Indebtedness - Acquisition Facility (Details)	12 Months Ended
	Dec. 31, 2021 USD ($) extensionOption	Mar. 25, 2019 USD ($)	Dec. 31, 2017 USD ($)
Debt Instrument [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity			$ 200,000,000
Indebtedness Weighted Average Remaining Maturity	8 years 8 months 12 days
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Unamortized Debt Issuance Expense	$ 1,800,000
Indebtedness Weighted Average Remaining Maturity	2 years 4 months 24 days
acquisition facility [Member]
Debt Instrument [Line Items]
Debt Instrument, Number Of Renewal Options | extensionOption	2
Debt Instrument, Renewal Term	1 year
Minimum [Member] | Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Loans Receivable, Basis Spread on Variable Rate	2.50%
Maximum [Member] | Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Loans Receivable, Basis Spread on Variable Rate	3.50%
February 2017 facility [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity	$ 200,000,000	$ 90,000,000
February 2017 facility [Member] | Minimum [Member] | Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Loans Receivable, Basis Spread on Variable Rate	1.75%
February 2017 facility [Member] | Maximum [Member] | Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Loans Receivable, Basis Spread on Variable Rate	2.20%