Derivative Financial Instruments - Floating-to-Fixed Interest Rate Swaps (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Derivative [Line Items]
Notional amount	$ 1,123,710	$ 1,073,587
Interest rate swaps
Derivative [Line Items]
Notional amount	288,659
Not designated as accounting hedges
Derivative [Line Items]
Notional amount	524,579	449,579
Not designated as accounting hedges | Interest rate swaps
Derivative [Line Items]
Notional amount	50,000	50,000
Not designated as accounting hedges | Senior Unsecured Term Loan 2.78% | Interest rate swaps
Derivative [Line Items]
Notional amount	$ 50,000
Fixed interest rate	2.78%
Effective interest rate	4.23%
Designated as accounting hedge | Interest rate swaps
Derivative [Line Items]
Notional amount	$ 238,659	$ 239,633
Designated as accounting hedge | Senior Unsecured Term Loan 2.26% | Interest rate swaps
Derivative [Line Items]
Notional amount	$ 50,000
Fixed interest rate	2.26%
Effective interest rate	3.71%
Designated as accounting hedge | 249 Central Park Retail, South Retail, and Fountain Plaza Retail | Interest rate swaps
Derivative [Line Items]
Notional amount	$ 33,115
Fixed interest rate	2.25%
Effective interest rate	3.85%
Designated as accounting hedge | Senior Unsecured Term Loan 3.02% | Interest rate swaps
Derivative [Line Items]
Notional amount	$ 10,500
Fixed interest rate	3.02%
Effective interest rate	4.47%
Designated as accounting hedge | Senior Unsecured Term Loan 0.50%, Term Loan One | Interest rate swaps
Derivative [Line Items]
Notional amount	$ 25,000
Fixed interest rate	0.50%
Effective interest rate	1.95%
Designated as accounting hedge | Senior Unsecured Term Loan 0.50%, Term Loan Two | Interest rate swaps
Derivative [Line Items]
Notional amount	$ 25,000
Fixed interest rate	0.50%
Effective interest rate	1.95%
Designated as accounting hedge | Senior Unsecured Term Loan 0.55% | Interest rate swaps
Derivative [Line Items]
Notional amount	$ 25,000
Fixed interest rate	0.55%
Effective interest rate	2.00%
Designated as accounting hedge | Thames Street Wharf | Interest rate swaps
Derivative [Line Items]
Notional amount	$ 70,044
Fixed interest rate	1.05%
Effective interest rate	2.35%