Annual report pursuant to Section 13 and 15(d)

Accounting Policies Acquired finite-lived intangible assets (Details)

v2.4.1.9
Accounting Policies Acquired finite-lived intangible assets (Details) (Leases, Acquired-in-Place [Member], USD $)
In Thousands, unless otherwise specified
Dec. 31, 2014
Leases, Acquired-in-Place [Member]
 
Impaired Intangible Assets [Line Item]  
Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months $ 17,260us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths
/ wre_ComponentsOfFairValueOfInPlaceLeasesAxis
= us-gaap_LeasesAcquiredInPlaceMember
Finite-Lived Intangible Assets, Amortization Expense, Year Two 13,234us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo
/ wre_ComponentsOfFairValueOfInPlaceLeasesAxis
= us-gaap_LeasesAcquiredInPlaceMember
Finite-Lived Intangible Assets, Amortization Expense, Year Three 9,465us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree
/ wre_ComponentsOfFairValueOfInPlaceLeasesAxis
= us-gaap_LeasesAcquiredInPlaceMember
Finite-Lived Intangible Assets, Amortization Expense, Year Four 5,844us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour
/ wre_ComponentsOfFairValueOfInPlaceLeasesAxis
= us-gaap_LeasesAcquiredInPlaceMember
Finite-Lived Intangible Assets, Amortization Expense, Year Five $ 3,358us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive
/ wre_ComponentsOfFairValueOfInPlaceLeasesAxis
= us-gaap_LeasesAcquiredInPlaceMember