XML 76 R58.htm IDEA: XBRL DOCUMENT
v3.8.0.1

Investments in and Advances to Unconsolidated Affiliates - Core Portfolio (Details) $ in Thousands |  |  |  | 1 Months Ended | 3 Months Ended | 12 Months Ended |
--- | --- | --- | --- | --- | --- | --- | ---
Nov. 16, 2017 USD ($) | May 01, 2017 USD ($) | Jan. 04, 2017 USD ($) ft² | Apr. 29, 2016 USD ($) | Dec. 31, 2017 USD ($) ft² | Dec. 31, 2017 USD ($) ft² property | Dec. 31, 2016 USD ($) | Dec. 31, 2015 USD ($) | Mar. 31, 2016
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |
Equity method investment, ownership percentage |  |  |  |  |  |  |  |  | 65.00%
Purchase Price |  |  |  |  |  | $ 254,532 | $ 756,842 |  |
Notes receivable, net |  |  |  |  | $ 153,829 | 153,829 | 276,163 |  |
Gain on change in control and other |  |  |  |  | 5,600 | 5,571 | 0 | $ 1,596 |
Core Portfolio |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |
Purchase Price |  |  |  |  |  | 42,800 | 519,592 |  |
Notes receivable, net |  |  |  |  | 101,695 | 101,695 | 216,400 |  |
Equity method investments |  |  |  |  | $ 216,583 | $ 216,583 | 165,031 |  |
Core Portfolio | Crossroads |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |
Equity method investment, ownership percentage |  |  |  |  | 49.00% | 49.00% |  |  |
Square footage of real estate property (in square feet) | ft² |  |  |  |  | 311,000 | 311,000 |  |  |
Core Portfolio | Georgetown Portfolio |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |
Equity method investment, ownership percentage |  |  |  |  | 50.00% | 50.00% |  |  |
Square footage of real estate property (in square feet) | ft² |  |  |  |  | 28,000 | 28,000 |  |  |
Equity method investments |  |  |  |  | $ 3,479 | $ 3,479 | 4,287 |  |
Core Portfolio | Gotham Plaza |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |
Equity method investment, ownership percentage |  |  |  |  | 49.00% | 49.00% |  |  |
Square footage of real estate property (in square feet) | ft² |  |  |  |  | 123,000 | 123,000 |  |  |
Percentage of voting interests acquired |  |  |  |  | 49.00% | 49.00% |  |  |
Equity method investments |  |  |  |  | $ 29,416 | $ 29,416 | 29,421 |  |
Core Portfolio | Renaissance Portfolio |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |
Equity method investment, ownership percentage |  |  |  |  | 20.00% | 20.00% |  |  |
Square footage of real estate property (in square feet) | ft² |  |  |  |  | 213,000 | 213,000 |  |  |
Percentage of voting interests acquired |  |  | 20.00% |  |  |  |  |  |
Number of businesses acquired | property |  |  |  |  |  | 18 |  |  |
Equity method investments |  |  |  |  | $ 35,041 | $ 35,041 | $ 36,437 |  |
Core Portfolio | Brandywine Portfolio |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |
Square footage of real estate property (in square feet) | ft² |  |  |  |  | 1,000,000 | 1,000,000 |  |  |
Repayments of debt |  |  |  | $ 140,000 |  |  |  |  |
Note receivable exchanged |  | $ 16,000 |  |  |  |  |  |  |
Notes receivable, net |  | 153,400 |  |  | $ 60,700 | $ 60,700 |  |  |
Note receivable accrued interest |  | $ 300 |  |  |  |  |  |  |
Core Portfolio | Town Center |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |
Equity method investment, ownership percentage | 22.22% |  |  |  | 61.11% | 61.11% |  |  |
Equity method investment, ownership percentage by third party | 38.89% |  |  |  | 38.89% | 38.89% |  |  |
Equity method investments | $ 61,600 |  |  |  |  |  |  |  |
Gain on equity method investment | $ 34,500 |  |  |  |  |  |  |  |
Core Portfolio | Market Square |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |
Equity method investment, ownership percentage | 22.22% | 61.11% |  |  |  |  |  |  |
Equity method investment, ownership percentage by third party | 38.89% | 38.89% |  |  |  |  |  |  |
Equity method investments |  | $ 16,300 |  |  |  |  |  |  |
Gain on equity method investment |  | $ 9,800 |  |  |  |  |  |  |
Core Portfolio | Chicago, IL |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |
Equity method investment, ownership percentage |  |  |  |  | 88.43% | 88.43% |  |  |
Square footage of real estate property (in square feet) | ft² |  |  |  |  | 87,000 | 87,000 |  |  |
Core Portfolio | Alexandria, Virginia | Renaissance Portfolio |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |
Square footage of real estate property (in square feet) | ft² |  |  | 6,200 |  |  |  |  |  |
Purchase Price |  |  | $ 3,000 |  |  |  |  |  |
Number of businesses acquired | property |  |  |  |  |  | 2 |  |  |
Core Portfolio | Washington D.C. | Renaissance Portfolio |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |
Number of businesses acquired | property |  |  |  |  |  | 16 |  |  |
Exchange Transaction One | Core Portfolio | Brandywine Portfolio |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |
Note receivable exchanged | $ 16,000 |  |  |  |  |  |  |  |
Note receivable accrued interest | 600 |  |  |  |  |  |  |  |
Exchange Transaction Two | Core Portfolio | Brandywine Portfolio |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |
Note receivable exchanged | 60,700 |  |  |  |  |  |  |  |
Note receivable accrued interest | $ 900 |  |  |  |  |  |  |  |

X
- Definition Equity Method Investment, Ownership Percentage by Third Party + References No definition available. + Details
Name: | akr_EquityMethodInvestmentOwnershipPercentageByThirdParty
Namespace Prefix: | akr_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Gain (Loss) Change In Control And Other + References No definition available. + Details
Name: | akr_GainLossChangeInControlAndOther
Namespace Prefix: | akr_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Mortgage Loans On Real Estate, Accrued Interest + References No definition available. + Details
Name: | akr_MortgageLoansOnRealEstateAccruedInterest
Namespace Prefix: | akr_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Area of a real estate property. + References No definition available. + Details
Name: | us-gaap_AreaOfRealEstateProperty
Namespace Prefix: | us-gaap_
Data Type: | num:areaItemType
Balance Type: | na
Period Type: | instant

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=79982066&loc=d3e1392-128463 + Details
Name: | us-gaap_BusinessAcquisitionPercentageOfVotingInterestsAcquired
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

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
- Definition The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=66011266&loc=d3e33918-111571 + Details
Name: | us-gaap_EquityMethodInvestmentOwnershipPercentage
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Amount of gain (loss) on sale or disposal of an equity method investment. + References No definition available. + Details
Name: | us-gaap_EquityMethodInvestmentRealizedGainLossOnDisposal
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=66022249&loc=d3e33749-111570 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.12) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_EquityMethodInvestments
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The carrying amount of the outstanding balance due under the mortgage loan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 10 -Section S99 -Paragraph 6 -Subparagraph (SX 210.5-04.(c) Schedule IV) -URI http://asc.fasb.org/extlink&oid=27047687&loc=d3e5864-122674 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 948 -SubTopic 310 -Section S99 -Paragraph 1 -Subparagraph (SX 210.12-29) -URI http://asc.fasb.org/extlink&oid=6589523&loc=d3e617274-123014 + Details
Name: | us-gaap_MortgageLoansOnRealEstateCarryingAmountOfMortgages
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The carrying amount of mortgage loans on real estate that were sold during the reporting period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 10 -Section S99 -Paragraph 6 -Subparagraph (SX 210.5-04.(c) Schedule IV) -URI http://asc.fasb.org/extlink&oid=27047687&loc=d3e5864-122674 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 948 -SubTopic 310 -Section S99 -Paragraph 1 -Subparagraph (SX 210.12-29.6) -URI http://asc.fasb.org/extlink&oid=6589523&loc=d3e617274-123014 + Details
Name: | us-gaap_MortgageLoansOnRealEstateCostOfMortgagesSold
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The number of businesses acquired by the entity during the period. + References No definition available. + Details
Name: | us-gaap_NumberOfBusinessesAcquired
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition The cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3291-108585 + Details
Name: | us-gaap_RepaymentsOfLongTermDebt
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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_ScheduleOfEquityMethodInvestmentsLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
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_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=akr_CrossroadsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

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

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

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

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

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

X
- Details
Name: | invest_InvestmentGeographicRegionAxis=akr_WashingtonD.C.Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | akr_ExchangeTransactionAxis=akr_ExchangeTransactionOneMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | akr_ExchangeTransactionAxis=akr_ExchangeTransactionTwoMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |