Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jul. 31, 2018	Jul. 31, 2017
Cash flows from operating activities:
Net loss	$ (10,494)	$ (8,029)
Adjustments to reconcile net loss to net cash (used in) provided by operating activities:
Depreciation and amortization	6,399	9,095
Stock-based compensation	368	461
Provision for inventory obsolescence	115	67
Provision for doubtful accounts, net of charge offs	200	0
Gross profit from sale of lease pool equipment	(1,246)	(2,852)
Deferred tax expense	(306)	(57)
Changes in:
Trade accounts and contracts receivable	2,227	5,877
Unbilled revenue	(341)	0
Inventories	(1,406)	(107)
Prepaid expenses and other current assets	(1,435)	201
Income taxes receivable and payable	665	430
Accounts payable, accrued expenses and other current liabilities	(1,551)	(929)
Deferred revenue	942	0
Foreign exchange losses net of gains	64	(71)
Net cash (used in) provided by operating activities	(5,799)	4,086
Cash flows from investing activities:
Purchases of seismic equipment held for lease	(1,386)	(234)
Acquisition of assets	(3,000)	0
Purchases of property and equipment	(487)	(128)
Sale of used lease pool equipment	2,792	6,020
Net cash (used in) provided by investing activities	(2,081)	5,658
Cash flows from financing activities:
Net payments on revolving line of credit	0	(3,500)
Payments on term loan and other borrowings	0	(2,807)
Net proceeds from preferred stock offering	5,450	774
Preferred stock dividends	(796)	(401)
Net cash provided by (used in) financing activities	4,654	(5,934)
Effect of changes in foreign exchange rates on cash, cash equivalents and restricted cash	189	(169)
Net (decrease) increase in cash, cash equivalents and restricted cash	(3,037)	3,641
Cash, cash equivalents and restricted cash, beginning of period	10,146	3,511
Cash, cash equivalents and restricted cash, end of period	7,109	7,152
Supplemental cash flow information:
Interest paid	2	120
Income taxes paid	268	159
Purchases of seismic equipment held for lease in accounts payable at end of period	$ 264	$ 42