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Net Income (Loss) Per Share (Tables)
6 Months Ended
Jun. 30, 2019
Earnings Per Share [Abstract]  
Schedule of basic and diluted earnings per share attributable

   Three Months Ended  Six Months Ended
   June 30, 2019  June 30, 2019
Basic weighted-average number of shares   6,874,679    6,874,314 
Effect of dilutive securities          
     Stock options   12,221    881 
Diluted weighted-average number of shares   6,886,900    6,875,195