thousands):


	Revenues						Operating income (loss)						Income before taxes
	2012			2011			2012			2011			2012			2011
Equipment Leasing	$	15,818		$	14,744		$	(1,313	)	$	632		$	(1,634	)	$	424
Seamap		7,454			6,816			2,617			2,162			2,871			1,939
Eliminations		(192	)		(282	)		37			(195	)		37			(195	)

Consolidated	$	23,080		$	21,278		$	1,341		$	2,599		$	1,274		$	2,168

Results for the six months ended July 31, 2012 and 2011 were as follows (in thousands):


	Revenues						Operating income					Income before taxes
	2012			2011			2012		2011			2012		2011
Equipment Leasing	$	39,905		$	32,897		$	5,714	$	5,981		$	5,092	$	5,710
Seamap		18,295			15,266			7,178		5,723			7,130		5,052
Eliminations		(489	)		(383	)		115		(133	)		115		(133	)

Consolidated	$	57,711		$	47,780		$	13,007	$	11,571		$	12,337	$	10,629

Sales from the Seamap segment to the Equipment Leasing segment are eliminated in the consolidated revenues. Consolidated income before taxes reflects the elimination of profit from intercompany sales and depreciation expense on the difference between the sales price and the cost to manufacture the equipment. Fixed assets are reduced by the difference between the sales price and the cost to manufacture the equipment, less the accumulated depreciation related to the difference.

- Definition

The entire disclosure for reporting segments including data and tables. Reportable segments include those that meet any of the following quantitative thresholds a) it's reported revenue, including sales to external customers and intersegment sales or transfers is 10 percent or more of the combined revenue, internal and external, of all operating segments b) the absolute amount of its reported profit or loss is 10 percent or more of the greater, in absolute amount of 1) the combined reported profit of all operating segments that did not report a loss or 2) the combined reported loss of all operating segments that did report a loss c) its assets are 10 percent or more of the combined assets of all operating segments.

+ References

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-Publisher FASB
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-Publisher FASB
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+ Details

New Accounting Pronouncements (Policies)	6 Months Ended
New Accounting Pronouncements (Policies)	Jul. 31, 2012
New Accounting Pronouncements [Abstract]
Fair Value Measurement	In May 2011, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) No. 2011-04, Fair Value Measurement-Topic 820: Amendments to Achieve Common Fair Value Measurement and Disclosure Requirements in U.S. GAAP and International Financial Reporting Standards, to provide a consistent definition of fair value and ensure that the fair value measurement and disclosure requirements are similar between U.S. GAAP and International Financial Reporting Standards. ASU 2011-04 changes certain fair value measurement principles and enhances disclosure requirements, particularly for Level 3 fair value measurements. ASU 2011-04 was effective in the six months ended July 31, 2012 and applied prospectively. The adoption did not have a material effect on the Company’s financial statements.
Comprehensive Income	In June 2011, the FASB issued ASU No. 2011-05, Comprehensive Income-Topic 220: Presentation of Comprehensive Income, to require an entity to present the total of comprehensive income, the components of net income, and the components of other comprehensive income either in a single continuous statement of comprehensive income or in two separate but consecutive statements. ASU 2011-05 eliminates the option to present the components of other comprehensive income as part of the statement of equity. This update does not change what items are reported in other comprehensive income or the requirement to report reclassification of items from other comprehensive income to net income. ASU 2011-05 was effective in the six months ended July 31, 2012, though earlier adoption was permitted. The update was applied retrospectively upon adoption. The Company elected to present two separate but consecutive statements. The adoption of this standard did not have a material effect on the Company’s financial statements.

Balance Sheet (Tables)

6 Months Ended

Jul. 31, 2012

Balance Sheet [Abstract]

Accounts receivable and contracts receivable


	July 31, 2012			January 31, 2012
	(in thousands)
Accounts receivable:
Accounts receivable	$	27,947		$	40,179
Allowance for doubtful accounts		(3,931	)		(4,391	)

Total accounts receivable, net	$	24,016		$	35,788

Contracts receivable:
Contracts receivable	$	2,584		$	2,273
Less current portion of contracts receivable		(2,584	)		(2,273	)

Long-term portion of contracts receivable, net	$	—		$	—

Inventories


	July 31, 2012			January 31, 2012
	(in thousands)
Inventories:
Raw materials	$	3,025		$	2,789
Finished goods		3,749			3,711
Work in progress		1,224			1,109

		7,998			7,609
Less allowance for obsolescence		(1,021	)		(901	)

Total inventories, net	$	6,977		$	6,708

Seismic equipment lease pool and property and equipment


	July 31, 2012			January 31, 2012
	(in thousands)
Seismic equipment lease pool and property and equipment:
Seismic equipment lease pool	$	229,901		$	223,493
Land and buildings		366			366
Furniture and fixtures		8,547			8,020
Autos and trucks		680			680

		239,494			232,559
Accumulated depreciation and amortization		(120,995	)		(112,182	)

Total seismic equipment lease pool and property and equipment, net	$	118,499		$	120,377

Goodwill and Other Intangible Assets (Tables)

6 Months Ended

Jul. 31, 2012

Goodwill and Other Intangible Assets [Abstract]

Goodwill and Other Intangible Assets


	Weighted Average Remaining Life at 7/31/12		July 31, 2012							January 31, 2012
	Weighted Average Remaining Life at 7/31/12		Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount
			(in thousands)							(in thousands)
Goodwill			$	4,320						$	4,320

Proprietary rights		7.9	$	3,491	$	(1,473	)	$	2,018	$	3,532	$	(1,347	)	$	2,185
Customer relationships		5.6		2,397		(724	)		1,673		2,387		(572	)		1,815
Patents		5.6		722		(218	)		504		719		(172	)		547
Trade name		5.6		197		(60	)		137		196		(47	)		149

Amortizable intangible assets			$	6,807	$	(2,475	)	$	4,332	$	6,834	$	(2,138	)	$	4,696

Amortization expense related to amortizable intangible assets


For fiscal years ending January 31 (in thousands):
2013	$	338
2014		669
2015		669
2016		669
2017		669
2018 and thereafter		1,318

Total	$	4,332

Long- Term Debt and Notes Payable (Tables)

6 Months Ended

Jul. 31, 2012

Long-Term Debt and Notes Payable [Abstract]

Long-term debt and notes payable


	July 31, 2012			January 31, 2012
Revolving line of credit	$	12,400		$	12,550
Equipment note		—			638
MCL notes		31			785
SAP equipment notes		274			210

		12,705			14,183
Less current portion		(175	)		(1,399	)

Long-term debt	$	12,530		$	12,784

Earnings per Share (Tables)

6 Months Ended

Jul. 31, 2012

Earnings per Share [Abstract]

Basic and diluted weighted average common shares used in the earnings per share calculation


	Three Months Ended July 31,				For the Six Months Ended July 31,
	2012		2011		2012		2011
	(in thousands)				(in thousands)
Basic weighted average common shares outstanding		12,665		10,970		12,646		10,447

Stock options		583		629		629		578
Unvested restricted stock		14		16		19		18

Total weighted average common share equivalents		597		645		648		596

Diluted weighted average common shares outstanding		13,262		11,615		13,294		11,043

Segment Reporting (Tables)

6 Months Ended

Jul. 31, 2012

Assets [Member]

Segment Reporting Information [Line Items]

Financial information by business segment


	As of July 31, 2012			As of January 31, 2012
	Total Assets			Total Assets
	(in thousands)
Equipment Leasing	$	174,059		$	172,238
Seamap		19,475			26,322
Eliminations		(252	)		(331	)

Consolidated	$	193,282		$	198,229

Revenue [Member]

Segment Reporting Information [Line Items]

Financial information by business segment


	Revenues						Operating income (loss)						Income before taxes
	2012			2011			2012			2011			2012			2011
Equipment Leasing	$	15,818		$	14,744		$	(1,313	)	$	632		$	(1,634	)	$	424
Seamap		7,454			6,816			2,617			2,162			2,871			1,939
Eliminations		(192	)		(282	)		37			(195	)		37			(195	)

Consolidated	$	23,080		$	21,278		$	1,341		$	2,599		$	1,274		$	2,168

Results for the six months ended July 31, 2012 and 2011 were as follows (in thousands):


	Revenues						Operating income					Income before taxes
	2012			2011			2012		2011			2012		2011
Equipment Leasing	$	39,905		$	32,897		$	5,714	$	5,981		$	5,092	$	5,710
Seamap		18,295			15,266			7,178		5,723			7,130		5,052
Eliminations		(489	)		(383	)		115		(133	)		115		(133	)

Consolidated	$	57,711		$	47,780		$	13,007	$	11,571		$	12,337	$	10,629

- Definition

Tabular disclosure of the profit or loss and total assets for each reportable segment. An entity discloses certain information on each reportable segment if the amounts (a) are included in the measure of segment profit or loss reviewed by the chief operating decision maker or (b) are otherwise regularly provided to the chief operating decision maker, even if not included in that measure of segment profit or loss.

+ References + Details

Restricted Cash (Details)	Jul. 31, 2012 USD ($)
Restricted Cash (Textual) [Abstract]
Short-term time deposits	$ 97,000

Balance Sheet (Details) - USD ($) $ in Thousands	Jul. 31, 2012	Jan. 31, 2012
Accounts receivable:
Accounts receivable	$ 27,947	$ 40,179
Allowance for doubtful accounts	(3,931)	(4,391)
Total accounts receivable, net	24,016	35,788
Contracts receivable:
Contracts receivable	2,584	2,273
Less current portion of contracts receivable	(2,584)	(2,273)
Long-term portion of contracts receivable, net

Balance Sheet (Details 1) - USD ($) $ in Thousands	Jul. 31, 2012	Jan. 31, 2012
Inventories:
Raw materials	$ 3,025	$ 2,789
Finished goods	3,749	3,711
Work in progress	1,224	1,109
Total inventories, gross	7,998	7,609
Less allowance for obsolescence	(1,021)	(901)
Total inventories, net	$ 6,977	$ 6,708

- Definition

The amount of the valuation account as of the balance sheet date which reduces the carrying amount of inventory to net realizable value; takes into consideration such factors as market value, excessive quantities based on expected sales, technological obsolescence, and shrinkage. May also provide for estimated product returns or price concessions pertaining to product cost.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 330
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SAB TOPIC 5.BB)
-URI http://asc.fasb.org/extlink&oid=6386940&loc=d3e100047-122729

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.6(a))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 4
-Subparagraph (SX 210.12-09)
-URI http://asc.fasb.org/extlink&oid=6881521&loc=d3e24092-122690

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 330
-SubTopic 10
-Section 35
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6386567&loc=d3e3927-108312

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher AICPA
-Name Accounting Research Bulletin (ARB)
-Number 43
-Paragraph 14
-Chapter 4
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher AICPA
-Name Accounting Research Bulletin (ARB)
-Number 43
-Paragraph 8, 9, 14
-Chapter 4
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher AICPA
-Name Accounting Research Bulletin (ARB)
-Number 43
-Section A
-Paragraph 9
-Chapter 3
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 09
-Article 12

Reference 9: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 6
-Subparagraph a
-Article 5

+ Details

Balance Sheet (Details 2) - USD ($) $ in Thousands	Jul. 31, 2012	Jan. 31, 2012
Seismic equipment lease pool and property and equipment:
Seismic equipment lease pool and property and equipment, gross	$ 239,494	$ 232,559
Accumulated depreciation and amortization	(120,995)	(112,182)
Total seismic equipment lease pool and property and equipment, net	118,499	120,377
Seismic equipment lease pool [Member]
Seismic equipment lease pool and property and equipment:
Seismic equipment lease pool and property and equipment, gross	229,901	223,493
Land and buildings [Member]
Seismic equipment lease pool and property and equipment:
Seismic equipment lease pool and property and equipment, gross	366	366
Furniture and fixtures [Member]
Seismic equipment lease pool and property and equipment:
Seismic equipment lease pool and property and equipment, gross	8,547	8,020
Autos and Trucks [Member]
Seismic equipment lease pool and property and equipment:
Seismic equipment lease pool and property and equipment, gross	$ 680	$ 680

- Definition

The cumulative amount of depreciation, depletion and amortization (related to property, plant and equipment, but not including land) that has been recognized in the income statement.

+ References + Details

Balance Sheet (Details Textual) - USD ($)	Jul. 31, 2012	Jan. 31, 2012
Balance Sheet [Line Items]
Contracts receivable	$ 2,584,000	$ 2,273,000
Total accounts receivable, net	$ 24,016,000	$ 35,788,000
Balance Sheet (Textual) [Abstract]
Contracts receivable bearing interest rate	9.00%
Subsequent Event [Member]
Balance Sheet [Line Items]
Contracts receivable	$ 1,700,000
Total accounts receivable, net	$ 700,000
Maximum [Member]
Balance Sheet [Line Items]
Contracts receivable repayment term	23 months
Minimum [Member]
Balance Sheet [Line Items]
Contracts receivable repayment term	10 months

Goodwill and Other Intangible Assets (Details) - USD ($) $ in Thousands	6 Months Ended
	Jul. 31, 2012	Jan. 31, 2012
Goodwill and Other Intangible Assets
Gross Carrying Amount	$ 6,807	$ 6,834
Accumulated Amortization	(2,475)	(2,138)
Amortizable intangible assets	4,332	4,696
Goodwill	$ 4,320	4,320
Proprietary rights [Member]
Goodwill and Other Intangible Assets
Useful life of intangible assets	7 years 10 months 24 days
Gross Carrying Amount	$ 3,491	3,532
Accumulated Amortization	(1,473)	(1,347)
Amortizable intangible assets	$ 2,018	2,185
Customer Relationships [Member]
Goodwill and Other Intangible Assets
Useful life of intangible assets	5 years 7 months 6 days
Gross Carrying Amount	$ 2,397	2,387
Accumulated Amortization	(724)	(572)
Amortizable intangible assets	$ 1,673	1,815
Patents [Member]
Goodwill and Other Intangible Assets
Useful life of intangible assets	5 years 7 months 6 days
Gross Carrying Amount	$ 722	719
Accumulated Amortization	(218)	(172)
Amortizable intangible assets	$ 504	547
Trade Names [Member]
Goodwill and Other Intangible Assets
Useful life of intangible assets	5 years 7 months 6 days
Gross Carrying Amount	$ 197	196
Accumulated Amortization	(60)	(47)
Amortizable intangible assets	$ 137	$ 149

Goodwill and Other Intangible Assets (Details 1) - USD ($) $ in Thousands	Jul. 31, 2012	Jan. 31, 2012
Amortization expense related to amortizable intangible assets
2013	$ 338
2014	669
2015	669
2016	669
2017	669
2018 and thereafter	1,318
Total	$ 4,332	$ 4,696

Goodwill and Other Intangible Assets (Details Textual) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 31, 2012	Jul. 31, 2011	Jul. 31, 2012	Jul. 31, 2011	Jan. 31, 2012
Goodwill And Other Intangible Assets (Textual) [Abstract]
Goodwill	$ 4,320		$ 4,320		$ 4,320
Good will impairment			0
Aggregate amortization expense	$ 169,000	$ 167,000	$ 338,000	$ 339,000
Maximum [Member]
Goodwill And Other Intangible Assets [Line Items]
Useful life of intangible assets			15 years
Minimum [Member]
Goodwill And Other Intangible Assets [Line Items]
Useful life of intangible assets			8 years

- Definition

Carrying amount as of the balance sheet date, which is the cumulative amount paid and (if applicable) the fair value of any noncontrolling interest in the acquiree, adjusted for any amortization recognized prior to the adoption of any changes in generally accepted accounting principles (as applicable) and for any impairment charges, in excess of the fair value of net assets acquired in one or more business combination transactions.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=14024403&loc=d3e13816-109267

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13770-109266

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 142
-Paragraph 45
-Subparagraph e
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 142
-Paragraph 43
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 141R
-Paragraph 72
-Subparagraph d
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 142
-Paragraph 45
-Subparagraph e
-Clause 1
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 141R
-Paragraph 68
-Subparagraph l
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 141R
-Paragraph 34
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

- Definition

Loss recognized during the period that results from the write-down of goodwill after comparing the implied fair value of reporting unit goodwill with the carrying amount of that goodwill. Goodwill is assessed at least annually for impairment.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 50
-Paragraph 2
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=14024403&loc=d3e13854-109267

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13777-109266

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=6943989&loc=d3e3602-108585

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (e)
-URI http://asc.fasb.org/extlink&oid=14024403&loc=d3e13816-109267

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 141R
-Paragraph 72
-Subparagraph d
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 142
-Paragraph 43
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 142
-Paragraph 20
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 142
-Paragraph 45
-Subparagraph e
-Clause 5
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 9: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 142
-Paragraph 47
-Subparagraph b
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

Long-Term Debt and Notes Payable (Details) - USD ($) $ in Thousands	Jul. 31, 2012	Jan. 31, 2012
Long-Term debt and notes payable
Long-term debt gross	$ 12,705	$ 14,183
Less current portion	(175)	(1,399)
Long-term debt	12,530	12,784
Revolving Credit Facility [Member]
Long-Term debt and notes payable
Long-term debt gross	12,400	12,550
Equipment note [Member]
Long-Term debt and notes payable
Long-term debt gross		638
MCL notes [Member]
Long-Term debt and notes payable
Long-term debt gross	31	785
SAP equipment notes [Member]
Long-Term debt and notes payable
Long-term debt gross	$ 274	$ 210

Long-Term Debt and Notes Payable (Details Textual)	1 Months Ended				6 Months Ended
Long-Term Debt and Notes Payable (Details Textual)	Mar. 31, 2012 Installment	Mar. 31, 2011 Installment	Mar. 31, 2010 Note	Jan. 31, 2010 Note	Jul. 31, 2012 USD ($)	Jul. 31, 2011 USD ($)	Oct. 31, 2010 USD ($)
Line of Credit Facility [Line Items]
Annual interest rate of promissory note	8.00%
Promissory note repayable installments \| Installment	18
Long-Term Debt and Notes Payable (Textual) [Abstract]
Collateral securities					The revolving credit facility and any term loan are collateralized by essentially all of the Company’s domestic assets
Secured promissory note							$ 3,600,000
Maximum [Member]
Line of Credit Facility [Line Items]
Debt to shareholders equity ratio					1
Current assets to current liabilities ratio					1
Revolving Credit Facility [Member]
Line of Credit Facility [Line Items]
Interest description					Interest is payable monthly at the prime rate plus 50 basis points, which was 3.75% at July 31, 2012.
Interest rate					3.75%
Revolving Credit Facility [Member] \| Maximum [Member]
Line of Credit Facility [Line Items]
Available borrowings under the revolving credit facility to secure letters of credit					$ 7,000,000
Notes due in 2013 [Member]
Line of Credit Facility [Line Items]
Annual interest rate of promissory note					8.35%
Notes due in 2014 [Member]
Line of Credit Facility [Line Items]
Annual interest rate of promissory note					7.40%
First Victoria Bank [Member] \| Revolving Credit Facility [Member]
Line of Credit Facility [Line Items]
Maximum borrowing amount on a revolving basis						$ 35,000,000
Amortization period					48 months
Average borrowings under the revolving credit facility					$ 15,756,000	$ 17,628,000
First Victoria Bank [Member] \| Revolving Credit Facility [Member] \| Maximum [Member]
Line of Credit Facility [Line Items]
Debt to shareholders equity ratio					0.7
Limit of indebtedness					$ 1,000,000
First Victoria Bank [Member] \| Revolving Credit Facility [Member] \| Minimum [Member]
Line of Credit Facility [Line Items]
Current assets to current liabilities ratio					1.25
Quarterly earnings before interest, taxes, depreciation and amortization					$ 2,000,000
First Victoria Bank [Member] \| Amendment to revolving credit facility [Member]
Line of Credit Facility [Line Items]
Maximum borrowing amount on a revolving basis					$ 50,000,000
Maturity date of revolving credit facility					Aug. 31, 2015
Interest description					Interest at the prime rate, with a floor of 3.25%
Interest rate					3.25%
First Victoria Bank [Member] \| Amendment to revolving credit facility [Member] \| Maximum [Member]
Line of Credit Facility [Line Items]
Available borrowings under the revolving credit facility to secure letters of credit					$ 10,000,000
Limit of indebtedness					10,000,000
Guaranty of subsidiary debt					$ 5,000,000
Mitcham Canada ULC [Member]
Line of Credit Facility [Line Items]
Number of promissory notes related to purchase \| Note			2
Annual interest rate of promissory note		6.00%
Promissory note repayable installments \| Installment		2
Seismic Asia Pacific Pty Ltd [Member]
Line of Credit Facility [Line Items]
Number of promissory notes related to purchase \| Note				2

Public Offering of Common Stock (Details) - USD ($) $ / shares in Units, $ in Thousands	1 Months Ended	6 Months Ended
	Jun. 30, 2011	Jul. 31, 2012	Jul. 31, 2011	Jan. 31, 2012
Public Offering of Common Stock (Textual) [Abstract]
Common stock offered		13,656		13,556
Par value of common stock		$ 0.01		$ 0.01
Net proceeds to company			$ 30,994
Public Offering [Member]
Public Offering of Common Stock (Textual) [Abstract]
Common stock offered	2,300,000
Par value of common stock	$ 0.01
Net proceeds to company	$ 31,000

Income Taxes (Details) - USD ($)	6 Months Ended
Income Taxes (Details) - USD ($)	Jul. 31, 2012	Jul. 31, 2011	Jan. 31, 2012
Income Taxes (Textual) [Abstract]
Current income taxes payable			$ 2,419,000
Current domestic federal and state taxes			778,000
Prepaid foreign taxes	2,775,000
Current foreign taxes			$ 1,641,000
Prepaid domestic federal and state taxes.	2,242,000
Prepaid income taxes	5,017,000
Net reduction in consolidated income tax expenses	150,000
Recognized tax benefit	3,300,000
Reversed estimates of potential penalties and interest	$ 1,900,000
Effective tax rate having impact	20.40%
Tax amount without the effect	$ 5,300,000
Effective tax rate without impact	22.60%	30.40%
Federal statutory rate	34.00%

Earnings per Share (Details) - shares shares in Thousands	3 Months Ended		6 Months Ended
Earnings per Share (Details) - shares shares in Thousands	Jul. 31, 2012	Jul. 31, 2011	Jul. 31, 2012	Jul. 31, 2011
Basic and diluted weighted average common shares used in the earnings per share calculation
Basic weighted average common shares outstanding	12,665	10,970	12,646	10,447
Stock options	583	629	629	578
Unvested restricted stock	14	16	19	18
Total weighted average common share equivalents	597	645	648	596
Diluted weighted average common shares outstanding	13,262	11,615	13,294	11,043

- Definition

The average number of shares or units issued and outstanding that are used in calculating diluted EPS or earnings per unit (EPU), determined based on the timing of issuance of shares or units in the period.

+ References + Details

- Definition

Number of [basic] shares or units, after adjustment for contingently issuable shares or units and other shares or units not deemed outstanding, determined by relating the portion of time within a reporting period that common shares or units have been outstanding to the total time in that period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 45
-Paragraph 10
-URI http://asc.fasb.org/extlink&oid=7655603&loc=d3e1448-109256

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Weighted-Average Number of Common Shares Outstanding
-URI http://asc.fasb.org/extlink&oid=6528421

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Emerging Issues Task Force (EITF)
-Number 07-4
-Paragraph 4
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 128
-Paragraph 8
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 128
-Paragraph 171
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 128
-Paragraph 40
-Subparagraph a
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

Stock-Based Compensation (Details) - USD ($)	3 Months Ended		6 Months Ended
Stock-Based Compensation (Details) - USD ($)	Jul. 31, 2012	Jul. 31, 2011	Jul. 31, 2012	Jul. 31, 2011
Stock-Based Compensation (Textual) [Abstract]
Compensation expense recognized for stock-based awards granted	$ 870,000	$ 721,000,000	$ 1,064,000	$ 937,000
Accrued compensation expense	$ 211,000
Common stock shares granted	10,000
Options to purchase common stock granted to non-employee	60,000

Segment Reporting (Details) - USD ($) $ in Thousands	Jul. 31, 2012	Jan. 31, 2012
Segment Reporting Information [Line Items]
Consolidated	$ 193,282	$ 198,229
Equipment Leasing [Member]
Segment Reporting Information [Line Items]
Consolidated	174,059	172,238
Seamap [Member]
Segment Reporting Information [Line Items]
Consolidated	19,475	26,322
Eliminations [Member]
Segment Reporting Information [Line Items]
Consolidated	$ (252)	$ (331)

Segment Reporting (Details 1) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
Segment Reporting (Details 1) - USD ($) $ in Thousands	Jul. 31, 2012	Jul. 31, 2011	Jul. 31, 2012	Jul. 31, 2011
Segment Reporting Information [Line Items]
Revenues	$ 23,080	$ 21,278	$ 57,711	$ 47,780
Operating income (loss)	1,341	2,599	13,007	11,571
Income before taxes	1,274	2,168	12,337	10,629
Equipment Leasing [Member]
Segment Reporting Information [Line Items]
Revenues	15,818	14,744	39,905	32,897
Operating income (loss)	(1,313)	632	5,714	5,981
Income before taxes	(1,634)	424	5,092	5,710
Seamap [Member]
Segment Reporting Information [Line Items]
Revenues	7,454	6,816	18,295	15,266
Operating income (loss)	2,617	2,162	7,178	5,723
Income before taxes	2,871	1,939	7,130	5,052
Eliminations [Member]
Segment Reporting Information [Line Items]
Revenues	(192)	(282)	(489)	(383)
Operating income (loss)	37	(195)	115	(133)
Income before taxes	$ 37	$ (195)	$ 115	$ (133)