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Net Income (Loss) Per Share, Basic and Diluted (Details) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2018
Jun. 30, 2017
Jun. 30, 2018
Jun. 30, 2017
Earnings Per Share [Abstract]        
Basic EPS (in shares) 5,982,711 5,340,234 5,953,818 5,286,179
Common stock warrants (in shares) 281,224 0 256,916 0
Common stock options (in shares) 1,270,911 0 1,195,010 0
Diluted EPS (in shares) 7,534,846 5,340,234 7,403,498 5,286,179
Net Income - Basic EPS $ 1,453 $ (850) $ 2,159 $ (1,722)
Net Income - Common stock warrants 0 0 0 0
Net Income - Common stock options 0 0 0 0
Net Income - Diluted EPS $ 1,453 $ (850) $ 2,159 $ (1,722)
Basic EPS (in dollars per share) $ 0.24 $ (0.16) $ 0.36 $ (0.33)
Diluted EPS (in dollars per share) $ 0.19 $ (0.16) $ 0.29 $ (0.33)