Acquisition of Hotel Properties (Narrative) (Details) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2018 USD ($)	Sep. 30, 2018 USD ($)	Jun. 30, 2018 USD ($)	Mar. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)	Sep. 30, 2017 USD ($)	Jun. 30, 2017 USD ($)	Mar. 31, 2017 USD ($)	Dec. 31, 2018 USD ($) property	Dec. 31, 2017 USD ($) property	Dec. 31, 2016 USD ($) property
Business Acquisition [Line Items]
Number of wholly owned properties acquired | property									2	7
Revenue	$ 15,082	$ 15,462	$ 17,834	$ 16,679	$ 15,278	$ 15,562	$ 14,252	$ 10,361	$ 65,057	$ 55,453	$ 50,647
Net income (loss)	$ (965)	$ 2,658	$ 2,886	$ 786	$ 1,338	$ (1,032)	$ 4,925	$ (2,350)	5,365	2,881	$ 22,795
Wholly Owned Properties Acquired [Member]
Business Acquisition [Line Items]
Revenue									7,071	17,455
Net income (loss)									$ 1,610	$ 4,508
Leawood, Kansas [Member] | Aloft Hotel [Member]
Business Acquisition [Line Items]
Number of wholly owned properties acquired | property											1
Revenue											$ 222
Net income (loss)											$ 1