Annual report pursuant to Section 13 and 15(d)

Stock-Based Compensation - Schedule of Black-Scholes-Merton Option Pricing Model (Details)

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Stock-Based Compensation - Schedule of Black-Scholes-Merton Option Pricing Model (Details)
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Employee Stock Option [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Weighted-average risk-free interest rate 1.64% 1.85%
Weighted-average expected life (in years) 6 years 3 months 18 days 6 years 3 months 18 days
Expected dividend yield 0.00% 0.00%
Weighted-average expected volatility 48.00% 47.00%
Stock Options to Non-employees [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Weighted-average risk-free interest rate 2.52%  
Weighted-average expected life (in years) 9 years 8 months 12 days  
Expected dividend yield 0.00%  
Weighted-average expected volatility 44.00%