Supplemental Information to Statements of Cash Flows (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Dividends Payable [Line Items]
Interest Paid	$ 5,096	$ 2,906
Interest Paid, Capitalized	206	0
Income Taxes Paid	400	232
Distributions payable on shares/units	13,984
Issuance of common shares for board of trustees compensation	207	199
Mortgage loan assumed in connection with acquisition	66,732	0
Above market rate contracts assumed in connection with acquisition	4,751	0
Deposit Applied To Purchase Price Of Acquisition	4,000	0
Accrued additions and improvements to hotel properties	1,229	2,493
Common Shares [Member]
Dividends Payable [Line Items]
Distributions payable on shares/units	9,960	6,393
Preferred Shares [Member]
Dividends Payable [Line Items]
Distributions payable on shares/units	$ 4,024	$ 3,813