Stock-based Compensation (Vornado Restricted Stock or Operating Partnership Units Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Restricted Operating Partnership Units Plan
Share Based Compensation Equity Instruments Other Than Stock Options And Restricted Stock Units Summary
Award vesting period (years)	4 years
Distributions, share-based compensation	$ 2,634	$ 5,316	$ 4,070
Grant-date fair value	26,194	18,013	58,732
Vested in period, fair value	$ 36,541	24,373	27,821
Restricted Stock Units RSU
Share Based Compensation Equity Instruments Other Than Stock Options And Restricted Stock Units Summary
Award vesting period (years)	4 years
Distributions, share-based compensation	$ 35	98	51
Grant-date fair value		853	568
Vested in period, fair value	$ 567	$ 602	$ 477

Amount of paid and unpaid cash, stock, and paid-in-kind dividends declared for award under share-based payment arrangement.

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Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)(1)
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Fair value of share-based awards for which the grantee gained the right by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (d)(2)
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

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- Definition

The fair value at grant date for equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

+ References

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