Net Income Per Share of Class A Common Stock - Anti-Dilutive Securities Excluded from Calculation of Net Income Per Share of Class A Common Stock (Details) - Class A Common Stock - shares	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Weighted-Average Unvested RSUs
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Anti-dilutive securities excluded from the calculation of net income per share	3,260,169	1,186,918
Weighted-Average Participating RSUs
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Anti-dilutive securities excluded from the calculation of net income per share	575,275	789,924
Weighted-Average Partnership Units
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Anti-dilutive securities excluded from the calculation of net income per share	15,507,475	16,123,221