Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Apr. 30, 2022	Apr. 30, 2021
Operating activities
Net loss	$ (885)	$ (843)
Adjustments to reconcile net loss to net cash flows used in operating activities
Depreciation and amortization	995	1,122
Deferred tax expense/(benefit)	157	(157)
Stock-based compensation expense	236	272
Provision on uncollectible accounts	(25)	22
Gain on disposal of fixed assets	(1)	0
Changes in operating assets and liabilities
Accounts receivable	3,493	1,568
Inventories, net	(1,817)	(2,873)
Costs and estimated earnings in excess of billings on uncompleted contracts	(3,799)	1,806
Accounts payable	2,042	3,239
Accrued compensation and payroll taxes	(484)	221
Customers' deposits	533	128
Income taxes receivable and payable	(625)	302
Prepaid expenses and other current assets	(923)	(2,588)
Other assets and liabilities	(1,707)	(444)
Net cash used in operating activities	(7,108)	(2,427)
Investing activities
Capital expenditures	(400)	(424)
Proceeds from sales of property and equipment	70	0
Net cash used in investing activities	(330)	(424)
Financing activities
Proceeds from revolving lines	16,870	69
Payments of debt on revolving lines	(11,566)	(4,168)
Payments of debt on mortgage	0	(892)
Payments of principal on finance obligation		(90)
Payments of other debt	(86)	(65)
Decrease in drafts payable	(29)	16
Stock options exercised and taxes paid related to restricted shares vested	17	0
Net cash provided by financing activities	5,095	3,947
Effect of exchange rate changes on cash, cash equivalents and restricted cash	471	176
Net (decrease)/increase in cash, cash equivalents and restricted cash	(1,872)	1,272
Cash, cash equivalents and restricted cash - beginning of period	9,771	8,375
Cash, cash equivalents and restricted cash - end of period	7,899	9,647
Supplemental cash flow information
Interest paid	350	153
Income taxes paid	1,138	(35)
Land and Buildings in Lebanon, Tennessee [Member]
Financing activities
Payments of principal on finance obligation	(21)	(34)
Finance Lease Obligations [Member]
Financing activities
Proceeds from finance obligation, net of issuance costs	0	9,138
Payments of principal on finance obligation	(90)	(117)
Unbilled Revenues [Member]
Changes in operating assets and liabilities
Unbilled accounts receivable	$ (4,298)	$ (4,202)