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Earnings Per Share (Details) - shares
3 Months Ended
Mar. 31, 2017
Mar. 31, 2016
Stock options    
Earnings Per Share [Line Items]    
Antidilutive securities (in shares) 926,898 584,375
Restricted stock units (RSUs)    
Earnings Per Share [Line Items]    
Antidilutive securities (in shares) 797,401 343,753
Warrants | Private placement    
Earnings Per Share [Line Items]    
Antidilutive securities (in shares) 6,160,000 6,160,000
Warrants | Public    
Earnings Per Share [Line Items]    
Antidilutive securities (in shares) 9,823,072 9,823,072
Director | Restricted stock to non-directors    
Earnings Per Share [Line Items]    
Antidilutive securities (in shares) 78,754 21,784