Discontinued Operations (Details) (USD $)	1 Months Ended	12 Months Ended			1 Months Ended		3 Months Ended	1 Months Ended
	Jan. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012 item	Dec. 31, 2014	May 31, 2014	Jun. 30, 2014	Aug. 31, 2012	Sep. 30, 2012 item
Discontinued Operations
Number of hotels and/or other assets sold				4
Gain (loss) on sale		$ 5,199,000	$ 51,620,000	$ 38,292,000
Deferred gain on sale of asset		7,000,000	14,000,000		7,000,000
Amount of mortgage extinguished				(122,622,000)
Loss on extinguishment of debt		4,638,000	44,000	191,000
Accumulated other comprehensive loss
Beginning balance of accumulated other comprehensive loss	(5,335,000)		(5,335,000)
Pension liability reclassification	5,335,000		5,335,000
Ending balance of accumulated other comprehensive loss				(5,335,000)
Certain Hotels Sold During 2004, 2005, 2010 and 2013 | Insurance-related Assessments [Member]
Discontinued Operations
Settlement costs accrued during the period					400,000
Rochester Portfolio
Discontinued Operations
Number of hotels and/or other assets sold	4
Number of rooms sold	1,222
Net proceeds received from sale of hotel properties and other assets	195,600,000
Cash proceeds held by accommodator	145,700,000
Gain (loss) on sale	51,600,000					7,000,000
Deferred gain on sale of asset	3,700,000
Working cash advance provided to buyer	3,700,000
Carrying value of asset net of deferred gain		0	0		0
Total liability related to pension plan	14,000,000
Rochester Portfolio | Preferred equity investment
Discontinued Operations
Preferred equity investment	25,000,000
Dividend yield on preferred equity investment (as a percent)	11.00%
Deferred gain on sale of asset	25,000,000
Dividends on the preferred equity investment		2,800,000	2,600,000
Carrying value of asset net of deferred gain		0	0		0
Rochester Portfolio | Indemnification Agreement [Member]
Discontinued Operations
Settlement costs accrued during the period	300,000						1,800,000
Number of hotels for which potential future costs for certain capital expenditures exist	1	1					1
Estimated liability, minimum							2,000,000
Estimated liability, maximum							3,000,000
Total amount accrued for contingency							2,100,000
Loss contingency payment		1,300,000
Balance of accrued settlement costs		800,000			800,000
Rochester Portfolio | Retirement plans
Discontinued Operations
Deferred gain on sale of asset	14,000,000	7,000,000			7,000,000
Total liability related to pension plan	14,000,000	7,000,000	14,000,000		7,000,000
Reduction in pension plan liability						7,000,000
Kahler Grand
Discontinued Operations
Number of rooms sold	660
Repayment of mortgage debt	26,700,000
Total cost to extinguish debt	29,800,000
Loss on extinguishment of debt	3,100,000
Commercial laundry facility
Discontinued Operations
Repayment of mortgage debt	400,000
Kahler Inn & Suites
Discontinued Operations
Number of rooms sold	271
Marriott Rochester
Discontinued Operations
Number of rooms sold	202
Residence Inn by Marriott Rochester
Discontinued Operations
Number of rooms sold	89
Marriott Del Mar
Discontinued Operations
Net proceeds received from sale of hotel properties and other assets								17,700,000
Gain (loss) on sale								25,500,000
Amount of mortgage extinguished								47,100,000
Write-off of deferred financing fees								48,000
Portfolio sale
Discontinued Operations
Net proceeds received from sale of hotel properties and other assets									28,600,000
Gain (loss) on sale									12,700,000
Amount of mortgage extinguished									75,600,000
Write-off of deferred financing fees									100,000
Discontinued Operations
Deferred incentive management fees liability assumed by buyer of hotel									2,200,000
Number of separate mortgages									3
Maximum | Rochester Portfolio | Retirement plans
Discontinued Operations
Total liability related to pension plan	$ 14,000,000