XML 78 R56.htm IDEA: XBRL DOCUMENT v3.20.1

Investments in and Advances to Unconsolidated Affiliates - Fund Investments - Additional Information (Details)					3 Months Ended	12 Months Ended
	Aug. 21, 2019 USD ($) ft²	Jun. 29, 2019 USD ($)	Apr. 30, 2019 USD ($) ft²	Mar. 19, 2019 USD ($) ft²	Mar. 31, 2020 USD ($) property	Dec. 31, 2019 USD ($)	Dec. 31, 2014 property JointVenture	Oct. 31, 2018 segment
Schedule of Equity Method Investments [Line Items]
Purchase Price					$ 19,204,000	$ 324,339,000
Number of retail properties | property					188
Fund V Family Center at Riverdale
Schedule of Equity Method Investments [Line Items]
Equity method investment, ownership percentage					89.42%
Tri City Plaza
Schedule of Equity Method Investments [Line Items]
Equity method investment, ownership percentage					90.00%
Frederick County Acquisitions
Schedule of Equity Method Investments [Line Items]
Equity method investment, ownership percentage					90.00%
BSP I and BSP II
Schedule of Equity Method Investments [Line Items]
Equity method investment, ownership percentage							50.00%
Number of Joint Ventures | JointVenture							2
Broughton St. Portfolio Savannah, GA
Schedule of Equity Method Investments [Line Items]
Equity method investment, ownership percentage					50.00%
Number of businesses acquired | property							23
Number of retail properties | property					13
Fund I Vs Broughton Street Portfolio Venture
Schedule of Equity Method Investments [Line Items]
Number of retail properties | property							8
Fund IV | Disposed of by sale | Broughton St. Portfolio Savannah, GA
Schedule of Equity Method Investments [Line Items]
Number of retail properties | property							2
BSP I
Schedule of Equity Method Investments [Line Items]
Equity method investment, ownership percentage								100.00%
BSP I | Consolidated Entity
Schedule of Equity Method Investments [Line Items]
Number of retail properties | segment								11
BSP II | Unconsolidated Affiliates
Schedule of Equity Method Investments [Line Items]
Number of retail properties | property					2
Fund III's Storage Post venture
Schedule of Equity Method Investments [Line Items]
Distribution from cost method investment		$ 1,600,000
Cost method investments		0
Fund III's Storage Post venture | Partnership Interest
Schedule of Equity Method Investments [Line Items]
Distribution from cost method investment		$ 400,000
Riverdale, Utah | Fund V Family Center at Riverdale
Schedule of Equity Method Investments [Line Items]
Joint venture interest percentage				99.35%
Undivided interest in property percentage				90.00%
Square footage of real estate property (in square feet) | ft²				428,000
Purchase Price				$ 48,500,000
Vernon, Connecticut | Tri City Plaza
Schedule of Equity Method Investments [Line Items]
Joint venture interest percentage			90.00%
Square footage of real estate property (in square feet) | ft²			300,000
Purchase Price			$ 36,700,000
Frederick County, Maryland | Frederick County Acquisitions | 225,000 Square Foot Property
Schedule of Equity Method Investments [Line Items]
Joint venture interest percentage	90.00%
Square footage of real estate property (in square feet) | ft²	225,000
Purchase Price	$ 21,800,000
Frederick County, Maryland | Frederick County Acquisitions | 300,00 Square Foot Property
Schedule of Equity Method Investments [Line Items]
Joint venture interest percentage	90.00%
Square footage of real estate property (in square feet) | ft²	300,000
Purchase Price	$ 33,100,000

X

- Definition

Distribution from cost method investment.

+ References

No definition available.

+ Details

Name:	akr_DistributionFromCostMethodInvestment
Namespace Prefix:	akr_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Joint venture interest percentage.

+ References

No definition available.

+ Details

Name:	akr_JointVentureInterestPercentage
Namespace Prefix:	akr_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Number of joint ventures.

+ References

No definition available.

+ Details

Name:	akr_NumberOfJointVentures
Namespace Prefix:	akr_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Undivided interest in property percentage.

+ References

No definition available.

+ Details

Name:	akr_UndividedInterestInPropertyPercentage
Namespace Prefix:	akr_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Area of a real estate property.

+ References

No definition available.

+ Details

Name:	us-gaap_AreaOfRealEstateProperty
Namespace Prefix:	us-gaap_
Data Type:	num:areaItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 30
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=116859721&loc=d3e6613-128477

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 50
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e6927-128479

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 30
-Paragraph 7
-URI http://asc.fasb.org/extlink&oid=116859721&loc=d3e6578-128477

+ Details

Name:	us-gaap_BusinessCombinationConsiderationTransferred1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Amount, after adjustment, of cost-method investment. Adjustments include, but are not limited to, dividends received in excess of earnings after date of investment that are considered a return of investment and other than temporary impairments.

+ References

No definition available.

+ Details

Name:	us-gaap_CostMethodInvestments
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 323
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=114001798&loc=d3e33918-111571

+ Details

Name:	us-gaap_EquityMethodInvestmentOwnershipPercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

X

- Definition

The number of businesses acquired by the entity during the period.

+ References

No definition available.

+ Details

Name:	us-gaap_NumberOfBusinessesAcquired
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The number of real estate properties owned as of the balance sheet date.

+ References

No definition available.

+ Details

Name:	us-gaap_NumberOfRealEstateProperties
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

X

- Definition

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.

+ References

No definition available.

+ Details

Name:	us-gaap_ScheduleOfEquityMethodInvestmentsLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=akr_FundVFamilyCenterAtRiverdaleMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=akr_TriCityPlazaMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=akr_FrederickCountyAcquisitionsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=akr_BroughtonStreetPortfolioOneAndBroughtonStreetPortfolioTwoMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=akr_BroughtonStreetPortfolioMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=akr_FundIVsBroughtonStreetPortfolioVentureMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=akr_FundIVMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_DisposalGroupClassificationAxis=us-gaap_DiscontinuedOperationsDisposedOfBySaleMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis=akr_BroughtonStreetPortfolioMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=akr_BroughtonStreetPortfolioBSPISavannahGAMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_ConsolidatedEntitiesAxis=srt_AffiliatedEntityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=akr_BroughtonStreetPortfolioTwoMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=akr_UnconsolidatedAffiliatesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=akr_FundIIIsStoragePostVentureMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_ConsolidatedEntitiesAxis=srt_PartnershipInterestMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_StatementGeographicalAxis=stpr_UT
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_StatementGeographicalAxis=stpr_CT
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_StatementGeographicalAxis=stpr_MD
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=akr_TwoHundredAndTwentyFiveThousandSquareFootPropertyMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=akr_ThreeHundredThousandSquareFootPropertyMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: