Condensed Consolidated Statements of Income (Unaudited) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Oct. 31, 2011	Oct. 31, 2010	Oct. 31, 2011	Oct. 31, 2010
Revenues:
Equipment leasing	$ 17,411	$ 8,074	$ 46,458	$ 24,133
Lease pool equipment sales	2,442	976	3,103	1,498
Seamap equipment sales	6,198	4,249	21,081	17,230
Other equipment sales	1,969	6,674	5,158	8,767
Total revenues	28,020	19,973	75,800	51,628
Cost of sales:
Direct costs--equipment leasing	2,365	895	6,348	2,485
Direct costs--lease pool depreciation	7,223	5,289	20,016	15,556
Cost of lease pool equipment sales	519	385	723	634
Cost of Seamap and other equipment sales	3,568	7,425	12,230	15,376
Total cost of sales	13,675	13,994	39,317	34,051
Gross profit	14,345	5,979	36,483	17,577
Operating expenses:
General and administrative	4,961	3,937	15,403	12,286
Provision for doubtful accounts	679		187	797
Depreciation and amortization	304	296	921	871
Total operating expenses	5,944	4,233	16,511	13,954
Operating income	8,401	1,746	19,972	3,623
Other income (expenses):
Gain from bargain purchase in business combination				1,304
Interest, net	(25)	(90)	(295)	(302)
Other, net	680	(553)	8	(618)
Total other income (expenses)	655	(643)	(287)	384
Income before income taxes	9,056	1,103	19,685	4,007
Provision for income taxes	(2,293)	(376)	(5,529)	(1,032)
Net income	$ 6,763	$ 727	$ 14,156	$ 2,975
Net income per common share:
Basic	$ 0.55	$ 0.07	$ 1.28	$ 0.30
Diluted	$ 0.52	$ 0.07	$ 1.21	$ 0.29
Shares used in computing net income per common share:
Basic	12,381	9,916	11,091	9,854
Diluted	12,982	10,203	11,689	10,122