Income Taxes - Schedule of Deferred Tax Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Deferred tax assets:
Deferred revenue on unredeemed Observatory admission ticket sales	$ 616	$ 535	$ 383
Federal net operating loss carryforward credit	328	969	1,393
New York State net operating loss carryforward credit	0	250	612
New York City net operating loss carryforward credit	0	233	704
Other deferred tax assets	161	261	0
Deferred tax assets	$ 1,105	$ 2,248	$ 3,092