Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2022	Jan. 31, 2021
Operating activities
Net income/(loss)	$ 6,062	$ (7,642)
Adjustments to reconcile net income/(loss) to net cash flows (used in)/provided by operating activities
Depreciation and amortization	4,324	4,739
Deferred tax benefit	(195)	(669)
Stock-based compensation expense	1,101	1,044
Provision on uncollectible accounts	20	72
Loss on disposal of fixed assets	41	58
Changes in operating assets and liabilities
Accounts payable	3,196	730
Accrued compensation and payroll taxes	2,094	(1,597)
Inventories	(1,618)	2,418
Customers' deposits	990	(117)
Income taxes receivable and payable	955	213
Prepaid expenses and other current assets	(2,205)	(2,705)
Accounts receivable	(21,331)	2,596
Costs and estimated earnings in excess of billings on uncompleted contracts	2,213	(2,252)
Other assets and liabilities	2,130	3,030
Net cash (used in)/provided by operating activities	(2,574)	165
Investing activities
Capital expenditures	(2,262)	(1,963)
Proceeds from sales of property and equipment	9	2
Net cash used in investing activities	(2,253)	(1,961)
Financing activities
Proceeds from revolving lines	23,106	40,023
Payments of debt on revolving lines	(22,639)	(43,192)
Payments of debt on mortgage	(892)	0
Payments of principal on finance obligation	(375)	(432)
Payments of other debt	(260)	(371)
Decrease in drafts payable	58	0
Repurchase of common stock	(1,992)	0
Stock options exercised and taxes paid related to restricted shares vested	(210)	(191)
Net cash provided by/(used in) financing activities	6,233	(4,144)
Effect of exchange rate changes on cash, cash equivalents and restricted cash	(10)	(343)
Net increase/(decrease) in cash, cash equivalents and restricted cash	1,396	(6,283)
Cash, cash equivalents and restricted cash - beginning of period	8,375	14,658
Cash, cash equivalents and restricted cash - end of period	9,771	8,375
Supplemental cash flow information
Interest paid	791	540
Income taxes paid	1,346	107
Land and Buildings in Lebanon, Tennessee [Member]
Financing activities
Payments of principal on finance obligation	(124)	0
Term Loan [Member]
Financing activities
Proceeds from term loan	23	19
Proceeds from finance obligation, net of issuance costs	23	19
Finance Lease Obligations [Member]
Financing activities
Proceeds from term loan	9,538	0
Proceeds from finance obligation, net of issuance costs	9,538	0
Payments of principal on finance obligation	(375)	(432)
Unbilled Revenues [Member]
Changes in operating assets and liabilities
Unbilled accounts receivable	$ (351)	$ 247