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DEFERRED CHARGES (Details) (USD $) In Thousands, unless otherwise specified | Dec. 31, 2014 | Dec. 31, 2013
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Deferred Costs [Abstract] |  |
Deferred financing costs | $ 39,660 us-gaap_DeferredFinanceCostsGross | $ 36,481 us-gaap_DeferredFinanceCostsGross
Deferred leasing and other costs | 37,275 akr_DeferredLeasingAndOtherCosts | 33,664 akr_DeferredLeasingAndOtherCosts
Deferred costs, gross | 76,935 akr_DeferredCostsGross | 70,145 akr_DeferredCostsGross
Accumulated amortization | (46,256)akr_DeferredCostsAccumulatedAmortization | (39,370)akr_DeferredCostsAccumulatedAmortization
Total | $ 30,679 us-gaap_DeferredCostsCurrentAndNoncurrent | $ 30,775 us-gaap_DeferredCostsCurrentAndNoncurrent

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- Definition Deferred Costs, Accumulated Amortization + References No definition available. + Details
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Namespace Prefix: | akr_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Deferred Costs, Gross + References No definition available. + Details
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Namespace Prefix: | akr_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
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- Definition Deferred Leasing and Other Costs + References No definition available. + Details
Name: | akr_DeferredLeasingAndOtherCosts
Namespace Prefix: | akr_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition The carrying amount of deferred costs. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
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- Definition For an unclassified balance sheet, the amount as of the balance sheet date of capitalized costs associated with the issuance of debt instruments (for example, legal, accounting, underwriting, printing, and registration costs) that will be charged against earnings over the life of the debt instruments to which such costs pertain. Such amount is before the consideration of accumulated amortization. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28555-108399 + Details
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