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Earnings (Loss) per Share - Schedule of Earnings Per Share, Basic and Diluted (Details) - USD ($)
$ / shares in Units, $ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2017
Sep. 30, 2016
Sep. 30, 2017
Sep. 30, 2016
Earnings (loss) per share:        
Net (loss) earnings [1],[2] $ (2,661) $ 2,156 $ 1,927 $ 6,875
Weighted average common shares outstanding - basic [3] 3,872,829 3,827,899 3,871,075 3,785,784
Assumed exercise of stock options [3],[4] 72,623 74,134 70,486
Weighted average common shares outstanding - diluted [3],[4] 3,872,829 3,900,522 3,945,209 3,856,270
Basic [1],[5] $ (0.69) $ 0.56 $ 0.50 $ 1.82
Diluted [1],[5] $ (0.69) $ 0.55 $ 0.49 $ 1.78
[1] Income tax expense, net earnings, and earnings per share for the periods ended September 30, 2016 have been recast to reflect the early adoption of Accounting Standards Update ("ASU") 2016-09
[2] Net earnings for the periods ended September 30, 2016 have been recast to reflect the early adoption of ASU 2016-09.
[3] Share and per share values for the periods ended September 30, 2016 have been adjusted to give effect to the 5% stock dividend paid during December 2016.
[4] Net (loss) earnings, earnings per share, and assumed exercise of stock options for the periods ended September 30, 2016 have been recast to reflect the early adoption of ASU 2016-09.
[5] Per share amounts for the periods ended September 30, 2016 have been adjusted to give effect to the 5% stock dividend paid during December 2016.