Significant Assumptions Utilized in Estimates (Narrative) (Details)	Dec. 31, 2021 buildings $ / sqft $ / a	Dec. 31, 2020 buildings $ / sqft $ / a	Dec. 31, 2019 buildings
Asset Acquisition [Line Items]
Number of Real Estate Properties | buildings	8	10	6
Industrial [Member] | Minimum [Member]
Asset Acquisition [Line Items]
Fair Value Measurement With Unobservable Inputs Rental Rate Per Square Foot | $ / sqft	6.62	5.28
Industrial [Member] | Maximum [Member]
Asset Acquisition [Line Items]
Fair Value Measurement With Unobservable Inputs Rental Rate Per Square Foot | $ / sqft	17.16	18.11
Industrial Property | Minimum [Member]
Asset Acquisition [Line Items]
Fair Value Measurement, Annual Net rental rate per acre on acquired ground lease | $ / a	182,136	0
Industrial Property | Maximum [Member]
Asset Acquisition [Line Items]
Fair Value Measurement, Annual Net rental rate per acre on acquired ground lease | $ / a	182,136	0
Measurement Input, Cap Rate [Member] | Minimum [Member]
Asset Acquisition [Line Items]
Fair Value Inputs, Capitalization Rate	3.50%	3.98%
Measurement Input, Cap Rate [Member] | Maximum [Member]
Asset Acquisition [Line Items]
Fair Value Inputs, Capitalization Rate	5.00%	5.46%