Subsequent Events (Details) $ in Millions							6 Months Ended	9 Months Ended	12 Months Ended
	Oct. 30, 2015 USD ($) property	Oct. 29, 2015 USD ($)	Sep. 30, 2015 USD ($) property	May. 01, 2015 USD ($)	Apr. 02, 2015	Apr. 02, 2014	Sep. 30, 2015 USD ($) property	Sep. 30, 2015 USD ($) property	Dec. 31, 2014
Subsequent Events
Number of unencumbered hotels | property			18				18	18
Senior corporate credit facility
Subsequent Events
Amount available under the term loan supplement agreement			$ 85.0				$ 85.0	$ 85.0
Interest rate, description of reference rate			LIBOR		LIBOR
Notes maturing in May 2015
Subsequent Events
Repayment of mortgage debt				$ 99.1
Doubletree Guest Suites Times Square Mortgage Payable
Subsequent Events
Interest rate added to base rate (as a percent)								3.25%	3.25%
Interest rate, description of reference rate								one-month LIBOR	one-month LIBOR
Minimum | Senior corporate credit facility
Subsequent Events
Interest rate added to base rate (as a percent)						1.55%	1.55%
Maximum | Senior corporate credit facility
Subsequent Events
Interest rate added to base rate (as a percent)						2.30%	2.30%
Subsequent Event
Subsequent Events
Number of unencumbered hotels | property	19
Subsequent Event | Unsecured term loan
Subsequent Events
New mortgage loan		$ 85.0
Interest rate, description of reference rate		LIBOR
Subsequent Event | Renaissance Harborplace Mortgage Payable
Subsequent Events
Repayment of mortgage debt	$ 85.9
Subsequent Event | Minimum | Unsecured term loan
Subsequent Events
Interest rate added to base rate (as a percent)		1.80%
Subsequent Event | Maximum | Unsecured term loan
Subsequent Events
Interest rate added to base rate (as a percent)		2.25%
Interest Rate Swap Agreement | Subsequent Event | Unsecured term loan
Subsequent Events
Fixed rate under interest rate swap agreement		1.591%
Variable rate under interest rate swap agreement		3.39%