Quarterly report pursuant to Section 13 or 15(d)

Fair Value Disclosures - Financial Assets and Liabilities Measured at Fair Value (Details)

v2.4.1.9
Fair Value Disclosures - Financial Assets and Liabilities Measured at Fair Value (Details) (USD $)
In Thousands, unless otherwise specified
Mar. 31, 2015
Dec. 31, 2014
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Assets: SERP $ 2,459wre_FairValueAssetsMeasuredOnRecurringBasisSupplementalExecutiveRetirementProgram $ 2,778wre_FairValueAssetsMeasuredOnRecurringBasisSupplementalExecutiveRetirementProgram
Level 1 [Member]    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Assets: SERP 0wre_FairValueAssetsMeasuredOnRecurringBasisSupplementalExecutiveRetirementProgram
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel1Member
0wre_FairValueAssetsMeasuredOnRecurringBasisSupplementalExecutiveRetirementProgram
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel1Member
Level 2 [Member]    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Assets: SERP 2,459wre_FairValueAssetsMeasuredOnRecurringBasisSupplementalExecutiveRetirementProgram
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel2Member
2,778wre_FairValueAssetsMeasuredOnRecurringBasisSupplementalExecutiveRetirementProgram
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel2Member
Level 3 [Member]    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Assets: SERP $ 0wre_FairValueAssetsMeasuredOnRecurringBasisSupplementalExecutiveRetirementProgram
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel3Member
$ 0wre_FairValueAssetsMeasuredOnRecurringBasisSupplementalExecutiveRetirementProgram
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel3Member