Summary of Significant Accounting Policies - Narrative (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2021
Organization and Description of Business [Line Items]
Fair value of secured borrowings	$ 27,400,000		$ 27,400,000		$ 32,100,000
Principal balance	33,100,000		33,100,000		33,200,000
Impairment			0	$ 0
Rental income	13,181,000	$ 10,204,000	36,665,000	$ 27,668,000
Operating lease liability	971,000		971,000
ROU asset – operating leases	968,000		968,000		1,058,000
Interest Rate Swap | Fair Value, Inputs, Level 2
Organization and Description of Business [Line Items]
Fair value, hedging instrument	$ 9,300,000		$ 9,300,000		$ 1,000,000
Geographic Concentration Risk | Revenue Benchmark | PENNSYLVANIA
Organization and Description of Business [Line Items]
Concentration risk, percentage			15.40%	18.30%
Rental income			$ 5,600,000	$ 5,100,000