Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jul. 31, 2020	Jul. 31, 2019
Cash flows from operating activities:
Net loss	$ (13,246)	$ (5,551)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	3,210	3,960
Stock-based compensation	449	341
Impairment of intangible assets	2,531	0
Loss on disposal of discontinued operations	1,859	0
Provision for doubtful accounts, net of charge offs	470	0
Provision for inventory obsolescence	234	0
Gross profit from sale of lease pool equipment	(1,326)	(780)
Deferred tax expense	263	135
Changes in:
Accounts receivable	4,404	100
Unbilled revenue	(9)	3
Inventories	(675)	(2,372)
Prepaid expenses and other current and long-term assets	766	(11)
Income taxes receivable and payable	0	(47)
Accounts payable, accrued expenses and other current liabilities	(1,583)	632
Deferred revenue	87	(50)
Foreign exchange losses net of gains	0	137
Net cash used in operating activities	(2,566)	(3,503)
Cash flows from investing activities:
Purchases of seismic equipment held for lease	(110)	(230)
Purchases of property and equipment	(302)	(573)
Sale of used lease pool equipment	2,010	1,186
Sale of business, net of cash sold	0	239
Net cash provided by investing activities	1,598	622
Cash flows from financing activities:
Proceeds from exercise of stock options	0	26
Net proceeds from preferred stock offering	0	1,980
Preferred stock dividends	(1,118)	(970)
Proceed from PPP loans	1,607	0
Net cash provided by financing activities	489	1,036
Effect of changes in foreign exchange rates on cash, cash equivalents and restricted cash	(117)	(65)
Net decrease in cash, cash equivalents and restricted cash	(596)	(1,910)
Cash, cash equivalents and restricted cash, beginning of period	3,234	9,549
Cash, cash equivalents and restricted cash, end of period	2,638	7,639
Supplemental cash flow information:
Interest paid	23	27
Income taxes paid	246	182
Purchases of seismic equipment held for lease in accounts payable at end of period	$ 0	$ 0