Condensed Consolidated Balance Sheets (Unaudited) (USD $) In Thousands, unless otherwise specified	Jul. 31, 2013	Jan. 31, 2013
Current assets:
Cash and cash equivalents	$ 20,298	$ 15,150
Restricted cash	719	801
Accounts receivable, net	23,651	23,131
Current portion of contracts and notes receivable	1,075	2,096
Inventories, net	6,536	6,188
Prepaid income taxes	7,023	5,591
Deferred tax asset	1,751	1,842
Prepaid expenses and other current assets	4,039	3,079
Total current assets	65,092	57,878
Seismic equipment lease pool and property and equipment, net	105,874	119,608
Intangible assets, net	3,587	3,989
Goodwill	4,320	4,320
Deferred tax asset	4,816	4,296
Other assets	32	316
Total assets	183,721	190,407
Current liabilities:
Accounts payable	4,436	6,921
Current maturities - long-term debt	130	145
Deferred revenue	653	539
Accrued expenses and other current liabilities	2,930	1,875
Total current liabilities	8,149	9,480
Non-current income taxes payable	376	376
Long-term debt, net of current maturities	139	4,238
Total liabilities	8,664	14,094
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; 13,867 and 13,763 shares issued at July 31, 2013 and January 31, 2013, respectively	139	138
Additional paid-in capital	117,368	116,506
Treasury stock, at cost (1,030 and 926 shares at July 31, 2013 and January 31, 2013, respectively)	(6,402)	(4,860)
Retained earnings	61,962	56,348
Accumulated other comprehensive income	1,990	8,181
Total shareholders' equity	175,057	176,313
Total liabilities and shareholders' equity	$ 183,721	$ 190,407