Significant Accounting Policies - Schedule of Properties Contributed of Annualized Cash Rent (Details) - Annualized Rent - Customer Concentration	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
One Vanderbilt Avenue
Concentration of Credit Risk
Percentage of concentration (percent)	14.70%	16.00%	14.10%
11 Madison Avenue
Concentration of Credit Risk
Percentage of concentration (percent)	8.80%	8.30%	7.80%
420 Lexington Avenue
Concentration of Credit Risk
Percentage of concentration (percent)	7.00%	6.70%	6.30%
1515 Broadway
Concentration of Credit Risk
Percentage of concentration (percent)	6.70%	6.40%	5.80%
245 Park Avenue
Concentration of Credit Risk
Percentage of concentration (percent)	6.70%	5.50%	10.00%
1185 Avenue of the Americas
Concentration of Credit Risk
Percentage of concentration (percent)	5.90%	5.60%	5.10%
280 Park Avenue
Concentration of Credit Risk
Percentage of concentration (percent)	5.20%	5.50%	5.10%