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Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands | Cumulative Effect, Period of Adoption, Adjustment [Member] Common Stock Outstanding [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member] Additional Paid-in Capital [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member] Retained Earnings [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member] AOCI Attributable to Parent [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member] Treasury Stock [Member] | Common Stock Outstanding [Member] | Additional Paid-in Capital [Member] | Retained Earnings [Member] | AOCI Attributable to Parent [Member] | Treasury Stock [Member] | Total
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Balance (in shares) at Dec. 31, 2018 |  |  |  |  |  | 21,398,182 |  |  |  |  |
Balance at Dec. 31, 2018 |  |  |  |  |  | $ 214 | $ 154,388 | $ (114,926) | $ (24,842) | $ 0 |
Net income (loss) |  |  |  |  |  | 0 | 0 | (3,949) | 0 | 0 | $ (3,949)
Employee benefit related, net of tax |  |  |  |  |  | 0 | 0 | 0 | 447 | 0 | $ (447)
Foreign currency translation adjustment, net of tax |  |  |  |  |  | $ 0 | 0 | 0 | 344 | 0 |
Noncash compensation (in shares) |  |  |  |  |  | 60,000 |  |  |  |  |
Noncash compensation |  |  |  |  |  | $ 0 | 469 | 0 | 0 | 0 |
Treasury stock (in shares) |  |  |  |  |  | (10,000) |  |  |  |  |
Treasury stock |  |  |  |  |  | $ 0 | 0 | 0 | 0 | 0 |
Retire treasury stock (in shares) |  |  |  |  |  | (149,756) |  |  |  |  |
Retire treasury stock |  |  |  |  |  | $ (1) | (155) | 0 | 0 | 0 |
Exercise of stock options (in shares) |  |  |  |  |  |  |  |  |  |  | 0
Balance (in shares) at Dec. 31, 2019 |  |  |  |  |  | 21,298,426 |  |  |  |  |
Balance at Dec. 31, 2019 | $ 0 | $ 0 | $ 1,442 | $ 0 | $ 0 | $ 213 | 154,702 | (117,433) | (24,051) | 0 | $ 13,431
Net income (loss) |  |  |  |  |  | 0 | 0 | 1,668 | 0 | 0 | 1,668
Employee benefit related, net of tax |  |  |  |  |  | 0 | 0 | 0 | (423) | 0 | $ 423
Foreign currency translation adjustment, net of tax |  |  |  |  |  | $ 0 | 0 | 0 | (224) | 0 |
Noncash compensation (in shares) |  |  |  |  |  | 70,000 |  |  |  |  |
Noncash compensation |  |  |  |  |  | $ 0 | 426 | 0 | 0 | 0 |
Retire treasury stock (in shares) |  |  |  |  |  | (82,424) |  |  |  |  |
Retire treasury stock |  |  |  |  |  | $ 0 | (99) | 0 | 0 | 0 |
Exercise of stock options (in shares) |  |  |  |  |  | 14,956 |  |  |  |  | 306,500
Exercise of stock options |  |  |  |  |  | $ 0 | (4) | 0 | 0 | 0 |
Balance (in shares) at Dec. 31, 2020 |  |  |  |  |  | 21,300,958 |  |  |  |  |
Balance at Dec. 31, 2020 |  |  |  |  |  | $ 213 | $ 155,025 | $ (115,765) | $ (24,698) | $ 0 | $ 14,775

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