Schedule III Real Estate and Accumulated Depreciation (Schedule of Real Estate Investments and Accumulated Depreciation) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Real Estate and Accumulated Depreciation [Line Items]
Initial cost, Land	$ 34,928
Initial cost, Buildings & Other	242,540
Initial cost, Furniture & equipment	20,750
Additions, (dispositions), and (impairments) Subsequent to acquisition, Buildings & Other	3,285
Additions, (dispositions), and (impairments) Subsequent to acquisition, Furniture & equipment	3,995
Gross amount at December 31, 2019, Land	34,928
Gross amount at December 31, 2019, Buildings & Other	245,825
Gross amount at December 31, 2019, Furniture & equipment	24,745
Accumulated depreciation	(39,729)	$ (28,877)	$ (22,929)	$ (21,548)
Net book value	265,769
Hotel Properties [Member]
Real Estate and Accumulated Depreciation [Line Items]
Initial cost, Land	34,928
Initial cost, Buildings & Other	242,540
Initial cost, Furniture & equipment	20,750
Additions, (dispositions), and (impairments) Subsequent to acquisition, Buildings & Other	3,285
Additions, (dispositions), and (impairments) Subsequent to acquisition, Furniture & equipment	3,520
Gross amount at December 31, 2019, Land	34,928
Gross amount at December 31, 2019, Buildings & Other	245,825
Gross amount at December 31, 2019, Furniture & equipment	24,270
Accumulated depreciation	(39,388)
Net book value	265,635
Construction-in-Progress [Member]
Real Estate and Accumulated Depreciation [Line Items]
Additions, (dispositions), and (impairments) Subsequent to acquisition, Furniture & equipment	123
Gross amount at December 31, 2019, Furniture & equipment	123
Net book value	123
Office Building [Member]
Real Estate and Accumulated Depreciation [Line Items]
Additions, (dispositions), and (impairments) Subsequent to acquisition, Furniture & equipment	352
Gross amount at December 31, 2019, Furniture & equipment	352
Accumulated depreciation	(341)
Net book value	$ 11
Hilton Garden Inn [Member] | Hotel Properties [Member] | Dowell, Maryland [Member]
Real Estate and Accumulated Depreciation [Line Items]
Acquisition date	May 25, 2012
Encumbrance	KEY
Initial cost, Land	$ 1,400
Initial cost, Buildings & Other	9,492
Initial cost, Furniture & equipment	323
Additions, (dispositions), and (impairments) Subsequent to acquisition, Buildings & Other	671
Additions, (dispositions), and (impairments) Subsequent to acquisition, Furniture & equipment	603
Gross amount at December 31, 2019, Land	1,400
Gross amount at December 31, 2019, Buildings & Other	10,163
Gross amount at December 31, 2019, Furniture & equipment	926
Accumulated depreciation	(3,045)
Net book value	$ 9,444
SpringHill Suites [Member] | Hotel Properties [Member] | San Antonio, Texas [Member]
Real Estate and Accumulated Depreciation [Line Items]
Acquisition date	Oct. 01, 2015
Encumbrance	WELLS
Initial cost, Land	$ 1,597
Initial cost, Buildings & Other	14,353
Initial cost, Furniture & equipment	1,550
Additions, (dispositions), and (impairments) Subsequent to acquisition, Buildings & Other	122
Additions, (dispositions), and (impairments) Subsequent to acquisition, Furniture & equipment	90
Gross amount at December 31, 2019, Land	1,597
Gross amount at December 31, 2019, Buildings & Other	14,475
Gross amount at December 31, 2019, Furniture & equipment	1,640
Accumulated depreciation	(3,342)
Net book value	$ 14,370
Courtyard by Mariott [Member] | Hotel Properties [Member] | Jacksonville, Florida [Member]
Real Estate and Accumulated Depreciation [Line Items]
Acquisition date	Oct. 02, 2015
Encumbrance	WELLS
Initial cost, Land	$ 2,100
Initial cost, Buildings & Other	11,050
Initial cost, Furniture & equipment	850
Additions, (dispositions), and (impairments) Subsequent to acquisition, Buildings & Other	336
Additions, (dispositions), and (impairments) Subsequent to acquisition, Furniture & equipment	243
Gross amount at December 31, 2019, Land	2,100
Gross amount at December 31, 2019, Buildings & Other	11,386
Gross amount at December 31, 2019, Furniture & equipment	1,093
Accumulated depreciation	(2,526)
Net book value	$ 12,053
Hotel Indigo [Member] | Hotel Properties [Member] | Atlanta, Georgia [Member]
Real Estate and Accumulated Depreciation [Line Items]
Acquisition date	Oct. 02, 2015
Encumbrance	WELLS
Initial cost, Land	$ 800
Initial cost, Buildings & Other	8,700
Initial cost, Furniture & equipment	1,500
Additions, (dispositions), and (impairments) Subsequent to acquisition, Buildings & Other	159
Additions, (dispositions), and (impairments) Subsequent to acquisition, Furniture & equipment	285
Gross amount at December 31, 2019, Land	800
Gross amount at December 31, 2019, Buildings & Other	8,859
Gross amount at December 31, 2019, Furniture & equipment	1,785
Accumulated depreciation	(3,065)
Net book value	$ 8,379
Aloft [Member] | Hotel Properties [Member] | Atlanta, Georgia [Member]
Real Estate and Accumulated Depreciation [Line Items]
Acquisition date	Feb. 14, 2020
Encumbrance	KEY
Initial cost, Land	$ 14,728
Initial cost, Buildings & Other	37,020
Initial cost, Furniture & equipment	2,432
Additions, (dispositions), and (impairments) Subsequent to acquisition, Furniture & equipment	23
Gross amount at December 31, 2019, Land	14,728
Gross amount at December 31, 2019, Buildings & Other	37,020
Gross amount at December 31, 2019, Furniture & equipment	2,455
Accumulated depreciation	(1,603)
Net book value	$ 52,600
Aloft [Member] | Hotel Properties [Member] | Leawood, Kansas [Member]
Real Estate and Accumulated Depreciation [Line Items]
Acquisition date	Dec. 14, 2016
Encumbrance	OSK
Initial cost, Land	$ 3,339
Initial cost, Buildings & Other	18,046
Initial cost, Furniture & equipment	1,115
Additions, (dispositions), and (impairments) Subsequent to acquisition, Buildings & Other	369
Additions, (dispositions), and (impairments) Subsequent to acquisition, Furniture & equipment	1,537
Gross amount at December 31, 2019, Land	3,339
Gross amount at December 31, 2019, Buildings & Other	18,415
Gross amount at December 31, 2019, Furniture & equipment	2,652
Accumulated depreciation	(3,595)
Net book value	$ 20,811
Home2 Suites [Member] | Hotel Properties [Member] | Lexington, Kentucky [Member]
Real Estate and Accumulated Depreciation [Line Items]
Acquisition date	Mar. 24, 2017
Encumbrance	KEY
Initial cost, Land	$ 905
Initial cost, Buildings & Other	14,204
Initial cost, Furniture & equipment	1,351
Additions, (dispositions), and (impairments) Subsequent to acquisition, Buildings & Other	159
Additions, (dispositions), and (impairments) Subsequent to acquisition, Furniture & equipment	167
Gross amount at December 31, 2019, Land	905
Gross amount at December 31, 2019, Buildings & Other	14,363
Gross amount at December 31, 2019, Furniture & equipment	1,518
Accumulated depreciation	(2,532)
Net book value	$ 14,254
Home2 Suites [Member] | Hotel Properties [Member] | Round Rock, Texas [Member]
Real Estate and Accumulated Depreciation [Line Items]
Acquisition date	Mar. 24, 2017
Encumbrance	KEY
Initial cost, Land	$ 1,087
Initial cost, Buildings & Other	14,345
Initial cost, Furniture & equipment	1,285
Additions, (dispositions), and (impairments) Subsequent to acquisition, Buildings & Other	170
Additions, (dispositions), and (impairments) Subsequent to acquisition, Furniture & equipment	35
Gross amount at December 31, 2019, Land	1,087
Gross amount at December 31, 2019, Buildings & Other	14,515
Gross amount at December 31, 2019, Furniture & equipment	1,320
Accumulated depreciation	(2,407)
Net book value	$ 14,515
Home2 Suites [Member] | Hotel Properties [Member] | Tallahassee, Florida [Member]
Real Estate and Accumulated Depreciation [Line Items]
Acquisition date	Mar. 24, 2017
Encumbrance	KEY
Initial cost, Land	$ 1,519
Initial cost, Buildings & Other	18,229
Initial cost, Furniture & equipment	1,727
Additions, (dispositions), and (impairments) Subsequent to acquisition, Buildings & Other	164
Additions, (dispositions), and (impairments) Subsequent to acquisition, Furniture & equipment	28
Gross amount at December 31, 2019, Land	1,519
Gross amount at December 31, 2019, Buildings & Other	18,393
Gross amount at December 31, 2019, Furniture & equipment	1,755
Accumulated depreciation	(3,120)
Net book value	$ 18,547
Home2 Suites [Member] | Hotel Properties [Member] | Southaven, Mississippi [Member]
Real Estate and Accumulated Depreciation [Line Items]
Acquisition date	Apr. 14, 2017
Encumbrance	MS
Initial cost, Land	$ 1,311
Initial cost, Buildings & Other	16,792
Initial cost, Furniture & equipment	897
Additions, (dispositions), and (impairments) Subsequent to acquisition, Buildings & Other	180
Additions, (dispositions), and (impairments) Subsequent to acquisition, Furniture & equipment	103
Gross amount at December 31, 2019, Land	1,311
Gross amount at December 31, 2019, Buildings & Other	16,972
Gross amount at December 31, 2019, Furniture & equipment	1,000
Accumulated depreciation	(2,709)
Net book value	$ 16,574
Home2 Suites [Member] | Hotel Properties [Member] | Summerville, South Carolina [Member]
Real Estate and Accumulated Depreciation [Line Items]
Acquisition date	Feb. 21, 2018
Encumbrance	KEY
Initial cost, Land	$ 998
Initial cost, Buildings & Other	13,491
Initial cost, Furniture & equipment	1,854
Additions, (dispositions), and (impairments) Subsequent to acquisition, Buildings & Other	191
Additions, (dispositions), and (impairments) Subsequent to acquisition, Furniture & equipment	36
Gross amount at December 31, 2019, Land	998
Gross amount at December 31, 2019, Buildings & Other	13,682
Gross amount at December 31, 2019, Furniture & equipment	1,890
Accumulated depreciation	(1,934)
Net book value	$ 14,636
Hampton Inn And Suites [Member] | Hotel Properties [Member] | Lake Mary, Florida [Member]
Real Estate and Accumulated Depreciation [Line Items]
Acquisition date	Jun. 19, 2017
Encumbrance	KEY
Initial cost, Land	$ 1,200
Initial cost, Buildings & Other	16,432
Initial cost, Furniture & equipment	1,773
Additions, (dispositions), and (impairments) Subsequent to acquisition, Buildings & Other	304
Additions, (dispositions), and (impairments) Subsequent to acquisition, Furniture & equipment	206
Gross amount at December 31, 2019, Land	1,200
Gross amount at December 31, 2019, Buildings & Other	16,736
Gross amount at December 31, 2019, Furniture & equipment	1,979
Accumulated depreciation	(2,799)
Net book value	$ 17,116
Fairfield Inn & Suites [Member] | Hotel Properties [Member] | El Paso, Texas [Member]
Real Estate and Accumulated Depreciation [Line Items]
Acquisition date	Aug. 31, 2017
Encumbrance	KEY
Initial cost, Land	$ 1,014
Initial cost, Buildings & Other	14,297
Initial cost, Furniture & equipment	1,089
Additions, (dispositions), and (impairments) Subsequent to acquisition, Buildings & Other	117
Additions, (dispositions), and (impairments) Subsequent to acquisition, Furniture & equipment	48
Gross amount at December 31, 2019, Land	1,014
Gross amount at December 31, 2019, Buildings & Other	14,414
Gross amount at December 31, 2019, Furniture & equipment	1,137
Accumulated depreciation	(2,053)
Net book value	$ 14,512
Residence Inn [Member] | Hotel Properties [Member] | Austin, Texas [Member]
Real Estate and Accumulated Depreciation [Line Items]
Acquisition date	Aug. 31, 2017
Encumbrance	KEY
Initial cost, Land	$ 1,495
Initial cost, Buildings & Other	19,630
Initial cost, Furniture & equipment	1,275
Additions, (dispositions), and (impairments) Subsequent to acquisition, Buildings & Other	163
Additions, (dispositions), and (impairments) Subsequent to acquisition, Furniture & equipment	78
Gross amount at December 31, 2019, Land	1,495
Gross amount at December 31, 2019, Buildings & Other	19,793
Gross amount at December 31, 2019, Furniture & equipment	1,353
Accumulated depreciation	(2,514)
Net book value	$ 20,127
TownePlace Suites [Member] | Hotel Properties [Member] | Austin, Texas [Member]
Real Estate and Accumulated Depreciation [Line Items]
Acquisition date	Jan. 18, 2018
Encumbrance	KEY
Initial cost, Land	$ 1,435
Initial cost, Buildings & Other	16,459
Initial cost, Furniture & equipment	1,729
Additions, (dispositions), and (impairments) Subsequent to acquisition, Buildings & Other	180
Additions, (dispositions), and (impairments) Subsequent to acquisition, Furniture & equipment	38
Gross amount at December 31, 2019, Land	1,435
Gross amount at December 31, 2019, Buildings & Other	16,639
Gross amount at December 31, 2019, Furniture & equipment	1,767
Accumulated depreciation	(2,144)
Net book value	$ 17,697