Net Income Per Share of Class A Common Stock - Schedule of 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		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
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	566,311		898,124
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	54,762	151,707	53,294	153,243
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	15,951,175	15,498,371	15,972,444	15,012,188