Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2019	Jan. 31, 2018	Jan. 31, 2017
Cash flows from operating activities:
Net loss	$ (19,840)	$ (21,069)	$ (33,153)
Adjustments to reconcile net loss to net cash provided by operating activities:
Depreciation and amortization	11,814	16,637	28,275
Stock-based compensation	781	903	737
Impairment of intangible assets	0	1,466	0
Provision for doubtful accounts, net of charge offs	200	1,013	750
Provision for inventory obsolescence	140	815	75
Gross (profit) loss from sale of lease pool equipment	(2,367)	(4,906)	298
Loss on sale of business	5,405	0	0
Deferred tax expense	(376)	(20)	934
Non-current prepaid tax	1,577	182	0
Changes in:
Trade accounts receivable	1,292	4,405	7,345
Unbilled revenue	(340)	0	0
Inventories	(781)	685	850
Income taxes receivable and payable	0	0	475
Accounts payable, accrued expenses and other current liabilities	(722)	(455)	(2,189)
Prepaids expenses and other current assets, net	(1,382)	1,002	(1,327)
Deferred revenue	567	0	0
Foreign exchange losses net of gains	171	61	84
Net assets held for sale	(1,596)	0	0
Net cash (used in) provided by operating activities	(5,457)	719	3,154
Cash flows from investing activities:
Purchases of seismic equipment held for lease	(1,717)	(909)	(636)
Acquisition of assets	(3,000)	0	0
Purchases of property and equipment	(814)	(407)	(283)
Sales of used lease pool equipment	5,663	10,313	5,331
Sale of business, net of cash sold	(147)	0	0
Net cash (used in) provided by investing activities	(15)	8,997	4,412
Cash flows from financing activities:
Net payments on revolving line of credit	0	(3,500)	(10,900)
Payments on term loan and other borrowings	0	(2,807)	(3,217)
Net proceeds from preferred stock offering	6,853	4,174	7,294
Preferred stock dividends	(1,708)	(905)	(486)
Purchase of treasury stock	0	0	(4)
Net cash provided (used in) financing activities	5,145	(3,038)	(7,313)
Effect of changes in foreign exchange rates on cash, cash equivalents and restricted cash	(270)	(43)	(511)
Net increase (decrease) in cash and cash equivalents including cash classified within current assets held for sale	458	0	0
Less: Net increase (decrease) in cash classified within current assets held for sale	(458)	0	0
Net increase (decrease) in cash, cash equivalents and restricted cash	(597)	6,635	(258)
Cash and cash equivalents, beginning of year	10,146	3,511	3,769
Cash and cash equivalents, end of year	$ 9,549	$ 10,146	$ 3,511