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Stock-Based Compensation - Additional Information (Details) - USD ($)
3 Months Ended 9 Months Ended
Sep. 30, 2016
Sep. 30, 2015
Sep. 30, 2016
Sep. 30, 2015
Dec. 31, 2014
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]          
Stock-based compensation expense recognized $ 1,328,000   $ 1,889,000    
Restricted Stock Units [Member]          
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]          
Number of shares of common stock that each holder has contingent right to receive upon vesting     1    
Unrecognized compensation expense related to unvested stock $ 7,800,000   $ 7,800,000    
Unrecognized compensation expense related to unvested stock to be recognized over weighted-average period     1 year 4 months 24 days    
2014 Long Term Incentive Plan [Member]          
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]          
Maximum number of shares available to issue         1,500,000
Common stock remained available for issuance 727,500   727,500    
2014 Long Term Incentive Plan [Member] | Restricted Stock Units [Member]          
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]          
Shares granted     772,500    
Shares granted, Weighted average grant date fair value     $ 12.55    
Description of vesting shares     The RSUs vest over a 19 or 34 month period with one-third of the award vesting at the end of either seven or 10 months and the remaining two-thirds vesting monthly thereafter.    
Unvested shares 772,500   772,500    
Stock-based compensation expense recognized $ 1,300,000 $ 0 $ 1,900,000 $ 0  
2014 Long Term Incentive Plan [Member] | Restricted Stock Units [Member] | Maximum [Member]          
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]          
Vesting period     34 months    
2014 Long Term Incentive Plan [Member] | Restricted Stock Units [Member] | Maximum [Member] | Tranche 1 [Member]          
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]          
Vesting period     10 months    
2014 Long Term Incentive Plan [Member] | Restricted Stock Units [Member] | Minimum [Member]          
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]          
Vesting period     19 months    
2014 Long Term Incentive Plan [Member] | Restricted Stock Units [Member] | Minimum [Member] | Tranche 1 [Member]          
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]          
Vesting period     7 months