Supplemental Information to Statements of Cash Flows (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Dividends Payable [Line Items]
Interest paid, net of capitalized interest	$ 38,128	$ 26,945	$ 23,528
Interest capitalized	598	0	206
Income taxes paid	2,487	3,049	1,572
Distributions payable on shares/units	29,869	23,293
Issuance of common shares for Board of Trustees compensation	372	421	207
Mortgage loans assumed in connection with acquisition	0	50,725	90,448
Below (above) market rate contracts assumed in connection with acquisition	20,110	15,375	2,826
Capital lease obligation assumed in connection with acquisition	0	10,758	0
Deposit Applied To Purchase Price Of Acquisition	0	0	4,000
Accrued additions and improvements to hotel properties	1,262	6,537	603
Write-off of fully depreciated furniture, fixtures and equipment	6,013	4,446	0
Write-off of deferred financing costs	$ 1,577	$ 2,258	$ 0
Long Term Incentive Partnership Units Converted To Common Units	0	258,101	0
Common Shares [Member]
Dividends Payable [Line Items]
Distributions payable on shares/units	$ 24,319	$ 17,743	$ 10,592
Preferred Shares [Member]
Dividends Payable [Line Items]
Distributions payable on shares/units	$ 5,550	$ 5,550	$ 5,203