Sale of Hotel Properties (Schedule of Properties Disposed) (Details) $ in Thousands			1 Months Ended	3 Months Ended		6 Months Ended
	Jun. 27, 2019 USD ($) hotel	Jun. 25, 2019 USD ($) hotel	Aug. 31, 2019 USD ($) hotel	Jun. 30, 2020 USD ($)	Jun. 30, 2019 USD ($) room	Jun. 30, 2020 USD ($)	Jun. 30, 2019 USD ($) room hotel
Discontinued operations
Proceeds from the sale of hotel properties, net | $						$ 94	$ 447,493
Gain (loss) on sale of hotel properties, net | $				$ (8)	$ (24,835)	$ 94	(24,835)
Disposals 2019 [Member]
Discontinued operations
Proceeds from the sale of hotel properties, net | $	$ 153,300	$ 311,900					$ 465,300
Property disposed, number of rooms					3,195		3,195
Disposal Group, Number of Properties Disposed During Period | hotel	2	21	18				23
Gain (Loss) on Disposition of Assets | $	$ 21,300	$ 44,500	$ 24,800				$ 48,100
Courtyard Boulder Longmont [Member]
Discontinued operations
Property disposed, number of rooms					78		78
Courtyard Salt Lake City Airport [Member]
Discontinued operations
Property disposed, number of rooms					154		154
Courtyard Fort Lauderdale SW Maramar [Member]
Discontinued operations
Property disposed, number of rooms					128		128
Courtyard Austin Airport [Member]
Discontinued operations
Property disposed, number of rooms					150		150
Fairfield Inn & Suites San Antonio Downtown [Member]
Discontinued operations
Property disposed, number of rooms					110		110
Hampton Inn & Suites Clearwater St. Petersburg [Member]
Discontinued operations
Property disposed, number of rooms					128		128
Hampton Inn Fort Walton Beach [Member]
Discontinued operations
Property disposed, number of rooms					100		100
Hampton Inn & Suites Denver Tech Center [Member]
Discontinued operations
Property disposed, number of rooms					123		123
Hampton Inn West Palm Beach Airport Central [Member]
Discontinued operations
Property disposed, number of rooms					105		105
Hilton Garden Inn Bloomington [Member]
Discontinued operations
Property disposed, number of rooms					168		168
Hilton Garden Inn West Palm Beach Airport [Member]
Discontinued operations
Property disposed, number of rooms					100		100
Hilton Garden Inn Durham Raleigh Research Triangle Park [Member]
Discontinued operations
Property disposed, number of rooms					177		177
Residence Inn Longmont Boulder [Member]
Discontinued operations
Property disposed, number of rooms					84		84
Residence Inn Detroit Novi [Member]
Discontinued operations
Property disposed, number of rooms					107		107
Residence Inn Chicago Oak Brook [Member]
Discontinued operations
Property disposed, number of rooms					156		156
Residence Inn Fort Lauderdale Plantation [Member]
Discontinued operations
Property disposed, number of rooms					138		138
Residence Inn Salt Lake City Airport [Member]
Discontinued operations
Property disposed, number of rooms					104		104
Residence Inn San Antonio Downtown Market Square [Member]
Discontinued operations
Property disposed, number of rooms					95		95
Residence Inn Fort Lauderdale SW Miramar [Member]
Discontinued operations
Property disposed, number of rooms					130		130
Residence Inn Silver Spring [Member]
Discontinued operations
Property disposed, number of rooms					130		130
Springhill Suites Boulder Longmont [Member]
Discontinued operations
Property disposed, number of rooms					90		90
Embassy Suites Myrtle Beach - Oceanfront Resort [Member]
Discontinued operations
Property disposed, number of rooms					255		255
Hilton Myrtle Beach Resort [Member]
Discontinued operations
Property disposed, number of rooms					385		385