Equity-Based Compensation - Issued And Unvested Shares Of Restricted Stock Granted (Detail)	Mar. 31, 2016 shares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of shares unvested (in shares)	479,656
Restricted Stock, Time Vested
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of shares unvested (in shares)	2,668,975
Restricted Stock, Time Vested | First Vesting
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of shares unvested (in shares)	1,335,700
Restricted Stock, Time Vested | Second Vesting
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of shares unvested (in shares)	419,283
Restricted Stock, Time Vested | Third Vesting
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of shares unvested (in shares)	913,992