Investments in Partially Owned Entities (Alexander's Inc.) (Details) - Alexander’s $ / shares in Units, $ in Thousands	Sep. 30, 2022 USD ($) $ / shares shares
Schedule Of Equity Method Investments
Ownership common shares, investee (in shares) \| shares	1,654,068
Equity method ownership percentage	32.40%
Closing share price (in dollars per share) \| $ / shares	$ 208.96
Equity method investment fair value	$ 345,634
Excess of investee's fair value over carrying amount	254,356
Excess of investee's carrying amount over equity in net assets	$ 29,828

Difference between amount at which an investment accounted for under the equity method of accounting is carried (reported) on the balance sheet and amount of underlying equity in net assets the reporting Entity has in the investee.

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The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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Balance held at close of period in number of shares.

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Per share amount received by subsidiary or equity investee for each share of common stock issued or sold in the stock transaction.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Equity Method Investment Fair Value In Excess Of Carrying Amount

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