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CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)
$ in Thousands
 12 Months Ended
Jan. 31, 2018
Jan. 31, 2017
Operating activities    
Net loss $ (9,976) $ (12,474)
Adjustments to reconcile net loss to net cash flows used in operating activities    
Depreciation and amortization 5,031 5,521
Loss on consolidation of joint venture 0 1,620
Gain on disposal of subsidiary (166) (127)
Deferred tax benefit (958) (33)
Stock-based compensation expense 1,447 1,446
Cash surrender value on life insurance policies 0 (135)
Provision on uncollectible accounts 15 657
Loss (gain) on disposal of fixed assets 219 (292)
Gain on sale of marketable securities 142 0
Changes in operating assets and liabilities    
Accounts payable 4,551 (1,917)
Accrued compensation and payroll taxes (1,780) (9,227)
Inventories (3,274) 5,452
Customers' deposits 2,596 (2,303)
Income taxes receivable and payable (75) (128)
Prepaid expenses and other current assets (471) (997)
Accounts receivable (1,076) 13,698
Costs and estimated earnings in excess of billings on uncompleted contracts 1,455 296
Other assets and liabilities 762 (6,514)
Net cash used in operating activities (1,842) (5,457)
Investing activities    
Net proceeds from sale of discontinued operations 0 9,606
Capital expenditures (2,532) (2,257)
Proceeds from sale of marketable securities 142 0
Acquisition of interest in subsidiary, net of cash acquired 0 (4,672)
Proceeds from surrender of corporate-owned life insurance policies 0 3,185
Proceeds from sales of property and equipment 1 4,356
Net cash (used in) provided by investing activities (2,389) 10,218
Financing activities    
Proceeds from revolving lines 40,485 40,033
Proceeds from debt 0 6,059
Payments of debt on revolving lines (37,354) (49,303)
Payments of other debt (211) (10,151)
Increase (decrease) in drafts payable 34 (323)
Proceeds (payments) on capitalized lease obligations 546 (1,677)
Release of treasury stock 170 120
Stock options exercised and restricted shares issued (214) 297
Net cash provided by (used in) financing activities 3,456 (14,945)
Effect of exchange rate changes on cash, cash equivalents and restricted cash 395 (70)
Net decrease in cash, cash equivalents and restricted cash (380) (10,254)
Cash, cash equivalents and restricted cash - beginning of period 8,701 18,955
Cash, cash equivalents and restricted cash - end of period 8,321 8,701
Supplemental cash flow information    
Interest paid 804 773
Income taxes paid 1,080 1,381
Fixed assets acquired under capital leases 841 8
Funds held in escrow related to the sale of Filtration assets $ 0 $ 502