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Share-Based Compensation Summary of Restricted Stock Awards (Details) - Restricted Stock Awards
9 Months Ended
Sep. 30, 2015
$ / shares
shares
Number of Shares (in thousands)  
Nonvested, December 31, 2014 (shares) | shares 0
Granted (shares) | shares 22,908
Vested (shares) | shares 0
Forfeited (shares) | shares 0
Nonvested, June 30, 2015 (shares) | shares 23,000
Weighted Average Grant Date Fair Value per Share  
Nonvested, December 31, 2014 (usd per share) $ 0.00
Granted (usd per share) 8.73
Vested (usd per share) 0.00
Forfeited (usd per share) 0.00
Nonvested, June 30, 2015 (usd per share) $ 8.73