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Consolidated Statements of Cash Flows (Parentheticals) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Deferred gain on disposal of discontinued operation | $ 2,348 |  |
Liability for real estate additions | 1,445 | $ 4,955 | $ 3,191
Vornado |  |  |
Liability for real estate additions | $ 141 | $ 489 | $ 18

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