Dispositions Of Hotel Properties And Discontinued Operations (Narrative) (Details) $ in Thousands		3 Months Ended								12 Months Ended
	Jul. 13, 2015 USD ($) property	Dec. 31, 2017 USD ($) property	Sep. 30, 2017 USD ($)	Jun. 30, 2017 USD ($)	Mar. 31, 2017 USD ($)	Dec. 31, 2016 USD ($) property	Sep. 30, 2016 USD ($)	Jun. 30, 2016 USD ($)	Mar. 31, 2016 USD ($)	Dec. 31, 2017 USD ($) property	Dec. 31, 2016 USD ($) property	Dec. 31, 2015 USD ($) property	Jan. 01, 2017 property
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of hotels | property		18								18
Number of hotels reclassified as held for sale that represent a strategic shift | property										0
Net gain on disposition of assets		$ 2,004	$ (46)	$ 4,852	$ (3)	$ 7,318	$ 3,591	$ 8,856	$ 3,367	$ 6,807	$ 23,132	$ 4,798
Net income (loss)		1,338	(1,032)	4,925	(2,350)	4,540	2,792	8,165	7,298	2,881	22,795	13,125
Net earnings (loss) attributable to controlling interests		$ 10	$ (7)	$ 67	$ (50)	$ 99	$ 61	$ 178	$ 389	$ 20	$ 727	$ 1,197
Sold [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of hotels | property		8				25				8	25	17
Net gain on disposition of assets										$ 7,049	$ 24,256	$ 7,759
Held For Sale [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of hotels | property		3								3			7
Number of hotels reclassified as held for sale | property										4
Alexandria Comfort Inn And Days Inn [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net income (loss)												(665)
Impairment expense												1,020
Net earnings (loss) attributable to controlling interests												(3)
Alexandria, Virginia [Member] | Sold [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of hotels | property	2
Net gain on disposition of assets	$ 19,000
Continuing Operations [Member] | Sold [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net gain on disposition of assets										$ 7,049	$ 23,575	$ 4,996