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Net Income (Loss) Per Share (Details) - shares
3 Months Ended 9 Months Ended
Sep. 30, 2017
Sep. 30, 2016
Sep. 30, 2017
Sep. 30, 2016
Weighted Average Number of Shares Outstanding Reconciliation [Abstract]        
Weighted average shares outstanding - basic 2,675,465 2,665,189 2,675,465 2,665,352
Effect of diluted securities 14,446 642 13,079 0
Weighted average shares outstanding - diluted 2,689,911 2,665,831 2,688,544 2,665,352
Options [Member]        
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]        
Securities excluded from the diluted earnings per share computation (in shares) 60,135 130,554 105,135 139,902
Warrant [Member]        
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]        
Securities excluded from the diluted earnings per share computation (in shares) 519,241 519,241 519,241 519,241