Basis of Presentation and Significant Accounting Policies (Recently Issued Accounting Literature) (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Long term debt	$ 2,563,432	$ 2,560,025
Prime Rate | 731 Lexington Avenue
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Ownership interest	32.40%
731 Lexington Avenue | Mortgages Payable | Prime Rate
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Long term debt	$ 500,000