Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Oct. 31, 2022	Oct. 31, 2021
Cash flows from operating activities:
Net loss	$ (9,498)	$ (9,222)
Adjustments to reconcile net loss to net cash used in operating activities:
PPP loan forgiveness	0	(850)
Depreciation and amortization	1,414	1,721
Stock-based compensation	524	419
Non-cash cumulative translation adjustment for discontinued operations	1,626	0
Provision for inventory obsolescence	68	(453)
Changes in:
Accounts receivable	4,981	(4,444)
Unbilled revenue	1	(27)
Inventories	(2,899)	(183)
Prepaid expenses and other current and long-term assets	506	(293)
Income taxes receivable and payable	(16)	3
Accounts payable, accrued expenses and other current liabilities	983	1,696
Deferred revenue	328	172
Net cash used in operating activities	(2,251)	(11,228)
Cash flows from investing activities:
Purchases of property and equipment	(531)	(139)
Sale of assets held for sale	382	3,187
Sale of a business, net of cash sold	0	761
Net cash (used in) provided by investing activities	(149)	3,809
Cash flows from financing activities:
Purchase of treasury stock	(1)	(2)
Net proceeds from preferred stock offering	0	5,145
Net proceeds from common stock offering	0	43
Preferred stock dividends	(1,894)	(1,842)
Net cash (used in) provided by financing activities	(1,895)	3,344
Effect of changes in foreign exchange rates on cash and cash equivalents	(7)	86
Net decrease in cash and cash equivalents	(4,302)	(3,989)
Cash and cash equivalents, beginning of period	5,114	4,611
Cash and cash equivalents, end of period	812	622
Supplemental cash flow information:
Interest paid	4	26
Income taxes paid	371	149
Lease Pool Equipment [Member]
Adjustments to reconcile net loss to net cash used in operating activities:
(Gross profit) loss from sale of assets held-for-sale	(382)	388
Other Machinery and Equipment [Member]
Adjustments to reconcile net loss to net cash used in operating activities:
(Gross profit) loss from sale of assets held-for-sale	$ 113	$ (155)