Property Portfolio - (Details)

v3.20.4

Property Portfolio - (Details) $ in Thousands																																		12 Months Ended
	Dec. 30, 2020 USD ($) building lease	Dec. 29, 2020 USD ($) tenant building lease	Dec. 14, 2020 USD ($) lease building	Dec. 01, 2020 USD ($) lease building	Nov. 23, 2020 USD ($)	Nov. 18, 2020 USD ($) building lease	Oct. 27, 2020 USD ($) tenant building lease	Oct. 20, 2020 USD ($) building lease tenant	Sep. 30, 2020 USD ($) lease	Sep. 18, 2020 USD ($)	Jul. 31, 2020 USD ($) tenant lease	Jul. 17, 2020 USD ($)	Jul. 16, 2020 USD ($)	Apr. 27, 2020 USD ($)	Mar. 20, 2020 USD ($) lease	Mar. 04, 2020 USD ($)	Feb. 27, 2020 USD ($)	Feb. 13, 2020 USD ($)	Dec. 17, 2019 USD ($)	Nov. 15, 2019 USD ($)	Oct. 31, 2019 USD ($)	Oct. 25, 2019 USD ($)	Oct. 01, 2019 USD ($)	Sep. 26, 2019 USD ($)	Aug. 23, 2019 USD ($)	Aug. 14, 2019 USD ($) lease	Aug. 06, 2019 USD ($)	Aug. 05, 2019 USD ($) lease	Aug. 01, 2019 USD ($) lease	Jul. 12, 2019 USD ($)	Apr. 15, 2019 USD ($) lease	Mar. 19, 2019 USD ($) building lease	Feb. 28, 2019 USD ($)	Dec. 31, 2020 USD ($) property	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)
Property, Plant and Equipment [Line Items]
Number of Properties Acquired | property																																		18
Depreciation, Total																																		$ 26,747	$ 19,066	$ 13,644
Tenant Improvement Allowances Receivable																																		30,094
Capital Lease Obligations, Noncurrent																																		19,434
Property, Plant and Equipment, Additions																																		$ 237,376	$ 257,979
Debt Instrument, Term																																		2 years 9 months 14 days	3 years 9 months 3 days
Operating Lease, Weighted Average Remaining Lease Term																																		41 years
Commercial mortgage-backed securities (CMBS)
Property, Plant and Equipment [Line Items]
Debt Instrument, Face Amount														$ 12,100
Debt Instrument, Interest Rate, Stated Percentage														4.68%
Debt Instrument, Term														4 years
Lease Intangibles Asset [Member]
Property, Plant and Equipment [Line Items]
Finite-Lived Intangible Asset, Useful Life																																		5 years 3 months 14 days
Lease Intangibles Liability [Member]
Property, Plant and Equipment [Line Items]
Finite-Lived Intangible Asset, Useful Life																																		4 years 9 months 25 days
Land [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Additions																																		$ 33,476	$ 31,671
Zachary Facility [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Additions																																	$ 4,600
Lessor, Operating Lease, Term of Contract																																	46 years
Gilbert And Chandler Facility [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Additions																																$ 16,300
Number or leases assumed | lease																																2
Number of new leases entered into | lease																																3
Gilbert Arizona Medical Office Buildings [Member]
Property, Plant and Equipment [Line Items]
Number of medical offices | building																																2
Chandler Arizona Medical Office Suites [Member]
Property, Plant and Equipment [Line Items]
Number of medical offices | building																																2
Dobson Facility [Member]
Property, Plant and Equipment [Line Items]
Lessor, Operating Lease, Term of Contract																																10 years 6 months
IRF Portfolio [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Additions																															$ 94,600
Number or leases assumed | lease																															4
Operating Lease, Weighted Average Remaining Lease Term																															8 years 3 months 18 days
San Marcos [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Additions																														$ 12,000					11,974
Operating Lease, Weighted Average Remaining Lease Term																														8 years
San Marcos [Member] | Land [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Additions																																			2,322
Lansing [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Additions																													$ 11,100						11,368
Number or leases assumed | lease																													4
Number of new leases entered into | lease																													2
Operating Lease, Weighted Average Remaining Lease Term																													8 years 6 months
Lansing [Member] | Land [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Additions																																			1,202
Bannockburn [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Additions																												$ 6,800							6,977
Number or leases assumed | lease																												14
Operating Lease, Weighted Average Remaining Lease Term																												6 years 3 months 18 days
Bannockburn [Member] | Land [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Additions																																			763
Aurora [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Additions																											$ 12,600								12,557
Operating Lease, Weighted Average Remaining Lease Term																											6 years
Aurora [Member] | Land [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Additions																																			1,521
Livonia [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Additions																										$ 10,400									10,592
Number or leases assumed | lease																										10
Operating Lease, Weighted Average Remaining Lease Term																										3 years 2 months 12 days
Livonia [Member] | Land [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Additions																																			980
Gilbert [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Additions																									$ 5,600										5,592
Operating Lease, Weighted Average Remaining Lease Term																									10 years
Gilbert [Member] | Land [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Additions																																			2,408
Morgantown [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Additions																								$ 8,000											7,950
Operating Lease, Weighted Average Remaining Lease Term																								10 years
Morgantown [Member] | Land [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Additions																																			883
Beaumont [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Additions																							$ 33,700												33,739
Operating Lease, Weighted Average Remaining Lease Term																							10 years
Beaumont [Member] | Land [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Additions																																			3,022
Bastrop [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Additions																						$ 12,100													12,065
Operating Lease, Weighted Average Remaining Lease Term																						5 years
Bastrop [Member] | Land [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Additions																																			1,975
Panama City [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Additions																					$ 13,000														12,976
Operating Lease, Weighted Average Remaining Lease Term																					15 years
Panama City [Member] | Land [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Additions																																			1,559
Jacksonville [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Additions																				$ 8,900															8,869
Operating Lease, Weighted Average Remaining Lease Term																				15 years
Jacksonville [Member] | Land [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Additions																																			1,023
Greenwood [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Additions																			$ 5,800																5,848
Operating Lease, Weighted Average Remaining Lease Term																			13 years
Greenwood [Member] | Land [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Additions																																			$ 892
LTAC Hospital [Member]
Property, Plant and Equipment [Line Items]
Lessor, Operating Lease, Term of Contract																																	16 years
High Point Facility [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Additions																		$ 25,100																25,081
Lessor, Operating Lease, Term of Contract																		3 years
High Point Facility [Member] | Land [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Additions																																		1,749
Clinton Facility [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Additions																	$ 11,600																	11,619
Lessor, Operating Lease, Term of Contract																	4 years
Clinton Facility [Member] | Land [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Additions																																		664
West Allis Facility [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Additions																$ 9,100																		9,357
Lessor, Operating Lease, Term of Contract																4 years
West Allis Facility [Member] | Land [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Additions																																		974
Grand Rapids Facility [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Additions															$ 22,700																			22,794
Number or leases assumed | lease															11
Lessor, Operating Lease, Term of Contract															5 years
Grand Rapids Facility [Member] | Land [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Additions																																		2,951
Dumfries Facility [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Additions														$ 19,600
Lessor, Operating Lease, Term of Contract														9 years 6 months
Centerville Facility [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Additions													$ 5,100																					5,071
Lessor, Operating Lease, Term of Contract													10 years 6 months
Centerville Facility [Member] | Land [Member]
Property, Plant and Equipment [Line Items]
Operating Lease, Weighted Average Remaining Lease Term													49 years
Fairfax Facility [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Additions												$ 17,900																						19,745
Lessor, Operating Lease, Term of Contract												9 years 1 month 6 days
Fairfax Facility [Member] | Land [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Additions																																		6,731
Rosedale Facilities [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Additions											$ 23,100																							23,891
Debt Instrument, Face Amount											$ 14,800
Debt Instrument, Interest Rate, Stated Percentage											3.85%
Debt Instrument, Term											5 years
Number or leases assumed | lease											8
Number of tenants assumed | tenant											6
Lessor, Operating Lease, Term of Contract											6 years 7 months 6 days
Rosedale Facilities [Member] | Land [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Additions																																		2,856
Lancaster Facility [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Additions										$ 6,300																								6,305
Lessor, Operating Lease, Term of Contract										8 years 6 months
Lancaster Facility [Member] | Land [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Additions																																		696
Winston-Salem Facility [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Additions									$ 8,500																									9,240
Number or leases assumed | lease									5
Lessor, Operating Lease, Term of Contract									4 years
Winston-Salem Facility [Member] | Land [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Additions																																		1,524
Decatur and Jackson Facility [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Additions								$ 10,900																										10,912
Number or leases assumed | lease								6
Number of tenants assumed | tenant								5
Number of medical offices | building								2
Lessor, Operating Lease, Term of Contract								6 years
Decatur and Jackson Facility [Member] | Decatur [Member]
Property, Plant and Equipment [Line Items]
Number of medical offices | building								1
Decatur and Jackson Facility [Member] | Jackson [Member]
Property, Plant and Equipment [Line Items]
Number of medical offices | building								1
Decatur and Jackson Facility [Member] | Land [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Additions																																		2,237
Sheboygan and Plymouth Facility [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Additions							$ 13,800																											13,824
Number or leases assumed | lease							3
Number of tenants assumed | tenant							2
Number of medical offices | building							2
Lessor, Operating Lease, Term of Contract							5 years
Sheboygan and Plymouth Facility [Member] | Sheboygan [Member]
Property, Plant and Equipment [Line Items]
Number of medical offices | building							1
Sheboygan and Plymouth Facility [Member] | Plymouth [Member]
Property, Plant and Equipment [Line Items]
Number of medical offices | building							1
Sheboygan and Plymouth Facility [Member] | Land [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Additions																																		1,088
Spring Hill and Hudson Facility [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Additions						$ 18,200																												18,218
Number or leases assumed | lease						3
Number of medical offices | building						3
Lessor, Operating Lease, Term of Contract						8 years
Spring Hill and Hudson Facility [Member] | Spring Hill [Member]
Property, Plant and Equipment [Line Items]
Number of medical offices | building						2
Spring Hill and Hudson Facility [Member] | Hudson [Member]
Property, Plant and Equipment [Line Items]
Number of medical offices | building						1
Spring Hill and Hudson Facility [Member] | Land [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Additions																																		3,473
Cape Girardeau Facility [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Additions					$ 7,400																													7,350
Lessor, Operating Lease, Term of Contract					6 years
Cape Girardeau Facility [Member] | Land [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Additions																																		1,150
Yuma Facility [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Additions				$ 7,000																														6,979
Number or leases assumed | lease				2
Number of medical offices | building				2
Lessor, Operating Lease, Term of Contract				4 years
Yuma Facility [Member] | Land [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Additions																																		1,041
Las Vegas Facility [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Additions			$ 7,100																															7,124
Number of tenants assumed | lease			2
Number of medical offices | building			2
Lessor, Operating Lease, Term of Contract			12 years
Las Vegas Facility [Member] | Land [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Additions																																		311
Pensacola Facility [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Additions		$ 9,100																																9,052
Number or leases assumed | lease		3
Number of tenants assumed | tenant		2
Number of medical offices | building		3
Lessor, Operating Lease, Term of Contract		9 years
Pensacola Facility [Member] | Land [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Additions																																		1,786
Venice Facility [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Additions	$ 7,000																																	6,975
Number or leases assumed | lease	2
Number of medical offices | building	2
Lessor, Operating Lease, Term of Contract	5 years 6 months
Venice Facility [Member] | Land [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Additions																																		$ 1,648