CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Jan. 31, 2014	Jan. 31, 2013
Current assets:
Cash and cash equivalents	$ 15,162	$ 15,150
Restricted cash	81	801
Accounts receivable, net of allowance for doubtful accounts of $3,833 and $3,374 at January 31, 2014 and 2013, respectively	29,514	23,131
Contracts and notes receivable	1,005	2,096
Inventories, net	8,338	6,188
Prepaid income taxes	2,177	5,591
Deferred tax asset	1,968	1,842
Prepaid expenses and other current assets	3,915	3,079
Total current assets	62,160	57,878
Seismic equipment lease pool and property and equipment, net	129,573	119,608
Intangible assets, net	3,201	3,989
Goodwill	4,320	4,320
Deferred tax asset	6,133	4,296
Other assets	32	316
Total assets	205,419	190,407
Current liabilities:
Accounts payable	10,745	6,921
Current maturities-long-term debt	75	145
Deferred revenue	35	539
Accrued expenses and other current liabilities	1,583	1,875
Total current liabilities	12,438	9,480
Non-current income taxes payable	408	376
Long-term debt, net of current maturities	22,125	4,238
Total liabilities	34,971	14,094
Commitments and contingencies (Note 12, 16 and 17)
Shareholders' equity:
Preferred stock, $1.00 par value; 1,000 shares authorized; none issued and outstanding
Common stock $.01 par value; 20,000 shares authorized;13,907 and 13,763 shares issued at January 31, 2014 and January 31, 2013, respectively	139	138
Additional paid-in capital	118,156	116,506
Treasury stock, at cost (1,075 and 926 shares at January 31, 2014 and 2013, respectively)	(7,075)	(4,860)
Retained earnings	61,116	56,348
Accumulated other comprehensive (loss) income	(1,888)	8,181
Total shareholders' equity	170,448	176,313
Total liabilities and shareholders' equity	$ 205,419	$ 190,407