Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jul. 31, 2017	Jul. 31, 2016
Cash flows from operating activities:
Net loss	$ (8,029)	$ (15,969)
Adjustments to reconcile net loss to net cash provided by operating activities:
Depreciation and amortization	9,095	14,910
Stock-based compensation	461	433
Provision for inventory obsolescence	67	43
Gross profit from sale of lease pool equipment	(2,852)	(1,456)
Deferred tax benefit	(57)	(375)
Changes in working capital items:
Trade accounts and contracts receivable	5,877	8,769
Inventories	(107)	181
Prepaid expenses and other current assets	201	(673)
Income taxes payable	430	658
Accounts payable, accrued expenses, other current liabilities and deferred revenue	(929)	(4,014)
Foreign exchange gains net of losses	(71)	577
Net cash provided by operating activities	4,086	3,084
Cash flows from investing activities:
Purchases of seismic equipment held for lease	(234)	(583)
Purchases of property and equipment	(128)	(77)
Sale of used lease pool equipment	6,020	2,169
Net cash provided by investing activities	5,658	1,509
Cash flows from financing activities:
Net payments on revolving line of credit	(3,500)	(9,400)
Payments on term loan and other borrowings	(2,807)	(1,612)
Net proceeds from preferred stock offering	774	7,117
Preferred stock dividends	(401)	(114)
Net cash used in financing activities	(5,934)	(4,009)
Effect of changes in foreign exchange rates on cash and cash equivalents	(169)	(857)
Net change in cash and cash equivalents	3,641	(273)
Cash and cash equivalents, beginning of period	3,511	3,769
Cash and cash equivalents, end of period	7,152	3,496
Supplemental cash flow information:
Interest paid	120	504
Income taxes paid	159	529
Purchases of seismic equipment held for lease in accounts payable at end of period	$ 42	$ 148