Net Gains (Losses) on Sales of Properties and Discontinued Operations (Narrative) (Details) (USD $) In Thousands, unless otherwise specified	0 Months Ended	3 Months Ended	12 Months Ended
	Jan. 02, 2014	Mar. 31, 2014	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Hotel Dispositions [Abstract]
Number of hotels held for sale	19		12
Number of hotels sold			13	17	15
Aggregate net gain on sale of hotels			$ 2,749	$ 1,853	$ 7,842
Gain (losses) on sale of property			2,758	1,892	7,872
Interest expense allocated to discontinued operations			$ 1,237	$ 2,878	$ 4,815
Additional number of hotels classified as held for sale			7
Number of hotels reclassified as held for use		1	1