Basis of Presentation - Acquisitions and Investments - Additional Information (Detail) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2016 USD ($)	Dec. 31, 2014 USD ($) a Room	Dec. 31, 2015 USD ($)
Business Acquisition [Line Items]
Total Debt	$ 1,480,921		$ 1,431,710
AC Hotel Note Payable [Member]
Business Acquisition [Line Items]
Total Debt		$ 6,000	$ 6,000
Aloft Hotel National Harbor [Member]
Business Acquisition [Line Items]
Number of room purchased | Room		192
Purchase price of hotel		$ 21,800
Purchase of additional land | a		0.5
Purchase price paid		$ 21,200
Hotel opened date	2015-04