Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Apr. 30, 2020	Apr. 30, 2019
Cash flows from operating activities:
Net loss	$ (6,642)	$ (2,415)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	1,701	2,131
Stock-based compensation	230	172
Impairment of intangible assets	2,531	0
Provision for inventory obsolescence	22	0
Gross profit from sale of lease pool equipment	(850)	(363)
Deferred tax expense	0	135
Changes in:
Accounts receivable	3,728	76
Unbilled revenue	(9)	5
Inventories	(554)	(501)
Prepaid expenses and other current assets	201	(672)
Income taxes receivable and payable	424	2
Accounts payable, accrued expenses and other current liabilities	300	(382)
Deferred revenue	(153)	(23)
Foreign exchange losses net of gains	0	(16)
Net cash provided by (used in) operating activities	929	(1,851)
Cash flows from investing activities:
Purchases of seismic equipment held for lease	(110)	0
Purchases of property and equipment	(65)	(366)
Sale of used lease pool equipment	1,414	730
Sale of business, net of cash sold	0	239
Net cash provided by investing activities	1,239	603
Cash flows from financing activities:
Net proceeds from preferred stock offering	0	409
Preferred stock dividends	(559)	(471)
Net cash used in financing activities	(559)	(62)
Effect of changes in foreign exchange rates on cash, cash equivalents and restricted cash	(138)	(100)
Net decrease in cash, cash equivalents and restricted cash	1,471	(1,410)
Cash, cash equivalents and restricted cash, beginning of period	3,234	9,549
Cash, cash equivalents and restricted cash, end of period	4,705	8,139
Supplemental cash flow information:
Interest paid	11	14
Income taxes paid	149	97
Purchases of seismic equipment held for lease in accounts payable at end of period	$ 702	$ 0