Segment Reporting - Summary of Segment Information (Details) - USD ($) $ in Thousands		3 Months Ended				6 Months Ended
		Jun. 30, 2023		Jun. 30, 2022		Jun. 30, 2023		Jun. 30, 2022		Dec. 31, 2022	[2]
Segment Reporting Information [Line Items]
Total revenues		$ 89,948		$ 84,259		$ 171,787		$ 165,766
Depreciation and amortization		(34,056)		(34,971)		(67,229)		(68,684)
Property operating expenses and real estate taxes		(25,591)		(25,195)		(52,203)		(49,825)
General and administrative expenses		(10,643)		(10,661)		(20,589)		(22,598)
Impairment charges		0				0
Gain on disposition of properties		0		12,216		0		41,031
Operating income		19,658		25,648		31,766		65,690
Interest and other income		4,970		2,961		9,788		5,896
Realized and unrealized holding gains on investments and other		1,815		(26,283)		28,572		(10,553)
Equity in earnings of unconsolidated affiliates		(1,437)		1,280		(1,408)		4,410
Interest expense		(22,089)		(19,222)		(43,676)		(37,147)
Income tax provision		(165)		(209)		(288)		(24)
Net income (loss)		2,752		(15,825)		24,754		28,272
Net loss attributable to redeemable noncontrolling interests		1,091				3,166
Net loss (income) attributable to noncontrolling interests		5,433		15,451		(5,284)		(11,808)
Net income (loss) attributable to Acadia shareholders		9,276		(374)		22,636		16,464
Real estate at cost	[1]	4,282,979		4,335,157		4,282,979		4,335,157
Total assets		4,204,159	[1],[2]	4,438,884	[1]	4,204,159	[1],[2]	4,438,884	[1]	$ 4,302,582
Cash paid for acquisition of real estate						0		242,633
Cash paid for development and property improvement costs						30,570		25,281
Operating Segments | Core Portfolio
Segment Reporting Information [Line Items]
Total revenues		56,376		53,225		106,172		101,574
Depreciation and amortization		(20,035)		(20,061)		(38,694)		(37,736)
Property operating expenses and real estate taxes		(15,055)		(14,932)		(31,164)		(29,572)
General and administrative expenses		0		0		0		0
Impairment charges		0
Gain on disposition of properties		0		0				0
Operating income		21,286		18,232		36,314		34,266
Interest and other income		0		0		0		0
Realized and unrealized holding gains on investments and other		1,815		0		3,393		1,163
Equity in earnings of unconsolidated affiliates		924		788		2,723		2,405
Interest expense		(10,990)		(8,519)		(21,660)		(16,115)
Income tax provision		0		0		0		0
Net income (loss)		13,035		10,501		20,770		21,719
Net loss attributable to redeemable noncontrolling interests		0				0
Net loss (income) attributable to noncontrolling interests		(735)		(366)		(1,637)		(1,486)
Net income (loss) attributable to Acadia shareholders		12,300		10,135		19,133		20,233
Real estate at cost	[1]	2,613,206		2,606,083		2,613,206		2,606,083
Total assets	[1]	2,580,565		2,513,011		2,580,565		2,513,011
Cash paid for acquisition of real estate						0		242,633
Cash paid for development and property improvement costs						15,560		16,248
Operating Segments | Opportunity Funds
Segment Reporting Information [Line Items]
Total revenues		33,572		31,034		65,615		64,192
Depreciation and amortization		(14,021)		(14,910)		(28,535)		(30,948)
Property operating expenses and real estate taxes		(10,536)		(10,263)		(21,039)		(20,253)
General and administrative expenses		0		0		0		0
Impairment charges		0
Gain on disposition of properties		0		12,216				41,031
Operating income		9,015		18,077		16,041		54,022
Interest and other income		0		0		0		0
Realized and unrealized holding gains on investments and other		0		(26,383)		24,995		(11,816)
Equity in earnings of unconsolidated affiliates		(2,361)		492		(4,131)		2,005
Interest expense		(11,099)		(10,703)		(22,016)		(21,032)
Income tax provision		0		0		0		0
Net income (loss)		(4,445)		(18,517)		14,889		23,179
Net loss attributable to redeemable noncontrolling interests		1,091				3,166
Net loss (income) attributable to noncontrolling interests		6,168		15,817		(3,647)		(10,322)
Net income (loss) attributable to Acadia shareholders		2,814		(2,700)		14,408		12,857
Real estate at cost	[1]	1,669,773		1,729,074		1,669,773		1,729,074
Total assets	[1]	1,499,692		1,788,567		1,499,692		1,788,567
Cash paid for acquisition of real estate						0		0
Cash paid for development and property improvement costs						15,010		9,033
Operating Segments | Structured Financing
Segment Reporting Information [Line Items]
Total revenues		0		0		0		0
Depreciation and amortization		0		0		0		0
Property operating expenses and real estate taxes		0		0		0		0
General and administrative expenses		0		0		0		0
Impairment charges		0
Gain on disposition of properties		0		0				0
Operating income		0		0		0		0
Interest and other income		4,970		2,961		9,788		5,896
Realized and unrealized holding gains on investments and other		0		100		184		100
Equity in earnings of unconsolidated affiliates		0		0		0		0
Interest expense		0		0		0		0
Income tax provision		0		0		0		0
Net income (loss)		4,970		3,061		9,972		5,996
Net loss attributable to redeemable noncontrolling interests		0				0
Net loss (income) attributable to noncontrolling interests		0		0		0		0
Net income (loss) attributable to Acadia shareholders		4,970		3,061		9,972		5,996
Real estate at cost	[1]	0		0		0		0
Total assets	[1]	123,902		137,306		123,902		137,306
Cash paid for acquisition of real estate						0		0
Cash paid for development and property improvement costs						0		0
Unallocated
Segment Reporting Information [Line Items]
Total revenues		0		0		0		0
Depreciation and amortization		0		0		0		0
Property operating expenses and real estate taxes		0		0		0		0
General and administrative expenses		(10,643)		(10,661)		(20,589)		(22,598)
Impairment charges		0
Gain on disposition of properties		0		0				0
Operating income		(10,643)		(10,661)		(20,589)		(22,598)
Interest and other income		0		0		0		0
Realized and unrealized holding gains on investments and other		0		0		0		0
Equity in earnings of unconsolidated affiliates		0		0		0		0
Interest expense		0		0		0		0
Income tax provision		(165)		(209)		(288)		(24)
Net income (loss)		(10,808)		(10,870)		(20,877)		(22,622)
Net loss attributable to redeemable noncontrolling interests		0				0
Net loss (income) attributable to noncontrolling interests		0		0		0		0
Net income (loss) attributable to Acadia shareholders		(10,808)		(10,870)		(20,877)		(22,622)
Real estate at cost	[1]	0		0		0		0
Total assets	[1]	$ 0		$ 0		0		0
Cash paid for acquisition of real estate						0		0
Cash paid for development and property improvement costs						$ 0		$ 0

[1] Real estate at cost and total assets for the Funds segment include $672.7 million and $660.0 million, or $275.9 million and $270.7 million net of noncontrolling interests, related to Fund II’s City Point property at June 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: $1,525.2 million and $1,466.4 million of Operating real estate, net; $63.3 million and $129.9 million of Real estate under development; $108.0 million and $210.9 million of Investments in and advances to unconsolidated affiliates; $90.2 million and $98.7 million of Other assets, net; $2.3 million and $2.5 million of Right-of-use assets - operating leases, net; $12.0 million and $13.3 million of Cash and cash equivalents; $12.2 million and $15.0 million of Restricted cash; $17.7 million and $17.9 million of Rents receivable, net; $768.8 million and $761.2 million of Mortgage and other notes payable, net; $2.0 million and $51.2 million of Unsecured notes payable, net; $91.8 million and $95.4 million of Accounts payable and other liabilities; $2.4 million and $2.7 million of Lease liability- operating leases, net as of June 30, 2023 and December 31, 2022, respectively.