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Earnings (Loss) Per Common Share - Schedule of Computations of Basic and Diluted Earnings (Loss) Per Common Share (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Numerator:      
Net income from continuing operations $ 3,351 $ 4,556 $ 2,229
Net income (loss) from discontinued operations $ 1,242 $ (1,372) $ (1,324)
Denominator:      
Weighted-average common shares outstanding (shares) 22,811 21,937 21,969
Basic earnings per common share from continuing operations (in USD per share) $ 0.14 $ 0.21 $ 0.10
Basic loss per common share from discontinued operations (in USD per share) $ 0.06 $ (0.06) $ (0.06)
Numerator:      
Net income from continuing operations $ 3,351 $ 4,556 $ 2,229
Net income (loss) from discontinued operations $ 1,242 $ (1,372) $ (1,324)
Denominator:      
Weighted-average common shares outstanding (shares) 22,811 21,937 21,969
Effect of dilutive securities from stock-based compensation plans (shares) 623 174 47
Denominator for diluted earnings per common share (shares) 23,434 22,111 22,016
Diluted earnings per common share from continuing operations (in USD per share) $ 0.14 $ 0.21 $ 0.10
Diluted loss per common share from discontinued operations (in USD per share) $ 0.06 $ (0.06) $ (0.06)