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Consolidated Statement of Stockholders' Equity (Unaudited) - USD ($)
$ in Thousands
Common Stock [Member]
Additional paid-in Capital [Member]
Accumulated other comprehensive income (loss) [Member]
Retained earnings [Member]
Total
Balance at Dec. 31, 2017 $ 9 $ 23,801 $ (5,798) $ (463) $ 17,549
Balance (in shares) at Dec. 31, 2017 8,726,045        
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Net income       (574) (574)
Stock-based compensation   148     148
Foreign currency translation adjustment     (166)   (166)
Pension adjustment, net of taxes     (15)   (15)
Balance at Mar. 31, 2018 $ 9 23,949 (5,979) (1,037) 16,942
Balance (in shares) at Mar. 31, 2018 8,726,045        
Balance at Dec. 31, 2018 $ 9 23,966 (5,897) (6,127) $ 11,951
Balance (in shares) at Dec. 31, 2018 8,726,045       8,726,045
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Net income       5,647 $ 5,647
Stock-based compensation   5     5
Foreign currency translation adjustment     (312)   (312)
Pension adjustment, net of taxes     90   90
Balance at Mar. 31, 2019 $ 9 $ 23,971 $ (6,119) $ (480) $ 17,381
Balance (in shares) at Mar. 31, 2019 8,726,045       8,726,045