XML 54 R43.htm IDEA: XBRL DOCUMENT
v3.7.0.1

Real Estate - Acquisitions (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2017 | Mar. 31, 2016 | Dec. 31, 2016
Business Acquisition [Line Items] |  |  |
Purchase Price | $ 35,350 |  | $ 558,755
Liabilities assumed | 663 |  | 0
Acquisition related costs | 300 | $ 300 | 300
Purchase Price Allocation |  |  |
Land | 7,149 |  | 225,729
Buildings and improvements | 22,201 |  | 458,525
Other assets | 0 |  | 3,481
Acquisition-related intangible assets (in Acquired lease intangibles, net) | 7,444 |  | 63,606
Acquisition-related intangible liabilities (in Acquired lease intangibles, net) | (1,444) |  | (72,985)
Above and below market debt assumed (included in Mortgages and other notes payable, net) | 0 |  | (119,601)
Net assets acquired | 35,350 |  | 558,755
Consideration: |  |  |
Cash | 34,687 |  | 677,964
Debt assumed | 0 |  | (119,209)
Liabilities assumed | 663 |  | 0
Purchase Price | 35,350 |  | $ 558,755
Core Portfolio [Member] |  |  |
Business Acquisition [Line Items] |  |  |
Acquisition related costs | 200 | 200 |
Fund III and IV [Member] |  |  |
Business Acquisition [Line Items] |  |  |
Acquisition related costs | 100 | $ 100 |
Acquisitions in 2016 [Member] |  |  |
Business Acquisition [Line Items] |  |  |
Purchase Price | 756,842 |  |
Liabilities assumed | 120,672 |  |
Consideration: |  |  |
Liabilities assumed | 120,672 |  |
Purchase Price | 756,842 |  |
Acquisitions in 2016 [Member] | Fund IV [Member] |  |  |
Business Acquisition [Line Items] |  |  |
Purchase Price | 237,250 |  |
Liabilities assumed | 1,463 |  |
Consideration: |  |  |
Liabilities assumed | 1,463 |  |
Purchase Price | 237,250 |  |
Acquisitions in 2016 [Member] | Core Portfolio [Member] |  |  |
Business Acquisition [Line Items] |  |  |
Purchase Price | 519,592 |  |
Liabilities assumed | 119,209 |  |
Consideration: |  |  |
Liabilities assumed | 119,209 |  |
Purchase Price | $ 519,592 |  |
Lincoln Park Centre [Member] | Fairview Heights, IL [Member] | Fund IV [Member] |  |  |
Business Acquisition [Line Items] |  |  |
Percent Acquired | 100.00% |  |
Purchase Price | $ 35,350 |  |
Liabilities assumed | 0 |  |
Consideration: |  |  |
Liabilities assumed | 0 |  |
Purchase Price | 35,350 |  |
Business Acquisition 2017 [Member] | Fund IV [Member] |  |  |
Business Acquisition [Line Items] |  |  |
Purchase Price | 35,350 |  |
Liabilities assumed | 0 |  |
Consideration: |  |  |
Liabilities assumed | 0 |  |
Purchase Price | $ 35,350 |  |
991 Madison Avenue [Member] | New York, New York [Member] | Core Portfolio [Member] |  |  |
Business Acquisition [Line Items] |  |  |
Percent Acquired | 100.00% |  |
Purchase Price | $ 76,628 |  |
Liabilities assumed | 0 |  |
Consideration: |  |  |
Liabilities assumed | 0 |  |
Purchase Price | $ 76,628 |  |
165 Newbury Street [Member] | Boston, Massachusetts [Member] | Core Portfolio [Member] |  |  |
Business Acquisition [Line Items] |  |  |
Percent Acquired | 100.00% |  |
Purchase Price | $ 6,250 |  |
Liabilities assumed | 0 |  |
Consideration: |  |  |
Liabilities assumed | 0 |  |
Purchase Price | $ 6,250 |  |
Concord and Milwaukee [Member] | Chicago, Illinois [Member] | Core Portfolio [Member] |  |  |
Business Acquisition [Line Items] |  |  |
Percent Acquired | 100.00% |  |
Purchase Price | $ 6,000 |  |
Liabilities assumed | 2,902 |  |
Consideration: |  |  |
Liabilities assumed | 2,902 |  |
Purchase Price | $ 6,000 |  |
151 North State Street [Member] | Chicago, Illinois [Member] | Core Portfolio [Member] |  |  |
Business Acquisition [Line Items] |  |  |
Percent Acquired | 100.00% |  |
Purchase Price | $ 30,500 |  |
Liabilities assumed | 14,556 |  |
Consideration: |  |  |
Liabilities assumed | 14,556 |  |
Purchase Price | $ 30,500 |  |
State and Washington [Member] | Chicago, Illinois [Member] | Core Portfolio [Member] |  |  |
Business Acquisition [Line Items] |  |  |
Percent Acquired | 100.00% |  |
Purchase Price | $ 70,250 |  |
Liabilities assumed | 25,650 |  |
Consideration: |  |  |
Liabilities assumed | 25,650 |  |
Purchase Price | $ 70,250 |  |
North & Kingsbury [Member] | Chicago, Illinois [Member] | Core Portfolio [Member] |  |  |
Business Acquisition [Line Items] |  |  |
Percent Acquired | 100.00% |  |
Purchase Price | $ 34,000 |  |
Liabilities assumed | 13,409 |  |
Consideration: |  |  |
Liabilities assumed | 13,409 |  |
Purchase Price | $ 34,000 |  |
Sullivan Center [Member] | Chicago, Illinois [Member] | Core Portfolio [Member] |  |  |
Business Acquisition [Line Items] |  |  |
Percent Acquired | 100.00% |  |
Purchase Price | $ 146,939 |  |
Liabilities assumed | 0 |  |
Consideration: |  |  |
Liabilities assumed | 0 |  |
Purchase Price | $ 146,939 |  |
California and Armitage [Member] | Chicago, Illinois [Member] | Core Portfolio [Member] |  |  |
Business Acquisition [Line Items] |  |  |
Percent Acquired | 100.00% |  |
Purchase Price | $ 9,250 |  |
Liabilities assumed | 2,692 |  |
Consideration: |  |  |
Liabilities assumed | 2,692 |  |
Purchase Price | $ 9,250 |  |
555 9th Avenue [Member] | San Francisco, California [Member] | Core Portfolio [Member] |  |  |
Business Acquisition [Line Items] |  |  |
Percent Acquired | 100.00% |  |
Purchase Price | $ 139,775 |  |
Liabilities assumed | 60,000 |  |
Consideration: |  |  |
Liabilities assumed | 60,000 |  |
Purchase Price | $ 139,775 |  |
Restaurant at Fort Point [Member] | Boston, Massachusetts [Member] | Fund IV [Member] |  |  |
Business Acquisition [Line Items] |  |  |
Percent Acquired | 100.00% |  |
Purchase Price | $ 11,500 |  |
Liabilities assumed | 0 |  |
Consideration: |  |  |
Liabilities assumed | 0 |  |
Purchase Price | $ 11,500 |  |
1964 Union Street [Member] | San Francisco, California [Member] | Fund IV [Member] |  |  |
Business Acquisition [Line Items] |  |  |
Percent Acquired | 90.00% |  |
Purchase Price | $ 2,250 |  |
Liabilities assumed | 1,463 |  |
Consideration: |  |  |
Liabilities assumed | 1,463 |  |
Purchase Price | $ 2,250 |  |
Wake Forest Crossing [Member] | Wake Forest, NC [Member] | Fund IV [Member] |  |  |
Business Acquisition [Line Items] |  |  |
Percent Acquired | 100.00% |  |
Purchase Price | $ 36,600 |  |
Liabilities assumed | 0 |  |
Consideration: |  |  |
Liabilities assumed | 0 |  |
Purchase Price | $ 36,600 |  |
Airport Mall [Member] | Bangor, ME [Member] | Fund IV [Member] |  |  |
Business Acquisition [Line Items] |  |  |
Percent Acquired | 100.00% |  |
Purchase Price | $ 10,250 |  |
Liabilities assumed | 0 |  |
Consideration: |  |  |
Liabilities assumed | 0 |  |
Purchase Price | $ 10,250 |  |
Colonie Plaza [Member] | Albany, NY [Member] | Fund IV [Member] |  |  |
Business Acquisition [Line Items] |  |  |
Percent Acquired | 100.00% |  |
Purchase Price | $ 15,000 |  |
Liabilities assumed | 0 |  |
Consideration: |  |  |
Liabilities assumed | 0 |  |
Purchase Price | $ 15,000 |  |
Dauphin Plaza [Member] | Harrisburg, PA [Member] | Fund IV [Member] |  |  |
Business Acquisition [Line Items] |  |  |
Percent Acquired | 100.00% |  |
Purchase Price | $ 16,000 |  |
Liabilities assumed | 0 |  |
Consideration: |  |  |
Liabilities assumed | 0 |  |
Purchase Price | $ 16,000 |  |
JFK Plaza [Member] | Waterville, ME [Member] | Fund IV [Member] |  |  |
Business Acquisition [Line Items] |  |  |
Percent Acquired | 100.00% |  |
Purchase Price | $ 6,500 |  |
Liabilities assumed | 0 |  |
Consideration: |  |  |
Liabilities assumed | 0 |  |
Purchase Price | $ 6,500 |  |
Mayfair Shopping Center [Member] | Philadelphia, PA [Member] | Fund IV [Member] |  |  |
Business Acquisition [Line Items] |  |  |
Percent Acquired | 100.00% |  |
Purchase Price | $ 16,600 |  |
Liabilities assumed | 0 |  |
Consideration: |  |  |
Liabilities assumed | 0 |  |
Purchase Price | $ 16,600 |  |
Shaw's Plaza [Member] | Waterville, ME [Member] | Fund IV [Member] |  |  |
Business Acquisition [Line Items] |  |  |
Percent Acquired | 100.00% |  |
Purchase Price | $ 13,800 |  |
Liabilities assumed | 0 |  |
Consideration: |  |  |
Liabilities assumed | 0 |  |
Purchase Price | $ 13,800 |  |
Wells Plaza [Member] | Wells, ME [Member] | Fund IV [Member] |  |  |
Business Acquisition [Line Items] |  |  |
Percent Acquired | 100.00% |  |
Purchase Price | $ 5,250 |  |
Liabilities assumed | 0 |  |
Consideration: |  |  |
Liabilities assumed | 0 |  |
Purchase Price | $ 5,250 |  |
717 N Michigan [Member] | Chicago, Illinois [Member] | Fund IV [Member] |  |  |
Business Acquisition [Line Items] |  |  |
Percent Acquired | 100.00% |  |
Purchase Price | $ 103,500 |  |
Liabilities assumed | 0 |  |
Consideration: |  |  |
Liabilities assumed | 0 |  |
Purchase Price | $ 103,500 |  |

X
- Definition Business Combination, Consideration Transferred, Debt Assumed + References No definition available. + Details
Name: | akr_BusinessCombinationConsiderationTransferredDebtAssumed
Namespace Prefix: | akr_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Buildings and Improvements + References No definition available. + Details
Name: | akr_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedBuildingsAndImprovements
Namespace Prefix: | akr_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets + References No definition available. + Details
Name: | akr_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssets
Namespace Prefix: | akr_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Liabilities + References No definition available. + Details
Name: | akr_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleLiabilities
Namespace Prefix: | akr_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Other Assets and Gain on Bargain Purchase + References No definition available. + Details
Name: | akr_BusinessCombinationRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumedOtherAssetsandGainonBargainPurchase
Namespace Prefix: | akr_
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_BusinessAcquisitionLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Percentage of voting equity interests acquired at the acquisition date in the business combination. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=65885119&loc=d3e1392-128463 + Details
Name: | us-gaap_BusinessAcquisitionPercentageOfVotingInterestsAcquired
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 25 -Paragraph 23 -URI http://asc.fasb.org/extlink&oid=73531572&loc=d3e1043-128460 + Details
Name: | us-gaap_BusinessCombinationAcquisitionRelatedCosts
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 30 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=6911251&loc=d3e6578-128477 Reference 2: http://www.xbrl.org/2003/role/presentationRef -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://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 30 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=6911251&loc=d3e6613-128477 + Details
Name: | us-gaap_BusinessCombinationConsiderationTransferred1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_BusinessCombinationConsiderationTransferredAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of liabilities incurred by the acquirer as part of consideration transferred in a business combination. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 25 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=6911189&loc=d3e6405-128476 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 30 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=6911251&loc=d3e6578-128477 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 30 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=6911251&loc=d3e6613-128477 + Details
Name: | us-gaap_BusinessCombinationConsiderationTransferredLiabilitiesIncurred
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of real estate acquired, at the acquisition date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=73530397&loc=d3e4845-128472 + Details
Name: | us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLand
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount recognized as of the acquisition date for the identifiable assets acquired in excess of (less than) the aggregate liabilities assumed. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 55 -Paragraph 37 -URI http://asc.fasb.org/extlink&oid=73531372&loc=d3e2207-128464 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=73530397&loc=d3e4845-128472 + Details
Name: | us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of liabilities due after one year or the normal operating cycle, if longer, assumed at the acquisition date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=73530397&loc=d3e4845-128472 + Details
Name: | us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilities
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- References No definition available. + Details
Name: | us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNetAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Investing Activities -URI http://asc.fasb.org/extlink&oid=6516133 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3213-108585 + Details
Name: | us-gaap_PaymentsToAcquireBusinessesGross
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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

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

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=akr_Acquisitionsin2016Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=akr_LincolnParkCentreMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | invest_InvestmentGeographicRegionAxis=akr_FairviewHeightsILMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=akr_BusinessAcquisition2017Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=akr_A991MadisonAvenueMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | invest_InvestmentGeographicRegionAxis=akr_NewYorkNewYorkMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=akr_A165NewburyStreetMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | invest_InvestmentGeographicRegionAxis=akr_BostonMassachusettsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=akr_ConcordandMilwaukeeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | invest_InvestmentGeographicRegionAxis=akr_ChicagoIllinoisMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=akr_A151NorthStateStreetMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=akr_StateandWashingtonMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=akr_NorthKingsburyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=akr_SullivanCenterMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=akr_CaliforniaandArmitageMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=akr_A5559thAvenueMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | invest_InvestmentGeographicRegionAxis=akr_SanFranciscoCaliforniaMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=akr_RestaurantatFortPointMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=akr_A1964UnionStreetMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=akr_WakeForestCrossingMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | invest_InvestmentGeographicRegionAxis=akr_WakeForestNCMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=akr_AirportMallMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | invest_InvestmentGeographicRegionAxis=akr_BangorMEMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=akr_ColoniePlazaMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | invest_InvestmentGeographicRegionAxis=akr_AlbanyNYMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=akr_DauphinPlazaMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | invest_InvestmentGeographicRegionAxis=akr_HarrisburgPAMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=akr_JFKPlazaMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | invest_InvestmentGeographicRegionAxis=akr_WatervilleMEMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=akr_MayfairShoppingCenterMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | invest_InvestmentGeographicRegionAxis=akr_PhiladelphiaPAMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=akr_ShawsPlazaMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=akr_WellsPlazaMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | invest_InvestmentGeographicRegionAxis=akr_WellsMEMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=akr_A717NMichiganMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |