Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Oct. 31, 2022	Oct. 31, 2021
Operating activities
Net income	$ 2,711	$ 3,068
Adjustments to reconcile net income to net cash flows used in operating activities
Depreciation and amortization	2,781	3,259
Deferred tax expense	358	361
Stock-based compensation expense	763	818
Non-cash pension termination expense	813	0
Provision on uncollectible accounts	20	11
Loss on disposal of fixed assets	134	122
Changes in operating assets and liabilities
Accounts receivable	(4,345)	(11,189)
Inventories, net	(1,545)	(3,241)
Costs and estimated earnings in excess of billings on uncompleted contracts	(3,086)	1,794
Accounts payable	513	5,859
Accrued compensation and payroll taxes	126	1,800
Customers' deposits	1,250	1,413
Income taxes receivable and payable	530	729
Prepaid expenses and other current assets	(785)	(1,011)
Other assets and liabilities	1,699	(658)
Net cash used in operating activities	(5,100)	(32)
Investing activities
Capital expenditures	(3,236)	(1,951)
Proceeds from sales of property and equipment	117	44
Net cash used in investing activities	(3,119)	(1,907)
Financing activities
Proceeds from revolving lines	62,778	13,289
Payments of debt on revolving lines	(54,259)	(11,436)
Payments of debt on mortgage	0	(4,823)
Payments of principal on finance obligation	(251)	(203)
Payments of other debt	(198)	(174)
Increase/(decrease) in drafts payable	(130)	(8)
Repurchase of common stock	(43)	(496)
Stock options exercised and taxes paid related to restricted shares vested	(222)	(233)
Net cash provided by financing activities	7,610	5,259
Effect of exchange rate changes on cash, cash equivalents and restricted cash	563	69
Net (decrease)/increase in cash, cash equivalents and restricted cash	(46)	3,389
Cash, cash equivalents and restricted cash - beginning of period	9,771	8,375
Cash, cash equivalents and restricted cash - end of period	9,725	11,764
Supplemental cash flow information
Interest paid	1,505	672
Income taxes paid	2,107	725
Land and Buildings in Lebanon, Tennessee [Member]
Financing activities
Payments of principal on finance obligation	(65)	(107)
Finance Lease Obligations [Member]
Financing activities
Proceeds from finance obligation, net of issuance costs	0	9,538
Payments of principal on finance obligation	(251)	(291)
Unbilled Revenues [Member]
Changes in operating assets and liabilities
Unbilled accounts receivable	$ (7,037)	$ (3,167)