Significant Accounting Policies - Schedule of Properties Contributed of Annualized Cash Rent (Details) - Annualized Rent - Customer Concentration	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
One Vanderbilt Avenue
Concentration of Credit Risk
Percentage of concentration (percent)	12.80%	14.70%	16.00%
11 Madison Avenue
Concentration of Credit Risk
Percentage of concentration (percent)	8.00%	8.80%	8.30%
245 Park Avenue
Concentration of Credit Risk
Percentage of concentration (percent)	7.20%	6.70%	5.50%
420 Lexington Avenue
Concentration of Credit Risk
Percentage of concentration (percent)	7.10%	7.00%	6.70%
1515 Broadway
Concentration of Credit Risk
Percentage of concentration (percent)	6.50%	6.70%	6.40%
1185 Avenue of the Americas
Concentration of Credit Risk
Percentage of concentration (percent)		5.90%	5.60%
280 Park Avenue
Concentration of Credit Risk
Percentage of concentration (percent)	5.20%	5.20%	5.50%