Debt (Schedule of Principal Maturities of Mortgages Payable and Unsecured Debt) (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Nov. 06, 2024	Dec. 31, 2023
Debt Instrument
Long term debt	$ 2,566,862		$ 2,563,432
Mortgages Payable
Debt Instrument
Long term debt		$ 145,000
Contractual Obligation, Fiscal Year Maturity Schedule [Abstract]
2025	878,057
2026	525,000
2027	1,580,000
2028	2,300,000
2029	0
Thereafter	$ 350,000
Interest rate, effective percentage (in percent)	4.90%
Unsecured Debt
Contractual Obligation, Fiscal Year Maturity Schedule [Abstract]
2025	$ 450,000
2026	400,000
2027	1,375,000
2028	0
2029	0
Thereafter	350,000
Senior unsecured notes
Debt Instrument
Long term debt	$ 1,195,914		$ 1,193,873
Contractual Obligation, Fiscal Year Maturity Schedule [Abstract]
Interest rate, effective percentage (in percent)	3.02%
Mortgage, 606 Broadway
Debt Instrument
Long term debt	$ 74,119