Condensed Consolidated Balance Sheets (Unaudited) (USD $) In Thousands, unless otherwise specified	Oct. 31, 2012	Jan. 31, 2012
Current assets:
Cash and cash equivalents	$ 23,990	$ 15,287
Restricted cash	96	98
Accounts receivable, net	18,627	35,788
Current portion of contracts and notes receivable	2,661	2,273
Inventories, net	7,524	6,708
Deferred tax asset	1,771	2,594
Prepaid income taxes	5,294
Prepaid expenses and other current assets	4,072	2,530
Total current assets	64,035	65,278
Seismic equipment lease pool and property and equipment, net	117,388	120,377
Intangible assets, net	4,185	4,696
Goodwill	4,320	4,320
Prepaid foreign income tax		3,519
Deferred tax asset	3,381
Other assets	412	39
Total assets	193,721	198,229
Current liabilities:
Accounts payable	3,976	13,037
Current maturities- long-term debt	142	1,399
Income taxes payable		2,419
Deferred revenue	925	543
Accrued expenses and other current liabilities	2,743	6,583
Total current liabilities	7,786	23,981
Non-current income taxes payable	417	5,435
Deferred tax liability		595
Long-term debt, net of current maturities	13,474	12,784
Total liabilities	21,677	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; 13,763 and 13,556 shares issued at October 31, 2012 and January 31, 2012, respectively	138	136
Additional paid-in capital	116,264	113,654
Treasury stock, at cost (925 shares at October 31, 2012 and January 31, 2012)	(4,857)	(4,857)
Retained earnings	52,932	39,297
Accumulated other comprehensive income	7,567	7,204
Total shareholders' equity	172,044	155,434
Total liabilities and shareholders' equity	$ 193,721	$ 198,229