Fees in Connection with Offering (Detail) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2015	Dec. 31, 2014
Related Party Transactions [Abstract]
Selling commissions	[1]	$ 12,507	$ 18,387
Marketing support fees	[1]	16,242	16,429
Total offering expenses		$ 28,749	$ 34,816

[1] Amounts are recorded as stock issuance and offering costs in the accompanying consolidated statements of stockholders’ equity and redeemable noncontrolling interest. Amounts include approximately $25,000 and $30,000 of reimbursement payments to the Advisor for services provided to the Company by its executive officers for the year ended December 31, 2015 and 2014, respectively. The reimbursement payments include components of salaries, benefits and other overhead charges.