Investments in and Advances to Unconsolidated Affiliates - Unconsolidated Affiliates - Schedule of Condensed Balance Sheet (Details) - USD ($) $ in Thousands		Jun. 30, 2025		Dec. 31, 2024		Jun. 30, 2024	[2]
Combined and Condensed Balance Sheets
Other assets		$ 219,598		$ 223,767
Total assets		4,875,569	[1],[2]	4,371,203	[1]	$ 4,251,038
Total liabilities, redeemable noncontrolling interests, and equity		4,875,569		4,371,203
Investments carried at cost	[3]	3,716		4,540
Company's share of distributions in excess of income from and investments in unconsolidated affiliates		(17,223)		(16,514)
Investments in and advances to unconsolidated affiliates		172,418		209,232
Unconsolidated Affiliates
Combined and Condensed Balance Sheets
Rental property, net		913,705		1,016,229
Other assets		130,631		162,713
Total assets		1,044,336		1,178,942
Mortgage notes payable		633,687		815,045
Other liabilities		132,047		140,743
Partners’ equity		278,602		223,154
Total liabilities, redeemable noncontrolling interests, and equity		1,044,336		1,178,942
Company's share of accumulated equity		135,654		131,793
Basis differential		9,056		50,851
Deferred fees, net of portion related to the Company's interest		5,399		5,400
Amounts receivable/payable by the Company		1,419		446
Investments in and advances to unconsolidated affiliates, net of Company's share of distributions in excess of income from and investments in unconsolidated affiliates		151,528		188,490
Investments carried at cost		3,667		4,228
Company's share of distributions in excess of income from and investments in unconsolidated affiliates		17,223		16,514
Investments in and advances to unconsolidated affiliates		$ 172,418		$ 209,232

[1] Represents the consolidated assets and liabilities of Acadia Realty Limited Partnership (the “Operating Partnership”), which is a consolidated variable interest entity (“VIE”) (Note 15). The Condensed Consolidated Balance Sheets include the following amounts related to our consolidated VIEs that are consolidated by the Operating Partnership: $1,828.6 million and $1,640.1 million of Operating real estate, net; $33.2 million and $31.5 million of Real estate under development; $64.4 million and $74.4 million of Investments in and advances to unconsolidated affiliates; $88.6 million and $79.4 million of Other assets, net; $1.8 million and $2.0 million of Right-of-use assets - operating leases, net; $28.2 million and $15.9 million of Cash and cash equivalents; $13.8 million and $11.0 million of Restricted cash; $28.0 million and $27.3 million of Rents receivable, net; $904.5 million and $799.7 million of Mortgage and other notes payable, net; $130.0 million and $120.1 million of Accounts payable and other liabilities; $1.8 million and $2.1 million of Lease liability- operating leases as of June 30, 2025 and December 31, 2024, respectively.

[2] Total assets for the Investment Management segment include $533.7 million and $549.3 million related to Fund II’s City Point property as of June 30, 2025 and 2024, respectively.

[3] Includes cost-method investment in Fifth Wall. The Company recorded an impairment charge of $0.4 million for the six months ended June 30, 2025, which is included in Realized and unrealized holding gains (losses) on investments and other in the Company’s Condensed Consolidated Statements of Operations.