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Equity-Based Compensation - Restricted Stock Activity (Details) - Restricted Stock
12 Months Ended
Dec. 31, 2015
$ / shares
shares
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]  
Unvested, December 31, 2013 (shares) | shares 380,750
Granted (shares) | shares 507,131
Vested (shares) | shares (91,127)
Forfeited (shares) | shares (120,701)
Unvested, December 31, 2014 (shares) | shares 676,053
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]  
Unvested, December 31, 2013 (in dollars per share) | $ / shares $ 26.55
Granted (in dollars per share) | $ / shares 27.46
Vested (in dollars per share) | $ / shares 27.14
Forfeited (in dollars per share) | $ / shares 23.86
Unvested, December 31, 2014 (in dollars per share) | $ / shares $ 27.63