Earnings Per Share - Summary of Basic and Diluted Earnings Per Share (Parenthetical) (Detail)	3 Months Ended
	Mar. 31, 2014
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Weighted average shares outstanding-diluted	36,889,474
Options to purchase Class A common stock [Member]
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	231
Operating Partnership Awards Outstanding [Member]
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Weighted average shares outstanding-diluted	7,873