Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2023	Jan. 31, 2022
Cash flows from operating activities:
Net loss	$ (8,832)	$ (15,085)
Adjustments to reconcile net loss to net cash used in operating activities:
PPP loan forgiveness	0	(850)
Depreciation and amortization	1,887	2,214
Stock-based compensation	654	643
Non-cash cumulative translation adjustment for discontinued operations	1,626	0
(Recovery) provision for doubtful accounts, net of charge offs	0	(453)
Provision for inventory obsolescence	445	921
Deferred tax benefit	(62)	(106)
Changes in:
Accounts receivable	4,890	(3,195)
Unbilled revenue	(26)	(57)
Inventories	(1,756)	(3,074)
Income taxes receivable and payable	441	37
Accounts payable, accrued expenses and other current liabilities	775	713
Prepaid expenses and other current and long-term assets	(10)	(565)
Deferred revenue	(1,998)	1,878
Net cash used in operating activities	(2,905)	(17,134)
Cash flows from investing activities:
Cost incurred to develop technology	(12)	0
Purchases of property and equipment	(570)	(834)
Sale of assets held for sale	1,052	5,437
Sale of business, net of cash sold	0	761
Net cash provided by investing activities	470	5,364
Cash flows from financing activities:
Net proceeds from preferred stock offering	0	14,676
Net proceeds from common stock offering	0	43
Repurchase of common stock	(1)	(2)
Preferred stock dividends	(1,894)	(2,530)
Net cash (used in) provided by financing activities	(1,895)	12,187
Effect of changes in foreign exchange rates on cash and cash equivalents	(6)	86
Net (decrease) increase in cash and cash equivalents	(4,336)	503
Cash and cash equivalents, beginning of period	5,114	4,611
Cash and cash equivalents, end of period	778	5,114
Lease Pool Equipment [Member]
Adjustments to reconcile net loss to net cash used in operating activities:
Gross profit from sale of equipment	(1,052)	0
Other Machinery and Equipment [Member]
Adjustments to reconcile net loss to net cash used in operating activities:
Gross profit from sale of equipment	$ 113	$ (155)