Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Apr. 30, 2018	Apr. 30, 2017
Cash flows from operating activities:
Net loss	$ (5,905)	$ (2,665)
Adjustments to reconcile net loss to net cash provided by operating activities:
Depreciation and amortization	3,303	4,791
Stock-based compensation	126	224
Provision for doubtful accounts, net of charge offs	(200)	0
Provision for inventory obsolescence	0	8
Gross profit from sale of lease pool equipment	(536)	(2,689)
Deferred tax benefit	(202)	(27)
Changes in working capital items:
Trade accounts and contracts receivable	2,418	2,175
Unbilled revenue	(930)	0
Inventories	(844)	(1,403)
Prepaid expenses and other current assets	(1,520)	549
Income taxes payable	642	149
Accounts payable, accrued expenses and other current liabilities	(47)	48
Deferred revenue	313	0
Foreign exchange losses net of gains	16	(48)
Net cash (used in) provided by operating activities	(3,366)	1,112
Cash flows from investing activities:
Purchases of seismic equipment held for lease	(190)	(158)
Acquisition of assets	(3,000)	0
Purchases of property and equipment	(113)	(28)
Sale of used lease pool equipment	1,620	4,496
Net cash (used in) provided by investing activities	(1,683)	4,310
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	3,812	27
Preferred stock dividends	(385)	(194)
Net cash provided by (used in) financing activities	3,427	(6,474)
Effect of changes in foreign exchange rates on cash, cash equivalents and restricted cash	322	(3)
Net change in cash, cash equivalents and restricted cash	(1,300)	(1,055)
Cash, cash equivalents and restricted cash, beginning of period	10,146	3,511
Cash, cash equivalents and restricted cash, end of period	8,846	2,456
Supplemental cash flow information:
Interest paid	1	92
Income taxes paid	46	13
Purchases of seismic equipment held for lease in accounts payable at end of period	$ 1,186	$ 119