Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Oct. 31, 2017	Oct. 31, 2016
Cash flows from operating activities:
Net loss	$ (13,310)	$ (23,299)
Adjustments to reconcile net loss to net cash provided by operating activities:
Depreciation and amortization	13,219	21,927
Stock-based compensation	685	587
Provision for inventory obsolescence	58	65
Gross profit from sale of lease pool equipment	(3,080)	(1,420)
Deferred tax benefit	(31)	(582)
Changes in working capital items:
Trade accounts and contracts receivable	5,129	10,308
Inventories	79	471
Prepaid expenses and other current assets	207	(893)
Income taxes payable	714	384
Accounts payable, accrued expenses, other current liabilities and deferred revenue	(1,244)	(4,242)
Foreign exchange gains net of losses	(252)	381
Net cash provided by operating activities	2,174	3,687
Cash flows from investing activities:
Purchases of seismic equipment held for lease	(321)	(604)
Purchases of property and equipment	(276)	(117)
Sale of used lease pool equipment	6,690	2,256
Net cash provided by investing activities	6,093	1,535
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)	(2,414)
Net proceeds from preferred stock offering	1,847	6,975
Preferred stock dividends	(630)	(294)
Purchase of treasury stock	0	(2)
Net cash used in financing activities	(5,090)	(5,135)
Effect of changes in foreign exchange rates on cash, cash equivalents and restricted cash	82	(624)
Net change in cash, cash equivalents and restricted cash	3,259	(537)
Cash, cash equivalents and restricted cash, beginning of period	3,511	3,769
Cash, cash equivalents and restricted cash, end of period	6,770	3,232
Supplemental cash flow information:
Interest paid	84	610
Income taxes paid	436	705
Purchases of seismic equipment held for lease in accounts payable at end of period	$ 65	$ 160