Elme Communities (ELME) 10-Q 5 Aug 14 2014 Q2 Quarterly report Financial data

Document_and_Entity_Informatio

Document and Entity Information	6 Months Ended
	Jun. 30, 2014	Aug. 01, 2014
Document and Entity Information [Abstract]	'	'
Document Type	'10-Q	'
Amendment Flag	'false	'
Document Period End Date	30-Jun-14	'
Document Fiscal Year Focus	'2014	'
Document Fiscal Period Focus	'Q2	'
Entity Registrant Name	'WASHINGTON REAL ESTATE INVESTMENT TRUST	'
Entity Central Index Key	'0000104894	'
Current Fiscal Year End Date	'--12-31	'
Entity Filer Category	'Large Accelerated Filer	'
Entity Common Stock, Shares Outstanding	'	66,631,386

Consolidated_Balance_Sheets

Consolidated Balance Sheets (USD $)	Jun. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Assets	'	'
Land	$519,859	$426,575
Income producing property	1,853,982	1,675,652
Real estate investment property, at cost	2,373,841	2,102,227
Accumulated depreciation and amortization	-600,171	-565,342
Net income producing property	1,773,670	1,536,885
Properties under development or held for future development	83,970	61,315
Total real estate held for investment, net	1,857,640	1,598,200
Investment in real estate sold or held for sale, net	0	79,901
Cash and cash equivalents	23,009	130,343
Restricted cash	11,369	9,189
Rents and other receivables, net of allowance for doubtful accounts of $5,765 and $6,783, respectively	55,583	48,756
Prepaid expenses and other assets	112,548	105,004
Other assets related to properties sold or held for sale	0	4,100
Total assets	2,060,149	1,975,493
Liabilities	'	'
Notes payable	746,956	846,703
Mortgage notes payable	406,975	294,671
Lines of credit	0	0
Accounts payable and other liabilities	59,719	51,742
Advance rents	13,172	13,529
Tenant security deposits	8,686	7,869
Liabilities related to properties sold or held for sale	0	1,533
Total liabilities	1,235,508	1,216,047
Shareholders’ equity	'	'
Preferred shares; $0.01 par value; 10,000 shares authorized; no shares issued or outstanding	0	0
Shares of beneficial interest; $0.01 par value; 100,000 shares authorized: 66,636 and 66,531 shares issued and outstanding at June 30, 2014 and December 31, 2013, respectively	666	665
Additional paid in capital	1,152,647	1,151,174
Distributions in excess of net income	-331,373	-396,880
Total shareholders’ equity	821,940	754,959
Noncontrolling interests in subsidiaries	2,701	4,487
Total equity	824,641	759,446
Total liabilities and equity	$2,060,149	$1,975,493

Consolidated_Balance_Sheets_Pa

Consolidated Balance Sheets (Parenthetical) (USD $)	Jun. 30, 2014	Dec. 31, 2013
In Thousands, except Per Share data, unless otherwise specified
Statement of Financial Position [Abstract]	'	'
Rents and other receivables, allowance for doubtful accounts	$5,765	$6,783
Preferred Stock, Par or Stated Value Per Share (in dollars per share)	$0.01	$0.01
Preferred Stock, Shares Authorized (in shares)	10,000	10,000
Preferred Stock, Shares Issued (in shares)	0	0
Preferred Stock, Shares Outstanding (in shares)	0	0
Shares of beneficial interest, par value (in dollars per share)	$0.01	$0.01
Shares of beneficial interest, shares authorized (in shares)	100,000	100,000
Shares of beneficial interest, shares issued (in shares)	66,636	66,531
Shares of beneficial interest, shares outstanding (in shares)	66,636	66,531

Condensed_Consolidated_Stateme

Condensed Consolidated Statements of Income (USD $)	3 Months Ended		6 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Revenue	'	'	'	'
Real estate rental revenue	$72,254	$65,915	$140,865	$130,475
Expenses	'	'	'	'
Real estate expenses	25,528	23,670	51,870	46,224
Depreciation and amortization	24,401	21,037	47,154	42,160
Acquisition costs	1,933	87	4,978	300
General and administrative	4,828	4,005	9,257	7,867
Operating Expenses	56,690	48,799	113,259	96,551
Gain on sale of real estate	570	0	570	0
Real estate operating income	16,134	17,116	28,176	33,924
Other income (expense)	'	'	'	'
Interest expense	-14,985	-15,824	-29,515	-32,014
Other income	219	246	442	485
Total other income (expense)	-14,766	-15,578	-29,073	-31,529
Income (loss) from continuing operations	1,368	1,538	-897	2,395
Discontinued operations:	'	'	'	'
Income from operations of properties sold or held for sale	0	3,725	546	7,008
(Loss) gain on sale of real estate	-288	0	105,985	3,195
Net income	1,080	5,263	105,634	12,598
Net Income (Loss) Attributable to Noncontrolling Interest	-7	0	-7	0
Net income attributable to the controlling interests	$1,087	$5,263	$105,641	$12,598
Basic net income per share:	'	'	'	'
Continuing operations (in dollars per share)	$0.02	$0.02	($0.01)	$0.04
Discontinued operations (in dollars per share)	$0	$0.06	$1.59	$0.15
Net income per share (in dollars per share)	$0.02	$0.08	$1.58	$0.19
Diluted net income per share:	'	'	'	'
Continuing operations (in dollars per share)	$0.02	$0.02	($0.01)	$0.04
Discontinued operations (in dollars per share)	$0	$0.06	$1.59	$0.15
Net income per share (in dollars per share)	$0.02	$0.08	$1.58	$0.19
Weighted average shares outstanding - basic (in shares)	66,732	66,405	66,718	66,399
Weighted average shares outstanding - diluted (in shares)	66,761	66,556	66,718	66,537
Dividends declared per share (in dollars per share)	$0.30	$0.30	$0.60	$0.60

Consolidated_Statements_of_Sha

Consolidated Statements of Shareholders' Equity (USD $)	Total	Shares of Beneficial Interest at Par Value [Member]	Additional Paid in Capital [Member]	Distributions in Excess of Net Income Attributable to the Controlling Interests [Member]	Total Shareholders' Equity [Member]	Noncontrolling Interests in Subsidiaries [Member]
In Thousands, unless otherwise specified
Balance at Dec. 31, 2013	$759,446	$665	$1,151,174	($396,880)	$754,959	$4,487
Balance (in shares) at Dec. 31, 2013	'	66,531	'	'	'	'
Increase (Decrease) in Stockholders' Equity [Roll Forward]	'	'	'	'	'	'
Net income attributable to the controlling interests	105,641	'	'	105,641	105,641	'
Net Income (Loss) Attributable to Noncontrolling Interest	-7	'	'	'	'	-7
Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders	-1,784	'	'	'	'	-1,784
Contributions From Noncontrolling Interest	5	'	'	'	'	5
Dividends	-40,134	'	'	-40,134	-40,134	'
Share grants, net of share grant amortization and forfeitures	1,474	1	1,473	'	1,474	'
Share grants, net of share grant amortization and forfeitures (in shares)	'	105	'	'	'	'
Balance at Jun. 30, 2014	$824,641	$666	$1,152,647	($331,373)	$821,940	$2,701
Balance (in shares) at Jun. 30, 2014	'	66,636	'	'	'	'

Consolidated_Statements_of_Cas

Consolidated Statements of Cash Flows (USD $)	6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013
Cash flows from operating activities	'	'
Net income	$105,634	$12,598
Adjustments to reconcile net income to net cash provided by operating activities:	'	'
Depreciation and amortization, including amounts in discontinued operations	47,154	51,106
Provision for losses on accounts receivable	727	2,291
Net gain on sale of real estate	-106,555	-3,195
Amortization of share grants, net	2,505	2,390
Amortization of debt premiums, discounts and related financing costs	1,754	1,989
Changes in operating other assets	8,035	1,515
Changes in operating other liabilities	-4,061	-2,671
Net cash provided by operating activities	39,123	62,993
Cash flows from investing activities	'	'
Real estate acquisitions, net	-154,126	0
Net cash received for sale of real estate	190,864	15,161
Capital improvements to real estate	-28,947	-25,069
Development in progress	-13,573	-6,505
Real estate deposits, net	-1,250	-3,900
Increase (Decrease) in Restricted Cash	-95	0
Non-real estate capital improvements	-41	-109
Net cash used in investing activities	-7,168	-20,422
Cash flows from financing activities	'	'
Line of credit borrowings, net	0	75,000
Dividends paid	-40,134	-40,099
Contributions from noncontrolling interests	5	390
Distributions to noncontrolling interests	-3,454	0
Payment of financing costs	-660	0
Principal payments – mortgage notes payable	-1,794	-31,267
Borrowings under construction loan	6,748	0
Notes payable repayments	-100,000	-60,000
Net cash used in financing activities	-139,289	-55,976
Net decrease in cash and cash equivalents	-107,334	-13,405
Cash and cash equivalents at beginning of period	130,343	19,324
Cash and cash equivalents at end of period	23,009	5,919
Supplemental disclosure of cash flow information:	'	'
Cash paid for interest, net of amounts capitalized	29,835	32,643
Cash paid for income taxes, net of refunds	156	4
(Increase) decrease in accrued capital improvements and development costs	-9,082	683
Mortgage notes payable assumed in connection with the acquisition of real estate	$100,861	$0

Nature_of_Business

Nature of Business	6 Months Ended
	Jun. 30, 2014
Nature Of Business [Abstract]	'
Nature of Business	'
	NOTE 1: NATURE OF BUSINESS
	Washington Real Estate Investment Trust (“Washington REIT”), a Maryland real estate investment trust, is a self-administered, self-managed equity real estate investment trust, successor to a trust organized in 1960. Our business consists of the ownership and operation of income-producing real estate properties in the greater Washington metro region. We own a diversified portfolio of office buildings, multifamily buildings and retail centers.
	Federal Income Taxes
	We believe that we qualify as a real estate investment trust (“REIT”) under Sections 856-860 of the Internal Revenue Code and intend to continue to qualify as such. To maintain our status as a REIT, we are required to distribute 90% of our ordinary taxable income to our shareholders. When selling properties, we have the option of (a) reinvesting the sales proceeds of properties sold, allowing for a deferral of income taxes on the sale, (b) paying out capital gains to the shareholders with no tax to Washington REIT or (c) treating the capital gains as having been distributed to the shareholders, paying the tax on the gain deemed distributed and allocating the tax paid as a credit to the shareholders. During the first quarter of 2014, we closed on Transactions III (for the sale of Woodburn Medical Park I and II) and IV (for the sale of Prosperity Medical Center I, II and III) of the Medical Office Portfolio sale for an aggregate contract sales price of $193.6 million. We have reinvested a portion of the Medical Office Portfolio sales proceeds in replacement properties through a deferred tax exchange.
	Generally, and subject to our ongoing qualification as a REIT, no provisions for income taxes are necessary except for taxes on undistributed REIT taxable income and taxes on the income generated by our taxable REIT subsidiaries (“TRSs”). Our TRSs are subject to corporate federal and state income tax on their taxable income at regular statutory rates or as calculated under the alternative minimum tax, as appropriate. There were no material income tax provisions or material net deferred income tax items for our TRSs for the three and six months ended June 30, 2014 and 2013.

Summary_of_Significant_Account

Summary of Significant Accounting Policies and Basis of Presentation	6 Months Ended
	Jun. 30, 2014
Accounting Policies [Abstract]	'
Summary of Significant Accounting Policies and Basis of Presentation	'
	NOTE 2: SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES AND BASIS OF PRESENTATION
	Significant Accounting Policies
	We have prepared our consolidated financial statements using the accounting policies described in our Annual Report on Form 10-K for the year ended December 31, 2013.
	New Accounting Pronouncements
	In April 2014, the Financial Accounting Standards Board ("FASB") issued ASU No. 2014-08, Reporting Discontinued Operations and Disclosures of Disposals of Components of an Entity, which changes the requirements for reporting discontinued operations. Specifically, under this ASU only those disposals of components of an entity that represent a strategic shift that has (or will have) a major effect on an entity’s operations and financial results will be reported as discontinued operations in the financial statements. The primary impact of this ASU is that we are no longer required to report the disposal of every operating property in discontinued operations. Adoption of this ASU is required for all disposals (or classifications as held for sale) of components of an entity that occur within annual periods beginning on or after after December 15, 2014, and interim periods within those years. Early adoption is permitted, but only for disposals (or classifications as held for sale) that have not been reported in financial statements previously issued or available for issuance. We early adopted this ASU effective for the first quarter of 2014.
	In June 2014, the FASB issued ASU No. 2014-09, Revenue from Contracts with Customers, which creates a single source of revenue guidance. The new standard provides accounting guidance for all revenue arising from contracts with customers and affects all entities that enter into contracts to provide goods or services to their customers (unless the contracts are in the scope of other U.S. generally accepted accounting principles (“GAAP”) requirements, such as the leasing literature). The guidance also provides a model for the measurement and recognition of gains and losses on the sale of certain nonfinancial assets, such as property and equipment, including real estate. The new standard is effective for public entities for fiscal years beginning after December 15, 2016 and for interim periods therein. Early adoption is not permitted for public entities. We are currently evaluating the impact the new standard may have on Washington REIT.
	Principles of Consolidation and Basis of Presentation
	The accompanying unaudited consolidated financial statements include the consolidated accounts of Washington REIT, our majority-owned subsidiaries and entities in which Washington REIT has a controlling interest, including where Washington REIT has been determined to be a primary beneficiary of a variable interest entity (“VIE”). See note 3 for additional information on the properties for which there is a noncontrolling interest. All intercompany balances and transactions have been eliminated in consolidation.
	We have prepared the accompanying unaudited financial statements pursuant to the rules and regulations of the Securities and Exchange Commission. Certain information and note disclosures normally included in annual financial statements prepared in accordance with GAAP have been condensed or omitted pursuant to those rules and regulations, although we believe that the disclosures made are adequate to make the information presented not misleading. In addition, in the opinion of management, all adjustments (consisting of normal recurring accruals) considered necessary for a fair presentation of the results for the periods presented have been included. These unaudited financial statements should be read in conjunction with the financial statements and notes included in our Annual Report on Form 10-K for the year ended December 31, 2013.
	Within these notes to the financial statements, we refer to the three months ended June 30, 2014 and June 30, 2013 as the “2014 Quarter” and the “2013 Quarter,” respectively, and the six months ended June 30, 2014 and June 30, 2013 as the “2014 Period” and the “2013 Period,” respectively.
	Use of Estimates in the Financial Statements
	The preparation of financial statements in conformity with GAAP requires management to make certain estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates.
	Reclassifications
	Certain prior period amounts have been reclassified to conform to the current period presentation due to the reclassification of certain properties as discontinued operations (see note 3).

Real_Estate

Real Estate	6 Months Ended
	Jun. 30, 2014
Real Estate [Abstract]	'
Real Estate	'
	NOTE 3: REAL ESTATE
	Acquisitions
	Washington REIT acquired the following properties during the 2014 Period:
							Rentable			Contract
										Purchase Price
	Acquisition Date		Property Name		Type		Square Feet			(in thousands)
	February 21, 2014		Yale West (216 units)		Multifamily		N/A			$	73,000
	March 26, 2014		The Army Navy Club Building		Office		108,000			79,000
	May 1, 2014		1775 Eye Street, NW		Office		185,000			104,500
							293,000			$	256,500
	The results of operations from the acquired operating properties are included in the consolidated statements of income as of their acquisition dates.
	The revenue and earnings of our 2014 acquisitions are as follows (amounts in thousands):
		Three Months Ended June 30, 2014				Six Months Ended June 30, 2014
	Real estate rental revenue	$	4,598			$	5,355
	Net loss	(1,297		)		(2,112		)
	We record the acquired physical assets (land, building and tenant improvements), and in-place leases (absorption, tenant origination costs, leasing commissions, and net lease intangible assets/liabilities), and any other assets or liabilities at their fair values.
	We have recorded the total purchase price of the above acquisitions as follows (in thousands):
	Land	$	93,567
	Buildings	141,456
	Tenant origination costs	8,354
	Leasing commissions/absorption costs	12,847
	Net lease intangible assets	7,331
	Net lease intangible liabilities	(2,122		)
	Fair value of assumed mortgages	(107,125		)
	Furniture fixtures and equipment	932
	Total	$	155,240
	The weighted remaining average life for the 2014 acquisition components above, other than land and building, are 74 months for tenant origination costs, 57 months for leasing commissions/absorption costs, 75 months for net lease intangible assets and 85 months for net lease intangible liabilities.
	The difference in the total contract purchase price of $256.5 million for the 2014 acquisitions and the acquisition cost per the consolidated statement of cash flows of $154.1 million is primarily due to the assumption of two mortgage notes secured by Yale West and The Army Navy Club Building for an aggregate $100.9 million and the payment of a $3.6 million deposit for Yale West in 2013, partially offset by a credit to the seller for building renovations at 1775 Eye Street, NW for $1.9 million.
	The following unaudited pro-forma combined condensed statements of operations are for the 2014 and 2013 Quarters and Periods as if the above described acquisitions had occurred at the beginning of the period of acquisition and the same period in the year prior to acquisition. The unaudited pro-forma information does not purport to be indicative of the results that actually would have occurred if the acquisitions had been in effect for the 2014 and 2013 Quarters and Periods. The unaudited data presented is in thousands, except per share data.
		Three Months Ended June 30,								Six Months Ended June 30,
		2014				2013				2014				2013
	Real estate rental revenue	$	72,863			$	71,122			$	145,867			$	140,833
	Income (loss) from continuing operations	1,335				(108		)		(1,967		)		(879		)
	Net income	1,047				3,617				104,564				9,324
	Diluted earnings per share	0.02				0.05				1.57				0.14
	Redevelopment
	In the office segment, we have an active redevelopment project to renovate 7900 Westpark Drive. Our total investment in the renovation at 7900 Westpark Drive is expected to be $35.0 million. As of June 30, 2014 and December 31, 2013, we had invested $15.2 million and $3.6 million, respectively, in the renovation. We anticipate completion during the first quarter of 2015.
	Variable Interest Entities
	In June 2011, we executed a joint venture operating agreement with a real estate development company to develop The Maxwell, a mid-rise multifamily property at 650 North Glebe Road in Arlington, Virginia. We estimate the total cost of the project to be $49.9 million. During the first quarter of 2013, we secured third-party debt financing for approximately 70% of the project's cost. Washington REIT is the 90% owner of the joint venture and will have management and leasing responsibilities when the project is completed and stabilized (defined as 90% of the residential units leased). The real estate development company owns 10% of the joint venture and is responsible for the development and construction of the property. The joint venture currently expects to complete this development project during the fourth quarter of 2014.
	In November 2011, we executed a joint venture operating agreement with a real estate development company to develop a high-rise multifamily property at 1225 First Street (formerly 1219 First Street) in Alexandria, Virginia. We estimate the total cost of the project to be $95.3 million, with approximately 70% of the project financed with debt. Washington REIT is the 95% owner of the joint venture and will have management and leasing responsibilities if the project is completed and stabilized. The real estate development company owns 5% of the joint venture and is responsible for the development and construction of the property. In the first quarter of 2013, we decided to delay commencement of construction due to market conditions and concerns of oversupply. We continue to reassess this project on a periodic basis going forward.
	We have determined that The Maxwell and 1225 First Street joint ventures are VIE's primarily based on the fact that the equity investment at risk is not sufficient to permit either entity to finance its activities without additional financial support. We expect that 70% of the total development costs for each project would be financed through debt. We have also determined that Washington REIT is the primary beneficiary of each VIE due to the fact that Washington REIT is providing 90% to 95% of the equity contributions and will manage each property after stabilization.
	We include the joint venture land acquisitions on our consolidated balance sheets in properties under development or held for future development. As of June 30, 2014 and December 31, 2013, the land and capitalized development costs are as follows (in thousands):
		June 30, 2014				December 31, 2013
	The Maxwell (formerly 650 North Glebe Road)	$	38,423			$	27,343
	1225 First Street	20,797				20,788
	As of June 30, 2014 and December 31, 2013, the accounts payable and accrued liabilities related to the joint ventures are as follows (in thousands):
		June 30, 2014				December 31, 2013
	The Maxwell	$	5,195			$	1,785
	1225 First Street	18				39
	On February 21, 2013, Washington REIT, through its consolidated joint venture to develop The Maxwell, entered into a construction loan agreement with Citizens Bank for $33.0 million. The loan bears interest at LIBOR plus 2.15%, which decreases to LIBOR plus 2.0% upon completion of construction and the joint venture not being in default. The loan matures on February 21, 2016, with two one year extension options exercisable by the joint venture, subject to fees and compliance with certain provisions in the loan agreement. As of June 30, 2014 and December 31, 2013, the consolidated joint venture had $14.0 million and $7.3 million, respectively, outstanding on this construction loan agreement.
	Discontinued Operations
	We dispose of assets that no longer meet our long-term strategy or return objectives and where market conditions for sale are favorable. The proceeds from the sales may be reinvested into other properties, used to fund development operations or to support other corporate needs, or distributed to our shareholders. Properties are considered held for sale when they meet the criteria specified (see "Discontinued Operations" in note 2 of the consolidated financial statements included in Washington REIT's Annual Report on Form 10-K for the year ended December 31, 2013). Depreciation on these properties is discontinued at that time, but operating revenues, other operating expenses and interest continue to be recognized until the date of sale.
	In September 2013, we entered into four separate purchase and sale agreements to effectuate the sale of our entire medical office segment (including land held for development at 4661 Kenmore Avenue) and two office buildings (Woodholme Center and 6565 Arlington Boulevard) for an aggregate purchase price of $500.8 million. The sale was structured as four transactions. Transactions I and II closed in November 2013 and Transactions III and IV closed in January 2014.
	The results of our medical office segment are summarized as follows (amounts in thousands, except per share data):
		Three Months Ended June 30,								Six Months Ended June 30,
		2014				2013				2014				2013
	Real estate rental revenue	$	—			$	11,010			$	892			$	22,039
	Net income	—				3,439				546				6,260
	Basic net income per share	—				0.05				0.01				0.09
	Diluted net income per share	—				0.05				0.01				0.09
	We sold the following properties in 2014 and 2013:
	Property Name		Segment		Rentable Square Feet			Contract				Gain on Sale
								Purchase  Price				(in thousands)
(in thousands)
Medical Office Portfolio Transactions III & IV (1)		Medical Office		427,000			$	193,561			$	105,985
5740 Columbia Road (2)		Retail		3,000			1,600				570
		Total 2014		430,000			$	195,161			$	106,555
Atrium Building		Office		79,000			$	15,750			$	3,195
Medical Office Portfolio Transactions I & II (3)		Medical Office / Office		1,093,000			307,189				18,949
		Total 2013		1,172,000			$	322,939			$	22,144
(1)	Woodburn Medical Park I and II and Prosperity Medical Center I, II and III.
(2) This property is classified as continuing operations in accordance with ASU No. 2014-08 (see note 2).
(3)	2440 M Street, 15001 Shady Grove Road, 15505 Shady Grove Road, 19500 at Riverside Park (formerly Lansdowne Medical Office Building), 9707 Medical Center Drive, CentreMed I and II, 8301 Arlington Boulevard, Sterling Medical Office Building, Shady Grove Medical Village II, Alexandria Professional Center, Ashburn Farm Office Park I, Ashburn Farm Office Park II, Ashburn Farm Office Park III, Woodholme Medical Office Building, two office properties (6565 Arlington Boulevard and Woodholme Center) and undeveloped land at 4661 Kenmore Avenue.
As of June 30, 2014 and December 31, 2013, investment in real estate for properties sold or held for sale, all of which were in the medical office segment, was as follows (in thousands):
	30-Jun-14				December 31, 2013
Investment in real estate sold or held for sale	$	—			$	125,967
Less accumulated depreciation	—				(46,066		)
Investment in real estate sold or held for sale, net	$	—			$	79,901
Income from operations of properties sold or held for sale for the three and six months ended June 30, 2014 and 2013 was as follows (in thousands):
	Three Months Ended June 30,								Six Months Ended June 30,
	2014				2013				2014				2013
Real estate rental revenue	$	—			$	12,357			$	892			$	25,068
Real estate expenses	—				(3,759		)		(346		)		(8,457		)
Depreciation and amortization	—				(4,545		)		—				(8,947		)
Interest expense	—				(328		)		—				(656		)
Income from operations of properties sold or held for sale	$	—			$	3,725			$	546			$	7,008
Income from operations of properties sold or held for sale by property for the three and six months ended June 30, 2014 and 2013 was as follows (in thousands):
				Three Months Ended June 30,								Six Months Ended June 30,
Property		Segment		2014				2013				2014				2013
Atrium Building		Office		$	—			$	—			$	—			$	185
Medical Office Portfolio		Medical Office / Office		—				3,725				546				6,823
				$	—			$	3,725			$	546			$	7,008

Mortgage_Notes_Payable

Mortgage Notes Payable	6 Months Ended
	Jun. 30, 2014
Mortgage Notes Payable [Abstract]	'
Mortgage Notes Payable	'
	NOTE 4: MORTGAGE NOTES PAYABLE
	In February 2014, we assumed a $48.2 million mortgage note as partial consideration for the acquisition of Yale West. This mortgage note bears interest at 5.55% per annum. The fair value interest rate on this mortgage note is 3.75% based on quotes obtained for similar loans. We recorded the mortgage note at its estimated fair value of $54.0 million. Principal and interest are payable monthly until January 1, 2052, at which time all unpaid principal and interest are payable in full. The loan may be prepaid, without penalty, on January 31, 2022 or thereafter on the last business day of the month until maturity, with thirty days prior written notice to the lender.
	In March 2014, we assumed a $52.7 million mortgage note as partial consideration for acquisition of The Army Navy Club Building. This mortgage note bears interest at 3.45% per annum. The fair value interest rate on this mortgage note is 3.18% based on quotes obtained for similar loans. We recorded the mortgage at its estimated fair value of $53.2 million. Principal and interest are payable monthly until May 1, 2017, at which time all unpaid principal and interest are payable in full.

Unsecured_Lines_of_Credit_Paya

Unsecured Lines of Credit Payable	6 Months Ended
	Jun. 30, 2014
Unsecured Debt [Abstract]	'
Unsecured Lines Of Credit Payable	'
	NOTE 5: UNSECURED LINES OF CREDIT PAYABLE
	As of June 30, 2014, we maintained a $100.0 million unsecured line of credit maturing in June 2015 ("Credit Facility No. 1") and a $400.0 million unsecured line of credit maturing in July 2016 ("Credit Facility No. 2"). Credit Facilities No. 1 and No. 2 have accordion features that allow us to increase the facilities to $200.0 million and $600.0 million, respectively, subject to additional lender commitments.
	The amounts of these lines of credit unused and available at June 30, 2014 are as follows (in thousands):
		Credit Facility		Credit Facility
		No. 1		No. 2
	Committed capacity	$	100,000	$	400,000
	Borrowings outstanding	—		—
	Unused and available	$	100,000	$	400,000
	We had no borrowings and no repayments on the unsecured lines of credit during the 2014 Period.

Notes_Payable

Notes Payable	6 Months Ended
	Jun. 30, 2014
Notes Payable [Abstract]	'
Notes Payable	'
	NOTE 6: NOTES PAYABLE
	We repaid without penalty the $100.0 million of our 5.25% unsecured notes on their due date of January 15, 2014, using proceeds from the sale of the Medical Office Portfolio.

Stock_Based_Compensation

Stock Based Compensation	6 Months Ended
	Jun. 30, 2014
Share-based Compensation [Abstract]	'
Stock Based Compensation	'
	NOTE 7: STOCK BASED COMPENSATION
	Washington REIT maintains short-term ("STIP") and long-term ("LTIP") incentive plans that allow for stock-based awards to officers and non-officer employees. Stock based awards are provided to officers and non-officer employees, as well as trustees, under the Washington Real Estate Investment Trust 2007 Omnibus Long-Term Incentive Plan which allows for awards in the form of restricted shares, restricted share units, options and other awards up to an aggregate of 2,000,000 shares over the ten year period in which the plan will be in effect. Restricted share units are converted into shares of our stock upon full vesting through the issuance of new shares.
	During the 2014 Period, the Board of Trustees adopted a new STIP and new LTIP for executive officers. Regarding the new STIP, the changes from the prior STIP primarily removed the 15% service-only component of the award, maintaining an award payable 50% in cash and 50% in stock. The new LTIP is based entirely on total shareholder return during a defined three-year period. The LTIP was also converted from a single three-year plan structure to a “rolling” structure in which a new three-year plan is commenced each year. The vesting at the end of the performance period was modified to be 75% at the end of the performance period and 25% one year thereafter. In addition, during the transition period to the new LTIP, the Board of Trustees awarded similar transition awards with defined performance periods of one and two years and modified vesting to account for the transition.
	Total Compensation Expense
	Total compensation expense recognized in the consolidated financial statements for all outstanding share based awards was $1.4 million and $1.4 million for the 2014 and 2013 Quarters, respectively, and $2.5 million and $2.4 million for the 2014 and 2013 Periods, respectively.
	Restricted Share Awards
	The total fair values of restricted share awards vested was $0.7 million for the 2014 and 2013 Periods.
	The total unvested restricted share awards at June 30, 2014 was 222,469 shares, which had a weighted average grant date fair value of $25.41 per share. As of June 30, 2014, the total compensation cost related to unvested restricted share awards was $2.4 million, which we expect to recognize over a weighted average period of 18 months.

Fair_Value_Disclosures

Fair Value Disclosures	6 Months Ended
	Jun. 30, 2014
Fair Value Disclosures [Abstract]	'
Fair Value Disclosures	'
	NOTE 8: FAIR VALUE DISCLOSURES
	Assets and Liabilities Measured at Fair Value
	For assets and liabilities measured at fair value on a recurring basis, quantitative disclosures about the fair value measurements are required to be disclosed separately for each major category of assets and liabilities, as follows:
	Level 1: Quoted prices in active markets for identical assets
	Level 2: Significant other observable inputs
	Level 3: Significant unobservable inputs
	The only assets or liabilities we had at June 30, 2014 and December 31, 2013 that are recorded at fair value on a recurring basis are the assets held in the Supplemental Executive Retirement Program (“SERP”). We base the valuations related to this asset on the observable market values of the investments that comprise the SERP (Level 2 inputs).
	The fair values of these assets at June 30, 2014 and December 31, 2013 were as follows (in thousands):
		June 30, 2014								December 31, 2013
		Fair		Level 1		Level 2		Level 3		Fair		Level 1		Level 2		Level 3
		Value								Value
	Assets:
	SERP	$	3,606	$	—	$	3,606	$	—	$	3,290	$	—	$	3,290	$	—
	Financial Assets and Liabilities Not Measured at Fair Value
	The following disclosures of estimated fair value were determined by management using available market information and established valuation methodologies, including discounted cash flow. Many of these estimates involve significant judgment. The estimated fair value disclosed may not necessarily be indicative of the amounts we could realize on disposition of the financial instruments. The use of different market assumptions or estimation methodologies could have an effect on the estimated fair value amounts. In addition, fair value estimates are made at a point in time and thus, estimates of fair value subsequent to June 30, 2014 may differ significantly from the amounts presented.
	Following is a summary of significant methodologies used in estimating fair values and a schedule of fair values at June 30, 2014.
	Cash and Cash Equivalents and Restricted Cash
	Cash and cash equivalents and restricted cash include cash and commercial paper with original maturities of less than 90 days, which are valued at the carrying value, which approximates fair value due to the short maturity of these instruments (Level 1 inputs).
	Notes Receivable
	We acquired a note receivable ("2445 M Street note") in 2008 with the purchase of 2445 M Street. We estimate the fair value of the 2445 M Street note based on a discounted cash flow methodology using market discount rates (Level 3 inputs).
	Debt
	Mortgage notes payable consist of instruments in which certain of our real estate assets are used for collateral. We estimate the fair value of the mortgage notes payable by discounting the contractual cash flows at a rate equal to the relevant treasury rates (with respect to the timing of each cash flow) plus credit spreads estimated through independent comparisons to real estate assets or loans with similar characteristics. Lines of credit payable consist of bank facilities which we use for various purposes including working capital, acquisition funding or capital improvements. The lines of credit advances are priced at a specified rate plus a spread. We estimate the market value based on a comparison of the spreads of the advances to market given the adjustable base rate. We estimate the fair value of the notes payable by discounting the contractual cash flows at a rate equal to the relevant treasury rates (with respect to the timing of each cash flow) plus credit spreads derived using the relevant securities’ market prices. We classify these fair value measurements as Level 3 as we use significant unobservable inputs and management judgment due to the absence of quoted market prices.
	As of June 30, 2014 and December 31, 2013, the carrying values and estimated fair values of our financial instruments were as follows (in thousands):
		June 30, 2014				December 31, 2013
		Carrying Value		Fair Value		Carrying Value		Fair Value
	Cash and cash equivalents	$	23,009	$	23,009	$	130,343	$	130,343
	Restricted cash	11,369		11,369		9,189		9,189
	2445 M Street note	5,517		6,982		6,070		6,803
	Mortgage notes payable	406,975		424,617		294,671		313,476
	Notes payable	746,956		790,961		846,703		856,171

Earnings_per_Common_Share

Earnings per Common Share	6 Months Ended
	Jun. 30, 2014
Earnings Per Share [Abstract]	'
Earnings per Common Share	'
	NOTE 9: EARNINGS PER COMMON SHARE
	We determine “Basic earnings per share” using the two-class method as our unvested restricted share awards and units have non-forfeitable rights to dividends and are therefore considered participating securities. We compute basic earnings per share by dividing net income attributable to the controlling interest less the allocation of earnings to unvested restricted share awards and units by the weighted-average number of common shares outstanding for the period.
	We also determine “Diluted earnings per share” under the two-class method with respect to the unvested restricted share awards. We further evaluate any other potentially dilutive securities at the end of the period and adjust the basic earnings per share calculation for the impact of those securities that are dilutive. Our dilutive earnings per share calculation includes the dilutive impact of employee stock options based on the treasury stock method and our incentive share awards with performance or market conditions under the contingently issuable method. The diluted earnings per share calculation also considers operating partnership units (if any) under the if-converted method. We have a loss from continuing operations for the 2014 Period, and therefore diluted earnings per share is calculated in the same manner as basic earnings per share for this period.
	The computations of basic and diluted earnings per share for the three and six months ended June 30, 2014 and 2013 were as follows (in thousands, except per share data):
		Three Months Ended June 30,						Six Months Ended June 30,
		2014			2013			2014			2013
	Numerator:
	Income (loss) from continuing operations	$	1,368		$	1,538		$	(897	)	$	2,395
	Net loss attributable to noncontrolling interests	7			—			7			—
	Allocation of earnings to unvested restricted share awards	(17		)	(142		)	38			(262		)
	Adjusted income (loss) from continuing operations attributable to the controlling interests	1,358			1,396			(852		)	2,133
	(Loss) income from discontinued operations, including gain on sale of real estate, net of taxes	(288		)	3,725			106,531			10,203
	Allocation of earnings to unvested restricted share awards	—			—			(332		)	—
	Adjusted (loss) income from discontinuing operations attributable to the controlling interests	(288		)	3,725			106,199			10,203
	Adjusted net income attributable to the controlling interests	$	1,070		$	5,121		$	105,347		$	12,336
	Denominator:
	Weighted average shares outstanding – basic	66,732			66,405			66,718			66,399
	Effect of dilutive securities:
	Operating partnership units	—			117			—			117
	Employee stock options and restricted share awards	29			34			—			21
	Weighted average shares outstanding – diluted	66,761			66,556			66,718			66,537
	Earnings (loss) per common share, basic:
	Continuing operations	$	0.02		$	0.02		$	(0.01	)	$	0.04
	Discontinued operations	—			0.06			1.59			0.15
		$	0.02		$	0.08		$	1.58		$	0.19
	Earnings (loss) per common share, diluted:
	Continuing operations	$	0.02		$	0.02		$	(0.01	)	$	0.04
	Discontinued operations	—			0.06			1.59			0.15
		$	0.02		$	0.08		$	1.58		$	0.19

Segment_Information

Segment Information	6 Months Ended
	Jun. 30, 2013
Segment Reporting Information, Revenue for Reportable Segment [Abstract]	'
Segment Information	'
	NOTE 10: SEGMENT INFORMATION
	We have three reportable segments: office, retail and multifamily. Office buildings provide office space for various types of businesses and professions. Retail shopping centers are typically grocery store anchored neighborhood centers that include other small shop tenants or regional power centers with several junior box tenants. Multifamily properties provide rental housing for individuals and families throughout the Washington metropolitan area. During the 2014 Period, we completed the sale of our medical office segment (see note 3).
	We evaluate performance based upon operating income from the combined properties in each segment. Our reportable operating segments are consolidations of similar properties. GAAP requires that segment disclosures present the measure(s) used by the chief operating decision maker for purposes of assessing segments’ performance. Net operating income is a key measurement of our segment profit and loss. Net operating income is defined as segment real estate rental revenue less segment real estate expenses.
	The following tables present revenues, net operating income, capital expenditures and total assets for the 2014 and 2013 Quarters and Periods from these segments, and reconciles net operating income of reportable segments to net income attributable to the controlling interests as reported (in thousands):
		Three Months Ended June 30, 2014
		Office		Retail		Multifamily		Corporate and Other		Consolidated
	Real estate rental revenue	$	41,876	$	14,759	$	15,619	$	—	$	72,254
	Real estate expenses	15,817		3,237		6,474		—		25,528
	Net operating income	$	26,059	$	11,522	$	9,145	$	—	$	46,726
	Depreciation and amortization									(24,401		)
	General and administrative									(4,828		)
	Acquisition costs									(1,933		)
	Interest expense									(14,985		)
	Other income									219
	Gain on sale of real estate (classified as continuing operations)									570
	Discontinued operations:
	Loss on sale of real estate									(288		)
	Net income									1,080
	Less: Net loss attributable to noncontrolling interests in subsidiaries									7
	Net income attributable to the controlling interests									$	1,087
	Capital expenditures	$	14,467	$	1,010	$	3,101	$	24	$	18,602
	Total assets	$	1,273,404	$	337,513	$	397,454	$	51,778	$	2,060,149
		Three Months Ended June 30, 2013
		Office		Medical		Retail		Multifamily		Corporate			Consolidated
				Office						and Other
	Real estate rental revenue	$	38,235	$	—	$	14,281	$	13,399	$	—		$	65,915
	Real estate expenses	14,581		—		3,583		5,506		—			23,670
	Net operating income	$	23,654	$	—	$	10,698	$	7,893	$	—		$	42,245
	Depreciation and amortization												(21,037		)
	Acquisition costs												(87		)
	General and administrative												(4,005		)
	Interest expense												(15,824		)
	Other income												246
	Discontinued operations:
	Income from operations of properties sold or held for sale												3,725
	Net income												5,263
	Less: Net income attributable to noncontrolling interests in subsidiaries												—
	Net income attributable to the controlling interests												$	5,263
	Capital expenditures	$	9,663	$	1,453	$	1,768	$	1,983	$	102		$	14,969
	Total assets	$	1,116,570	$	321,532	$	349,937	$	251,604	$	41,099		$	2,080,742
		Six Months Ended June 30, 2014
		Office		Retail		Multifamily		Corporate and Other		Consolidated
	Real estate rental revenue	$	80,940	$	29,384	$	30,541	—		$	140,865
	Real estate expenses	31,513		7,468		12,889		—		51,870
	Net operating income	$	49,427	$	21,916	$	17,652	—		$	88,995
	Depreciation and amortization									(47,154		)
	General and administrative									(9,257		)
	Acquisition costs									(4,978		)
	Interest expense									(29,515		)
	Other income									442
	Gain on sale of real estate (classified as continuing operations)									570
	Discontinued operations:
	Income from operations of properties sold or held for sale									546
	Gain on sale of real estate									105,985
	Net income									105,634
	Less: Net loss attributable to noncontrolling interests in subsidiaries									7
	Net income attributable to the controlling interests									105,641
	Capital expenditures	$	23,170	$	1,120	$	4,657	$	41	$	28,988
		Six Months Ended June 30, 2013
		Office		Medical		Retail		Multifamily		Corporate			Consolidated
				Office						and Other
	Real estate rental revenue	$	75,628	$	—	$	28,115	$	26,732	$	—		$	130,475
	Real estate expenses	28,180		—		7,148		10,896		—			46,224
Net operating income	$	47,448	$	—	$	20,967	$	15,836	$	—		$	84,251
Depreciation and amortization												(42,160		)
Acquisition costs												(300		)
General and administrative												(7,867		)
Interest expense												(32,014		)
Other income												485
Discontinued operations:
Income from operations of properties sold or held for sale												7,008
Gain on sale of real estate												3,195
Net income												12,598
Less: Net income attributable to noncontrolling interests in subsidiaries												—
Net income attributable to the controlling interests												$	12,598
Capital expenditures	$	17,238	$	2,530	$	2,534	$	2,767	$	109		$	25,178

Summary_of_Significant_Account1

Summary of Significant Accounting Policies and Basis of Presentation (Policy)	6 Months Ended
	Jun. 30, 2014
Accounting Policies [Abstract]	'
Significant Accounting Policies	'
	Significant Accounting Policies
	We have prepared our consolidated financial statements using the accounting policies described in our Annual Report on Form 10-K for the year ended December 31, 2013.
New Accounting Pronouncements, Policy [Policy Text Block]	'
	New Accounting Pronouncements
	In April 2014, the Financial Accounting Standards Board ("FASB") issued ASU No. 2014-08, Reporting Discontinued Operations and Disclosures of Disposals of Components of an Entity, which changes the requirements for reporting discontinued operations. Specifically, under this ASU only those disposals of components of an entity that represent a strategic shift that has (or will have) a major effect on an entity’s operations and financial results will be reported as discontinued operations in the financial statements. The primary impact of this ASU is that we are no longer required to report the disposal of every operating property in discontinued operations. Adoption of this ASU is required for all disposals (or classifications as held for sale) of components of an entity that occur within annual periods beginning on or after after December 15, 2014, and interim periods within those years. Early adoption is permitted, but only for disposals (or classifications as held for sale) that have not been reported in financial statements previously issued or available for issuance. We early adopted this ASU effective for the first quarter of 2014.
	In June 2014, the FASB issued ASU No. 2014-09, Revenue from Contracts with Customers, which creates a single source of revenue guidance. The new standard provides accounting guidance for all revenue arising from contracts with customers and affects all entities that enter into contracts to provide goods or services to their customers (unless the contracts are in the scope of other U.S. generally accepted accounting principles (“GAAP”) requirements, such as the leasing literature). The guidance also provides a model for the measurement and recognition of gains and losses on the sale of certain nonfinancial assets, such as property and equipment, including real estate. The new standard is effective for public entities for fiscal years beginning after December 15, 2016 and for interim periods therein. Early adoption is not permitted for public entities. We are currently evaluating the impact the new standard may have on Washington REIT.
Principles of Consolidation and Basis of Presentation	'
	Principles of Consolidation and Basis of Presentation
	The accompanying unaudited consolidated financial statements include the consolidated accounts of Washington REIT, our majority-owned subsidiaries and entities in which Washington REIT has a controlling interest, including where Washington REIT has been determined to be a primary beneficiary of a variable interest entity (“VIE”). See note 3 for additional information on the properties for which there is a noncontrolling interest. All intercompany balances and transactions have been eliminated in consolidation.
	We have prepared the accompanying unaudited financial statements pursuant to the rules and regulations of the Securities and Exchange Commission. Certain information and note disclosures normally included in annual financial statements prepared in accordance with GAAP have been condensed or omitted pursuant to those rules and regulations, although we believe that the disclosures made are adequate to make the information presented not misleading. In addition, in the opinion of management, all adjustments (consisting of normal recurring accruals) considered necessary for a fair presentation of the results for the periods presented have been included. These unaudited financial statements should be read in conjunction with the financial statements and notes included in our Annual Report on Form 10-K for the year ended December 31, 2013.
	Within these notes to the financial statements, we refer to the three months ended June 30, 2014 and June 30, 2013 as the “2014 Quarter” and the “2013 Quarter,” respectively, and the six months ended June 30, 2014 and June 30, 2013 as the “2014 Period” and the “2013 Period,” respectively.
Use of Estimates in the Financial Statements	'
	Use of Estimates in the Financial Statements
	The preparation of financial statements in conformity with GAAP requires management to make certain estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates.
Reclassifications	'
	Reclassifications
	Certain prior period amounts have been reclassified to conform to the current period presentation due to the reclassification of certain properties as discontinued operations (see note 3).

Real_Estate_Tables

Real Estate (Tables)	6 Months Ended
	Jun. 30, 2014
Real Estate [Abstract]	'
Schedule Of Real Estate Property Acquired [Table Text Block]	'
	Washington REIT acquired the following properties during the 2014 Period:
							Rentable			Contract
										Purchase Price
	Acquisition Date		Property Name		Type		Square Feet			(in thousands)
	February 21, 2014		Yale West (216 units)		Multifamily		N/A			$	73,000
	March 26, 2014		The Army Navy Club Building		Office		108,000			79,000
	May 1, 2014		1775 Eye Street, NW		Office		185,000			104,500
							293,000			$	256,500
Revenue and Earnings From Acquisition [Table Text Block]	'
	The revenue and earnings of our 2014 acquisitions are as follows (amounts in thousands):
		Three Months Ended June 30, 2014				Six Months Ended June 30, 2014
	Real estate rental revenue	$	4,598			$	5,355
	Net loss	(1,297		)		(2,112		)
Total Purchase Price Of Acquisitions [Table Text Block]	'
	We have recorded the total purchase price of the above acquisitions as follows (in thousands):
	Land	$	93,567
	Buildings	141,456
	Tenant origination costs	8,354
	Leasing commissions/absorption costs	12,847
	Net lease intangible assets	7,331
	Net lease intangible liabilities	(2,122		)
	Fair value of assumed mortgages	(107,125		)
	Furniture fixtures and equipment	932
	Total	$	155,240
Business Acquisition, Pro Forma Information [Table Text Block]	'
	The following unaudited pro-forma combined condensed statements of operations are for the 2014 and 2013 Quarters and Periods as if the above described acquisitions had occurred at the beginning of the period of acquisition and the same period in the year prior to acquisition. The unaudited pro-forma information does not purport to be indicative of the results that actually would have occurred if the acquisitions had been in effect for the 2014 and 2013 Quarters and Periods. The unaudited data presented is in thousands, except per share data.
		Three Months Ended June 30,								Six Months Ended June 30,
		2014				2013				2014				2013
	Real estate rental revenue	$	72,863			$	71,122			$	145,867			$	140,833
	Income (loss) from continuing operations	1,335				(108		)		(1,967		)		(879		)
	Net income	1,047				3,617				104,564				9,324
	Diluted earnings per share	0.02				0.05				1.57				0.14
Land and Capitalized Development Costs	'
	As of June 30, 2014 and December 31, 2013, the land and capitalized development costs are as follows (in thousands):
		June 30, 2014				December 31, 2013
	The Maxwell (formerly 650 North Glebe Road)	$	38,423			$	27,343
	1225 First Street	20,797				20,788
Schedule of Accounts Payable and Accrued Liabilities of Joint Ventures	'
	As of June 30, 2014 and December 31, 2013, the accounts payable and accrued liabilities related to the joint ventures are as follows (in thousands):
		June 30, 2014				December 31, 2013
	The Maxwell	$	5,195			$	1,785
	1225 First Street	18				39
Schedule of Income Statement Results for Medical Office Segment	'
	The results of our medical office segment are summarized as follows (amounts in thousands, except per share data):
		Three Months Ended June 30,								Six Months Ended June 30,
		2014				2013				2014				2013
	Real estate rental revenue	$	—			$	11,010			$	892			$	22,039
	Net income	—				3,439				546				6,260
	Basic net income per share	—				0.05				0.01				0.09
	Diluted net income per share	—				0.05				0.01				0.09
Schedule of Dispositions	'
	We sold the following properties in 2014 and 2013:
	Property Name		Segment		Rentable Square Feet			Contract				Gain on Sale
								Purchase  Price				(in thousands)
								(in thousands)
	Medical Office Portfolio Transactions III & IV (1)		Medical Office		427,000			$	193,561			$	105,985
	5740 Columbia Road (2)		Retail		3,000			1,600				570
			Total 2014		430,000			$	195,161			$	106,555
	Atrium Building		Office		79,000			$	15,750			$	3,195
	Medical Office Portfolio Transactions I & II (3)		Medical Office / Office		1,093,000			307,189				18,949
			Total 2013		1,172,000			$	322,939			$	22,144
Schedule of Investment in Real Estate for Properties Sold or Held For Sale and Related Liabilities	'
	s of June 30, 2014 and December 31, 2013, investment in real estate for properties sold or held for sale, all of which were in the medical office segment, was as follows (in thousands):
		30-Jun-14				December 31, 2013
	Investment in real estate sold or held for sale	$	—			$	125,967
	Less accumulated depreciation	—				(46,066		)
	Investment in real estate sold or held for sale, net	$	—			$	79,901
Operating Income (Loss) for Discontinued Operations	'
	Income from operations of properties sold or held for sale for the three and six months ended June 30, 2014 and 2013 was as follows (in thousands):
		Three Months Ended June 30,								Six Months Ended June 30,
		2014				2013				2014				2013
	Real estate rental revenue	$	—			$	12,357			$	892			$	25,068
	Real estate expenses	—				(3,759		)		(346		)		(8,457		)
	Depreciation and amortization	—				(4,545		)		—				(8,947		)
	Interest expense	—				(328		)		—				(656		)
	Income from operations of properties sold or held for sale	$	—			$	3,725			$	546			$	7,008
Operating Income (Loss) By Property Classified As Discontinued Operations	'
	Income from operations of properties sold or held for sale by property for the three and six months ended June 30, 2014 and 2013 was as follows (in thousands):
					Three Months Ended June 30,								Six Months Ended June 30,
	Property		Segment		2014				2013				2014				2013
	Atrium Building		Office		$	—			$	—			$	—			$	185
	Medical Office Portfolio		Medical Office / Office		—				3,725				546				6,823
					$	—			$	3,725			$	546			$	7,008

Unsecured_Lines_of_Credit_Paya1

Unsecured Lines of Credit Payable (Tables)	6 Months Ended
	Jun. 30, 2014
Unsecured Debt [Abstract]	'
Lines of Credit Unused and Available	'
	The amounts of these lines of credit unused and available at June 30, 2014 are as follows (in thousands):
		Credit Facility		Credit Facility
		No. 1		No. 2
	Committed capacity	$	100,000	$	400,000
	Borrowings outstanding	—		—
	Unused and available	$	100,000	$	400,000

Fair_Value_Disclosures_Tables

Fair Value Disclosures (Tables)	6 Months Ended
	Jun. 30, 2014
Fair Value Disclosures [Abstract]	'
Financial Assets and Liabilities Measured at Fair Value	'
	The fair values of these assets at June 30, 2014 and December 31, 2013 were as follows (in thousands):
		June 30, 2014								December 31, 2013
		Fair		Level 1		Level 2		Level 3		Fair		Level 1		Level 2		Level 3
		Value								Value
	Assets:
	SERP	$	3,606	$	—	$	3,606	$	—	$	3,290	$	—	$	3,290	$	—
Financial Assets and Liabilities Not Measured at Fair Value	'
	As of June 30, 2014 and December 31, 2013, the carrying values and estimated fair values of our financial instruments were as follows (in thousands):
		June 30, 2014				December 31, 2013
		Carrying Value		Fair Value		Carrying Value		Fair Value
	Cash and cash equivalents	$	23,009	$	23,009	$	130,343	$	130,343
	Restricted cash	11,369		11,369		9,189		9,189
	2445 M Street note	5,517		6,982		6,070		6,803
	Mortgage notes payable	406,975		424,617		294,671		313,476
	Notes payable	746,956		790,961		846,703		856,171

Earnings_per_Common_Share_Tabl

Earnings per Common Share (Tables)	6 Months Ended
	Jun. 30, 2014
Earnings Per Share [Abstract]	'
Computation of Basic and Diluted Earnings per Share	'
	The computations of basic and diluted earnings per share for the three and six months ended June 30, 2014 and 2013 were as follows (in thousands, except per share data):
		Three Months Ended June 30,						Six Months Ended June 30,
		2014			2013			2014			2013
	Numerator:
	Income (loss) from continuing operations	$	1,368		$	1,538		$	(897	)	$	2,395
	Net loss attributable to noncontrolling interests	7			—			7			—
	Allocation of earnings to unvested restricted share awards	(17		)	(142		)	38			(262		)
	Adjusted income (loss) from continuing operations attributable to the controlling interests	1,358			1,396			(852		)	2,133
	(Loss) income from discontinued operations, including gain on sale of real estate, net of taxes	(288		)	3,725			106,531			10,203
	Allocation of earnings to unvested restricted share awards	—			—			(332		)	—
	Adjusted (loss) income from discontinuing operations attributable to the controlling interests	(288		)	3,725			106,199			10,203
	Adjusted net income attributable to the controlling interests	$	1,070		$	5,121		$	105,347		$	12,336
	Denominator:
	Weighted average shares outstanding – basic	66,732			66,405			66,718			66,399
	Effect of dilutive securities:
	Operating partnership units	—			117			—			117
	Employee stock options and restricted share awards	29			34			—			21
	Weighted average shares outstanding – diluted	66,761			66,556			66,718			66,537
	Earnings (loss) per common share, basic:
	Continuing operations	$	0.02		$	0.02		$	(0.01	)	$	0.04
	Discontinued operations	—			0.06			1.59			0.15
		$	0.02		$	0.08		$	1.58		$	0.19
	Earnings (loss) per common share, diluted:
	Continuing operations	$	0.02		$	0.02		$	(0.01	)	$	0.04
	Discontinued operations	—			0.06			1.59			0.15
		$	0.02		$	0.08		$	1.58		$	0.19

Segment_Information_Tables

Segment Information (Tables)	6 Months Ended
	Jun. 30, 2014
Segment Reporting Information, Revenue for Reportable Segment [Abstract]	'
Reconciliation of Net Operating Income of Reportable Segments	'
	The following tables present revenues, net operating income, capital expenditures and total assets for the 2014 and 2013 Quarters and Periods from these segments, and reconciles net operating income of reportable segments to net income attributable to the controlling interests as reported (in thousands):
		Three Months Ended June 30, 2014
		Office		Retail		Multifamily		Corporate and Other		Consolidated
	Real estate rental revenue	$	41,876	$	14,759	$	15,619	$	—	$	72,254
	Real estate expenses	15,817		3,237		6,474		—		25,528
	Net operating income	$	26,059	$	11,522	$	9,145	$	—	$	46,726
	Depreciation and amortization									(24,401		)
	General and administrative									(4,828		)
	Acquisition costs									(1,933		)
	Interest expense									(14,985		)
	Other income									219
	Gain on sale of real estate (classified as continuing operations)									570
	Discontinued operations:
	Loss on sale of real estate									(288		)
	Net income									1,080
	Less: Net loss attributable to noncontrolling interests in subsidiaries									7
	Net income attributable to the controlling interests									$	1,087
	Capital expenditures	$	14,467	$	1,010	$	3,101	$	24	$	18,602
	Total assets	$	1,273,404	$	337,513	$	397,454	$	51,778	$	2,060,149
		Three Months Ended June 30, 2013
		Office		Medical		Retail		Multifamily		Corporate			Consolidated
				Office						and Other
	Real estate rental revenue	$	38,235	$	—	$	14,281	$	13,399	$	—		$	65,915
	Real estate expenses	14,581		—		3,583		5,506		—			23,670
	Net operating income	$	23,654	$	—	$	10,698	$	7,893	$	—		$	42,245
	Depreciation and amortization												(21,037		)
	Acquisition costs												(87		)
	General and administrative												(4,005		)
	Interest expense												(15,824		)
	Other income												246
	Discontinued operations:
	Income from operations of properties sold or held for sale												3,725
	Net income												5,263
	Less: Net income attributable to noncontrolling interests in subsidiaries												—
	Net income attributable to the controlling interests												$	5,263
	Capital expenditures	$	9,663	$	1,453	$	1,768	$	1,983	$	102		$	14,969
	Total assets	$	1,116,570	$	321,532	$	349,937	$	251,604	$	41,099		$	2,080,742
		Six Months Ended June 30, 2014
		Office		Retail		Multifamily		Corporate and Other		Consolidated
	Real estate rental revenue	$	80,940	$	29,384	$	30,541	—		$	140,865
	Real estate expenses	31,513		7,468		12,889		—		51,870
	Net operating income	$	49,427	$	21,916	$	17,652	—		$	88,995
	Depreciation and amortization									(47,154		)
	General and administrative									(9,257		)
	Acquisition costs									(4,978		)
	Interest expense									(29,515		)
	Other income									442
	Gain on sale of real estate (classified as continuing operations)									570
	Discontinued operations:
	Income from operations of properties sold or held for sale									546
	Gain on sale of real estate									105,985
	Net income									105,634
	Less: Net loss attributable to noncontrolling interests in subsidiaries									7
	Net income attributable to the controlling interests									105,641
	Capital expenditures	$	23,170	$	1,120	$	4,657	$	41	$	28,988
		Six Months Ended June 30, 2013
		Office		Medical		Retail		Multifamily		Corporate			Consolidated
				Office						and Other
	Real estate rental revenue	$	75,628	$	—	$	28,115	$	26,732	$	—		$	130,475
	Real estate expenses	28,180		—		7,148		10,896		—			46,224
	Net operating income	$	47,448	$	—	$	20,967	$	15,836	$	—		$	84,251
	Depreciation and amortization												(42,160		)
	Acquisition costs												(300		)
General and administrative												(7,867		)
Interest expense												(32,014		)
Other income												485
Discontinued operations:
Income from operations of properties sold or held for sale												7,008
Gain on sale of real estate												3,195
Net income												12,598
Less: Net income attributable to noncontrolling interests in subsidiaries												—
Net income attributable to the controlling interests												$	12,598
Capital expenditures	$	17,238	$	2,530	$	2,534	$	2,767	$	109		$	25,178

Nature_of_Business_Details

Nature of Business (Details) (USD $)	6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014		Dec. 31, 2013
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]	'		'
Percentage of distribution of ordinary taxable income	90.00%		'
Disposal Group, Including Discontinued Operation, Sale Price	$195,161		$322,939
Medical Office And Office Building [Member] | Medical Office Portfolio Transactions III & IV [Member]	'		'
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]	'		'
Disposal Group, Including Discontinued Operation, Sale Price	$193,600	[1]	'
[1]	Woodburn Medical Park I and II and Prosperity Medical Center I, II and III.

Real_Estate_Acquisitions_Detai

Real Estate - Acquisitions (Details) (USD $)

3 Months Ended

6 Months Ended

6 Months Ended

3 Months Ended

6 Months Ended

3 Months Ended

6 Months Ended

12 Months Ended

6 Months Ended

Jun. 30, 2014

Jun. 30, 2013

Jun. 30, 2014

Jun. 30, 2013

Dec. 31, 2013

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2013

Jun. 30, 2014

Jun. 30, 2013

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Dec. 31, 2013

Jun. 30, 2014

Jun. 30, 2014

note

Tenant Origination Costs Member

Leasing Commissions Absorption Costs Member

Net Lease Intangible Assets Member

Net Lease Intangible Liabilities Member

Pro Forma [Member]

Pro Forma [Member]

Pro Forma [Member]

Pro Forma [Member]

Property Acquired [Member]

Property Acquired [Member]

Property Acquired [Member]

Property Acquired [Member]

Property Acquired [Member]

Property Acquired [Member]

sqft

Yale West

Yale West

The Army Navy Club Building

1775 Eye Street [Member]

sqft

sqft

Real Estate Properties [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

SEC Schedule III, Real Estate and Accumulated Depreciation, Date Acquired

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

21-Feb-14

'

26-Mar-14

1-May-14

Real Estate, Type of Property, Multifamily

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'Multifamily

'

'

'

Real Estate, Type of Property, Office

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'Office

'Office

Square Footage Of Real Estate Property Acquired

'

'

'

'

'

'

'

'

'

'

'

'

'

'

293,000

'

'

108,000

185,000

Real Estate Investment Property, at Cost

$2,373,841,000

'

$2,373,841,000

'

$2,102,227,000

'

'

'

'

'

'

'

'

$256,500,000

$256,500,000

$73,000,000

'

$79,000,000

$104,500,000

Real estate rental revenue

72,254,000

65,915,000

140,865,000

130,475,000

'

'

'

'

'

72,863,000

71,122,000

145,867,000

140,833,000

4,598,000

5,355,000

'

'

'

'

Net Investment Income

'

'

'

'

'

'

'

'

'

'

'

'

'

-1,297,000

-2,112,000

'

'

'

'

Payments to Acquire Land Held-for-use

'

'

93,567,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Payments to Acquire Buildings

'

'

141,456,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Tenant origination costs

8,354,000

'

8,354,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Leasing commissions absorption costs

12,847,000

'

12,847,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Net lease intangible assets

7,331,000

'

7,331,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Net lease intangible liabilities

-2,122,000

'

-2,122,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Long-term Debt

-107,125,000

'

-107,125,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment

932,000

'

932,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Total property purchase price

'

'

155,240,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Weighted Average Useful Life

'

'

'

'

'

'74 months

'57 months

'75 months

'85 months

'

'

'

'

'

'

'

'

'

'

Payments to Acquire Real Estate

'

'

154,126,000

0

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Number of Mortgage Notes Assumed

'

'

2

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Notes Assumed

'

'

100,900,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Payments for Escrow Deposit

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

3,600,000

'

1,900,000

Income (Loss) from Continuing Operations, Including Portion Attributable to Noncontrolling Interest

1,368,000

1,538,000

-897,000

2,395,000

'

'

'

'

'

1,335,000

-108,000

-1,967,000

-879,000

'

'

'

'

'

'

Net income attributable to the controlling interests

$1,087,000

$5,263,000

$105,641,000

$12,598,000

'

'

'

'

'

$1,047,000

$3,617,000

$104,564,000

$9,324,000

'

'

'

'

'

'

Diluted Earnings Per Share Pro Forma

'

'

'

'

'

'

'

'

'

$0.02

$0.05

$1.57

$0.14

'

'

'

'

'

'

Real_Estate_Redevelopment_Deta

Real Estate - Redevelopment (Details) (7900 Westpark Drive [Member], USD $)	6 Months Ended
In Millions, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
7900 Westpark Drive [Member]	'	'
Real Estate Properties [Line Items]	'	'
Estimated development costs	$35	'
Land Available for Development	$15.20	$3.60

Real_Estate_Variable_Interest_

Real Estate - Variable Interest Entities (Details) (USD $)

6 Months Ended

1 Months Ended

3 Months Ended

6 Months Ended

1 Months Ended

6 Months Ended

6 Months Ended

0 Months Ended

Jun. 30, 2014

Dec. 31, 2013

Jun. 30, 2011

Jun. 30, 2013

Jun. 30, 2014

Dec. 31, 2013

Nov. 30, 2011

Jun. 30, 2014

Dec. 31, 2013

Jun. 30, 2014

Dec. 31, 2013

Feb. 21, 2013

Feb. 21, 2013

Feb. 21, 2013

650 North Glebe Road [Member]

650 North Glebe Road [Member]

650 North Glebe Road [Member]

650 North Glebe Road [Member]

1225 First Street [Member]

1225 First Street [Member]

1225 First Street [Member]

650 N Glebe [Member] [Domain]

650 N Glebe [Member] [Domain]

650 N Glebe [Member] [Domain]

London Interbank Offered Rate (LIBOR) [Member]

London Interbank Offered Rate (LIBOR) [Member]

extension_option

Secured Debt [Member]

Secured Debt [Member]

Maximum [Member]

Minimum [Member]

650 N Glebe [Member] [Domain]

650 N Glebe [Member] [Domain]

Real Estate Properties [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Long-term Construction Loan

'

'

'

'

'

'

'

'

'

'

'

$33,000,000

'

'

Estimated development costs

'

'

49,900,000

'

'

'

95,300,000

'

'

'

'

'

'

'

Percentage of capital contribution through debt

70.00%

'

'

70.00%

'

'

'

70.00%

'

'

'

'

'

'

Variable interest entity, qualitative or quantitative information, ownership percentage

'

'

'

'

90.00%

'

'

95.00%

'

'

'

'

'

'

Percentage of residential property to be leased to achieve project stabilization stage

'

'

'

'

90.00%

'

'

'

'

'

'

'

'

'

Noncontrolling interest, ownership percentage by noncontrolling owners

'

'

'

'

10.00%

'

'

5.00%

'

'

'

'

'

'

Land and capitalized development costs related to joint ventures

'

'

'

'

38,423,000

27,343,000

'

20,797,000

20,788,000

'

'

'

'

'

Accounts payable and accrued liabilities related to joint ventures

'

'

'

'

5,195,000

1,785,000

'

18,000

39,000

'

'

'

'

'

Mortgage notes payable

$406,975,000

$294,671,000

'

'

'

'

'

'

'

$14,000,000

$7,300,000

'

'

'

Debt Instrument, Basis Spread on Variable Rate

'

'

'

'

'

'

'

'

'

'

'

'

2.15%

2.00%

Number of Extension Options

'

'

'

'

'

'

'

'

'

2

'

'

'

'

Debt Agreement Optional Extension Period Exercisable by Option

'

'

'

'

'

'

'

'

'

'1 year

'

'

'

'

Real_Estate_Discontinued_Opera

Real Estate - Discontinued Operations (Details) (USD $)

3 Months Ended

6 Months Ended

12 Months Ended

1 Months Ended

3 Months Ended

6 Months Ended

12 Months Ended

1 Months Ended

3 Months Ended

6 Months Ended

12 Months Ended

In Thousands, unless otherwise specified

Jun. 30, 2014

Jun. 30, 2013

Jun. 30, 2014

Jun. 30, 2013

Dec. 31, 2013

Sep. 30, 2013

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2013

Jun. 30, 2014

Jun. 30, 2013

Dec. 31, 2013

Sep. 30, 2013

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2013

Jun. 30, 2014

Jun. 30, 2013

Dec. 31, 2013

sqft

sqft

sqft

Medical Office Porfolio [Member]

Medical Office Building [Member]

Retail [Member]

Office [Member]

Office [Member]

Office [Member]

Office [Member]

Office [Member]

Office [Member]

Medical Office And Office Building [Member]

Medical Office And Office Building [Member]

Medical Office And Office Building [Member]

Medical Office And Office Building [Member]

Medical Office And Office Building [Member]

Medical Office And Office Building [Member]

agreements

Medical Office Portfolio Transactions III & IV [Member]

Gateway 7-11 [Member]

Atrium Building [Member]

Atrium Building [Member]

Atrium Building [Member]

Atrium Building [Member]

Atrium Building [Member]

Medical Office Porfolio [Member]

Medical Office Portfolio Transactions III & IV [Member]

Medical Office Porfolio [Member]

Medical Office Porfolio [Member]

Medical Office Porfolio [Member]

Medical Office Porfolio [Member]

Medical Office Portfolio Transactions I & II [Member]

sqft

sqft

sqft

buildings

sqft

Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Number of Purchase and Sale Agreements

'

'

'

'

'

4

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Number of Buildings Sold

'

'

'

'

'

'

'

'

'

'

'

'

'

2

'

'

'

'

'

'

Rentable square feet

430,000

'

430,000

'

1,172,000

'

427,000

[1]

3,000

[2]

'

'

'

'

79,000

'

'

'

'

'

'

1,093,000

[3]

Disposal Group, Not Discontinued Operation, Sale Price

'

'

'

'

'

'

'

$1,600

[2]

'

'

'

'

'

'

'

'

'

'

'

'

Contract sale price

195,161

'

195,161

'

322,939

'

193,561

[1]

'

'

'

'

'

15,750

'

193,600

[1]

500,800

'

500,800

'

307,189

[3]

Disposal Group, including discontinued operation, gain (loss) on sale of real estate

'

'

106,555

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Gains (Losses) on Sales of Investment Real Estate

'

'

'

'

'

'

'

570

[2]

'

'

'

'

'

'

'

'

'

'

'

'

(Loss) gain on sale of real estate

-288

0

105,985

3,195

22,144

'

'

'

'

'

'

'

3,195

'

'

'

'

'

'

18,949

[3]

Disposal Group, Including Discontinued Operation, Income Statement Disclosures [Abstract]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Real estate rental revenue

0

12,357

892

25,068

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Real estate expenses

0

-3,759

-346

-8,457

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Depreciation and amortization

0

-4,545

0

-8,947

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Interest expense

0

-328

0

-656

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Income from operations of properties sold or held for sale

$0

$3,725

$546

$7,008

'

'

'

'

$0

$0

$0

$185

'

'

'

$0

$3,725

$546

$6,823

'

[1]

Woodburn Medical Park I and II and Prosperity Medical Center I, II and III.

[2]

This property is classified as continuing operations in accordance with ASU No. 2014-08 (see note 2).

[3]

2440 M Street, 15001 Shady Grove Road, 15505 Shady Grove Road, 19500 at Riverside Park (formerly Lansdowne Medical Office Building), 9707 Medical Center Drive, CentreMed I and II, 8301 Arlington Boulevard, Sterling Medical Office Building, Shady Grove Medical Village II, Alexandria Professional Center, Ashburn Farm Office Park I, Ashburn Farm Office Park II, Ashburn Farm Office Park III, Woodholme Medical Office Building, two office properties (6565 Arlington Boulevard and Woodholme Center) and undeveloped land at 4661 Kenmore Avenue

Real_Estate_Income_statement_r

Real Estate - Income statement results of assets held for sale (Details) (USD $)	3 Months Ended		6 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Impact of potential sale on operating results	'	'	'	'
Real estate revenues	$72,254	$65,915	$140,865	$130,475
Net income	1,087	5,263	105,641	12,598
Basic net income per share (in dollars per share)	$0.02	$0.08	$1.58	$0.19
Diluted net income per share (in dollars per share)	$0.02	$0.08	$1.58	$0.19
Medical Office [Member]	'	'	'	'
Impact of potential sale on operating results	'	'	'	'
Real estate revenues	0	11,010	892	22,039
Net income	$0	$3,439	$546	$6,260
Basic net income per share (in dollars per share)	$0	$0.05	$0.01	$0.09
Diluted net income per share (in dollars per share)	$0	$0.05	$0.01	$0.09

Real_Estate_Assets_and_liabili

Real Estate - Assets and liabilities of real estate held for sale (Details) (USD $)	Jun. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Disposal Group, Including Discontinued Operation, Balance Sheet Disclosures [Abstract]	'	'
Investment in real estate sold or held for sale, net	$0	$125,967
Less accumulated depreciation	0	-46,066
Investment in real estate sold or held for sale, net	$0	$79,901

Mortgage_Notes_Payable_Details

Mortgage Notes Payable (Details) (USD $)	6 Months Ended		1 Months Ended		1 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Feb. 28, 2014	Feb. 21, 2014	Mar. 31, 2014	Jun. 30, 2014	Mar. 26, 2014
			Mortgage Note Payable	Mortgage Note Payable	Mortgage Note Payable	Mortgage Note Payable	Mortgage Note Payable
			Yale West	Yale West	The Army Navy Club Building	The Army Navy Club Building	The Army Navy Club Building
Debt Instrument [Line Items]	'	'	'	'	'	'	'
Mortgage notes payable assumed in connection with the acquisition of real estate	$100,861	$0	$48,200	'	$52,700	'	'
Interest rate, stated percentage	'	'	5.55%	'	'	3.45%	'
Debt Instrument, Interest Rate, Basis for Effective Rate	'	'	'	3.75%	'	'	3.18%
Mortgage notes payable, Fair Value	'	'	$54,000	'	'	$53,200	'

Unsecured_Lines_of_Credit_Paya2

Unsecured Lines of Credit Payable (Details) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2014	Jun. 30, 2014	Jun. 30, 2014	Jan. 15, 2014
	Credit Facility No. 1 [Member]	Credit Facility No. 2 [Member]	Maximum [Member]	Maximum [Member]	5.125% unsecured notes [Member]
			Credit Facility No. 1 [Member]	Credit Facility No. 2 [Member]	Unsecured Debt [Member]
Line of Credit Facility [Line Items]	'	'	'	'	'
Expiration date	30-Jun-15	31-Jul-16	'	'	'
Committed capacity	$100,000	$400,000	$200,000	$600,000	'
Borrowings outstanding	0	0	'	'	'
Unused and available	$100,000	$400,000	'	'	'
Interest rate, stated percentage	'	'	'	'	5.25%

Notes_Payable_Details

Notes Payable (Details) (USD $)	6 Months Ended		0 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Mar. 15, 2013	Jan. 15, 2014
			Unsecured Debt [Member]	Unsecured Debt [Member]
			5.125% unsecured notes [Member]	5.125% unsecured notes [Member]
Debt Instrument [Line Items]	'	'	'	'
Repayments of Unsecured Debt	$100,000	$60,000	$100,000	'
Interest rate, stated percentage	'	'	'	5.25%

Stock_Based_Compensation_Detai

Stock Based Compensation (Details) (USD $)	3 Months Ended		6 Months Ended
In Millions, except Share data, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'
Stock-based compensation expense	$1.40	$1.40	$2.50	$2.40
Restricted Share Awards [Member]	'	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'
Fair value of share grants vested	'	'	0.7	0.7
Total unvested restricted share awards (in shares)	222,469	'	222,469	'
Weighted average grant date fair value (in dollars per share)	$25.41	'	$25.41	'
Total compensation costs, non-vested restricted share awards	$2.40	'	$2.40	'
Total compensation cost not yet recognized, period for recognition (in months)	'	'	'18 months	'
Washington Real Estate Investment Trust 2007 Omnibus Long-Term Incentive Plan [Member]	'	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'
Stock based plan, aggregate number of shares authorized (in shares)	2,000,000	'	2,000,000	'
Stock based plan, period in effect (in years)	'	'	'10 years	'

Fair_Value_Disclosures_Financi

Fair Value Disclosures - Financial Assets and Liabilities Measured at Fair Value (Details) (USD $)	Jun. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Assets: SERP	$3,606	$3,290
Level 1 [Member]	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Assets: SERP	0	0
Level 2 [Member]	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Assets: SERP	3,606	3,290
Level 3 [Member]	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Assets: SERP	$0	$0

Fair_Value_Disclosures_Financi1

Fair Value Disclosures - Financial Assets and Liabilities Not Measured at Fair Value (Details) (USD $)	6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2014	Dec. 31, 2013	Jun. 30, 2014	Dec. 31, 2013	Jun. 30, 2014	Dec. 31, 2013	Jun. 30, 2014	Dec. 31, 2013
		Carrying Value	Carrying Value	Carrying Value	Carrying Value	Fair Value	Fair Value	Fair Value	Fair Value
				2445 M Street Note Receivable [Member]	2445 M Street Note Receivable [Member]			2445 M Street Note Receivable [Member]	2445 M Street Note Receivable [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'	'	'	'	'	'	'	'
Commercial paper, maturity	'90	'	'	'	'	'	'	'	'
Cash and cash equivalents, Fair Value	'	$23,009	$130,343	'	'	$23,009	$130,343	'	'
Restricted Cash, Fair Value	'	11,369	9,189	'	'	11,369	9,189	'	'
2445 M Street note receivable, Fair Value	'	'	'	5,517	6,070	'	'	6,982	6,803
Mortgage notes payable, Fair Value	'	406,975	294,671	'	'	424,617	313,476	'	'
Notes payable, Fair Value	'	$746,956	$846,703	'	'	$790,961	$856,171	'	'

Earnings_per_Common_Share_Deta

Earnings per Common Share (Details) (USD $)	3 Months Ended		6 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Earnings Per Share [Abstract]	'	'	'	'
Income (loss) from continuing operations	$1,368	$1,538	($897)	$2,395
Less: Net income attributable to noncontrolling interests in subsidiaries	7	0	7	0
Allocation of earnings to unvested restricted share awards	-17	-142	38	-262
Adjusted income (loss) from continuing operations attributable to the controlling interests	1,358	1,396	-852	2,133
(Loss) income from discontinued operations, including gain on sale of real estate, net of taxes	-288	3,725	106,531	10,203
Allocation of earnings to unvested restricted share awards	0	0	-332	0
Adjusted (loss) income from discontinuing operations attributable to the controlling interests	-288	3,725	106,199	10,203
Adjusted net income attributable to the controlling interests	$1,070	$5,121	$105,347	$12,336
Weighted average shares outstanding - basic (in shares)	66,732	66,405	66,718	66,399
Effect of dilutive securities: Operating partnership units	0	117	0	117
Effect of dilutive securities: Employee stock options and restricted share awards	29	34	0	21
Weighted average shares outstanding - diluted (in shares)	66,761	66,556	66,718	66,537
Earnings per common share, basic, Continuing operations (in dollars per share)	$0.02	$0.02	($0.01)	$0.04
Earnings per common share, basic, Discontinued operations (in dollars per share)	$0	$0.06	$1.59	$0.15
Net income per share (in dollars per share)	$0.02	$0.08	$1.58	$0.19
Earnings per common share, diluted, Continuing operations (in dollars per share)	$0.02	$0.02	($0.01)	$0.04
Earnings per common share, diluted, Discontinued operations (in dollars per share)	$0	$0.06	$1.59	$0.15
Net income per share (in dollars per share)	$0.02	$0.08	$1.58	$0.19

Segment_Information_Details

Segment Information (Details) (USD $)	3 Months Ended		6 Months Ended		12 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Dec. 31, 2013
			segment
Segment Reporting Information [Line Items]	'	'	'	'	'
Number of reportable segments	'	'	3	'	'
Real estate rental revenue	$72,254	$65,915	$140,865	$130,475	'
Real estate expenses	25,528	23,670	51,870	46,224	'
Net operating income	46,726	42,245	88,995	84,251	'
Depreciation and amortization	-24,401	-21,037	-47,154	-42,160	'
General and administrative	-4,828	-4,005	-9,257	-7,867	'
Acquisition costs	-1,933	-87	-4,978	-300	'
Interest expense	-14,985	-15,824	-29,515	-32,014	'
Other income	219	246	442	485	'
Gain on sale of real estate	570	0	570	0	'
Income from operations of properties sold or held for sale	0	3,725	546	7,008	'
(Loss) gain on sale of real estate	-288	0	105,985	3,195	22,144
Net income	1,080	5,263	105,634	12,598	'
Less: Net income attributable to noncontrolling interests in subsidiaries	7	0	7	0	'
Net income attributable to the controlling interests	1,087	5,263	105,641	12,598	'
Capital expenditures	18,602	14,969	28,988	25,178	'
Total assets	2,060,149	2,080,742	2,060,149	2,080,742	1,975,493
Office [Member]	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'
Real estate rental revenue	41,876	38,235	80,940	75,628	'
Real estate expenses	15,817	14,581	31,513	28,180	'
Net operating income	26,059	23,654	49,427	47,448	'
Capital expenditures	14,467	9,663	23,170	17,238	'
Total assets	1,273,404	1,116,570	1,273,404	1,116,570	'
Retail [Member]	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'
Real estate rental revenue	14,759	14,281	29,384	28,115	'
Real estate expenses	3,237	3,583	7,468	7,148	'
Net operating income	11,522	10,698	21,916	20,967	'
Capital expenditures	1,010	1,768	1,120	2,534	'
Total assets	337,513	349,937	337,513	349,937	'
Multifamily [Member]	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'
Real estate rental revenue	15,619	13,399	30,541	26,732	'
Real estate expenses	6,474	5,506	12,889	10,896	'
Net operating income	9,145	7,893	17,652	15,836	'
Capital expenditures	3,101	1,983	4,657	2,767	'
Total assets	397,454	251,604	397,454	251,604	'
Corporate and Other [Member]	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'
Real estate rental revenue	0	0	0	0	'
Real estate expenses	0	0	0	0	'
Net operating income	0	0	0	0	'
Capital expenditures	24	102	41	109	'
Total assets	51,778	41,099	51,778	41,099	'
Medical Office [Member]	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'
Real estate rental revenue	'	0	'	0	'
Real estate expenses	'	0	'	0	'
Net operating income	'	0	'	0	'
Capital expenditures	'	1,453	'	2,530	'
Total assets	'	$321,532	'	$321,532	'