Annual report pursuant to Section 13 and 15(d)

Segment Information (Details)

v2.4.1.9
Segment Information (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 12 Months Ended
Dec. 31, 2014
Sep. 30, 2014
Jun. 30, 2014
Mar. 31, 2014
Dec. 31, 2013
Sep. 30, 2013
Jun. 30, 2013
Mar. 31, 2013
Dec. 31, 2014
segment
Dec. 31, 2013
Dec. 31, 2012
Segment Reporting Information [Line Items]                      
Number of Reportable Segments                 3us-gaap_NumberOfReportableSegments    
Real estate rental revenue $ 74,359us-gaap_RealEstateRevenueNet $ 73,413us-gaap_RealEstateRevenueNet $ 72,254us-gaap_RealEstateRevenueNet $ 68,611us-gaap_RealEstateRevenueNet $ 66,721us-gaap_RealEstateRevenueNet $ 65,828us-gaap_RealEstateRevenueNet $ 65,915us-gaap_RealEstateRevenueNet $ 64,560us-gaap_RealEstateRevenueNet $ 288,637us-gaap_RealEstateRevenueNet $ 263,024us-gaap_RealEstateRevenueNet $ 254,794us-gaap_RealEstateRevenueNet
Real estate expenses                 103,695us-gaap_CostOfRealEstateRevenue 93,293us-gaap_CostOfRealEstateRevenue 86,545us-gaap_CostOfRealEstateRevenue
Net operating income                 184,942wre_OperatingIncomeLossNet 169,731wre_OperatingIncomeLossNet 168,249wre_OperatingIncomeLossNet
Depreciation and amortization                 (96,011)us-gaap_DepreciationAndAmortization (85,740)us-gaap_DepreciationAndAmortization (85,107)us-gaap_DepreciationAndAmortization
General and administrative                 (19,761)us-gaap_GeneralAndAdministrativeExpense (17,535)us-gaap_GeneralAndAdministrativeExpense (15,488)us-gaap_GeneralAndAdministrativeExpense
Acquisition costs                 (5,710)us-gaap_AcquisitionCosts (1,265)us-gaap_AcquisitionCosts (234)us-gaap_AcquisitionCosts
Interest expense                 (59,785)us-gaap_InterestExpense (63,573)us-gaap_InterestExpense (60,627)us-gaap_InterestExpense
Other income                 825us-gaap_OtherNonoperatingIncomeExpense 926us-gaap_OtherNonoperatingIncomeExpense 975us-gaap_OtherNonoperatingIncomeExpense
Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal                 570us-gaap_DisposalGroupNotDiscontinuedOperationGainLossOnDisposal 0us-gaap_DisposalGroupNotDiscontinuedOperationGainLossOnDisposal 0us-gaap_DisposalGroupNotDiscontinuedOperationGainLossOnDisposal
Loss on extinguishment of debt                 0us-gaap_GainsLossesOnExtinguishmentOfDebt (2,737)us-gaap_GainsLossesOnExtinguishmentOfDebt 0us-gaap_GainsLossesOnExtinguishmentOfDebt
Income from properties sold or held for sale                 546us-gaap_DiscontinuedOperationIncomeLossFromDiscontinuedOperationDuringPhaseOutPeriodNetOfTax 15,395us-gaap_DiscontinuedOperationIncomeLossFromDiscontinuedOperationDuringPhaseOutPeriodNetOfTax 10,816us-gaap_DiscontinuedOperationIncomeLossFromDiscontinuedOperationDuringPhaseOutPeriodNetOfTax
Gain on sale of real estate                 105,985us-gaap_DiscontinuedOperationGainLossOnDisposalOfDiscontinuedOperationNetOfTax 22,144us-gaap_DiscontinuedOperationGainLossOnDisposalOfDiscontinuedOperationNetOfTax 5,124us-gaap_DiscontinuedOperationGainLossOnDisposalOfDiscontinuedOperationNetOfTax
Net income 2,309us-gaap_ProfitLoss 3,658us-gaap_ProfitLoss 1,080us-gaap_ProfitLoss 104,554us-gaap_ProfitLoss 18,908us-gaap_ProfitLoss 5,840us-gaap_ProfitLoss 5,263us-gaap_ProfitLoss 7,335us-gaap_ProfitLoss 111,601us-gaap_ProfitLoss 37,346us-gaap_ProfitLoss 23,708us-gaap_ProfitLoss
Less: Net loss attributable to noncontrolling interests in subsidiaries                 38us-gaap_NetIncomeLossAttributableToNoncontrollingInterest 0us-gaap_NetIncomeLossAttributableToNoncontrollingInterest 0us-gaap_NetIncomeLossAttributableToNoncontrollingInterest
Net income attributable to the controlling interests 2,330us-gaap_NetIncomeLoss 3,668us-gaap_NetIncomeLoss 1,087us-gaap_NetIncomeLoss 104,554us-gaap_NetIncomeLoss 18,908us-gaap_NetIncomeLoss 5,840us-gaap_NetIncomeLoss 5,263us-gaap_NetIncomeLoss 7,335us-gaap_NetIncomeLoss 111,639us-gaap_NetIncomeLoss 37,346us-gaap_NetIncomeLoss 23,708us-gaap_NetIncomeLoss
Capital expenditures                 59,529wre_CapitalExpenditures 55,991wre_CapitalExpenditures 51,735wre_CapitalExpenditures
Total assets 2,113,707us-gaap_Assets       1,975,493us-gaap_Assets       2,113,707us-gaap_Assets 1,975,493us-gaap_Assets 2,124,376us-gaap_Assets
Office [Member]                      
Segment Reporting Information [Line Items]                      
Real estate rental revenue as a percentage of total                 0.57wre_PercentageOfRealEstateRentalRevenue
/ us-gaap_StatementBusinessSegmentsAxis
= wre_OfficeMember
0.58wre_PercentageOfRealEstateRentalRevenue
/ us-gaap_StatementBusinessSegmentsAxis
= wre_OfficeMember
0.58wre_PercentageOfRealEstateRentalRevenue
/ us-gaap_StatementBusinessSegmentsAxis
= wre_OfficeMember
Percentage of total income producing real estate assets                 0.61wre_PercentageOfRealEstateAssets
/ us-gaap_StatementBusinessSegmentsAxis
= wre_OfficeMember
0.62wre_PercentageOfRealEstateAssets
/ us-gaap_StatementBusinessSegmentsAxis
= wre_OfficeMember
 
Real estate rental revenue                 166,116us-gaap_RealEstateRevenueNet
/ us-gaap_StatementBusinessSegmentsAxis
= wre_OfficeMember
152,339us-gaap_RealEstateRevenueNet
/ us-gaap_StatementBusinessSegmentsAxis
= wre_OfficeMember
147,401us-gaap_RealEstateRevenueNet
/ us-gaap_StatementBusinessSegmentsAxis
= wre_OfficeMember
Real estate expenses                 63,903us-gaap_CostOfRealEstateRevenue
/ us-gaap_StatementBusinessSegmentsAxis
= wre_OfficeMember
57,293us-gaap_CostOfRealEstateRevenue
/ us-gaap_StatementBusinessSegmentsAxis
= wre_OfficeMember
53,376us-gaap_CostOfRealEstateRevenue
/ us-gaap_StatementBusinessSegmentsAxis
= wre_OfficeMember
Net operating income                 102,213wre_OperatingIncomeLossNet
/ us-gaap_StatementBusinessSegmentsAxis
= wre_OfficeMember
95,046wre_OperatingIncomeLossNet
/ us-gaap_StatementBusinessSegmentsAxis
= wre_OfficeMember
94,025wre_OperatingIncomeLossNet
/ us-gaap_StatementBusinessSegmentsAxis
= wre_OfficeMember
Capital expenditures                 43,128wre_CapitalExpenditures
/ us-gaap_StatementBusinessSegmentsAxis
= wre_OfficeMember
37,777wre_CapitalExpenditures
/ us-gaap_StatementBusinessSegmentsAxis
= wre_OfficeMember
35,330wre_CapitalExpenditures
/ us-gaap_StatementBusinessSegmentsAxis
= wre_OfficeMember
Total assets 1,284,523us-gaap_Assets
/ us-gaap_StatementBusinessSegmentsAxis
= wre_OfficeMember
      1,073,302us-gaap_Assets
/ us-gaap_StatementBusinessSegmentsAxis
= wre_OfficeMember
      1,284,523us-gaap_Assets
/ us-gaap_StatementBusinessSegmentsAxis
= wre_OfficeMember
1,073,302us-gaap_Assets
/ us-gaap_StatementBusinessSegmentsAxis
= wre_OfficeMember
1,140,046us-gaap_Assets
/ us-gaap_StatementBusinessSegmentsAxis
= wre_OfficeMember
Medical Office [Member]                      
Segment Reporting Information [Line Items]                      
Real estate rental revenue                   0us-gaap_RealEstateRevenueNet
/ us-gaap_StatementBusinessSegmentsAxis
= wre_MedicalOfficeMember
0us-gaap_RealEstateRevenueNet
/ us-gaap_StatementBusinessSegmentsAxis
= wre_MedicalOfficeMember
Real estate expenses                   0us-gaap_CostOfRealEstateRevenue
/ us-gaap_StatementBusinessSegmentsAxis
= wre_MedicalOfficeMember
0us-gaap_CostOfRealEstateRevenue
/ us-gaap_StatementBusinessSegmentsAxis
= wre_MedicalOfficeMember
Net operating income                   0wre_OperatingIncomeLossNet
/ us-gaap_StatementBusinessSegmentsAxis
= wre_MedicalOfficeMember
0wre_OperatingIncomeLossNet
/ us-gaap_StatementBusinessSegmentsAxis
= wre_MedicalOfficeMember
Capital expenditures                   3,695wre_CapitalExpenditures
/ us-gaap_StatementBusinessSegmentsAxis
= wre_MedicalOfficeMember
7,004wre_CapitalExpenditures
/ us-gaap_StatementBusinessSegmentsAxis
= wre_MedicalOfficeMember
Total assets         84,001us-gaap_Assets
/ us-gaap_StatementBusinessSegmentsAxis
= wre_MedicalOfficeMember
        84,001us-gaap_Assets
/ us-gaap_StatementBusinessSegmentsAxis
= wre_MedicalOfficeMember
327,573us-gaap_Assets
/ us-gaap_StatementBusinessSegmentsAxis
= wre_MedicalOfficeMember
Retail [Member]                      
Segment Reporting Information [Line Items]                      
Real estate rental revenue as a percentage of total                 0.21wre_PercentageOfRealEstateRentalRevenue
/ us-gaap_StatementBusinessSegmentsAxis
= wre_RetailMember
0.21wre_PercentageOfRealEstateRentalRevenue
/ us-gaap_StatementBusinessSegmentsAxis
= wre_RetailMember
0.21wre_PercentageOfRealEstateRentalRevenue
/ us-gaap_StatementBusinessSegmentsAxis
= wre_RetailMember
Percentage of total income producing real estate assets                 0.19wre_PercentageOfRealEstateAssets
/ us-gaap_StatementBusinessSegmentsAxis
= wre_RetailMember
0.20wre_PercentageOfRealEstateAssets
/ us-gaap_StatementBusinessSegmentsAxis
= wre_RetailMember
 
Real estate rental revenue                 60,263us-gaap_RealEstateRevenueNet
/ us-gaap_StatementBusinessSegmentsAxis
= wre_RetailMember
56,189us-gaap_RealEstateRevenueNet
/ us-gaap_StatementBusinessSegmentsAxis
= wre_RetailMember
54,506us-gaap_RealEstateRevenueNet
/ us-gaap_StatementBusinessSegmentsAxis
= wre_RetailMember
Real estate expenses                 14,022us-gaap_CostOfRealEstateRevenue
/ us-gaap_StatementBusinessSegmentsAxis
= wre_RetailMember
13,768us-gaap_CostOfRealEstateRevenue
/ us-gaap_StatementBusinessSegmentsAxis
= wre_RetailMember
12,702us-gaap_CostOfRealEstateRevenue
/ us-gaap_StatementBusinessSegmentsAxis
= wre_RetailMember
Net operating income                 46,241wre_OperatingIncomeLossNet
/ us-gaap_StatementBusinessSegmentsAxis
= wre_RetailMember
42,421wre_OperatingIncomeLossNet
/ us-gaap_StatementBusinessSegmentsAxis
= wre_RetailMember
41,804wre_OperatingIncomeLossNet
/ us-gaap_StatementBusinessSegmentsAxis
= wre_RetailMember
Capital expenditures                 5,496wre_CapitalExpenditures
/ us-gaap_StatementBusinessSegmentsAxis
= wre_RetailMember
4,204wre_CapitalExpenditures
/ us-gaap_StatementBusinessSegmentsAxis
= wre_RetailMember
2,977wre_CapitalExpenditures
/ us-gaap_StatementBusinessSegmentsAxis
= wre_RetailMember
Total assets 385,174us-gaap_Assets
/ us-gaap_StatementBusinessSegmentsAxis
= wre_RetailMember
      344,207us-gaap_Assets
/ us-gaap_StatementBusinessSegmentsAxis
= wre_RetailMember
      385,174us-gaap_Assets
/ us-gaap_StatementBusinessSegmentsAxis
= wre_RetailMember
344,207us-gaap_Assets
/ us-gaap_StatementBusinessSegmentsAxis
= wre_RetailMember
355,585us-gaap_Assets
/ us-gaap_StatementBusinessSegmentsAxis
= wre_RetailMember
Multifamily [Member]                      
Segment Reporting Information [Line Items]                      
Real estate rental revenue as a percentage of total                 0.22wre_PercentageOfRealEstateRentalRevenue
/ us-gaap_StatementBusinessSegmentsAxis
= wre_MultifamilyMember
0.21wre_PercentageOfRealEstateRentalRevenue
/ us-gaap_StatementBusinessSegmentsAxis
= wre_MultifamilyMember
0.21wre_PercentageOfRealEstateRentalRevenue
/ us-gaap_StatementBusinessSegmentsAxis
= wre_MultifamilyMember
Percentage of total income producing real estate assets                 0.20wre_PercentageOfRealEstateAssets
/ us-gaap_StatementBusinessSegmentsAxis
= wre_MultifamilyMember
0.18wre_PercentageOfRealEstateAssets
/ us-gaap_StatementBusinessSegmentsAxis
= wre_MultifamilyMember
 
Real estate rental revenue                 62,258us-gaap_RealEstateRevenueNet
/ us-gaap_StatementBusinessSegmentsAxis
= wre_MultifamilyMember
54,496us-gaap_RealEstateRevenueNet
/ us-gaap_StatementBusinessSegmentsAxis
= wre_MultifamilyMember
52,887us-gaap_RealEstateRevenueNet
/ us-gaap_StatementBusinessSegmentsAxis
= wre_MultifamilyMember
Real estate expenses                 25,770us-gaap_CostOfRealEstateRevenue
/ us-gaap_StatementBusinessSegmentsAxis
= wre_MultifamilyMember
22,232us-gaap_CostOfRealEstateRevenue
/ us-gaap_StatementBusinessSegmentsAxis
= wre_MultifamilyMember
20,467us-gaap_CostOfRealEstateRevenue
/ us-gaap_StatementBusinessSegmentsAxis
= wre_MultifamilyMember
Net operating income                 36,488wre_OperatingIncomeLossNet
/ us-gaap_StatementBusinessSegmentsAxis
= wre_MultifamilyMember
32,264wre_OperatingIncomeLossNet
/ us-gaap_StatementBusinessSegmentsAxis
= wre_MultifamilyMember
32,420wre_OperatingIncomeLossNet
/ us-gaap_StatementBusinessSegmentsAxis
= wre_MultifamilyMember
Capital expenditures                 9,186wre_CapitalExpenditures
/ us-gaap_StatementBusinessSegmentsAxis
= wre_MultifamilyMember
10,153wre_CapitalExpenditures
/ us-gaap_StatementBusinessSegmentsAxis
= wre_MultifamilyMember
5,869wre_CapitalExpenditures
/ us-gaap_StatementBusinessSegmentsAxis
= wre_MultifamilyMember
Total assets 408,772us-gaap_Assets
/ us-gaap_StatementBusinessSegmentsAxis
= wre_MultifamilyMember
      309,117us-gaap_Assets
/ us-gaap_StatementBusinessSegmentsAxis
= wre_MultifamilyMember
      408,772us-gaap_Assets
/ us-gaap_StatementBusinessSegmentsAxis
= wre_MultifamilyMember
309,117us-gaap_Assets
/ us-gaap_StatementBusinessSegmentsAxis
= wre_MultifamilyMember
249,503us-gaap_Assets
/ us-gaap_StatementBusinessSegmentsAxis
= wre_MultifamilyMember
Corporate And Other [Member]                      
Segment Reporting Information [Line Items]                      
Real estate rental revenue                 0us-gaap_RealEstateRevenueNet
/ us-gaap_StatementBusinessSegmentsAxis
= us-gaap_CorporateAndOtherMember
0us-gaap_RealEstateRevenueNet
/ us-gaap_StatementBusinessSegmentsAxis
= us-gaap_CorporateAndOtherMember
0us-gaap_RealEstateRevenueNet
/ us-gaap_StatementBusinessSegmentsAxis
= us-gaap_CorporateAndOtherMember
Real estate expenses                 0us-gaap_CostOfRealEstateRevenue
/ us-gaap_StatementBusinessSegmentsAxis
= us-gaap_CorporateAndOtherMember
0us-gaap_CostOfRealEstateRevenue
/ us-gaap_StatementBusinessSegmentsAxis
= us-gaap_CorporateAndOtherMember
0us-gaap_CostOfRealEstateRevenue
/ us-gaap_StatementBusinessSegmentsAxis
= us-gaap_CorporateAndOtherMember
Net operating income                 0wre_OperatingIncomeLossNet
/ us-gaap_StatementBusinessSegmentsAxis
= us-gaap_CorporateAndOtherMember
0wre_OperatingIncomeLossNet
/ us-gaap_StatementBusinessSegmentsAxis
= us-gaap_CorporateAndOtherMember
0wre_OperatingIncomeLossNet
/ us-gaap_StatementBusinessSegmentsAxis
= us-gaap_CorporateAndOtherMember
Capital expenditures                 1,719wre_CapitalExpenditures
/ us-gaap_StatementBusinessSegmentsAxis
= us-gaap_CorporateAndOtherMember
162wre_CapitalExpenditures
/ us-gaap_StatementBusinessSegmentsAxis
= us-gaap_CorporateAndOtherMember
555wre_CapitalExpenditures
/ us-gaap_StatementBusinessSegmentsAxis
= us-gaap_CorporateAndOtherMember
Total assets $ 35,238us-gaap_Assets
/ us-gaap_StatementBusinessSegmentsAxis
= us-gaap_CorporateAndOtherMember
      $ 164,866us-gaap_Assets
/ us-gaap_StatementBusinessSegmentsAxis
= us-gaap_CorporateAndOtherMember
      $ 35,238us-gaap_Assets
/ us-gaap_StatementBusinessSegmentsAxis
= us-gaap_CorporateAndOtherMember
$ 164,866us-gaap_Assets
/ us-gaap_StatementBusinessSegmentsAxis
= us-gaap_CorporateAndOtherMember
$ 51,669us-gaap_Assets
/ us-gaap_StatementBusinessSegmentsAxis
= us-gaap_CorporateAndOtherMember