Annual base rent.

No definition available.

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Balance Type:	debit
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- Definition

LIBOR floor.

+ References

No definition available.

+ Details

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Period Type:	instant

- Definition

LIBOR plus.

+ References

No definition available.

+ Details

Name:	akr_LIBORPlus
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Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Number of rent concession agreements.

+ References

No definition available.

+ Details

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Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Number of rent concession agreements for rent deferral.

+ References

No definition available.

+ Details

Name:	akr_NumberOfRentConcessionAgreementsForRentDeferral
Namespace Prefix:	akr_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Number of rent concession agreements for rent forgiveness.

+ References

No definition available.

+ Details

Name:	akr_NumberOfRentConcessionAgreementsForRentForgiveness
Namespace Prefix:	akr_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage of annual base rent.

+ References

No definition available.

+ Details

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Namespace Prefix:	akr_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage of annualized base rents derived from stores open for business.

+ References

No definition available.

+ Details

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

- Definition

Percentage of collections and negotiated concessions of rents billed.

+ References

No definition available.

+ Details

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

- Definition

Percentage of rents collections.

+ References

No definition available.

+ Details

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

- Definition

Percentage of Rents collections without regard to negotiated concessions.

+ References

No definition available.

+ Details

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

- Definition

Rent concession aggregate amount.

+ References

No definition available.

+ Details

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

- Definition

Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(2))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (bbb)(2)
-URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258

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Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of unused borrowing capacity under the long-term financing arrangement that is available to the entity as of the balance sheet date.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(b))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Represents the number of stores.

+ References

No definition available.

+ Details

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Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

+ References

No definition available.

+ Details

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- Definition

Carrying value as of the balance sheet date of uncollateralized debt obligation (with maturities initially due after one year or beyond the operating cycle if longer), excluding current portion.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

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Subsequent Events - Additional Information (Details) $ in Millions			3 Months Ended	6 Months Ended
	Jul. 31, 2020 USD ($) Aqreement Store	Jun. 30, 2020 Aqreement	Jun. 30, 2020 Aqreement	Jun. 30, 2020
Subsequent Event [Line Items]
Core portfolio annualized base rents for stores of bankruptcies percentage				1.40%
COVID-19
Subsequent Event [Line Items]
Percentage of annualized base rents derived from stores open for business.		74.00%	74.00%	74.00%
Number of rent concession agreements		98	98
Number of rent concession agreements for rent deferral			92
Number of rent concession agreements for rent forgiveness			6
Subsequent Event \| Term Loans
Subsequent Event [Line Items]
Obtained unsecured Term Loan \| $	$ 30.0
Debt available balance \| $	$ 90.0
Debt instrument, maturity date	Jun. 30, 2021
LIBOR plus	2.55%
LIBOR floor	0.75%
Subsequent Event \| COVID-19
Subsequent Event [Line Items]
Percentage of annualized base rents derived from stores open for business.	88.00%
Percentage of Rents collections without regard to negotiated concessions	73.00%
Number of rent concession agreements	18
Number of rent concession agreements for rent deferral	10
Number of rent concession agreements for rent forgiveness	8
Rent concession aggregate amount \| $	$ 0.6
Subsequent Event \| COVID-19 \| Core Portfolio
Subsequent Event [Line Items]
Number of stores \| Store	16
Annual base rent amount \| $	$ 4.7
Core portfolio annualized base rents for stores of bankruptcies percentage	3.30%
Subsequent Event \| COVID-19 \| Fund Portfolio
Subsequent Event [Line Items]
Number of stores \| Store	24
Annual base rent amount \| $	$ 0.5
Core portfolio annualized base rents for stores of bankruptcies percentage	2.50%
Subsequent Event \| COVID-19 \| Minimum
Subsequent Event [Line Items]
Percentage of collections and negotiated concessions of rents billed.	83.00%
Percentage of Rents collections	62.00%
Subsequent Event \| COVID-19 \| April, May and June 2020 \| Minimum
Subsequent Event [Line Items]
Percentage of collections and negotiated concessions of rents billed.	86.00%
Subsequent Event \| COVID-19 \| July 2020 \| Minimum
Subsequent Event [Line Items]
Percentage of Rents collections	74.00%