Gain Resulted From Change of Control in Equity Method Investment (Detail) - USD ($) $ in Thousands	1 Months Ended	12 Months Ended
	Aug. 31, 2014	Dec. 31, 2014	Dec. 31, 2016	Dec. 31, 2015
Schedule of Equity Method Investments [Line Items]
Fair value of net assets acquired			$ 28,588	$ 873,321
Less: Cash paid to acquire co-venture partner's interest		$ (1,584)
Gain on purchase of controlling interest of investment in unconsolidated entity		2,798
Montecito Joint Venture
Schedule of Equity Method Investments [Line Items]
Fair value of net assets acquired	$ 10,129	10,129
Less: Previous investment in Montecito Joint Venture		(5,747)
Less: Cash paid to acquire co-venture partner's interest	(1,600)	(1,584)
Gain on purchase of controlling interest of investment in unconsolidated entity	$ 2,800	$ 2,798