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Debt - Mortgage Payable - Additional Information (Details)		3 Months Ended	12 Months Ended
	Oct. 30, 2020 USD ($)	Sep. 30, 2019 USD ($)	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($) Loan	Dec. 31, 2019 USD ($)	Dec. 31, 2012 USD ($)	Dec. 30, 2021	Sep. 30, 2021 USD ($)	Jun. 30, 2021 USD ($)	Mar. 31, 2021 USD ($)	Feb. 29, 2020 USD ($)	Dec. 31, 2018 USD ($)
Debt Instrument [Line Items]
Notes receivable, net			$ 153,886,000	$ 100,882,000	$ 114,943,000							$ 111,775,000
Maximum borrowing capacity			900,000,000.0
Repayments of debt				26,300,000
Gain on debt extinguishment			0	18,339,000	0
Canton Marketplace
Debt Instrument [Line Items]
Mortgage			31,800,000
Interest Rate Swaps
Debt Instrument [Line Items]
Derivative, notional amount			16,700,000	30,400,000							$ 50,000,000.0
Cash proceeds from swaps			3,400,000
Mortgages
Debt Instrument [Line Items]
Scheduled principal payment				6,100,000
Mortgages \| Canton Marketplace
Debt Instrument [Line Items]
Mortgage			$ 31,800,000
Debt instrument, maturity date			May 01, 2023
Interest rate, stated percentage			3.35%
Mortgages \| Monroe Marketplace [Member]
Debt Instrument [Line Items]
Mortgage			$ 29,200,000
Maturity date			Nov. 12, 2026
Mortgages \| Subscription Line
Debt Instrument [Line Items]
Notes receivable, net				$ 46,000,000.0						$ 37,700,000
Number of mortgage loans \| Loan				7
Mortgage Loan Principal Amount										$ 1,700,000
Mortgages \| Subscription Line 1
Debt Instrument [Line Items]
Notes receivable, net			$ 14,800,000	$ 51,300,000
Mortgage Loan Principal Amount			3,000,000.0					$ 10,200,000
Outstanding balance			64,200
Repayments of Debt			$ 59,200	79,200
Mortgages \| Subscription Line 2
Debt Instrument [Line Items]
Notes receivable, net				40,000,000.0					$ 125,700,000
Mortgage Loan Principal Amount									$ 6,500,000
Mortgages \| Subscription Line 3
Debt Instrument [Line Items]
Notes receivable, net								$ 53,100,000
Holdback mortgage loan outstanding				52,000,000.0
SOFR \| Mortgages \| Monroe Marketplace [Member]
Debt Instrument [Line Items]
Debt Instrument Basis Spread On Variable Rate1			2.76%
Fund II \| New Market Tax Credit
Debt Instrument [Line Items]
Percentage of tax credits on qualifying invested equity loans		39.00%
Transfer of tax credit transactions to investors exchange amount						$ 5,200,000
Redemption of loan expiration period			7 years
Fund II \| Realized and Unrealized Holding Gains on Investments and Other \| New Market Tax Credit
Debt Instrument [Line Items]
Income recognized from tax credit transactions			$ 5,000,000.0		$ 1,400,000
Fund II \| City Point Project \| New Market Tax Credit
Debt Instrument [Line Items]
Income recognized from tax credit transactions		$ 5,000,000.0
Fund II \| Mortgages
Debt Instrument [Line Items]
Notes receivable, net				200,000,000.0
Maturity date			Aug. 11, 2022
Short-term Debt, Refinanced, Amount			$ 18,500,000
Loans Payable			$ 16,800,000
Fund II \| LIBOR \| Mortgages
Debt Instrument [Line Items]
Debt Instrument Basis Spread On Variable Rate1			2.75%
Fund IV
Debt Instrument [Line Items]
Repayments of debt			$ 23,500,000
Scheduled principal payment			$ 8,600,000
Fund IV \| Bridge facility
Debt Instrument [Line Items]
LIBOR plus			2.50%				2.00%
LIBOR floor			0.25%
Fund IV \| Mortgages
Debt Instrument [Line Items]
Holdback mortgage loan				67,400,000
Fund loans repaid				8,000,000.0
Fund IV \| Mortgages One
Debt Instrument [Line Items]
Repayments of debt				$ 11,600,000
Core Portfolio
Debt Instrument [Line Items]
Derivative, notional amount			$ 539,369,000
Core Portfolio \| Disposed of by sale
Debt Instrument [Line Items]
Repayments of debt			$ 6,700,000
Core Portfolio \| Mortgages \| Brandywine Portfolio
Debt Instrument [Line Items]
Gain (loss) on litigation settlement	$ 30,000,000.0
Acquisition of noncontrolling interest	15,900,000
Core Portfolio \| Mortgages \| Brandywine Portfolio \| Realized and Unrealized Holding Gains on Investments and Other
Debt Instrument [Line Items]
Proportionate share	4,100,000
Gain on debt extinguishment	$ 18,300,000
Core Portfolio \| Mortgages \| Brandywine Portfolio \| Acadia's OP Ownership
Debt Instrument [Line Items]
Equity interest held by Operating Partnership	78.22%