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v3.24.3

CONSOLIDATED STATEMENTS OF CASH FLOWS (Parenthetical) $ in Thousands | 9 Months Ended
--- | ---
Sep. 30, 2024 USD ($)
Development fees | $ 6,143
Related Party |
Development fees | $ 192

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- Definition Non-cash additions to real estate included in accounts payable and accrued expenses. + References No definition available. + Details
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Namespace Prefix: | alx_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |