Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Apr. 30, 2017	Apr. 30, 2016
Cash flows from operating activities:
Net loss	$ (2,665)	$ (6,443)
Adjustments to reconcile net loss to net cash provided by operating activities:
Depreciation and amortization	4,791	7,558
Stock-based compensation	224	247
Provision for inventory obsolescence	8	43
Gross profit from sale of lease pool equipment	(2,689)	(491)
Deferred tax benefit	(27)	(497)
Changes in working capital items:
Trade accounts and contracts receivable	2,175	2,809
Inventories	(1,403)	297
Prepaid expenses and other current assets	549	(250)
Income taxes receivable and payable	149	640
Accounts payable, accrued expenses, other current liabilities and deferred revenue	48	(2,044)
Foreign exchange gains net of losses	(48)	(119)
Net cash provided by operating activities	1,112	1,750
Cash flows from investing activities:
Purchases of seismic equipment held for lease	(158)	(522)
Purchases of property and equipment	(28)	(82)
Sale of used lease pool equipment	4,496	906
Net cash provided by investing activities	4,310	302
Cash flows from financing activities:
Net payments on revolving line of credit	(3,500)	(1,950)
Payments on term loan and other borrowings	(2,807)	(804)
Net proceeds from preferred stock offering	27
Preferred stock dividends	(194)
Net cash used in financing activities	(6,474)	(2,754)
Effect of changes in foreign exchange rates on cash and cash equivalents	(3)	(707)
Net change in cash and cash equivalents	(1,055)	(1,409)
Cash and cash equivalents, beginning of period	3,511	3,769
Cash and cash equivalents, end of period	2,456	2,360
Supplemental cash flow information:
Interest paid	92	338
Income taxes paid	13	151
Purchases of seismic equipment held for lease in accounts payable at end of period	$ 119	$ 161