Favorable Lease Assets (Details) (USD $)	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 07, 2012	Sep. 09, 2011	Sep. 07, 2012	Sep. 09, 2011	Dec. 31, 2011
Indefinite-lived Intangible Assets by Major Class [Line Items]
Favorable lease assets, net	$ 40,746,000		$ 40,746,000		$ 43,285,000
Favorable Lease Assets (Textuals) [Abstract]
Finite-lived intangible assets, amortization expense			700,000
Impairment of favorable lease asset					0
Asset Impairment Charges	30,376,000	0	30,844,000	0
Boston Westin Waterfront Ground Lease [Member]
Indefinite-lived Intangible Assets by Major Class [Line Items]
Carrying amount of the lease right	18,792,000		18,792,000		18,941,000
Boston Westin Waterfront Lease Right [Member]
Indefinite-lived Intangible Assets by Major Class [Line Items]
Nonamortizable intangible asset	9,045,000		9,045,000		9,513,000
Favorable Lease Assets (Textuals) [Abstract]
Impairment of favorable lease asset			500,000
Boston Westin Waterfront Lease Right [Member] | Minimum [Member]
Favorable Lease Assets (Textuals) [Abstract]
Number of room hotel for development for which favorable lease assets are owned (in rooms)	320		320
Boston Westin Waterfront Lease Right [Member] | Maximum [Member]
Favorable Lease Assets (Textuals) [Abstract]
Number of room hotel for development for which favorable lease assets are owned (in rooms)	350		350
Minneapolis Hilton Ground Lease [Member]
Indefinite-lived Intangible Assets by Major Class [Line Items]
Carrying amount of the lease right	5,933,000		5,933,000		5,985,000
Oak Brook Hills Marriot Resort Ground Lease [Member]
Indefinite-lived Intangible Assets by Major Class [Line Items]
Carrying amount of the lease right	5,600,000		5,600,000		7,352,000
Favorable Lease Assets (Textuals) [Abstract]
Impairment of favorable lease asset	1,400,000
Lexington Hotel New York Tenant Leases[Member]
Indefinite-lived Intangible Assets by Major Class [Line Items]
Carrying amount of the lease right	$ 1,376,000		$ 1,376,000		$ 1,494,000