Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2025	Jan. 31, 2024
Cash flows from operating activities:
Net income	$ 5,074	$ 274
Depreciation and amortization	944	1,516
Stock-based compensation	235	261
Provision for inventory obsolescence	68	341
Deferred tax expense (benefit)	35	(153)
Changes in:
Accounts receivable	(5,246)	(3,343)
Unbilled revenue	(7)	25
Inventories	(441)	(3,601)
Income taxes receivable and payable	360	635
Accounts payable, accrued expenses and other current liabilities	45	(334)
Prepaid expenses and other current and long-term assets	1,897	(847)
Increase (Decrease) in Contract with Customer, Liability	(1,856)	3,078
Net cash provided by (used in) operating activities	651	(4,967)
Cash flows from investing activities:
Purchases of property and equipment	(437)	(290)
Sale of other assets	457	476
Proceeds from the sale of Klein, net	0	10,832
Net cash provided by investing activities	20	11,018
Cash flows from financing activities:
Net proceeds from short-term loan	0	2,947
Payment on short-term loan	0	(3,750)
Refund of prepaid interest on short-term loan	0	214
Preferred stock conversion transaction costs	(619)	0
Preferred stock dividends	0	(946)
Net cash used in financing activities	(619)	(1,535)
Effect of changes in foreign exchange rates on cash and cash equivalents	(5)	(5)
Net increase in cash and cash equivalents	47	4,511
Cash and cash equivalents, beginning of period	5,289	778
Cash and cash equivalents, end of period	5,336	5,289
Other Machinery and Equipment [Member]
Cash flows from operating activities:
Gross profit from sale of equipment	(457)	(476)
Klein Marine Services, Inc. [Member]
Cash flows from operating activities:
Gain on sale of Klein	$ 0	$ (2,343)