Fair Value Measurements and Derivative Instruments (Schedule of Impairment and Recovery of Previously Recorded Impairment) (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2018 USD ($) property	Mar. 31, 2017 USD ($) property
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Number of hotels | property	1	3
Impairment (loss) recovery, Total net impairments | $	$ 93	$ (271)
Sold [Member] | Impairment Loss [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Number of hotels | property		1
Impairment (loss) recovery, Held for sale hotels | $		$ (351)
Sold [Member] | Impairment Recovery [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Number of hotels | property	1	2
Impairment (loss) recovery, Sold hotels | $	$ 93	$ 80