Mortgage Notes Payable (Details) (USD $)
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12 Months Ended |
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Dec. 31, 2014
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Dec. 31, 2013
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Mortgage Loans on Real Estate [Line Items] |
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Collateral for mortgage notes payable |
1wre_MinimumBuildingsOrLandCollateralForMortgageNotesPayable
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Mortgage notes payable |
$ 418,525,000us-gaap_SecuredDebt
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$ 294,671,000us-gaap_SecuredDebt
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Carrying Amount, Mortgaged Properties |
607,800,000wre_CarryingAmountMortgagedProperties
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433,700,000wre_CarryingAmountMortgagedProperties
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The Army Navy Club Building [Member] |
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Mortgage Loans on Real Estate [Line Items] |
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Debt Instrument, Issuance Date |
Mar. 26, 2014
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[1] |
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Mortgage note, fair value interest rate |
3.18%us-gaap_DebtInstrumentInterestRateEffectivePercentage / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = wre_TheArmyNavyClubBuildingMember
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[2] |
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Mortgage notes payable |
52,235,000us-gaap_SecuredDebt / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = wre_TheArmyNavyClubBuildingMember
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0us-gaap_SecuredDebt / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = wre_TheArmyNavyClubBuildingMember
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Debt Instrument, Maturity Date |
May 01, 2017
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Yale West [Member] |
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Mortgage Loans on Real Estate [Line Items] |
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Debt Instrument, Issuance Date |
Feb. 21, 2014
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[1] |
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Mortgage note, fair value interest rate |
3.75%us-gaap_DebtInstrumentInterestRateEffectivePercentage / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = wre_YaleWestMember
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[2] |
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Mortgage notes payable |
53,029,000us-gaap_SecuredDebt / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = wre_YaleWestMember
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0us-gaap_SecuredDebt / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = wre_YaleWestMember
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Debt Instrument, Maturity Date |
Jan. 31, 2022
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Six Fifty North Glebe Road [Member] |
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Mortgage Loans on Real Estate [Line Items] |
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Debt Instrument, Issuance Date |
Feb. 21, 2013
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[1],[3],[4] |
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Mortgage note, fair value interest rate |
2.31%us-gaap_DebtInstrumentInterestRateEffectivePercentage / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = wre_SixFiftyNorthGlebeRoadMember
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[2],[3],[4] |
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Mortgage notes payable |
27,690,000us-gaap_SecuredDebt / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = wre_SixFiftyNorthGlebeRoadMember
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7,297,000us-gaap_SecuredDebt / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = wre_SixFiftyNorthGlebeRoadMember
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[3],[4] |
Debt Instrument, Maturity Date |
Feb. 21, 2016
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[3],[4] |
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Extension term |
2 years
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John Marshall II Member |
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Mortgage Loans on Real Estate [Line Items] |
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Debt Instrument, Issuance Date |
Sep. 15, 2011
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[1] |
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Mortgage note, fair value interest rate |
5.79%us-gaap_DebtInstrumentInterestRateEffectivePercentage / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = wre_JohnMarshallIiMember
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[2] |
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Mortgage notes payable |
51,810,000us-gaap_SecuredDebt / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = wre_JohnMarshallIiMember
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52,563,000us-gaap_SecuredDebt / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = wre_JohnMarshallIiMember
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Debt Instrument, Maturity Date |
May 05, 2016
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Olney Village Center Member |
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Mortgage Loans on Real Estate [Line Items] |
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Debt Instrument, Issuance Date |
Aug. 30, 2011
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[1] |
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Mortgage note, fair value interest rate |
4.94%us-gaap_DebtInstrumentInterestRateEffectivePercentage / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = wre_OlneyVillageCenterMember
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[2] |
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Mortgage notes payable |
19,070,000us-gaap_SecuredDebt / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = wre_OlneyVillageCenterMember
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20,743,000us-gaap_SecuredDebt / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = wre_OlneyVillageCenterMember
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Debt Instrument, Maturity Date |
Oct. 01, 2023
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Kenmore Apartments [Member] |
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Mortgage Loans on Real Estate [Line Items] |
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Debt Instrument, Issuance Date |
Feb. 02, 2009
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[1] |
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Mortgage note, fair value interest rate |
5.37%us-gaap_DebtInstrumentInterestRateEffectivePercentage / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = wre_KenmoreApartmentsMember
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[2] |
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Mortgage notes payable |
34,305,000us-gaap_SecuredDebt / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = wre_KenmoreApartmentsMember
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34,937,000us-gaap_SecuredDebt / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = wre_KenmoreApartmentsMember
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Debt Instrument, Maturity Date |
Mar. 01, 2019
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2445 M Street [Member] |
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Mortgage Loans on Real Estate [Line Items] |
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Debt Instrument, Issuance Date |
Dec. 02, 2008
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[1],[3] |
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Mortgage note, fair value interest rate |
7.25%us-gaap_DebtInstrumentInterestRateEffectivePercentage / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = wre_MStreet2445Member
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[2],[3] |
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Mortgage notes payable |
99,357,000us-gaap_SecuredDebt / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = wre_MStreet2445Member
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[3] |
98,102,000us-gaap_SecuredDebt / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = wre_MStreet2445Member
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[3] |
Debt Instrument, Maturity Date |
Jan. 06, 2017
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[3] |
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3801 Connecticut, Walker House, Bethesda Hill [Member] |
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Mortgage Loans on Real Estate [Line Items] |
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Debt Instrument, Issuance Date |
May 29, 2008
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[1],[5] |
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Mortgage note, fair value interest rate |
5.71%us-gaap_DebtInstrumentInterestRateEffectivePercentage / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = wre_A3801ConnecticutWalkerHouseBethesdaHillMember
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[2],[5] |
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Mortgage notes payable |
$ 81,029,000us-gaap_SecuredDebt / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = wre_A3801ConnecticutWalkerHouseBethesdaHillMember
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[5] |
$ 81,029,000us-gaap_SecuredDebt / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = wre_A3801ConnecticutWalkerHouseBethesdaHillMember
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[5] |
Debt Instrument, Maturity Date |
Jun. 01, 2016
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[5] |
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Extension term |
1 year
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London Interbank Offered Rate (LIBOR) [Member] | Six Fifty North Glebe Road [Member] |
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Mortgage Loans on Real Estate [Line Items] |
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Spread on variable rate |
2.15%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1 / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = wre_SixFiftyNorthGlebeRoadMember / us-gaap_VariableRateAxis = us-gaap_LondonInterbankOfferedRateLIBORMember
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