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Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

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Amount of Net Income (Loss) attributable to noncontrolling interest.

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Amount, after deduction of tax, noncontrolling interests, dividends on preferred stock and participating securities; of income (loss) available to common shareholders.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Segment Reporting - Summary of Segment Information (Parenthetical) (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Segment Reporting Information [Line Items]
Net income attributable to Acadia	$ 21,310	$ 10,458	$ 9,080	$ 12,197	$ 7,130	$ 9,225	$ 7,665	$ 7,419	$ 53,045	$ 31,439	$ 61,470
Real estate at cost	4,099,542				3,697,805				4,099,542	3,697,805
Total Assets	4,309,114				3,958,780				4,309,114	3,958,780
Net (income) loss attributable to noncontrolling interests	(6,645)	$ (1,618)	$ (14,317)	$ (9,261)	(13,801)	$ (11,822)	$ (9,935)	$ (11,579)	(31,841)	(47,137)	2,838
Funds \| Fund II's City Point Property
Segment Reporting Information [Line Items]
Real estate at cost	603,300								603,300
Total Assets	576,100								576,100
Net (income) loss attributable to noncontrolling interests									174,700	167,200
Operating Segments \| Core Portfolio
Segment Reporting Information [Line Items]
Net income attributable to Acadia									62,477	42,445	42,502
Real estate at cost	2,264,010				2,069,439				2,264,010	2,069,439
Total Assets	2,350,833				2,232,695				2,350,833	2,232,695
Net (income) loss attributable to noncontrolling interests									(337)	(752)	1,107
Operating Segments \| Core Portfolio \| Town Center
Segment Reporting Information [Line Items]
Net income attributable to Acadia									4,700	4,100	900
Operating Segments \| Funds
Segment Reporting Information [Line Items]
Net income attributable to Acadia									19,464	11,040	24,585
Real estate at cost	1,835,532				1,628,366				1,835,532	1,628,366
Total Assets	$ 1,843,338				$ 1,616,472				1,843,338	1,616,472
Net (income) loss attributable to noncontrolling interests									$ (31,504)	$ (46,385)	$ 1,731