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Consolidated Statements of Cash Flows (Unaudited) - USD ($)
$ in Thousands
 6 Months Ended
Jul. 31, 2023
Jul. 31, 2022
Operating activities    
Net income $ 48 $ 983
Adjustments to reconcile net income to net cash provided by (used in) operating activities    
Depreciation and amortization 1,791 1,926
Deferred tax expense 191 236
Stock-based compensation expense 456 520
Provision on uncollectible accounts 8 14
Gain (loss) from disposal of fixed assets (5) 16
Changes in operating assets and liabilities    
Accounts receivable (9,865) (5,860)
Inventories 882 (2,756)
Costs and estimated earnings in excess of billings on uncompleted contracts 2,495 (3,446)
Accounts payable 8,044 850
Accrued compensation and payroll taxes (1,650) (716)
Customers' deposits 534 1,380
Income taxes receivable and payable (766) (545)
Prepaid expenses and other current assets 989 (403)
Other assets and liabilities 389 2,251
Net cash provided by (used in) operating activities 3,533 (11,172)
Investing activities    
Capital expenditures (6,797) (2,030)
Proceeds from insurance recovery for property and equipment 5 0
Proceeds from sales of property and equipment 0 69
Net cash used in investing activities (6,792) (1,961)
Financing activities    
Proceeds from revolving credit lines 96,920 42,813
Payments of debt on revolving credit lines (92,091) (31,482)
Payments of other debt (124) (146)
(Decrease) increase in drafts payable (178) 29
Repurchase of common stock (312) (43)
Stock options exercised and taxes paid related to restricted shares vested (273) (230)
Net cash provided by financing activities 3,732 10,719
Effect of exchange rate changes on cash, cash equivalents and restricted cash 61 336
Net increase (decrease) in cash, cash equivalents and restricted cash 534 (2,078)
Cash, cash equivalents and restricted cash - beginning of period 6,793 9,771
Cash, cash equivalents and restricted cash - end of period 7,327 7,693
Supplemental cash flow information    
Cash interest paid 1,302 808
Cash income taxes paid 2,234 1,970
Fixed assets acquired under finance leases - non-cash 139 0
Fixed assets acquired from non affiliates - non-cash 4,357 0
Finance Lease Obligations [Member]    
Financing activities    
Payments of principal on finance obligation (154) (178)
Land and Buildings in Lebanon, Tennessee [Member]    
Financing activities    
Payments of principal on finance obligation (56) (44)
Unbilled Revenues [Member]    
Changes in operating assets and liabilities    
Unbilled accounts receivable $ (8) $ (5,622)