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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)
$ in Thousands
 6 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Cash flows from operating activities:    
Consolidated net income (loss) $ 279 $ (757)
Adjustments to reconcile consolidated net income (loss) to net cash provided by operating activities:    
Depreciation and amortization 1,370 1,241
Gain on loan forgiveness (580) 0
Stock-based compensation 614 468
Deferred income taxes (61) (237)
Pension cost 322 396
Changes in operating assets and liabilities:    
Accounts receivable (140) 1,003
Prepaid expenses and other current assets 239 (210)
Other assets 168 (217)
Accounts payable and accrued expenses 4,658 373
Accrued salaries, wages and related benefits 0 630
Income and other taxes (1,283) 588
Net cash provided by operating activities 5,586 3,278
Cash flows from investing activities:    
Capital expenditures (1,473) (970)
Net cash used in investing activities (1,473) (970)
Cash flows from financing activities:    
Proceeds from stock option exercises 1,750 0
Withholding taxes on net settlement of stock-based compensation (763) 0
Payment of long-term obligations (574) (227)
Proceeds from bank loan 0 580
Net cash provided by financing activities 413 353
Effect of exchange rate changes on cash and cash equivalents (40) (50)
Net increase in cash and cash equivalents 4,486 2,611
Cash and cash equivalents, beginning of period 17,573 10,874
Cash and cash equivalents, end of period 22,059 13,485
Supplemental disclosures of cash flow information:    
Shares withheld for withholding taxes on net settlement for stock-based compensation 763 0
Cash paid for income taxes 724 94
Cash paid for operating leases 860 1,254
Cash paid for interest $ 17 $ 15