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Stockholders' Equity (Deficit) (Details 1) - Equity Incentive 2011 Plan [Member] - $ / shares
 12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested, Number of Shares [Roll Forward]      
Common shares, nonvested beginning of period 372,092 290,457  
Common shares, granted 277,059 217,952  
Common shares, vested (147,759) (128,342)  
Common shares, forfeited (39,466) (7,975)  
Common shares, nonvested end of period 461,926 372,092 290,457
Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested, Weighted Average Grant Date Fair Value [Roll Forward]      
Weighted average grant date fair value, nonvested beginning of period $ 4.00 $ 4.88  
Weighted average grant date fair value, granted 7.43 7.60  
Weighted average grant date fair value, vested 4.32 4.56  
Weighted average grant date fair value, forfeited 3.44 4.16  
Weighted average grant date fair value, nonvested end of period $ 3.12 $ 4.00 $ 4.88
Weighted average remaining years to vest 2 years 9 months 3 years 3 years 4 months