XML 90 R64.htm IDEA: XBRL DOCUMENT
v2.4.1.9

MORTGAGES AND OTHER NOTES PAYABLE Mortgage Loan Activity (Details) (USD $) | 12 Months Ended | 1 Months Ended |  |
--- | --- | --- | --- | ---
Dec. 31, 2014 property | Dec. 31, 2014 | Apr. 30, 2014 | Feb. 28, 2014 | Jan. 31, 2014 | Mar. 31, 2014 | May 31, 2014 | Jun. 30, 2014 | Oct. 31, 2014 | Dec. 31, 2013 | Jul. 31, 2014
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Mortgages and other notes payable | $ 1,127,600,000 us-gaap_DebtInstrumentCarryingAmount |  | 1,127,600,000 us-gaap_DebtInstrumentCarryingAmount |  |  |  |  |  |  |  |  | $ 1,038,100,000 us-gaap_DebtInstrumentCarryingAmount |
Number of properties collateralized | 40 akr_NumberOfPropertiesCollateralized |  | 40 akr_NumberOfPropertiesCollateralized |  |  |  |  |  |  |  |  |  |
Interest rate, minimum | 1.00%us-gaap_DebtInstrumentInterestRateEffectivePercentageRateRangeMinimum |  |  |  |  |  |  |  |  |  |  |  |
Interest rate, maximum | 6.65%us-gaap_DebtInstrumentInterestRateEffectivePercentageRateRangeMaximum |  |  |  |  |  |  |  |  |  |  |  |
LIBOR [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Borrowings, interest rate description |  |  | LIBOR |  | LIBOR | LIBOR |  |  |  |  |  |  |
Mortgages [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Borrowings, amount | 301,188,000 us-gaap_DebtInstrumentFaceAmount / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember |  | 301,188,000 us-gaap_DebtInstrumentFaceAmount / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember |  |  |  |  |  |  |  |  |  |
Repayments of debt | 86,100,000 us-gaap_RepaymentsOfLongTermDebt / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember |  |  |  |  |  |  |  |  |  |  |  |
Mortgages [Member] | 664 N. Michigan [Member] | LIBOR plus 1.65% Mortgage Note [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Borrowings, amount |  |  |  |  |  |  | 45,000,000 us-gaap_DebtInstrumentFaceAmount / us-gaap_DebtInstrumentAxis = akr_LIBORPlusOnePointSixFivePercentMortgageNoteMember / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = akr_SixSixFourNorthMichiganMember |  |  |  |  |  |
Mortgages [Member] | 664 N. Michigan [Member] | LIBOR plus 1.65% Mortgage Note [Member] | LIBOR [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Borrowings, interest rate description |  |  |  |  |  |  | LIBOR |  |  |  |  |  |
Borrowings, interest rate basis spread |  |  |  |  |  |  | 1.65%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1 / us-gaap_DebtInstrumentAxis = akr_LIBORPlusOnePointSixFivePercentMortgageNoteMember / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = akr_SixSixFourNorthMichiganMember / us-gaap_VariableRateAxis = us-gaap_LondonInterbankOfferedRateLIBORMember |  |  |  |  |  |
Mortgages [Member] | New Hyde Park Shopping Center [Member] | LIBOR Plus 2.25% Mortgage Note [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Borrowings, amount |  |  |  |  |  |  | 1,500,000 us-gaap_DebtInstrumentFaceAmount / us-gaap_DebtInstrumentAxis = akr_LiborPlusTwoPointTwoFivePercentMortgageNoteMember / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = akr_NewHydeParkMember |  |  |  |  |  |
Repayments of debt |  |  |  |  | 7,700,000 us-gaap_RepaymentsOfLongTermDebt / us-gaap_DebtInstrumentAxis = akr_LiborPlusTwoPointTwoFivePercentMortgageNoteMember / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = akr_NewHydeParkMember |  |  |  |  |  |  |  |
Mortgages [Member] | New Hyde Park Shopping Center [Member] | LIBOR Plus 2.25% Mortgage Note [Member] | LIBOR [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Borrowings, interest rate description |  |  |  |  |  |  | LIBOR |  |  |  |  |  |
Borrowings, interest rate basis spread |  |  |  |  | 2.25%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1 / us-gaap_DebtInstrumentAxis = akr_LiborPlusTwoPointTwoFivePercentMortgageNoteMember / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = akr_NewHydeParkMember / us-gaap_VariableRateAxis = us-gaap_LondonInterbankOfferedRateLIBORMember |  | 2.25%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1 / us-gaap_DebtInstrumentAxis = akr_LiborPlusTwoPointTwoFivePercentMortgageNoteMember / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = akr_NewHydeParkMember / us-gaap_VariableRateAxis = us-gaap_LondonInterbankOfferedRateLIBORMember |  |  |  |  |  |
Mortgages [Member] | New Hyde Park Shopping Center [Member] | LIBOR Plus 1.85% Mortgage Note [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Borrowings, amount |  |  |  |  | 12,000,000 us-gaap_DebtInstrumentFaceAmount / us-gaap_DebtInstrumentAxis = akr_LIBORPlusOnePointEightFivePercentMortgageNoteMember / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = akr_NewHydeParkMember |  |  |  |  |  |  |  |
Mortgages [Member] | New Hyde Park Shopping Center [Member] | LIBOR Plus 1.85% Mortgage Note [Member] | LIBOR [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Borrowings, interest rate description |  |  |  |  | LIBOR |  |  |  |  |  |  |  |
Borrowings, interest rate basis spread |  |  |  |  | 1.85%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1 / us-gaap_DebtInstrumentAxis = akr_LIBORPlusOnePointEightFivePercentMortgageNoteMember / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = akr_NewHydeParkMember / us-gaap_VariableRateAxis = us-gaap_LondonInterbankOfferedRateLIBORMember |  |  |  |  |  |  |  |
Mortgages [Member] | Heritage [Member] | LIBOR Plus 2.25% Mortgage Note [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Repayments of debt |  |  |  |  |  | 20,900,000 us-gaap_RepaymentsOfLongTermDebt / us-gaap_DebtInstrumentAxis = akr_LiborPlusTwoPointTwoFivePercentMortgageNoteMember / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = akr_HeritageMember |  |  |  |  |  |  |
Mortgages [Member] | Heritage [Member] | LIBOR Plus 2.25% Mortgage Note [Member] | LIBOR [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Borrowings, interest rate basis spread |  |  |  |  |  | 2.25%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1 / us-gaap_DebtInstrumentAxis = akr_LiborPlusTwoPointTwoFivePercentMortgageNoteMember / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = akr_HeritageMember / us-gaap_VariableRateAxis = us-gaap_LondonInterbankOfferedRateLIBORMember |  |  |  |  |  |  |
Mortgages [Member] | Heritage [Member] | LIBOR Plus 1.55% Mortgage Note [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Borrowings, amount |  |  |  |  |  | 24,500,000 us-gaap_DebtInstrumentFaceAmount / us-gaap_DebtInstrumentAxis = akr_LiborPlusOnePointFiveFivePercentMortgageNoteMember / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = akr_HeritageMember |  |  |  |  |  |  |
Mortgages [Member] | Heritage [Member] | LIBOR Plus 1.55% Mortgage Note [Member] | LIBOR [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Borrowings, interest rate description |  |  |  |  |  | LIBOR |  |  |  |  |  |  |
Borrowings, interest rate basis spread |  |  |  |  |  | 1.55%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1 / us-gaap_DebtInstrumentAxis = akr_LiborPlusOnePointFiveFivePercentMortgageNoteMember / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = akr_HeritageMember / us-gaap_VariableRateAxis = us-gaap_LondonInterbankOfferedRateLIBORMember |  |  |  |  |  |  |
Mortgages [Member] | 654 Broadway [Member] | LIBOR Plus 1.88% Mortgage Note [Member] [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Borrowings, amount |  |  |  |  |  |  |  | 9,000,000 us-gaap_DebtInstrumentFaceAmount / us-gaap_DebtInstrumentAxis = akr_LIBORPlusOnePointEightEightPercentMortgageNoteMemberMember / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = akr_SixFiveFourBroadwayMember |  |  |  |  |
Mortgages [Member] | 654 Broadway [Member] | LIBOR Plus 1.88% Mortgage Note [Member] [Member] | LIBOR [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Borrowings, interest rate description |  |  |  |  |  |  |  | LIBOR |  |  |  |  |
Borrowings, interest rate basis spread |  |  |  |  |  |  |  | 1.88%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1 / us-gaap_DebtInstrumentAxis = akr_LIBORPlusOnePointEightEightPercentMortgageNoteMemberMember / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = akr_SixFiveFourBroadwayMember / us-gaap_VariableRateAxis = us-gaap_LondonInterbankOfferedRateLIBORMember |  |  |  |  |
Mortgages [Member] | Paramus Plaza [Member] | LIBOR Plus 1.70% Percent Mortgage Note [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Borrowings, amount |  |  |  |  |  |  |  | 12,600,000 us-gaap_DebtInstrumentFaceAmount / us-gaap_DebtInstrumentAxis = akr_LIBORPlusOnePointSevenZeroPercentMortgageNoteMember / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = akr_ParamusPlazaMember |  |  |  |  |
Mortgages [Member] | Paramus Plaza [Member] | LIBOR Plus 1.70% Percent Mortgage Note [Member] | LIBOR [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Borrowings, interest rate description |  |  |  |  |  |  |  | LIBOR |  |  |  |  |
Borrowings, interest rate basis spread |  |  |  |  |  |  |  | 1.70%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1 / us-gaap_DebtInstrumentAxis = akr_LIBORPlusOnePointSevenZeroPercentMortgageNoteMember / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = akr_ParamusPlazaMember / us-gaap_VariableRateAxis = us-gaap_LondonInterbankOfferedRateLIBORMember |  |  |  |  |
Mortgages [Member] | 613 - 623 W. Diversey [Member] | 6.35% Mortgage Note [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Borrowings, amount |  |  |  |  | 0 us-gaap_DebtInstrumentFaceAmount / us-gaap_ExtinguishmentOfDebtAxis = akr_SixPointThreeFivePercentMortgageNoteMember / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = akr_ClarkDiverseyMember |  |  |  |  |  |  |  |
Borrowings, interest rate |  |  |  |  | 6.35%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_ExtinguishmentOfDebtAxis = akr_SixPointThreeFivePercentMortgageNoteMember / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = akr_ClarkDiverseyMember |  |  |  |  |  |  |  |
Repayments of debt |  |  |  |  | 4,200,000 us-gaap_RepaymentsOfLongTermDebt / us-gaap_ExtinguishmentOfDebtAxis = akr_SixPointThreeFivePercentMortgageNoteMember / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = akr_ClarkDiverseyMember |  |  |  |  |  |  |  |
Mortgages [Member] | Lake Montclair [Member] | LIBOR Plus 2.15% Mortgage Note [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Borrowings, amount |  |  |  |  | 15,500,000 us-gaap_DebtInstrumentFaceAmount / us-gaap_DebtInstrumentAxis = akr_LIBORPlusTwoPointOneFivePercentMortgageNoteMember / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = akr_LakeMontclairMember |  |  |  |  |  |  |  |
Mortgages [Member] | Lake Montclair [Member] | LIBOR Plus 2.15% Mortgage Note [Member] | LIBOR [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Borrowings, interest rate description |  |  |  |  | LIBOR |  |  |  |  |  |  |  |
Borrowings, interest rate basis spread |  |  |  |  | 2.15%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1 / us-gaap_DebtInstrumentAxis = akr_LIBORPlusTwoPointOneFivePercentMortgageNoteMember / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = akr_LakeMontclairMember / us-gaap_VariableRateAxis = us-gaap_LondonInterbankOfferedRateLIBORMember |  |  |  |  |  |  |  |
Mortgages [Member] | 938 W. North Avenue [Member] | LIBOR Plus 2.35% Mortgage Note [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Borrowings, amount |  |  |  |  |  |  |  |  | 12,500,000 us-gaap_DebtInstrumentFaceAmount / us-gaap_DebtInstrumentAxis = akr_LIBORPlusTwoPointThreeFivePercentMortgageNoteMember / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = akr_NineThreeEightWestNorthMember |  |  |  |
Mortgages [Member] | 938 W. North Avenue [Member] | LIBOR Plus 2.35% Mortgage Note [Member] | LIBOR [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Borrowings, interest rate description |  |  |  |  |  |  |  |  | LIBOR |  |  |  |
Borrowings, interest rate basis spread |  |  |  |  |  |  |  |  | 2.35%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1 / us-gaap_DebtInstrumentAxis = akr_LIBORPlusTwoPointThreeFivePercentMortgageNoteMember / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = akr_NineThreeEightWestNorthMember / us-gaap_VariableRateAxis = us-gaap_LondonInterbankOfferedRateLIBORMember |  |  |  |
Mortgages [Member] | 1151 Third Avenue [Member] | LIBOR Plus 1.75% Mortgage Note [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Borrowings, amount |  |  |  |  |  |  |  |  |  | 12,500,000 us-gaap_DebtInstrumentFaceAmount / us-gaap_DebtInstrumentAxis = akr_LIBORPlusOnePointSevenFivePercentMortgageNoteMember / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = akr_OneOneFiveOneThirdAvenueMember |  |  |
Mortgages [Member] | 1151 Third Avenue [Member] | LIBOR Plus 1.75% Mortgage Note [Member] | LIBOR [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Borrowings, interest rate description |  |  |  |  |  |  |  |  |  | LIBOR |  |  |
Borrowings, interest rate basis spread |  |  |  |  |  |  |  |  |  | 1.75%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1 / us-gaap_DebtInstrumentAxis = akr_LIBORPlusOnePointSevenFivePercentMortgageNoteMember / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = akr_OneOneFiveOneThirdAvenueMember / us-gaap_VariableRateAxis = us-gaap_LondonInterbankOfferedRateLIBORMember |  |  |
Mortgages [Member] | New Loudon Center [Member] | 5.64% Mortgage Note [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Borrowings, amount |  |  |  |  |  |  |  |  |  | 0 us-gaap_DebtInstrumentFaceAmount / us-gaap_ExtinguishmentOfDebtAxis = akr_FivePointSixFourPercentMortgageNoteMember / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = akr_NewLoudonMember |  |  |
Borrowings, interest rate |  |  |  |  |  |  |  |  |  | 5.64%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_ExtinguishmentOfDebtAxis = akr_FivePointSixFourPercentMortgageNoteMember / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = akr_NewLoudonMember |  |  |
Repayments of debt |  |  |  |  |  |  |  |  |  | 13,300,000 us-gaap_RepaymentsOfLongTermDebt / us-gaap_ExtinguishmentOfDebtAxis = akr_FivePointSixFourPercentMortgageNoteMember / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = akr_NewLoudonMember |  |  |
Mortgages [Member] | Bedford Green [Member] | 5.95% Mortgage Note [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Borrowings, amount |  |  |  |  |  |  |  |  |  |  |  |  | 29,794,000 us-gaap_DebtInstrumentFaceAmount / us-gaap_DebtInstrumentAxis = akr_FivePointNineFivePercentMortgageNoteMember / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = akr_BedfordGreenMember
Borrowings, interest rate |  |  |  |  |  |  |  |  |  |  |  |  | 5.10%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_DebtInstrumentAxis = akr_FivePointNineFivePercentMortgageNoteMember / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = akr_BedfordGreenMember
Mortgages [Member] | City Point [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Borrowings, amount | 81,191,000 us-gaap_DebtInstrumentFaceAmount / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = akr_CityPointMember | [1] | 81,191,000 us-gaap_DebtInstrumentFaceAmount / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = akr_CityPointMember | [1] |  |  |  |  |  |  |  |  |
Mortgages [Member] | City Point [Member] | LIBOR Plus 1.70% Percent Mortgage Note [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Borrowings, amount | 20,000,000 us-gaap_DebtInstrumentFaceAmount / us-gaap_DebtInstrumentAxis = akr_LIBORPlusOnePointSevenZeroPercentMortgageNoteMember / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = akr_CityPointMember |  | 20,000,000 us-gaap_DebtInstrumentFaceAmount / us-gaap_DebtInstrumentAxis = akr_LIBORPlusOnePointSevenZeroPercentMortgageNoteMember / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = akr_CityPointMember |  |  |  |  |  |  |  |  |  |
Mortgages [Member] | City Point [Member] | LIBOR Plus 1.70% Percent Mortgage Note [Member] | LIBOR [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Borrowings, interest rate description |  |  | LIBOR |  |  |  |  |  |  |  |  |  |
Borrowings, interest rate basis spread |  |  | 1.70%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1 / us-gaap_DebtInstrumentAxis = akr_LIBORPlusOnePointSevenZeroPercentMortgageNoteMember / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = akr_CityPointMember / us-gaap_VariableRateAxis = us-gaap_LondonInterbankOfferedRateLIBORMember |  |  |  |  |  |  |  |  |  |
Mortgages [Member] | City Point [Member] | LIBOR Plus 2.00% Mortgage Note [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Borrowings, amount |  |  |  |  |  |  |  |  |  |  | 20,000,000 us-gaap_DebtInstrumentFaceAmount / us-gaap_DebtInstrumentAxis = akr_LIBORPlusTwoPercentMortgageNoteMember / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = akr_CityPointMember |  |
Mortgages [Member] | City Point [Member] | LIBOR Plus 2.00% Mortgage Note [Member] | LIBOR [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Borrowings, interest rate description |  |  |  |  |  |  |  |  |  |  | LIBOR |  |
Borrowings, interest rate basis spread |  |  |  |  |  |  |  |  |  |  | 2.00%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1 / us-gaap_DebtInstrumentAxis = akr_LIBORPlusTwoPercentMortgageNoteMember / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = akr_CityPointMember / us-gaap_VariableRateAxis = us-gaap_LondonInterbankOfferedRateLIBORMember |  |
Mortgages [Member] | City Point [Member] | 7.25% Mortgage Loan [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Borrowings, interest rate |  |  |  |  |  |  |  |  |  |  | 7.25%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_DebtInstrumentAxis = akr_SevenPointTwoFivePercentMortgageLoanMember / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = akr_CityPointMember |  |
Repayments of debt |  |  |  |  |  |  |  |  |  |  | 20,000,000 us-gaap_RepaymentsOfLongTermDebt / us-gaap_DebtInstrumentAxis = akr_SevenPointTwoFivePercentMortgageLoanMember / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = akr_CityPointMember |  |
Mortgages [Member] | City Point [Member] | LIBOR Plus 5.00% Mortgage Loan [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Repayments of debt |  |  | 20,000,000 us-gaap_RepaymentsOfLongTermDebt / us-gaap_DebtInstrumentAxis = akr_LIBORPlusFivePercentMortgageLoanMember / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = akr_CityPointMember |  |  |  |  |  |  |  |  |  |
Mortgages [Member] | City Point [Member] | LIBOR Plus 5.00% Mortgage Loan [Member] | LIBOR [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Borrowings, interest rate basis spread |  |  | 5.00%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1 / us-gaap_DebtInstrumentAxis = akr_LIBORPlusFivePercentMortgageLoanMember / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = akr_CityPointMember / us-gaap_VariableRateAxis = us-gaap_LondonInterbankOfferedRateLIBORMember |  |  |  |  |  |  |  |  |  |
Mortgages [Member] | Lincoln Park Center [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Borrowings, amount | 5,000,000 us-gaap_DebtInstrumentFaceAmount / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = akr_LincolnParkCentreLlcMember |  | 5,000,000 us-gaap_DebtInstrumentFaceAmount / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = akr_LincolnParkCentreLlcMember |  |  |  |  |  |  |  |  |  |
Mortgages [Member] | 3104 M Street [Member] | Prime Plus .50% Mortgage Note [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Borrowings, amount | 103,000 us-gaap_DebtInstrumentFaceAmount / us-gaap_DebtInstrumentAxis = akr_PrimePlusPointFiveZeroPercentMortgageNoteMember / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = akr_ThirtyOneZeroFourMStreetMember |  | 103,000 us-gaap_DebtInstrumentFaceAmount / us-gaap_DebtInstrumentAxis = akr_PrimePlusPointFiveZeroPercentMortgageNoteMember / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = akr_ThirtyOneZeroFourMStreetMember |  |  |  |  |  |  |  |  |  |
Mortgages [Member] | 3104 M Street [Member] | Prime Plus .50% Mortgage Note [Member] | Prime [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Borrowings, interest rate description |  |  | PRIME |  |  |  |  |  |  |  |  |  |
Borrowings, interest rate basis spread |  |  | 0.50%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1 / us-gaap_DebtInstrumentAxis = akr_PrimePlusPointFiveZeroPercentMortgageNoteMember / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = akr_ThirtyOneZeroFourMStreetMember / us-gaap_VariableRateAxis = us-gaap_PrimeRateMember |  |  |  |  |  |  |  |  |  |
Construction Loans [Member] | City Point [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Construction loan, amount released into restricted cash | 199,000,000 akr_ConstructionLoanAmountReleasedIntoRestrictedCash / us-gaap_LongtermDebtTypeAxis = us-gaap_ConstructionLoansMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = akr_CityPointMember |  | 199,000,000 akr_ConstructionLoanAmountReleasedIntoRestrictedCash / us-gaap_LongtermDebtTypeAxis = us-gaap_ConstructionLoansMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = akr_CityPointMember |  |  |  |  |  |  |  |  |  |
Construction loan, amount withdrawn from restricted cash | 168,400,000 akr_ConstructionLoanAmountWithdrawnFromRestrictedCash / us-gaap_LongtermDebtTypeAxis = us-gaap_ConstructionLoansMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = akr_CityPointMember |  | 168,400,000 akr_ConstructionLoanAmountWithdrawnFromRestrictedCash / us-gaap_LongtermDebtTypeAxis = us-gaap_ConstructionLoansMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = akr_CityPointMember |  |  |  |  |  |  |  |  |  |
Construction loan, amount released into restricted cash, amount available | $ 30,600,000 akr_ConstructionLoanAmountReleasedIntoRestrictedCashAmountAvailable / us-gaap_LongtermDebtTypeAxis = us-gaap_ConstructionLoansMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = akr_CityPointMember |  | 30,600,000 akr_ConstructionLoanAmountReleasedIntoRestrictedCashAmountAvailable / us-gaap_LongtermDebtTypeAxis = us-gaap_ConstructionLoansMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = akr_CityPointMember |  |  |  |  |  |  |  |  |  |
[1] | As of December 31, 2014, $199.0 million of funds have been released under the Company's EB-5 loan relating to its City Point project into a restricted cash account. $168.4 million has been drawn to fund construction activities, with $30.6 million remaining in the restricted cash account at December 31, 2014.

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