Commitments and Contingencies (Tables)

12 Months Ended

Dec. 31, 2023

Commitments and Contingencies Disclosure [Abstract]

Schedule of Percent of Total Rental Revenue

For the years ended December 31, 2023, 2022 and 2021, the three properties listed below each exceeded 10% of total rental revenues.

	Year Ended December 31,
	2023		2022		2021
Empire State Building	29.6	%	29.9	%	31.7	%
One Grand Central Place	12.8	%	12.4	%	12.6	%
111 West 33rd Street	10.8	%	11.2	%	11.3	%

Schedule of Contributions to Multiemployer Plans

Contributions we made to the multi-employer plans for the years ended December 31, 2023, 2022 and 2021 are included in the table below (amounts in thousands):

	For the Year Ended December 31,
Benefit Plan	2023		2022		2021
Pension Plans (pension and annuity)*	$	3,671	$	2,958	$	2,165
Health Plans**	8,812		8,618		6,214
Other***	434		460		305
Total plan contributions	$	12,917	$	12,036	$	8,684

*    Pension plans include $0.8 million, $0.8 million and $0.7 million for the years ended 2023, 2022 and 2021, respectively, to multiemployer plans not discussed above.

** Health plans include $1.6 million, $1.5 million and $1.4 million for the years ended 2023, 2022 and 2021, respectively, to multiemployer plans not discussed above.

*** Other consists of union costs which were not itemized between pension and health plans. Other includes $0.3 million, $0.2 million and $0.2 million for the years ended 2023, 2022 and 2021, respectively, in connection with other multiemployer plans not discussed above.