Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Apr. 30, 2023	Apr. 30, 2022
Cash flows from operating activities:
Net loss	$ (240)	$ (2,419)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	481	479
Stock-based compensation	50	236
Provision for inventory obsolescence	0	23
Changes in:
Accounts receivable	(3,462)	(871)
Unbilled revenue	11	(26)
Inventories	979	(260)
Prepaid expenses and other current and long-term assets	1,308	286
Income taxes receivable and payable	206	(66)
Accounts payable, accrued expenses and other current liabilities	(2,788)	(622)
Deferred revenue and customer deposits	606	(115)
Net cash used in operating activities	(2,987)	(3,522)
Cash flows from investing activities:
Purchases of property and equipment	(57)	(107)
Sale of other equipment	138	283
Net cash provided by investing activities	81	176
Cash flows from financing activities:
Purchase of treasury stock	0	(1)
Net proceeds from short-term loan	2,945	0
Preferred stock dividends	0	(947)
Net cash provided by (used in) financing activities	2,945	(948)
Effect of changes in foreign exchange rates on cash and cash equivalents	(2)	(3)
Net increase (decrease) in cash and cash equivalents	37	(4,297)
Cash and cash equivalents, beginning of period	778	5,114
Cash and cash equivalents, end of period	815	817
Supplemental cash flow information:
Interest paid	204	4
Income taxes paid	189	277
Other Machinery and Equipment [Member]
Adjustments to reconcile net loss to net cash used in operating activities:
Gross profit from sale of equipment	$ (138)	$ (167)