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Stock-based Compensation (Details 1) - Employee Stock Option [Member] - USD ($)
 9 Months Ended 12 Months Ended
Sep. 30, 2017
Dec. 31, 2016
Schedule Of Share Based Compensation Stock Options Activity [Line Items]    
Stock Options, Outstanding Beginning balance 625,000  
Stock Options, Granted 19,000  
Stock Options, Exercised (4,000)  
Stock Options, Forfeited (23,000)  
Stock Options, Outstanding Ending balance 617,000 625,000
Stock Options, Exercisable 300,000  
Grant Date Weighted-Average Exercise Price, Beginning balance $ 2.85  
Grant Date Weighted-Average Exercise Price, Granted 3.62  
Grant Date Weighted-Average Exercise Price, Exercised 2.81  
Grant Date Weighted-Average Exercise Price, Forfeited 2.82  
Grant Date Weighted-Average Exercise Price, Ending balance 2.87 $ 2.85
Grant Date Weighted Average Exercise Price, Exercisable $ 2.82  
Weighted Average Remaining Contractual Life (Years), Balance 3 years 7 months 17 days 4 years 3 months
Weighted Average Remaining Contractual Life (Years), Granted 6 years 9 months 18 days  
Weighted Average Remaining Contractual Life (Years), Exercisable 3 years 5 months 5 days  
Intrinsic Value, Outstanding Beginning balance $ 0  
Intrinsic Value, Outstanding Ending balance 0 $ 0
Intrinsic Value, Exercisable at September 30, 2017 $ 9,000