LIBOR floor.

No definition available.

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- Definition

LIBOR plus.

+ References

No definition available.

+ Details

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- Definition

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
-Paragraph 4
-Subparagraph (b)(1)
-URI http://asc.fasb.org/extlink&oid=120520924&loc=SL6031897-161870

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(16))
-URI http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910

Reference 3: 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=120391452&loc=d3e13212-122682

Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(16))
-URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878

+ Details

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Balance Type:	credit
Period Type:	instant

- 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

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Data Type:	xbrli:stringItemType
Balance Type:	na
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=120391452&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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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

+ Details

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

- Definition

The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

+ References

No definition available.

+ Details

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

- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

+ Details

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

- Definition

Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

+ References

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

This element represents the current portion of a long-term real estate loan to finance building costs. The funds are disbursed as needed or in accordance with a prearranged plan; generally, a portion of the funds is disbursed at inception and the remainder as construction progresses. The money is repaid on completion of the project (generally one to seven years), usually from the proceeds of a mortgage loan. The rate is normally higher than the prime rate, and there is usually an origination fee. The effective yield on these loans tends to be high, and the lender has a security interest in the real property.

+ References

+ Details

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Data Type:	xbrli:monetaryItemType
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Period Type:	instant

- Definition

The carrying value as of the balance sheet date of the noncurrent portion of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

+ 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=120391452&loc=d3e13212-122682

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 10
-Section 45
-Paragraph 14
-URI http://asc.fasb.org/extlink&oid=99376301&loc=d3e1336-112600

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 10
-Section 45
-Paragraph 13
-URI http://asc.fasb.org/extlink&oid=99376301&loc=d3e1314-112600

+ Details

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Balance Type:	credit
Period Type:	instant

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- Details

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- Details

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- Details

Name:	us-gaap_DebtInstrumentAxis=akr_ThreeHundredAndFiftyMillionsTermLoanMember
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- Details

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- Details

Name:	us-gaap_LongtermDebtTypeAxis=us-gaap_SecuredDebtMember
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Debt - Unsecured Notes Payable - Additional Information (Details) - USD ($)	Jul. 31, 2020	Mar. 31, 2021	Dec. 31, 2020
Debt Instrument [Line Items]
Long-term debt outstanding		$ 1,720,743,000	$ 1,770,054,000
Letters of credit, outstanding amount		33,800,000	35,600,000
Fund Portfolio \| Fund II
Debt Instrument [Line Items]
Long-term debt outstanding		229,101,000	228,282,000
Unsecured Debt \| Fund IV \| Letter of Credit
Debt Instrument [Line Items]
Letters of credit, outstanding amount		3,600,000	3,600,000
Unsecured Debt \| Core Portfolio
Debt Instrument [Line Items]
Long-term debt outstanding		380,000,000	380,000,000
Term Loan
Debt Instrument [Line Items]
Debt available balance		0	0
Term loan	$ 30,000,000.0	30,000,000.0	30,000,000.0
Debt instrument, maturity date	Jun. 30, 2021
LIBOR plus	2.55%
LIBOR floor	0.75%
Term Loan \| Maximum
Debt Instrument [Line Items]
Debt available balance	$ 90,000,000.0
Unsecured Notes Payable \| Unsecured Debt
Debt Instrument [Line Items]
Debt available balance		127,800,000	128,700,000
Unsecured Notes Payable \| Unsecured Debt \| Fund Portfolio \| Fund II
Debt Instrument [Line Items]
Long-term debt outstanding		40,000,000	40,000,000
Three Hundred And Fifty Millions Term Loan \| Unsecured Debt \| Core Portfolio
Debt Instrument [Line Items]
Long-term debt outstanding		350,000,000.0	350,000,000.0
Term Loan Maturing In September 2020 \| Secured Debt \| Fund II
Debt Instrument [Line Items]
Maximum borrowing capacity		40,000,000.0
Long-term line of credit, noncurrent		40,000,000.0	40,000,000.0
Remaining borrowing capacity		0	0
Subscription Line \| Unsecured Debt \| Fund IV
Debt Instrument [Line Items]
Maximum borrowing capacity		5,000,000.0
Long-term line of credit, noncurrent		1,400,000	900,000
Remaining borrowing capacity		0	500,000
Subscription Line \| Unsecured Debt \| Fund V
Debt Instrument [Line Items]
Maximum borrowing capacity		150,000,000.0
Subscription Line \| Unsecured Debt \| Fund V \| Letter of Credit
Debt Instrument [Line Items]
Letters of credit, outstanding amount		22,200,000	21,500,000
Subscription Line \| Unsecured Debt \| Fund Portfolio \| Fund V
Debt Instrument [Line Items]
Long-term debt outstanding		0	250,000
Remaining borrowing capacity		$ 127,800,000	$ 128,200,000