Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jul. 31, 2023	Jul. 31, 2022
Cash flows from operating activities:
Net loss	$ (1,734)	$ (4,339)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	940	946
Stock-based compensation	158	388
Provision for inventory obsolescence	0	45
Changes in:
Accounts receivable	(3,238)	1,998
Unbilled revenue	31	15
Inventories	(333)	(461)
Prepaid expenses and other current and long-term assets	1,329	168
Income taxes receivable and payable	63	19
Accounts payable, accrued expenses and other current liabilities	(1,556)	(1,126)
Deferred revenue and customer deposits	1,199	95
Net cash used in operating activities	(3,477)	(2,497)
Cash flows from investing activities:
Purchases of property and equipment	(102)	(250)
Sale of other equipment	336	361
Net cash provided by investing activities	234	111
Cash flows from financing activities:
Purchase of treasury stock	0	(1)
Net proceeds from short-term loan	2,947	0
Preferred stock dividends	0	(1,894)
Net cash provided by (used in) financing activities	2,947	(1,895)
Effect of changes in foreign exchange rates on cash and cash equivalents	12	0
Net decrease in cash and cash equivalents	(284)	(4,281)
Cash and cash equivalents, beginning of period	778	5,114
Cash and cash equivalents, end of period	494	833
Supplemental cash flow information:
Interest paid	407	4
Income taxes paid	425	277
Other Machinery and Equipment [Member]
Adjustments to reconcile net loss to net cash used in operating activities:
Gross profit from sale of equipment	$ (336)	$ (245)