Condensed Consolidated Balance Sheets (Unaudited) (USD $) In Thousands, unless otherwise specified	Apr. 30, 2012	Jan. 31, 2012
Current assets:
Cash and cash equivalents	$ 17,432	$ 15,287
Restricted cash	98	98
Accounts receivable, net	32,003	35,788
Current portion of contracts receivable	2,475	2,273
Inventories, net	6,540	6,708
Deferred tax asset	2,536	2,594
Prepaid expenses and other current assets	3,193	2,530
Total current assets	64,277	65,278
Seismic equipment lease pool and property and equipment, net	127,059	120,377
Intangible assets, net	4,621	4,696
Goodwill	4,320	4,320
Prepaid foreign income tax	3,755	3,519
Deferred tax asset	724	0
Other assets	468	39
Total assets	205,224	198,229
Current liabilities:
Accounts payable	6,049	13,037
Current maturities - long-term debt	179	1,399
Income taxes payable	2,536	2,419
Deferred revenue	522	543
Accrued expenses and other current liabilities	4,848	6,583
Total current liabilities	14,134	23,981
Non-current income taxes payable	5,435	5,435
Deferred tax liability	0	595
Long-term debt, net of current maturities	19,359	12,784
Total liabilities	38,928	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; 13,606 and 13,556 shares issued at April 30, 2012 and January 31, 2012, respectively	136	136
Additional paid-in capital	114,294	113,654
Treasury stock, at cost (925 shares at April 30, 2012 and January 31, 2012)	(4,857)	(4,857)
Retained earnings	47,753	39,297
Accumulated other comprehensive income	8,970	7,204
Total shareholders' equity	166,296	155,434
Total liabilities and shareholders' equity	$ 205,224	$ 198,229