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Consolidated Statements of Cash Flows (Unaudited) - USD ($)
$ in Thousands
 9 Months Ended
Oct. 31, 2023
Oct. 31, 2022
Operating activities    
Net income $ 3,411 $ 2,711
Adjustments to reconcile net income to net cash provided by (used in) operating activities    
Depreciation and amortization 2,774 2,781
Deferred tax expense 145 358
Stock-based compensation expense 686 763
Non-cash pension termination expense 0 813
Provision on uncollectible accounts (37) 20
(Loss) gain from disposal of fixed assets (13) 134
Changes in operating assets and liabilities    
Accounts receivable (5,377) (4,345)
Inventories (1,426) (1,545)
Costs and estimated earnings in excess of billings on uncompleted contracts (175) (3,086)
Accounts payable 9,346 513
Accrued compensation and payroll taxes 1,167 126
Customers' deposits 1,272 1,250
Income taxes payable 327 530
Prepaid expenses and other current assets 205 (785)
Other assets and liabilities (1,912) 1,699
Net cash provided by (used in) operating activities 7,617 (5,100)
Investing activities    
Capital expenditures (8,204) (3,236)
Proceeds from insurance recovery for property and equipment 5 0
Proceeds from sales of property and equipment 0 117
Net cash used in investing activities (8,199) (3,119)
Financing activities    
Proceeds from revolving credit lines 120,467 62,778
Payments of debt on revolving credit lines (117,419) (54,259)
Payments of other debt (179) (198)
Decrease in drafts payable (199) (130)
Repurchase of common stock (941) (43)
Stock options exercised and taxes paid related to restricted shares vested (273) (222)
Net cash provided by financing activities 1,196 7,610
Effect of exchange rate changes on cash, cash equivalents and restricted cash 1 563
Net increase (decrease) in cash, cash equivalents and restricted cash 615 (46)
Cash, cash equivalents and restricted cash - beginning of period 6,793 9,771
Cash, cash equivalents and restricted cash - end of period 7,408 9,725
Supplemental cash flow information    
Cash interest paid 1,754 1,505
Cash income taxes paid 2,546 2,107
Fixed assets acquired from non affiliates - non-cash 4,357 0
Finance Lease Obligations [Member]    
Financing activities    
Payments of principal on finance obligation (176) (251)
Land and Buildings in Lebanon, Tennessee [Member]    
Financing activities    
Payments of principal on finance obligation (84) (65)
Unbilled Revenues [Member]    
Changes in operating assets and liabilities    
Unbilled accounts receivable $ (2,776) $ (7,037)