XML 59 R48.htm IDEA: XBRL DOCUMENT
v3.7.0.1

Real Estate - Under Development and Construction in Progress (Details) $ in Thousands | 6 Months Ended |
--- | --- | ---
Jun. 30, 2017 USD ($) property | Dec. 31, 2016 USD ($) property
Property, Plant and Equipment [Line Items] |  |
Real estate under development | $ 208,966 | $ 543,486
Real estate in service | 2,957,544 | $ 2,551,448
Real estate under development, reclassification amount | 700 |
Depreciation and amortization expense related to building under development demolished, Write-offs | 2,000 |
City Point |  |
Property, Plant and Equipment [Line Items] |  |
Real estate in service | $ 432,600 |
Core Portfolio |  |
Property, Plant and Equipment [Line Items] |  |
Number of real estate properties | property | 2 |
Real estate development, capitalized costs | $ 300 |
Fund Portfolio |  |
Property, Plant and Equipment [Line Items] |  |
Real estate development, capitalized costs | $ 97,100 |
Fund II |  |
Property, Plant and Equipment [Line Items] |  |
Number of real estate properties | property | 1 | 2
Fund III |  |
Property, Plant and Equipment [Line Items] |  |
Number of real estate properties | property | 2 | 3
Fund IV |  |
Property, Plant and Equipment [Line Items] |  |
Number of real estate properties | property | 8 | 8

X
- Definition Depreciation and Amortization Expense, Write-offs + References No definition available. + Details
Name: | akr_DepreciationandAmortizationExpenseWriteoffs
Namespace Prefix: | akr_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Number of Real Estate Properties Under Development + References No definition available. + Details
Name: | akr_NumberOfRealEstatePropertiesUnderDevelopment
Namespace Prefix: | akr_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Real Estate Under Development, Reclassification Amount + References No definition available. + Details
Name: | akr_RealEstateUnderDevelopmentReclassificationAmount
Namespace Prefix: | akr_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The current amount of expenditures for a real estate project that has not yet been completed. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.10) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 + Details
Name: | us-gaap_DevelopmentInProcess
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
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_PropertyPlantAndEquipmentLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Carrying amount as of the balance sheet date of interest costs that were capitalized to properties under development during the land development and construction period of a project, and which are included in inventory. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6450988&loc=d3e26243-108391 + Details
Name: | us-gaap_RealEstateInventoryCapitalizedInterestCosts
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of real estate investment property, net of accumulated depreciation, which may include the following: (1) land available-for-sale; (2) land available-for-development; (3) investments in building and building improvements; (4) tenant allowances; (5) developments in-process; (6) rental properties; and (7) other real estate investments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.1(d)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 + Details
Name: | us-gaap_RealEstateInvestmentPropertyNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=akr_CityPointMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=akr_CorePortfolioMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=akr_FundPortfolioMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=akr_FundIiMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=akr_FundIiiMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=akr_FundIvMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |