Dispositions of Hotel Properties (Narrative) (Details) $ in Thousands	3 Months Ended			9 Months Ended
	Sep. 30, 2019 property	Sep. 30, 2018 USD ($) property	Mar. 31, 2018 USD ($) property	Sep. 30, 2019 USD ($) property	Sep. 30, 2018 USD ($) property	Dec. 31, 2018 property
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of hotels	15			15
Number of properties sold	0	1		1	4
Net gain on sale of properties | $				$ 62	$ 5,706
Held For Sale [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of hotels	0			0		1
Continuing Operations [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net gain on sale of properties | $		$ 3,722
Impairment Recovery [Member] | Sold [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of impaired properties			1		1
Impairment recovery, Sold hotels | $			$ 93		$ 93