XML 21 R47.htm IDEA: XBRL DOCUMENT v2.3.0.15

Stock Based Compensation (Schedules Of Fair Market Value Of Restricted Shares) (Details) (USD $) In Thousands	9 Months Ended
	Sep. 30, 2011
Relative TSR [Member] | Restricted Share Awards [Member]
Grant Date Fair Value	$ 1,066
Relative TSR [Member] | Unrestricted Share Awards [Member]
Grant Date Fair Value	1,066
Absolute TSR [Member] | Restricted Share Awards [Member]
Grant Date Fair Value	365
Absolute TSR [Member] | Unrestricted Share Awards [Member]
Grant Date Fair Value	$ 365

X

- Definition

Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period Grant Date Fair Value

+ Details

Name:	wre_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodGrantDateFairValue
Namespace Prefix:	wre
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration