Supplemental Information to Statements of Cash Flows (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Summary of Supplemental Information to Statements of Cash Flows
Interest Paid, net of capitalized interest	$ 13,440	$ 11,366	$ 956
Interest Capitalized	236	0	0
Income Taxes Paid	1,877	586	0
Cash Flow, Noncash Investing and Financing Activities Disclosure [Abstract]
Distributions payable on shares/units	11,274	10,032
Issuance of common shares for board of trustees compensation	199	182	12
Mortgage loan assumed in connection with acquisition	27,175	42,000	91,070
Over market rate contracts	9,170	0	0
Deposit applied to purchase price of acquisition	0	5,000	0
Accrued additions and improvements to hotel properties	1,203	2,171	0
Common Shares [Member]
Cash Flow, Noncash Investing and Financing Activities Disclosure [Abstract]
Distributions payable on shares/units	7,461	6,219	4,908
Preferred Shares [Member]
Cash Flow, Noncash Investing and Financing Activities Disclosure [Abstract]
Distributions payable on shares/units	$ 3,813	$ 3,813	$ 0