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Stockholders' Equity (Details 1) - Employee Stock Option [Member]
12 Months Ended
Dec. 31, 2016
$ / shares
shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Range of Exercise Prices (in dollars per share) $ 8.14
Range of Exercise Prices, Lower Range Limit (in dollars per share) 7.77
Range of Exercise Prices, Upper Range Limit (in dollars per share) $ 9.24
Number Options Outstanding | shares 236,844
Options Outstanding, Weighted Avg. Remaining Life (in years) 1 year 8 months 5 days
Options Outstanding, Weighted Avg. Exercise Price (in dollars per share) $ 8.14
Number Options Exercisable | shares 55,066
Options Exercisable, Weighted Avg. Remaining Life (in years) 5 months 5 days
Options Exercisable, Weighted Avg. Exercise Price (in dollars per share) $ 8.54
Exercise Price Range One [Member]  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Range of Exercise Prices (in dollars per share) $ 7.77
Number Options Outstanding | shares 114,282
Options Outstanding, Weighted Avg. Remaining Life (in years) 3 years 2 months 1 day
Options Outstanding, Weighted Avg. Exercise Price (in dollars per share) $ 7.77
Number Options Exercisable | shares 6,856
Options Exercisable, Weighted Avg. Remaining Life (in years) 3 years 2 months 1 day
Options Exercisable, Weighted Avg. Exercise Price (in dollars per share) $ 7.77
Exercise Price Range Two [Member]  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Range of Exercise Prices (in dollars per share) $ 8.19
Number Options Outstanding | shares 26,142
Options Outstanding, Weighted Avg. Remaining Life (in years) 1 year 2 months 1 day
Options Outstanding, Weighted Avg. Exercise Price (in dollars per share) $ 8.19
Number Options Exercisable | shares 0
Options Exercisable, Weighted Avg. Remaining Life (in years) 0 years
Options Exercisable, Weighted Avg. Exercise Price (in dollars per share) $ 0
Exercise Price Range Three [Member]  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Range of Exercise Prices (in dollars per share) 8.57
Range of Exercise Prices, Lower Range Limit (in dollars per share) 8.40
Range of Exercise Prices, Upper Range Limit (in dollars per share) $ 9.24
Number Options Outstanding | shares 96,420
Options Outstanding, Weighted Avg. Remaining Life (in years) 14 days
Options Outstanding, Weighted Avg. Exercise Price (in dollars per share) $ 8.57
Number Options Exercisable | shares 48,210
Options Exercisable, Weighted Avg. Remaining Life (in years) 14 days
Options Exercisable, Weighted Avg. Exercise Price (in dollars per share) $ 8.65