Consolidated Statements of Income (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Jan. 31, 2013	Jan. 31, 2012	Jan. 31, 2011
Revenues:
Equipment leasing	$ 54,592	$ 70,137	$ 36,825
Lease pool equipment sales	11,412	6,503	2,470
Seamap equipment sales	31,169	28,406	21,345
Other equipment sales	7,512	7,788	10,723
Total revenues	104,685	112,834	71,363
Cost of sales:
Direct costs - equipment leasing	7,963	8,059	3,739
Direct costs - lease pool depreciation	33,405	27,400	21,354
Cost of lease pool equipment sales	6,043	1,580	1,130
Cost of Seamap and other equipment sales	19,861	18,043	18,498
Total cost of sales	67,272	55,082	44,721
Gross profit	37,413	57,752	26,642
Operating expenses:
General and administrative	22,539	21,354	16,755
(Recovery of) provision for doubtful accounts	(428)	615	1,795
Depreciation and amortization	1,400	1,239	1,171
Total operating expenses	23,511	23,208	19,721
Operating income	13,902	34,544	6,921
Other income (expense):
Gain from bargain purchase in business combination			1,304
Interest income	544	344	283
Interest expense	(533)	(740)	(756)
Other, net	(389)	182	(958)
Total other expense	(378)	(214)	(127)
Income before income taxes	13,524	34,330	6,794
Benefit (provision) for income taxes	3,527	(10,009)	(2,065)
Net income	$ 17,051	$ 24,321	$ 4,729
Net income per common share:
Basic	$ 1.34	$ 2.13	$ 0.48
Diluted	$ 1.29	$ 2.02	$ 0.46
Shares used in computing income per common share:
Basic	12,715	11,432	9,870
Diluted	13,242	12,069	10,181