SCHEDULE IV - MORTGAGE LOANS ON REAL ESTATE - Loans On Real Estate (Parenthetical) (Details) $ in Millions	Dec. 31, 2024 USD ($)
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Abstract]
Notes receivable net of CECL	$ 126.2

Notes receivable net of current expected credit losses.

No definition available.

Name:	akr_NotesReceivableNetOfCurrentExpectedCreditLosses
Namespace Prefix:	akr_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant