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Stock-Based Compensation (Details) - $ / shares
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Summary of options outstanding by exercise price range      
Options Exercisable, Weighted Average Exercise Price $ 0.67 $ 1.24 $ 3.14
Stock Options [Member]      
Summary of options outstanding by exercise price range      
Options Outstanding, Number Outstanding at 12/31/16 1,846,000    
Options Outstanding, Weighted Average Remaining Contractual Life (years) 3 years 11 days    
Options Outstanding, Weighted Average Exercise Price $ 4.39    
Options Exercisable, Number Exercisable at 12/31/16 1,792,249    
Options Exercisable, Weighted Average Exercise Price $ 4.43    
Stock Options [Member] | Range one [Member]      
Summary of options outstanding by exercise price range      
Range of Exercise Price, Lower Range Limit 1.44    
Range of Exercise Price, Upper Range Limit $ 3.50    
Options Outstanding, Number Outstanding at 12/31/16 200,000    
Options Outstanding, Weighted Average Remaining Contractual Life (years) 5 years 3 months 18 days    
Options Outstanding, Weighted Average Exercise Price $ 2.85    
Options Exercisable, Number Exercisable at 12/31/16 147,083    
Options Exercisable, Weighted Average Exercise Price $ 2.78    
Stock Options [Member] | Range two [Member]      
Summary of options outstanding by exercise price range      
Range of Exercise Price, Lower Range Limit 3.51    
Range of Exercise Price, Upper Range Limit $ 5.00    
Options Outstanding, Number Outstanding at 12/31/16 1,426,000    
Options Outstanding, Weighted Average Remaining Contractual Life (years) 2 years 10 months 6 days    
Options Outstanding, Weighted Average Exercise Price $ 4.23    
Options Exercisable, Number Exercisable at 12/31/16 1,426,000    
Options Exercisable, Weighted Average Exercise Price $ 4.23    
Stock Options [Member] | Range three [Member]      
Summary of options outstanding by exercise price range      
Range of Exercise Price, Lower Range Limit 5.01    
Range of Exercise Price, Upper Range Limit $ 6.50    
Options Outstanding, Number Outstanding at 12/31/16 130,000    
Options Outstanding, Weighted Average Remaining Contractual Life (years) 3 years 7 months 17 days    
Options Outstanding, Weighted Average Exercise Price $ 5.98    
Options Exercisable, Number Exercisable at 12/31/16 129,166    
Options Exercisable, Weighted Average Exercise Price $ 5.98    
Stock Options [Member] | Range four [Member]      
Summary of options outstanding by exercise price range      
Range of Exercise Price, Lower Range Limit 6.51    
Range of Exercise Price, Upper Range Limit $ 8.21    
Options Outstanding, Number Outstanding at 12/31/16 90,000    
Options Outstanding, Weighted Average Remaining Contractual Life (years) 7 days    
Options Outstanding, Weighted Average Exercise Price $ 8.21    
Options Exercisable, Number Exercisable at 12/31/16 90,000    
Options Exercisable, Weighted Average Exercise Price $ 8.21