10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, DC 20549

FORM 10-Q

x QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(D) OF THE SECURITIES EXCHANGE ACT OF 1934

For the quarterly period ended March 31, 2014.

¨ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(D) OF THE SECURITIES EXCHANGE ACT OF 1934

For the transition period from                      to                     .

Commission File Number 1-31824

FIRST POTOMAC REALTY TRUST

(Exact name of registrant as specified in its charter)

MARYLAND	37-1470730
(State or other jurisdiction of incorporation or organization)	(I.R.S. Employer Identification No.)

7600 Wisconsin Avenue, 11^th Floor, Bethesda, MD 20814

(Address of principal executive offices) (Zip Code)

(301) 986-9200

(Registrant’s telephone number, including area code)

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.    YES  x    NO  ¨

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files).    YES  x    NO  ¨

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, or a smaller reporting company. See definitions of “large accelerated filer,” “accelerated filter,” and “smaller reporting company” in Rule 12b-2 of the Exchange Act. (Check one):

Large Accelerated Filer	x	Accelerated Filer	¨
Non-Accelerated Filer	¨	Smaller Reporting Company	¨

Indicate by check mark whether the registrant is a shell company (as defined in Exchange Act Rule 12b-2 of the Exchange Act).    YES  ¨    NO  x

As of April 29, 2014, there were 58,758,833 common shares, par value $0.001 per share, outstanding.

FIRST POTOMAC REALTY TRUST

FORM 10-Q

INDEX

		Page
Part I:	Financial Information
Item 1.	Condensed Consolidated Financial Statements
	Consolidated balance sheets as of March 31, 2014 (unaudited) and December 31, 2013		4
	Consolidated statements of operations (unaudited) for the three months ended March 31, 2014 and 2013		5
	Consolidated statements of comprehensive (loss) income (unaudited) for the three months ended March 31, 2014 and 2013		6
	Consolidated statements of cash flows (unaudited) for the three months ended March 31, 2014 and 2013		7
	Notes to condensed consolidated financial statements (unaudited)		9
Item 2.	Management’s Discussion and Analysis of Financial Condition and Results of Operations		27
Item 3.	Quantitative and Qualitative Disclosures about Market Risk		51
Item 4.	Controls and Procedures		52
Part II:	Other Information
Item 1.	Legal Proceedings		52
Item 1A.	Risk Factors		52
Item 2.	Unregistered Sales of Equity Securities and Use of Proceeds		53
Item 3.	Defaults Upon Senior Securities		53
Item 4.	Mine Safety Disclosures		53
Item 5.	Other Information		53
Item 6.	Exhibits		53
	Signatures		55

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SPECIAL NOTE ABOUT FORWARD-LOOKING STATEMENTS

This report contains forward-looking statements within the meaning of the federal securities laws. Forward-looking statements, which are based on certain assumptions and describe future plans, strategies and expectations of the Company, are generally identifiable by use of the words “believe,” “expect,” “intend,” “anticipate,” “estimate,” “project” or similar expressions. The Company’s ability to predict results or the actual effect of future plans or strategies is inherently uncertain. Certain factors that could cause actual results to differ materially from the Company’s expectations include changes in general or regional economic conditions; the Company’s ability to timely lease or re-lease space at current or anticipated rents; changes in interest rates; changes in operating costs; the Company’s ability to complete acquisitions and, if applicable, dispositions on acceptable terms; the Company’s ability to manage its current debt levels and repay or refinance its indebtedness upon maturity or other required payment dates; the Company’s ability to maintain financial covenant compliance under its debt agreements; the Company’s ability to maintain effective internal controls over financial reporting and disclosure controls and procedures; any impact of the informal inquiry initiated by the U.S. Securities and Exchange Commission (the “SEC”); the Company’s ability to obtain debt and/or financing on attractive terms, or at all; and other risks detailed under “Risk Factors” in Part I, Item 1A in our Annual Report on Form 10-K for the year ended December 31, 2013 and in the other documents the Company files with the SEC. Many of these factors are beyond the Company’s ability to control or predict. Forward-looking statements are not guarantees of performance. For forward-looking statements herein, the Company claims the protection of the safe harbor for forward-looking statements contained in the Private Securities Litigation Reform Act of 1995. The Company assumes no obligation to update or supplement forward-looking statements that become untrue because of subsequent events. We have no duty to, and do not intend to, update or revise the forward-looking statements in this discussion after the date hereof, except as may be required by law. In light of these risks and uncertainties, you should keep in mind that any forward-looking statement made in this discussion, or elsewhere, might not occur.

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FIRST POTOMAC REALTY TRUST

Consolidated Balance Sheets

(Amounts in thousands, except per share amounts)

	March 31, 2014			December 31, 2013
	(unaudited)
Assets:
Rental property, net	$	1,201,015		$	1,203,299
Assets held-for-sale		12,564			45,861
Cash and cash equivalents		14,842			8,740
Escrows and reserves		3,669			7,673
Accounts and other receivables, net of allowance for doubtful accounts of $896 and $1,181, respectively		14,853			12,384
Accrued straight-line rents, net of allowance for doubtful accounts of $109 and $92, respectively		32,863			30,332
Notes receivable, net		63,782			54,696
Investment in affiliates		48,818			49,150
Deferred costs, net		42,085			43,198
Prepaid expenses and other assets		10,139			8,279
Intangible assets, net		36,706			38,848
Total assets	$	1,481,336		$	1,502,460
Liabilities:
Mortgage loans	$	275,095		$	274,648
Unsecured term loan		300,000			300,000
Unsecured revolving credit facility		96,000			99,000
Accounts payable and other liabilities		36,003			41,296
Accrued interest		1,646			1,663
Rents received in advance		5,627			6,118
Tenant security deposits		5,917			5,666
Deferred market rent, net		1,432			1,557
Total liabilities		721,720			729,948
Noncontrolling interests in the Operating Partnership		34,707			33,221
Equity:
Preferred Shares, $0.001 par value, 50,000 shares authorized;
Series A Preferred Shares, $25 per share liquidation preference, 6,400 shares issued and outstanding		160,000			160,000
Common shares, $0.001 par value, 150,000 shares authorized; 58,758 and 58,704 shares issued and outstanding, respectively		59			59
Additional paid-in capital		910,047			911,533
Noncontrolling interests in consolidated partnerships		870			781
Accumulated other comprehensive loss		(3,668	)		(3,836	)
Dividends in excess of accumulated earnings		(342,399	)		(329,246	)
Total equity		724,909			739,291
Total liabilities, noncontrolling interests and equity	$	1,481,336		$	1,502,460

See accompanying notes to condensed consolidated financial statements.

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FIRST POTOMAC REALTY TRUST

Consolidated Statements of Operations

(unaudited)

(Amounts in thousands, except per share amounts)

	Three Months Ended March 31,
	2014			2013
Revenues:
Rental	$	31,940		$	30,693
Tenant reimbursements and other		9,474			8,465
Total revenues		41,414			39,158
Operating expenses:
Property operating		12,898			10,311
Real estate taxes and insurance		4,269			4,511
General and administrative		5,196			5,267
Acquisition costs		68			—
Depreciation and amortization		15,104			13,987
Total operating expenses		37,535			34,076
Operating income		3,879			5,082
Other expenses, net:
Interest expense		5,812			9,958
Interest and other income		(1,759	)		(1,530	)
Equity in losses (earnings) of affiliates		227			(28	)
Total other expenses, net		4,280			8,400
Loss from continuing operations		(401	)		(3,318	)
Discontinued operations:
(Loss) income from operations		(1,096	)		5,281
Gain on sale of real estate property		54			—
(Loss) income from discontinued operations		(1,042	)		5,281
Net (loss) income		(1,443	)		1,963
Less: Net loss attributable to noncontrolling interests		195			59
Net (loss) income attributable to First Potomac Realty Trust		(1,248	)		2,022
Less: Dividends on preferred shares		(3,100	)		(3,100	)
Net loss attributable to common shareholders	$	(4,348	)	$	(1,078	)
Basic and diluted earnings per common share:
Loss from continuing operations	$	(0.06	)	$	(0.12	)
(Loss) income from discontinued operations		(0.02	)		0.10
Net loss	$	(0.08	)	$	(0.02	)
Weighted average common shares outstanding:
Basic and diluted		58,097			50,404

See accompanying notes to condensed consolidated financial statements.

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FIRST POTOMAC REALTY TRUST

Consolidated Statements of Comprehensive (Loss) Income

(unaudited)

(Amounts in thousands)

	Three Months Ended March 31,
	2014			2013
Net (loss) income	$	(1,443	)	$	1,963
Unrealized gain on derivative instruments		317			1,093
Unrealized loss on derivative instruments		(142	)		—
Total comprehensive (loss) income		(1,268	)		3,056
Net loss attributable to noncontrolling interests		195			59
Net gain from derivative instruments attributable to noncontrolling interests		(7	)		(52	)
Comprehensive (loss) income attributable to First Potomac Realty Trust	$	(1,080	)	$	3,063

See accompanying notes to condensed consolidated financial statements.

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FIRST POTOMAC REALTY TRUST

Consolidated Statements of Cash Flows

(Unaudited, amounts in thousands)

	Three Months Ended March 31,
	2014			2013
Cash flows from operating activities:
Net (loss) income	$	(1,443	)	$	1,963
Adjustments to reconcile net (loss) income to net cash provided by operating activities:
Discontinued operations:
Gain on sale of real estate property		(54	)		—
Depreciation and amortization		455			2,922
Depreciation and amortization		15,366			14,228
Share based compensation		823			771
Bad debt expense		111			261
Amortization of deferred market rent, net		(56	)		(18	)
Amortization of financing costs and discounts		266			748
Equity in losses (earnings) of affiliates		227			(28	)
Distributions from investments in affiliates		106			850
Changes in assets and liabilities:
Escrows and reserves		4,010			3,205
Accounts and other receivables		(2,623	)		759
Accrued straight-line rents		(1,442	)		(2,832	)
Prepaid expenses and other assets		651			313
Tenant security deposits		58			101
Accounts payable and accrued expenses		(2,189	)		(2,541	)
Accrued interest		(17	)		(123	)
Rents received in advance		(593	)		(3,533	)
Deferred costs		(2,210	)		(2,196	)
Total adjustments		12,889			12,887
Net cash provided by operating activities		11,446			14,850
Cash flows from investing activities:
Investment in note receivable		(9,000	)		—
Proceeds from sale of real estate assets		31,616			—
Principal payments from note receivable		52			—
Change in escrow and reserve accounts		—			(25	)
Purchase deposit on future acquisitions		(2,000	)		—
Additions to rental property and furniture, fixtures and equipment		(8,297	)		(10,504	)
Additions to development and redevelopment		(3,096	)		(5,266	)
Investment in affiliates		—			(297	)
Net cash provided by (used in) investing activities		9,275			(16,092	)
Cash flows from financing activities:
Financing costs		(2	)		(309	)
Issuance of debt		27,794			62,500
Repayments of debt		(30,296	)		(41,470	)
Dividends to common shareholders		(8,789	)		(7,655	)
Dividends to preferred shareholders		(3,100	)		(3,100	)
Distributions to consolidated joint venture partners		89			—
Distributions to noncontrolling interests		(394	)		(390	)
Stock option exercises		79			86
Net cash (used in) provided by financing activities		(14,619	)		9,662
Net increase in cash and cash equivalents		6,102			8,420
Cash and cash equivalents, beginning of period		8,740			9,374
Cash and cash equivalents, end of period	$	14,842		$	17,794

See accompanying notes to condensed consolidated financial statements.

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FIRST POTOMAC REALTY TRUST

Consolidated Statements of Cash Flows – Continued

(unaudited)

Supplemental disclosure of cash flow information for the three months ended March 31 is as follows (amounts in thousands):

	2014			2013
Cash paid for interest, net	$	5,373		$	9,865
Non-cash investing and financing activities:
Value of common shares issued to settle federal income tax obligations		383			448
Change in fair value of the outstanding common Operating Partnership units		2,027			5,067
Issuance of common Operating Partnership units in connection with the acquisition of real estate		40			—
Changes in accruals:
Additions to rental property and furniture, fixtures and equipment		371			(2,012	)
Additions to development and redevelopment		(1,768	)		(3,896	)

Cash paid for interest on indebtedness is net of capitalized interest of $0.8 million and $0.3 million for the three months ended March 31, 2014 and 2013, respectively.

Certain of our employees surrendered common shares owned by them valued at $0.4 million during both the three months ended March 31, 2014 and 2013, to satisfy their statutory minimum federal income tax obligations associated with the vesting of restricted common shares of beneficial interest.

Noncontrolling interests are presented at the greater of their fair value or their cost basis, which is comprised of their fair value at issuance, subsequently adjusted for the noncontrolling interests’ share of net income or losses available to common shareholders, other comprehensive income or losses, distributions received or additional contributions. We account for issuances of common Operating Partnership units individually, which could result in some portion of our noncontrolling interests being carried at fair value with the remainder being carried at historical cost. At March 31, 2014 and 2013, we recorded adjustments of $5.3 million and $8.6 million, respectively, to present certain common Operating Partnership units at the greater of their carrying value or redemption value.

During the first quarter of 2014, we issued 3,125 common Operating Partnership units at a fair value of $40 thousand to the seller of 840 First Street, NE to satisfy our contingent consideration obligation related to the acquisition of the property.

During the three months ended March 31, 2014 and 2013, we accrued $6.6 million and $9.1 million, respectively, of capital expenditures related to rental property and furniture, fixtures and equipment in accounts payable. During the three months ended March 31, 2014 and 2013, we accrued $1.9 million and $2.6 million, respectively, of capital expenditures related to development and redevelopment in accounts payable.

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FIRST POTOMAC REALTY TRUST

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(1) Description of Business

First Potomac Realty Trust (the “Company”) is a leader in the ownership, management, development and redevelopment of office and business park properties in the greater Washington, D.C. region. The Company separates its properties into four distinct reporting segments, which it refers to as the Washington, D.C., Maryland, Northern Virginia and Southern Virginia reporting segments. The Company strategically focuses on acquiring and redeveloping properties that it believes can benefit from our intensive property management, leasing expertise, market knowledge and established relationships, and seeks to reposition these properties to increase their profitability and value. The Company’s portfolio primarily contains a mix of single-tenant and multi-tenant office properties and business parks. Office properties are single-story and multi-story buildings that are primarily for office use; and business parks contain buildings with office features combined with some industrial property space.

References in these unaudited condensed consolidated financial statements to “we,” “our,” “us,” “the Company” or “First Potomac,” refer to the Company and its subsidiaries, on a consolidated basis, unless the context indicates otherwise.

We conduct our business through First Potomac Realty Investment Limited Partnership, our operating partnership (the “Operating Partnership”). We are the sole general partner of, and, as of March 31, 2014, owned 100% of the preferred interest and 95.7% of the common interest in the Operating Partnership. The remaining common interests in the Operating Partnership, which are presented as noncontrolling interests in the Operating Partnership in the accompanying unaudited condensed consolidated financial statements, are limited partnership interests, some of which are owned by two of our executive officers who contributed properties and other assets to us upon our formation, and the remainder of which are owned by other unrelated parties.

At March 31, 2014, we wholly-owned or had a controlling interest in properties totaling 8.7 million square feet and had a noncontrolling ownership interest in properties totaling an additional 0.9 million square feet through five unconsolidated joint ventures. We also owned land that can support approximately 1.5 million square feet of additional development. Our consolidated properties were 86.0% occupied by 541 tenants at March 31, 2014. We did not include square footage that was in development or redevelopment in our occupancy calculation, which totaled 0.1 million square feet at March 31, 2014. We derive substantially all of our revenue from leases of space within our properties. The U.S. Government, our largest tenant, accounted for 48% of our outstanding accounts receivable at March 31, 2014. In April 2014, we received outstanding rent payments of $3.5 million from the U.S. Government, which accounted for 58% of their outstanding balance. We operate so as to qualify as a real estate investment trust (“REIT”) for federal income tax purposes.

(2) Summary of Significant Accounting Policies

(a) Principles of Consolidation

Our unaudited condensed consolidated financial statements include the accounts of our Company and the accounts of the Operating Partnership and the subsidiaries in which we or Operating Partnership has a controlling interest, which includes First Potomac Management LLC, a wholly-owned subsidiary that manages the majority of our properties. All intercompany balances and transactions have been eliminated in consolidation.

We have condensed or omitted certain information and note disclosures normally included in financial statements presented in accordance with U.S. generally accepted accounting principles (“GAAP”) in the accompanying unaudited condensed consolidated financial statements. We believe the disclosures made are adequate to prevent the information presented from being misleading. However, the unaudited condensed consolidated financial statements should be read in conjunction with the consolidated financial statements and notes thereto included in our annual report on Form 10-K for the year ended December 31, 2013 and as updated from time to time in other filings with the U.S. Securities and Exchange Commission (the “SEC”).

In our opinion, the accompanying unaudited condensed consolidated financial statements reflect all adjustments, consisting of normal recurring adjustments and accruals necessary to present fairly our financial position as of March 31, 2014 and the results of our operations, our comprehensive (loss) income and our cash flows for the three months ended March 31, 2014 and 2013. Interim results are not necessarily indicative of full-year performance due, in part, to the timing of transactions and the impact of acquisitions and dispositions throughout the year as well as the seasonality of certain operating expenses such as utilities expense and snow and ice removal costs.

9

(b) Use of Estimates

The preparation of condensed consolidated financial statements in conformity with GAAP requires our management team to make a number of estimates and assumptions relating to the reported amounts of assets and liabilities and the disclosure of contingent assets and liabilities at the date of the condensed consolidated financial statements and the reported amounts of revenues and expenses during the period. Estimates include the amount of accounts receivable that may be uncollectible; recoverability of notes receivable, future cash flows, discount and capitalization rate assumptions used to fair value acquired properties and to test impairment of certain long-lived assets and goodwill; derivative valuations; market lease rates, lease-up periods, leasing and tenant improvement costs used to fair value intangible assets acquired and probability weighted cash flow analysis used to fair value contingent liabilities. Actual results could differ from those estimates.

(c) Rental Property

Rental property is initially recorded at fair value, if acquired in a business combination, or initial cost when constructed or acquired in an asset purchase, less accumulated depreciation and, when appropriate, impairment losses. Improvements and replacements are capitalized at cost when they extend the useful life, increase capacity or improve the efficiency of the asset. Repairs and maintenance are charged to expense when incurred. Depreciation and amortization are recorded on a straight-line basis over the estimated useful lives of the assets. The estimated useful lives of our assets, by class, are as follows:

Buildings	39 years
Building improvements	5 to 20 years
Furniture, fixtures and equipment	5 to 15 years
Lease related intangible assets	The term of the related lease
Tenant improvements	Shorter of the useful life of the asset or the term of the related lease

We regularly review market conditions for possible impairment of a property’s carrying value. When circumstances such as adverse market conditions, changes in management’s intended holding period or potential sale to a third party indicate a possible impairment of the carrying value of a property, an impairment analysis is performed. We assess potential impairments based on an estimate of the future undiscounted cash flows (excluding interest charges) expected to result from the property’s use and eventual disposition. This estimate is based on projections of future revenues, expenses, capital improvement costs to maintain the operating capacity, expected holding periods and capitalization rates. These cash flows consider factors such as expected market trends and leasing prospects, as well as the effects of leasing demand, competition and other factors. If impairment exists due to the inability to recover the carrying value of a real estate investment based on forecasted undiscounted cash flows, an impairment loss is recorded to the extent that the carrying value exceeds the estimated fair value of the property. We are required to make estimates as to whether there are impairments in the carrying values of our investments in real estate. Further, we will record an impairment loss if we expect to dispose of a property, in the near term, at a price below carrying value. In such an event, we will record an impairment loss based on the difference between a property’s carrying value and our projected sales price less any estimated costs to sell.

We will classify a building as held-for-sale in accordance with GAAP in the period in which we have made the decision to dispose of the building, our Board of Trustees or a designated delegate has approved the sale, there is a high likelihood a binding agreement to purchase the property will be signed under which the buyer will be required to commit a significant amount of nonrefundable cash and no significant financing contingencies exist that could cause the transaction not to be completed in a timely manner. If these criteria are met, we will cease depreciation of the asset. We will classify any impairment loss, together with the building’s operating results, as discontinued operations in our consolidated statements of operations for all periods presented and classify the assets and related liabilities as held-for-sale in our consolidated balance sheets in the period the held-for-sale criteria are met. Interest expense is reclassified to discontinued operations only to the extent the held-for-sale property is secured by specific mortgage debt and the mortgage debt will not be assigned to another property owned by us after the disposition. However, in April 2014, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update No. 2014-08, Reporting Discontinued Operations and Disclosures of Disposals of Components of an Entity (“ASU 2014-08”), which will impact the future presentation of operations and gain or losses from disposed properties. For more information, see footnote 2(f), Summary of Significant Accounting Policies – Application of New Accounting Standards.

We recognize the fair value, if sufficient information exists to reasonably estimate the fair value, of any liability for conditional asset retirement obligations when assumed or incurred, which is generally upon acquisition, construction, development or redevelopment and/or through the normal operation of the asset.

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We capitalize interest costs incurred on qualifying expenditures for real estate assets under development or redevelopment, which include our investment in assets owned through unconsolidated joint ventures that are under development or redevelopment, while being readied for their intended use in accordance with accounting requirements regarding capitalization of interest. We will capitalize interest when qualifying expenditures for the asset have been made, activities necessary to get the asset ready for its intended use are in progress and interest costs are being incurred. Capitalized interest also includes interest associated with expenditures incurred to acquire developable land while development activities are in progress. We also capitalize direct compensation costs of our construction personnel who manage the development and redevelopment projects, but only to the extent the employee’s time can be allocated to a project. Any portion of construction management costs not directly attributable to a specific project are recognized as general and administrative expense in the period incurred. We do not capitalize any other general and administrative costs such as office supplies, office rent expense or an overhead allocation to our development or redevelopment projects. Capitalized compensation costs were immaterial for the three months ended March 31, 2014 and 2013. Capitalization of interest will end when the asset is substantially complete and ready for its intended use, but no later than one year from completion of major construction activity, if the property is not occupied. We will also place redevelopment and development assets into service at this time and commence depreciation upon the substantial completion of tenant improvements and the recognition of revenue. Capitalized interest is depreciated over the useful life of the underlying assets, commencing when those assets are placed into service.

(d) Notes Receivable

We provide loans to the owners of real estate properties, which can be collateralized by interest in the real estate property. We record these loans as “Notes receivable, net” in our consolidated balance sheets. The loans are recorded net of any discount or issuance costs, which are amortized over the life of the respective note receivable using the effective interest method. We record interest earned from notes receivable and amortization of any discount or issuance costs within “Interest and other income” in our consolidated statements of operations.

We will establish a provision for anticipated credit losses associated with our notes receivable when we anticipate that we may be unable to collect any contractually due amounts. This determination is based upon such factors as delinquencies, loss experience, collateral quality and current economic or borrower conditions. Our collectability of our notes receivable may be adversely impacted by the financial stability of the Washington, D.C. region and the ability of the underlying assets to keep current tenants or attract new tenants. Estimated losses are recorded as a charge to earnings to establish an allowance for credit losses that we estimate to be adequate based on these factors. Based on the review of the above criteria, we did not record an allowance for credit losses for our notes receivable during the three months ended March 31, 2014 and 2013.

(e) Reclassifications

Certain prior year amounts have been reclassified to conform to the current year presentation, primarily as a result of reclassifying the operating results of several properties as discontinued operations. For more information, see note 7, Discontinued Operations. In April 2014, the FASB issued ASU 2014-08, which will impact the future presentation of operations and gains or losses from disposed properties. For more information, see footnote 2(f), Summary of Significant Accounting Policies – Application of New Accounting Standards.

(f) Application of New Accounting Standards

In April 2014, the FASB issued ASU 2014-08, which changes the criteria for reporting discontinued operations and requires additional disclosures about discontinued operations. ASU 2014-08 requires that an entity report as a discontinued operation only a disposal that represents a strategic shift in operations that has a major effect on its operations and financial results. ASU 2014-08 permits an entity to report a discontinued operation if it has continuing cash flows and significant continuing involvement with the disposed component after the disposal. ASU 2014-08 is effective for fiscal years, and interim periods within those fiscal years, beginning on or after December 15, 2014. Early adoption is permitted, but only for a disposal (or classification as held-for-sale) that has not been reported in financial statements previously issued or available for issuance. ASU 2014-08 must be applied prospectively. We anticipate adopting the requirements of ASU 2014-08 in the second quarter of 2014. The adoption of ASU 2014-08 will not have a material impact on our consolidated financial statements, though it will impact the extent and frequency of presenting discontinued operations within our statements of operations and footnote disclosures. All property operations that have been classified as discontinued operations will remain classified within discontinued operations in any future presentation of our statements of operations.

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(3) Earnings Per Common Share

Basic earnings or loss per common share (“EPS”) is calculated by dividing net income or loss attributable to common shareholders by the weighted average common shares outstanding for the periods presented. Diluted EPS is computed after adjusting the basic EPS computation for the effect of dilutive common equivalent shares outstanding during the periods presented, which include stock options, non-vested shares and preferred shares. We apply the two-class method for determining EPS as our outstanding unvested shares with non-forfeitable dividend rights are considered participating securities. Our excess of distributions over earnings related to participating securities is shown as a reduction in total earnings attributable to common shareholders in our computation of EPS.

The following table sets forth the computation of our basic and diluted earnings per common share (amounts in thousands, except per share amounts):

	Three Months Ended March 31,
	2014			2013
Numerator for basic and diluted earnings per common share:
Loss from continuing operations	$	(401	)	$	(3,318	)
(Loss) income from discontinued operations		(1,042	)		5,281
Net (loss) income		(1,443	)		1,963
Less: Net loss from continuing operations attributable to noncontrolling interests		150			314
Less: Net loss (income) from discontinued operations attributable to noncontrolling interests		45			(255	)
Net (loss) income attributable to First Potomac Realty Trust		(1,248	)		2,022
Less: Dividends on preferred shares		(3,100	)		(3,100	)
Net loss attributable to common shareholders		(4,348	)		(1,078	)
Less: Allocation to participating securities		(78	)		(99	)
Net loss attributable to common shareholders	$	(4,426	)	$	(1,177	)
Denominator for basic and diluted earnings per common share:
Weighted average shares outstanding – basic and diluted		58,097			50,404
Basic and diluted earnings per common share:
Loss from continuing operations	$	(0.06	)	$	(0.12	)
(Loss) income from discontinued operations		(0.02	)		0.10
Net loss	$	(0.08	)	$	(0.02	)

In accordance with GAAP regarding earnings per common share, we did not include the following potential weighted average common shares in our calculation of diluted earnings per common share as they are anti-dilutive for the periods presented (amounts in thousands):

	Three Months Ended March 31,
	2014		2013
Stock option awards		1,206		1,495
Non-vested share awards		414		533
Series A Preferred Shares(1)		12,671		11,643
		14,291		13,671

⁽¹⁾  Our Series A Preferred Shares are only convertible into our common shares upon certain changes in control of our Company. The dilutive shares are calculated as the daily average of the face value of the Series A Preferred Shares divided by the outstanding common share price.

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(4) Rental Property

Rental property represents buildings and related improvements, net of accumulated depreciation, and developable land that are wholly-owned or owned by an entity in which we have a controlling interest. All of our rental properties are located within the greater Washington, D.C. region. Rental property, excluding properties classified as held-for-sale, consists of the following (dollars in thousands):

	March 31, 2014			December 31, 2013
Land and land improvements	$	294,819		$	294,753
Buildings and improvements		867,480			868,027
Construction in process		99,712			93,269
Tenant improvements		148,418			146,176
Furniture, fixtures and equipment		5,098			5,047
		1,415,527			1,407,272
Less: accumulated depreciation		(214,512	)		(203,973	)
	$	1,201,015		$	1,203,299

Development and Redevelopment Activity

We construct office buildings and/or business parks on a build-to-suit basis or with the intent to lease upon completion of construction. We own developable land that can accommodate 1.5 million square feet of additional building space, of which, 0.7 million is located in the Washington, D.C. reporting segment, 0.1 million in the Maryland reporting segment, 0.6 million in the Northern Virginia reporting segment and 0.1 million in the Southern Virginia reporting segment.

On August 4, 2011, we formed a joint venture, in which we have a 97% interest, with an affiliate of Perseus Realty, LLC to acquire Storey Park in our Washington, D.C. reporting segment. At the time, the site was leased to Greyhound Lines, Inc. (“Greyhound”), which subsequently relocated its operations. Greyhound’s lease expired on August 31, 2013, at which time the property was placed into development. The joint venture anticipates developing a mixed-use project on the 1.6 acre site, which can accommodate up to 712,000 square feet of office space. At March 31, 2014, the total investment in the development project was $51.2 million, which included the original cost basis of the property of $43.3 million.

On December 28, 2010, we acquired 440 First Street, NW, a vacant eight-story office building in our Washington, D.C. reporting segment. In October 2013, we substantially completed the redevelopment of the 139,000 square foot property. During 2013, we placed in-service 19,763 square feet of office space at the property. At March 31, 2014, our total investment in the redevelopment project was $54.3 million, which included the original cost basis of the property of $23.6 million.

We will place completed construction activities in service upon the earlier of a tenant taking occupancy or twelve months from substantial completion. At March 31, 2014, we had 119,510 square feet of redevelopment efforts at 440 First Street, NW that have yet to be placed-in service. At March 31, 2014, we had no completed development efforts that have yet to be placed in service. We did not place any development or redevelopment efforts into service during the first quarter of 2014.

(5) Notes Receivable

Below is a summary of our notes receivable (dollars in thousands):

Balance at March 31, 2014
Face Amount		Unamortized Origination Fees			Balance		Interest Rate			Property
$	34,000	$	—		$	34,000		9.75	%		950 F Street, NW
	29,844		(62	)		29,782		9.0	%		America’s Square
$	63,844	$	(62	)	$	63,782

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Balance at December 31, 2013
Face Amount		Unamortized Origination Fees			Balance		Interest Rate			Property
$	25,000	$	(130	)	$	24,870		12.5	%		950 F Street, NW
	29,896		(70	)		29,826		9.0	%		America’s Square
$	54,896	$	(200	)	$	54,696

In April 2011, we provided a $30.0 million mezzanine loan to the owners of America’s Square, a 461,000 square-foot office complex located in Washington, D.C. that is secured by a portion of the owners’ interest in the property. The loan is repayable in full at any time, subject to yield maintenance. The loan matures on May 1, 2016 and required monthly interest-only payments until May 2013, at which time the loan began requiring monthly principal and interest payments through its maturity date. The interest rate on the loan is constant throughout the life of the loan.

In December 2010, we provided a $25.0 million mezzanine loan to the owners of 950 F Street, NW, a ten-story, 287,000 square-foot office/retail building located in Washington, D.C. that is secured by a portion of the owners’ interest in the property. The loan requires monthly interest-only payments with a constant interest rate over the life of the loan. The loan was pre-payable without penalty prior to December 21, 2013. On January 10, 2014, we amended the loan to increase the outstanding balance to $34.0 million and reduce the fixed interest rate from 12.5% to 9.75%. The amended mezzanine loan matures on April 1, 2017 and is repayable in full on or after December 21, 2015. The $9.0 million increase in the loan was provided by a draw under our unsecured revolving credit facility.

During both the three months ended March 31, 2014 and 2013, we recorded interest income of $1.5 million related to our notes receivable, which is included within “Interest and other income” in our consolidated statements of operations.

We recorded income from the amortization of origination fees of $11 thousand and $17 thousand for the three months ended March 31, 2014 and 2013, respectively. During the first quarter of 2014, we wrote-off $0.1 million of unamortized fees related to the original 950 F Street, NW mezzanine loan. The amortization and write-off of unamortized fees are recorded within “Interest and other income” in our consolidated statements of operations.

(6) Investment in Affiliates

We own an interest in several joint ventures that own properties. We do not control the activities that are most significant to the joint ventures. As a result, the assets, the liabilities and the operating results of these noncontrolled joint ventures are not consolidated within our unaudited condensed consolidated financial statements. Our investments in these joint ventures are recorded as “Investment in affiliates” in our consolidated balance sheets. Our investment in affiliates consisted of the following (dollars in thousands):

	Reporting Segment	Ownership Interest			March 31, 2014		December 31, 2013
Prosperity Metro Plaza	Northern Virginia		51	%	$	24,527	$	24,735
1750 H Street, NW	Washington, D.C.		50	%		16,711		16,780
Aviation Business Park	Maryland		50	%		4,977		5,008
RiversPark I and II	Maryland		25	%		2,603		2,627
					$	48,818	$	49,150

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The net assets of our unconsolidated joint ventures consisted of the following (dollars in thousands):

	March 31, 2014		December 31, 2013
Assets:
Rental property, net	$	193,783	$	194,240
Cash and cash equivalents		4,349		3,680
Other assets		15,205		15,585
Total assets		213,337		213,505
Liabilities:
Mortgage loans(1)(2)		105,595		106,384
Other liabilities		6,378		5,046
Total liabilities		111,973		111,430
Net assets	$	101,364	$	102,075

⁽¹⁾  Of the total mortgage debt that encumbers our unconsolidated properties, $7.0 million is recourse to us. The recourse mortgage loan was scheduled to mature in March 2014; however, the joint venture extended the loan’s maturity date to September 2014. We believe the fair value of the potential liability to us under this guaranty is inconsequential as the likelihood of our need to perform under the debt agreement is remote.

⁽²⁾  Includes the unamortized fair value adjustments recorded at acquisition upon the assumption of mortgage loans.

Our share of earnings or losses related to our unconsolidated joint ventures is recorded in our consolidated statements of operations as “Equity in losses (earnings) of affiliates.”

The following table summarizes the results of operations of our unconsolidated joint ventures, which due to our varying ownership interests in the joint ventures and the varying operations of the joint ventures may or may not be reflective of the amounts recorded in our unaudited consolidated statements of operations (dollars in thousands):

	Three Months Ended March 31,
	2014			2013
Total revenues	$	5,752		$	6,052
Total operating expenses		(2,226	)		(1,865	)
Net operating income		3,526			4,187
Depreciation and amortization		(2,803	)		(2,939	)
Other expenses, net		(1,011	)		(1,074	)
Net (loss) income	$	(288	)	$	174

We earn various fees from several of our joint ventures, which include management fees, leasing commissions and construction management fees. We recognize fees only to the extent of the third party ownership interest in our unconsolidated joint ventures. We recognized fees from our unconsolidated joint ventures of $0.1 million and $0.2 million during the three months ended March 31, 2014 and 2013, respectively, which are reflected within “Tenant reimbursements and other revenues” in our consolidated statements of operations.

(7) Discontinued Operations

In January 2014, we sold a portfolio of properties that consisted of Girard Business Center, a seven-building, 297,000 square foot business park, and Gateway Center, a two-building, 45,000 square foot office park, which are both located in Gaithersburg, Maryland, for aggregate net proceeds of $31.6 million. Proceeds from the sale were used to pay down outstanding debt. We reported a gain on the sale of the portfolio of $0.1 million in our first quarter 2014 results.

At March 31, 2014, our Patrick Center and West Park properties met our held-for-sale criteria (described in note 2(g), Rental Property) and, therefore, the assets of the buildings were classified within “Assets held-for-sale” and the liabilities of the buildings, which totaled $0.2 million, were classified within “Accounts payable and other liabilities” in our consolidated balance sheet. We sold our Patrick Center and West Park properties in April 2014 for aggregate net proceeds of $13.8 million. The operating results of the properties are reflected as discontinued operations in our consolidated statements of operations for the periods presented.

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The following table is a summary of completed property dispositions whose operating results are reflected as discontinued operations in our consolidated statements of operations for the periods presented:

	Reporting Segment	Disposition Date	Property Type	Square Feet
Patrick Center(1)	Maryland	4/16/2014	Office		66,269
West Park(1)	Maryland	4/2/2014	Office		28,333
Girard Business Center and Gateway Center	Maryland	1/29/2014	Business Park and Office		341,973
Worman’s Mill Court	Maryland	11/19/2013	Office		40,099
Triangle Business Center	Maryland	9/27/2013	Business Park		74,429
4200 Tech Court	Northern Virginia	8/15/2013	Office		33,875
Industrial Portfolio(2)	Various	May/June 2013	Industrial		4,280,985
4212 Tech Court	Northern Virginia	6/5/2013	Office		32,055

⁽¹⁾  Classified as held-for-sale at March 31, 2014 and subsequently sold in April 2014.

⁽²⁾  During the second quarter of 2013, we sold 24 industrial properties, which consisted of two separate transactions. On May 7, 2013, we sold I-66 Commerce Center, a 236,000 square foot industrial property in Haymarket, Virginia. On June 18, 2013, we completed the sale of the remaining 23 industrial properties.

We have had, and will have, no continuing involvement with any of our disposed properties subsequent to their disposal. The operations of the disposed properties were not subject to any income based taxes. We did not dispose of or enter into any binding agreements to sell any other properties during the three months ended March 31, 2014 and 2013.

The operating results of the disposed properties and properties classified as held-for-sale, including any gains or losses on sale of the properties, are reflected as discontinued operations in our consolidated statements of operations for the periods presented. In April 2014, the FASB issued ASU 2014-08, which will impact the future presentation of operations and gains or losses from disposed properties. For more information, see footnote 2(f), Summary of Significant Accounting Policies – Application of New Accounting Standards.

The following table summarizes the components of net (loss) income from discontinued operations for the three months ended March 31 (dollars in thousands):

	2014			2013
Revenues	$	802		$	12,299
Net (loss) income, before taxes(1)		(1,096	)		5,281
Gain on sale of real estate property		54			—

⁽¹⁾  For the three months ended March 31, 2014, we accelerated $1.0 million of unamortized straight-line rent and deferred abatement costs related to the sale of Girard Business Center and Gateway Center.

(8) Debt

Our borrowings consisted of the following (dollars in thousands):

	March 31, 2014		December 31, 2013
Mortgage loans, effective interest rates ranging from 4.40% to 6.63%, maturing at various dates through July 2022(1)	$	275,095	$	274,648
Unsecured term loan, effective interest rates ranging from LIBOR plus 1.45% to LIBOR plus 1.90%, with staggered maturity dates ranging from October 2018 to October 2020(1)		300,000		300,000
Unsecured revolving credit facility, effective interest rate of LIBOR plus 1.50%, maturing October 2017(1)		96,000		99,000
	$	671,095	$	673,648

⁽¹⁾ At March 31, 2014, LIBOR was 0.15%. All references to LIBOR in the condensed consolidated financial statements refer to one-month LIBOR.

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(a) Mortgage Loans

The following table provides a summary of our mortgage debt at March 31, 2014 and December 31, 2013 (dollars in thousands):

Encumbered Property	Contractual Interest Rate	Effective Interest Rate			Maturity Date		March 31, 2014			December 31, 2013
Annapolis Business Center	5.74%		6.25	%		June 2014	$	8,035		$	8,076
Storey Park(1)(2)	LIBOR + 2.75%		5.80	%		October 2014		22,000			22,000
Jackson National Life Loan(3)	5.19%		5.19	%		August 2015		65,829			66,116
Hanover Business Center Building D	8.88%		6.63	%		August 2015		216			252
Chesterfield Business Center Buildings C,D,G and H	8.50%		6.63	%		August 2015		589			681
440 First Street, NW Construction Loan(1)(4)	LIBOR + 2.50%		4.78	%		May 2016		23,493			21,699
Gateway Centre Manassas Building I	7.35%		5.88	%		November 2016		588			638
Hillside I and II	5.75%		4.62	%		December 2016		13,248			13,349
Redland Corporate Center Buildings II & III	4.20%		4.64	%		November 2017		66,737			67,038
Hanover Business Center Building C	7.88%		6.63	%		December 2017		617			653
840 First Street, NE	5.72%		6.01	%		July 2020		37,000			37,151
Battlefield Corporate Center	4.26%		4.40	%		November 2020		3,812			3,851
Chesterfield Business Center Buildings A,B,E and F	7.45%		6.63	%		June 2021		1,824			1,873
Airpark Business Center	7.45%		6.63	%		June 2021		995			1,022
1211 Connecticut Avenue, NW	4.22%		4.47	%		July 2022		30,112			30,249
			5.12	%(5)				275,095			274,648
Unamortized fair value adjustments								(612	)		(663	)
Total contractual principal balance							$	274,483		$	273,985

⁽¹⁾ At March 31, 2014, LIBOR was 0.15%.

⁽²⁾  The loan incurs interest at a variable rate of LIBOR plus a spread of 2.75% (with a floor of 5.0%) and matures in October 2014, with a one-year extension at our option.

⁽³⁾  At March 31, 2014, the loan was secured by the following properties: Plaza 500, Van Buren Office Park, Rumsey Center, Snowden Center, Greenbrier Technology Center II and Norfolk Business Center. The terms of the loan allow our Company to substitute collateral, as long as certain debt-service coverage and loan-to-value ratios are maintained, or to prepay a portion of the loan, with a prepayment penalty, subject to a debt-service yield.

⁽⁴⁾  In January 2014, we borrowed an additional $1.8 million under the construction loan.

⁽⁵⁾ Weighted average interest rate on total mortgage debt.

Construction Loan

On June 5, 2013, we entered into a construction loan (the “Construction Loan”) that is collateralized by our 440 First Street, NW property, which underwent a major redevelopment that was substantially completed in October 2013. The Construction Loan has a borrowing capacity of up to $43.5 million, of which we initially borrowed $21.7 million in the second quarter of 2013 and borrowed an additional $1.8 million in January 2014. The Construction Loan has a variable interest rate of LIBOR plus a spread of 2.5% and matures in May 2016, with two one-year extension options at our discretion. We can repay all or a portion of the Construction Loan, without penalty, at any time during the term of the loan. At March 31, 2014, per the terms of the loan agreement, 50% of the outstanding principal balance and all of the outstanding accrued interest were recourse to us. The percentage of outstanding principal balance that is recourse to us can be reduced upon the property achieving certain operating thresholds. As of March 31, 2014, we were in compliance with all the financial covenants of the Construction Loan.

(b) Unsecured Term Loan

The table below shows the outstanding balances and the interest rates of the three tranches of the $300.0 million unsecured term loan at March 31, 2014 (dollars in thousands):

	Maturity Date	Amount		Interest Rate(1)
Tranche A	October 2018	$	100,000	LIBOR, plus 145 basis points
Tranche B	October 2019		100,000	LIBOR, plus 160 basis points
Tranche C	October 2020		100,000	LIBOR, plus 190 basis points
		$	300,000

⁽¹⁾  The interest rate spread is subject to change based on our maximum total indebtedness ratio. For more information, see note 8(e) Debt – Financial Covenants.

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The term loan agreement contains various restrictive covenants substantially identical to those contained in our unsecured revolving credit facility, including with respect to liens, indebtedness, investments, distributions, mergers and asset sales. In addition, the agreement requires that we satisfy certain financial covenants that are also substantially identical to those contained in our unsecured revolving credit facility. The agreement also includes customary events of default, the occurrence of which, following any applicable cure period, would permit the lenders to, among other things, declare the principal, accrued interest and other obligations of our Company under the agreement to be immediately due and payable. As of March 31, 2014, we were in compliance with all the financial covenants of the unsecured term loan.

(c) Unsecured Revolving Credit Facility

During the first quarter of 2014, we borrowed $26.0 million under the unsecured revolving credit facility, which was used to fund a $9.0 million increase to our 950 F Street, NW mezzanine loan and for general corporate purposes. During the first quarter of 2014, we used $29.0 million of proceeds from the sale of Girard Business Center and Gateway Center to pay down a portion of the outstanding balance under the unsecured revolving credit facility. The weighted average borrowings outstanding under the unsecured revolving credit facility were $97.1 million with a weighted average interest rate of 1.7% for the three months ended March 31, 2014, compared with $221.9 million and 2.9%, respectively, for the three months ended March 31, 2013. Our maximum outstanding borrowings were $112.0 million and $230.0 million during the three months ended March 31, 2014 and 2013, respectively. At March 31, 2014, outstanding borrowings under the unsecured revolving credit facility were $96.0 million with a weighted average interest rate of 1.7%. At March 31, 2014, LIBOR was 0.15% and the applicable spread on our unsecured revolving credit facility was 150 basis points. The available capacity under the unsecured revolving credit facility was $120.8 million as of the date of this filing. We are required to pay an annual commitment fee of 0.25% based on the amount of unused capacity under the unsecured revolving credit facility. As of March 31, 2014, we were in compliance with all the financial covenants of the unsecured revolving credit facility.

(d) Interest Rate Swap Agreements

At March 31, 2014, we fixed LIBOR, at a weighted average interest rate of 1.5%, on $300.0 million of our variable rate debt through eleven interest rate swap agreements. In January 2014, an interest rate swap that fixed LIBOR on $50.0 million of variable rate debt expired. See note 9, Derivative Instruments, for more information about our interest rate swap agreements.

(e) Financial Covenants

Our outstanding corporate debt agreements contain specific financial covenants that may impact future financing decisions made by our Company or may be impacted by a decline in operations. These covenants relate to our allowable leverage, minimum tangible net worth, fixed charge coverage and other financial metrics. As of March 31, 2014, we were in compliance with the covenants of our unsecured term loan and unsecured revolving credit facility and any such financial covenants of our mortgage debt (including the Construction Loan).

Our continued ability to borrow under the unsecured revolving credit facility is subject to compliance with financial and operating covenants, and a failure to comply with any of these covenants could result in a default under the credit facility. These debt agreements also contain cross-default provisions that would be triggered if we were in default under other loans, including mortgage loans, in excess of certain amounts. In the event of a default, the lenders could accelerate the timing of payments under the debt obligations and we may be required to repay such debt with capital from other sources, which may not be available on attractive terms, or at all, which would have a material adverse effect on our liquidity, financial condition, results of operations and ability to make distributions to our shareholders.

Our unsecured revolving credit facility and unsecured term loan are subject to interest rate spreads that float based on the quarterly measurement of our maximum consolidated total indebtedness to gross asset value ratio. Based on our leverage ratio at March 31, 2014, the applicable interest rate spreads on the unsecured revolving credit facility and the unsecured term loan will be unchanged.

(9) Derivative Instruments

We are exposed to certain risks arising from business operations and economic factors. We use derivative financial instruments to manage exposure that arise from business activities in which our future exposure to interest rate fluctuations is unknown. The objective in the use of an interest rate derivative is to add stability to interest expenses and manage exposure to interest rate changes. We do not use derivatives for trading or speculative purposes and intend to enter into derivative agreements only with counterparties that we believe have a strong credit rating to mitigate the risk of counterparty default or insolvency. No hedging activity can completely insulate us from the risks associated with changes in interest rates. Moreover, interest rate hedging could fail to protect us or adversely affect us because, among other things:

• available interest rate hedging may not correspond directly with the interest rate risk for which we seek protection;

• the duration of the hedge may not match the duration of the related liability;

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• the party owing money in the hedging transaction may default on its obligation to pay; and

• the credit quality of the party owing money on the hedge may be downgraded to such an extent that it impairs our ability to sell or assign our side of the hedging transaction.

We enter into interest rate swap agreements to hedge our exposure on our variable rate debt against fluctuations in prevailing interest rates. The interest rate swap agreements fix LIBOR to a specified interest rate; however, the swap agreements do not affect the contractual spreads associated with each variable debt instrument’s applicable interest rate. In January 2014, an interest rate swap that fixed LIBOR on $50.0 million of variable rate debt expired.

At March 31, 2014, we fixed LIBOR at a weighted average interest rate of 1.5% on $300.0 million of our variable rate debt through eleven interest rate swap agreements that are summarized below (dollars in thousands):

Effective Date	Maturity Date	Notional Amount	Interest Rate Contractual Component	Fixed LIBOR Interest Rate
July 2011	July 2016	35,000	LIBOR	1.754%
July 2011	July 2016	25,000	LIBOR	1.763%
July 2011	July 2017	30,000	LIBOR	2.093%
July 2011	July 2017	30,000	LIBOR	2.093%
September 2011	July 2018	30,000	LIBOR	1.660%
January 2012	July 2018	25,000	LIBOR	1.394%
March 2012	July 2017	25,000	LIBOR	1.129%
March 2012	July 2017	12,500	LIBOR	1.129%
March 2012	July 2018	12,500	LIBOR	1.383%
June 2012	July 2017	50,000	LIBOR	0.955%
June 2012	July 2018	25,000	LIBOR	1.135%
Total/Weighted Average		$300,000		1.505%

Our interest rate swap agreements are designated as cash flow hedges and we record any unrealized gains associated with the change in fair value of the swap agreements within “Accumulated other comprehensive loss” and “Prepaid expenses and other assets” and any unrealized losses within “Accumulated other comprehensive loss” and “Accounts payable and other liabilities” on our consolidated balance sheets. We record our proportionate share of any unrealized gains or losses on our cash flow hedges associated with our unconsolidated joint ventures within “Accumulated other comprehensive loss” and “Investment in affiliates” on our consolidated balance sheets. We record any gains or losses incurred as a result of each interest rate swap agreement’s fixed rate deviating from our respective loan’s contractual rate within “Interest expense” in our consolidated statements of operations. We did not have any material ineffectiveness associated with our cash flow hedges during the three months ended March 31, 2014 and 2013.

Amounts reported in accumulated other comprehensive loss related to derivatives will be reclassified to “Interest expense” on our consolidated statements of operations as interest payments are made on our variable-rate debt. We reclassified accumulated other comprehensive loss as an increase to interest expense of $1.0 million and $1.1 million for the three months ended March 31, 2014 and 2013, respectively. As of March 31, 2014, we estimated that $3.8 million of our accumulated other comprehensive loss will be reclassified as an increase to interest expense over the following twelve months.

(10) Fair Value Measurements

We apply GAAP that outlines a valuation framework and creates a fair value hierarchy, which distinguishes between assumptions based on market data (observable inputs) and a reporting entity’s own assumptions about market data (unobservable inputs). The required disclosures increase the consistency and comparability of fair value measurements and the related disclosures. Fair value is identified, under the standard, as the price that would be received to sell an asset or paid to transfer a liability between willing third parties at the measurement date (an exit price). In accordance with GAAP, certain assets and liabilities must be measured at fair value, and we provide the necessary disclosures that are required for items measured at fair value as outlined in the accounting requirements regarding fair value.

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Financial assets and liabilities, as well as those non-financial assets and liabilities requiring fair value measurement, are measured using inputs from three levels of the fair value hierarchy.

The three levels are as follows:

Level 1—Inputs are quoted prices (unadjusted) in active markets for identical assets or liabilities that we have the ability to access at the measurement date. An active market is defined as a market in which transactions for the assets or liabilities occur with sufficient frequency and volume to provide pricing information on an ongoing basis.

Level 2—Inputs include quoted prices for similar assets and liabilities in active markets, quoted prices for identical or similar assets or liabilities in markets that are not active (markets with few transactions), inputs other than quoted prices that are observable for the asset or liability (i.e., interest rates, yield curves, etc.), and inputs derived principally from or corroborated by observable market data correlation or other means (market corroborated inputs).

Level 3—Unobservable inputs, only used to the extent that observable inputs are not available, reflect our assumptions about the pricing of an asset or liability.

In accordance with accounting provisions and the fair value hierarchy described above, the following table shows the fair value of our consolidated assets and liabilities that are measured on a non-recurring and recurring basis as of March 31, 2014 and December 31, 2013 (dollars in thousands):

	Balance at March 31, 2014		Level 1		Level 2		Level 3
Recurring Measurements:
Derivative instrument-swap assets	$	434	$	—	$	434	$	—
Derivative instrument-swap liabilities		4,284		—		4,284		—
	Balance at December 31, 2013		Level 1		Level 2		Level 3
Non-recurring Measurements:
Impaired real estate assets	$	2,909	$	—	$	2,909	$	—
Recurring Measurements:
Derivative instrument-swap assets		551		—		551		—
Derivative instrument-swap liabilities		4,576		—		4,576		—

We did not re-measure or complete any transactions involving non-financial assets or non-financial liabilities that are measured at fair value on a recurring basis during the three months ended March 31, 2014 and 2013. Also, no transfers into or out of fair value measurement levels for assets or liabilities that are measured on a recurring basis occurred during the three months ended March 31, 2014 and 2013.

Impairment of Real Estate Assets

We regularly review market conditions for possible impairment of a property’s carrying value. When circumstances such as adverse market conditions, changes in management’s intended holding period or potential sale to a third party indicate a possible impairment of a property, an impairment analysis is performed.

In April 2014, we sold our West Park property, which is located in our Maryland reporting segment. Based on the anticipated sales price, we recorded an impairment charge of $2.2 million in the fourth quarter of 2013. The property was classified as held-for-sale at both March 31, 2014 and December 31, 2013.

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Interest Rate Derivatives

The interest rate derivatives are fair valued based on prevailing market yield curves on the measurement date and also take into consideration the credit valuation adjustment of the counter-party in determining the fair value of counterparty credit risk associated with our interest rate swap agreements. We use a third party to assist in valuing our interest rate swap agreements. A daily “snapshot” of the market is taken to obtain close of business rates. The snapshot includes over 7,500 rates including LIBOR fixings, Eurodollar futures, swap rates, exchange rates, treasuries, etc. This market data is obtained via direct feeds from Bloomberg and Reuters and from Inter-Dealer Brokers. The selected rates are compared to their historical values. Any rate that has changed by more than normal mean and related standard deviation would be considered an outlier and flagged for further investigation. The rates are then compiled through a valuation process that generates daily valuations, which are used to value our interest rate swap agreements. Our interest rate swap derivatives are effective cash flow hedges and the effective portion of the change in fair value is recorded in the equity section of our consolidated balance sheets as “Accumulated other comprehensive loss.”

Financial Instruments

The carrying amounts of cash equivalents, accounts and other receivables, accounts payable and other liabilities, with the exception of any items listed above, approximate their fair values due to their short-term maturities. We determine the fair value of our notes receivable and debt instruments by discounting future contractual principal and interest payments using prevailing market rates for securities with similar terms and characteristics at the balance sheet date. We deem the fair value measurement of our debt instruments as a Level 2 measurement as we use quoted interest rates for similar debt instruments to value our debt instruments. We also use quoted market interest rates to value our notes receivable, which we consider a Level 2 measurement as we do not believe notes receivable trade in an active market.

The carrying value and estimated fair value of our financial assets and liabilities are as follows (dollars in thousands):

	March 31, 2014				December 31, 2013
	Carrying Value		Fair Value		Carrying Value		Fair Value
Financial Assets:
Notes receivable(1)	$	63,782	$	63,844	$	54,696	$	56,812
Financial Liabilities:
Mortgage debt	$	275,095	$	264,213	$	274,648	$	262,873
Unsecured term loan		300,000		300,000		300,000		300,000
Unsecured revolving credit facility		96,000		96,000		99,000		99,000
Total	$	671,095	$	660,213	$	673,648	$	661,873

⁽¹⁾  The principal amount of our notes receivable was $63.8 million and $54.9 million at March 31, 2014 and December 31, 2013, respectively. On January 10, 2014, we amended the 950 F Street, NW mezzanine loan and increased the outstanding balance to $34.0 million.

(11) Equity

On January 29, 2014, we declared a dividend of $0.15 per common share, equating to an annualized dividend of $0.60 per common share. The dividend was paid on February 18, 2014 to common shareholders of record as of February 10, 2014. We also declared a dividend of $0.484375 per share on our Series A Preferred Shares. The dividend was paid on February 18, 2014 to preferred shareholders of record as of February 10, 2014.

On April 22, 2014, we declared a dividend of $0.15 per common share, equating to an annualized dividend of $0.60 per common share. The dividend will be paid on May 15, 2014 to common shareholders of record as of May 6, 2014. We also declared a dividend of $0.484375 per share on our Series A Preferred Shares. The dividend will be paid on May 15, 2014 to preferred shareholders of record as of May 6, 2014. Dividends on all non-vested share awards are recorded as a reduction of shareholders’ equity. For each dividend paid by us on our common and preferred shares, the Operating Partnership distributes an equivalent distribution on our common and preferred Operating Partnership units, respectively.

Our unsecured revolving credit facility, unsecured term loan and the Construction Loan contain certain restrictions that include, among other things, requirements to maintain specified coverage ratios and other financial covenants, which may limit our Company’s ability to make distributions to our common and preferred shareholders. Further, distributions with respect to our common shares are subject to our ability to first satisfy our obligations to pay distributions to the holders of our Series A Preferred Shares.

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As a result of the redemption feature of the Operating Partnership units, the noncontrolling interests associated with the Operating Partnership are recorded outside of permanent equity. Our equity and redeemable noncontrolling interests are as follows (dollars in thousands):

	First Potomac Realty Trust			Non-redeemable noncontrolling interests		Total Equity			Redeemable noncontrolling interests
Balance at December 31, 2013	$	738,510		$	781	$	739,291		$	33,221
Net loss		(1,248	)		—		(1,248	)		(195	)
Changes in ownership, net		(1,502	)		89		(1,413	)		2,067
Distributions to owners		(11,889	)		—		(11,889	)		(393	)
Other comprehensive income		168			—		168			7
Balance at March 31, 2014	$	724,039		$	870	$	724,909		$	34,707

	First Potomac Realty Trust			Non-redeemable noncontrolling interests			Total Equity			Redeemable noncontrolling interests
Balance at December 31, 2012	$	658,765		$	3,728		$	662,493		$	34,367
Net income (loss)		2,022			(5	)		2,017			(54	)
Changes in ownership, net		(4,632	)		—			(4,632	)		5,067
Distributions to owners		(10,755	)		—			(10,755	)		(390	)
Other comprehensive income		1,041			—			1,041			52
Balance at March 31, 2013	$	646,441		$	3,723		$	650,164		$	39,042

A summary of our accumulated other comprehensive loss is as follows (dollars in thousands):

	2014			2013
Beginning balance at January1,	$	(3,836	)	$	(10,917	)
Net gain on derivative instruments		175			1,093
Net gain attributable to noncontrolling interests		(7	)		(52	)
Ending balance at March 31,	$	(3,668	)	$	(9,876	)

(12) Noncontrolling Interests

(a) Noncontrolling Interests in the Operating Partnership

Noncontrolling interests relate to the common interests in the Operating Partnership not owned by us. Interests in the Operating Partnership are owned by limited partners who contributed buildings and other assets to the Operating Partnership in exchange for common Operating Partnership units. Limited partners have the right to tender their units for redemption in exchange for, at our option, our common shares on a one-for-one basis or cash based on the fair value of our common shares at the date of redemption. Unitholders receive a distribution per unit equivalent to the dividend per common share. Differences between amounts paid to redeem noncontrolling interests and their carrying values are charged or credited to equity. As a result of the redemption feature of the Operating Partnership units, the noncontrolling interests are recorded outside of permanent equity.

Noncontrolling interests are presented at the greater of their fair value or their cost basis, which is comprised of their fair value at issuance, subsequently adjusted for the noncontrolling interests’ share of net income or losses available to common shareholders, other comprehensive income or losses, distributions received or additional contributions. We account for issuances of common Operating Partnership units individually, which could result in some portion of our noncontrolling interests being carried at fair value with the remainder being carried at historical cost. Based on the closing price of our common shares at March 31, 2014, the cost to acquire, through cash purchase or issuance of our common shares, all of the outstanding common Operating Partnership units not owned by us would be approximately $34.0 million. At March 31, 2014 and December 31, 2013, we recorded adjustments of $5.3 million and $3.3 million, respectively, to present certain common Operating Partnership units at the greater of their carrying value or redemption value.

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At December 31, 2013, 2,627,452 of the total common Operating Partnership units, or 4.3%, were not owned by us. During the first quarter of 2014, we issued 3,125 common Operating Partnership units at a fair value of $40 thousand to the seller of 840 First Street, NE to satisfy our contingent consideration obligation related to the acquisition of the property. As a result, 2,630,577 of the total common Operating Partnership units, or 4.3%, were not owned by us at March 31, 2014. There were no common Operating Partnership units redeemed for common shares or cash during the three months ended March 31, 2014 and 2013.

(b) Noncontrolling Interests in the Consolidated Partnership

When we are deemed to have a controlling interest in a partially-owned entity, we will consolidate all of the entity’s assets, liabilities and operating results within our condensed consolidated financial statements. The net assets contributed to the consolidated entity by the third party, if any, will be reflected within permanent equity in our consolidated balance sheets to the extent they are not mandatorily redeemable. The amount will be recorded based on the third party’s initial investment in the consolidated entity and will be adjusted to reflect the third party’s share of earnings or losses in the consolidated entity and any distributions received or additional contributions made by the third party. The earnings or losses from the entity attributable to the third party are recorded as a component of “Net loss attributable to noncontrolling interests” in our consolidated statements of operations.

On August 4, 2011, we formed a joint venture, in which we have a 97% interest, with an affiliate of Perseus Realty, LLC to acquire Storey Park in our Washington, D.C. reporting segment. At the time, the site was leased to Greyhound, which subsequently relocated its operations. Greyhound’s lease expired on August 31, 2013, at which time the property was placed into development. The joint venture anticipates developing a mixed-use project on the 1.6 acre site, which can accommodate up to 712,000 square feet of office space. At March 31, 2014, the total investment in the development project was $51.2 million, which included the original cost basis of the property of $43.3 million.

(13) Share-Based Payments

We record costs related to our share-based compensation based on the grant-date fair value calculated in accordance with GAAP. We recognize share-based compensation costs on a straight-line basis over the requisite service period for each award and these costs are recorded within “General and administrative expense” or “Property operating expense” in our consolidated statements of operations based on the employee’s job function.

Stock Options Summary

During the first quarter of 2014, we issued 135,250 stock options to our non-officer employees. The stock options vest 25% on the first anniversary of the date of grant and 6.25% in each subsequent calendar quarter. The award described above has a 10-year contractual life. We recognized compensation expense associated with stock option awards of $137 thousand and $143 thousand during the three months ended March 31, 2014 and 2013, respectively.

A summary of our stock option activity during the three months ended March 31, 2014 is presented below:

	Options			Weighted Average Exercise Price		Weighted Average Remaining Contractual Term		Aggregate Intrinsic Value
Outstanding at December 31, 2013		1,089,292		$	15.83		6.6 years	$	109,151
Granted		135,250			11.61
Exercised		(7,890	)		9.98
Forfeited		(24,253	)		14.85
Outstanding at March 31, 2014		1,192,399		$	15.41		6.7 years	$	350,090
Exercisable at March 31, 2014		559,766		$	16.99		5.0 years	$	146,958
Options expected to vest, subsequent to March 31, 2014		596,192		$	14.14		8.2 years	$	146,157

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As of March 31, 2014, we had $1.8 million of unrecognized compensation cost, net of estimated forfeitures, related to stock option awards. We anticipate this cost will be recognized over a weighted-average period of approximately 4.6 years. We calculate the grant date fair value of option awards using a Black-Scholes option-pricing model. Expected volatility is based on an assessment of our realized volatility over the preceding period that is equivalent to the award’s expected life, which in our opinion, gives an accurate indication of future volatility. The expected term represents the period of time the options are anticipated to remain outstanding as well as our historical experience for groupings of employees that have similar behavior and are considered separately for valuation purposes. The risk-free rate is based on the U.S. Treasury rate at the time of grant for instruments of similar term.

The weighted average assumptions used in the fair value determination of stock options granted to employees in 2014 are summarized as follows:

Risk-free interest rate	1.72	%
Expected volatility	39.04	%
Expected dividend yield	4.66	%
Weighted average expected life of options	5 years

The weighted average grant date fair value of the stock options issued during the three months ended March 31, 2014 was $2.67 per share.

Option Exercises

We received approximately $79 thousand and $86 thousand from the exercise of stock options during the three months ended March 31, 2014 and 2013, respectively. Shares issued as a result of stock option exercises are provided by the issuance of new shares. The total intrinsic value of options exercised during the three months ended March 31, 2014 and 2013 was $18 thousand and $26 thousand, respectively.

Non-Vested Share Awards

We issue non-vested common share awards that either vest over a specific time period that is identified at the time of issuance or vest upon the achievement of specific performance goals that are identified at the time of issuance. We issue new common shares, subject to restrictions, upon each grant of non-vested common share awards. In February 2014, we granted a total of 103,075 non-vested common shares in two separate awards to our officers. The first award of 91,466 non-vested common shares, which was granted to all of our officers, will vest ratably on the date of issuance over a three-year term. The second award of 11,609 non-vested common shares, which was granted to our Chief Executive Officer, will vest on the one-year anniversary of the date of issuance.

We recognized $0.7 million and $0.6 million of compensation expense associated with our non-vested common share awards during the three months ended March 31, 2014 and 2013, respectively. Dividends on all non-vested common share awards are recorded as a reduction of equity. We apply the two-class method for determining EPS as our outstanding non-vested common shares with non-forfeitable dividend rights are considered participating securities. Our excess of dividends over earnings related to participating securities are shown as a reduction in net loss attributable to common shareholders in our computation of EPS.

A summary of our non-vested common share awards at March 31, 2014 is as follows:

	Non-vested Common Shares			Weighted Average Grant Date Fair Value
Non-vested at December 31, 2013		637,662		$	13.33
Granted		103,075			12.90
Vested		(86,031	)		14.43
Expired		(29,514	)		10.21
Non-vested at March 31, 2014		625,192			13.26

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We value our non-vested time-based share awards at the grant date fair value, which is the market price of our common shares. As of March 31, 2014, we had $5.4 million of unrecognized compensation cost related to non-vested common shares. We anticipate this cost will be recognized over a weighted-average period of 2.7 years.

(14) Segment Information

Our reportable segments consist of four distinct reporting and operational segments within the greater Washington D.C, region in which we operate: Washington, D.C., Maryland, Northern Virginia and Southern Virginia. We evaluate the performance of our segments based on the operating results of the properties located within each segment, which excludes large non-recurring gains and losses, gains or losses from sale of real estate assets, interest expense, general and administrative costs, acquisition costs or any other indirect corporate expense to the segments. In addition, the segments do not have significant non-cash items other than straight-line and deferred market rent amortization reported in their operating results. There are no inter-segment sales or transfers recorded between segments.

The results of operations of our four reporting segments for the three months ended March 31, 2014 and 2013 are as follows (dollars in thousands):

	Three Months Ended March 31, 2014
	Washington, D.C.			Maryland			Northern Virginia			Southern Virginia			Consolidated
Number of buildings		4	(1)		44			51			38			137
Square feet		522,560	(1)		2,274,813			3,086,550			2,851,465			8,735,388
Total revenues	$	7,140		$	11,445		$	13,666		$	9,163		$	41,414
Property operating expense		(2,187	)		(3,746	)		(3,976	)		(2,989	)		(12,898	)
Real estate taxes and insurance		(1,054	)		(1,004	)		(1,524	)		(687	)		(4,269	)
Total property operating income	$	3,899		$	6,695		$	8,166		$	5,487			24,247
Depreciation and amortization expense														(15,104	)
General and administrative														(5,196	)
Acquisition costs														(68	)
Other expenses, net														(4,280	)
Loss from discontinued operations														(1,042	)
Net loss													$	(1,443	)
Total assets(3)(4)	$	343,804		$	393,919		$	421,556		$	230,384		$	1,481,336
Capital expenditures(5)	$	6,481		$	2,390		$	822		$	1,423		$	11,393
	Three Months Ended March 31, 2013
	Washington, D.C.			Maryland			Northern Virginia			Southern Virginia			Consolidated
Number of buildings		4	(2)		62			56			57			179
Square feet		531,714	(2)		3,779,047			3,653,645			5,484,597			13,449,003
Total revenues	$	7,616		$	10,216		$	12,717		$	8,609		$	39,158
Property operating expense		(1,893	)		(2,489	)		(3,242	)		(2,687	)		(10,311	)
Real estate taxes and insurance		(1,349	)		(808	)		(1,690	)		(664	)		(4,511	)
Total property operating income	$	4,374		$	6,919		$	7,785		$	5,258			24,336
Depreciation and amortization expense														(13,987	)
General and administrative														(5,267	)
Other expenses, net														(8,400	)
Income from discontinued operations														5,281
Net income													$	1,963
Total assets(3)(4)	$	324,064		$	487,545		$	460,996		$	362,239		$	1,718,364
Capital expenditures(5)	$	5,969		$	2,823		$	3,617		$	2,963		$	15,770

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⁽¹⁾ Includes occupied space at 440 First Street, NW and excludes Storey Park, which was placed in development in the third quarter of 2013.

⁽²⁾ Excludes 440 First Street, NW, which has been in redevelopment since its acquisition in 2010.

⁽³⁾  Total assets include our investment in properties that are owned through joint ventures that are not consolidated within our condensed consolidated financial statements. For more information on our unconsolidated investments, including location within our reportable segments, see footnote 6, Investment in Affiliates.

⁽⁴⁾  Corporate assets not allocated to any of our reportable segments totaled $91,673 and $83,520 at March 31, 2014 and 2013, respectively.

⁽⁵⁾ Capital expenditures for corporate assets not allocated to any of our reportable segments totaled $277 and $398 at March 31, 2014 and 2013, respectively.

(15) Subsequent Event

On April 8, 2014, we acquired 1401 K Street, NW, a twelve-story, 117,000 square foot office building in Washington, D.C. for $58.0 million. The property is currently 88% leased to 22 tenants. The acquisition was funded with the assumption of a $37.3 million mortgage loan, a $20.0 million draw under our unsecured revolving credit facility and available cash.

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ITEM 2: MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

The following discussion and analysis of the Company’s financial condition and results of operations should be read in conjunction with the condensed consolidated financial statements and notes thereto appearing elsewhere in this Quarterly Report on Form 10-Q. The discussion and analysis is derived from the consolidated operating results and activities of First Potomac Realty Trust. This discussion may contain forward-looking statements based upon current expectations that involve risks and uncertainties. The Company’s actual results may differ materially from those anticipated in these forward-looking statements as a result of various factors, including those set forth under “Risk Factors” in the Company’s Annual Report on Form 10-K for the year ended December 31, 2013 and included elsewhere in this Quarterly Report on Form 10-Q. See “Special Note About Forward-Looking Statements” above.

References in this Quarterly Report on Form 10-Q to “we,” “our,” “us,” the “Company” or “First Potomac,” refer to First Potomac Realty Trust and its subsidiaries, on a consolidated basis, unless the context indicates otherwise.

Overview

We are a leader in the ownership, management, development and redevelopment of office and business park properties in the greater Washington, D.C. region. We separate our properties into four distinct reporting segments, which we refer to as the Washington, D.C., Maryland, Northern Virginia and Southern Virginia reporting segments. We strategically focus on acquiring and redeveloping properties that we believe can benefit from our intensive property management, leasing expertise, market knowledge and established relationships, and seek to reposition these properties to increase their profitability and value. Our portfolio primarily contains a mix of single-tenant and multi-tenant office properties and business parks. Office properties are single-story and multi-story buildings that are primarily for office use; and business parks contain buildings with office features combined with some industrial property space.

We conduct our business through First Potomac Realty Investment Limited Partnership, our operating partnership (the “Operating Partnership”). We are the sole general partner of, and, as of March 31, 2014, owned 100% of the preferred interest and 95.7% of the common interest in the Operating Partnership. The remaining common interests in the Operating Partnership, which are presented as noncontrolling interests in the Operating Partnership in the accompanying unaudited condensed consolidated financial statements, are limited partnership interests, some of which are owned by two of our executive officers who contributed properties and other assets to us upon our formation, and the remainder of which are owned by other unrelated parties.

At March 31, 2014, we wholly-owned or had a controlling interest in properties totaling 8.7 million square feet and had a noncontrolling ownership interest in properties totaling an additional 0.9 million square feet through five unconsolidated joint ventures. We also owned land that can support approximately 1.5 million square feet of additional development. Our consolidated properties were 86.0% occupied by 541 tenants at March 31, 2014. We did not include square footage that was in development or redevelopment in our occupancy calculation, which totaled 0.1 million square feet at March 31, 2014. We derive substantially all of our revenue from leases of space within our properties. We operate so as to qualify as a real estate investment trust (“REIT”) for federal income tax purposes.

The primary source of our revenue is rent received from tenants under long-term (generally three to ten years) operating leases at our properties, including reimbursements from tenants for certain operating costs. Additionally, we may generate earnings from the sale of assets to third parties or contributed into joint ventures.

Our long-term growth will principally be driven by our ability to:

• maintain and increase occupancy rates and/or increase rental rates at our properties;

• continue to grow our portfolio through acquisitions of new properties, potentially through joint ventures;

• sell non-core assets to third parties, or contribute properties to joint ventures, at favorable prices;

• develop and redevelop existing assets; and

• execute initiatives designed to increase balance sheet capacity and expand the potential sources of capital.

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Executive Summary

For the three months ended March 31, 2014, we incurred a net loss of $1.4 million compared with net income of $2.0 million during the three months ended March 31, 2013.

Our funds from operations (“FFO”) available to common shareholders decreased for the three months ended March 31, 2014 compared with the same period in 2013 due to a reduction in net operating income as a result of the sale of the majority of our industrial properties in June 2013, the operations of which are presented in discontinued operations. The reduction in net operating income from the industrial portfolio sale was partially offset by improvements in net operating income on a same-property basis, as well as, a reduction in interest expense as we reduced our outstanding debt by approximately $284 million and decreased the weighted average interest rate on our total outstanding debt by 35 basis points since March 31, 2013.

FFO is a non-GAAP financial measure. For a description of FFO, including why we believe our presentation is useful and a reconciliation of FFO to net (loss) income attributable to First Potomac Realty Trust, see “Funds From Operations.”

Significant Activity

• Executed 257,000 square feet of leases, including 145,000 square feet of new leases, in the first quarter of 2014;

• Increased leased percentage to 88.9% from 86.3% at March 31, 2013, and increased occupied percentage to 86.0% from 83.9% at March 31, 2013;

• In the first quarter of 2014, signed an 82,000 square foot lease with the GSA at Atlantic Corporate Park, a 220,000 square foot office property, bringing the property to 81.3% leased;

• In January 2014, we sold a nine-building portfolio totaling 342,000 square feet for net proceeds of $31.6 million, and in April 2014, we sold West Park, a 29,000 square-foot office building and Patrick Center, a 66,000 square-foot office building for aggregate net proceeds of $13.8 million; and

• In April 2014, we acquired 1401 K Street, NW, a twelve-story, 117,000 square foot office building located in downtown Washington, D.C., for $58.0 million, which was partially funded with the assumption of an existing mortgage loan totaling $37.3 million.

Informal SEC Inquiry

As previously disclosed in our Annual Reports on Form 10-K for the years ended December 31, 2013 and 2012, we were informed that the SEC initiated an informal inquiry relating to the matters that were the subject of the Audit Committee’s internal investigation regarding the material weakness previously identified in our Annual Report on Form 10-K for the year ended December 31, 2011. The SEC staff has informed us that this inquiry should not be construed as an indication by the SEC or its staff that any violations of law have occurred, nor considered a reflection upon any person, entity or security. We have been, and intend to continue, voluntarily cooperating fully with the SEC. The scope and outcome of this matter cannot be determined at this time.

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Properties:

The following sets forth certain information about our properties by segment as of March 31, 2014 (including properties in development and redevelopment, dollars in thousands):

WASHINGTON, D.C. REGION

Property	Buildings		Sub-Market(1)	Square Feet		Annualized Cash Basis Rent(2)		Leased at March 31, 2014(3)			Occupied at March 31, 2014(3)
Office
440 First Street, NW(4)		1	Capitol Hill		19,763	$	573		100.0	%		100.0	%
500 First Street, NW		1	Capitol Hill		129,035		5,180		100.0	%		100.0	%
840 First Street, NE		1	NoMA		248,536		6,695		97.7	%		88.8	%
1211 Connecticut Avenue, NW		1	CBD		125,226		3,625		97.5	%		96.9	%
Total/Weighted Average		4			522,560		16,073		98.3	%		93.9	%
Development and Redevelopment
440 First Street, NW(4)		—	Capitol Hill		119,510		—
Storey Park(5)		—	NoMA		—		—
Total Development and Redevelopment		—			119,510		—
Unconsolidated Joint Venture
1750 H Street, NW		1	CBD		113,235		3,399		86.1	%		74.0	%
Region Total/Weighted Average		5			755,305	$	19,472		96.2	%		90.4	%

⁽¹⁾ CBD refers to Central Business District; NoMA refers to North of Massachusetts Avenue.

⁽²⁾  Annualized cash basis rent, which is calculated as the contractual rent due under the terms of the leases, without taking into account rent abatements, is reflected on a triple-net equivalent basis, by deducting operating expense reimbursements that are included, along with base rent, in the contractual payments of our full-service leases. The operating expense reimbursements primarily relate to real estate taxes and insurance expenses.

⁽³⁾ Does not include space in development or redevelopment.

⁽⁴⁾ In October 2013, we substantially completed the redevelopment of the property. At March 31, 2014, we had placed in-service 19,763 square feet of the redeveloped space. The property has 119,510 square feet remaining in redevelopment, which will be placed in-service at the earlier of a tenant taking occupancy or October 2014.

⁽⁵⁾  The property was acquired through a consolidated joint venture in which we have a 97% controlling economic interest. The property was placed into development on September 1, 2013. The joint venture anticipates developing a mixed-used project on the 1.6 acre site, which can accommodate up to 712,000 square feet of office space.

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MARYLAND REGION

Property	Buildings		Location	Square Feet		Annualized Cash Basis Rent(1)		Leased at March 31, 2014			Occupied at March 31, 2014
Business Park
Ammendale Business Park(2)		7	Beltsville		312,846	$	4,108		100.0	%		100.0	%
Gateway 270 West		6	Clarksburg		255,865		2,964		83.4	%		70.9	%
Owings Mills Business Park(3)		4	Owings Mills		180,475		1,299		58.6	%		58.6	%
Rumsey Center		4	Columbia		134,689		1,261		83.4	%		80.9	%
Snowden Center		5	Columbia		145,267		2,212		100.0	%		100.0	%
Total Business Park		26			1,029,142		11,844		86.4	%		83.0	%
Office
Annapolis Business Center		2	Annapolis		102,374		1,747		98.8	%		98.8	%
Metro Park North		4	Rockville		191,211		2,733		87.3	%		70.8	%
Cloverleaf Center		4	Germantown		173,766		2,041		73.0	%		62.9	%
Hillside I and II(4)		2	Columbia		63,709		923		95.5	%		95.5	%
TenThreeTwenty		1	Columbia		136,847		1,696		80.0	%		71.8	%
Patrick Center(5)		1	Frederick		66,269		1,058		77.1	%		77.1	%
West Park(5)		1	Frederick		28,333		281		85.1	%		85.1	%
Redland Corporate Center(6)		3	Rockville		483,162		11,201		100.0	%		100.0	%
Total Office		18			1,245,671		21,680		90.2	%		85.3	%
Total Consolidated		44			2,274,813		33,524		88.5	%		84.3	%
Unconsolidated Joint Ventures
Aviation Business Park		3	Glen Burnie		120,285		1,231		69.8	%		45.9	%
RiversPark I and II		6	Columbia		307,984		4,143		94.7	%		90.9	%
Total Joint Ventures		9			428,269		5,374		87.7	%		78.3	%
Region Total/Weighted Average		53			2,703,082	$	38,898		88.4	%		83.3	%

⁽¹⁾ Annualized cash basis rent, which is calculated as the contractual rent due under the terms of the lease, without taking into account rent abatements, is reflected on a triple-net equivalent basis, by deducting operating expense reimbursements that are included, along with base rent, in the contractual payments of our full-service leases. The operating expense reimbursements primarily relate to real estate taxes and insurance expenses.

⁽²⁾ Ammendale Business Park consists of the following properties: Ammendale Commerce Center and Indian Creek Court.

⁽³⁾ Owings Mills Business Park consists of the following properties: Owings Mills Business Center and Owings Mills Commerce Center.

⁽⁴⁾ Excludes 21,922 square feet of space that was placed into redevelopment during the first quarter of 2014.

⁽⁵⁾  The properties were classified as held-for-sale at March 31, 2014 and were subsequently sold in April 2014 for aggregate net proceeds of $13.8 million.

⁽⁶⁾  Includes 540 Gaither Road, which was acquired on October 1, 2013.

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NORTHERN VIRGINIA REGION

Property	Buildings		Location	Square Feet		Annualized Cash Basis Rent(1)		Leased at March 31, 2014			Occupied at March 31, 2014
Business Park
Corporate Campus at Ashburn Center		3	Ashburn		194,184	$	3,080		100.0	%		100.0	%
Gateway Centre Manassas		3	Manassas		102,332		702		67.0	%		67.0	%
Linden Business Center		3	Manassas		109,787		1,053		97.4	%		97.4	%
Prosperity Business Center		1	Merrifield		71,373		729		84.9	%		84.9	%
Sterling Park Business Center(2)		7	Sterling		474,805		4,326		92.6	%		92.0	%
Total Business Park		17			952,481		9,890		91.3	%		91.1	%
Office
Atlantic Corporate Park		2	Sterling		219,374		3,264		81.3	%		37.8	%
Cedar Hill		2	Tysons Corner		102,632		2,197		100.0	%		100.0	%
Herndon Corporate Center		4	Herndon		128,084		1,588		86.4	%		86.4	%
Enterprise Center		4	Chantilly		187,988		2,924		85.3	%		84.7	%
One Fair Oaks		1	Fairfax		214,214		5,284		100.0	%		100.0	%
Reston Business Campus		4	Reston		82,372		796		64.6	%		53.7	%
Three Flint Hill		1	Oakton		180,819		3,101		94.6	%		92.1	%
Van Buren Office Park		5	Herndon		107,409		976		75.7	%		75.7	%
Windsor at Battlefield		2	Manassas		155,511		2,023		92.0	%		85.5	%
Total Office		25			1,378,403		22,153		88.1	%		79.4	%
Industrial
Newington Business Park Center		7	Lorton		254,728		2,245		80.3	%		80.3	%
Plaza 500		2	Alexandria		500,938		5,122		96.6	%		96.6	%
Total Industrial		9			755,666		7,367		91.1	%		91.1	%
Total Consolidated		51			3,086,550		39,410		89.8	%		85.9	%
Unconsolidated Joint Venture
Prosperity Metro Plaza		2	Merrifield		326,414		6,874		93.0	%		84.2	%
Region Total/Weighted Average		53			3,412,964	$	46,284		90.1	%		85.7	%

⁽¹⁾  Annualized cash basis rent, which is calculated as the contractual rent due under the terms of the leases, without taking into account rent abatements, is reflected on a triple-net equivalent basis, by deducting operating expense reimbursements that are included, along with base rent, in the contractual payments of our full-service leases. The operating expense reimbursements primarily relate to real estate taxes and insurance expenses.

⁽²⁾  Sterling Park Business Center consists of the following properties: 403/405 Glenn Drive, Davis Drive and Sterling Park Business Center.

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SOUTHERN VIRGINIA REGION

Property	Buildings		Location	Square Feet		Annualized Cash Basis Rent(1)		Leased at March 31, 2014			Occupied at March 31, 2014
RICHMOND
Business Park
Chesterfield Business Center(2)		11	Richmond		320,131	$	1,705		75.7	%		75.7	%
Hanover Business Center		4	Ashland		184,032		763		64.1	%		62.4	%
Park Central		3	Richmond		204,696		2,061		90.1	%		90.1	%
Virginia Technology Center		1	Glen Allen		118,971		1,329		85.3	%		85.3	%
Total Richmond		19			827,830		5,858		78.0	%		77.7	%
NORFOLK
Business Park
Battlefield Corporate Center		1	Chesapeake		96,720		811		100.0	%		100.0	%
Crossways Commerce Center(3)		9	Chesapeake		1,082,750		11,433		95.9	%		95.9	%
Greenbrier Business Park(4)		4	Chesapeake		410,604		3,818		73.8	%		72.2	%
Norfolk Commerce Park(5)		3	Norfolk		261,987		2,482		89.7	%		89.7	%
Total Business Park		17			1,852,061		18,544		90.4	%		90.0	%
Office
Greenbrier Towers		2	Chesapeake		171,574		1,715		83.5	%		82.3	%
Total Norfolk		19			2,023,635		20,259		89.8	%		89.4	%
Region Total/Weighted Average		38			2,851,465	$	26,117		86.4	%		86.0	%

⁽¹⁾  Annualized cash basis rent, which is calculated as the contractual rent due under the terms of the leases, without taking into account rent abatements, is reflected on a triple-net equivalent basis, by deducting operating expense reimbursements that are included, along with base rent, in the contractual payments of our full-service leases. The operating expense reimbursements primarily relate to real estate taxes and insurance expenses.

⁽²⁾  Chesterfield Business Center consists of the following properties: Airpark Business Center, Chesterfield Business Center and Pine Glen.

⁽³⁾ Crossways Commerce Center consists of the following properties: Coast Guard Building, Crossways Commerce Center I, Crossways Commerce Center II, Crossways Commerce Center IV and 1434 Crossways Boulevard.

⁽⁴⁾  Greenbrier Business Park consists of the following properties: Greenbrier Technology Center I, Greenbrier Technology Center II and Greenbrier Circle Corporate Center.

⁽⁵⁾  Norfolk Commerce Park consists of the following properties: Norfolk Business Center, Norfolk Commerce Park II and Gateway II.

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Development and Redevelopment Activity

We construct office buildings and/or business parks on a build-to-suit basis or with the intent to lease upon completion of construction. We own developable land that can accommodate 1.5 million square feet of additional building space, of which, 0.7 million is located in the Washington, D.C. reporting segment, 0.1 million in the Maryland reporting segment, 0.6 million in the Northern Virginia reporting segment and 0.1 million in the Southern Virginia reporting segment.

On August 4, 2011, we formed a joint venture, in which we have a 97% interest, with an affiliate of Perseus Realty, LLC to acquire Storey Park in our Washington, D.C. reporting segment. At the time, the site was leased to Greyhound Lines, Inc. (“Greyhound”), which subsequently relocated its operations. Greyhound’s lease expired on August 31, 2013, at which time the property was placed into development. The joint venture anticipates developing a mixed-use project on the 1.6 acre site, which can accommodate up to 712,000 square feet of office space. At March 31, 2014, the total investment in the development project was $51.2 million, which included the original cost basis of the property of $43.3 million.

On December 28, 2010, we acquired 440 First Street, NW, a vacant eight-story office building in our Washington, D.C. reporting segment. In October 2013, we substantially completed the redevelopment of the 139,000 square foot property. During 2013, we placed in-service 19,763 square feet of office space at the property. At March 31, 2014, our total investment in the redevelopment project was $54.3 million, which included the original cost basis of the property of $23.6 million.

We will place completed construction activities in service upon the earlier of a tenant taking occupancy or twelve months from substantial completion. At March 31, 2014, we had 119,510 square feet of redevelopment efforts at 440 First Street, NW that have yet to be placed-in service. At March 31, 2014, we had no completed development efforts that have yet to be placed in service. We did not place any development or redevelopment efforts into service during the first quarter of 2014.

Lease Expirations

Approximately 6.3% of our annualized cash basis rent, excluding month-to-month leases (which represent 0.1% of our annualized cash basis rent), is scheduled to expire during the remainder of 2014. Current tenants are not obligated to renew their leases upon the expiration of their terms. If non-renewals or terminations occur, we may not be able to locate qualified replacement tenants and, as a result, could lose a significant source of revenue while remaining responsible for the payment of our financial obligations. Moreover, the terms of a renewal or new lease, including the amount of rent, may be less favorable to us than the current lease terms, or we may be forced to provide tenant improvements at our expense or provide other concessions or additional services to maintain or attract tenants. We continually strive to increase our portfolio occupancy, and the amount of vacant space in our portfolio at any given time may impact our willingness to reduce rental rates or provide greater concessions to retain existing tenants and attract new tenants. We continually monitor our portfolio on a regional and per property basis to assess market trends, including vacancy, comparable deals and transactions, and other business and economic factors that may influence our leasing decisions.

During the first quarter of 2014, we delivered positive net absorption of approximately 28,000 square feet, and had a tenant retention rate of 53%. After reflecting all the renewal leases on a triple-net equivalent basis to allow for comparability, the weighted average rental rate of our renewed leases for the three months ended March 31, 2014 increased 3.5% compared with the expiring leases. During the first quarter of 2014, we executed new leases for 145,000 square feet, of which less than half contained rent escalations, which was due to an 82,000 square foot lease with the U.S. Government at Atlantic Corporate Park.

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The following table sets forth a summary schedule of the lease expirations at our consolidated properties for leases in place as of March 31, 2014 (dollars in thousands, except per square foot data):

Year of Lease Expiration(1)	Number of Leases Expiring		Leased Square Feet		% of Leased Square Feet			Annualized Cash Basis Rent(2)		% of Annualized Cash Basis Rent			Average Base Rent per Square Foot(2)(3)
MTM		3		8,508		0.1	%	$	43		0.0	%	$	4.98
2014		82		553,376		7.1	%		7,202		6.3	%		13.02
2015		107		628,090		8.1	%		8,404		7.3	%		13.38
2016		102		741,668		9.6	%		12,789		11.1	%		17.24
2017		94		1,168,295		15.0	%		17,732		15.4	%		15.18
2018		80		1,010,097		13.0	%		12,982		11.3	%		12.85
2019		85		945,855		12.2	%		12,424		10.8	%		13.14
2020		48		878,228		11.3	%		12,420		10.8	%		14.14
2021		24		306,695		4.0	%		3,956		3.4	%		12.90
2022		21		244,694		3.2	%		3,499		3.0	%		14.30
2023		14		553,935		7.1	%		11,335		9.8	%		20.46
Thereafter		35		723,624		9.3	%		12,338		10.8	%		17.05
Total / Weighted Average		695		7,763,065		100.0	%	$	115,124		100.0	%	$	14.83

⁽¹⁾  We classify leases that expired or were terminated on the last day of the quarter as leased square footage since the tenant is contractually entitled to the space.

⁽²⁾  Annualized Cash Basis Rent, which is calculated as the contractual rent due under the terms of the leases, without taking into account rent abatements, is reflected on a triple-net equivalent basis, by deducting operating expense reimbursements that are included, along with base rent, in the contractual payments of our full-service leases. The operating expense reimbursements primarily relate to real estate taxes and insurance expenses.

⁽³⁾  Represents Annualized Cash Basis Rent at March 31, 2014, divided by the square footage of the expiring leases.

Critical Accounting Policies and Estimates

Our consolidated financial statements are prepared in accordance with U.S. generally accepted accounting principles (“GAAP”) that require us to make certain estimates and assumptions. Critical accounting policies and estimates are those that require subjective or complex judgments and are the policies and estimates that we deem most important to the portrayal of our financial condition, results of operations and cash flows. It is possible that the use of different reasonable estimates or assumptions in making these judgments could result in materially different amounts being reported in our consolidated financial statements. Our critical accounting policies and estimates relate to revenue recognition, including evaluation of the collectability of accounts and notes receivable, impairment of long-lived assets, purchase accounting for acquisitions of real estate, derivative instruments and share-based compensation.

The following is a summary of certain aspects of these critical accounting policies and estimates.

Revenue Recognition

We generate substantially all of our revenue from leases on our properties. We recognize rental revenue on a straight-line basis over the term of our leases, which includes fixed-rate renewal periods leased at below market rates at acquisition or inception. Accrued straight-line rents represent the difference between rental revenue recognized on a straight-line basis over the term of the respective lease agreements and the rental payments contractually due for leases that contain abatement or fixed periodic increases. We consider current information, credit quality, historical trends, economic conditions and other events regarding the tenants’ ability to pay their obligations in determining if amounts due from tenants, including accrued straight-line rents, are ultimately collectible. The uncollectible portion of the amounts due from tenants, including accrued straight-line rents, is charged to property operating expense in the period in which the determination is made.

Tenant leases generally contain provisions under which the tenants reimburse us for a portion of property operating expenses and real estate taxes we incur. Such reimbursements are recognized in the period in which the expenses are incurred. We record a provision for losses on estimated uncollectible accounts receivable based on our analysis of risk of loss on specific accounts. Lease termination fees are recognized on the date of termination when the related lease or portion thereof is cancelled, the collectability of the fee is reasonably assured and we have possession of the terminated space.

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Accounts and Notes Receivable

We must make estimates of the collectability of our accounts and notes receivable related to minimum rent, deferred rent, tenant reimbursements, lease termination fees and interest and other income. We specifically analyze accounts receivable and historical bad debt experience, tenant concentrations, tenant creditworthiness and current economic trends when evaluating the adequacy of our allowance for doubtful accounts receivable. These estimates have a direct impact on our net income as a higher required allowance for doubtful accounts receivable will result in lower net income. The uncollectible portion of the amounts due from tenants, including straight-line rents, is charged to property operating expense in the period in which the determination is made. We consider similar criteria in assessing impairment associated with outstanding loans or notes receivable and whether any allowance for anticipated credit loss is appropriate.

Investments in Real Estate and Real Estate Entities

Investments in real estate and real estate entities are initially recorded at fair value if acquired in a business combination or carried at initial cost when constructed or acquired in an asset purchase, less accumulated depreciation and, when appropriate, impairment losses. Improvements and replacements are capitalized at cost when they extend the useful life, increase capacity or improve the efficiency of the asset. Repairs and maintenance are charged to expense when incurred. Depreciation and amortization are recorded on a straight-line basis over the estimated useful lives of the assets. The estimated useful lives of our assets, by class, are as follows:

Buildings	39 years
Building improvements	5 to 20 years
Furniture, fixtures and equipment	5 to 15 years
Lease related intangible assets	The term of the related lease
Tenant improvements	Shorter of the useful life of the asset or the term of the related lease

We regularly review market conditions for possible impairment of a property’s carrying value. When circumstances such as adverse market conditions, changes in management’s intended holding period or potential sale to a third party indicate a possible impairment of the fair value of a property, an impairment analysis is performed. We assess potential impairments based on an estimate of the future undiscounted cash flows (excluding interest charges) expected to result from the property’s use and eventual disposition. This estimate is based on projections of future revenues, expenses, capital improvement costs to maintain the operating capacity, expected holding periods and capitalization rates. These cash flows consider factors such as expected market trends and leasing prospects, as well as the effects of leasing demand, competition and other factors. If impairment exists due to the inability to recover the carrying value of a real estate investment based on forecasted undiscounted cash flows, an impairment loss is recorded to the extent that the carrying value exceeds the estimated fair value of the property. We are required to make estimates as to whether there are impairments in the carrying values of our investments in real estate. Further, we will record an impairment loss if we expects to dispose of a property, in the near term, at a price below carrying value. In such an event, we will record an impairment loss based on the difference between a property’s carrying value and its projected sales price, less any estimated costs to sell.

We will classify a building as held-for-sale in accordance with GAAP in the period in which we make the decision to dispose of the building, our Board of Trustees or a designated delegate approves the sale, there is a high likelihood a binding agreement to purchase the property will be signed under which the buyer will be required to commit a significant amount of nonrefundable cash and no significant financing contingencies will exist that could cause the transaction not to be completed in a timely manner. If these criteria are met, we will cease depreciation of the asset. We will classify any impairment loss, together with the building’s operating results, as discontinued operations in our consolidated statements of operations for all periods presented and classify the assets and related liabilities as held-for-sale in our consolidated balance sheets in the period the held-for-sale criteria are met. Interest expense is reclassified to discontinued operations only to the extent the held-for-sale property is secured by specific mortgage debt and the mortgage debt will not be assigned to another property owned by us after the disposition. However, in April 2014, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update No. 2014-08, Reporting Discontinued Operations and Disclosures of Disposals of Components of an Entity (“ASU 2014-08”), which will impact the future presentation of operations and gain or losses from disposed properties. For more information, see footnote 2(f), Summary of Significant Accounting Policies – Application of New Accounting Standards to our condensed consolidated financial statements in Part 1, Item 1 of this quarterly report.

We recognize the fair value, if sufficient information exists to reasonably estimate the fair value, of any liability for conditional asset retirement obligations when incurred, which is generally upon acquisition, construction, development or redevelopment and/or through the normal operation of the asset.

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We capitalize interest costs incurred on qualifying expenditures for real estate assets under development or redevelopment, which include our investments in assets owned through unconsolidated joint ventures that are under development or redevelopment, while being readied for their intended use in accordance with accounting requirements regarding capitalization of interest. We will capitalize interest when qualifying expenditures for the asset have been made, activities necessary to get the asset ready for its intended use are in progress and interest costs are being incurred. Capitalized interest also includes interest associated with expenditures incurred to acquire developable land while development activities are in progress. We also capitalize direct compensation costs of our construction personnel who manage the development and redevelopment projects, but only to the extent the employee’s time can be allocated to a project. Any portion of construction management costs not directly attributable to a specific project are recognized as general and administrative expense in the period incurred. We do not capitalize any other general administrative costs such as office supplies, office rent expense or an overhead allocation to our development or redevelopment projects. Capitalized compensation costs were immaterial during the three months ended March 31, 2014 and 2013. Capitalization of interest will end when the asset is substantially complete and ready for its intended use, but no later than one year from completion of major construction activity, if the property is not occupied. We will also place redevelopment and development assets into service at this time and commence depreciation upon the substantial completion of tenant improvements and the recognition of revenue. Capitalized interest is depreciated over the useful life of the underlying assets, commencing when those assets are placed into service.

Purchase Accounting

Acquisitions of rental property, including any associated intangible assets, are measured at fair value at the date of acquisition. Any liabilities assumed or incurred are recorded at their fair value at the time of acquisition. The fair value of the acquired property is allocated between land and building (on an as-if vacant basis) based on management’s estimate of the fair value of those components for each type of property and to tenant improvements based on the depreciated replacement cost of the tenant improvements, which approximates their fair value. The fair value of the in-place leases is recorded as follows:

• the fair value of leases in-place on the date of acquisition is based on absorption costs for the estimated lease-up period in which vacancy and foregone revenue are avoided due to the presence of the acquired leases;

• the fair value of above and below-market in-place leases based on the present value (using a discount rate that reflects the risks associated with the acquired leases) of the difference between the contractual rent amounts to be paid under the assumed lease and the estimated market lease rates for the corresponding spaces over the remaining non-cancelable terms of the related leases, which range from one to fifteen years; and

• the fair value of intangible tenant or customer relationships.

Our determination of these fair values requires us to estimate market rents for each of the leases and make certain other assumptions. These estimates and assumptions affect the rental revenue, and depreciation and amortization expense recognized for these leases and associated intangible assets and liabilities.

Derivative Instruments

We are exposed to certain risks arising from business operations and economic factors. We use derivative financial instruments to manage exposures that arise from business activities in which our future exposure to interest rate fluctuations is unknown. The objective in the use of an interest rate derivative is to add stability to interest expenses and manage exposure to interest rate changes. We do not use derivatives for trading or speculative purposes and we intend to enter into derivative agreements only with counterparties that we believe have a strong credit rating to mitigate the risk of counterparty default or insolvency. No hedging activity can completely insulate us from the risks associated with changes in interest rates. Moreover, interest rate hedging could fail to protect us or adversely affect us because, among other things:

• available interest rate hedging may not correspond directly with the interest rate risk for which we seek protection;

• the duration of the hedge may not match the duration of the related liability;

• the party owing money in the hedging transaction may default on its obligation to pay; and

• the credit quality of the party owing money on the hedge may be downgraded to such an extent that it impairs our ability to sell or assign its side of the hedging transaction.

We may designate a derivative as either a hedge of the cash flows from a debt instrument or anticipated transaction (cash flow hedge) or a hedge of the fair value of a debt instrument (fair value hedge). All derivatives are recognized as assets or liabilities at fair value. For effective hedging relationships, the effective portion of the change in the fair value of the assets or liabilities is recorded within equity (cash flow hedge) or through earnings (fair value hedge). Ineffective portions of derivative transactions will result in changes in fair value recognized in earnings. For a cash flow hedge, we record our proportionate

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share of unrealized gains or losses on our derivative instruments associated with our unconsolidated joint ventures within equity and “Investment in affiliates.” We incorporate credit valuation adjustments to appropriately reflect both our own nonperformance risk and the respective counterparty’s nonperformance risk in the fair value measurements. In adjusting the fair value of our derivative contracts for the effect of nonperformance risk, we have considered the impact of netting any applicable credit enhancements, such as collateral postings, thresholds, mutual inputs and guarantees.

Share-Based Payments

We measure the cost of employee services received in exchange for an award of equity instruments based on the grant-date fair value of the award. For options awards, we use a Black-Scholes option-pricing model. Expected volatility is based on an assessment of our realized volatility over the preceding period that is equivalent to the award’s expected life. The expected term represents the period of time the options are anticipated to remain outstanding as well as our historical experience for groupings of employees that have similar behavior and considered separately for valuation purposes. For non-vested share awards that vest over a predetermined time period, we use the outstanding share price at the date of issuance to fair value the awards. For non-vested shares awards that vest based on performance conditions, we use a Monte Carlo simulation (risk-neutral approach) to determine the value and derived service period of each tranche. The expense associated with the share-based awards will be recognized over the period during which an employee is required to provide services in exchange for the award – the requisite service period (usually the vesting period). The fair value for all share-based payment transactions are recognized as a component of income or loss from continuing operations.

Results of Operations

Comparison of the Three Months Ended March 31, 2014 with the Three Months Ended March 31, 2013

For discussion of the operating results of our reporting segments, the terms “Washington, D.C.”, “Maryland”, “Northern Virginia” and “Southern Virginia” will be used to describe the respective reporting segments.

In the tables below, the designation “NM” is used to refer to a percentage that is not meaningful.

Total Revenues

Total revenues are summarized as follows:

	Three Months Ended March 31,						Percent
(dollars in thousands)	2014		2013		Change		Change
Rental	$	31,940	$	30,693	$	1,247		4	%
Tenant reimbursements and other	$	9,474	$	8,465	$	1,009		12	%

Rental Revenue

Rental revenue is comprised of contractual rent, the impact of straight-line revenue and the amortization of deferred market rent assets and liabilities representing above and below market rate leases at acquisition. Rental revenue increased $1.2 million for the three months ended March 31, 2014 compared with the same period in 2013, primarily due to an increase in occupancy. The occupancy of our consolidated portfolio was 86.0% at March 31, 2014 compared with 83.9% at March 31, 2013. The increase in rental revenue for the three months ended March 31, 2014 compared with same period in 2013 includes $0.7 million for Maryland, $0.4 million for Northern Virginia and $0.3 million for Southern Virginia. Rental revenue for Washington, D.C. decreased $0.2 million for the three months ended March 31, 2014 compared with 2013 due to a decline in rental revenue from Storey Park, as the property became vacant at the end of August 2013, at which time, the property was placed into development. Due to the timing of acquisitions and dispositions in 2014, which may or may not occur for the remainder of 2014, we cannot determine if rental revenue will increase during 2014 compared with 2013.

Tenant Reimbursements and Other Revenues

Tenant reimbursements and other revenues include operating and common area maintenance costs reimbursed by our tenants as well as other incidental revenues such as lease termination payments, parking revenue and joint venture and construction related management fees. Tenant reimbursements and other revenues increased $1.0 million for the three months ended March 31, 2014 compared with the same period in 2013 due to an increase in recoverable snow and ice removal costs. The increase in tenant reimbursements and other revenues for the three months ended March 31, 2014 compared with the same

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period in 2013 includes $0.5 million for Maryland, $0.5 million for Northern Virginia and $0.3 million for Southern Virginia. Tenant reimbursements and other revenues for Washington, D.C. decreased $0.3 million for the three months ended March 31, 2014 compared with 2013 as a tenant at Storey Park vacated in August 2013 and the property was subsequently placed into development. We anticipate tenant reimbursement and other revenues will increase in 2014 compared with 2013 due to an increase in recoverable snow and ice removal costs during the first quarter of 2014.

Total Expenses

Property Operating Expenses

Property operating expenses are summarized as follows:

	Three Months Ended March 31,							Percent
(dollars in thousands)	2014		2013		Change			Change
Property operating	$	12,898	$	10,311	$	2,587			25	%
Real estate taxes and insurance	$	4,269	$	4,511	$	(242	)		(5	)%

Property operating expenses increased $2.6 million for the three months ended March 31, 2014 compared with the same period in 2013 due to a $1.6 million increase in snow and ice removal costs and an increase in utility costs related to the colder temperatures. The increase in property operating expenses for the three months ended March 31, 2014 compared with the same period in 2013 includes $0.3 million for Washington, D.C., $1.3 million for Maryland, $0.7 million for Northern Virginia and $0.3 million for Southern Virginia. We anticipate property operating expenses will increase in 2014 compared with 2013 due to an increase in snow and ice removal costs during the first quarter of 2014.

Real estate taxes and insurance expense decreased $0.2 million for the three months ended March 31, 2014 compared with the same period in 2013, primarily due to Storey Park being placed into development, at which point taxes and insurance began to be capitalized. The decrease in real estate taxes and insurance expense for the three months ended March 31, 2014 compared with the same period in 2013 includes a $0.3 million reduction for Washington, D.C. and a $0.1 million reduction for Northern Virginia. Property operating expenses for Maryland increased $0.2 million and remained relatively flat in Southern Virginia for the three months ended March 31, 2014 compared with the same period in 2013. Due to the timing of acquisitions and dispositions in 2014, which may or may not occur for the remainder of 2014, we cannot determine if real estate taxes and insurance expense will increase during 2014 compared with 2013.

Other Operating Expenses

General and administrative expenses are summarized as follows:

	Three Months Ended March 31,							Percent
(dollars in thousands)	2014		2013		Change			Change
	$	5,196	$	5,267	$	(71	)		(1	)%

General and administrative expenses decreased $0.1 million during the three months ended March 31, 2014 compared with the same period in 2013 due to a decrease in legal fees as we incurred $0.3 million of legal fees associated with an informal SEC inquiry during the first quarter of 2013. We currently anticipate that general and administrative expenses will continue to decrease in 2014 compared with 2013 as we expect an overall decline in legal fees in 2014 compared with 2013 and do not expect to incur any personnel separation costs in 2014. However, the informal inquiry initiated by the SEC could result in increased legal and/or accounting fees in 2014.

Acquisition costs are summarized as follows:

	Three Months Ended March 31,						Percent
(dollars in thousands)	2014		2013		Change		Change
	$	68	$	—	$	68		NM

We did not acquire any properties during the first quarter of 2014 or 2013. However, on April 8, 2014, we acquired 1401 K Street, NW, a twelve-story, 117,000 square foot office building in Washington D.C. for $58.0 million, which caused an increase in acquisition costs for the three months ended March 31, 2014 compared with 2013. We anticipate additional acquisition costs associated with the acquisition of 1401 K Street, NW to be recorded in the second quarter of 2014.

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Depreciation and amortization expense is summarized as follows:

	Three Months Ended March 31,						Percent
(dollars in thousands)	2014		2013		Change		Change
	$	15,104	$	13,987	$	1,117		8	%

Depreciation and amortization expense includes depreciation of real estate assets and amortization of intangible assets and leasing commissions. Depreciation and amortization expense increased $1.1 million for the three months ended March 31, 2014 compared with the same period in 2013, primarily due to additional leasing and tenant improvements costs related to the increase in occupancy in our portfolio. Depreciation expense also increased for the three months ended March 31, 2014 compared with the same period in 2013 due to the acquisition of an additional building at Redland Corporate Center in October 2013. Due to the timing of acquisitions and dispositions in 2014, which may or may not occur for the remainder of 2014, we cannot determine if depreciation expense will increase during 2014 compared with 2013.

Other Expenses, net

Interest expense is summarized as follows:

	Three Months Ended March 31,							Percent
(dollars in thousands)	2014		2013		Change			Change
	$	5,812	$	9,958	$	(4,146	)		(42	)%

We have made significant progress executing our updated strategic and capital plan, which resulted in an improvement in our balance sheet metrics through a reduction in outstanding debt. At March 31, 2014, we had $671.1 million of debt outstanding with a weighted average interest rate of 3.8% compared with $954.9 million of debt outstanding with a weighted average interest rate of 4.2% at March 31, 2013.

Interest expense decreased $4.1 million for the three months ended March 31, 2014 compared with the same period in 2013, primarily due to reducing our outstanding debt by $283.8 million and decreasing the weighted average interest rate on our total outstanding debt by 35 basis points from March 31, 2013. During 2013, we repaid outstanding debt with proceeds from both the sale of our industrial portfolio and the issuance of 7.5 million common shares in May 2013. We amended and restated our unsecured revolving credit facility and unsecured term loan in October 2013, which reduced our LIBOR spreads to current market rates. For the three months ended March 31, 2014, our weighted average borrowings under the unsecured revolving credit facility were $97.1 million with a weighted average interest rate of 1.7% compared with weighted average borrowings of $221.9 million with a weighted average interest rate of 2.9%, respectively, for the three months ended March 31, 2013.

We anticipate that interest expense will continue to decline in 2014 compared with 2013 as a result of reducing both our overall debt balance and the applicable interest rates associated with our unsecured revolving credit facility and our unsecured term loan.

Interest and other income are summarized as follows:

	Three Months Ended March 31,						Percent
(dollars in thousands)	2014		2013		Change		Change
	$	1,759	$	1,530	$	229		15	%

In December 2010, we provided a $25.0 million mezzanine loan to the owners of 950 F Street, NW, a ten-story, 287,000 square-foot office/retail building located in Washington, D.C., which is secured by a portion of the owners’ interest in the property. On January 10, 2014, we amended and restated the loan to increase the outstanding balance to $34.0 million, and reduced the fixed interest rate from 12.5% to 9.75%. As part of amending the loan, we wrote-off $0.1 million of unamortized

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financing fees related to the origination of the mezzanine loan, which increased interest and other income for the three months ended March 31, 2014 compared with the same period in 2013. In April 2011, we provided a $30.0 million mezzanine loan to the owners of America’s Square, a 461,000 square foot office complex in Washington, D.C., which has a fixed interest rate of 9.0%. In May 2013, the loan began requiring monthly principal payments, which will reduce the outstanding balance of the loan. We recorded interest income related to these loans of $1.5 million during both the three months ended March 31, 2014 and 2013.

In January 2013, we subleased 5,000 square feet of our corporate headquarters, and subleased an additional 2,700 square feet of our corporate headquarters at the end of the first quarter of 2014. For the three months ended March 31, 2014 and 2013, we recognized $64 thousand and $42 thousand, respectively, of income associated with these subleases, which is reflected within “Interest and other income” in our consolidated statements of operations.

We anticipate interest and other income will continue to increase in 2014 compared with 2013 due to a full-year impact of the higher outstanding balance on the 950 F Street, NW mezzanine loan and the subleasing of additional corporate office space in 2014.

Equity in losses (earnings) of affiliates is summarized as follows:

	Three Months Ended March 31,							Percent
(dollars in thousands)	2014		2013			Change		Change
	$	227	$	(28	)	$	255		NM

Equity in losses (earnings) of affiliates reflects our aggregate ownership interest in the operating results of the properties in which we do not have a controlling interest. Our unconsolidated joint ventures incurred an aggregate loss for the three months ended March 31, 2014 compared to aggregate earnings for the three months ended March 31, 2013 due to a tenant vacating at one of the properties owned by an unconsolidated joint venture.

(Loss) Income from Discontinued Operations

(Loss) income from discontinued operations is summarized as follows:

	Three Months Ended March 31,								Percent
(dollars in thousands)	2014			2013		Change			Change
	$	(1,042	)	$	5,281	$	(6,323	)		NM

Discontinued operations reflect the operating results and the gain on sale of our disposed properties and any properties that were classified as held-for-sale at March 31, 2014. During the first quarter of 2014, we sold a portfolio of properties that consisted of Girard Business Center and Gateway Center, which are both located in our Maryland reporting segment, for aggregate net proceeds of $31.6 million. We recorded a gain on the sale of the portfolio of $0.1 million for the three months ended March 31, 2014. We did not record any gains on the sale of real estate property during the three months ended March 31, 2013. We classified our Patrick Center and West Park properties as held-for-sale at March 31, 2014 and both properties were subsequently sold in April 2014 for aggregate net proceeds of $13.8 million. We have had, and will have, no continuing involvement with these properties subsequent to their disposal. For more information about our discontinued operations, see note 7 – Discontinued Operations.

Net loss attributable to noncontrolling interests

Net loss attributable to noncontrolling interests is summarized as follows:

	Three Months Ended March 31,						Percent
(dollars in thousands)	2014		2013		Change		Change
	$	195	$	59	$	136		NM

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Net loss attributable to noncontrolling interests reflects the ownership interests in our net income or loss, less amounts owed to our preferred shareholders, to parties other than us. During the three months ended March 31, 2014, we incurred a net loss of $1.4 million compared with net income of $2.0 million for the three months ended March 31, 2013. The weighted average percentage of the common Operating Partnership units held by third parties decreased to 4.3% for the three months ended March 31, 2014 compared with 4.8% for the three months ended March 31, 2013.

At March 31, 2014, we consolidated the operating results of one joint venture and recognized our joint venture partner’s percentage of gains or losses within net loss attributable to noncontrolling interests. On November 8, 2013, we acquired the remaining interest, which was owned by an unrelated third party for the three months ended March 31, 2013, in a consolidated partnership that owns two buildings at Redland Corporate Center for $4.6 million.

Same Property Net Operating Income

Same Property Net Operating Income (“Same Property NOI”), defined as operating revenues (rental, tenant reimbursements and other revenues) less operating expenses (property operating expenses, real estate taxes and insurance) from the properties whose period-over-period operations can be viewed on a comparative basis (i.e., those consolidated properties owned and in-service for the entirety of the periods presented), is a primary performance measure we use to assess the results of operations at our properties. Same Property NOI is a non-GAAP measure. As an indication of our operating performance, Same Property NOI should not be considered an alternative to net income calculated in accordance with GAAP. A reconciliation of our Same Property NOI to net income from our consolidated statements of operations is presented below. The Same Property NOI results exclude corporate-level expenses, as well as certain transactions, such as the collection of termination fees, as these items vary significantly period-over-period and thus impact trends and comparability. Also, we eliminate depreciation and amortization expense, which are property level expenses, in computing Same Property NOI because these are non-cash expenses that are based on historical cost accounting assumptions and management believes these expenses do not offer the investor significant insight into the operations of the property. This presentation allows management and investors to distinguish whether growth or declines in net operating income are a result of increases or decreases in property operations or the acquisition of additional properties. While this presentation provides useful information to management and investors, the results below should be read in conjunction with the results from the consolidated statements of operations to provide a complete depiction of total Company performance.

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Comparison of the Three Months Ended March 31, 2014 with the Three Months Ended March 31, 2013

The following table of selected operating data provides the basis for our discussion of Same Property NOI for the periods presented:

	Three Months Ended March 31,
(dollars in thousands)	2014			2013			$ Change			% Change
Number of buildings(1)		133			133			—			—
Same property revenues
Rental	$	30,916		$	30,069		$	847			2.8
Tenant reimbursements and other		8,885			7,730			1,155			14.9
Total same property revenues		39,801			37,799			2,002			5.3
Same property operating expenses
Property		11,588			9,786			1,802			18.4
Real estate taxes and insurance		4,100			4,181			(81	)		(1.9	)
Total same property operating expenses		15,688			13,967			1,721			12.3
Same property net operating income	$	24,113		$	23,832		$	281			1.2
Reconciliation to net (loss) income:
Same property net operating income	$	24,113		$	23,832
Non-comparable net operating income(2)		134			504
General and administrative expenses		(5,196	)		(5,267	)
Depreciation and amortization		(15,104	)		(13,987	)
Other(3)		(4,348	)		(8,400	)
Discontinued operations		(1,042	)		5,281
Net (loss) income	$	(1,443	)	$	1,963
	Weighted Average Occupancy For Three Months Ended March 31,
	2014			2013
Same Properties		85.7	%		81.7	%

⁽¹⁾ Same-property comparisons are based upon those consolidated properties owned and in-service for the entirety of the periods presented. Same-property results exclude the operating results of the following non-comparable properties: 440 First Street, NW, Storey Park, West Park, Patrick Center and a building at Redland Corporate Center.

⁽²⁾  Non-comparable property NOI has been adjusted to reflect a normalized management fee percentage in lieu of an administrative overhead allocation for comparative purposes.

⁽³⁾ Combines acquisition costs and total other expenses, net from our consolidated statements of operations.

Same Property NOI increased $0.3 million for the three months ended March 31, 2014 compared with the same period in 2013. Total same property rental revenues increased $0.8 million for the three months ended March 31, 2014 compared with the same period in 2013 primarily due to an increase in occupancy. Tenant reimbursements and other revenue increased $1.2 million as a result of an increase in recoverable snow and ice removal costs. Same property operating expenses increased $1.8 million for the three months ended March 31, 2014 compared with the same period in 2013 due to an increase in snow and ice removal costs. Real estate taxes and insurance expense decreased $0.1 million for the three months ended March 31, 2014 compared with the same period in 2013 due to lower real estate tax assessments.

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Washington, D.C.

	Three Months Ended March 31,
(dollars in thousands)	2014			2013			$ Change			% Change
Number of buildings(1)		3			3			—			—
Same property revenues
Rental	$	4,566		$	4,399		$	167			3.8
Tenant reimbursements and other		2,049			2,087			(38	)		(1.8	)
Total same property revenues		6,615			6,486			129			2.0
Same property operating expenses
Property		1,570			1,559			11			0.7
Real estate taxes and insurance		1,024			1,075			(51	)		(4.7	)
Total same property operating expenses		2,594			2,634			(40	)		(1.5	)
Same property net operating income:	$	4,021		$	3,852		$	169			4.4
Reconciliation to total property operating income
Same property net operating income	$	4,021		$	3,852
Non-comparable net operating (loss) income(2)		(122	)		522
Total property operating income	$	3,899		$	4,374
	Weighted Average Occupancy For Three Months Ended March 31,
	2014			2013
Same Properties		93.5	%		99.3	%

⁽¹⁾  Same-property comparisons are based upon those consolidated properties owned and in-service for the entirety of the periods presented. Same-property results exclude the operating results of the following non-comparable properties: 440 First Street, NW and Storey Park.

⁽²⁾  Non-comparable property NOI has been adjusted to reflect a normalized management fee percentage in lieu of an administrative overhead allocation for comparative purposes.

Same Property NOI for the Washington, D.C. properties increased $0.2 million for the three months ended March 31, 2014 compared with the same period in 2013. Total same property revenues increased $0.1 million for the three months ended March 31, 2014 compared with the same period in 2013 as a result of an increase in non-cash rental revenue. Total same property operating expenses remained relatively flat for the three months ended March 31, 2014 compared with the same period in 2013 due to a slight increase in property operating expenses offset by a slight decrease in real estate taxes and insurance.

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Maryland

	Three Months Ended March 31,
(dollars in thousands)	2014			2013			$ Change			% Change
Number of buildings(1)		41			41			—			—
Same property revenues
Rental	$	8,470		$	8,503		$	(33	)		(0.4	)
Tenant reimbursements and other		1,962			1,559			403			25.8
Total same property revenues		10,432			10,062			370			3.7
Same property operating expenses
Property		3,318			2,520			798			31.7
Real estate taxes and insurance		868			756			112			14.8
Total same property operating expenses		4,186			3,276			910			27.8
Same property net operating income	$	6,246		$	6,786		$	(540	)		(8.0	)
Reconciliation to total property operating income:
Same property net operating income	$	6,246		$	6,786
Non-comparable net operating income(2)		449			133
Total property operating income	$	6,695		$	6,919
	Weighted Average Occupancy For Three Months Ended March 31,
	2014			2013
Same Properties		82.8	%		81.9	%

⁽¹⁾ Same-property comparisons are based upon those consolidated properties owned or in-service for the entirety of the periods presented. Same-property results exclude the operating results of the following non-comparable properties: West Park, Patrick Center and a building at Redland Corporate Center.

⁽²⁾ Non-comparable property NOI has been adjusted to reflect a normalized management fee percentage in lieu of an administrative overhead allocation for comparative purposes.

Same Property NOI for the Maryland properties decreased $0.5 million for the three months ended March 31, 2014 compared with the same period in 2013. Total same property revenues increased $0.4 million for the three months ended March 31, 2014 compared with the same period in 2013 due to an increase in recoverable snow and ice expense. Total same property operating expenses increased $0.9 million for the three months ended March 31, 2014 compared with the same period in 2013 primarily due to an increase in snow and ice removal costs.

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Northern Virginia

	Three Months Ended March 31,
(dollars in thousands)	2014			2013			$ Change			% Change
Number of buildings(1)		51			51			—			—
Same property revenues
Rental	$	10,444		$	10,015		$	429			4.3
Tenant reimbursements and other		3,146			2,702			444			16.4
Total same property revenues		13,590			12,717			873			6.9
Same property operating expenses
Property		3,877			3,149			728			23.1
Real estate taxes and insurance		1,524			1,690			(166	)		(9.8	)
Total same property operating expenses		5,401			4,839			562			11.6
Same property net operating income	$	8,189		$	7,878		$	311			3.9
Reconciliation to total property operating income:
Same property net operating income	$	8,189		$	7,878
Non-comparable net operating loss(2)		(23	)		(93	)
Total property operating income	$	8,166		$	7,785
	Weighted Average Occupancy For Three Months Ended March 31,
	2014			2013
Same Properties		85.9	%		77.5	%

⁽¹⁾  Same-property comparisons are based upon those consolidated properties owned and in-service for the entirety of the periods presented. Same-property results do not exclude the operating results of any non-comparable properties during each of the periods presented.

⁽²⁾  Non-comparable property NOI has been adjusted to reflect a normalized management fee percentage in lieu of an administrative overhead allocation for comparative purposes.

Same Property NOI for the Northern Virginia properties increased $0.3 million for the three months ended March 31, 2014 compared with the same period in 2013. Total same property revenues increased $0.9 million for the three months ended March 31, 2014 compared with the same period in 2013 primarily due to an increase in both occupancy and recoverable snow and ice removal costs. Total same property operating expenses also increased $0.6 million for the three months ended March 31, 2014 compared with the same period in 2013 primarily due to an increase in snow and ice removal costs, which was partially offset by lower real estate assessments.

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Southern Virginia

	Three Months Ended March 31,
(dollars in thousands)	2014			2013			$ Change		% Change
Number of buildings(1)		38			38			—		—
Same property revenues
Rental	$	7,436		$	7,152		$	284		4.0
Tenant reimbursements and other		1,728			1,382			346		25.0
Total same property revenues		9,164			8,534			630		7.4
Same property operating expenses
Property		2,823			2,558			265		10.4
Real estate taxes and insurance		684			660			24		3.6
Total same property operating expenses		3,507			3,218			289		9.0
Same property net operating income	$	5,657		$	5,316		$	341		6.4
Reconciliation to total property operating income:
Same property net operating income	$	5,657		$	5,316
Non-comparable net operating loss(2)		(170	)		(58	)
Total property operating income	$	5,487		$	5,258
	Weighted Average Occupancy For Three Months Ended March 31,
	2014			2013
Same Properties		86.1	%		84.8	%

⁽¹⁾  Same-property comparisons are based upon those consolidated properties owned and in-service for the entirety of the periods presented. Same-property results do not exclude the operating results of any non-comparable properties during each of the periods presented.

⁽²⁾  Non-comparable property NOI has been adjusted to reflect a normalized management fee percentage in lieu of an administrative overhead allocation for comparative purposes.

Same Property NOI for the Southern Virginia properties increased $0.3 million for the three months ended March 31, 2014 compared with the same period in 2013. Total same property revenues increased $0.6 million for the three months ended March 31, 2014 compared with 2013 as a result of an increase in occupancy and recoverable snow and ice removal costs. Total same property operating expense increased $0.3 million for the three months ended March 31, 2014 compared with the same period in 2013 primarily due to an increase in snow and ice removal costs.

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Liquidity and Capital Resources

Overview

We seek to maintain a flexible balance sheet, with an appropriate balance of cash, debt, equity and available funds under our unsecured revolving credit facility, to readily provide access to capital given the volatility of the market and to position us to take advantage of potential growth opportunities. In January 2013, we provided an updated strategic and capital plan, which included the marketing of our industrial properties, the execution of steps designed to increase balance sheet flexibility, reduce leverage and a rightsizing of our quarterly dividend. We have executed on several key components of our updated strategic and capital plan, including the industrial portfolio sale, which generated total gross proceeds of $259.0 million; the issuance of 7,475,000 common shares, the net proceeds of which were primarily used to repay outstanding debt; and a 25% reduction in the quarterly dividend beginning in the first quarter of 2013. During the first four months of 2014, we sold eleven buildings in our Maryland reporting segment for net proceeds of $45.4 million and acquired a building in Washington, D.C. for $58.0 million, which was funded with the assumption of a $37.3 million mortgage loan, a $20.0 million draw under our unsecured revolving credit facility and available cash. We expect to meet short-term liquidity requirements generally through working capital, net cash provided by operations, and, if necessary, borrowings on our unsecured revolving credit facility. Our short-term obligations consist primarily of the lease for our corporate headquarters, normal recurring operating expenses, regular debt payments, recurring expenditures for corporate and administrative needs, non-recurring expenditures such as capital improvements, tenant improvements and redevelopments, leasing commissions and dividends to preferred and common shareholders.

At March 31, 2014, we had $96.0 million outstanding under our unsecured revolving credit facility. As of the date of this filing, we had $101.0 million outstanding and $120.8 million of availability under our unsecured revolving credit facility. We have $30.0 million of debt maturing in 2014.

Over the next twelve months, we believe that we will generate sufficient cash flow from operations and have access to the capital resources, through debt and equity markets, necessary to expand and develop our business, to fund our operating and administrative expenses, to continue to meet our debt service obligations and to pay distributions in accordance with REIT requirements. However, our cash flow from operations and ability to access the debt and equity markets could be adversely affected due to uncertain economic factors and volatility in the financial and credit markets. In particular, we cannot assure that our tenants will not default on their leases or fail to make full rental payments if their businesses are challenged due to, among other things, the economic conditions (particularly if the tenants are unable to secure financing to operate their businesses). This may be particularly true for our tenants that are smaller companies. Further, approximately 8.4% of our annualized cash basis rent (excluding month-to-month leases) is scheduled to expire during the next twelve months and, if we are unable to renew these leases or re-lease the space, our cash flow could be negatively impacted.

We also believe, based on our historical experience and forecasted operations, that we will have sufficient cash flow or access to capital to meet our obligations over the next five years. We intend to meet our long-term funding requirements for property acquisitions, development, redevelopment and other non-recurring capital improvements through net cash provided from operations, long-term secured and unsecured indebtedness, including borrowings under our unsecured revolving credit facility and unsecured term loan, proceeds from disposal of strategically identified assets (outright or through joint ventures) and the issuance of equity and debt securities. In the process of exploring different financing options, we actively monitor the impact that each potential financing decision will have on our financial covenants in order to avoid any issues of non-compliance with the terms of our existing financial covenants.

Our ability to raise funds through sales of debt and equity securities and access other third party sources of capital in the future will be dependent on, among other things, general economic conditions, general market conditions for REITs, rental rates, occupancy levels, market perceptions and the trading price of our shares. We will continue to analyze which sources of capital are most advantageous to us at any particular point in time, but the capital markets may not be consistently available on terms we deem attractive, or at all.

Financial Covenants

Our outstanding corporate debt agreements contain specific financial covenants that may impact future financing decisions made by us or may be impacted by a decline in operations. As of March 31, 2014, we were in compliance with the covenants of our amended and restated unsecured term loan, amended and restated unsecured revolving credit facility and construction loan.

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Our continued ability to borrow under the amended and restated unsecured revolving credit facility is subject to compliance with financial and operating covenants, and a failure to comply with any of these covenants could result in a default under the credit facility. These debt agreements also contain cross-default provisions that would be triggered if we are in default under other loans, including mortgage loans, in excess of certain amounts. In the event of a default, the lenders could accelerate the timing of payments under the debt obligations and we may be required to repay such debt with capital from other sources, which may not be available on attractive terms, or at all, which would have a material adverse effect on our liquidity, financial condition, results of operations and ability to make distributions to our shareholders.

Below is a summary of certain financial covenants associated with these debt agreements (dollars in thousands):

Unsecured Revolving Credit Facility, Unsecured Term Loan and Construction Loan

Covenants	Quarter Ended March 31, 2014	Covenant
Consolidated Total Leverage Ratio(1)	44.5%	< 60.0%
Tangible Net Worth(1)	$ 900,026	>$601,202
Fixed Charge Coverage Ratio(1)	1.98x	> 1.50x
Maximum Dividend Payout Ratio	69.5%	< 95%
Restricted Investments:
Joint Ventures	5.9%	< 15%
Real Estate Assets Under Development	3.5%	< 15%
Undeveloped Land	1.4%	< 5%
Structured Finance Investments	3.9%	< 5%
Total Restricted Investments	8.8%	< 25%
Restricted Indebtedness:
Maximum Secured Debt	19.8%	< 40%
Unencumbered Pool Leverage(1)	44.8%	< 60%
Unencumbered Pool Interest Coverage Ratio(1)	5.63x	> 1.75x

⁽¹⁾  These are the only covenants that apply to our construction loan, which are calculated in accordance with the amended and restated unsecured revolving credit facility.

Cash Flows

Due to the nature of our business, we rely on working capital and net cash provided by operations and, if necessary, borrowings under our unsecured revolving credit facility to fund our short-term liquidity needs. Net cash provided by operations is substantially dependent on the continued receipt of rental payments and other expenses reimbursed by our tenants. The ability of tenants to meet their obligations, including the payment of rent contractually owed to us, and our ability to lease space to new or replacement tenants on favorable terms, could affect our cash available for short-term liquidity needs. We intend to meet short and long term funding requirements for debt maturities, interest payments, dividend distributions and capital expenditures through cash flow provided by operations, long-term secured and unsecured indebtedness, including borrowings under our unsecured revolving credit facility, proceeds from asset disposals and the issuance of equity and debt securities. However, we may not be able to obtain capital from such sources on favorable terms, in the time period we desire, or at all. In addition, our continued ability to borrow under our existing debt instruments is subject to compliance with our financial and operating covenants and a failure to comply with such covenants could cause a default under the applicable debt agreement. In the event of a default, we may be required to repay such debt with capital from other sources, which may not be available on attractive terms, or at all.

We may also fund building acquisitions, development, redevelopment and other non-recurring capital improvements through additional borrowings, issuance of common Operating Partnership units or sales of assets, outright or through joint ventures.

Consolidated cash flow information is summarized as follows:

	Three Months Ended March 31,
(dollars in thousands)	2014			2013			Change
Cash provided by operating activities	$	11,446		$	14,850		$	(3,404	)
Cash provided by (used in) investing activities		9,275			(16,092	)		25,367
Cash (used in) provided by financing activities		(14,619	)		9,662			(24,281	)

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Net cash provided by operating activities decreased $3.4 million for the three months ended March 31, 2014 compared with the same period in 2013, primarily due to a decrease in net operating income as the result of the sale of our industrial portfolio in June 2013 and an increase in accounts receivable. The decrease in cash provided by operating activities was partially offset by a lesser decrease in rents received in advance for the three months ended March 31, 2014 compared with the same period in 2013.

Net cash provided by investing activities was $9.3 million for the three months ended March 31, 2014 compared with net cash used in investing activities of $16.1 million for the three months ended March 31, 2013. During the three months ended March 31, 2014, we received aggregate net proceeds of $31.6 million from the sale of Girard Business Center and Gateway Center. We did not sell any properties during the three months ended March 31, 2013. Also, during the three months ended March 31, 2014, cash used for construction activities and additions to rental properties decreased $4.4 million compared with the three months ended March 31, 2013 due to a reduction in amounts spent on development and redevelopment activities and tenant improvements. The cash provided by investing activities for the three months ended March 31, 2014 was partially offset by a $2.0 million deposit made toward the purchase of 1401 K Street, NW, which was acquired on April 8, 2014, and a $9.0 million increase on our loan to the owners of 950 F Street, NW, which was provided by a draw under our unsecured revolving credit facility.

Net cash used in financing activities was $14.6 million for the three months ended March 31, 2014 compared with cash provided by financing activities of $9.7 million for the three months ended March 31, 2013. We issued $27.8 million of debt and repaid $30.3 million of outstanding debt during the three months ended March 31, 2014 compared with the issuance of $62.5 million of debt and the repayment of $41.8 million of outstanding debt during the three months ended March 31, 2013. In May 2013, we issued 7.5 million common shares, which resulted in an increase in dividends paid to common shareholders of $1.1 million for the three months ended March 31, 2014 compared with the same period in 2013.

Contractual Obligations

On December 29, 2010, we entered into an unconsolidated joint venture with AEW Capital Management, L.P. and acquired Aviation Business Park, a three-building, single-story office park totaling 121,000 square feet in Glen Burnie, Maryland. During the third quarter of 2010, we used available cash to acquire a $10.6 million first mortgage loan collateralized by the property for $8.0 million. The property was acquired by the joint venture through a deed-in-lieu of foreclosure in return for additional consideration to the owner if certain future leasing hurdles are met. At March 31, 2014, the fair value of our contingent consideration obligation to the former owner of Aviation Business Park was immaterial.

As of March 31, 2014, we had contractual construction in progress obligations, which included amounts accrued at March 31, 2014, of $4.4 million related to development activities at Storey Park and redevelopment activities at 440 First Street, NW, both of which are located in our Washington, D.C. reporting segment. As of March 31, 2014, we had contractual rental property and furniture, fixtures and equipment obligations of $5.3 million outstanding, which included amounts accrued at March 31, 2014. The amount of contractual rental property and furniture, fixtures and equipment obligations at March 31, 2014 included a major renovation at 1211 Connecticut Avenue, NW, which is located in our Washington, D.C. reporting segment. We anticipate meeting our contractual obligations related to our construction activities with cash from our operating activities. In the event cash from our operating activities is not sufficient to meet our contractual obligations, we can access additional capital through our unsecured revolving credit facility.

We remain liable, solely to the extent of our proportionate ownership percentage, to fund any capital shortfalls or commitments from properties owned through unconsolidated joint ventures.

We have various obligations to certain local municipalities associated with our development projects that will require completion of specified site improvements, such as sewer and road maintenance, grading and other general landscaping work. As of March 31, 2014, we remained liable to those local municipalities for $0.1 million in the event that we do not complete the specified work. We intend to complete the improvements in satisfaction of these obligations.

We had no other material contractual obligations as of March 31, 2014.

Distributions

We are required to distribute at least 90% of our REIT taxable income to our shareholders in order to maintain qualification as a REIT, including some types of taxable income we recognize for tax purposes but with regard to which we do not receive corresponding cash. In addition, we must distribute 100% of our taxable income to our shareholders to eliminate our U.S. federal income tax liability. The funds we use to pay dividends on our common and preferred shares are provided through distributions from

49

the Operating Partnership. For each of our common and preferred shares, the Operating Partnership has issued a corresponding common and preferred unit to us. We are the sole general partner of and, as of March 31, 2014, owned 100% of the preferred interest and 95.7% of the common interest in the Operating Partnership. The remaining common interests in the Operating Partnership are limited partnership interests, some of which are owned by several of our executive officers who contributed properties and other assets to us upon our formation, and the remainder of which are owned by other unrelated parties. The Operating Partnership is required to make cash distributions to us in an amount sufficient to meet our distribution requirements. The cash distributions by the Operating Partnership reduce the amount of cash that is available for general corporate purposes, which includes repayment of debt, funding acquisitions or construction activities, and for other corporate operating activities.

On a quarterly basis, our management team recommends a distribution amount that must then be approved by our Board of Trustees in its sole discretion. The amount of future distributions will be at the discretion of our Board of Trustees and will be based on, among other things: (i) the taxable income and cash flow generated by our operating activities; (ii) cash generated by, or used in, our financing and investing activities; (iii) the annual distribution requirements under the REIT provisions of the Internal Revenue Code; and (iv) such other factors as the Board of Trustees deems relevant. Our ability to make cash distributions will also be limited by the covenants contained in our Operating Partnership agreement and our financing arrangements as well as limitations imposed by state law and the agreements governing any future indebtedness. See “—Financial Covenants” above and “Item 1A – Risk Factors – Risks Related to Our Business and Properties – Covenants in our debt agreements could adversely affect our liquidity and financial condition” in Part I, Item 1A in our Annual Report on Form 10-K filed with the SEC for the year ended December 31, 2013 for additional information regarding the financial covenants.

Dividends

On April 22, 2014, we declared a dividend of $0.15 per common share, equating to an annualized dividend of $0.60 per common share. The dividend will be paid on May 15, 2014 to common shareholders of record as of May 6, 2014. We also declared a dividend of $0.484375 per share on our Series A Preferred Shares. The dividend will be paid on May 15, 2014 to preferred shareholders of record as of May 6, 2014.

Funds From Operations

Funds from operations (“FFO”) is a non-GAAP measure used by many investors and analysts that follow the real estate industry. We consider FFO a useful measure of performance for an equity REIT because it facilitates an understanding of the operating performance of our properties without giving effect to real estate depreciation and amortization, which assume that the value of real estate assets diminishes predictably over time. Since real estate values have historically risen or fallen with market conditions, we believe that FFO provides a meaningful indication of our performance. We also consider FFO an appropriate supplemental performance measure given its wide use by and relevance to investors and analysts. FFO, reflecting the assumption that real estate asset values rise or fall with market conditions, principally adjusts for the effects of GAAP depreciation and amortization of real estate assets, which assume that the value of real estate diminishes predictably over time.

FFO, as defined by the National Association of Real Estate Investment Trusts (“NAREIT”), represents net income (computed in accordance with GAAP), excluding gains (losses) on sales of real estate and impairments of real estate assets, plus real estate-related depreciation and amortization and after adjustments for unconsolidated partnerships and joint ventures. We compute FFO in accordance with NAREIT’s definition, which may differ from the methodology for calculating FFO, or similarly titled measures, used by other companies and this may not be comparable to those presentations. Our methodology for computing FFO adds back noncontrolling interests in the income from our Operating Partnership in determining FFO. We believe this is appropriate as common Operating Partnership units are presented on an as-converted, one-for-one basis for shares of stock in determining FFO per diluted share.

FFO does not represent amounts available for management’s discretionary use because of needed capital replacement or expansion, debt service obligations or other commitments and uncertainties, nor is it indicative of funds available to fund our cash needs, including our ability to make distributions. We present FFO per diluted share calculations that are based on the outstanding dilutive common shares plus the outstanding common Operating Partnership units for the periods presented. Our presentation of FFO in accordance with NAREIT’s definition, or as adjusted by us, should not be considered as an alternative to net income (computed in accordance with GAAP) as an indicator of our financial performance or to cash flow from operating activities (computed in accordance with GAAP) as an indicator of our liquidity.

50

The following table presents a reconciliation of net loss attributable to common shareholders to FFO available to common shareholders and unitholders (amounts in thousands):

	Three Months Ended March 31,
	2014			2013
Net (loss) income attributable to First Potomac Realty Trust	$	(1,248	)	$	2,022
Less: Dividends on preferred shares		(3,100	)		(3,100	)
Net loss attributable to common shareholders		(4,348	)		(1,078	)
Add: Depreciation and amortization:
Real estate assets		15,104			13,987
Discontinued operations		455			2,921
Unconsolidated joint ventures		1,289			1,352
Consolidated joint ventures		—			(51	)
Gain on sale of real estate property		(54	)		—
Net loss attributable to noncontrolling interests in the Operating Partnership		(195	)		(54	)
FFO available to common shareholders and unitholders		12,251			17,077
Dividends on preferred shares		3,100			3,100
FFO	$	15,351		$	20,177
Weighted average common shares and Operating Partnership units outstanding – diluted		60,794			53,106

Off-Balance Sheet Arrangements

We are secondarily liable for $7.0 million of mortgage debt, which represents our proportionate share of the mortgage debt that is secured by two properties we own through unconsolidated joint ventures. Management believes the fair value of the potential liability to us is inconsequential as the likelihood of our need to perform under the debt agreement is remote. See footnote 6, Investment in Affiliates, in the notes to our condensed consolidated financial statements for more information.

ITEM 3: QUALITATIVE AND QUANTITATIVE DISCLOSURES ABOUT MARKET RISK

Our future income, cash flows and fair values relevant to financial instruments are dependent upon prevailing market interest rates. In the normal course of business, we are exposed to the effect of interest rate changes. We have historically entered into derivative agreements to mitigate exposure to unexpected changes in interest. Market risk refers to the risk of loss from adverse changes in market interest rates. We periodically use derivative financial instruments to seek to manage, or hedge, interest rate risks related to our borrowings. We do not use derivatives for trading or speculative purposes and only enter into contracts with major financial institutions based on their credit rating and other factors. We intend to enter into derivative agreements only with counterparties that we believe have a strong credit rating to mitigate the risk of counterparty default or insolvency.

We had $671.1 million of debt outstanding at March 31, 2014, of which $229.6 million was fixed rate debt and $300.0 million was hedged variable rate debt. The remainder of our debt, $141.5 million, was unhedged variable rate debt that consisted of $96.0 million under the unsecured revolving credit facility, a $22.0 million mortgage loan and the $23.5 million outstanding balance under a construction loan. The mortgage loan has a contractual interest rate of LIBOR plus 2.75%, with a 5.0% floor and the construction loan has a contractual interest rate of LIBOR plus 2.50%. At March 31, 2014, LIBOR was 0.15%. A change in interest rates of 1% would result in an increase or decrease of $1.2 million in interest expense on our unhedged variable rate debt on an annualized basis.

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The table below summarizes our interest rate swap agreements as of March 31, 2014 (dollars in thousands):

Effective Date	Maturity Date	Notional Amount		Interest Rate Contractual Component		Fixed LIBOR Interest Rate
July 2011	July 2016		35,000		LIBOR		1.754	%
July 2011	July 2016		25,000		LIBOR		1.763	%
July 2011	July 2017		30,000		LIBOR		2.093	%
July 2011	July 2017		30,000		LIBOR		2.093	%
September 2011	July 2018		30,000		LIBOR		1.660	%
January 2012	July 2018		25,000		LIBOR		1.394	%
March 2012	July 2017		25,000		LIBOR		1.129	%
March 2012	July 2017		12,500		LIBOR		1.129	%
March 2012	July 2018		12,500		LIBOR		1.383	%
June 2012	July 2017		50,000		LIBOR		0.955	%
June 2012	July 2018		25,000		LIBOR		1.135	%
Total/Weighted Average		$	300,000				1.505	%

For fixed rate debt, changes in interest rates generally affect the fair value of debt but not our earnings or cash flow. See footnote 10, Fair Value Measurements, in the notes to our condensed consolidated financial statements for more information on the fair value of our debt.

ITEM 4: CONTROLS AND PROCEDURES

Disclosure Controls and Procedures

We maintain disclosure controls and procedures (as defined in Rules 13a-15(e) and 15d-15(e) of the Securities Exchange Act of 1934, as amended (the “Exchange Act”)) that are designed to ensure that information required to be disclosed in our periodic reports pursuant to the Exchange Act, is recorded, processed, summarized and reported within the time periods specified in the SEC’s rules and forms, and that such information is accumulated and communicated to our management, including our principal executive officer and principal financial officer, as appropriate, to allow timely decisions regarding required financial disclosure.

We carried out an evaluation, under the supervision and with the participation of our management, including the principal executive officer and principal financial officer, of the effectiveness of the design and operation of our disclosure controls and procedures pursuant to Exchange Act Rule 13a-15(e) as of the end of the period covered by this report. Based upon this evaluation, our principal executive officer and principal financial officer concluded that our disclosure controls and procedures were effective as of the end of the period covered by this report.

Changes in Internal Control Over Financial Reporting

There were no changes in our internal control over financial reporting during the quarter ended March 31, 2014 that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

PART II: OTHER INFORMATION

Item 1. Legal Proceedings

We are subject to legal proceedings and claims arising in the ordinary course of our business. In the opinion of our Company’s management, as of March 31, 2014, we were not involved in any material litigation, nor, to management’s knowledge, is any material litigation threatened against us or the Operating Partnership.

Item 1A. Risk Factors

As of March 31, 2014, there were no material changes to our risk factors previously disclosed in Item 1A, “Risk Factors” in our Annual Report on Form 10-K for the year ended December 31, 2013.

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Item 2. Unregistered Sales of Equity Securities and Use of Proceeds

Unregistered Sales of Equity Securities

We did not sell any unregistered equity securities during the three months ended March 31, 2014. During the three months ended March 31, 2014, no common Operating Partnership units were redeemed for either an equivalent number of our common shares or available cash.

During the three months ended March 31, 2014, we issued 3,125 common Operating Partnership units to the seller of 840 First Street, NE, which we acquired in 2011. The issuance of the 3,125 common Operating Partnership units satisfied our remaining contingent consideration obligation to the seller of 840 First Street, NE. These common Operating Partnership units were issued in reliance upon exemptions from registration under Section 4(2) of the Securities Act of 1933, as amended (the “Securities Act”), and/or Regulation D promulgated under the Securities Act (“Regulation D”). Each of the limited partners represented to the Operating Partnership that it was an “accredited investor” as defined in Regulation D and that it was acquiring the common Operating Partnership units for investment purposes. The Operating Partnership issued the units only to the former owners of the property and did not engage in a general solicitation in connection with the issuance.

Issuer Purchases of Equity Securities

During the three months ended March 31, 2014, certain of our employees surrendered common shares owned by them to satisfy their statutory minimum federal income tax obligations associated with the vesting of restricted common shares of beneficial interest issued under our 2009 Equity Compensation Plan, as amended.

The following table summarizes all of these repurchases during the three months ended March 31, 2014.

Period	Total Number of Shares Purchased		Average Price Paid Per Share(1)		Total Number Of Shares Purchased As Part Of Publicly Announced Plans Or Programs		Maximum Number Of Shares That May Yet Be Purchased Under The Plans  Or Programs
January 1, 2014 through January 31, 2014		—	$	—		N/A		N/A
February 1, 2014 through February 28, 2014		29,886		12.83		N/A		N/A
March 1, 2014 through March 31, 2014		—		—		N/A		N/A
Total		29,886		12.83		N/A		N/A

⁽¹⁾  The price paid per share is based on the closing price of our common shares as of the date of the determination of the statutory minimum federal income tax.

Item 3. Defaults Upon Senior Securities

Not applicable.

Item 4. Mine Safety Disclosures

Not applicable.

Item  5. Other Information

Not applicable.

Item 6. Exhibits

No.	Description
31.1*	Section 302 Certification of Chief Executive Officer.
31.2*	Section 302 Certification of Chief Financial Officer.
32.1**	Section 906 Certification of Chief Executive Officer.
32.2**	Section 906 Certification of Chief Financial Officer.

53

101* XBRL (Extensible Business Reporting Language). The following materials from the First Potomac Realty Trust’s Quarterly Report on Form 10-Q for the period ended March 31, 2014, formatted in XBRL: (i) Consolidated balance sheets as of March 31, 2014 (unaudited) and December 31, 2013; (ii) Consolidated statements of operations (unaudited) for the three months ended March 31, 2014 and 2013; (iii) Consolidated statements of comprehensive loss (unaudited) for the three months ended March 31, 2014 and 2013; (iv) Consolidated statements of cash flows (unaudited) for the three months ended March 31, 2014 and 2013; and (v) Notes to condensed consolidated financial statements (unaudited).

* Filed herewith.

** Furnished herewith.

54

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, as amended, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

	FIRST POTOMAC REALTY TRUST
Date: April 30, 2014	/s/ Douglas J. Donatelli
	Douglas J. Donatelli
	Chairman of the Board and Chief Executive Officer
Date: April 30, 2014	/s/ Andrew P. Blocher
	Andrew P. Blocher
	Executive Vice President and Chief Financial Officer

55

EX-31.1

Exhibit 31.1

CERTIFICATION

I, Douglas J. Donatelli, certify that:

1. I have reviewed this quarterly report on Form 10-Q of First Potomac Realty Trust;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

(a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

(b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

(c) Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d) Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting.

5. The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of trustees (or persons performing the equivalent functions):

(a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

(b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date: April 30, 2014	/s/ Douglas J. Donatelli
	Douglas J. Donatelli
	Chairman of the Board and Chief Executive Officer

EX-31.2

Exhibit 31.2

CERTIFICATION

I, Andrew P. Blocher, certify that:

1. I have reviewed this quarterly report on Form 10-Q of First Potomac Realty Trust;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

(a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

(b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

(c) Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d) Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting.

5. The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of trustees (or persons performing the equivalent functions):

(a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

(b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date: April 30, 2014	/s/ Andrew P. Blocher
	Andrew P. Blocher
	Executive Vice President and Chief Financial Officer

EX-32.1

EXHIBIT 32.1

CERTIFICATION PURSUANT TO

18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Quarterly Report of First Potomac Realty Trust (the “Company”) on Form 10-Q for the quarter ended March 31, 2014, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Douglas J. Donatelli, Chairman of the Board and Chief Executive Officer of the Company, certify, pursuant to 18 U.S.C. § 1350, as adopted pursuant to § 906 of the Sarbanes-Oxley Act of 2002, that:

(1) The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934, as amended; and

(2) The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

Date: April 30, 2014	/s/ Douglas J. Donatelli
	Douglas J. Donatelli
	Chairman of the Board and Chief Executive Officer

EX-32.2

EXHIBIT 32.2

CERTIFICATION PURSUANT TO

18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Quarterly Report of First Potomac Realty Trust (the “Company”) on Form 10-Q for the quarter ended March 31, 2014, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Andrew P. Blocher, Chief Financial Officer of the Company, certify, pursuant to 18 U.S.C. § 1350, as adopted pursuant to § 906 of the Sarbanes-Oxley Act of 2002, that:

(1) The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934, as amended; and

(2) The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

Date: April 30, 2014	/s/ Andrew P. Blocher
	Andrew P. Blocher
	Executive Vice President and Chief Financial Officer

XML

Earnings Per Common Share - Computation of Company's Basic and Diluted Earnings Per Share (Detail) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Numerator for basic and diluted earnings per common share:
Loss from continuing operations	$ (401)	$ (3,318)
(Loss) income from discontinued operations	(1,042)	5,281
Net (loss) income	(1,443)	1,963
Less: Net loss from continuing operations attributable to noncontrolling interests	150	314
Less: Net loss (income) from discontinued operations attributable to noncontrolling interests	45	(255)
Net (loss) income attributable to First Potomac Realty Trust	(1,248)	2,022
Less: Dividends on preferred shares	(3,100)	(3,100)
Net loss attributable to common shareholders	(4,348)	(1,078)
Less: Allocation to participating securities	(78)	(99)
Net loss attributable to common shareholders	$ (4,426)	$ (1,177)
Denominator for basic and diluted earnings per common share:
Weighted average shares outstanding - basic and diluted	58,097	50,404
Basic and diluted earnings per common share:
Loss from continuing operations	$ (0.06)	$ (0.12)
(Loss) income from discontinued operations	$ (0.02)	$ 0.10
Net loss	$ (0.08)	$ (0.02)

XML

Discontinued Operations - Net (Loss) Income from Discontinued Operations (Parenthetical) (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2014
Discontinued Operations And Disposal Groups [Abstract]
Unamortized straight-line rent	$ 1.0

XML

Investment in Affiliates - Results of Operations of Company's Unconsolidated Joint Ventures (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Schedule of Equity Method Investments [Line Items]
Total revenues	$ 41,414	$ 39,158
Total operating expenses	(37,535)	(34,076)
Net operating income	3,879	5,082
Depreciation and amortization	(15,104)	(13,987)
Other expenses, net	(4,280)	(8,400)
Net (loss) income	(227)	28
Unconsolidated Joint Ventures [Member]
Schedule of Equity Method Investments [Line Items]
Total revenues	5,752	6,052
Total operating expenses	(2,226)	(1,865)
Net operating income	3,526	4,187
Depreciation and amortization	(2,803)	(2,939)
Other expenses, net	(1,011)	(1,074)
Net (loss) income	$ (288)	$ 174

XML

Noncontrolling Interests - Additional Information (Detail) (USD $)	3 Months Ended	12 Months Ended		0 Months Ended	3 Months Ended			0 Months Ended
	Mar. 31, 2014 sqft	Dec. 31, 2013	Mar. 31, 2013	Aug. 04, 2011 Washington, D.C Reporting Segment [Member] acre	Mar. 31, 2014 Washington, D.C Reporting Segment [Member] sqft	Mar. 31, 2014 840 First Street, NE [Member]	Aug. 04, 2011 Greyhound Lines, Inc. [Member] Washington, D.C Reporting Segment [Member]	Aug. 04, 2011 Greyhound Lines, Inc. [Member] Washington, D.C Reporting Segment [Member] Maximum [Member] sqft
Business Acquisition [Line Items]
Conversion ratio for units to common shares	1
Cost to acquire all of the outstanding common Operating Partnership units not owned by the Company	$ 34,000,000
Fair value adjustment, cost basis	5,300,000	3,300,000
Outstanding Operating Partnership units not owned by the Company	2,630,577	2,627,452
Operating Partnership units not owned by Company	4.30%	4.30%
Operating Partnership units issued for acquisition						3,125
Operating Partnership units fair valued						40,000
Common operating partnership units redeemed for cash	0		0
Percentage of interest in joint venture							97.00%
Development of area for operations by joint venture				1.6
Area of land available for development in additional building space	1,500,000				700,000			712,000
Lease expiration date				Aug. 31, 2013
Projected incremental investment in development project					51,200,000
Original cost basis of the property					$ 43,300,000

XML

Debt - Schedule of Borrowings (Detail) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013	Mar. 31, 2013
Debt Instrument [Line Items]
Mortgage loans, effective interest rates ranging from 4.40% to 6.63%, maturing at various dates through July 2022	$ 275,095	$ 274,648	$ 274,648
Unsecured revolving credit facility, effective interest rate of LIBOR plus 1.50%, maturing October 2017	96,000	99,000
Total long term debt	671,095	673,648
Unsecured Term Loan, Effective Interest Rates Ranging from LIBOR Plus 1.45% to LIBOR Plus 1.90%, with Staggered Maturity Dates ranging from October 2018 to October 2020 [Member]
Debt Instrument [Line Items]
Unsecured term loan, effective interest rates ranging from LIBOR plus 1.45% to LIBOR plus 1.90%, with staggered maturity dates ranging from October 2018 to October 2020	$ 300,000	$ 300,000

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Subsequent Events - Additional Information (Detail) (USD $)	3 Months Ended	0 Months Ended
	Mar. 31, 2014 Person	Apr. 08, 2014 Washington, D.C. [Member] Subsequent Event [Member] sqft Tenants
Subsequent Event [Line Items]
Square foot office building in Washington, D.C.		117,000
Acquisition building in Washington, D.C.		$ 58,000,000
Percentage of property leased		88.00%
Number of tenants	541	22
Cost of acquisition funded using sale of industrial portfolio		37,300,000
Drawings under unsecured revolving credit facility		$ 20,000,000

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Investment in Affiliates - Net Assets of Company's Unconsolidated Joint Ventures (Detail) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013	Mar. 31, 2013	Dec. 31, 2012
Assets:
Rental property, net	$ 1,201,015	$ 1,203,299
Cash and cash equivalents	14,842	8,740	17,794	9,374
Total assets	1,481,336	1,502,460	1,718,364
Liabilities:
Total liabilities	721,720	729,948
Unconsolidated Joint Ventures [Member]
Assets:
Rental property, net	193,783	194,240
Cash and cash equivalents	4,349	3,680
Other assets	15,205	15,585
Total assets	213,337	213,505
Liabilities:
Mortgage loans	105,595	106,384
Other liabilities	6,378	5,046
Total liabilities	111,973	111,430
Net assets	$ 101,364	$ 102,075

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Equity (Tables)

3 Months Ended

Mar. 31, 2014

Equity [Abstract]

Company's Allocation between Non-controlling Interests

Our equity and redeemable noncontrolling interests are as follows (dollars in thousands):

	First Potomac Realty Trust			Non-redeemable noncontrolling interests		Total Equity			Redeemable noncontrolling interests
Balance at December 31, 2013	$	738,510		$	781	$	739,291		$	33,221
Net loss		(1,248	)		—		(1,248	)		(195	)
Changes in ownership, net		(1,502	)		89		(1,413	)		2,067
Distributions to owners		(11,889	)		—		(11,889	)		(393	)
Other comprehensive income		168			—		168			7
Balance at March 31, 2014	$	724,039		$	870	$	724,909		$	34,707

	First Potomac Realty Trust			Non-redeemable noncontrolling interests			Total Equity			Redeemable noncontrolling interests
Balance at December 31, 2012	$	658,765		$	3,728		$	662,493		$	34,367
Net income (loss)		2,022			(5	)		2,017			(54	)
Changes in ownership, net		(4,632	)		—			(4,632	)		5,067
Distributions to owners		(10,755	)		—			(10,755	)		(390	)
Other comprehensive income		1,041			—			1,041			52
Balance at March 31, 2013	$	646,441		$	3,723		$	650,164		$	39,042

Company's Accumulated Other Comprehensive Loss

A summary of our accumulated other comprehensive loss is as follows (dollars in thousands):

	2014			2013
Beginning balance at January1,	$	(3,836	)	$	(10,917	)
Net gain on derivative instruments		175			1,093
Net gain attributable to noncontrolling interests		(7	)		(52	)
Ending balance at March 31,	$	(3,668	)	$	(9,876	)

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Share-Based Payments - Assumptions Used in Fair Value Determination of Stock Option Granted (Detail) (Stock Option Awards [Member])	3 Months Ended
	Mar. 31, 2014
Stock Option Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Risk-free interest rate	1.72%
Expected volatility	39.04%
Expected dividend yield	4.66%
Weighted average expected life of options	5 years

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Debt - Summary of Company's Mortgage Debt (Detail) (USD $) In Thousands, unless otherwise specified						3 Months Ended		3 Months Ended		3 Months Ended		3 Months Ended		3 Months Ended		3 Months Ended		3 Months Ended		3 Months Ended		3 Months Ended		3 Months Ended		3 Months Ended		3 Months Ended		3 Months Ended		3 Months Ended		3 Months Ended
	Mar. 31, 2014	Dec. 31, 2013	Mar. 31, 2013	Mar. 31, 2014 Mortgage Loans [Member]	Mar. 31, 2013 Mortgage Loans [Member]	Mar. 31, 2014 Annapolis Business Center [Member]	Mar. 31, 2013 Annapolis Business Center [Member]	Mar. 31, 2014 Storey Park [Member]	Mar. 31, 2013 Storey Park [Member]	Mar. 31, 2014 Jackson National Life Loan [Member]	Mar. 31, 2013 Jackson National Life Loan [Member]	Mar. 31, 2014 Hanover Business Center Building D [Member]	Mar. 31, 2013 Hanover Business Center Building D [Member]	Mar. 31, 2014 Chesterfield Business Center Buildings C,D,G and H [Member]	Mar. 31, 2013 Chesterfield Business Center Buildings C,D,G and H [Member]	Mar. 31, 2014 440 First Street, NW Construction Loan [Member]	Mar. 31, 2013 440 First Street, NW Construction Loan [Member]	Mar. 31, 2014 Gateway Centre Manassas Building I [Member]	Mar. 31, 2013 Gateway Centre Manassas Building I [Member]	Mar. 31, 2014 Hillside I and II [Member]	Mar. 31, 2013 Hillside I and II [Member]	Mar. 31, 2014 Redland Corporate Center Buildings II & III [Member]	Mar. 31, 2013 Redland Corporate Center Buildings II & III [Member]	Mar. 31, 2014 Hanover Business Center Building C [Member]	Mar. 31, 2013 Hanover Business Center Building C [Member]	Mar. 31, 2014 840 First Street, NE [Member]	Mar. 31, 2013 840 First Street, NE [Member]	Mar. 31, 2014 Battlefield Corporate Center [Member]	Mar. 31, 2013 Battlefield Corporate Center [Member]	Mar. 31, 2014 Chesterfield Business Center Buildings A,B,E and F [Member]	Mar. 31, 2013 Chesterfield Business Center Buildings A,B,E and F [Member]	Mar. 31, 2014 Airpark Business Center [Member]	Mar. 31, 2013 Airpark Business Center [Member]	Mar. 31, 2014 1211 Connecticut Avenue, NW [Member]	Mar. 31, 2013 1211 Connecticut Avenue, NW [Member]
Debt Instrument [Line Items]
Maturity Date						June 2014		October 2014		August 2015		August 2015		August 2015		May 2016		November 2016		December 2016		November 2017		December 2017		July 2020		November 2020		June 2021		June 2021		July 2022
Effective Interest Rate						5.74%				5.19%		8.88%		8.50%				7.35%		5.75%		4.20%		7.88%		5.72%		4.26%		7.45%		7.45%		4.22%
Effective Interest Rate	5.12%					6.25%		5.80%		5.19%		6.63%		6.63%		4.78%		5.88%		4.62%		4.64%		6.63%		6.01%		4.40%		6.63%		6.63%		4.47%
Contractual Interest Rate terms								LIBOR + 2.75%								LIBOR + 2.50%
Total Mortgage Debt	$ 275,095	$ 274,648	$ 274,648			$ 8,035	$ 8,076	$ 22,000	$ 22,000	$ 65,829	$ 66,116	$ 216	$ 252	$ 589	$ 681	$ 23,493	$ 21,699	$ 588	$ 638	$ 13,248	$ 13,349	$ 66,737	$ 67,038	$ 617	$ 653	$ 37,000	$ 37,151	$ 3,812	$ 3,851	$ 1,824	$ 1,873	$ 995	$ 1,022	$ 30,112	$ 30,249
Unamortized fair value adjustments	(612)		(663)
Total contractual principal balance	$ 671,095	$ 673,648		$ 274,483	$ 273,985

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Segment Information - Summary of Segment Information (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014 Buildings sqft	Mar. 31, 2013 sqft Buildings	Dec. 31, 2013
Segment Reporting Information [Line Items]
Number of buildings	137	179
Square feet	8,735,388	13,449,003
Total revenues	$ 41,414	$ 39,158
Property operating expense	(12,898)	(10,311)
Real estate taxes and insurance	(4,269)	(4,511)
Total property operating income	24,247	24,336
Depreciation and amortization expense	(15,104)	(13,987)
General and administrative	(5,196)	(5,267)
Acquisition costs	(68)
Other expenses, net	(4,280)	(8,400)
Income from discontinued operations	(1,042)	5,281
Net (loss) income	(1,443)	1,963
Total assets	1,481,336	1,718,364	1,502,460
Capital expenditure	11,393	15,770
Washington, D.C. [Member]
Segment Reporting Information [Line Items]
Number of buildings	4	4
Square feet	522,560	531,714
Total revenues	7,140	7,616
Property operating expense	(2,187)	(1,893)
Real estate taxes and insurance	(1,054)	(1,349)
Total property operating income	3,899	4,374
Depreciation and amortization expense
General and administrative
Acquisition costs
Other expenses, net
Income from discontinued operations
Net (loss) income
Total assets	343,804	324,064
Capital expenditure	6,481	5,969
Maryland [Member]
Segment Reporting Information [Line Items]
Number of buildings	44	62
Square feet	2,274,813	3,779,047
Total revenues	11,445	10,216
Property operating expense	(3,746)	(2,489)
Real estate taxes and insurance	(1,004)	(808)
Total property operating income	6,695	6,919
Depreciation and amortization expense
General and administrative
Acquisition costs
Other expenses, net
Income from discontinued operations
Net (loss) income
Total assets	393,919	487,545
Capital expenditure	2,390	2,823
Northern Virginia [Member]
Segment Reporting Information [Line Items]
Number of buildings	51	56
Square feet	3,086,550	3,653,645
Total revenues	13,666	12,717
Property operating expense	(3,976)	(3,242)
Real estate taxes and insurance	(1,524)	(1,690)
Total property operating income	8,166	7,785
Depreciation and amortization expense
General and administrative
Acquisition costs
Other expenses, net
Income from discontinued operations
Net (loss) income
Total assets	421,556	460,996
Capital expenditure	822	3,617
Southern Virginia [Member]
Segment Reporting Information [Line Items]
Number of buildings	38	57
Square feet	2,851,465	5,484,597
Total revenues	9,163	8,609
Property operating expense	(2,989)	(2,687)
Real estate taxes and insurance	(687)	(664)
Total property operating income	5,487	5,258
Depreciation and amortization expense
General and administrative
Acquisition costs
Other expenses, net
Income from discontinued operations
Net (loss) income
Total assets	230,384	362,239
Capital expenditure	$ 1,423	$ 2,963

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Segment Information - Summary of Segment Information (Parenthetical) (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Segment Reporting [Abstract]
Corporate assets not allocated to any reportable segments	$ 91,673	$ 83,520
Capital expenditures for corporate assets not allocated to any reportable segments	$ 277	$ 398

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Share-Based Payments - Additional Information (Detail) (USD $)	1 Months Ended	3 Months Ended
	Feb. 28, 2014	Mar. 31, 2014	Mar. 31, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of options to be vested on the first anniversary of the grant date		25.00%
Percentage of options to be vested after the date of grant in each subsequent quarter		6.25%
Compensation expense associated with trustee share based awards		$ 137,000	$ 143,000
Term of stock granted		10 years
Unrecognized compensation cost related to non-vested shares		1,800,000
Weighted-average period for recognition of non-vested shares		2 years 8 months 12 days
Weighted average grant date fair value of the stock options issued		$ 2.67
Amount received from the exercise of stock options		79,000	86,000
Total intrinsic value of options exercised		18,000	26,000
Non-vested share awards issued	91,466
Vesting period of first award	3 years
Stock Option Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted-average period for recognition of non-vested shares		4 years 7 months 6 days
Restricted Share Based Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation cost related to non-vested shares		5,400,000
Non-vested share awards issued	103,075
Non-Vested Share Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expense associated with trustee share based awards		$ 700,000	$ 600,000
Non-vested share awards issued		103,075
Number of awards	2
Non-Officer Employees [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock options issued		135,250
Chief Executive Officer [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period of first award	1 year
Chief Executive Officer [Member] | Performance Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Non-vested share awards issued	11,609

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Earnings Per Common Share (Tables)

3 Months Ended

Mar. 31, 2014

Earnings Per Share [Abstract]

Computation of Company's Basic and Diluted Earnings Per Share

The following table sets forth the computation of our basic and diluted earnings per common share (amounts in thousands, except per share amounts):

	Three Months Ended March 31,
	2014			2013
Numerator for basic and diluted earnings per common share:
Loss from continuing operations	$	(401	)	$	(3,318	)
(Loss) income from discontinued operations		(1,042	)		5,281
Net (loss) income		(1,443	)		1,963
Less: Net loss from continuing operations attributable to noncontrolling interests		150			314
Less: Net loss (income) from discontinued operations attributable to noncontrolling interests		45			(255	)
Net (loss) income attributable to First Potomac Realty Trust		(1,248	)		2,022
Less: Dividends on preferred shares		(3,100	)		(3,100	)
Net loss attributable to common shareholders		(4,348	)		(1,078	)
Less: Allocation to participating securities		(78	)		(99	)
Net loss attributable to common shareholders	$	(4,426	)	$	(1,177	)
Denominator for basic and diluted earnings per common share:
Weighted average shares outstanding – basic and diluted		58,097			50,404
Basic and diluted earnings per common share:
Loss from continuing operations	$	(0.06	)	$	(0.12	)
(Loss) income from discontinued operations		(0.02	)		0.10
Net loss	$	(0.08	)	$	(0.02	)

Anti-Dilutive Shares Not Included in Calculation of Diluted Earnings Per Share

In accordance with GAAP regarding earnings per common share, we did not include the following potential weighted average common shares in our calculation of diluted earnings per common share as they are anti-dilutive for the periods presented (amounts in thousands):

	Three Months Ended March 31,
	2014		2013
Stock option awards		1,206		1,495
Non-vested share awards		414		533
Series A Preferred Shares(1)		12,671		11,643
		14,291		13,671

⁽¹⁾  Our Series A Preferred Shares are only convertible into our common shares upon certain changes in control of our Company. The dilutive shares are calculated as the daily average of the face value of the Series A Preferred Shares divided by the outstanding common share price.

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Discontinued Operation - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	1 Months Ended	3 Months Ended	1 Months Ended
	Jan. 31, 2014	Mar. 31, 2014	Apr. 30, 2014 Subsequent Event [Member]	Jan. 31, 2014 Maryland [Member] Girard Business Center [Member] Buildings sqft	Jan. 31, 2014 Maryland [Member] Gateway Center [Member] Buildings sqft
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Industrial portfolio				297,000	45,000
Number of buildings				7	2
Proceeds from sale of building	$ 31.6	$ 29.0
Gain on sale of portfolio		0.1
Liabilities of the buildings		0.2
Proceeds from sale of properties			$ 13.8

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Rental Property - Additional Information (Detail) (USD $)	0 Months Ended	3 Months Ended
	Aug. 04, 2011 acre	Mar. 31, 2014 sqft
Segment Reporting Information [Line Items]
Area of land available for development in additional building space		1,500,000
Projected incremental investment in redevelopment project		$ 54,300,000
Anticipated completion of redevelopment		139,000
440 First Street, NW [Member]
Segment Reporting Information [Line Items]
Original cost basis of the property		23,600,000
Washington, D.C Reporting Segment [Member]
Segment Reporting Information [Line Items]
Area of land available for development in additional building space		700,000
Development of area for operations by joint venture	1.6
Lease expiration date	Aug. 31, 2013
Projected incremental investment in development project		51,200,000
Original cost basis of the property		$ 43,300,000
Placed in-service redevelopment efforts		19,763
Redevelopment efforts yet to be placed-in service		119,510
Washington, D.C Reporting Segment [Member] | Greyhound Lines, Inc. [Member]
Segment Reporting Information [Line Items]
Percentage of interest in joint venture	97.00%
Washington, D.C Reporting Segment [Member] | Maximum [Member] | Greyhound Lines, Inc. [Member]
Segment Reporting Information [Line Items]
Area of land available for development in additional building space	712,000
Maryland Reporting Segment [Member]
Segment Reporting Information [Line Items]
Area of land available for development in additional building space		100,000
Northern Virginia [Member]
Segment Reporting Information [Line Items]
Area of land available for development in additional building space		600,000
Southern Virginia [Member]
Segment Reporting Information [Line Items]
Area of land available for development in additional building space		100,000

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Segment Information - Additional Information (Detail)	3 Months Ended
	Mar. 31, 2014 Segment
Segment Reporting [Abstract]
Number of distinct operating segments	4

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Summary of Significant Accounting Policies - Estimated Useful Lives of Company's Assets, by Class (Detail)	3 Months Ended
	Mar. 31, 2014
Property, Plant and Equipment [Line Items]
Lease related intangible assets, Useful life	The term of the related lease
Tenant improvements, Useful life	Shorter of the useful life of the asset or the term of the related lease
Buildings [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, Useful life	39 years
Minimum [Member] | Building and Improvements [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, Useful life	5 years
Minimum [Member] | Furniture, Fixtures and Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, Useful life	5 years
Maximum [Member] | Building and Improvements [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, Useful life	20 years
Maximum [Member] | Furniture, Fixtures and Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, Useful life	15 years

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Discontinued Operations - Summary of Completed Property Dispositions (Parenthetical) (Detail)	0 Months Ended		3 Months Ended
	Jun. 18, 2013 Property	May 07, 2013 sqft	Jun. 30, 2013 Property
Discontinued Operations And Disposal Groups [Abstract]
Number of industrial properties company sold			24
Reporting segment included in company's industrial properties		236,000
Sale of remaining industrial properties	23

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Equity - Additional Information (Detail) (USD $)	0 Months Ended
	Jan. 29, 2014	Jan. 29, 2014 Series A Preferred Shares [Member]	Jan. 29, 2014 Common Shares [Member]	Apr. 22, 2014 Subsequent Event [Member]	Apr. 22, 2014 Subsequent Event [Member] Series A Preferred Shares [Member]	Apr. 22, 2014 Subsequent Event [Member] Common Shares [Member]
Class of Stock [Line Items]
Common share dividend per share declared	$ 0.15			$ 0.15
Common share dividend per share annualized	$ 0.60			$ 0.60
Dividends declared on Series A Preferred Shares		$ 0.484375			$ 0.484375
Dividend declared date			Jan. 29, 2014			Apr. 22, 2014
Dividend paid date		Feb. 18, 2014	Feb. 18, 2014		May 15, 2014	May 15, 2014
Dividend record date		Feb. 10, 2014	Feb. 10, 2014		May 06, 2014	May 06, 2014

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Derivative Instruments - Additional Information (Detail) (USD $)				3 Months Ended
	Mar. 31, 2014 Interest_Rate_Swaps	Mar. 31, 2014 Interest Rate Swap [Member]	Jan. 31, 2014 Interest Rate Swap [Member]	Mar. 31, 2014 Interest Rate Swap [Member] Interest Expense [Member]	Mar. 31, 2013 Interest Rate Swap [Member] Interest Expense [Member]
Derivatives, Fair Value [Line Items]
Amount on variable rate debt		$ 300,000,000	$ 50,000,000
Fixed effective interest rate		1.505%
Number of interest rate swap agreements	11
Accumulated other comprehensive loss reclassified as an increase in interest expense				1,000,000	1,100,000
Estimated accumulated other comprehensive loss reclassified as an increase in interest expense over the following twelve months				$ 3,800,000

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Investment in Affiliates - Net Assets of Company's Unconsolidated Joint Ventures (Parenthetical) (Detail) (USD $) In Thousands, unless otherwise specified			3 Months Ended
	Mar. 31, 2014	Dec. 31, 2013	Mar. 31, 2014 Unconsolidated Entities [Member]
Schedule of Equity Method Investments [Line Items]
Recourse mortgage debt	$ 671,095	$ 673,648	$ 7,000
Maturity of recourse mortgage loan			2014-03
Extended maturity of loan			2014-09

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Summary of Significant Accounting Policies

3 Months Ended

Mar. 31, 2014

Accounting Policies [Abstract]

Summary of Significant Accounting Policies

(2) Summary of Significant Accounting Policies

(a) Principles of Consolidation

Our unaudited condensed consolidated financial statements include the accounts of our Company and the accounts of the Operating Partnership and the subsidiaries in which we or Operating Partnership has a controlling interest, which includes First Potomac Management LLC, a wholly-owned subsidiary that manages the majority of our properties. All intercompany balances and transactions have been eliminated in consolidation.

We have condensed or omitted certain information and note disclosures normally included in financial statements presented in accordance with U.S. generally accepted accounting principles (“GAAP”) in the accompanying unaudited condensed consolidated financial statements. We believe the disclosures made are adequate to prevent the information presented from being misleading. However, the unaudited condensed consolidated financial statements should be read in conjunction with the consolidated financial statements and notes thereto included in our annual report on Form 10-K for the year ended December 31, 2013 and as updated from time to time in other filings with the U.S. Securities and Exchange Commission (the “SEC”).

In our opinion, the accompanying unaudited condensed consolidated financial statements reflect all adjustments, consisting of normal recurring adjustments and accruals necessary to present fairly our financial position as of March 31, 2014 and the results of our operations, our comprehensive (loss) income and our cash flows for the three months ended March 31, 2014 and 2013. Interim results are not necessarily indicative of full-year performance due, in part, to the timing of transactions and the impact of acquisitions and dispositions throughout the year as well as the seasonality of certain operating expenses such as utilities expense and snow and ice removal costs.

(b) Use of Estimates

The preparation of condensed consolidated financial statements in conformity with GAAP requires our management team to make a number of estimates and assumptions relating to the reported amounts of assets and liabilities and the disclosure of contingent assets and liabilities at the date of the condensed consolidated financial statements and the reported amounts of revenues and expenses during the period. Estimates include the amount of accounts receivable that may be uncollectible; recoverability of notes receivable, future cash flows, discount and capitalization rate assumptions used to fair value acquired properties and to test impairment of certain long-lived assets and goodwill; derivative valuations; market lease rates, lease-up periods, leasing and tenant improvement costs used to fair value intangible assets acquired and probability weighted cash flow analysis used to fair value contingent liabilities. Actual results could differ from those estimates.

(c) Rental Property

Rental property is initially recorded at fair value, if acquired in a business combination, or initial cost when constructed or acquired in an asset purchase, less accumulated depreciation and, when appropriate, impairment losses. Improvements and replacements are capitalized at cost when they extend the useful life, increase capacity or improve the efficiency of the asset. Repairs and maintenance are charged to expense when incurred. Depreciation and amortization are recorded on a straight-line basis over the estimated useful lives of the assets. The estimated useful lives of our assets, by class, are as follows:

Buildings	39 years
Building improvements	5 to 20 years
Furniture, fixtures and equipment	5 to 15 years
Lease related intangible assets	The term of the related lease
Tenant improvements	Shorter of the useful life of the asset or the term of the related lease

We regularly review market conditions for possible impairment of a property’s carrying value. When circumstances such as adverse market conditions, changes in management’s intended holding period or potential sale to a third party indicate a possible impairment of the carrying value of a property, an impairment analysis is performed. We assess potential impairments based on an estimate of the future undiscounted cash flows (excluding interest charges) expected to result from the property’s use and eventual disposition. This estimate is based on projections of future revenues, expenses, capital improvement costs to maintain the operating capacity, expected holding periods and capitalization rates. These cash flows consider factors such as expected market trends and leasing prospects, as well as the effects of leasing demand, competition and other factors. If impairment exists due to the inability to recover the carrying value of a real estate investment based on forecasted undiscounted cash flows, an impairment loss is recorded to the extent that the carrying value exceeds the estimated fair value of the property. We are required to make estimates as to whether there are impairments in the carrying values of our investments in real estate. Further, we will record an impairment loss if we expect to dispose of a property, in the near term, at a price below carrying value. In such an event, we will record an impairment loss based on the difference between a property’s carrying value and our projected sales price less any estimated costs to sell.

We will classify a building as held-for-sale in accordance with GAAP in the period in which we have made the decision to dispose of the building, our Board of Trustees or a designated delegate has approved the sale, there is a high likelihood a binding agreement to purchase the property will be signed under which the buyer will be required to commit a significant amount of nonrefundable cash and no significant financing contingencies exist that could cause the transaction not to be completed in a timely manner. If these criteria are met, we will cease depreciation of the asset. We will classify any impairment loss, together with the building’s operating results, as discontinued operations in our consolidated statements of operations for all periods presented and classify the assets and related liabilities as held-for-sale in our consolidated balance sheets in the period the held-for-sale criteria are met. Interest expense is reclassified to discontinued operations only to the extent the held-for-sale property is secured by specific mortgage debt and the mortgage debt will not be assigned to another property owned by us after the disposition. However, in April 2014, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update No. 2014-08, Reporting Discontinued Operations and Disclosures of Disposals of Components of an Entity (“ASU 2014-08”), which will impact the future presentation of operations and gain or losses from disposed properties. For more information, see footnote 2(f), Summary of Significant Accounting Policies – Application of New Accounting Standards.

We recognize the fair value, if sufficient information exists to reasonably estimate the fair value, of any liability for conditional asset retirement obligations when assumed or incurred, which is generally upon acquisition, construction, development or redevelopment and/or through the normal operation of the asset.

We capitalize interest costs incurred on qualifying expenditures for real estate assets under development or redevelopment, which include our investment in assets owned through unconsolidated joint ventures that are under development or redevelopment, while being readied for their intended use in accordance with accounting requirements regarding capitalization of interest. We will capitalize interest when qualifying expenditures for the asset have been made, activities necessary to get the asset ready for its intended use are in progress and interest costs are being incurred. Capitalized interest also includes interest associated with expenditures incurred to acquire developable land while development activities are in progress. We also capitalize direct compensation costs of our construction personnel who manage the development and redevelopment projects, but only to the extent the employee’s time can be allocated to a project. Any portion of construction management costs not directly attributable to a specific project are recognized as general and administrative expense in the period incurred. We do not capitalize any other general and administrative costs such as office supplies, office rent expense or an overhead allocation to our development or redevelopment projects. Capitalized compensation costs were immaterial for the three months ended March 31, 2014 and 2013. Capitalization of interest will end when the asset is substantially complete and ready for its intended use, but no later than one year from completion of major construction activity, if the property is not occupied. We will also place redevelopment and development assets into service at this time and commence depreciation upon the substantial completion of tenant improvements and the recognition of revenue. Capitalized interest is depreciated over the useful life of the underlying assets, commencing when those assets are placed into service.

(d) Notes Receivable

We provide loans to the owners of real estate properties, which can be collateralized by interest in the real estate property. We record these loans as “Notes receivable, net” in our consolidated balance sheets. The loans are recorded net of any discount or issuance costs, which are amortized over the life of the respective note receivable using the effective interest method. We record interest earned from notes receivable and amortization of any discount or issuance costs within “Interest and other income” in our consolidated statements of operations.

We will establish a provision for anticipated credit losses associated with our notes receivable when we anticipate that we may be unable to collect any contractually due amounts. This determination is based upon such factors as delinquencies, loss experience, collateral quality and current economic or borrower conditions. Our collectability of our notes receivable may be adversely impacted by the financial stability of the Washington, D.C. region and the ability of the underlying assets to keep current tenants or attract new tenants. Estimated losses are recorded as a charge to earnings to establish an allowance for credit losses that we estimate to be adequate based on these factors. Based on the review of the above criteria, we did not record an allowance for credit losses for our notes receivable during the three months ended March 31, 2014 and 2013.

(e) Reclassifications

Certain prior year amounts have been reclassified to conform to the current year presentation, primarily as a result of reclassifying the operating results of several properties as discontinued operations. For more information, see note 7, Discontinued Operations. In April 2014, the FASB issued ASU 2014-08, which will impact the future presentation of operations and gains or losses from disposed properties. For more information, see footnote 2(f), Summary of Significant Accounting Policies – Application of New Accounting Standards.

(f) Application of New Accounting Standards

In April 2014, the FASB issued ASU 2014-08, which changes the criteria for reporting discontinued operations and requires additional disclosures about discontinued operations. ASU 2014-08 requires that an entity report as a discontinued operation only a disposal that represents a strategic shift in operations that has a major effect on its operations and financial results. ASU 2014-08 permits an entity to report a discontinued operation if it has continuing cash flows and significant continuing involvement with the disposed component after the disposal. ASU 2014-08 is effective for fiscal years, and interim periods within those fiscal years, beginning on or after December 15, 2014. Early adoption is permitted, but only for a disposal (or classification as held-for-sale) that has not been reported in financial statements previously issued or available for issuance. ASU 2014-08 must be applied prospectively. We anticipate adopting the requirements of ASU 2014-08 in the second quarter of 2014. The adoption of ASU 2014-08 will not have a material impact on our consolidated financial statements, though it will impact the extent and frequency of presenting discontinued operations within our statements of operations and footnote disclosures. All property operations that have been classified as discontinued operations will remain classified within discontinued operations in any future presentation of our statements of operations.

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Derivative Instruments - Summary of Interest Rate Swap Agreements (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014 Interest Rate Swap One [Member]	Mar. 31, 2014 Interest Rate Swap Two [Member]	Mar. 31, 2014 Interest Rate Swap Three [Member]	Mar. 31, 2014 Interest Rate Swap Four [Member]	Mar. 31, 2014 Interest Rate Swap Five [Member]	Mar. 31, 2014 Interest Rate Swap Six [Member]	Mar. 31, 2014 Interest Rate Swap Seven [Member]	Mar. 31, 2014 Interest Rate Swap Eight [Member]	Mar. 31, 2014 Interest Rate Swap Nine [Member]	Mar. 31, 2014 Interest Rate Swap Ten [Member]	Mar. 31, 2014 Interest Rate Swap Eleven [Member]	Mar. 31, 2014 Interest Rate Swap [Member]	Jan. 31, 2014 Interest Rate Swap [Member]
Derivatives, Fair Value [Line Items]
Effective Date	Jul. 31, 2011	Jul. 31, 2011	Jul. 31, 2011	Jul. 31, 2011	Sep. 30, 2011	Jan. 31, 2012	Mar. 31, 2012	Mar. 31, 2012	Mar. 31, 2012	Jun. 30, 2012	Mar. 30, 2012
Maturity Date	Jul. 31, 2016	Jul. 31, 2016	Jul. 31, 2017	Jul. 31, 2017	Jul. 31, 2018	Jul. 31, 2018	Jul. 31, 2017	Jul. 31, 2017	Jul. 31, 2018	Jul. 31, 2017	Jul. 31, 2018
Notional Amount	$ 35,000	$ 25,000	$ 30,000	$ 30,000	$ 30,000	$ 25,000	$ 25,000	$ 12,500	$ 12,500	$ 50,000	$ 25,000	$ 300,000	$ 50,000
Interest Rate Contractual Component	LIBOR	LIBOR	LIBOR	LIBOR	LIBOR	LIBOR	LIBOR	LIBOR	LIBOR	LIBOR	LIBOR
Fixed LIBOR Interest Rate	1.754%	1.763%	2.093%	2.093%	1.66%	1.394%	1.129%	1.129%	1.383%	0.955%	1.135%	1.505%

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Notes Receivable - Summary of Notes Receivable (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended	12 Months Ended
	Mar. 31, 2014	Dec. 31, 2013
Receivables with Imputed Interest [Line Items]
Face Amount	$ 63,844	$ 54,896
Unamortized Origination Fees	(62)	(200)
Balance	63,782	54,696
Notes Receivables Issued on December 2010 [Member]
Receivables with Imputed Interest [Line Items]
Face Amount	34,000	25,000
Unamortized Origination Fees		(130)
Balance	34,000	24,870
Interest Rate	9.75%	12.50%
Property	950 F Street, NW	950 F Street, NW
Notes Receivables Issued on April 2011 [Member]
Receivables with Imputed Interest [Line Items]
Face Amount	29,844	29,896
Unamortized Origination Fees	(62)	(70)
Balance	$ 29,782	$ 29,826
Interest Rate	9.00%	9.00%
Property	America's Square	America's Square

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Discontinued Operations (Tables)

3 Months Ended

Mar. 31, 2014

Discontinued Operations And Disposal Groups [Abstract]

Summary of Completed Property Dispositions

The following table is a summary of completed property dispositions whose operating results are reflected as discontinued operations in our consolidated statements of operations for the periods presented:

	Reporting Segment	Disposition Date	Property Type	Square Feet
Patrick Center(1)	Maryland	4/16/2014	Office		66,269
West Park(1)	Maryland	4/2/2014	Office		28,333
Girard Business Center and Gateway Center	Maryland	1/29/2014	Business Park and Office		341,973
Worman’s Mill Court	Maryland	11/19/2013	Office		40,099
Triangle Business Center	Maryland	9/27/2013	Business Park		74,429
4200 Tech Court	Northern Virginia	8/15/2013	Office		33,875
Industrial Portfolio(2)	Various	May/June 2013	Industrial		4,280,985
4212 Tech Court	Northern Virginia	6/5/2013	Office		32,055

⁽¹⁾  Classified as held-for-sale at March 31, 2014 and subsequently sold in April 2014.

⁽²⁾  During the second quarter of 2013, we sold 24 industrial properties, which consisted of two separate transactions. On May 7, 2013, we sold I-66 Commerce Center, a 236,000 square foot industrial property in Haymarket, Virginia. On June 18, 2013, we completed the sale of the remaining 23 industrial properties.

Net (Loss) Income from Discontinued Operations

The following table summarizes the components of net (loss) income from discontinued operations for the three months ended March 31 (dollars in thousands):

	2014			2013
Revenues	$	802		$	12,299
Net (loss) income, before taxes(1)		(1,096	)		5,281
Gain on sale of real estate property		54			—

⁽¹⁾  For the three months ended March 31, 2014, we accelerated $1.0 million of unamortized straight-line rent and deferred abatement costs related to the sale of Girard Business Center and Gateway Center.

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Investment in Affiliates (Tables)

3 Months Ended

Mar. 31, 2014

Equity Method Investments And Joint Ventures [Abstract]

Components of Investments in Affiliates

Our investment in affiliates consisted of the following (dollars in thousands):

	Reporting Segment	Ownership Interest			March 31, 2014		December 31, 2013
Prosperity Metro Plaza	Northern Virginia		51	%	$	24,527	$	24,735
1750 H Street, NW	Washington, D.C.		50	%		16,711		16,780
Aviation Business Park	Maryland		50	%		4,977		5,008
RiversPark I and II	Maryland		25	%		2,603		2,627
					$	48,818	$	49,150

Net Assets of Company's Unconsolidated Joint Ventures

The net assets of our unconsolidated joint ventures consisted of the following (dollars in thousands):

	March 31, 2014		December 31, 2013
Assets:
Rental property, net	$	193,783	$	194,240
Cash and cash equivalents		4,349		3,680
Other assets		15,205		15,585
Total assets		213,337		213,505
Liabilities:
Mortgage loans(1)(2)		105,595		106,384
Other liabilities		6,378		5,046
Total liabilities		111,973		111,430
Net assets	$	101,364	$	102,075

⁽¹⁾  Of the total mortgage debt that encumbers our unconsolidated properties, $7.0 million is recourse to us. The recourse mortgage loan was scheduled to mature in March 2014; however, the joint venture extended the loan’s maturity date to September 2014. We believe the fair value of the potential liability to us under this guaranty is inconsequential as the likelihood of our need to perform under the debt agreement is remote.

⁽²⁾  Includes the unamortized fair value adjustments recorded at acquisition upon the assumption of mortgage loans.

Results of Operations of Company's Unconsolidated Joint Ventures

The following table summarizes the results of operations of our unconsolidated joint ventures, which due to our varying ownership interests in the joint ventures and the varying operations of the joint ventures may or may not be reflective of the amounts recorded in our unaudited consolidated statements of operations (dollars in thousands):

	Three Months Ended March 31,
	2014			2013
Total revenues	$	5,752		$	6,052
Total operating expenses		(2,226	)		(1,865	)
Net operating income		3,526			4,187
Depreciation and amortization		(2,803	)		(2,939	)
Other expenses, net		(1,011	)		(1,074	)
Net (loss) income	$	(288	)	$	174

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Debt - Schedule of Borrowings (Parenthetical) (Detail)	3 Months Ended
	Mar. 31, 2014
Debt Instrument [Line Items]
Effective interest rate on the notes	5.12%
Debt instrument variable rate basis	0.15%
Mortgage Loans [Member]
Debt Instrument [Line Items]
Debt instrument, interest rate, effective percentage rate range, minimum	4.40%
Debt instrument, interest rate, effective percentage rate range, maximum	6.63%
Debt instrument maturity date	July 2022
Unsecured Term Loan, Effective Interest Rates Ranging from LIBOR Plus 1.45% to LIBOR Plus 1.90%, with Staggered Maturity Dates ranging from October 2018 to October 2020 [Member]
Debt Instrument [Line Items]
Debt instrument basis spread on variable rate, minimum	1.45%
Debt instrument basis spread on variable rate, maximum	1.90%
Debt instrument maturity date	October 2018 to October 2020
Unsecured Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Effective interest rate on the notes	1.50%
Debt instrument maturity date	October 2017

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Notes Receivable - Additional Information (Detail) (USD $)	3 Months Ended			12 Months Ended		3 Months Ended		12 Months Ended			0 Months Ended
	Mar. 31, 2014 sqft	Mar. 31, 2013 sqft	Mar. 31, 2014 Notes Receivables Issued on April 2011 [Member]	Dec. 31, 2013 Notes Receivables Issued on April 2011 [Member]	Apr. 30, 2011 Notes Receivables Issued on April 2011 [Member] sqft	Mar. 31, 2014 Notes Receivables Issued on December 2010 [Member]	Mar. 31, 2013 Notes Receivables Issued on December 2010 [Member]	Dec. 31, 2013 Notes Receivables Issued on December 2010 [Member]	Dec. 31, 2010 Notes Receivables Issued on December 2010 [Member] sqft	Jan. 10, 2014 Notes Receivables Issued on December 2010 [Member]	Jan. 10, 2014 Notes Receivables Issued on December 2010 [Member] Maximum [Member]	Jan. 10, 2014 Notes Receivables Issued on December 2010 [Member] Minimum [Member]
Receivables with Imputed Interest [Line Items]
Mezzanine loan provided to owners					$ 30,000,000				$ 25,000,000	$ 34,000,000
Area of land parcel	8,735,388	13,449,003			461,000				287,000
Maturity date of loan			May 01, 2016
Fixed interest rate on loan			9.00%	9.00%		9.75%		12.50%			12.50%	9.75%
Unsecured revolving credit facility									9,000,000
Maturity date of loan									Apr. 01, 2017
Interest income						1,500,000	1,500,000
Income from amortization of origination fees	11,000	17,000
Write-off of unamortized origination fees						$ 100,000

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Debt (Tables)

3 Months Ended

Mar. 31, 2014

Debt Disclosure [Abstract]

Schedule of Borrowings

Our borrowings consisted of the following (dollars in thousands):

	March 31, 2014		December 31, 2013
Mortgage loans, effective interest rates ranging from 4.40% to 6.63%, maturing at various dates through July 2022(1)	$	275,095	$	274,648
Unsecured term loan, effective interest rates ranging from LIBOR plus 1.45% to LIBOR plus 1.90%, with staggered maturity dates ranging from October 2018 to October 2020(1)		300,000		300,000
Unsecured revolving credit facility, effective interest rate of LIBOR plus 1.50%, maturing October 2017(1)		96,000		99,000
	$	671,095	$	673,648

⁽¹⁾ At March 31, 2014, LIBOR was 0.15%. All references to LIBOR in the condensed consolidated financial statements refer to one-month LIBOR.

Summary of Company's Mortgage Debt

The following table provides a summary of our mortgage debt at March 31, 2014 and December 31, 2013 (dollars in thousands):

Encumbered Property	Contractual Interest Rate	Effective Interest Rate			Maturity Date		March 31, 2014			December 31, 2013
Annapolis Business Center	5.74%		6.25	%		June 2014	$	8,035		$	8,076
Storey Park(1)(2)	LIBOR + 2.75%		5.80	%		October 2014		22,000			22,000
Jackson National Life Loan(3)	5.19%		5.19	%		August 2015		65,829			66,116
Hanover Business Center Building D	8.88%		6.63	%		August 2015		216			252
Chesterfield Business Center Buildings C,D,G and H	8.50%		6.63	%		August 2015		589			681
440 First Street, NW Construction Loan(1)(4)	LIBOR + 2.50%		4.78	%		May 2016		23,493			21,699
Gateway Centre Manassas Building I	7.35%		5.88	%		November 2016		588			638
Hillside I and II	5.75%		4.62	%		December 2016		13,248			13,349
Redland Corporate Center Buildings II & III	4.20%		4.64	%		November 2017		66,737			67,038
Hanover Business Center Building C	7.88%		6.63	%		December 2017		617			653
840 First Street, NE	5.72%		6.01	%		July 2020		37,000			37,151
Battlefield Corporate Center	4.26%		4.40	%		November 2020		3,812			3,851
Chesterfield Business Center Buildings A,B,E and F	7.45%		6.63	%		June 2021		1,824			1,873
Airpark Business Center	7.45%		6.63	%		June 2021		995			1,022
1211 Connecticut Avenue, NW	4.22%		4.47	%		July 2022		30,112			30,249
			5.12	%(5)				275,095			274,648
Unamortized fair value adjustments								(612	)		(663	)
Total contractual principal balance							$	274,483		$	273,985

⁽¹⁾ At March 31, 2014, LIBOR was 0.15%.

⁽²⁾  The loan incurs interest at a variable rate of LIBOR plus a spread of 2.75% (with a floor of 5.0%) and matures in October 2014, with a one-year extension at our option.

⁽³⁾  At March 31, 2014, the loan was secured by the following properties: Plaza 500, Van Buren Office Park, Rumsey Center, Snowden Center, Greenbrier Technology Center II and Norfolk Business Center. The terms of the loan allow our Company to substitute collateral, as long as certain debt-service coverage and loan-to-value ratios are maintained, or to prepay a portion of the loan, with a prepayment penalty, subject to a debt-service yield.

⁽⁴⁾  In January 2014, we borrowed an additional $1.8 million under the construction loan.

⁽⁵⁾ Weighted average interest rate on total mortgage debt.

Unsecured Term Loan

The table below shows the outstanding balances and the interest rates of the three tranches of the $300.0 million unsecured term loan at March 31, 2014 (dollars in thousands):

	Maturity Date	Amount		Interest Rate(1)
Tranche A	October 2018	$	100,000	LIBOR, plus 145 basis points
Tranche B	October 2019		100,000	LIBOR, plus 160 basis points
Tranche C	October 2020		100,000	LIBOR, plus 190 basis points
		$	300,000

⁽¹⁾  The interest rate spread is subject to change based on our maximum total indebtedness ratio. For more information, see note 8(e) Debt – Financial Covenants.

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Derivative Instruments (Tables)

3 Months Ended

Mar. 31, 2014

Derivative Instruments And Hedging Activities Disclosure [Abstract]

Summary of Interest Rate Swap Agreements

At March 31, 2014, we fixed LIBOR at a weighted average interest rate of 1.5% on $300.0 million of our variable rate debt through eleven interest rate swap agreements that are summarized below (dollars in thousands):

Effective Date	Maturity Date	Notional Amount	Interest Rate Contractual Component	Fixed LIBOR Interest Rate
July 2011	July 2016	35,000	LIBOR	1.754%
July 2011	July 2016	25,000	LIBOR	1.763%
July 2011	July 2017	30,000	LIBOR	2.093%
July 2011	July 2017	30,000	LIBOR	2.093%
September 2011	July 2018	30,000	LIBOR	1.660%
January 2012	July 2018	25,000	LIBOR	1.394%
March 2012	July 2017	25,000	LIBOR	1.129%
March 2012	July 2017	12,500	LIBOR	1.129%
March 2012	July 2018	12,500	LIBOR	1.383%
June 2012	July 2017	50,000	LIBOR	0.955%
June 2012	July 2018	25,000	LIBOR	1.135%
Total/Weighted Average		$300,000		1.505%

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Description of Business

3 Months Ended

Mar. 31, 2014

Accounting Policies [Abstract]

Description of Business

(1) Description of Business

First Potomac Realty Trust (the “Company”) is a leader in the ownership, management, development and redevelopment of office and business park properties in the greater Washington, D.C. region. The Company separates its properties into four distinct reporting segments, which it refers to as the Washington, D.C., Maryland, Northern Virginia and Southern Virginia reporting segments. The Company strategically focuses on acquiring and redeveloping properties that it believes can benefit from our intensive property management, leasing expertise, market knowledge and established relationships, and seeks to reposition these properties to increase their profitability and value. The Company’s portfolio primarily contains a mix of single-tenant and multi-tenant office properties and business parks. Office properties are single-story and multi-story buildings that are primarily for office use; and business parks contain buildings with office features combined with some industrial property space.

References in these unaudited condensed consolidated financial statements to “we,” “our,” “us,” “the Company” or “First Potomac,” refer to the Company and its subsidiaries, on a consolidated basis, unless the context indicates otherwise.

We conduct our business through First Potomac Realty Investment Limited Partnership, our operating partnership (the “Operating Partnership”). We are the sole general partner of, and, as of March 31, 2014, owned 100% of the preferred interest and 95.7% of the common interest in the Operating Partnership. The remaining common interests in the Operating Partnership, which are presented as noncontrolling interests in the Operating Partnership in the accompanying unaudited condensed consolidated financial statements, are limited partnership interests, some of which are owned by two of our executive officers who contributed properties and other assets to us upon our formation, and the remainder of which are owned by other unrelated parties.

At March 31, 2014, we wholly-owned or had a controlling interest in properties totaling 8.7 million square feet and had a noncontrolling ownership interest in properties totaling an additional 0.9 million square feet through five unconsolidated joint ventures. We also owned land that can support approximately 1.5 million square feet of additional development. Our consolidated properties were 86.0% occupied by 541 tenants at March 31, 2014. We did not include square footage that was in development or redevelopment in our occupancy calculation, which totaled 0.1 million square feet at March 31, 2014. We derive substantially all of our revenue from leases of space within our properties. The U.S. Government, our largest tenant, accounted for 48% of our outstanding accounts receivable at March 31, 2014. In April 2014, we received outstanding rent payments of $3.5 million from the U.S. Government, which accounted for 58% of their outstanding balance. We operate so as to qualify as a real estate investment trust (“REIT”) for federal income tax purposes.

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Fair Value Measurements (Tables)

3 Months Ended

Mar. 31, 2014

Fair Value Disclosures [Abstract]

Fair Value of Assets and Liabilities

In accordance with accounting provisions and the fair value hierarchy described above, the following table shows the fair value of our consolidated assets and liabilities that are measured on a non-recurring and recurring basis as of March 31, 2014 and December 31, 2013 (dollars in thousands):

	Balance at March 31, 2014		Level 1		Level 2		Level 3
Recurring Measurements:
Derivative instrument-swap assets	$	434	$	—	$	434	$	—
Derivative instrument-swap liabilities		4,284		—		4,284		—
	Balance at December 31, 2013		Level 1		Level 2		Level 3
Non-recurring Measurements:
Impaired real estate assets	$	2,909	$	—	$	2,909	$	—
Recurring Measurements:
Derivative instrument-swap assets		551		—		551		—
Derivative instrument-swap liabilities		4,576		—		4,576		—

Fair Value of Debt Instruments

The carrying value and estimated fair value of our financial assets and liabilities are as follows (dollars in thousands):

	March 31, 2014				December 31, 2013
	Carrying Value		Fair Value		Carrying Value		Fair Value
Financial Assets:
Notes receivable(1)	$	63,782	$	63,844	$	54,696	$	56,812
Financial Liabilities:
Mortgage debt	$	275,095	$	264,213	$	274,648	$	262,873
Unsecured term loan		300,000		300,000		300,000		300,000
Unsecured revolving credit facility		96,000		96,000		99,000		99,000
Total	$	671,095	$	660,213	$	673,648	$	661,873

⁽¹⁾  The principal amount of our notes receivable was $63.8 million and $54.9 million at March 31, 2014 and December 31, 2013, respectively. On January 10, 2014, we amended the 950 F Street, NW mezzanine loan and increased the outstanding balance to $34.0 million.

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Earnings Per Common Share - Anti-Dilutive Shares Not Included in Calculation of Diluted Earnings Per Share (Detail) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti-dilutive securities excluded from computation of earnings per share, Amount	14,291	13,671
Stock Option Awards [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti-dilutive securities excluded from computation of earnings per share, Amount	1,206	1,495
Non-vested Share Awards [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti-dilutive securities excluded from computation of earnings per share, Amount	414	533
Series A Preferred Shares [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti-dilutive securities excluded from computation of earnings per share, Amount	12,671	11,643

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Discontinued Operations - Net (Loss) Income from Discontinued Operations (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Discontinued Operations And Disposal Groups [Abstract]
Revenues	$ 802	$ 12,299
Net (loss) income, before taxes	(1,096)	5,281
Gain on sale of real estate property	$ 54

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Share-Based Payments - Compensation Plans Option Activity (Detail) (USD $)	3 Months Ended	12 Months Ended
	Mar. 31, 2014	Dec. 31, 2013
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Option, Beginning Balance	1,089,292
Option, Granted	135,250
Option, Exercised	(7,890)
Option, Forfeited	(24,253)
Option, Ending Balance	1,192,399	1,089,292
Option, Exercisable	559,766
Options expected to vest, subsequent to March 31, 2014	596,192
Weighted Average Exercise Price, Beginning Balance	$ 15.83
Weighted Average Exercise Price, Granted	$ 11.61
Weighted Average Exercise Price, Exercised	$ 9.98
Weighted Average Exercise Price, Forfeited	$ 14.85
Weighted Average Exercise Price, Ending Balance	$ 15.41	$ 15.83
Weighted Average Exercise Price, Exercisable	$ 16.99
Weighted Average Exercise Price, Options expected to vest, subsequent to March 31, 2014	$ 14.14
Weighted Average Remaining Contractual Term	6 years 8 months 12 days	6 years 7 months 6 days
Weighted Average Remaining Contractual Term, Exercisable	5 years
Options expected to vest, subsequent to March 31, 2014	8 years 2 months 12 days
Aggregate Intrinsic Value, Beginning Balance	$ 109,151
Aggregate Intrinsic Value, Ending Balance	350,090	109,151
Aggregate Intrinsic Value, Exercisable	146,958
Options expected to vest, subsequent to March 31, 2014	$ 146,157

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Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
Assets:
Rental property, net	$ 1,201,015	$ 1,203,299
Assets held-for-sale	12,564	45,861
Cash and cash equivalents	14,842	8,740
Escrows and reserves	3,669	7,673
Accounts and other receivables, net of allowance for doubtful accounts of $896 and $1,181, respectively	14,853	12,384
Accrued straight-line rents, net of allowance for doubtful accounts of $109 and $92, respectively	32,863	30,332
Notes receivable, net	63,782	54,696
Investment in affiliates	48,818	49,150
Deferred costs, net	42,085	43,198
Prepaid expenses and other assets	10,139	8,279
Intangible assets, net	36,706	38,848
Total assets	1,481,336	1,502,460
Liabilities:
Mortgage loans	275,095	274,648
Unsecured term loan	300,000	300,000
Unsecured revolving credit facility	96,000	99,000
Accounts payable and other liabilities	36,003	41,296
Accrued interest	1,646	1,663
Rents received in advance	5,627	6,118
Tenant security deposits	5,917	5,666
Deferred market rent, net	1,432	1,557
Total liabilities	721,720	729,948
Noncontrolling interests in the Operating Partnership	34,707	33,221
Equity:
Preferred Shares, $0.001 par value, 50,000 shares authorized;	160,000	160,000
Common shares, $0.001 par value, 150,000 shares authorized; 58,758 and 58,704 shares issued and outstanding, respectively	59	59
Additional paid-in capital	910,047	911,533
Noncontrolling interests in consolidated partnerships	870	781
Accumulated other comprehensive loss	(3,668)	(3,836)
Dividends in excess of accumulated earnings	(342,399)	(329,246)
Total equity	724,909	739,291
Total liabilities, noncontrolling interests and equity	1,481,336	1,502,460
Series A Preferred Shares [Member]
Equity:
Preferred Shares, $0.001 par value, 50,000 shares authorized;	$ 160,000	$ 160,000

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Investment in Affiliates - Components of Investments in Affiliates (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Dec. 31, 2013
Schedule of Equity Method Investments [Line Items]
Company Investment	$ 48,818	$ 49,150
Prosperity Metro Plaza [Member]
Schedule of Equity Method Investments [Line Items]
Reporting Segment	Northern Virginia
Ownership Interest	51.00%
Company Investment	24,527	24,735
1750 H Street, NW [Member]
Schedule of Equity Method Investments [Line Items]
Reporting Segment	Washington, D.C.
Ownership Interest	50.00%
Company Investment	16,711	16,780
Aviation Business Park [Member]
Schedule of Equity Method Investments [Line Items]
Reporting Segment	Maryland
Ownership Interest	50.00%
Company Investment	4,977	5,008
Rivers Park I and II [Member]
Schedule of Equity Method Investments [Line Items]
Reporting Segment	Maryland
Ownership Interest	25.00%
Company Investment	$ 2,603	$ 2,627

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Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Cash flows from operating activities:
Net (loss) income	$ (1,443)	$ 1,963
Discontinued operations:
Gain on sale of real estate property	(54)
Depreciation and amortization	455	2,922
Depreciation and amortization	15,366	14,228
Share based compensation	823	771
Bad debt expense	111	261
Amortization of deferred market rent, net	(56)	(18)
Amortization of financing costs and discounts	266	748
Equity in losses (earnings) of affiliates	227	(28)
Distributions from investments in affiliates	106	850
Changes in assets and liabilities:
Escrows and reserves	4,010	3,205
Accounts and other receivables	(2,623)	759
Accrued straight-line rents	(1,442)	(2,832)
Prepaid expenses and other assets	651	313
Tenant security deposits	58	101
Accounts payable and accrued expenses	(2,189)	(2,541)
Accrued interest	(17)	(123)
Rents received in advance	(593)	(3,533)
Deferred costs	(2,210)	(2,196)
Total adjustments	12,889	12,887
Net cash provided by operating activities	11,446	14,850
Cash flows from investing activities:
Investment in note receivable	(9,000)
Proceeds from sale of real estate assets	31,616
Principal payments from note receivable	52
Change in escrow and reserve accounts		(25)
Purchase deposit on future acquisitions	(2,000)
Additions to rental property and furniture, fixtures and equipment	(8,297)	(10,504)
Additions to development and redevelopment	(3,096)	(5,266)
Investment in affiliates		(297)
Net cash provided by (used in) investing activities	9,275	(16,092)
Cash flows from financing activities:
Financing costs	(2)	(309)
Issuance of debt	27,794	62,500
Repayments of debt	(30,296)	(41,470)
Dividends to common shareholders	(8,789)	(7,655)
Dividends to preferred shareholders	(3,100)	(3,100)
Distributions to consolidated joint venture partners	89
Distributions to noncontrolling interests	(394)	(390)
Proceeds from stock option exercises	79	86
Net cash (used in) provided by financing activities	(14,619)	9,662
Net increase in cash and cash equivalents	6,102	8,420
Cash and cash equivalents, beginning of period	8,740	9,374
Cash and cash equivalents, end of period	14,842	17,794
Cash paid for interest, net	5,373	9,865
Non-cash investing and financing activities:
Value of common shares issued to settle federal income tax obligations	383	448
Change in fair value of the outstanding common Operating Partnership units	2,027	5,067
Issuance of common Operating Partnership units in connection with the acquisition of real estate	40
Changes in accruals:
Additions to rental property and furniture, fixtures and equipment	371	(2,012)
Additions to development and redevelopment	$ (1,768)	$ (3,896)

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Debt - Additional Information (Detail) (USD $)	0 Months Ended	1 Months Ended	3 Months Ended
	Jun. 05, 2013	Jan. 31, 2014	Mar. 31, 2014 Interest_Rate_Swaps	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2013
Debt Instrument [Line Items]
Borrowing capacity of a construction loan	$ 43,500,000
Amount borrowed		1,800,000		21,700,000
Loan variable interest rate	2.50%		2.75%
Maturity date	2016-05
Maturity Period	1 year
Outstanding balance of three tranches			300,000,000			300,000,000
Unsecured revolving credit facility			96,000,000
Increase in fund due to borrowings of revolving credit facility			9,000,000
Proceed to pay loan		31,600,000	29,000,000
Weighted average borrowings outstanding on unsecured revolving credit facility			97,100,000		221,900,000
Weighted average interest rate			1.70%		2.90%
Maximum outstanding borrowings			112,000,000		230,000,000
Weighted average interest rate			1.70%
Available capacity on the unsecured revolving credit facility			120,800,000
Line of credit facility basis spread on variable rate basis			0.15%
Annual commitment fee			0.25%
Number of interest rate swap agreements			11
Term Loan [Member]
Debt Instrument [Line Items]
Outstanding balance of three tranches			300,000,000
Number of tranches			3
Unsecured Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Unsecured revolving credit facility			26,000,000
440 First Street, NW Construction Loan [Member]
Debt Instrument [Line Items]
Percentage of outstanding principal			50.00%
Interest Rate Swap [Member]
Debt Instrument [Line Items]
Amount on variable rate debt		$ 50,000,000	$ 300,000,000
Fixed effective interest rate			1.505%

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Segment Information (Tables)

3 Months Ended

Mar. 31, 2014

Segment Reporting [Abstract]

Summary of Segment Information

The results of operations of our four reporting segments for the three months ended March 31, 2014 and 2013 are as follows (dollars in thousands):

	Three Months Ended March 31, 2014
	Washington, D.C.			Maryland			Northern Virginia			Southern Virginia			Consolidated
Number of buildings		4	(1)		44			51			38			137
Square feet		522,560	(1)		2,274,813			3,086,550			2,851,465			8,735,388
Total revenues	$	7,140		$	11,445		$	13,666		$	9,163		$	41,414
Property operating expense		(2,187	)		(3,746	)		(3,976	)		(2,989	)		(12,898	)
Real estate taxes and insurance		(1,054	)		(1,004	)		(1,524	)		(687	)		(4,269	)
Total property operating income	$	3,899		$	6,695		$	8,166		$	5,487			24,247
Depreciation and amortization expense														(15,104	)
General and administrative														(5,196	)
Acquisition costs														(68	)
Other expenses, net														(4,280	)
Loss from discontinued operations														(1,042	)
Net loss													$	(1,443	)
Total assets(3)(4)	$	343,804		$	393,919		$	421,556		$	230,384		$	1,481,336
Capital expenditures(5)	$	6,481		$	2,390		$	822		$	1,423		$	11,393
	Three Months Ended March 31, 2013
	Washington, D.C.			Maryland			Northern Virginia			Southern Virginia			Consolidated
Number of buildings		4	(2)		62			56			57			179
Square feet		531,714	(2)		3,779,047			3,653,645			5,484,597			13,449,003
Total revenues	$	7,616		$	10,216		$	12,717		$	8,609		$	39,158
Property operating expense		(1,893	)		(2,489	)		(3,242	)		(2,687	)		(10,311	)
Real estate taxes and insurance		(1,349	)		(808	)		(1,690	)		(664	)		(4,511	)
Total property operating income	$	4,374		$	6,919		$	7,785		$	5,258			24,336
Depreciation and amortization expense														(13,987	)
General and administrative														(5,267	)
Other expenses, net														(8,400	)
Income from discontinued operations														5,281
Net income													$	1,963
Total assets(3)(4)	$	324,064		$	487,545		$	460,996		$	362,239		$	1,718,364
Capital expenditures(5)	$	5,969		$	2,823		$	3,617		$	2,963		$	15,770

⁽¹⁾ Includes occupied space at 440 First Street, NW and excludes Storey Park, which was placed in development in the third quarter of 2013.

⁽²⁾ Excludes 440 First Street, NW, which has been in redevelopment since its acquisition in 2010.

⁽³⁾  Total assets include our investment in properties that are owned through joint ventures that are not consolidated within our condensed consolidated financial statements. For more information on our unconsolidated investments, including location within our reportable segments, see footnote 6, Investment in Affiliates.

⁽⁴⁾  Corporate assets not allocated to any of our reportable segments totaled $91,673 and $83,520 at March 31, 2014 and 2013, respectively.

⁽⁵⁾ Capital expenditures for corporate assets not allocated to any of our reportable segments totaled $277 and $398 at March 31, 2014 and 2013, respectively.

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Fair Value Measurements - Fair Value of Debt Instruments (Detail) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
Financial Assets:
Carrying value of notes receivable	$ 63,782	$ 54,696
Fair value of notes receivable	63,800	54,900
Fair Value [Member]
Financial Assets:
Fair value of notes receivable	63,844	56,812
Financial Liabilities:
Fair value of the debt instruments	660,213	661,873
Fair Value [Member] | Mortgage Debt [Member]
Financial Liabilities:
Fair value of the debt instruments	264,213	262,873
Fair Value [Member] | Unsecured Term Loan [Member]
Financial Liabilities:
Fair value of the debt instruments	300,000	300,000
Fair Value [Member] | Unsecured Revolving Credit Facility [Member]
Financial Liabilities:
Fair value of the debt instruments	96,000	99,000
Carrying Value [Member]
Financial Assets:
Carrying value of notes receivable	63,782	54,696
Financial Liabilities:
Carrying value of the debt instruments	671,095	673,648
Carrying Value [Member] | Mortgage Debt [Member]
Financial Liabilities:
Carrying value of the debt instruments	275,095	274,648
Carrying Value [Member] | Unsecured Term Loan [Member]
Financial Liabilities:
Carrying value of the debt instruments	300,000	300,000
Carrying Value [Member] | Unsecured Revolving Credit Facility [Member]
Financial Liabilities:
Carrying value of the debt instruments	$ 96,000	$ 99,000

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Subsequent Event

3 Months Ended

Mar. 31, 2014

Subsequent Events [Abstract]

Subsequent Event

(15) Subsequent Event

On April 8, 2014, we acquired 1401 K Street, NW, a twelve-story, 117,000 square foot office building in Washington, D.C. for $58.0 million. The property is currently 88% leased to 22 tenants. The acquisition was funded with the assumption of a $37.3 million mortgage loan, a $20.0 million draw under our unsecured revolving credit facility and available cash.

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Description of Business - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2014 JointVenture Person Property sqft Executives	Mar. 31, 2013 sqft
Real Estate Properties [Line Items]
Number of separate reporting segments of properties	4
Interest in Operating Partnership	95.70%
Operating Partnership in preferred	100.00%
Number of officers who owned limited partnership interests	2
Area of land parcel	8,735,388	13,449,003
Unconsolidated joint ventures	5
Square footage of land for additional development	1,500,000
Square footage in development or redevelopment not included on occupancy calculation	100,000
Occupancy rate in the Company's consolidated properties	86.00%
Number of tenants representing the 85.8% occupancy rate	541
Percentage of outstanding account receivables accounted by government	48.00%
Receipt of outstanding rent payments	$ 3.5
Percentage of accounted outstanding balance	58.00%
Wholly-owned Properties [Member]
Real Estate Properties [Line Items]
Area of land parcel	8,700,000
Unconsolidated Properties [Member]
Real Estate Properties [Line Items]
Area of land parcel	900,000

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Summary of Significant Accounting Policies (Tables)

3 Months Ended

Mar. 31, 2014

Accounting Policies [Abstract]

Estimated Useful Lives of Company's Assets, by Class

The estimated useful lives of our assets, by class, are as follows:

Buildings	39 years
Building improvements	5 to 20 years
Furniture, fixtures and equipment	5 to 15 years
Lease related intangible assets	The term of the related lease
Tenant improvements	Shorter of the useful life of the asset or the term of the related lease

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Equity - Company's Allocation Between Non-controlling Interests (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Noncontrolling Interest [Line Items]
Beginning Balance	$ 739,291	$ 662,493
Net income (loss)	(1,248)	2,017
Changes in ownership, net	(1,413)	(4,632)
Distributions to owners	(11,889)	(10,755)
Other comprehensive income	168	1,041
Ending Balance	724,909	650,164
Beginning Balance, Redeemable noncontrolling interests	33,221	34,367
Net income (loss), Redeemable noncontrolling interests	(195)	(54)
Change in ownership, net, Redeemable noncontrolling interests	2,067	5,067
Distributions to owners, Redeemable noncontrolling interests	(393)	(390)
Other comprehensive income, Redeemable noncontrolling interests	7	52
Ending Balance, Redeemable noncontrolling interests	34,707	39,042
First Potomac Realty Trust [Member]
Noncontrolling Interest [Line Items]
Beginning Balance	738,510	658,765
Net income (loss)	(1,248)	2,022
Changes in ownership, net	(1,502)	(4,632)
Distributions to owners	(11,889)	(10,755)
Other comprehensive income	168	1,041
Ending Balance	724,039	646,441
Non-redeemable Noncontrolling Interests [Member]
Noncontrolling Interest [Line Items]
Beginning Balance	781	3,728
Net income (loss)		(5)
Changes in ownership, net	89
Ending Balance	$ 870	$ 3,723

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Consolidated Statements of Cash Flows (Parenthetical) (USD $)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Capitalized interest on indebtedness paid in cash	$ 800,000	$ 300,000
Surrendered common shares to satisfy statutory minimum federal income tax obligations	400,000	400,000
Change in redemption value, noncontrolling interest	5,300,000	8,600,000
Furniture and Fixtures [Member]
Accrued capital expenditure	6,600,000	9,100,000
Development and Redevelopment [Member]
Accrued capital expenditure	1,900,000	2,600,000
840 First Street, NE [Member]
Operating Partnership units issued for acquisition	3,125
Operating Partnership units fair valued	$ 40,000

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Consolidated Balance Sheets (Parenthetical) (USD $) In Thousands, except Per Share data, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
Statement Of Financial Position [Abstract]
Allowance for doubtful accounts, accounts receivable and other	$ 896	$ 1,181
Allowance for doubtful accounts, Accrued straight-line rents	$ 109	$ 92
Preferred stock, par value	$ 0.001	$ 0.001
Preferred stock, shares authorized	50,000	50,000
Series A Preferred Shares, liquidation preference	$ 25	$ 25
Series A Preferred Shares, shares issued	6,400	6,400
Series A Preferred Shares, shares outstanding	6,400	6,400
Common stock, par value	$ 0.001	$ 0.001
Common stock, shares authorized	150,000	150,000
Common stock, shares issued	58,758	58,704
Common stock, shares outstanding	58,758	58,704

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Fair Value Measurements

3 Months Ended

Mar. 31, 2014

Fair Value Disclosures [Abstract]

Fair Value Measurements

(10) Fair Value Measurements

We apply GAAP that outlines a valuation framework and creates a fair value hierarchy, which distinguishes between assumptions based on market data (observable inputs) and a reporting entity’s own assumptions about market data (unobservable inputs). The required disclosures increase the consistency and comparability of fair value measurements and the related disclosures. Fair value is identified, under the standard, as the price that would be received to sell an asset or paid to transfer a liability between willing third parties at the measurement date (an exit price). In accordance with GAAP, certain assets and liabilities must be measured at fair value, and we provide the necessary disclosures that are required for items measured at fair value as outlined in the accounting requirements regarding fair value.

Financial assets and liabilities, as well as those non-financial assets and liabilities requiring fair value measurement, are measured using inputs from three levels of the fair value hierarchy.

The three levels are as follows:

Level 1—Inputs are quoted prices (unadjusted) in active markets for identical assets or liabilities that we have the ability to access at the measurement date. An active market is defined as a market in which transactions for the assets or liabilities occur with sufficient frequency and volume to provide pricing information on an ongoing basis.

Level 2—Inputs include quoted prices for similar assets and liabilities in active markets, quoted prices for identical or similar assets or liabilities in markets that are not active (markets with few transactions), inputs other than quoted prices that are observable for the asset or liability (i.e., interest rates, yield curves, etc.), and inputs derived principally from or corroborated by observable market data correlation or other means (market corroborated inputs).

Level 3—Unobservable inputs, only used to the extent that observable inputs are not available, reflect our assumptions about the pricing of an asset or liability.

In accordance with accounting provisions and the fair value hierarchy described above, the following table shows the fair value of our consolidated assets and liabilities that are measured on a non-recurring and recurring basis as of March 31, 2014 and December 31, 2013 (dollars in thousands):

	Balance at March 31, 2014		Level 1		Level 2		Level 3
Recurring Measurements:
Derivative instrument-swap assets	$	434	$	—	$	434	$	—
Derivative instrument-swap liabilities		4,284		—		4,284		—
	Balance at December 31, 2013		Level 1		Level 2		Level 3
Non-recurring Measurements:
Impaired real estate assets	$	2,909	$	—	$	2,909	$	—
Recurring Measurements:
Derivative instrument-swap assets		551		—		551		—
Derivative instrument-swap liabilities		4,576		—		4,576		—

We did not re-measure or complete any transactions involving non-financial assets or non-financial liabilities that are measured at fair value on a recurring basis during the three months ended March 31, 2014 and 2013. Also, no transfers into or out of fair value measurement levels for assets or liabilities that are measured on a recurring basis occurred during the three months ended March 31, 2014 and 2013.

Impairment of Real Estate Assets

We regularly review market conditions for possible impairment of a property’s carrying value. When circumstances such as adverse market conditions, changes in management’s intended holding period or potential sale to a third party indicate a possible impairment of a property, an impairment analysis is performed.

In April 2014, we sold our West Park property, which is located in our Maryland reporting segment. Based on the anticipated sales price, we recorded an impairment charge of $2.2 million in the fourth quarter of 2013. The property was classified as held-for-sale at both March 31, 2014 and December 31, 2013.

Interest Rate Derivatives

The interest rate derivatives are fair valued based on prevailing market yield curves on the measurement date and also take into consideration the credit valuation adjustment of the counter-party in determining the fair value of counterparty credit risk associated with our interest rate swap agreements. We use a third party to assist in valuing our interest rate swap agreements. A daily “snapshot” of the market is taken to obtain close of business rates. The snapshot includes over 7,500 rates including LIBOR fixings, Eurodollar futures, swap rates, exchange rates, treasuries, etc. This market data is obtained via direct feeds from Bloomberg and Reuters and from Inter-Dealer Brokers. The selected rates are compared to their historical values. Any rate that has changed by more than normal mean and related standard deviation would be considered an outlier and flagged for further investigation. The rates are then compiled through a valuation process that generates daily valuations, which are used to value our interest rate swap agreements. Our interest rate swap derivatives are effective cash flow hedges and the effective portion of the change in fair value is recorded in the equity section of our consolidated balance sheets as “Accumulated other comprehensive loss.”

Financial Instruments

The carrying amounts of cash equivalents, accounts and other receivables, accounts payable and other liabilities, with the exception of any items listed above, approximate their fair values due to their short-term maturities. We determine the fair value of our notes receivable and debt instruments by discounting future contractual principal and interest payments using prevailing market rates for securities with similar terms and characteristics at the balance sheet date. We deem the fair value measurement of our debt instruments as a Level 2 measurement as we use quoted interest rates for similar debt instruments to value our debt instruments. We also use quoted market interest rates to value our notes receivable, which we consider a Level 2 measurement as we do not believe notes receivable trade in an active market.

The carrying value and estimated fair value of our financial assets and liabilities are as follows (dollars in thousands):

	March 31, 2014				December 31, 2013
	Carrying Value		Fair Value		Carrying Value		Fair Value
Financial Assets:
Notes receivable(1)	$	63,782	$	63,844	$	54,696	$	56,812
Financial Liabilities:
Mortgage debt	$	275,095	$	264,213	$	274,648	$	262,873
Unsecured term loan		300,000		300,000		300,000		300,000
Unsecured revolving credit facility		96,000		96,000		99,000		99,000
Total	$	671,095	$	660,213	$	673,648	$	661,873

⁽¹⁾  The principal amount of our notes receivable was $63.8 million and $54.9 million at March 31, 2014 and December 31, 2013, respectively. On January 10, 2014, we amended the 950 F Street, NW mezzanine loan and increased the outstanding balance to $34.0 million.

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Document and Entity Information	3 Months Ended
	Mar. 31, 2014	Apr. 29, 2014
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Mar. 31, 2014
Document Fiscal Year Focus	2014
Document Fiscal Period Focus	Q1
Entity Registrant Name	FIRST POTOMAC REALTY TRUST
Entity Central Index Key	0001254595
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		58,758,833

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Equity

3 Months Ended

Mar. 31, 2014

Equity [Abstract]

Equity

(11) Equity

On January 29, 2014, we declared a dividend of $0.15 per common share, equating to an annualized dividend of $0.60 per common share. The dividend was paid on February 18, 2014 to common shareholders of record as of February 10, 2014. We also declared a dividend of $0.484375 per share on our Series A Preferred Shares. The dividend was paid on February 18, 2014 to preferred shareholders of record as of February 10, 2014.

On April 22, 2014, we declared a dividend of $0.15 per common share, equating to an annualized dividend of $0.60 per common share. The dividend will be paid on May 15, 2014 to common shareholders of record as of May 6, 2014. We also declared a dividend of $0.484375 per share on our Series A Preferred Shares. The dividend will be paid on May 15, 2014 to preferred shareholders of record as of May 6, 2014. Dividends on all non-vested share awards are recorded as a reduction of shareholders’ equity. For each dividend paid by us on our common and preferred shares, the Operating Partnership distributes an equivalent distribution on our common and preferred Operating Partnership units, respectively.

Our unsecured revolving credit facility, unsecured term loan and the Construction Loan contain certain restrictions that include, among other things, requirements to maintain specified coverage ratios and other financial covenants, which may limit our Company’s ability to make distributions to our common and preferred shareholders. Further, distributions with respect to our common shares are subject to our ability to first satisfy our obligations to pay distributions to the holders of our Series A Preferred Shares.

As a result of the redemption feature of the Operating Partnership units, the noncontrolling interests associated with the Operating Partnership are recorded outside of permanent equity. Our equity and redeemable noncontrolling interests are as follows (dollars in thousands):

	First Potomac Realty Trust			Non-redeemable noncontrolling interests		Total Equity			Redeemable noncontrolling interests
Balance at December 31, 2013	$	738,510		$	781	$	739,291		$	33,221
Net loss		(1,248	)		—		(1,248	)		(195	)
Changes in ownership, net		(1,502	)		89		(1,413	)		2,067
Distributions to owners		(11,889	)		—		(11,889	)		(393	)
Other comprehensive income		168			—		168			7
Balance at March 31, 2014	$	724,039		$	870	$	724,909		$	34,707

	First Potomac Realty Trust			Non-redeemable noncontrolling interests			Total Equity			Redeemable noncontrolling interests
Balance at December 31, 2012	$	658,765		$	3,728		$	662,493		$	34,367
Net income (loss)		2,022			(5	)		2,017			(54	)
Changes in ownership, net		(4,632	)		—			(4,632	)		5,067
Distributions to owners		(10,755	)		—			(10,755	)		(390	)
Other comprehensive income		1,041			—			1,041			52
Balance at March 31, 2013	$	646,441		$	3,723		$	650,164		$	39,042

A summary of our accumulated other comprehensive loss is as follows (dollars in thousands):

	2014			2013
Beginning balance at January1,	$	(3,836	)	$	(10,917	)
Net gain on derivative instruments		175			1,093
Net gain attributable to noncontrolling interests		(7	)		(52	)
Ending balance at March 31,	$	(3,668	)	$	(9,876	)

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Consolidated Statements of Operations (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Revenues:
Rental	$ 31,940	$ 30,693
Tenant reimbursements and other	9,474	8,465
Total revenues	41,414	39,158
Operating expenses:
Property operating	12,898	10,311
Real estate taxes and insurance	4,269	4,511
General and administrative	5,196	5,267
Acquisition costs	68
Depreciation and amortization	15,104	13,987
Total operating expenses	37,535	34,076
Operating income	3,879	5,082
Other expenses, net:
Interest expense	5,812	9,958
Interest and other income	(1,759)	(1,530)
Equity in losses (earnings) of affiliates	227	(28)
Total other expenses, net	4,280	8,400
Loss from continuing operations	(401)	(3,318)
Discontinued operations:
(Loss) income from operations	(1,096)	5,281
Gain on sale of real estate property	54
(Loss) income from discontinued operations	(1,042)	5,281
Net (loss) income	(1,443)	1,963
Less: Net loss attributable to noncontrolling interests	195	59
Net (loss) income attributable to First Potomac Realty Trust	(1,248)	2,022
Less: Dividends on preferred shares	(3,100)	(3,100)
Net loss attributable to common shareholders	$ (4,348)	$ (1,078)
Basic and diluted earnings per common share:
Loss from continuing operations	$ (0.06)	$ (0.12)
(Loss) income from discontinued operations	$ (0.02)	$ 0.10
Net loss	$ (0.08)	$ (0.02)
Weighted average common shares outstanding:
Basic and diluted	58,097	50,404

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Notes Receivable

3 Months Ended

Mar. 31, 2014

Receivables [Abstract]

Notes Receivable

(5) Notes Receivable

Below is a summary of our notes receivable (dollars in thousands):

Balance at March 31, 2014
Face Amount		Unamortized Origination Fees			Balance		Interest Rate			Property
$	34,000	$	—		$	34,000		9.75	%		950 F Street, NW
	29,844		(62	)		29,782		9.0	%		America’s Square
$	63,844	$	(62	)	$	63,782

Balance at December 31, 2013
Face Amount		Unamortized Origination Fees			Balance		Interest Rate			Property
$	25,000	$	(130	)	$	24,870		12.5	%		950 F Street, NW
	29,896		(70	)		29,826		9.0	%		America’s Square
$	54,896	$	(200	)	$	54,696

In April 2011, we provided a $30.0 million mezzanine loan to the owners of America’s Square, a 461,000 square-foot office complex located in Washington, D.C. that is secured by a portion of the owners’ interest in the property. The loan is repayable in full at any time, subject to yield maintenance. The loan matures on May 1, 2016 and required monthly interest-only payments until May 2013, at which time the loan began requiring monthly principal and interest payments through its maturity date. The interest rate on the loan is constant throughout the life of the loan.

In December 2010, we provided a $25.0 million mezzanine loan to the owners of 950 F Street, NW, a ten-story, 287,000 square-foot office/retail building located in Washington, D.C. that is secured by a portion of the owners’ interest in the property. The loan requires monthly interest-only payments with a constant interest rate over the life of the loan. The loan was pre-payable without penalty prior to December 21, 2013. On January 10, 2014, we amended the loan to increase the outstanding balance to $34.0 million and reduce the fixed interest rate from 12.5% to 9.75%. The amended mezzanine loan matures on April 1, 2017 and is repayable in full on or after December 21, 2015. The $9.0 million increase in the loan was provided by a draw under our unsecured revolving credit facility.

During both the three months ended March 31, 2014 and 2013, we recorded interest income of $1.5 million related to our notes receivable, which is included within “Interest and other income” in our consolidated statements of operations.

We recorded income from the amortization of origination fees of $11 thousand and $17 thousand for the three months ended March 31, 2014 and 2013, respectively. During the first quarter of 2014, we wrote-off $0.1 million of unamortized fees related to the original 950 F Street, NW mezzanine loan. The amortization and write-off of unamortized fees are recorded within “Interest and other income” in our consolidated statements of operations.

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Rental Property

3 Months Ended

Mar. 31, 2014

Text Block [Abstract]

Rental Property

(4) Rental Property

Rental property represents buildings and related improvements, net of accumulated depreciation, and developable land that are wholly-owned or owned by an entity in which we have a controlling interest. All of our rental properties are located within the greater Washington, D.C. region. Rental property, excluding properties classified as held-for-sale, consists of the following (dollars in thousands):

	March 31, 2014			December 31, 2013
Land and land improvements	$	294,819		$	294,753
Buildings and improvements		867,480			868,027
Construction in process		99,712			93,269
Tenant improvements		148,418			146,176
Furniture, fixtures and equipment		5,098			5,047
		1,415,527			1,407,272
Less: accumulated depreciation		(214,512	)		(203,973	)
	$	1,201,015		$	1,203,299

Development and Redevelopment Activity

We construct office buildings and/or business parks on a build-to-suit basis or with the intent to lease upon completion of construction. We own developable land that can accommodate 1.5 million square feet of additional building space, of which, 0.7 million is located in the Washington, D.C. reporting segment, 0.1 million in the Maryland reporting segment, 0.6 million in the Northern Virginia reporting segment and 0.1 million in the Southern Virginia reporting segment.

On August 4, 2011, we formed a joint venture, in which we have a 97% interest, with an affiliate of Perseus Realty, LLC to acquire Storey Park in our Washington, D.C. reporting segment. At the time, the site was leased to Greyhound Lines, Inc. (“Greyhound”), which subsequently relocated its operations. Greyhound’s lease expired on August 31, 2013, at which time the property was placed into development. The joint venture anticipates developing a mixed-use project on the 1.6 acre site, which can accommodate up to 712,000 square feet of office space. At March 31, 2014, the total investment in the development project was $51.2 million, which included the original cost basis of the property of $43.3 million.

On December 28, 2010, we acquired 440 First Street, NW, a vacant eight-story office building in our Washington, D.C. reporting segment. In October 2013, we substantially completed the redevelopment of the 139,000 square foot property. During 2013, we placed in-service 19,763 square feet of office space at the property. At March 31, 2014, our total investment in the redevelopment project was $54.3 million, which included the original cost basis of the property of $23.6 million.

We will place completed construction activities in service upon the earlier of a tenant taking occupancy or twelve months from substantial completion. At March 31, 2014, we had 119,510 square feet of redevelopment efforts at 440 First Street, NW that have yet to be placed-in service. At March 31, 2014, we had no completed development efforts that have yet to be placed in service. We did not place any development or redevelopment efforts into service during the first quarter of 2014.

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Summary of Significant Accounting Policies (Policies)

3 Months Ended

Mar. 31, 2014

Accounting Policies [Abstract]

Principles of Consolidation

(a) Principles of Consolidation

Our unaudited condensed consolidated financial statements include the accounts of our Company and the accounts of the Operating Partnership and the subsidiaries in which we or Operating Partnership has a controlling interest, which includes First Potomac Management LLC, a wholly-owned subsidiary that manages the majority of our properties. All intercompany balances and transactions have been eliminated in consolidation.

We have condensed or omitted certain information and note disclosures normally included in financial statements presented in accordance with U.S. generally accepted accounting principles (“GAAP”) in the accompanying unaudited condensed consolidated financial statements. We believe the disclosures made are adequate to prevent the information presented from being misleading. However, the unaudited condensed consolidated financial statements should be read in conjunction with the consolidated financial statements and notes thereto included in our annual report on Form 10-K for the year ended December 31, 2013 and as updated from time to time in other filings with the U.S. Securities and Exchange Commission (the “SEC”).

In our opinion, the accompanying unaudited condensed consolidated financial statements reflect all adjustments, consisting of normal recurring adjustments and accruals necessary to present fairly our financial position as of March 31, 2014 and the results of our operations, our comprehensive (loss) income and our cash flows for the three months ended March 31, 2014 and 2013. Interim results are not necessarily indicative of full-year performance due, in part, to the timing of transactions and the impact of acquisitions and dispositions throughout the year as well as the seasonality of certain operating expenses such as utilities expense and snow and ice removal costs.

Use of Estimates

(b) Use of Estimates

The preparation of condensed consolidated financial statements in conformity with GAAP requires our management team to make a number of estimates and assumptions relating to the reported amounts of assets and liabilities and the disclosure of contingent assets and liabilities at the date of the condensed consolidated financial statements and the reported amounts of revenues and expenses during the period. Estimates include the amount of accounts receivable that may be uncollectible; recoverability of notes receivable, future cash flows, discount and capitalization rate assumptions used to fair value acquired properties and to test impairment of certain long-lived assets and goodwill; derivative valuations; market lease rates, lease-up periods, leasing and tenant improvement costs used to fair value intangible assets acquired and probability weighted cash flow analysis used to fair value contingent liabilities. Actual results could differ from those estimates.

Rental Property

(c) Rental Property

Rental property is initially recorded at fair value, if acquired in a business combination, or initial cost when constructed or acquired in an asset purchase, less accumulated depreciation and, when appropriate, impairment losses. Improvements and replacements are capitalized at cost when they extend the useful life, increase capacity or improve the efficiency of the asset. Repairs and maintenance are charged to expense when incurred. Depreciation and amortization are recorded on a straight-line basis over the estimated useful lives of the assets. The estimated useful lives of our assets, by class, are as follows:

Buildings	39 years
Building improvements	5 to 20 years
Furniture, fixtures and equipment	5 to 15 years
Lease related intangible assets	The term of the related lease
Tenant improvements	Shorter of the useful life of the asset or the term of the related lease

We regularly review market conditions for possible impairment of a property’s carrying value. When circumstances such as adverse market conditions, changes in management’s intended holding period or potential sale to a third party indicate a possible impairment of the carrying value of a property, an impairment analysis is performed. We assess potential impairments based on an estimate of the future undiscounted cash flows (excluding interest charges) expected to result from the property’s use and eventual disposition. This estimate is based on projections of future revenues, expenses, capital improvement costs to maintain the operating capacity, expected holding periods and capitalization rates. These cash flows consider factors such as expected market trends and leasing prospects, as well as the effects of leasing demand, competition and other factors. If impairment exists due to the inability to recover the carrying value of a real estate investment based on forecasted undiscounted cash flows, an impairment loss is recorded to the extent that the carrying value exceeds the estimated fair value of the property. We are required to make estimates as to whether there are impairments in the carrying values of our investments in real estate. Further, we will record an impairment loss if we expect to dispose of a property, in the near term, at a price below carrying value. In such an event, we will record an impairment loss based on the difference between a property’s carrying value and our projected sales price less any estimated costs to sell.

We will classify a building as held-for-sale in accordance with GAAP in the period in which we have made the decision to dispose of the building, our Board of Trustees or a designated delegate has approved the sale, there is a high likelihood a binding agreement to purchase the property will be signed under which the buyer will be required to commit a significant amount of nonrefundable cash and no significant financing contingencies exist that could cause the transaction not to be completed in a timely manner. If these criteria are met, we will cease depreciation of the asset. We will classify any impairment loss, together with the building’s operating results, as discontinued operations in our consolidated statements of operations for all periods presented and classify the assets and related liabilities as held-for-sale in our consolidated balance sheets in the period the held-for-sale criteria are met. Interest expense is reclassified to discontinued operations only to the extent the held-for-sale property is secured by specific mortgage debt and the mortgage debt will not be assigned to another property owned by us after the disposition. However, in April 2014, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update No. 2014-08, Reporting Discontinued Operations and Disclosures of Disposals of Components of an Entity (“ASU 2014-08”), which will impact the future presentation of operations and gain or losses from disposed properties. For more information, see footnote 2(f), Summary of Significant Accounting Policies – Application of New Accounting Standards.

We recognize the fair value, if sufficient information exists to reasonably estimate the fair value, of any liability for conditional asset retirement obligations when assumed or incurred, which is generally upon acquisition, construction, development or redevelopment and/or through the normal operation of the asset.

We capitalize interest costs incurred on qualifying expenditures for real estate assets under development or redevelopment, which include our investment in assets owned through unconsolidated joint ventures that are under development or redevelopment, while being readied for their intended use in accordance with accounting requirements regarding capitalization of interest. We will capitalize interest when qualifying expenditures for the asset have been made, activities necessary to get the asset ready for its intended use are in progress and interest costs are being incurred. Capitalized interest also includes interest associated with expenditures incurred to acquire developable land while development activities are in progress. We also capitalize direct compensation costs of our construction personnel who manage the development and redevelopment projects, but only to the extent the employee’s time can be allocated to a project. Any portion of construction management costs not directly attributable to a specific project are recognized as general and administrative expense in the period incurred. We do not capitalize any other general and administrative costs such as office supplies, office rent expense or an overhead allocation to our development or redevelopment projects. Capitalized compensation costs were immaterial for the three months ended March 31, 2014 and 2013. Capitalization of interest will end when the asset is substantially complete and ready for its intended use, but no later than one year from completion of major construction activity, if the property is not occupied. We will also place redevelopment and development assets into service at this time and commence depreciation upon the substantial completion of tenant improvements and the recognition of revenue. Capitalized interest is depreciated over the useful life of the underlying assets, commencing when those assets are placed into service.

Notes Receivable

(d) Notes Receivable

We provide loans to the owners of real estate properties, which can be collateralized by interest in the real estate property. We record these loans as “Notes receivable, net” in our consolidated balance sheets. The loans are recorded net of any discount or issuance costs, which are amortized over the life of the respective note receivable using the effective interest method. We record interest earned from notes receivable and amortization of any discount or issuance costs within “Interest and other income” in our consolidated statements of operations.

We will establish a provision for anticipated credit losses associated with our notes receivable when we anticipate that we may be unable to collect any contractually due amounts. This determination is based upon such factors as delinquencies, loss experience, collateral quality and current economic or borrower conditions. Our collectability of our notes receivable may be adversely impacted by the financial stability of the Washington, D.C. region and the ability of the underlying assets to keep current tenants or attract new tenants. Estimated losses are recorded as a charge to earnings to establish an allowance for credit losses that we estimate to be adequate based on these factors. Based on the review of the above criteria, we did not record an allowance for credit losses for our notes receivable during the three months ended March 31, 2014 and 2013.

Reclassifications

(e) Reclassifications

Certain prior year amounts have been reclassified to conform to the current year presentation, primarily as a result of reclassifying the operating results of several properties as discontinued operations. For more information, see note 7, Discontinued Operations. In April 2014, the FASB issued ASU 2014-08, which will impact the future presentation of operations and gains or losses from disposed properties. For more information, see footnote 2(f), Summary of Significant Accounting Policies – Application of New Accounting Standards.

Application of New Accounting Standards

(f) Application of New Accounting Standards

In April 2014, the FASB issued ASU 2014-08, which changes the criteria for reporting discontinued operations and requires additional disclosures about discontinued operations. ASU 2014-08 requires that an entity report as a discontinued operation only a disposal that represents a strategic shift in operations that has a major effect on its operations and financial results. ASU 2014-08 permits an entity to report a discontinued operation if it has continuing cash flows and significant continuing involvement with the disposed component after the disposal. ASU 2014-08 is effective for fiscal years, and interim periods within those fiscal years, beginning on or after December 15, 2014. Early adoption is permitted, but only for a disposal (or classification as held-for-sale) that has not been reported in financial statements previously issued or available for issuance. ASU 2014-08 must be applied prospectively. We anticipate adopting the requirements of ASU 2014-08 in the second quarter of 2014. The adoption of ASU 2014-08 will not have a material impact on our consolidated financial statements, though it will impact the extent and frequency of presenting discontinued operations within our statements of operations and footnote disclosures. All property operations that have been classified as discontinued operations will remain classified within discontinued operations in any future presentation of our statements of operations.

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Noncontrolling Interests

3 Months Ended

Mar. 31, 2014

Noncontrolling Interest [Abstract]

Noncontrolling Interests

(12) Noncontrolling Interests

(a) Noncontrolling Interests in the Operating Partnership

Noncontrolling interests relate to the common interests in the Operating Partnership not owned by us. Interests in the Operating Partnership are owned by limited partners who contributed buildings and other assets to the Operating Partnership in exchange for common Operating Partnership units. Limited partners have the right to tender their units for redemption in exchange for, at our option, our common shares on a one-for-one basis or cash based on the fair value of our common shares at the date of redemption. Unitholders receive a distribution per unit equivalent to the dividend per common share. Differences between amounts paid to redeem noncontrolling interests and their carrying values are charged or credited to equity. As a result of the redemption feature of the Operating Partnership units, the noncontrolling interests are recorded outside of permanent equity.

Noncontrolling interests are presented at the greater of their fair value or their cost basis, which is comprised of their fair value at issuance, subsequently adjusted for the noncontrolling interests’ share of net income or losses available to common shareholders, other comprehensive income or losses, distributions received or additional contributions. We account for issuances of common Operating Partnership units individually, which could result in some portion of our noncontrolling interests being carried at fair value with the remainder being carried at historical cost. Based on the closing price of our common shares at March 31, 2014, the cost to acquire, through cash purchase or issuance of our common shares, all of the outstanding common Operating Partnership units not owned by us would be approximately $34.0 million. At March 31, 2014 and December 31, 2013, we recorded adjustments of $5.3 million and $3.3 million, respectively, to present certain common Operating Partnership units at the greater of their carrying value or redemption value.

At December 31, 2013, 2,627,452 of the total common Operating Partnership units, or 4.3%, were not owned by us. During the first quarter of 2014, we issued 3,125 common Operating Partnership units at a fair value of $40 thousand to the seller of 840 First Street, NE to satisfy our contingent consideration obligation related to the acquisition of the property. As a result, 2,630,577 of the total common Operating Partnership units, or 4.3%, were not owned by us at March 31, 2014. There were no common Operating Partnership units redeemed for common shares or cash during the three months ended March 31, 2014 and 2013.

(b) Noncontrolling Interests in the Consolidated Partnership

When we are deemed to have a controlling interest in a partially-owned entity, we will consolidate all of the entity’s assets, liabilities and operating results within our condensed consolidated financial statements. The net assets contributed to the consolidated entity by the third party, if any, will be reflected within permanent equity in our consolidated balance sheets to the extent they are not mandatorily redeemable. The amount will be recorded based on the third party’s initial investment in the consolidated entity and will be adjusted to reflect the third party’s share of earnings or losses in the consolidated entity and any distributions received or additional contributions made by the third party. The earnings or losses from the entity attributable to the third party are recorded as a component of “Net loss attributable to noncontrolling interests” in our consolidated statements of operations.

On August 4, 2011, we formed a joint venture, in which we have a 97% interest, with an affiliate of Perseus Realty, LLC to acquire Storey Park in our Washington, D.C. reporting segment. At the time, the site was leased to Greyhound, which subsequently relocated its operations. Greyhound’s lease expired on August 31, 2013, at which time the property was placed into development. The joint venture anticipates developing a mixed-use project on the 1.6 acre site, which can accommodate up to 712,000 square feet of office space. At March 31, 2014, the total investment in the development project was $51.2 million, which included the original cost basis of the property of $43.3 million.

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Debt

3 Months Ended

Mar. 31, 2014

Debt Disclosure [Abstract]

Debt

(8) Debt

Our borrowings consisted of the following (dollars in thousands):

	March 31, 2014		December 31, 2013
Mortgage loans, effective interest rates ranging from 4.40% to 6.63%, maturing at various dates through July 2022(1)	$	275,095	$	274,648
Unsecured term loan, effective interest rates ranging from LIBOR plus 1.45% to LIBOR plus 1.90%, with staggered maturity dates ranging from October 2018 to October 2020(1)		300,000		300,000
Unsecured revolving credit facility, effective interest rate of LIBOR plus 1.50%, maturing October 2017(1)		96,000		99,000
	$	671,095	$	673,648

⁽¹⁾ At March 31, 2014, LIBOR was 0.15%. All references to LIBOR in the condensed consolidated financial statements refer to one-month LIBOR.

(a) Mortgage Loans

The following table provides a summary of our mortgage debt at March 31, 2014 and December 31, 2013 (dollars in thousands):

Encumbered Property	Contractual Interest Rate	Effective Interest Rate			Maturity Date		March 31, 2014			December 31, 2013
Annapolis Business Center	5.74%		6.25	%		June 2014	$	8,035		$	8,076
Storey Park(1)(2)	LIBOR + 2.75%		5.80	%		October 2014		22,000			22,000
Jackson National Life Loan(3)	5.19%		5.19	%		August 2015		65,829			66,116
Hanover Business Center Building D	8.88%		6.63	%		August 2015		216			252
Chesterfield Business Center Buildings C,D,G and H	8.50%		6.63	%		August 2015		589			681
440 First Street, NW Construction Loan(1)(4)	LIBOR + 2.50%		4.78	%		May 2016		23,493			21,699
Gateway Centre Manassas Building I	7.35%		5.88	%		November 2016		588			638
Hillside I and II	5.75%		4.62	%		December 2016		13,248			13,349
Redland Corporate Center Buildings II & III	4.20%		4.64	%		November 2017		66,737			67,038
Hanover Business Center Building C	7.88%		6.63	%		December 2017		617			653
840 First Street, NE	5.72%		6.01	%		July 2020		37,000			37,151
Battlefield Corporate Center	4.26%		4.40	%		November 2020		3,812			3,851
Chesterfield Business Center Buildings A,B,E and F	7.45%		6.63	%		June 2021		1,824			1,873
Airpark Business Center	7.45%		6.63	%		June 2021		995			1,022
1211 Connecticut Avenue, NW	4.22%		4.47	%		July 2022		30,112			30,249
			5.12	%(5)				275,095			274,648
Unamortized fair value adjustments								(612	)		(663	)
Total contractual principal balance							$	274,483		$	273,985

⁽¹⁾ At March 31, 2014, LIBOR was 0.15%.

⁽²⁾  The loan incurs interest at a variable rate of LIBOR plus a spread of 2.75% (with a floor of 5.0%) and matures in October 2014, with a one-year extension at our option.

⁽³⁾  At March 31, 2014, the loan was secured by the following properties: Plaza 500, Van Buren Office Park, Rumsey Center, Snowden Center, Greenbrier Technology Center II and Norfolk Business Center. The terms of the loan allow our Company to substitute collateral, as long as certain debt-service coverage and loan-to-value ratios are maintained, or to prepay a portion of the loan, with a prepayment penalty, subject to a debt-service yield.

⁽⁴⁾  In January 2014, we borrowed an additional $1.8 million under the construction loan.

⁽⁵⁾ Weighted average interest rate on total mortgage debt.

Construction Loan

On June 5, 2013, we entered into a construction loan (the “Construction Loan”) that is collateralized by our 440 First Street, NW property, which underwent a major redevelopment that was substantially completed in October 2013. The Construction Loan has a borrowing capacity of up to $43.5 million, of which we initially borrowed $21.7 million in the second quarter of 2013 and borrowed an additional $1.8 million in January 2014. The Construction Loan has a variable interest rate of LIBOR plus a spread of 2.5% and matures in May 2016, with two one-year extension options at our discretion. We can repay all or a portion of the Construction Loan, without penalty, at any time during the term of the loan. At March 31, 2014, per the terms of the loan agreement, 50% of the outstanding principal balance and all of the outstanding accrued interest were recourse to us. The percentage of outstanding principal balance that is recourse to us can be reduced upon the property achieving certain operating thresholds. As of March 31, 2014, we were in compliance with all the financial covenants of the Construction Loan.

(b) Unsecured Term Loan

The table below shows the outstanding balances and the interest rates of the three tranches of the $300.0 million unsecured term loan at March 31, 2014 (dollars in thousands):

	Maturity Date	Amount		Interest Rate(1)
Tranche A	October 2018	$	100,000	LIBOR, plus 145 basis points
Tranche B	October 2019		100,000	LIBOR, plus 160 basis points
Tranche C	October 2020		100,000	LIBOR, plus 190 basis points
		$	300,000

⁽¹⁾  The interest rate spread is subject to change based on our maximum total indebtedness ratio. For more information, see note 8(e) Debt – Financial Covenants.

The term loan agreement contains various restrictive covenants substantially identical to those contained in our unsecured revolving credit facility, including with respect to liens, indebtedness, investments, distributions, mergers and asset sales. In addition, the agreement requires that we satisfy certain financial covenants that are also substantially identical to those contained in our unsecured revolving credit facility. The agreement also includes customary events of default, the occurrence of which, following any applicable cure period, would permit the lenders to, among other things, declare the principal, accrued interest and other obligations of our Company under the agreement to be immediately due and payable. As of March 31, 2014, we were in compliance with all the financial covenants of the unsecured term loan.

(c) Unsecured Revolving Credit Facility

During the first quarter of 2014, we borrowed $26.0 million under the unsecured revolving credit facility, which was used to fund a $9.0 million increase to our 950 F Street, NW mezzanine loan and for general corporate purposes. During the first quarter of 2014, we used $29.0 million of proceeds from the sale of Girard Business Center and Gateway Center to pay down a portion of the outstanding balance under the unsecured revolving credit facility. The weighted average borrowings outstanding under the unsecured revolving credit facility were $97.1 million with a weighted average interest rate of 1.7% for the three months ended March 31, 2014, compared with $221.9 million and 2.9%, respectively, for the three months ended March 31, 2013. Our maximum outstanding borrowings were $112.0 million and $230.0 million during the three months ended March 31, 2014 and 2013, respectively. At March 31, 2014, outstanding borrowings under the unsecured revolving credit facility were $96.0 million with a weighted average interest rate of 1.7%. At March 31, 2014, LIBOR was 0.15% and the applicable spread on our unsecured revolving credit facility was 150 basis points. The available capacity under the unsecured revolving credit facility was $120.8 million as of the date of this filing. We are required to pay an annual commitment fee of 0.25% based on the amount of unused capacity under the unsecured revolving credit facility. As of March 31, 2014, we were in compliance with all the financial covenants of the unsecured revolving credit facility.

(d) Interest Rate Swap Agreements

At March 31, 2014, we fixed LIBOR, at a weighted average interest rate of 1.5%, on $300.0 million of our variable rate debt through eleven interest rate swap agreements. In January 2014, an interest rate swap that fixed LIBOR on $50.0 million of variable rate debt expired. See note 9, Derivative Instruments, for more information about our interest rate swap agreements.

(e) Financial Covenants

Our outstanding corporate debt agreements contain specific financial covenants that may impact future financing decisions made by our Company or may be impacted by a decline in operations. These covenants relate to our allowable leverage, minimum tangible net worth, fixed charge coverage and other financial metrics. As of March 31, 2014, we were in compliance with the covenants of our unsecured term loan and unsecured revolving credit facility and any such financial covenants of our mortgage debt (including the Construction Loan).

Our continued ability to borrow under the unsecured revolving credit facility is subject to compliance with financial and operating covenants, and a failure to comply with any of these covenants could result in a default under the credit facility. These debt agreements also contain cross-default provisions that would be triggered if we were in default under other loans, including mortgage loans, in excess of certain amounts. In the event of a default, the lenders could accelerate the timing of payments under the debt obligations and we may be required to repay such debt with capital from other sources, which may not be available on attractive terms, or at all, which would have a material adverse effect on our liquidity, financial condition, results of operations and ability to make distributions to our shareholders.

Our unsecured revolving credit facility and unsecured term loan are subject to interest rate spreads that float based on the quarterly measurement of our maximum consolidated total indebtedness to gross asset value ratio. Based on our leverage ratio at March 31, 2014, the applicable interest rate spreads on the unsecured revolving credit facility and the unsecured term loan will be unchanged.

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Debt - Unsecured Term Loan (Detail) (USD $) In Thousands, unless otherwise specified			3 Months Ended
	Mar. 31, 2014	Dec. 31, 2013	Mar. 31, 2014 Tranche A [Member]	Mar. 31, 2014 Tranche B [Member]	Mar. 31, 2014 Tranche C [Member]
Debt Instrument [Line Items]
Maturity Date			October 2018	October 2019	October 2020
Amount	$ 300,000	$ 300,000	$ 100,000	$ 100,000	$ 100,000
Interest Rate			LIBOR, plus 145 basis points	LIBOR, plus 160 basis points	LIBOR, plus 190 basis points

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Investment in Affiliates

3 Months Ended

Mar. 31, 2014

Equity Method Investments And Joint Ventures [Abstract]

Investment in Affiliates

(6) Investment in Affiliates

We own an interest in several joint ventures that own properties. We do not control the activities that are most significant to the joint ventures. As a result, the assets, the liabilities and the operating results of these noncontrolled joint ventures are not consolidated within our unaudited condensed consolidated financial statements. Our investments in these joint ventures are recorded as “Investment in affiliates” in our consolidated balance sheets. Our investment in affiliates consisted of the following (dollars in thousands):

	Reporting Segment	Ownership Interest			March 31, 2014		December 31, 2013
Prosperity Metro Plaza	Northern Virginia		51	%	$	24,527	$	24,735
1750 H Street, NW	Washington, D.C.		50	%		16,711		16,780
Aviation Business Park	Maryland		50	%		4,977		5,008
RiversPark I and II	Maryland		25	%		2,603		2,627
					$	48,818	$	49,150

The net assets of our unconsolidated joint ventures consisted of the following (dollars in thousands):

	March 31, 2014		December 31, 2013
Assets:
Rental property, net	$	193,783	$	194,240
Cash and cash equivalents		4,349		3,680
Other assets		15,205		15,585
Total assets		213,337		213,505
Liabilities:
Mortgage loans(1)(2)		105,595		106,384
Other liabilities		6,378		5,046
Total liabilities		111,973		111,430
Net assets	$	101,364	$	102,075

⁽¹⁾  Of the total mortgage debt that encumbers our unconsolidated properties, $7.0 million is recourse to us. The recourse mortgage loan was scheduled to mature in March 2014; however, the joint venture extended the loan’s maturity date to September 2014. We believe the fair value of the potential liability to us under this guaranty is inconsequential as the likelihood of our need to perform under the debt agreement is remote.

⁽²⁾  Includes the unamortized fair value adjustments recorded at acquisition upon the assumption of mortgage loans.

Our share of earnings or losses related to our unconsolidated joint ventures is recorded in our consolidated statements of operations as “Equity in losses (earnings) of affiliates.”

The following table summarizes the results of operations of our unconsolidated joint ventures, which due to our varying ownership interests in the joint ventures and the varying operations of the joint ventures may or may not be reflective of the amounts recorded in our unaudited consolidated statements of operations (dollars in thousands):

	Three Months Ended March 31,
	2014			2013
Total revenues	$	5,752		$	6,052
Total operating expenses		(2,226	)		(1,865	)
Net operating income		3,526			4,187
Depreciation and amortization		(2,803	)		(2,939	)
Other expenses, net		(1,011	)		(1,074	)
Net (loss) income	$	(288	)	$	174

We earn various fees from several of our joint ventures, which include management fees, leasing commissions and construction management fees. We recognize fees only to the extent of the third party ownership interest in our unconsolidated joint ventures. We recognized fees from our unconsolidated joint ventures of $0.1 million and $0.2 million during the three months ended March 31, 2014 and 2013, respectively, which are reflected within “Tenant reimbursements and other revenues” in our consolidated statements of operations.

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Discontinued Operations

3 Months Ended

Mar. 31, 2014

Discontinued Operations And Disposal Groups [Abstract]

Discontinued Operations

(7) Discontinued Operations

In January 2014, we sold a portfolio of properties that consisted of Girard Business Center, a seven-building, 297,000 square foot business park, and Gateway Center, a two-building, 45,000 square foot office park, which are both located in Gaithersburg, Maryland, for aggregate net proceeds of $31.6 million. Proceeds from the sale were used to pay down outstanding debt. We reported a gain on the sale of the portfolio of $0.1 million in our first quarter 2014 results.

At March 31, 2014, our Patrick Center and West Park properties met our held-for-sale criteria (described in note 2(g), Rental Property) and, therefore, the assets of the buildings were classified within “Assets held-for-sale” and the liabilities of the buildings, which totaled $0.2 million, were classified within “Accounts payable and other liabilities” in our consolidated balance sheet. We sold our Patrick Center and West Park properties in April 2014 for aggregate net proceeds of $13.8 million. The operating results of the properties are reflected as discontinued operations in our consolidated statements of operations for the periods presented.

The following table is a summary of completed property dispositions whose operating results are reflected as discontinued operations in our consolidated statements of operations for the periods presented:

	Reporting Segment	Disposition Date	Property Type	Square Feet
Patrick Center(1)	Maryland	4/16/2014	Office		66,269
West Park(1)	Maryland	4/2/2014	Office		28,333
Girard Business Center and Gateway Center	Maryland	1/29/2014	Business Park and Office		341,973
Worman’s Mill Court	Maryland	11/19/2013	Office		40,099
Triangle Business Center	Maryland	9/27/2013	Business Park		74,429
4200 Tech Court	Northern Virginia	8/15/2013	Office		33,875
Industrial Portfolio(2)	Various	May/June 2013	Industrial		4,280,985
4212 Tech Court	Northern Virginia	6/5/2013	Office		32,055

⁽¹⁾  Classified as held-for-sale at March 31, 2014 and subsequently sold in April 2014.

⁽²⁾  During the second quarter of 2013, we sold 24 industrial properties, which consisted of two separate transactions. On May 7, 2013, we sold I-66 Commerce Center, a 236,000 square foot industrial property in Haymarket, Virginia. On June 18, 2013, we completed the sale of the remaining 23 industrial properties.

We have had, and will have, no continuing involvement with any of our disposed properties subsequent to their disposal. The operations of the disposed properties were not subject to any income based taxes. We did not dispose of or enter into any binding agreements to sell any other properties during the three months ended March 31, 2014 and 2013.

The operating results of the disposed properties and properties classified as held-for-sale, including any gains or losses on sale of the properties, are reflected as discontinued operations in our consolidated statements of operations for the periods presented. In April 2014, the FASB issued ASU 2014-08, which will impact the future presentation of operations and gains or losses from disposed properties. For more information, see footnote 2(f), Summary of Significant Accounting Policies – Application of New Accounting Standards.

The following table summarizes the components of net (loss) income from discontinued operations for the three months ended March 31 (dollars in thousands):

	2014			2013
Revenues	$	802		$	12,299
Net (loss) income, before taxes(1)		(1,096	)		5,281
Gain on sale of real estate property		54			—

⁽¹⁾  For the three months ended March 31, 2014, we accelerated $1.0 million of unamortized straight-line rent and deferred abatement costs related to the sale of Girard Business Center and Gateway Center.

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Derivative Instruments

3 Months Ended

Mar. 31, 2014

Derivative Instruments And Hedging Activities Disclosure [Abstract]

Derivative Instruments

(9) Derivative Instruments

We are exposed to certain risks arising from business operations and economic factors. We use derivative financial instruments to manage exposure that arise from business activities in which our future exposure to interest rate fluctuations is unknown. The objective in the use of an interest rate derivative is to add stability to interest expenses and manage exposure to interest rate changes. We do not use derivatives for trading or speculative purposes and intend to enter into derivative agreements only with counterparties that we believe have a strong credit rating to mitigate the risk of counterparty default or insolvency. No hedging activity can completely insulate us from the risks associated with changes in interest rates. Moreover, interest rate hedging could fail to protect us or adversely affect us because, among other things:

• available interest rate hedging may not correspond directly with the interest rate risk for which we seek protection;

• the duration of the hedge may not match the duration of the related liability;

• the party owing money in the hedging transaction may default on its obligation to pay; and

• the credit quality of the party owing money on the hedge may be downgraded to such an extent that it impairs our ability to sell or assign our side of the hedging transaction.

We enter into interest rate swap agreements to hedge our exposure on our variable rate debt against fluctuations in prevailing interest rates. The interest rate swap agreements fix LIBOR to a specified interest rate; however, the swap agreements do not affect the contractual spreads associated with each variable debt instrument’s applicable interest rate. In January 2014, an interest rate swap that fixed LIBOR on $50.0 million of variable rate debt expired.

At March 31, 2014, we fixed LIBOR at a weighted average interest rate of 1.5% on $300.0 million of our variable rate debt through eleven interest rate swap agreements that are summarized below (dollars in thousands):

Effective Date	Maturity Date	Notional Amount	Interest Rate Contractual Component	Fixed LIBOR Interest Rate
July 2011	July 2016	35,000	LIBOR	1.754%
July 2011	July 2016	25,000	LIBOR	1.763%
July 2011	July 2017	30,000	LIBOR	2.093%
July 2011	July 2017	30,000	LIBOR	2.093%
September 2011	July 2018	30,000	LIBOR	1.660%
January 2012	July 2018	25,000	LIBOR	1.394%
March 2012	July 2017	25,000	LIBOR	1.129%
March 2012	July 2017	12,500	LIBOR	1.129%
March 2012	July 2018	12,500	LIBOR	1.383%
June 2012	July 2017	50,000	LIBOR	0.955%
June 2012	July 2018	25,000	LIBOR	1.135%
Total/Weighted Average		$300,000		1.505%

Our interest rate swap agreements are designated as cash flow hedges and we record any unrealized gains associated with the change in fair value of the swap agreements within “Accumulated other comprehensive loss” and “Prepaid expenses and other assets” and any unrealized losses within “Accumulated other comprehensive loss” and “Accounts payable and other liabilities” on our consolidated balance sheets. We record our proportionate share of any unrealized gains or losses on our cash flow hedges associated with our unconsolidated joint ventures within “Accumulated other comprehensive loss” and “Investment in affiliates” on our consolidated balance sheets. We record any gains or losses incurred as a result of each interest rate swap agreement’s fixed rate deviating from our respective loan’s contractual rate within “Interest expense” in our consolidated statements of operations. We did not have any material ineffectiveness associated with our cash flow hedges during the three months ended March 31, 2014 and 2013.

Amounts reported in accumulated other comprehensive loss related to derivatives will be reclassified to “Interest expense” on our consolidated statements of operations as interest payments are made on our variable-rate debt. We reclassified accumulated other comprehensive loss as an increase to interest expense of $1.0 million and $1.1 million for the three months ended March 31, 2014 and 2013, respectively. As of March 31, 2014, we estimated that $3.8 million of our accumulated other comprehensive loss will be reclassified as an increase to interest expense over the following twelve months.

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Fair Value Measurements - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Dec. 31, 2013 West Park [Member]	Mar. 31, 2014 Interest Rate Swap [Member] Rate
Derivatives, Fair Value [Line Items]
Impairment charges	$ 2.2
Minimum number of daily snapshot used for valuation of interest rate swap agreements		7,500

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Fair Value Measurements - Fair Value of Debt Instruments (Parenthetical) (Detail) (USD $) In Millions, unless otherwise specified	Mar. 31, 2014	Jan. 10, 2014	Dec. 31, 2013
Fair Value Disclosures [Abstract]
Fair value of notes receivable	$ 63.8		$ 54.9
Mezzanine loan increased		$ 34.0

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Fair Value Measurements - Fair Value of Assets and Liabilities (Detail) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
Fair Value Measurements, Non-recurring [Member]
Non-recurring Measurements:
Impaired real estate assets		$ 2,909
Fair Value Measurements, Recurring [Member]
Recurring Measurements:
Derivative instrument-swap assets	434	551
Derivative instrument-swap liabilities	4,284	4,576
Level 1 [Member] | Fair Value Measurements, Non-recurring [Member]
Non-recurring Measurements:
Impaired real estate assets
Level 1 [Member] | Fair Value Measurements, Recurring [Member]
Recurring Measurements:
Derivative instrument-swap assets
Derivative instrument-swap liabilities
Level 2 [Member] | Fair Value Measurements, Non-recurring [Member]
Non-recurring Measurements:
Impaired real estate assets		2,909
Level 2 [Member] | Fair Value Measurements, Recurring [Member]
Recurring Measurements:
Derivative instrument-swap assets	434	551
Derivative instrument-swap liabilities	4,284	4,576
Level 3 [Member] | Fair Value Measurements, Non-recurring [Member]
Non-recurring Measurements:
Impaired real estate assets
Level 3 [Member] | Fair Value Measurements, Recurring [Member]
Recurring Measurements:
Derivative instrument-swap assets
Derivative instrument-swap liabilities

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Share-Based Payments (Tables)

3 Months Ended

Mar. 31, 2014

Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]

Compensation Plans Option Activity

A summary of our stock option activity during the three months ended March 31, 2014 is presented below:

	Options			Weighted Average Exercise Price		Weighted Average Remaining Contractual Term		Aggregate Intrinsic Value
Outstanding at December 31, 2013		1,089,292		$	15.83		6.6 years	$	109,151
Granted		135,250			11.61
Exercised		(7,890	)		9.98
Forfeited		(24,253	)		14.85
Outstanding at March 31, 2014		1,192,399		$	15.41		6.7 years	$	350,090
Exercisable at March 31, 2014		559,766		$	16.99		5.0 years	$	146,958
Options expected to vest, subsequent to March 31, 2014		596,192		$	14.14		8.2 years	$	146,157

Assumptions Used in Fair Value Determination of Stock Options Granted

The weighted average assumptions used in the fair value determination of stock options granted to employees in 2014 are summarized as follows:

Risk-free interest rate	1.72	%
Expected volatility	39.04	%
Expected dividend yield	4.66	%
Weighted average expected life of options	5 years

Summary of Company's Non-Vested Share Awards

A summary of our non-vested common share awards at March 31, 2014 is as follows:

	Non-vested Common Shares			Weighted Average Grant Date Fair Value
Non-vested at December 31, 2013		637,662		$	13.33
Granted		103,075			12.90
Vested		(86,031	)		14.43
Expired		(29,514	)		10.21
Non-vested at March 31, 2014		625,192			13.26

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Discontinued Operations - Summary of Completed Property Dispositions (Detail)			3 Months Ended
	Mar. 31, 2014 sqft	Mar. 31, 2013 sqft	Mar. 31, 2014 Patrick Center [Member] sqft	Mar. 31, 2014 West Park [Member] sqft	Mar. 31, 2014 Girard Business Center and Gateway Center [Member] sqft	Mar. 31, 2014 Worman's Mill Court [Member] sqft	Mar. 31, 2014 Triangle Business Center [Member] sqft	Mar. 31, 2014 4200 Tech Court [Member] sqft	Mar. 31, 2014 Industrial Portfolio [Member] sqft	Mar. 31, 2014 4212 Tech Court [Member] sqft
Schedule Of Discontinued Operations [Line Items]
Reporting Segment			Maryland	Maryland	Maryland	Maryland	Maryland	Northern Virginia	Various	Northern Virginia
Disposition Date			Apr. 16, 2014	Apr. 02, 2014	Jan. 29, 2014	Nov. 19, 2013	Sep. 27, 2013	Aug. 15, 2013		Jun. 05, 2013
Property Type			Office	Office	Business Park and Office	Office	Business Park	Office	Industrial	Office
Square feet	8,735,388	13,449,003	66,269	28,333	341,973	40,099	74,429	33,875	4,280,985	32,055
Disposition Date									May/June 2013

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Segment Information

3 Months Ended

Mar. 31, 2014

Segment Reporting [Abstract]

Segment Information

(14) Segment Information

Our reportable segments consist of four distinct reporting and operational segments within the greater Washington D.C, region in which we operate: Washington, D.C., Maryland, Northern Virginia and Southern Virginia. We evaluate the performance of our segments based on the operating results of the properties located within each segment, which excludes large non-recurring gains and losses, gains or losses from sale of real estate assets, interest expense, general and administrative costs, acquisition costs or any other indirect corporate expense to the segments. In addition, the segments do not have significant non-cash items other than straight-line and deferred market rent amortization reported in their operating results. There are no inter-segment sales or transfers recorded between segments.

The results of operations of our four reporting segments for the three months ended March 31, 2014 and 2013 are as follows (dollars in thousands):

	Three Months Ended March 31, 2014
	Washington, D.C.			Maryland			Northern Virginia			Southern Virginia			Consolidated
Number of buildings		4	(1)		44			51			38			137
Square feet		522,560	(1)		2,274,813			3,086,550			2,851,465			8,735,388
Total revenues	$	7,140		$	11,445		$	13,666		$	9,163		$	41,414
Property operating expense		(2,187	)		(3,746	)		(3,976	)		(2,989	)		(12,898	)
Real estate taxes and insurance		(1,054	)		(1,004	)		(1,524	)		(687	)		(4,269	)
Total property operating income	$	3,899		$	6,695		$	8,166		$	5,487			24,247
Depreciation and amortization expense														(15,104	)
General and administrative														(5,196	)
Acquisition costs														(68	)
Other expenses, net														(4,280	)
Loss from discontinued operations														(1,042	)
Net loss													$	(1,443	)
Total assets(3)(4)	$	343,804		$	393,919		$	421,556		$	230,384		$	1,481,336
Capital expenditures(5)	$	6,481		$	2,390		$	822		$	1,423		$	11,393
	Three Months Ended March 31, 2013
	Washington, D.C.			Maryland			Northern Virginia			Southern Virginia			Consolidated
Number of buildings		4	(2)		62			56			57			179
Square feet		531,714	(2)		3,779,047			3,653,645			5,484,597			13,449,003
Total revenues	$	7,616		$	10,216		$	12,717		$	8,609		$	39,158
Property operating expense		(1,893	)		(2,489	)		(3,242	)		(2,687	)		(10,311	)
Real estate taxes and insurance		(1,349	)		(808	)		(1,690	)		(664	)		(4,511	)
Total property operating income	$	4,374		$	6,919		$	7,785		$	5,258			24,336
Depreciation and amortization expense														(13,987	)
General and administrative														(5,267	)
Other expenses, net														(8,400	)
Income from discontinued operations														5,281
Net income													$	1,963
Total assets(3)(4)	$	324,064		$	487,545		$	460,996		$	362,239		$	1,718,364
Capital expenditures(5)	$	5,969		$	2,823		$	3,617		$	2,963		$	15,770

⁽¹⁾ Includes occupied space at 440 First Street, NW and excludes Storey Park, which was placed in development in the third quarter of 2013.

⁽²⁾ Excludes 440 First Street, NW, which has been in redevelopment since its acquisition in 2010.

⁽³⁾  Total assets include our investment in properties that are owned through joint ventures that are not consolidated within our condensed consolidated financial statements. For more information on our unconsolidated investments, including location within our reportable segments, see footnote 6, Investment in Affiliates.

⁽⁴⁾  Corporate assets not allocated to any of our reportable segments totaled $91,673 and $83,520 at March 31, 2014 and 2013, respectively.

⁽⁵⁾ Capital expenditures for corporate assets not allocated to any of our reportable segments totaled $277 and $398 at March 31, 2014 and 2013, respectively.

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Rental Property (Tables)

3 Months Ended

Mar. 31, 2014

Text Block [Abstract]

Summary of Rental Property

Rental property, excluding properties classified as held-for-sale, consists of the following (dollars in thousands):

	March 31, 2014			December 31, 2013
Land and land improvements	$	294,819		$	294,753
Buildings and improvements		867,480			868,027
Construction in process		99,712			93,269
Tenant improvements		148,418			146,176
Furniture, fixtures and equipment		5,098			5,047
		1,415,527			1,407,272
Less: accumulated depreciation		(214,512	)		(203,973	)
	$	1,201,015		$	1,203,299

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Investment in Affiliates - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Equity Method Investments And Joint Ventures [Abstract]
Fees from joint ventures	$ 0.1	$ 0.2

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Rental Property - Summary of Rental Property (Detail) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
Property, Plant and Equipment [Line Items]
Rental property, net	$ 1,201,015	$ 1,203,299
Rental Property [Member]
Property, Plant and Equipment [Line Items]
Land and land improvements	294,819	294,753
Buildings and improvements	867,480	868,027
Construction in process	99,712	93,269
Tenant improvements	148,418	146,176
Furniture, fixtures and equipment	5,098	5,047
Rental property, gross	1,415,527	1,407,272
Less: accumulated depreciation	$ (214,512)	$ (203,973)

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Consolidated Statements of Comprehensive (Loss) Income (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Statement Of Income And Comprehensive Income [Abstract]
Net (loss) income	$ (1,443)	$ 1,963
Unrealized gain on derivative instruments	317	1,093
Unrealized loss on derivative instruments	(142)
Total comprehensive (loss) income	(1,268)	3,056
Net loss attributable to noncontrolling interests	195	59
Net gain from derivative instruments attributable to noncontrolling interests	(7)	(52)
Comprehensive (loss) income attributable to First Potomac Realty Trust	$ (1,080)	$ 3,063

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Earnings Per Common Share

3 Months Ended

Mar. 31, 2014

Earnings Per Share [Abstract]

Earnings Per Common Share

(3) Earnings Per Common Share

Basic earnings or loss per common share (“EPS”) is calculated by dividing net income or loss attributable to common shareholders by the weighted average common shares outstanding for the periods presented. Diluted EPS is computed after adjusting the basic EPS computation for the effect of dilutive common equivalent shares outstanding during the periods presented, which include stock options, non-vested shares and preferred shares. We apply the two-class method for determining EPS as our outstanding unvested shares with non-forfeitable dividend rights are considered participating securities. Our excess of distributions over earnings related to participating securities is shown as a reduction in total earnings attributable to common shareholders in our computation of EPS.

The following table sets forth the computation of our basic and diluted earnings per common share (amounts in thousands, except per share amounts):

	Three Months Ended March 31,
	2014			2013
Numerator for basic and diluted earnings per common share:
Loss from continuing operations	$	(401	)	$	(3,318	)
(Loss) income from discontinued operations		(1,042	)		5,281
Net (loss) income		(1,443	)		1,963
Less: Net loss from continuing operations attributable to noncontrolling interests		150			314
Less: Net loss (income) from discontinued operations attributable to noncontrolling interests		45			(255	)
Net (loss) income attributable to First Potomac Realty Trust		(1,248	)		2,022
Less: Dividends on preferred shares		(3,100	)		(3,100	)
Net loss attributable to common shareholders		(4,348	)		(1,078	)
Less: Allocation to participating securities		(78	)		(99	)
Net loss attributable to common shareholders	$	(4,426	)	$	(1,177	)
Denominator for basic and diluted earnings per common share:
Weighted average shares outstanding – basic and diluted		58,097			50,404
Basic and diluted earnings per common share:
Loss from continuing operations	$	(0.06	)	$	(0.12	)
(Loss) income from discontinued operations		(0.02	)		0.10
Net loss	$	(0.08	)	$	(0.02	)

In accordance with GAAP regarding earnings per common share, we did not include the following potential weighted average common shares in our calculation of diluted earnings per common share as they are anti-dilutive for the periods presented (amounts in thousands):

	Three Months Ended March 31,
	2014		2013
Stock option awards		1,206		1,495
Non-vested share awards		414		533
Series A Preferred Shares(1)		12,671		11,643
		14,291		13,671

⁽¹⁾  Our Series A Preferred Shares are only convertible into our common shares upon certain changes in control of our Company. The dilutive shares are calculated as the daily average of the face value of the Series A Preferred Shares divided by the outstanding common share price.

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Debt - Summary of Company's Mortgage Debt (Parenthetical) (Detail) (USD $) In Millions, unless otherwise specified	0 Months Ended	1 Months Ended	3 Months Ended
	Jun. 05, 2013	Jan. 31, 2014	Mar. 31, 2014	Jun. 30, 2013
Debt Disclosure [Abstract]
Debt instrument variable rate basis			0.15%
LIBOR plus interest rate	2.50%		2.75%
LIBOR floor rate			5.00%
Maturity date			Oct. 31, 2014
Amount borrowed		$ 1.8		$ 21.7

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Equity - Company's Accumulated Other Comprehensive Loss (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Statement Of Partners Capital [Abstract]
Beginning balance	$ (3,836)	$ (10,917)
Net gain on derivative instruments	175	1,093
Net gain attributable to noncontrolling interests	(7)	(52)
Ending balance	$ (3,668)	$ (9,876)

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Notes Receivable (Tables)

3 Months Ended

Mar. 31, 2014

Receivables [Abstract]

Summary of Notes Receivable

Below is a summary of our notes receivable (dollars in thousands):

Balance at March 31, 2014
Face Amount		Unamortized Origination Fees			Balance		Interest Rate			Property
$	34,000	$	—		$	34,000		9.75	%		950 F Street, NW
	29,844		(62	)		29,782		9.0	%		America’s Square
$	63,844	$	(62	)	$	63,782

Balance at December 31, 2013
Face Amount		Unamortized Origination Fees			Balance		Interest Rate			Property
$	25,000	$	(130	)	$	24,870		12.5	%		950 F Street, NW
	29,896		(70	)		29,826		9.0	%		America’s Square
$	54,896	$	(200	)	$	54,696

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Share-Based Payments - Summary of Company's Non-vested Share Awards (Detail) (USD $)	1 Months Ended	3 Months Ended
	Feb. 28, 2014	Mar. 31, 2014 Non-Vested Share Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Non-vested Shares, Beginning Balance		637,662
Non-vested Shares, Granted	91,466	103,075
Non-vested Shares, Vested		(86,031)
Non-vested Shares, Expired		(29,514)
Non-vested Shares, Ending Balance		625,192
Weighted Average Grant Date Fair Value, Beginning Balance		$ 13.33
Weighted Average Grant Date Fair Value, Granted		$ 12.90
Weighted Average Grant Date Fair Value, Vested		$ 14.43
Weighted Average Grant Date Fair Value, Expired		$ 10.21
Weighted Average Grant Date Fair Value, Ending Balance		$ 13.26

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Summary of Significant Accounting Policies - Additional Information (Detail) (USD $)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Accounting Policies [Abstract]
Allowance for credit losses for its notes receivable	$ 0	$ 0

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Share-Based Payments

3 Months Ended

Mar. 31, 2014

Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]

Share-Based Payments

(13) Share-Based Payments

We record costs related to our share-based compensation based on the grant-date fair value calculated in accordance with GAAP. We recognize share-based compensation costs on a straight-line basis over the requisite service period for each award and these costs are recorded within “General and administrative expense” or “Property operating expense” in our consolidated statements of operations based on the employee’s job function.

Stock Options Summary

During the first quarter of 2014, we issued 135,250 stock options to our non-officer employees. The stock options vest 25% on the first anniversary of the date of grant and 6.25% in each subsequent calendar quarter. The award described above has a 10-year contractual life. We recognized compensation expense associated with stock option awards of $137 thousand and $143 thousand during the three months ended March 31, 2014 and 2013, respectively.

A summary of our stock option activity during the three months ended March 31, 2014 is presented below:

	Options			Weighted Average Exercise Price		Weighted Average Remaining Contractual Term		Aggregate Intrinsic Value
Outstanding at December 31, 2013		1,089,292		$	15.83		6.6 years	$	109,151
Granted		135,250			11.61
Exercised		(7,890	)		9.98
Forfeited		(24,253	)		14.85
Outstanding at March 31, 2014		1,192,399		$	15.41		6.7 years	$	350,090
Exercisable at March 31, 2014		559,766		$	16.99		5.0 years	$	146,958
Options expected to vest, subsequent to March 31, 2014		596,192		$	14.14		8.2 years	$	146,157

As of March 31, 2014, we had $1.8 million of unrecognized compensation cost, net of estimated forfeitures, related to stock option awards. We anticipate this cost will be recognized over a weighted-average period of approximately 4.6 years. We calculate the grant date fair value of option awards using a Black-Scholes option-pricing model. Expected volatility is based on an assessment of our realized volatility over the preceding period that is equivalent to the award’s expected life, which in our opinion, gives an accurate indication of future volatility. The expected term represents the period of time the options are anticipated to remain outstanding as well as our historical experience for groupings of employees that have similar behavior and are considered separately for valuation purposes. The risk-free rate is based on the U.S. Treasury rate at the time of grant for instruments of similar term.

The weighted average assumptions used in the fair value determination of stock options granted to employees in 2014 are summarized as follows:

Risk-free interest rate	1.72	%
Expected volatility	39.04	%
Expected dividend yield	4.66	%
Weighted average expected life of options	5 years

The weighted average grant date fair value of the stock options issued during the three months ended March 31, 2014 was $2.67 per share.

Option Exercises

We received approximately $79 thousand and $86 thousand from the exercise of stock options during the three months ended March 31, 2014 and 2013, respectively. Shares issued as a result of stock option exercises are provided by the issuance of new shares. The total intrinsic value of options exercised during the three months ended March 31, 2014 and 2013 was $18 thousand and $26 thousand, respectively.

Non-Vested Share Awards

We issue non-vested common share awards that either vest over a specific time period that is identified at the time of issuance or vest upon the achievement of specific performance goals that are identified at the time of issuance. We issue new common shares, subject to restrictions, upon each grant of non-vested common share awards. In February 2014, we granted a total of 103,075 non-vested common shares in two separate awards to our officers. The first award of 91,466 non-vested common shares, which was granted to all of our officers, will vest ratably on the date of issuance over a three-year term. The second award of 11,609 non-vested common shares, which was granted to our Chief Executive Officer, will vest on the one-year anniversary of the date of issuance.

We recognized $0.7 million and $0.6 million of compensation expense associated with our non-vested common share awards during the three months ended March 31, 2014 and 2013, respectively. Dividends on all non-vested common share awards are recorded as a reduction of equity. We apply the two-class method for determining EPS as our outstanding non-vested common shares with non-forfeitable dividend rights are considered participating securities. Our excess of dividends over earnings related to participating securities are shown as a reduction in net loss attributable to common shareholders in our computation of EPS.

A summary of our non-vested common share awards at March 31, 2014 is as follows:

	Non-vested Common Shares			Weighted Average Grant Date Fair Value
Non-vested at December 31, 2013		637,662		$	13.33
Granted		103,075			12.90
Vested		(86,031	)		14.43
Expired		(29,514	)		10.21
Non-vested at March 31, 2014		625,192			13.26

We value our non-vested time-based share awards at the grant date fair value, which is the market price of our common shares. As of March 31, 2014, we had $5.4 million of unrecognized compensation cost related to non-vested common shares. We anticipate this cost will be recognized over a weighted-average period of 2.7 years.