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CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Cash flows from operating activities:    
Consolidated net income (loss) $ 644 $ (2,159)
Adjustments to reconcile consolidated net income (loss) to net cash provided by operating activities:    
Depreciation and amortization 2,266 2,697
Stock-based compensation 913 836
Deferred income taxes (618) (313)
Pension cost 791 335
Loss on disposal of property and equipment 48  
Changes in operating assets and liabilities:    
Accounts receivable (481) 1,216
Prepaid expenses and other current assets (555) 1,248
Other assets 270 332
Accounts payable, accrued expenses and other 155 (589)
Accrued salaries, wages and related benefits 1,449 (249)
Income and other taxes 778 926
Net cash provided by operating activities 5,660 4,280
Cash flows from investing activities:    
Capital expenditures (1,414) (1,667)
Proceeds from disposal of property and equipment 39  
Net cash used in investing activities (1,375) (1,667)
Cash flows from financing activities:    
Proceeds from bank loan 580  
Proceeds from exercise of stock options 2,596 11
Payment of long-term obligations (864) (567)
Purchase of treasury stock   (1,843)
Net cash provided by (used in) financing activities 2,312 (2,399)
Effect of exchange rate changes on cash and cash equivalents 102 (209)
Net increase in cash and cash equivalents 6,699 5
Cash and cash equivalents, beginning of year 10,874 10,869
Cash and cash equivalents, end of year 17,573 10,874
Supplemental disclosures of cash flow information:    
Cash paid for income taxes 348 962
Cash paid for operating leases 2,286 2,110
Cash paid for interest $ 141 $ 130