Variable Interest Entities - Schedule of Assets and Liabilities Included in Consolidated Balance Sheets (Details) - USD ($) $ in Thousands		Sep. 30, 2023		Dec. 31, 2022		Sep. 30, 2022		Dec. 31, 2021
VIE ASSETS [Abstract]
Operating real estate, net		$ 3,482,675		$ 3,343,265
Real estate under development		92,729		184,602
Investments in and advances to unconsolidated affiliates		184,034		291,156
Other assets, net		243,498		229,591
Right-of-use assets - operating leases, net		30,180		37,281
Cash and cash equivalents		19,312		17,158		$ 18,068		$ 17,746
Restricted cash		7,868		15,063		12,635		$ 9,813
Rents receivable, net		50,415		49,506
Total assets		4,280,778	[1],[2]	4,302,582	[2]	$ 4,363,498	[1]
Liabilities [Abstract]
Mortgage and other notes payable, net		961,611		928,639
Unsecured notes payable, net		666,188		696,134
Accounts payable and other liabilities		221,586		196,491
Lease liability - operating leases, net		32,520		35,271
Total liabilities	[2]	2,101,256		2,053,722
VIE
VIE ASSETS [Abstract]
Operating real estate, net		1,636,783		1,466,381
Real estate under development		28,132		129,888
Investments in and advances to unconsolidated affiliates		100,502		210,922
Other assets, net		97,396		98,675
Right-of-use assets - operating leases, net		2,220		2,535
Cash and cash equivalents		10,506		13,330
Restricted cash		7,400		14,995
Rents receivable, net		19,666		17,915
Total assets	[3]	1,902,605		1,954,641
Liabilities [Abstract]
Mortgage and other notes payable, net		795,600		761,166
Unsecured notes payable, net		20,264		51,202
Accounts payable and other liabilities		122,162		95,385
Lease liability - operating leases, net		2,326		2,657
Total liabilities	[3]	$ 940,352		$ 910,410

[1] Real estate at cost and total assets for the Funds segment include $670.1 million and $661.7 million, or $423.8 million and $418.5 million net of noncontrolling interests, related to Fund II’s City Point property at September 30, 2023 and 2022, respectively.

[2] 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 consolidated balance sheets include the following amounts related to our consolidated VIEs that are consolidated by the Operating Partnership: $1,636.8 million and $1,466.4 million of Operating real estate, net; $28.1 million and $129.9 million of Real estate under development; $100.5 million and $210.9 million of Investments in and advances to unconsolidated affiliates; $97.4 million and $98.7 million of Other assets, net; $2.2 million and $2.5 million of Right-of-use assets - operating leases, net; $10.5 million and $13.3 million of Cash and cash equivalents; $7.4 million and $15.0 million of Restricted cash; $19.7 million and $17.9 million of Rents receivable, net; $795.6 million and $761.2 million of Mortgage and other notes payable, net; $20.3 million and $51.2 million of Unsecured notes payable, net; $122.2 million and $95.4 million of Accounts payable and other liabilities; $2.3 million and $2.7 million of Lease liability- operating leases, net as of September 30, 2023 and December 31, 2022, respectively.

[3] At September 30, 2023 and December 31, 2022, includes total VIE assets of $670.5 million and $678.1 million, respectively, and total VIE liabilities of $206.0 million and $200.4 million, respectively, related to third-party mortgages that are collateralized by the real estate assets of City Point, a Fund II property, and 27 East 61st Street, 801 Madison Avenue, and 1035 Third Avenue, all Fund IV properties, of which $72.5 million is guaranteed by the Operating Partnership (Note 9). The remaining VIE assets are generally encumbered by third-party non-recourse mortgage debt and are collateral under the respective mortgages and are therefore restricted and can only be used to settle the corresponding liabilities of the VIE. The remaining VIE assets may only be used to settle obligations of these consolidated VIEs and the remaining VIE liabilities are only the obligations of these consolidated VIEs and they do not have recourse to the Operating Partnership or the Company.