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Consolidated Statements of Changes in Shareholders' Equity - USD ($)
$ in Thousands
Common Stock [Member]
Additional Paid-in Capital [Member]
AOCI Attributable to Parent [Member]
Retained Earnings [Member]
Treasury Stock [Member]
Noncontrolling Interest [Member]
Total
Balance (in shares) at Dec. 31, 2017 19,670,928            
Balance at Dec. 31, 2017 $ 1,966 $ 180,211 $ (1,611) $ (82,894) $ (18,469) $ (154) $ 79,049
Cumulative effect adjustment at Dec. 31, 2017 (71) (71)
Share repurchases (742) $ (742)
Stock option exercises (in shares) 382,407           422,793
Stock option exercises $ 39 1,529 $ 1,568
Tax withholdings on option exercises (55) (55)
Stock-based compensation -stock options   817         817
Stock-based compensation -restricted stock 73 73
Foreign currency translation adjustments     (1,175)       (1,175)
Net income       24,930   69 $ 24,999
Balance (in shares) at Dec. 31, 2018 20,053,335           15,920,585
Balance at Dec. 31, 2018 $ 2,005 182,630 (2,786) (58,035) (19,266) (85) $ 104,463
Share repurchases (1,957) $ (1,957)
Stock option exercises (in shares) 208,881           208,881
Stock option exercises $ 21 909 $ 930
Tax withholdings on option exercises (8) (8)
Stock-based compensation -stock options   623         623
Stock-based compensation -restricted stock 130 130
Foreign currency translation adjustments     255       255
Net income       5,205   109 $ 5,314
Stock-based compensation -restricted stock (in shares) 5,834            
Balance (in shares) at Dec. 31, 2019 20,268,050           15,866,868
Balance at Dec. 31, 2019 $ 2,026 $ 184,292 $ (2,531) $ (52,830) $ (21,231) $ 24 $ 109,750