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Stock-Based Compensation (Details) - USD ($)
$ / shares in Units, $ in Millions
1 Months Ended
Jul. 31, 2015
Jan. 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Option granted to purchase shares of its common stock, Exercise price one   607,995
Granted option share purchase price, per share Exercise price one   $ 22.01
Grant date fair value, Option grants during period   $ 8.4
Minimum    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Vesting period of shares   3 years
Restricted Stock    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Restricted stock grants during period   113,289
Subsequent Event | Restricted Stock    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Restricted stock grants during period 182,250  
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value $ 4,100,000