Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Apr. 30, 2016	Apr. 30, 2015
Cash flows from operating activities:
Net loss	$ (6,443)	$ (237)
Adjustments to reconcile net loss to net cash provided by operating activities:
Depreciation and amortization	7,558	8,307
Stock-based compensation	247	281
Provision for inventory obsolescence	43	45
Gross profit from sale of lease pool equipment	(491)	(129)
Excess tax benefit from exercise of non-qualified stock options and restricted shares		(12)
Deferred tax benefit	(497)	(347)
Changes in working capital items:
Trade accounts and contracts receivable	2,809	(2,839)
Inventories	297	(850)
Prepaid expenses and other current assets	(250)	3,277
Income taxes payable	640	(533)
Accounts payable, accrued expenses, other current liabilities and deferred revenue	(2,044)	253
Foreign exchange gains net of losses	(119)	(778)
Net cash provided by operating activities	1,750	6,438
Cash flows from investing activities:
Purchases of seismic equipment held for lease	(522)	(73)
Purchases of property and equipment	(82)	(88)
Sale of used lease pool equipment	906	227
Net cash provided by investing activities	302	66
Cash flows from financing activities:
Net payments on revolving line of credit	(1,950)	(5,000)
Payments on term loan and other borrowings	(804)	(952)
Net proceeds from short-term investments		184
Excess tax benefit from exercise of non-qualified stock options and restricted shares		12
Net cash used in financing activities	(2,754)	(5,756)
Effect of changes in foreign exchange rates on cash and cash equivalents	(707)	304
Net change in cash and cash equivalents	(1,409)	1,052
Cash and cash equivalents, beginning of period	3,769	5,175
Cash and cash equivalents, end of period	2,360	6,227
Supplemental cash flow information:
Interest paid	338	228
Income taxes paid	151	796
Purchases of seismic equipment held for lease in accounts payable at end of period	$ 161	$ 1,331