Summary of Significant Accounting Policies - Narrative (Details) (USD $)	12 Months Ended
	Dec. 31, 2012 segment	Dec. 31, 2011	Dec. 31, 2010
Accounting Policies [Abstract]
Term for sale to be probable once buyer completed due diligence review of asset	12 months
Maximum term of investments to be considered cash equivalents	3 months
Percentage of nearly all revenue composed of hotel operating revenue	100.00%
Foreign currency translation	$ 26,039,000	$ 25,738,000
Capitalized costs	$ 22,200,000	$ 8,500,000	$ 5,800,000
Number of reportable segments (in segment)	1