Consolidated Statements of Cash Flows (Parenthetical) $ in Thousands	12 Months Ended
Dec. 31, 2021 USD ($)
Discontinued operations	$ 2,348
Development fees	1,445
Vornado
Development fees	$ 141

Amount of difference between the carrying amount and the sales price of real estate properties sold as part of discontinued operations.

No definition available.

Name:	us-gaap_GainLossOnDispositionOfRealEstateDiscontinuedOperations
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration