Income Taxes - Schedule of Deferred Tax Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Deferred tax assets:
Deferred revenue on unredeemed observatory admission ticket sales	$ 383	$ 256	$ 916
Federal net operating loss carryforward credit	1,393	0	0
New York State net operating loss carryforward credit	612	0	0
New York City net operating loss carryforward credit	704	334	0
Deferred tax assets	$ 3,092	$ 590	$ 916

Deferred Tax Assets, Operating Loss Carryforwards, Local

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Deferred Tax Assets, Operating Loss Carryforwards, State

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from deferred income.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
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Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible domestic operating loss carryforwards. Excludes state and local operating loss carryforwards.

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