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Consolidated Statements of Changes in Shareholders' Equity (Unaudited) - 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, 2019 20,268,050            
Balance at Dec. 31, 2019 $ 2,026 $ 184,292 $ (2,531) $ (52,830) $ (21,231) $ 24 $ 109,750
Net income       2,717   35 2,752
Stock option exercises (in shares) 16,631            
Stock option exercises $ 2 74         76
Stock-based compensation – stock options   470         470
Stock-based compensation -restricted stock   64         64
Vesting of restricted stock (in shares) 12,501            
Vesting of restricted stock $ 2       (15)   (13)
Foreign currency translation adjustments     (765)       (765)
Balance (in shares) at Jun. 30, 2020 20,297,182            
Balance at Jun. 30, 2020 $ 2,030 184,900 (3,296) (50,113) (21,246) 59 112,334
Balance (in shares) at Mar. 31, 2020 20,281,516            
Balance at Mar. 31, 2020 $ 2,028 184,550 (3,338) (51,771) (21,239) 39 110,269
Net income       1,658   20 1,678
Stock option exercises (in shares) 8,998            
Stock option exercises $ 1 46         47
Stock-based compensation – stock options   278         278
Stock-based compensation -restricted stock   26         26
Vesting of restricted stock (in shares) 6,668            
Vesting of restricted stock $ 1       (7)   (6)
Foreign currency translation adjustments     42       42
Balance (in shares) at Jun. 30, 2020 20,297,182            
Balance at Jun. 30, 2020 $ 2,030 184,900 (3,296) (50,113) (21,246) 59 $ 112,334
Balance (in shares) at Dec. 31, 2020 20,373,519           15,959,984
Balance at Dec. 31, 2020 $ 2,037 185,464 (1,782) (47,598) (21,321) 123 $ 116,923
Net income       1,482   19 $ 1,501
Stock option exercises (in shares) 88,656           128,096
Stock option exercises $ 9 305     (52)   $ 262
Stock-based compensation – stock options   337         337
Stock-based compensation -restricted stock   33         33
Vesting of restricted stock (in shares) 12,501            
Vesting of restricted stock $ 1 (1)     (15)   (15)
Foreign currency translation adjustments     196       $ 196
Balance (in shares) at Jun. 30, 2021 20,474,676           16,051,707
Balance at Jun. 30, 2021 $ 2,047 186,138 (1,586) (46,116) (21,388) 142 $ 119,237
Balance (in shares) at Mar. 31, 2021 20,416,511            
Balance at Mar. 31, 2021 $ 2,042 185,674 (1,679) (46,927) (21,380) 131 117,861
Net income       811   11 822
Stock option exercises (in shares) 51,497            
Stock option exercises $ 5 278         283
Stock-based compensation – stock options   174         174
Stock-based compensation -restricted stock   12         12
Vesting of restricted stock (in shares) 6,668            
Vesting of restricted stock         (8)   (8)
Foreign currency translation adjustments     93       $ 93
Balance (in shares) at Jun. 30, 2021 20,474,676           16,051,707
Balance at Jun. 30, 2021 $ 2,047 $ 186,138 $ (1,586) $ (46,116) $ (21,388) $ 142 $ 119,237