Notes Payable (Details) (USD $)	9 Months Ended			9 Months Ended	12 Months Ended	9 Months Ended	12 Months Ended	1 Months Ended			9 Months Ended	12 Months Ended	1 Months Ended	3 Months Ended	9 Months Ended			1 Months Ended					0 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012	Sep. 30, 2013 Notes payable maturing at dates ranging from May 2015 through May 2021 item	Dec. 31, 2012 Notes payable maturing at dates ranging from May 2015 through May 2021 item	Sep. 30, 2013 Entity that owns the Hilton San Diego Bayfront Mortgage Payable item	Dec. 31, 2012 Entity that owns the Hilton San Diego Bayfront Mortgage Payable item	Jan. 31, 2013 Senior Notes maturing in July 2027	Feb. 29, 2012 Senior Notes maturing in July 2027	Dec. 31, 2012 Senior Notes maturing in July 2027	Sep. 30, 2013 Doubletree Guest Suites Times Square Mortgage Payable item	Dec. 31, 2012 Doubletree Guest Suites Times Square Mortgage Payable item	Sep. 30, 2012 Senior unsecured revolving credit facility	Sep. 30, 2012 Senior unsecured revolving credit facility	Sep. 30, 2012 Senior unsecured revolving credit facility	Sep. 30, 2012 Senior unsecured revolving credit facility Minimum	Sep. 30, 2012 Senior unsecured revolving credit facility Maximum	Apr. 30, 2012 Renaissance Long Beach	Jan. 31, 2013 Kahler Grand	Jan. 31, 2013 Commercial laundry facility	Aug. 31, 2012 Marriott Del Mar	Sep. 30, 2012 Portfolio sale item	Jul. 02, 2013 Non-recourse loan secured Boston Park Plaza
Notes payable:
Total notes payable	$ 1,410,357,000		$ 1,363,392,000	$ 998,069,000	$ 890,668,000	$ 232,288,000	$ 234,724,000			$ 58,000,000	$ 180,000,000	$ 180,000,000
Less: discount on Senior Notes			(3,000)
Total notes payable, net	1,410,357,000		1,363,389,000
Less: current portion	(23,351,000)		(76,723,000)
Notes payable, less current portion	1,387,006,000		1,286,666,000
Fixed interest rate, low end of range (as a percent)				4.40%	4.40%
Fixed interest rate, high end of range (as a percent)				6.60%	6.60%
Number of hotels provided as collateral				14	13	1	1				1	1										3
Interest rate, description of reference rate						3-Month LIBOR	3-Month LIBOR				3-Month LIBOR	3-Month LIBOR	LIBOR
Interest rate added to base rate (as a percent)						3.25%	3.25%				3.25%	3.25%				1.75%	3.50%
Fixed interest rate (as a percent)										4.60%													4.40%
Repurchase of senior notes								42,000,000
Redemption of senior notes								16,000,000
Aggregate principal amount of debt repurchased or redeemed								58,000,000	4,500,000
Total cost to extinguish debt		(122,622,000)																			47,100,000	75,600,000
Repayment of mortgage debt																		32,200,000	26,700,000	400,000
Total cost to extinguish debt																			29,800,000
Aggregate principal amount of debt repurchased, plus accrued interest and related costs									4,570,000
Write-off of deferred financing fees									47,000									3,000			48,000	100,000
Write-off of Senior Notes discount									100,000
Loss on extinguishment of debt	44,000	191,000							200,000										3,100,000
Debt assumed at acquisition																							119,200,000
Maximum borrowing capacity of credit facility													150,000,000	150,000,000	150,000,000
Interest rate floor on base rate eliminated (as a percent)													1.00%	1.00%	1.00%
Extended maturity period															2 years
Interest rate added to base rate before amendment (as a percent)																3.25%	4.25%
Maximum borrowing capacity of credit facility with lender approval													350,000,000	350,000,000	350,000,000
Financing costs incurred and paid	$ 243,000	$ 1,320,000												$ 1,300,000	$ 1,300,000