Segment Reporting - Summary of Segment Information (Details) - USD ($) $ in Thousands		3 Months Ended				6 Months Ended
		Jun. 30, 2024		Jun. 30, 2023		Jun. 30, 2024		Jun. 30, 2023		Dec. 31, 2023	[2]
Segment Reporting Information [Line Items]
Total revenues		$ 87,254		$ 89,948		$ 178,610		$ 171,787
Depreciation and amortization expenses		(34,281)		(34,056)		(69,221)		(67,229)
General and administrative expenses		(10,179)		(10,643)		(19,947)		(20,589)
Property operating expenses and real estate taxes		(25,762)		(25,591)		(57,204)		(52,203)
Gain (loss) on disposition of properties		757		0		(441)		0
Operating income		17,789		19,658		31,797		31,766
Equity in earnings of unconsolidated affiliates		4,480		(1,437)		4,168		(1,408)
Interest income		5,413		4,970		10,651		9,788
Realized and unrealized holding (losses) gains on investments and other		(2,364)		1,815		(4,415)		28,572
Interest expense		(23,581)		(22,089)		(47,290)		(43,676)
Income (loss) from continuing operations before income taxes		1,737		2,917		(5,089)		25,042
Income tax provision		(155)		(165)		(186)		(288)
Net income (loss)		1,582		2,752		(5,275)		24,754
Net loss attributable to redeemable noncontrolling interests		2,292		1,091		4,846		3,166
Net (income) loss attributable to noncontrolling interests		(2,431)		5,433		5,141		(5,284)
Net income attributable to Acadia shareholders		1,443		9,276		4,712		22,636
Real estate at cost	[1]	4,420,708		4,282,979		4,420,708		4,282,979
Total assets		4,251,038	[1],[2]	4,204,159	[1]	4,251,038	[1],[2]	4,204,159	[1]	$ 4,291,154
Cash paid for development and property improvement costs						37,412		30,570
Operating Segments | Core Portfolio
Segment Reporting Information [Line Items]
Total revenues		48,895		56,376		102,433		106,172
Depreciation and amortization expenses		(17,966)		(20,035)		(36,232)		(38,694)
General and administrative expenses		0		0		0		0
Property operating expenses and real estate taxes		(14,379)		(15,055)		(32,298)		(31,164)
Gain (loss) on disposition of properties		(2,213)				(2,213)
Operating income		14,337		21,286		31,690		36,314
Equity in earnings of unconsolidated affiliates		640		924		2,747		2,723
Interest income		0		0		0		0
Realized and unrealized holding (losses) gains on investments and other		(2,155)		1,815		(4,018)		3,393
Interest expense		(9,940)		(10,990)		(19,977)		(21,660)
Income (loss) from continuing operations before income taxes		2,882		13,035		10,442		20,770
Income tax provision		0		0		0		0
Net income (loss)		2,882		13,035		10,442		20,770
Net loss attributable to redeemable noncontrolling interests		0		0		0		0
Net (income) loss attributable to noncontrolling interests		(194)		(735)		(563)		(1,637)
Net income attributable to Acadia shareholders		2,688		12,300		9,879		19,133
Real estate at cost	[1]	2,616,224		2,613,206		2,616,224		2,613,206
Total assets	[1]	2,543,067		2,580,565		2,543,067		2,580,565
Cash paid for development and property improvement costs						29,023		15,560
Operating Segments | Investment Management
Segment Reporting Information [Line Items]
Total revenues		38,359		33,572		76,177		65,615
Depreciation and amortization expenses		(16,315)		(14,021)		(32,989)		(28,535)
General and administrative expenses		0		0		0		0
Property operating expenses and real estate taxes		(11,383)		(10,536)		(24,906)		(21,039)
Gain (loss) on disposition of properties		2,970				1,772
Operating income		13,631		9,015		20,054		16,041
Equity in earnings of unconsolidated affiliates		3,840		(2,361)		1,421		(4,131)
Interest income		0		0		0		0
Realized and unrealized holding (losses) gains on investments and other		0		0		0		24,995
Interest expense		(13,641)		(11,099)		(27,313)		(22,016)
Income (loss) from continuing operations before income taxes		3,830		(4,445)		(5,838)		14,889
Income tax provision		0		0		0		0
Net income (loss)		3,830		(4,445)		(5,838)		14,889
Net loss attributable to redeemable noncontrolling interests		2,292		1,091		4,846		3,166
Net (income) loss attributable to noncontrolling interests		(2,237)		6,168		5,704		(3,647)
Net income attributable to Acadia shareholders		3,885		2,814		4,712		14,408
Real estate at cost	[1]	1,804,484		1,669,773		1,804,484		1,669,773
Total assets	[1]	1,581,318		1,499,692		1,581,318		1,499,692
Cash paid for development and property improvement costs						8,389		15,010
Operating Segments | Structured Financing
Segment Reporting Information [Line Items]
Total revenues		0		0		0		0
Depreciation and amortization expenses		0		0		0		0
General and administrative expenses		0		0		0		0
Property operating expenses and real estate taxes		0		0		0		0
Gain (loss) on disposition of properties		0				0
Operating income		0		0		0		0
Equity in earnings of unconsolidated affiliates		0		0		0		0
Interest income		5,413		4,970		10,651		9,788
Realized and unrealized holding (losses) gains on investments and other		(209)		0		(397)		184
Interest expense		0		0		0		0
Income (loss) from continuing operations before income taxes		5,204		4,970		10,254		9,972
Income tax provision		0		0		0		0
Net income (loss)		5,204		4,970		10,254		9,972
Net loss attributable to redeemable noncontrolling interests		0		0		0		0
Net (income) loss attributable to noncontrolling interests		0		0		0		0
Net income attributable to Acadia shareholders		5,204		4,970		10,254		9,972
Real estate at cost	[1]	0		0		0		0
Total assets	[1]	126,653		123,902		126,653		123,902
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 expenses		0		0		0		0
General and administrative expenses		(10,179)		(10,643)		(19,947)		(20,589)
Property operating expenses and real estate taxes		0		0		0		0
Gain (loss) on disposition of properties		0				0
Operating income		(10,179)		(10,643)		(19,947)		(20,589)
Equity in earnings of unconsolidated affiliates		0		0		0		0
Interest income		0		0		0		0
Realized and unrealized holding (losses) gains on investments and other		0		0		0		0
Interest expense		0		0		0		0
Income (loss) from continuing operations before income taxes		(10,179)		(10,643)		(19,947)		(20,589)
Income tax provision		(155)		(165)		(186)		(288)
Net income (loss)		(10,334)		(10,808)		(20,133)		(20,877)
Net loss attributable to redeemable noncontrolling interests		0		0		0		0
Net (income) loss attributable to noncontrolling interests		0		0		0		0
Net income attributable to Acadia shareholders		(10,334)		(10,808)		(20,133)		(20,877)
Real estate at cost	[1]	0		0		0		0
Total assets	[1]	$ 0		$ 0		0		0
Cash paid for development and property improvement costs						$ 0		$ 0

[1] Total assets for the Investment Management segment include $549.3 million and $672.7 million related to Fund II’s City Point property as of June 30, 2024 and 2023, 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 Condensed Consolidated Balance Sheets include the following amounts related to our consolidated VIEs that are consolidated by the Operating Partnership: $1,654.5 million and $1,679.8 million of Operating real estate, net; $30.0 million and $28.9 million of Real estate under development; $91.1 million and $92.8 million of Investments in and advances to unconsolidated affiliates; $90.3 million and $101.7 million of Other assets, net; $2.2 million and $2.1 million of Right-of-use assets - operating leases, net; $20.7 million and $10.8 million of Cash and cash equivalents; $10.8 million and $7.0 million of Restricted cash; $23.9 million and $21.4 million of Rents receivable, net; $800.3 million and $764.6 million of Mortgage and other notes payable, net; $0.0 million and $80.5 million of Unsecured notes payable, net; $128.1 million and $127.2 million of Accounts payable and other liabilities; $2.3 million and $2.2 million of Lease liability- operating leases, net as of June 30, 2024 and December 31, 2023, respectively.