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Real Estate Investments and Equity Method Investments - Other Real Estate Transactions (Details)																					12 Months Ended
	Aug. 31, 2023 USD ($)	Jan. 04, 2021 USD ($)	Oct. 02, 2020 USD ($)	Sep. 01, 2020 USD ($)	Aug. 31, 2020 USD ($)	May 29, 2020 USD ($) property	Mar. 20, 2020 USD ($)	Jan. 10, 2020 USD ($)	Oct. 25, 2019 USD ($)	Oct. 15, 2019	Sep. 12, 2019	Aug. 15, 2019 USD ($)	Apr. 01, 2019 USD ($)	Dec. 31, 2018 USD ($)	Dec. 20, 2018 USD ($)	Jul. 02, 2018 renewal_term	May 24, 2018 USD ($)	Apr. 02, 2018 USD ($)	Feb. 16, 2018 USD ($)	Jan. 29, 2018 USD ($)	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)	Jan. 18, 2018
Real Estate [Line Items]
Dispositions of real estate investments, net of selling costs																					$ 96,459,000	$ 32,944,000	$ 34,673,000
Payments to acquire interest in joint venture																					$ 1,078,000	$ 535,000	$ 10,420,000
Mixed-Use Development [Member]
Real Estate [Line Items]
Interest acquired			20.00%
Acquisition, assumption of debt			$ 1,500,000
Acquisition, cash consideration			$ 3,500,000
Primary Beneficiary \| Tryon Partners, LLC [Member]
Real Estate [Line Items]
Ownership percentage								80.00%
Payments for purchase of land								$ 6,300,000
Chesterfield, Virginia
Real Estate [Line Items]
Payments for purchase of land																				$ 2,400,000
Capitalized acquisition costs																				$ 100,000
Belmont, North Carolina [Member] \| Primary Beneficiary \| Chronicle Holdings, LLC [Member]
Real Estate [Line Items]
Ownership percentage											85.00%
Payments for purchase of land							$ 2,300,000
Gainesville, Georgia [Member]
Real Estate [Line Items]
Payments to acquire interest in joint venture					$ 5,000,000.0
Gainesville, Georgia [Member] \| Primary Beneficiary \| Gainesville Development, LLC [Member]
Real Estate [Line Items]
Ownership percentage					95.00%
Funding commitment					$ 17,300,000
Discontinued Operations, Disposed of by Sale
Real Estate [Line Items]
Gain (loss) on disposition of property						$ 2,800,000
Number of retail properties held-for-sale \| property						7
Disposal Group, Including Discontinued Operation, Consideration						$ 90,000,000.0
Chesterfield, Virginia \| Disposal Group, Disposed of by Sale, Not Discontinued Operations
Real Estate [Line Items]
Dispositions of real estate investments, net of selling costs															$ 25,900,000
Gain (Loss) on Sale of Properties															$ 3,400,000
Broad Creek Shopping Center \| Disposal Group, Disposed of by Sale, Not Discontinued Operations
Real Estate [Line Items]
Dispositions of real estate investments, net of selling costs														$ 2,400,000
Gain (Loss) on Sale of Properties														$ 800,000
Lightfoot Marketplace \| Lightfoot Marketplace \| Held-for-sale or Disposed of by Sale, Not Discontinued Operations
Real Estate [Line Items]
Dispositions of real estate investments, net of selling costs												$ 30,300,000
Gain (loss) on disposition of property												4,500,000
Waynesboro Commons \| Waynesboro Commons \| Held-for-sale or Disposed of by Sale, Not Discontinued Operations
Real Estate [Line Items]
Dispositions of real estate investments, net of selling costs													$ 1,100,000
Market At Mill Creek Partners, LLC
Real Estate [Line Items]
Payments for purchase of land																			$ 2,900,000
Capitalized acquisition costs																			$ 100,000
Percentage of ownership																								70.00%
Brooks Crossing
Real Estate [Line Items]
Payments for purchase of land																		$ 100,000
Indian Lakes Crossing \| Wawa Outparcel \| Disposal Group, Disposed of by Sale, Not Discontinued Operations
Real Estate [Line Items]
Dispositions of real estate investments, net of selling costs																	$ 4,400,000
Gain (loss) on disposition of property																	$ 0
Wills Wharf
Real Estate [Line Items]
Lease term																5 years
Number of renewal terms \| renewal_term																10
Extension term																7 years
Hanbury Village \| Discontinued Operations, Disposed of by Sale
Real Estate [Line Items]
Dispositions of real estate investments, net of selling costs				$ 7,000,000.0
Gain (loss) on disposition of property				$ 3,600,000
Subsequent Event \| Gainesville, Georgia [Member] \| Primary Beneficiary \| Gainesville Development, LLC [Member]
Real Estate [Line Items]
Interest acquired	5.00%
Purchase price	$ 4,200,000
Acquisition, assumption of debt	$ 3,800,000
Subsequent Event \| Hanbury Village \| Discontinued Operations, Disposed of by Sale
Real Estate [Line Items]
Dispositions of real estate investments, net of selling costs		$ 2,800,000
Gain (loss) on disposition of property		$ 2,400,000
Line of Credit \| Secured Debt \| Lightfoot Marketplace
Real Estate [Line Items]
Repayment of debt												$ 17,900,000
1023 Roswell, LLC \| Primary Beneficiary
Real Estate [Line Items]
Ownership percentage										80.00%
Funding commitment									$ 5,000,000.0
1023 Roswell, LLC \| Rosewell, Georgia
Real Estate [Line Items]
Payments for purchase of land									$ 5,000,000.0
Tryon Partners, LLC [Member]
Real Estate [Line Items]
Payments for purchase of land								$ 6,300,000
Chronicle Holdings, LLC [Member] \| Belmont, North Carolina [Member]
Real Estate [Line Items]
Payments for purchase of land							$ 2,300,000
Operating Partnership \| Revolving Credit Facility \| New Credit Facility
Real Estate [Line Items]
Repayments of Long-term Lines of Credit						61,900,000
Excess amount of disposal group consideration, after repayment of debt						$ 25,900,000