Annual report pursuant to Section 13 and 15(d)

Nature Of Business (Details)

v2.4.1.9
Nature Of Business (Details) (USD $)
3 Months Ended 12 Months Ended 0 Months Ended
Mar. 31, 2014
Dec. 31, 2013
Mar. 31, 2013
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Jan. 21, 2014
Dec. 20, 2012
May 02, 2014
Aug. 31, 2012
Nature of Business [Line Items]                      
Percentage of Distribution of Ordinary Taxable Income       90.00%wre_PercentageOfDistributionOfOrdinaryTaxableIncome              
Gain on sale of real estate       $ 105,985,000us-gaap_DiscontinuedOperationGainLossOnDisposalOfDiscontinuedOperationNetOfTax $ 22,144,000us-gaap_DiscontinuedOperationGainLossOnDisposalOfDiscontinuedOperationNetOfTax $ 5,124,000us-gaap_DiscontinuedOperationGainLossOnDisposalOfDiscontinuedOperationNetOfTax          
Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal       570,000us-gaap_DisposalGroupNotDiscontinuedOperationGainLossOnDisposal 0us-gaap_DisposalGroupNotDiscontinuedOperationGainLossOnDisposal 0us-gaap_DisposalGroupNotDiscontinuedOperationGainLossOnDisposal          
Disposal Group, Including Discontinued Operation, Gain (Loss) on Disposal 106,000,000wre_DisposalGroupIncludingDiscontinuedOperationGainLossonDisposal 18,900,000wre_DisposalGroupIncludingDiscontinuedOperationGainLossonDisposal 3,200,000wre_DisposalGroupIncludingDiscontinuedOperationGainLossonDisposal 106,555,000wre_DisposalGroupIncludingDiscontinuedOperationGainLossonDisposal 22,144,000wre_DisposalGroupIncludingDiscontinuedOperationGainLossonDisposal 5,124,000wre_DisposalGroupIncludingDiscontinuedOperationGainLossonDisposal          
Ordinary income       40.00%wre_PercentageOfDividendsPaidOnOrdinaryIncome 62.00%wre_PercentageOfDividendsPaidOnOrdinaryIncome 72.00%wre_PercentageOfDividendsPaidOnOrdinaryIncome          
Return of capital       52.00%wre_PercentageOfDividendsPaidOnReturnOfCapital 38.00%wre_PercentageOfDividendsPaidOnReturnOfCapital 26.00%wre_PercentageOfDividendsPaidOnReturnOfCapital          
Qualified dividends       0.00%wre_PercentageOfDividendsPaidQualifiedDividends 0.00%wre_PercentageOfDividendsPaidQualifiedDividends 0.00%wre_PercentageOfDividendsPaidQualifiedDividends          
Unrecaptured Section 1250 gain       8.00%wre_PercentageOfDividendsPaidOnUnrecapturedSection1250Gain 0.00%wre_PercentageOfDividendsPaidOnUnrecapturedSection1250Gain 2.00%wre_PercentageOfDividendsPaidOnUnrecapturedSection1250Gain          
Capital gain       0.00%wre_PercentageOfDividendsPaidOnCapitalGain 0.00%wre_PercentageOfDividendsPaidOnCapitalGain 0.00%wre_PercentageOfDividendsPaidOnCapitalGain          
Dulles Station II [Member]                      
Nature of Business [Line Items]                      
Real estate impairment             14,500,000us-gaap_ImpairmentOfRealEstate
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= wre_DullesStationIiMember
       
Taxable Reit Subsidiary [Member]                      
Nature of Business [Line Items]                      
Deferred Tax Assets, Net   0us-gaap_DeferredTaxAssetsNet
/ us-gaap_NatureOfExpenseAxis
= wre_TaxableReitSubsidiaryMember
  0us-gaap_DeferredTaxAssetsNet
/ us-gaap_NatureOfExpenseAxis
= wre_TaxableReitSubsidiaryMember
0us-gaap_DeferredTaxAssetsNet
/ us-gaap_NatureOfExpenseAxis
= wre_TaxableReitSubsidiaryMember
           
Deferred Tax Liabilities   600,000us-gaap_DeferredTaxLiabilities
/ us-gaap_NatureOfExpenseAxis
= wre_TaxableReitSubsidiaryMember
  600,000us-gaap_DeferredTaxLiabilities
/ us-gaap_NatureOfExpenseAxis
= wre_TaxableReitSubsidiaryMember
600,000us-gaap_DeferredTaxLiabilities
/ us-gaap_NatureOfExpenseAxis
= wre_TaxableReitSubsidiaryMember
           
Taxable Reit Subsidiary [Member] | Dulles Station II [Member]                      
Nature of Business [Line Items]                      
Deferred Tax Liabilities, Other             5,700,000us-gaap_DeferredTaxAssetsOther
/ us-gaap_NatureOfExpenseAxis
= wre_TaxableReitSubsidiaryMember
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= wre_DullesStationIiMember
       
Medical Office Building [Member] | Medical Office Portfolio Transactions III & IV [Member]                      
Nature of Business [Line Items]                      
Gain on sale of real estate       105,985,000us-gaap_DiscontinuedOperationGainLossOnDisposalOfDiscontinuedOperationNetOfTax
/ us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis
= wre_MedicalOfficeBuildingMember
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= wre_MedicalOfficePortfolioTransactionsIIIIVMember
      105,985,000us-gaap_DiscontinuedOperationGainLossOnDisposalOfDiscontinuedOperationNetOfTax
/ us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis
= wre_MedicalOfficeBuildingMember
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= wre_MedicalOfficePortfolioTransactionsIIIIVMember
     
Medical Office Building [Member] | Plumtree Medical Center [Member]                      
Nature of Business [Line Items]                      
Gain on sale of real estate           1,400,000us-gaap_DiscontinuedOperationGainLossOnDisposalOfDiscontinuedOperationNetOfTax
/ us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis
= wre_MedicalOfficeBuildingMember
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= wre_PlumtreeMedicalCenterMember
    1,400,000us-gaap_DiscontinuedOperationGainLossOnDisposalOfDiscontinuedOperationNetOfTax
/ us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis
= wre_MedicalOfficeBuildingMember
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= wre_PlumtreeMedicalCenterMember
   
Retail [Member] | 5740 Columbia Road [Member]                      
Nature of Business [Line Items]                      
Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal                   570,000us-gaap_DisposalGroupNotDiscontinuedOperationGainLossOnDisposal
/ us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis
= wre_RetailMember
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= wre_A5740ColumbiaRoadMember
 
Medical Office And Office Building [Member] | Medical Office Portfolio Transactions I & II [Member]                      
Nature of Business [Line Items]                      
Gain on sale of real estate         18,949,000us-gaap_DiscontinuedOperationGainLossOnDisposalOfDiscontinuedOperationNetOfTax
/ us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis
= wre_MedicalOfficeAndOfficeBuildingMember
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= wre_MedicalOfficePortfolioTransactionsIIIMember
           
Office [Member] | Atrium Building [Member]                      
Nature of Business [Line Items]                      
Gain on sale of real estate         3,195,000us-gaap_DiscontinuedOperationGainLossOnDisposalOfDiscontinuedOperationNetOfTax
/ us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis
= wre_OfficeMember
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= wre_AtriumBuildingMember
           
Office [Member] | Research Boulevard 1700 [Member]                      
Nature of Business [Line Items]                      
Gain on sale of real estate                     $ 3,724,000us-gaap_DiscontinuedOperationGainLossOnDisposalOfDiscontinuedOperationNetOfTax
/ us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis
= wre_OfficeMember
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= wre_ResearchBoulevard1700Member