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, 2017.

OR

¨ 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, 11th 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, a smaller reporting company, or an emerging growth company. See definitions of “large accelerated filer,” “accelerated filter,” “smaller reporting company,” and “emerging growth company” in Rule 12b-2 of the Exchange Act. (Check one):

Large Accelerated Filer	x	Accelerated Filer	¨
Non-Accelerated Filer	¨	Smaller Reporting Company	¨
(Do not check if a smaller reporting company)		Emerging Growth Company	¨
If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ¨

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

As of April 27, 2017, there were 58,716,398 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, 2017 (unaudited) and December 31, 2016	4
	Consolidated statements of operations (unaudited) for the three months ended March 31, 2017 and 2016	5
	Consolidated statements of comprehensive income (loss) (unaudited) for the three months ended March 31, 2017 and 2016	6
	Consolidated statements of cash flows (unaudited) for the three months ended March 31, 2017 and 2016	7
	Notes to condensed consolidated financial statements (unaudited)	9
Item 2.	Management’s Discussion and Analysis of Financial Condition and Results of Operations	28
Item 3.	Quantitative and Qualitative Disclosures about Market Risk	52
Item 4.	Controls and Procedures	53
Part II:	Other Information
Item 1.	Legal Proceedings	54
Item 1A.	Risk Factors	54
Item 2.	Unregistered Sales of Equity Securities and Use of Proceeds	54
Item 3.	Defaults Upon Senior Securities	54
Item 4.	Mine Safety Disclosures	54
Item 5.	Other Information	54
Item 6.	Exhibits	55
	Signatures	56

2

SPECIAL NOTE ABOUT FORWARD-LOOKING STATEMENTS

This report contains forward-looking statements, including statements regarding potential dispositions and the timing of such dispositions, future acquisitions and growth opportunities, and the timing of future tenant occupancies, 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 First Potomac Realty Trust (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, performance or achievements to differ materially from the Company’s expectations include, among others, the following:

• 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 dispositions on acceptable terms, or at all;

• 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;

• 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, 2016 and in the other documents the Company files with the Securities and Exchange Commission (“SEC”), which are accessible on the SEC’s website at www.sec.gov.

The risks set forth above are not exhaustive. Other sections of this report may include additional factors that could adversely affect the Company’s business and financial performance. Moreover, the Company operates in a very competitive and rapidly changing environment. 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 do not intend to, and expressly disclaim any duty to, update or revise the forward-looking statements in this discussion to reflect changes in underlying assumptions or factors, new information, future events, or otherwise, after the date hereof, except as may be required by law. In light of these risks and uncertainties, you should not rely upon these forward-looking statements after the date of this report and should keep in mind that any forward-looking statement made in this discussion, or elsewhere, might not occur.

3

FIRST POTOMAC REALTY TRUST AND SUBSIDIARIES

Consolidated Balance Sheets

(Amounts in thousands, except per share amounts)

	March 31, 2017			December 31, 2016
	(unaudited)
Assets:
Rental property, net	$	1,024,605		$	1,059,272
Assets held-for-sale	—			13,176
Cash and cash equivalents	13,269			14,144
Escrows and reserves	2,348			1,419
Accounts and other receivables, net of allowance for doubtful accounts of $922 and $655, respectively	5,611			6,892
Accrued straight-line rents, net of allowance for doubtful accounts of $471 and $414, respectively	45,211			42,745
Investment in affiliates	42,314			49,392
Deferred costs, net	41,603			42,712
Prepaid expenses and other assets	5,414			5,389
Intangible assets, net	23,622			25,106
Total assets	$	1,203,997		$	1,260,247
Liabilities:
Mortgage loans, net	$	295,523		$	296,212
Unsecured term loan, net	299,433			299,404
Unsecured revolving credit facility, net	48,758			141,555
Accounts payable and other liabilities	40,897			43,904
Accrued interest	1,470			1,537
Rents received in advance	6,493			6,234
Tenant security deposits	4,831			4,982
Deferred market rent, net	1,716			1,792
Total liabilities	699,121			795,620
Noncontrolling interests in the Operating Partnership	27,516			28,244
Equity:
Common shares, $0.001 par value per share, 150,000 shares authorized; 58,716 and 58,319 shares issued and outstanding, respectively	59			58
Additional paid-in capital	916,460			913,367
Accumulated other comprehensive loss	(273		)	(844		)
Dividends in excess of accumulated earnings	(438,886		)	(476,198		)
Total equity	477,360			436,383
Total liabilities, noncontrolling interests and equity	$	1,203,997		$	1,260,247

See accompanying notes to condensed consolidated financial statements.

4

FIRST POTOMAC REALTY TRUST AND SUBSIDIARIES

Consolidated Statements of Operations

(unaudited)

(Amounts in thousands, except per share amounts)

	Three Months Ended March 31,
	2017			2016
Revenues:
Rental	$	30,818		$	33,844
Tenant reimbursements and other	7,005			8,853
Total revenues	37,823			42,697
Operating expenses:
Property operating	9,958			11,537
Real estate taxes and insurance	4,661			5,216
General and administrative	4,497			4,578
Depreciation and amortization	14,566			15,006
Total operating expenses	33,682			36,337
Operating income	4,141			6,360
Other expenses (income)
Interest expense	6,344			6,816
Interest and other income	(210		)	(1,003		)
Equity in earnings of affiliates	(4,223		)	(555		)
(Gain) loss on sale of rental property	(42,799		)	1,155
Loss on debt extinguishment	—			48
Total other expenses (income)	(40,888		)	6,461
Net income (loss)	45,029			(101		)
Less: Net (income) loss attributable to noncontrolling interests	(1,884		)	147
Net income attributable to First Potomac Realty Trust	43,145			46
Less: Dividends on preferred shares	—			(2,248		)
Less: Issuance costs of redeemed preferred shares	—			(1,904		)
Net income (loss) attributable to common shareholders	$	43,145		$	(4,106	)
Basic and diluted earnings per common share:
Net income (loss) attributable to common shareholders - basic	$	0.75		$	(0.07	)
Net income (loss) attributable to common shareholders - dilutive	$	0.74		$	(0.07	)
Weighted average common shares outstanding:
Basic	57,635			57,542
Diluted	57,907			57,542

See accompanying notes to condensed consolidated financial statements.

5

FIRST POTOMAC REALTY TRUST AND SUBSIDIARIES

Consolidated Statements of Comprehensive Income (Loss)

(unaudited)

(Amounts in thousands)

	Three Months Ended March 31,
	2017			2016
Net income (loss)	$	45,029		$	(101	)
Unrealized gain on derivative instruments	596			169
Unrealized loss on derivative instruments	—			(1,031		)
Total comprehensive income (loss)	45,625			(963		)
Net (income) loss attributable to noncontrolling interests	(1,884		)	147
Net (gain) loss from derivative instruments attributable to noncontrolling interests	(25		)	36
Comprehensive income (loss) attributable to First Potomac Realty Trust	$	43,716		$	(780	)

See accompanying notes to condensed consolidated financial statements.

6

FIRST POTOMAC REALTY TRUST AND SUBSIDIARIES Consolidated Statements of Cash Flows (Unaudited, amounts in thousands)
	Three Months Ended March 31,
	2017			2016
Cash flows from operating activities:
Net income (loss)	$	45,029		$	(101	)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization	14,823			15,303
Stock based compensation	829			488
Bad debt expense	324			105
Amortization of deferred market rent	50			79
Amortization of financing costs and discounts	434			472
Equity in earnings of affiliates	(4,223		)	(555		)
Distributions from investments in affiliates	—			425
(Gain) loss on sale of rental property	(42,799		)	1,155
Changes in assets and liabilities:
Escrows and reserves	(929		)	375
Accounts and other receivables	1,007			1,358
Accrued straight-line rents	(2,883		)	(1,725		)
Prepaid expenses and other assets	(6		)	205
Tenant security deposits	(129		)	(748		)
Accounts payable and accrued expenses	(1,474		)	(2,313		)
Accrued interest	(67		)	39
Rents received in advance	259			70
Deferred costs	(1,171		)	(682		)
Total adjustments	(35,955		)	14,051
Net cash provided by operating activities	9,074			13,950
Cash flows from investing activities:
Proceeds from sale of rental property, net	85,754			90,501
Change in escrow and reserve accounts	—			246
Additions to rental property and furniture, fixtures and equipment	(6,569		)	(17,502		)
Additions to construction in progress	(242		)	(5,141		)
Proceeds from sale of rental property owned through unconsolidated joint ventures, net	11,301			—
Net cash provided by investing activities	90,244			68,104
Cash flows from financing activities:
Financing costs	—			(245		)
Issuance of debt	4,000			80,243
Repayments of debt	(97,891		)	(93,119		)
Dividends to common shareholders	(5,815		)	(8,701		)
Dividends to preferred shareholders	—			(2,776		)
Distributions to noncontrolling interests	(255		)	(393		)
Income tax obligation payments made on behalf of employees	(232		)	(122		)
Redemption of preferred shares	—			(55,000		)
Redemption of operating partnership units	—			(319		)
Net cash used in financing activities	(100,193		)	(80,432		)
Net (decrease) increase in cash and cash equivalents	(875		)	1,622
Cash and cash equivalents, beginning of period	14,144			13,527
Cash and cash equivalents, end of period	$	13,269		$	15,149

See accompanying notes to condensed consolidated financial statements.

7

FIRST POTOMAC REALTY TRUST AND SUBSIDIARIES

Consolidated Statements of Cash Flows – Continued

(unaudited)

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

	2017			2016
Cash paid for interest, net	$	5,975		$	6,251
Non-cash investing and financing activities:
Change in fair value of the outstanding common Operating Partnership units	(2,383		)	(1,324		)
Value of common shares retired to settle employee tax obligation	232			122
Changes in accruals:
Additions to rental property and furniture, fixtures and equipment	(1,610		)	421
Additions to development and redevelopment	474			(1,190		)

Cash paid for interest on indebtedness is net of capitalized interest of $22 thousand and $0.2 million for the three months ended March 31, 2017 and 2016, respectively.

During the three months ended March 31, 2017 and 2016, certain of our employees surrendered common shares owed them valued at $0.2 million and $0.1 million, respectively, to satisfy their statutory minimum tax obligation associated with the vesting of restricted common shares of beneficial interest.

Noncontrolling interests in First Potomac Realty Investment Limited Partnership, our operating partnership (the “Operating Partnership”), 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, 2017 and 2016, we recorded adjustments of $3.7 million and $2.9 million, respectively, to present certain common Operating Partnership units at the greater of their carrying value or redemption value.

At March 31, 2017 and 2016, we accrued $4.6 million and $10.3 million, respectively, of capital expenditures related to rental property and furniture, fixtures and equipment in accounts payable. At March 31, 2017 and 2016, we accrued $0.6 million and $4.5 million, respectively, of capital expenditures related to development and redevelopment in accounts payable.

8

FIRST POTOMAC REALTY TRUST AND SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(unaudited)

(1) Description of Business

First Potomac Realty Trust (the “Company”) is a leader in the ownership, management, redevelopment and development of office and business park properties in the greater Washington, D.C. region. The Company’s focus is owning and operating properties that the Company believes can benefit from its market knowledge and intensive operational skills with a focus on increasing 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. 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.

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 our Operating Partnership. We are the sole general partner of, and, as of March 31, 2017, owned 95.8% 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 that are owned by unrelated parties.

At March 31, 2017, we wholly owned properties totaling 6.0 million square feet and had a noncontrolling ownership interest in properties totaling an additional 0.4 million square feet through two unconsolidated joint ventures. We also owned land that can support 0.4 million square feet of additional development. Our consolidated properties were 92.4% occupied by 372 tenants at March 31, 2017. We do not include the square footage of properties in development or redevelopment, which totaled 0.1 million square feet at March 31, 2017, in our occupancy calculation. We derive substantially all of our revenue from leases of space within our properties. As of March 31, 2017, our largest tenant was the U.S. Government, which accounted for 14.0% of our total annualized cash basis rent, and the U.S. Government combined with government contractors accounted for 20.9% of our total annualized cash basis rent as of March 31, 2017. 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 our accounts and the accounts of our Operating Partnership, which we consider to be a variable interest entity (“VIE”), and the subsidiaries in which we or our 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, 2016 and as updated from time to time in our other filings with 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, 2017 and the results of our operations, our comprehensive income (loss) and our cash flows for the three months ended March 31, 2017 and 2016. 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 unaudited 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 unaudited 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, 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, when acquired in a business combination, or initial cost when constructed or acquired in an asset purchase. 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 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. 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 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 have made the decision to dispose of the building, our Board of Trustees or a designated delegate has approved the sale, there is a binding contract pursuant to which the buyer has significant money at risk, or 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. We will cease recording depreciation on a building once it has been classified as held-for-sale.

We will also determine whether the disposal of a building qualifies as a discontinued operation in accordance with GAAP by assessing whether the disposal of the building, or group of buildings, represents a strategic shift that has, or will have, a major effect on the Company’s operations or financial results. If the building does not qualify as a discontinued operation in accordance with GAAP, we will classify the building’s operating results, together with any impairment charges and any gains or losses on the sale of the building, in continuing operations for all periods presented in our consolidated statements of operations. We will classify the assets and liabilities related to the building as held-for-sale in our consolidated balance sheet for the period the held-for-sale criteria were met.

If the building does qualify as a discontinued operation under GAAP, we will classify the building’s operating results, together with any impairment charges and any gains or losses on the sale of the building, in discontinued operations in our consolidated

10

statements of operations for all periods presented and classify the assets and liabilities related to the building as held-for-sale in our consolidated balance sheets for the periods presented. Interest expense is reclassified to discontinued operations only to the extent the disposed or 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.

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 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 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, 2017 and 2016. Capitalization of interest ends 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 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) Application of New Accounting Standards

In January 2017, we adopted Accounting Standards Update No. 2014-15, Disclosure of Uncertainties about an Entity’s Ability to Continue as a Going Concern (“ASU 2014-15”), which requires an entity to evaluate whether conditions or events, in the aggregate, raise substantial doubt about the entity’s ability to continue as a going concern for one year from the date the financial statements are issued or are available to be issued. The adoption of ASU 2014-15 did not have a material impact on our unaudited condensed consolidated financial statements and related disclosures.

In January 2017, we adopted Accounting Standards Update No. 2016-09, Improvements to Employee Share-Based Payment Accounting (“ASU 2016-09”), which is intended to simplify several aspects of the accounting for employee share-based payment transactions, including income tax consequences, classification of awards as either equity or liabilities and classification on the statement of cash flows. ASU 2016-09 requires us to classify cash payments made on behalf of employees for taxes owed on the vesting of restricted common shares, for which we withhold vested common shares owed to the employee in an amount that equates to the value of the employee’s tax obligation, as a financing activity on our statements of cash flows. We elected to adopt ASU 2016-09 retrospectively and the adoption of ASU 2016-09 did not have a material impact on our unaudited condensed consolidated financial statements and related disclosures.

In January 2017, we adopted Accounting Standards Update No. 2016-17, Consolidation (Topic 810): Interests Held through Related Parties That Are under Common Control (“ASU 2016-17”), which requires a single decision maker or service provider, in evaluating whether it is the primary beneficiary, to consider on a proportionate basis indirect interests held through related parties under common control. The adoption of ASU 2016-17 did not have a material impact on our unaudited condensed consolidated financial statements and related disclosures.

In January 2017, we adopted Accounting Standards Update No. 2017-01, Business Combinations (Topic 805): Clarifying the Definition of a Business (“ASU 2017-01”), which was issued by the Financial Accounting Standards Board (“FASB”) in January 2017. ASU 2017-01 provides a new framework for determining whether transactions should be accounted for as acquisitions (or disposals) of assets or businesses. We anticipate ASU 2017-01 will change our accounting treatment of future property acquisitions; however, the adoption of ASU 2017-01 did not have a material impact on our unaudited condensed consolidated financial statements and related disclosures.

In May 2014, the FASB issued Accounting Standards Update No. 2014-09, Revenue from Contracts with Customers (“ASU 2014-09”), which requires an entity to recognize the amount of revenue to which it expects to be entitled for the transfer of promised goods or services to customers and will replace most existing revenue recognition guidance when it becomes effective. In July

11

2015, the FASB deferred by one year the mandatory effective date of ASU 2014-09 from January 1, 2017 to January 1, 2018. Early adoption is permitted, but not prior to the original effective date of January 1, 2017. ASU 2014-09 permits the use of either the retrospective or cumulative effect transition method. We have begun to evaluate each of the revenue streams under the new model and the pattern of recognition is not expected to change significantly. We have not yet selected a transition method and are evaluating the impact that ASU 2014-09 will have on our consolidated financial statements and related disclosures.

In January 2016, the FASB issued Accounting Standards Update No. 2016-01, Recognition and Measurement of Financial Assets and Financial Liabilities (“ASU 2016-01”), which requires, among other things, entities to use the exit price notion when measuring the fair value of financial instruments for disclosure purposes and eliminates the requirement for public business entities to disclose the method(s) and significant assumptions used to estimate the fair value disclosed for financial instruments measured at amortized cost on the balance sheet. ASU 2016-01 is effective for periods beginning after December 15, 2017; early adoption is not permitted. The guidance is not expected to have a material impact on our consolidated financial statements and related disclosures.

In February 2016, the FASB issued Accounting Standards Update No. 2016-02, Leases (“ASU 2016-02”), which requires a lessee to record on the balance sheet a right-of-use asset with a corresponding lease liability created by lease terms of more than 12 months. Additional qualitative and quantitative disclosures will also be required. The guidance will become effective for periods beginning after December 15, 2018 and will be applied using a modified retrospective transition method. We are currently evaluating the impact that ASU 2016-02 will have on our consolidated financial statements and related disclosures.

In August 2016, the FASB issued Accounting Standards Update No. 2016-15, Classification of Certain Cash Receipts and Cash Payments (“ASU 2016-15”). The guidance addresses eight classification issues related to the statement of cash flows, including debt prepayment or debt extinguishment costs and distributions received from equity-method investees. The guidance will become effective for periods beginning after December 15, 2017 and early adoption is permitted. ASU 2016-15 requires the use of a retrospective transition method to each period presented. If such retrospective transition is impracticable for certain issues, the adoption of ASU 2016-15 for the applicable issues may be applied prospectively as of the earliest date practicable. The guidance is not expected to have a material impact on our consolidated financial statements or related disclosures.

In November 2016, the FASB issued Accounting Standards Update No. 2016-18, Statement of Cash Flows (Topic 230): Restricted Cash (“ASU 2016-18”), which requires companies to include cash and cash equivalents that have restrictions on withdrawal or use in total cash and cash equivalents on the statement of cash flows. ASU 2016-18 is effective for periods beginning after December 15, 2017 and early adoption is permitted. The guidance is not expected to have a material impact on our consolidated financial statements and related disclosures.

In January 2017, the FASB issued Accounting Standards Update No. 2017-04, Intangibles - Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment (“ASU 2017-04”), which requires an entity to no longer perform a hypothetical purchase price allocation to measure goodwill impairment. Instead, impairment will be measured using the difference between the carrying amount and the fair value of the reporting unit. ASU 2017-04 is effective for periods beginning after December 15, 2019 and early adoption is permitted for measurement dates after January 1, 2017. The guidance is not expected to have a material impact on our consolidated financial statements and related disclosures.

In February 2017, the FASB issued Accounting Standards Update No. 2017-05, Other Income - Gains and Losses from the Derecognition of Nonfinancial Assets (Subtopic 610-20): Clarifying the Scope of Asset Derecognition Guidance and Accounting for Partial Sales of Nonfinancial Assets (“ASU 2017-05”), which clarifies the guidance in Subtopic 610-20 on accounting for derecognition of a nonfinancial asset. The update also defines in-substance nonfinancial assets and includes guidance on partial sales of nonfinancial assets. The amendments in ASU 2017-05 are to be applied at the same time that ASU 2014-09 is applied. We are currently evaluating the impact that ASU 2017-05 will have on our consolidated financial statements and related disclosures.

(e) Reclassifications

Certain prior year amounts have been reclassified to conform to the current year presentation, primarily as a result of adopting ASU 2016-09 in January 2017. See note 2(d), Summary of Significant Accounting Policies - Application of New Accounting Standards for more information.

12

(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 and non-vested 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 (dollars in thousands, except per share amounts):

	Three Months Ended March 31,
	2017			2016
Numerator for basic and diluted earnings per common share:
Net income (loss)	$	45,029		$	(101	)
Less: Net (income) loss attributable to noncontrolling interests	(1,884		)	147
Net income attributable to First Potomac Realty Trust	43,145			46
Less: Dividends on preferred shares	—			(2,248		)
Less: Issuance costs of redeemed preferred shares (1)	—			(1,904		)
Net income (loss) attributable to common shareholders	43,145			(4,106		)
Less: Allocation to participating securities	(55		)	(73		)
Net income (loss) attributable to common shareholders	$	43,090		$	(4,179	)
Denominator for basic and diluted earnings per common share:
Weighted average common shares outstanding - basic	57,635			57,542
Weighted average common shares outstanding - diluted	57,907			57,542
Basic and diluted earnings per common share:
Net income (loss) attributable to common shareholders - basic	$	0.75		$	(0.07	)
Net income (loss) attributable to common shareholders - diluted	$	0.74		$	(0.07	)

⁽¹⁾  Represents the original issuance costs associated with the redemption of 2.2 million7.750% Series A Cumulative Redeemable Perpetual Preferred Shares (the “7.750% Series A Preferred Shares”) during the three months ended March 31, 2016.

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,
	2017	2016
Stock option awards	879	1,018
Non-vested share awards	595	484
	1,474	1,502

13

(4) Rental Property

Rental property represents wholly-owned buildings and related improvements, net of accumulated depreciation, and developable land. All of our rental properties are located within the greater Washington, D.C. region. Rental property consists of the following (dollars in thousands):

	March 31, 2017			December 31, 2016(1)
Land and land improvements	$	269,920		$	282,923
Buildings and improvements	766,394			824,867
Construction in progress	29,793			4,605
Tenant improvements	185,264			189,031
Furniture, fixtures and equipment	374			408
	1,251,745			1,301,834
Less: accumulated depreciation	(227,140		)	(242,562		)
	$	1,024,605		$	1,059,272

⁽¹⁾ Excludes rental property totaling $13.2 million at December 31, 2016 related to One Fair Oaks, which was classified as held-for-sale at December 31, 2016 and was sold on January 9, 2017.

Development and Redevelopment Activity

We will place completed development and redevelopment assets in-service upon the earlier of one year after major construction activity is deemed to be substantially complete or upon occupancy. We construct office buildings and/or business parks on a build-to-suit basis or with the intent to lease upon completion of construction. At March 31, 2017, we owned developable land that can accommodate 0.4 million square feet of additional building space, of which 34 thousand is located in the Washington, D.C. reporting segment, 0.1 million in the Maryland reporting segment, 0.2 million in the Northern Virginia reporting segment and 0.1 million in the Southern Virginia reporting segment.

In March 2017, the sole tenant of 540 Gaither Road at Redland (“Redland I”) exercised its early termination option and vacated the 133,895 square-foot building, which is located in our Maryland reporting segment. Upon the tenant vacating Redland I, the building was placed into redevelopment. At March 31, 2017, our total investment in the building under redevelopment was $23.6 million, which included the $23.0 million total original cost basis of the building and land. The majority of costs incurred as of March 31, 2017 in excess of the original cost basis of the building and land related to site planning and design costs.

During the first quarter of 2017, we did not place in-service any completed development or redevelopment space. At March 31, 2017, we did not have any completed development or redevelopment space that had yet to be placed in-service.

(5) Investment in Affiliates

We own an interest in several unconsolidated joint ventures, two of which currently 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 non-controlled joint ventures are not consolidated within our unaudited condensed consolidated financial statements. Our investments in these joint ventures are recorded as “Investment in affiliates” on our consolidated balance sheets. On March 7, 2017, three of our unconsolidated joint ventures collectively sold Aviation Business Park, a 120,284 square-foot office building, and Rivers Park I and II, a 307,984 square-foot business park, which were all located in our Maryland reporting segment. Based on our percentage ownership of the joint ventures, our share of gross proceeds from the sale totaled $19.0 million, which generated $18.4 million of net proceeds. We used the net proceeds from the sale to repay $7.0 million (our proportionate share) of mortgage debt encumbering Rivers Park I and II, and the remainder was used to repay a portion of the outstanding balance under our unsecured revolving credit facility. We have had, and will have, no continuing involvement in the ownership decisions of any of the unconsolidated joint ventures’ disposed properties subsequent to their disposal.

14

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

	Reporting Segment	Ownership Interest	Investment at March 31, 2017		Investment at December 31, 2016
Prosperity Metro Plaza	Northern Virginia	51%	$	26,772	$	26,414
1750 H Street, NW	Washington, D.C.	50%	14,594		14,624
Aviation Business Park(1)	Maryland	50%	482		5,941
Rivers Park I and II(1)(2)	Maryland	25%	466		2,413
			$	42,314	$	49,392

⁽¹⁾ The unconsolidated joint ventures that owned Aviation Business Park and Rivers Park I and II sold these properties on March 7, 2017. Our investment in these joint ventures at March 31, 2017 is primarily comprised of our share of cash that has not yet been distributed.

⁽²⁾   Rivers Park I and Rivers Park II were owned through two separate unconsolidated joint ventures.

The following table provides a summary of the mortgage debt held by our unconsolidated joint ventures (dollars in thousands):

	FPO Ownership	Effective Interest Rate	Maturity Date	Principal Balance at March 31, 2017(1)		Principal Balance at December 31, 2016(1)
Rivers Park I and II (2)	25%	LIBOR + 1.90%(3)	September 2017	$	—	$	28,000
1750 H Street, NW(4)	50%	3.92%	August 2024	32,000		32,000
Prosperity Metro Plaza(5)	51%	3.91%	December 2029	50,000		50,000
Weighted Average / Total		3.91%		$	82,000	$	110,000

⁽¹⁾  Reflects the entire balance of the debt secured by the properties, not our portion of the debt.

⁽²⁾  The unconsolidated joint ventures that owned Rivers Park I and II sold these properties on March 7, 2017. The unconsolidated joint venture partners used net proceeds from the sale to repay the mortgage debt encumbering the properties. At December 31, 2016, $2.8 million of the outstanding mortgage balance was recourse to us.

⁽³⁾  At March 31, 2017, LIBOR was 0.98%. All references to LIBOR in the condensed consolidated financial statements refer to one-month LIBOR.

⁽⁴⁾  The loan requires interest-only payments with a constant interest rate over the life of the loan. The loan is repayable in full, without penalty, on or after August 1, 2021.

⁽⁵⁾  The loan requires interest-only payments through December 2024, at which time the loan requires principal and interest payments through its maturity date. The loan is repayable in full, without penalty, on or after June 1, 2029.

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

	March 31, 2017		December 31, 2016
Assets:
Rental property, net	$	144,065	$	189,245
Cash and cash equivalents	11,122		9,887
Other assets	16,472		20,726
Total assets	171,659		219,858
Liabilities:
Mortgage loans, net(1)(2)	81,416		109,372
Other liabilities	6,503		8,674
Total liabilities	87,919		118,046
Net assets	$	83,740	$	101,812

⁽¹⁾  Of the total mortgage debt that encumbers our unconsolidated properties, none was recourse to us at March 31, 2017 and $2.8 million was recourse to us at December 31, 2016.

⁽²⁾  Mortgage loans, net at both March 31, 2017 and December 31, 2016 included $0.6 million of unamortized deferred financing costs

15

Our share of earnings or losses related to our unconsolidated joint ventures is recorded in our consolidated statements of operations as “Equity in earnings of affiliates.” The following table summarizes the results of operations of our unconsolidated joint ventures for the periods presented, of which, our proportionate share is reflected in “Equity in earnings of affiliates” in our consolidated statements of operations based on our varying ownership interests in the unconsolidated joint ventures (dollars in thousands):

	Three Months Ended March 31,
	2017			2016
Total revenues	$	5,679		$	6,290
Total operating expenses	(1,937		)	(2,166		)
Net operating income	3,742			4,124
Depreciation and amortization	(1,863		)	(1,966		)
Interest expense, net	(962		)	(993		)
Gain on sale of rental property	10,324			—
Net income	$	11,241		$	1,165

The following table summarizes the results of operations of Aviation Business Park and Rivers Park I and II, which were sold in March 2017, of which, our proportionate share is reflected in “Equity in earnings of affiliates” in our consolidated statements of operations based on our varying ownership interests in the unconsolidated joint ventures that owned the respective properties (dollars in thousands):

	Three Months Ended March 31,
	2017			2016
Total revenues	$	1,113		$	1,631
Total operating expenses	(275		)	(641		)
Net operating income	838			990
Depreciation and amortization	(420		)	(643		)
Interest expense, net	(146		)	(175		)
Income from operations of disposed properties	272			172
Gain on sale of rental property	10,324			—
Net income	$	10,596		$	172

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 for the three months ended March 31, 2017 and 2016, respectively, which are reflected within “Tenant reimbursements and other revenues” on our consolidated statements of operations.

(6) Dispositions

We will report a disposed or held-for-sale property or group of properties in discontinued operations only if the disposal represents a strategic shift that has, or will have, a major effect on our operations and financial results. All other disposed properties will have their operating results reflected within continuing operations on our consolidated statements of operations for all periods presented.

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. Other than the properties discussed below in this note 6, Dispositions, and in note 5, Investment in Affiliates, we did not dispose of or enter into any agreements to sell any other properties during the three months ended March 31, 2017 and 2016.

16

Disposed or Held-for-Sale Properties within Continuing Operations

The following table is a summary of property dispositions whose operating results are included in continuing operations in our consolidated statements of operations for the periods presented (dollars in thousands):

Property	Reporting Segment	Disposition Date	Property Type	Square Feet	Net Sale Proceeds
Plaza 500	Northern Virginia	2/17/2017	Industrial	502,830	$	72,499
One Fair Oaks (1)	Northern Virginia	1/9/2017	Office	214,214	13,255
Storey Park(2)	Washington, D.C.	7/25/2016	Land	—	52,659
NOVA Non-Core Portfolio(3)	Northern Virginia	3/25/2016	Various	945,745	90,501

⁽¹⁾  One Fair Oaks was classified as held-for-sale at December 31, 2016, and the building was vacant at the time of sale.

⁽²⁾   This development site could have supported up to 712,000 rentable square feet.

⁽³⁾   Consists of Van Buren Office Park, Herndon Corporate Center, Windsor at Battlefield, Reston Business Campus, Enterprise Center, Gateway Centre Manassas, Linden Business Center and Prosperity Business Center (collectively, the “NOVA Non-Core Portfolio”).

On February 17, 2017, we sold Plaza 500 for net proceeds of $72.5 million and recorded a gain on sale of $42.7 million. The sale of Plaza 500 represented the divestiture of our last industrial property. We used the proceeds to pay down a portion of the outstanding balance under our unsecured revolving credit facility.

On January 9, 2017, we sold One Fair Oaks for net proceeds of $13.3 million and recorded a gain on sale of $0.1 million. We used the proceeds to pay down a portion of the outstanding balance under our unsecured revolving credit facility. One Fair Oaks met our held-for-sale criteria at December 31, 2016 and, therefore, the assets of the building were classified within “Assets-held-for-sale” on our consolidated balance sheet at December 31, 2016. The assets classified within held-for-sale as of December 31, 2016 primarily consisted of $17.6 million in building and building improvements, $1.6 million of land, and $6.0 million of accumulated depreciation. No material liabilities were classified as held-for-sale at December 31, 2016.

The following table summarizes the aggregate results of operations for the disposed or held-for-sale properties that are included in continuing operations for the periods presented (dollars in thousands):

	Three Months Ended March 31,
	2017			2016
Revenues	$	804		$	7,043
Property operating expenses	(304		)	(2,823		)
Depreciation and amortization	(289		)	(1,343		)
Interest expense	—			(184		)
Loss on debt extinguishment	—			(48		)
Income from operations of disposed property	211			2,645
Gain (loss) on sale of rental property(1)	42,799			(1,155		)
Net income from continuing operations	$	43,010		$	1,490

⁽¹⁾ During the first quarter of 2017, we recorded a $0.1 million gain on the sale of One Fair Oaks and a $42.7 million gain on the sale of Plaza 500. During the first quarter of 2016, we recorded a $1.2 million loss on the sale of the NOVA Non-Core Portfolio.

17

(7) Debt

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

	March 31,   2017(1)		December 31, 2016(1)
Mortgage loans, net, effective interest rates ranging from 4.22% to 6.01%, maturing at various dates through September 2030(2)(3)	$	295,523	$	296,212
Unsecured term loan, net, effective interest rates ranging from LIBOR plus 1.45% to LIBOR plus 1.80%, with staggered maturity dates ranging from December 2020 to December 2022(2)	299,433		299,404
Unsecured revolving credit facility, net, effective interest rate of LIBOR plus 1.50%, maturing December 2019(2)	48,758		141,555
Total	$	643,714	$	737,171

⁽¹⁾  The balances include a total of $5.8 million and $6.2 million of unamortized deferred financing costs at March 31, 2017 and December 31, 2016, respectively.

⁽²⁾  At March 31, 2017, LIBOR was 0.98%.

⁽³⁾  The balances at March 31, 2017 and December 31, 2016 include two construction loans.

(a) Mortgage Loans

The following table provides a summary of our mortgage debt, which includes two construction loans (dollars in thousands):

Encumbered Property	Contractual Interest Rate		Effective Interest Rate			Maturity Date	March 31,   2017			December 31, 2016
440 First Street, NW Construction Loan(1)(2)	LIBOR + 2.50%		LIBOR + 2.50%			May 2017	$	32,216		$	32,216
Redland II and III	4.20	%	4.64	%		November 2017	62,873			63,214
Northern Virginia Construction Loan(3)	LIBOR + 1.85%		LIBOR + 1.85%			September 2019	34,584			34,584
840 First Street, NE	5.72	%	6.01	%		July 2020	35,023			35,201
Battlefield Corporate Center	4.26	%	4.40	%		November 2020	3,309			3,353
1211 Connecticut Avenue, NW	4.22	%	4.47	%		July 2022	28,347			28,503
1401 K Street, NW	4.80	%	4.93	%		June 2023	35,384			35,556
11 Dupont Circle, NW	4.05	%	4.22	%		September 2030	66,780			66,780
Principal balance			4.45	%	(4)		298,516			299,407
Unamortized deferred financing costs							(2,993		)	(3,195		)
Total balance, net							$	295,523		$	296,212

⁽¹⁾  At March 31, 2017, LIBOR was 0.98%.

⁽²⁾  This construction loan is collateralized by 440 First Street, NW. In May 2016, we extended the maturity date by one year to May 30, 2017. 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, 2017, per the terms of the loan agreement, 50% of the outstanding principal balance and all of the outstanding accrued interest were recourse to us.

⁽³⁾  This construction loan has a borrowing capacity of up to $43.7 million and is collateralized by the NOVA build-to-suit, which was placed in-service in the third quarter of 2016. We can repay all or a portion of the Northern Virginia Construction Loan, without penalty, at any time during the term of the loan.

⁽⁴⁾  Represents the weighted average interest rate on total mortgage debt.

18

(b) Unsecured Term Loan and Unsecured Revolving Credit Facility

The table below shows the outstanding balances and the interest rates of the three tranches of the $300.0 million unsecured term loan and the unsecured revolving credit facility at March 31, 2017 and December 31, 2016 (dollars in thousands):

	Maturity Date	Interest Rate(1)	March 31, 2017			December 31, 2016
Unsecured Term Loan
Tranche A	December 2020	LIBOR + 1.45%	$	100,000		$	100,000
Tranche B	June 2021	LIBOR + 1.45%	100,000			100,000
Tranche C	December 2022	LIBOR + 1.80%	100,000			100,000
Total			300,000			300,000
Unamortized deferred financing costs			(567		)	(596		)
Total, net			$	299,433		$	299,404
Unsecured Revolving Credit Facility
Outstanding borrowings	December 2019(2)	LIBOR + 1.50% (3)	$	51,000		$	144,000
Unamortized deferred financing costs			(2,242		)	(2,445		)
Total, net			$	48,758		$	141,555

⁽¹⁾  Reflects the interest rate spreads at March 31, 2017. At March 31, 2017, LIBOR was 0.98%. The interest rate spread is subject to change based on our maximum total indebtedness ratio. For more information, see note 7(d), Debt – Financial Covenants.

⁽²⁾  The maturity date of the unsecured revolving credit facility may be extended for two, six-month terms at our option.

⁽³⁾  At March 31, 2017, our outstanding borrowings under the unsecured revolving credit facility had a weighted average interest rate of 2.5%.

During the three months ended March 31, 2017, we repaid $97.0 million of the outstanding balance under the unsecured revolving credit facility. In January 2017, we used the net proceeds from the sale of One Fair Oaks and available cash to repay $14.0 million of the outstanding balance under our unsecured revolving credit facility. In February 2017, we used a portion of the net proceeds from the sale of Plaza 500 to repay $70.0 million of the outstanding balance under our unsecured revolving credit facility. In March 2017, we used our proportionate share of the net proceeds from the sale of Aviation Business Park and Rivers Park I and II to repay $7.0 million of the mortgage loan that encumbered Rivers Park I and II (our proportionate share) and the remainder was used, together with available cash, to repay $13.0 million of the outstanding balance under our unsecured revolving credit facility. During the three months ended March 31, 2017, we borrowed $4.0 million under the unsecured revolving credit facility for general corporate purposes.

For the three months ended March 31, 2017, our weighted average borrowings outstanding under the unsecured revolving credit facility were $96.6 million with a weighted average interest rate of 2.3% compared with weighted average borrowings of $169.5 million and a weighted average interest rate of 1.9% for the three months ended March 31, 2016. Our maximum outstanding borrowings were $144.0 million and $193.0 million during the three months ended March 31, 2017 and 2016, respectively.

As of the date of this filing, we had $51.0 million outstanding and $172.0 million available capacity under the unsecured revolving credit facility. We are required to pay a commitment fee at an annual rate of 0.15% of the unused capacity if our usage exceeds 50% of our total capacity under the revolving credit facility, or 0.25% if our usage does not exceed 50%.

(c) Interest Rate Swap Agreements

At March 31, 2017, we had nine interest rate swap agreements outstanding that collectively fixed LIBOR, at a weighted average interest rate of 1.4%, on $240.0 million of our variable rate debt. See note 8, Derivative Instruments, for more information about our interest rate swap agreements.

(d) Financial Covenants

The credit agreement governing our unsecured revolving credit facility and unsecured term loan contains various restrictive covenants, including with respect to liens, indebtedness, investments, distributions, mergers and asset sales. The agreement also includes customary events of default, the occurrence of which, following any applicable cure period, would permit the lenders to,

19

among other things, declare the principal, accrued interest and other obligations under the agreement to be immediately due and payable.

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. These covenants relate to our allowable leverage, minimum tangible net worth, fixed charge coverage and other financial metrics. As of March 31, 2017, we were in compliance with the covenants of our amended, restated and consolidated unsecured revolving credit facility and unsecured term loan, the 440 First Street, NW Construction Loan and the Northern Virginia 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, 2017, the applicable interest rate spreads on the unsecured revolving credit facility and the unsecured term loan will remain unchanged.

(8) 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 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.

20

At March 31, 2017, we had nine interest rate swap agreements outstanding that collectively fixed LIBOR, at a weighted average interest rate of 1.4%, on $240.0 million of our variable rate debt. Our interest rate swap agreements are summarized below (dollars in thousands):

Maturity Date	Notional Amount		Interest Rate Contractual Component	Fixed LIBOR Interest Rate
July 2017	$	30,000	LIBOR	2.093	%
July 2017	30,000		LIBOR	2.093	%
July 2017	25,000		LIBOR	1.129	%
July 2017	12,500		LIBOR	1.129	%
July 2017	50,000		LIBOR	0.955	%
July 2018	12,500		LIBOR	1.383	%
July 2018	30,000		LIBOR	1.660	%
July 2018	25,000		LIBOR	1.394	%
July 2018	25,000		LIBOR	1.135	%
Total/Weighted Average	$	240,000		1.442	%

Our interest rate swap agreements are designated as cash flow hedges and we record the effective portion of 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 the effective portion of any unrealized losses within “Accumulated other comprehensive loss” and “Accounts payable and other liabilities” 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, 2017 and 2016.

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 losses as an increase to interest expense of $0.4 million and $0.8 million for the three months ended March 31, 2017 and 2016, respectively. As of March 31, 2017, we estimated that $0.4 million of our accumulated other comprehensive loss will be reclassified as an increase to interest expense over the following twelve months.

(9) Fair Value Measurements

Our application of GAAP 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).

21

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, 2017 and December 31, 2016 (dollars in thousands):

	Balance at    March 31, 2017		Level 1		Level 2		Level 3
Recurring Measurements:
Derivative instrument-swap assets	$	68	$	—	$	68	$	—
Derivative instrument-swap liabilities	378		—		378		—
	Balance at    December 31, 2016		Level 1		Level 2		Level 3
Recurring Measurements:
Derivative instrument-swap liabilities	$	906	$	—	$	906	$	—

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, 2017 and 2016. 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, 2017 and 2016.

Interest Rate Derivatives

At March 31, 2017, we had hedged $240.0 million of our variable rate debt through nine interest rate swap agreements. See note 8, Derivative Instruments, for more information about our interest rate swap agreements.

The interest rate derivatives are fair valued based on prevailing market yield curves on the measurement date and also 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. 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 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.

22

The carrying amount and estimated fair value of our debt instruments are as follows (dollars in thousands):

	March 31, 2017				December 31, 2016
	Carrying Value(1)		Fair Value		Carrying Value(1)		Fair Value
Financial Liabilities:
Mortgage debt	$	298,516	$	296,923	$	299,407	$	300,927
Unsecured term loan	300,000		300,000		300,000		300,000
Unsecured revolving credit facility	51,000		51,000		144,000		144,000
Total	$	649,516	$	647,923	$	743,407	$	744,927

⁽¹⁾  The debt balances exclude a combined total of $5.8 million and $6.2 million of unamortized deferred financing costs at March 31, 2017 and December 31, 2016, respectively.

(10) Equity

In December 2015, our Board of Trustees authorized the redemption of some or all of our 6.4 million outstanding 7.750% Series A Preferred Shares. On January 19, 2016 and April 27, 2016, we used proceeds from dispositions to redeem 2.2 million shares and 3.6 million shares, respectively, of our 7.750% Series A Preferred Shares at a redemption price of $25.00 per share, plus accrued dividends up to the applicable dates of redemption. On July 6, 2016, we used proceeds from the repayment of a mezzanine loan to redeem the remaining 0.6 million outstanding shares of our 7.750% Series A Preferred Shares at a redemption price of $25.00 per share, plus accrued dividends up to the date of redemption. The 7.750% Series A Preferred Shares (NYSE: FPO-PA) were delisted from trading on the New York Stock Exchange upon redemption of the remaining 0.6 million outstanding shares on July 6, 2016.

On January 24, 2017, we declared a dividend of $0.10 per common share, equating to an annualized dividend of $0.40 per common share. The dividend was paid on February 15, 2017 to common shareholders of record as of February 8, 2017. We record dividends on non-vested share awards as a reduction of shareholders’ equity. Dividends paid on non-vested share awards that subsequently do not vest are recorded as compensation expense in the period in which they are forfeited or expire. For each dividend paid by us on our common shares and, when applicable, preferred shares, the Operating Partnership distributes an equivalent distribution on our common and preferred Operating Partnership units, respectively.

On April 25, 2017, we declared a dividend of $0.10 per common share, equating to an annualized dividend of $0.40 per common share. The dividend will be paid on May 15, 2017 to common shareholders of record as of May 8, 2017.

Our unsecured revolving credit facility and unsecured term loan, the 440 First Street, NW Construction Loan and the Northern Virginia Construction Loan contain certain restrictions that include, among other things, requirements to maintain specified coverage ratios and other financial covenants, which may limit our ability to make distributions to our common and preferred shareholders, except for distributions required to maintain our qualification as a REIT.

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):

	Total Equity			Redeemable noncontrolling interests
Balance at December 31, 2016	$	436,383		$	28,244
Net income	43,145			1,884
Changes in ownership, net	3,076			(2,382		)
Distributions to owners	(5,815		)	(255		)
Other comprehensive income, net	571			25
Balance at March 31, 2017	$	477,360		$	27,516

23

	First Potomac Realty Trust			Non-redeemable noncontrolling interests(1)			Total Equity			Redeemable noncontrolling interests
Balance at December 31, 2015	$	624,528		$	800		$	625,328		$	28,813
Net income (loss)	46			(14		)	32			(133		)
Changes in ownership, net	(53,145		)	—			(53,145		)	(1,644		)
Distributions to owners	(10,948		)	—			(10,948		)	(393		)
Other comprehensive loss, net	(826		)	—			(826		)	(36		)
Balance at March 31, 2016	$	559,655		$	786		$	560,441		$	26,607

⁽¹⁾  Our 97% owned consolidated joint venture sold Storey Park on July 25, 2016, at which time all assets and liabilities owned by the joint venture were either sold or settled at the time of disposition and the remaining proceeds from the sale were distributed to the joint venture partners in accordance with the terms of the joint venture agreement. See note 6, Dispositions, for more information.

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

	2017			2016
Beginning balance at January 1,	$	(844	)	$	(2,360	)
Net unrealized gain (loss) on derivative instruments	596			(862		)
Net (gain) loss attributable to noncontrolling interests	(25		)	36
Ending balance at March 31,	$	(273	)	$	(3,186	)

(11) 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, 2017, 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 $26.2 million. At March 31, 2017 and December 31, 2016, we recorded adjustments of $3.7 million and $6.1 million, respectively, to present certain common Operating Partnership units at the greater of their carrying value or redemption value.

At March 31, 2017, 2,545,602 of the total common Operating Partnership units, or 4.2%, were not owned by us. During the three months ended March 31, 2017, no common Operating Partnership units were redeemed with available cash. During the three months ended March 31, 2016, 38,539 common Operating Partnership units were redeemed with available cash. No common Operating Partnership units were redeemed for common shares during the three months ended March 31, 2017 or 2016.

(b) Noncontrolling Interests in a 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

24

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 (income) loss attributable to noncontrolling interests” on our consolidated statements of operations.

On August 4, 2011, we formed a joint venture, in which we had a 97% interest, with an affiliate of Perseus Realty, LLC to acquire Storey Park in our Washington, D.C. reporting segment, which was placed into development in August 2013. Storey Park was sold July 25, 2016, at which time all assets and liabilities owned by the joint venture were either sold or settled at the time of disposition and the remaining proceeds from the sale were distributed to the joint venture partners in accordance with the terms of the joint venture agreement. See note 6, Dispositions, for more information.

(12) 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.

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. During the first quarter of 2017, we granted a total of 160,349 non-vested time-based common shares to our officers and employees. The time-based awards will vest ratably on an annual basis over a three-year period from the grant date. In February 2017, we granted a total of 257,937 non-vested performance-based common shares to our officers. The number of shares that will be earned under the February 2017 performance-based awards will be determined at the end of 2019, based upon the achievement of specified market performance goals measured over the performance period from January 1, 2017 through December 31, 2019. Of the shares earned, 50% will vest on February 1, 2020 and the remaining earned shares will vest on February 1, 2021. Any shares that are not earned will be forfeited.

We recognized compensation expense associated with all of our non-vested common share awards of $0.8 million and $0.4 million during the three months ended March 31, 2017 and 2016. 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 distributions over earnings related to participating securities is shown as a reduction in total earnings attributable to common shareholders in our computation of EPS.

A summary of our non-vested common share awards at March 31, 2017 is as follows:

	Non-vested Common Shares		Weighted Average Grant Date Fair Value
Non-vested at December 31, 2016	711,374		$	9.85
Granted	418,286		8.54
Vested	(80,179	)	10.99
Expired	(1,630	)	12.38
Forfeited	(991	)	11.03
Non-vested at March 31, 2017	1,046,860		$	9.23

We value our non-vested time-based share awards at the grant date fair value, which is the market price of our common shares. For the non-vested performance-based common share awards granted in February 2017, we used a Monte Carlo Simulation (risk-neutral approach) to determine the number of shares that may be issued pursuant to the award as these awards were deemed to have a market condition. The risk-free interest rate assumptions used in the Monte Carlo Simulation were determined based on the zero coupon risk-free rate for the time frame of 0.25 years to 3 years, which ranged from 0.70% to 1.60%, respectively. The volatility used for our common share price in the Monte Carlo Simulation varied between 25.82% and 22.93%. Based on the Monte Carlo Simulation, the weighted average grant date fair value of the February 2017 non-vested performance-based common share awards was $7.11.

As of March 31, 2017, we had $7.6 million of unrecognized compensation cost related to non-vested common shares. We anticipate this cost will be recognized over a weighted-average period of 3.2 years.

25

(13) 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 rental property, 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 in their operating results other than the impact of straight-line revenue and the amortization of deferred market rents, deferred lease incentives and deferred tenant improvement reimbursements. There are no inter-segment sales or transfers recorded between segments.

26

The results of operations of our four reporting segments for the three months ended March 31, 2017 and 2016 are as follows (dollars in thousands):

	Three Months Ended March 31, 2017
	Washington, D.C.			Maryland(1)			Northern Virginia			Southern Virginia			Consolidated
Number of buildings	6			34			12			19			71
Square feet	917,643			1,886,177			1,168,990			2,023,858			5,996,668
Total revenues	$	11,722		$	11,235		$	7,312		$	7,554		$	37,823
Property operating expense	(3,139		)	(2,657		)	(1,956		)	(2,206		)	(9,958		)
Real estate taxes and insurance	(2,292		)	(982		)	(741		)	(646		)	(4,661		)
Total property operating income	$	6,291		$	7,596		$	4,615		$	4,702		23,204
Depreciation and amortization expense													(14,566		)
General and administrative													(4,497		)
Other income													40,888
Net income													$	45,029
Total assets (2)	$	443,800		$	322,738		$	260,564		$	159,487		$	1,203,997
Capital expenditures(3)	$	1,522		$	2,350		$	2,295		$	606		$	6,810
	Three Months Ended March 31, 2016
	Washington, D.C.			Maryland			Northern Virginia			Southern Virginia			Consolidated
Number of buildings	6			34			14			19			73
Square feet	918,566			1,885,630			1,715,730			2,023,858			6,543,784
Total revenues	$	11,290		$	11,587		$	12,307		$	7,513		$	42,697
Property operating expense	(2,968		)	(3,235		)	(3,320		)	(2,014		)	(11,537		)
Real estate taxes and insurance	(2,372		)	(929		)	(1,297		)	(618		)	(5,216		)
Total property operating income	$	5,950		$	7,423		$	7,690		$	4,881		25,944
Depreciation and amortization expense													(15,006		)
General and administrative													(4,578		)
Other expenses													(6,461		)
Net loss													$	(101	)
Total assets (2)	$	468,561		$	338,553		$	294,480		$	166,015		$	1,359,943
Capital expenditures(3)	$	4,910		$	959		$	15,757		$	897		$	22,643

⁽¹⁾  Redland I within our Maryland reporting segment was placed into redevelopment during March 2017.

⁽²⁾  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 note 5, Investment in Affiliates. Corporate assets not allocated to any of our reportable segments totaled $17.4 million and $92.3 million at March 31, 2017 and 2016, respectively.

⁽³⁾  Capital expenditures for corporate assets not allocated to any of our reportable segments were immaterial for the three months ended March 31, 2017 and $0.1 million for the three months ended March 31, 2016.

27

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

The following discussion and analysis of First Potomac Realty Trust’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 (the “Company”). 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, 2016 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, redevelopment and development of office and business park properties in the greater Washington, D.C. region. Our focus is owning and operating properties that we believe can benefit from our market knowledge and intensive operational skills with a focus on increasing 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 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 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, 2017, owned 95.8% 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 that are owned by unrelated parties.

At March 31, 2017, we wholly owned properties totaling 6.0 million square feet and had a noncontrolling ownership interest in properties totaling an additional 0.4 million square feet through two unconsolidated joint ventures. We also owned land that can support 0.4 million square feet of additional development. Our consolidated properties were 92.4% occupied by 372 tenants at March 31, 2017. We did not include the square footage of properties in development or redevelopment, which totaled 0.1 million square feet at March 31, 2017, in our occupancy calculation. We derive substantially all of our revenue from leases of space within our properties. As of March 31, 2017, our largest tenant was the U.S. Government, which accounted for 14.0% of our total annualized cash basis rent, and the U.S. Government combined with government contractors accounted for 20.9% of our total annualized cash basis rent as of March 31, 2017. 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 the contribution of assets to 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;

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

• develop and redevelop existing assets;

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

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

28

Executive Summary

For the three months ended March 31, 2017, net income attributable to common shareholders was $43.1 million, or $0.74 per diluted share, compared with a net loss attributable to common shareholders of $4.1 million, or $0.07 per diluted share, for the three months ended March 31, 2016. The increase in net income for the three months ended March 31, 2017 compared with the same period in 2016 was primarily due to a $42.7 million gain on the sale of Plaza 500 and a $3.8 million gain (our proportionate share) on our unconsolidated joint ventures’ sale of Aviation Business Park and Rivers Park I and II, which is reflected in “Equity in Earnings of Affiliates” in the accompanying condensed consolidated statement of operations for the three months ended March 31, 2017.

Funds From Operations (“FFO”) available to common shareholders and unitholders increased to $13.9 million for the three months ended March 31, 2017 from $12.8 million for the same period in 2016 due to a decrease in accrued dividends on preferred shares, as well as the $1.9 million write-off of original issuance costs associated with the redemption of 2.2 million 7.750% Series A Cumulative Redeemable Perpetual Preferred Shares (the “7.750% Series A Preferred Shares”) in the first quarter of 2016. FFO also increased for the three months ended March 31, 2017 compared with the same period in 2016 due to additional income resulting from rent commencement at the NOVA build-to-suit, which was placed in service in August 2016, a decrease in interest expense and an increase in same property net operating income (“Same Property NOI”).

Same Property NOI, FFO and FFO available to common shareholders and unitholders are non-GAAP financial measures. For a description of Same Property NOI, including why we believe our presentation of Same Property NOI is useful and a reconciliation of Same Property NOI to net income (loss), see “Same Property Net Operating Income.” For a description of FFO and FFO available to common shareholders and unitholders, including why we believe our presentation is useful and a reconciliation of FFO and FFO available to common shareholders and unitholders to net income (loss) attributable to common shareholders, see “Funds From Operations.”

Significant Activity

•As previously disclosed, sold One Fair Oaks for net proceeds of $13.3 million in January 2017 and sold Plaza 500 for net proceeds of $72.5 million in February 2017.

•In March 2017, sold Rivers Park I and II and Aviation Business Park, which were owned through unconsolidated joint ventures, for net proceeds based on our ownership interest in the joint ventures of $18.4 million.

•Occupied and leased percentages at March 31, 2017 remained relatively flat at 92.4% and 94.0%, respectively, compared with March 31, 2016.

29

Properties:

The following sets forth certain information about our properties by segment as of March 31, 2017 (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, 2017		Occupied at March 31, 2017
Office
11 Dupont Circle, NW	1	CBD	151,144	$	4,468	77.1	%	77.1	%
440 First Street, NW	1	Capitol Hill	138,648	4,394		91.9	%	85.6	%
500 First Street, NW	1	Capitol Hill	129,035	4,638		100.0	%	100.0	%
840 First Street, NE	1	NoMA	248,536	7,702		100.0	%	100.0	%
1211 Connecticut Avenue, NW	1	CBD	131,746	3,758		91.2	%	91.2	%
1401 K Street, NW	1	East End	118,534	3,592		86.9	%	77.2	%
Total/Weighted Average	6		917,643	28,552		92.0	%	89.8	%
Unconsolidated Joint Venture
1750 H Street, NW	1	CBD	113,131	4,319		100.0	%	94.6	%
Region Total/Weighted Average	7		1,030,774	$	32,871	92.9	%	90.4	%

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

⁽²⁾  Annualized cash basis rent at the end of the quarter, 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. This amount does not include items such as rent abatement, unreimbursed expenses, non-recurring revenues and expenses, differences in leased compared with occupied space, and timing differences related to tenant activity.

30

MARYLAND REGION

Property	Buildings	Location	Square Feet	Annualized Cash Basis Rent(1)		Leased at March 31, 2017		Occupied at March 31, 2017
Office
Annapolis Business Center	2	Annapolis	101,113	$	1,770	100.0	%	100.0	%
Cloverleaf Center	4	Germantown	173,916	2,649		89.8	%	89.8	%
Hillside I and II	2	Columbia	87,267	991		87.6	%	87.6	%
Metro Park North	4	Rockville	191,211	2,963		87.3	%	87.3	%
Redland II and III(2)	2	Rockville	349,267	9,872		100.0	%	100.0	%
TenThreeTwenty	1	Columbia	138,944	2,143		93.4	%	93.4	%
Total Office	15		1,041,718	20,388		94.0	%	94.0	%
Business Park
Ammendale Business Park(3)	7	Beltsville	312,846	3,997		90.7	%	80.5	%
Gateway 270 West	6	Clarksburg	252,295	3,243		92.9	%	92.9	%
Snowden Center	5	Columbia	145,423	2,230		96.0	%	96.0	%
Total Business Park	18		710,564	9,470		92.6	%	88.1	%
Total/Weighted Average	33		1,752,282	29,858		93.4	%	91.6	%
Redevelopment
Redland I (2)	1	Rockville	133,895	—
Region Total/Weighted Average	34		1,886,177	$	29,858	93.4	%	91.6	%

⁽¹⁾  Annualized cash basis rent at the end of the quarter, 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. This amount does not include items such as rent abatement, unreimbursed expenses, non-recurring revenues and expenses, differences in leased compared with occupied space, and timing differences related to tenant activity.

⁽²⁾  Redland II and III refer to 520 and 530 Gaither Road, respectively. We use the term Redland when collectively referring to Redland I (540 Gaither Road), II and III. Redland I was placed into redevelopment in March 2017.

⁽³⁾  Ammendale Business Park consists of the following properties: Ammendale Commerce Center and Indian Creek Court.

31

NORTHERN VIRGINIA REGION

Property	Buildings	Location	Square Feet	Annualized Cash Basis Rent(1)		Leased at March 31, 2017		Occupied at March 31, 2017
Office
Atlantic Corporate Park	2	Sterling	218,326	$	3,983	96.2	%	94.8	%
NOVA build-to-suit	1	Not Disclosed	167,440	4,050		100.0	%	100.0	%
Three Flint Hill	1	Oakton	180,699	3,721		96.2	%	96.2	%
1775 Wiehle Avenue	1	Reston	129,982	2,984		95.5	%	95.5	%
Total Office	5		696,447	14,738		97.0	%	96.5	%
Business Park
Sterling Park Business Center(2)	7	Sterling	472,543	4,393		92.1	%	86.9	%
Total Consolidated	12		1,168,990	19,131		95.0	%	92.6	%
Unconsolidated Joint Venture
Prosperity Metro Plaza	2	Merrifield	326,197	8,884		100.0	%	100.0	%
Region Total/Weighted Average	14		1,495,187	$	28,015	96.1	%	94.2	%

⁽¹⁾  Annualized cash basis rent at the end of the quarter, 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. This amount does not include items such as rent abatement, unreimbursed expenses, non-recurring revenues and expenses, differences in leased compared with occupied space, and timing differences related to tenant activity.

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

32

SOUTHERN VIRGINIA REGION

Property	Buildings	Location	Square Feet	Annualized Cash Basis Rent(1)		Leased at March 31, 2017		Occupied at March 31, 2017
Office
Greenbrier Towers	2	Chesapeake	171,766	$	1,866	87.1	%	85.2	%
Business Park
Battlefield Corporate Center	1	Chesapeake	96,720	861		100.0	%	100.0	%
Crossways Commerce Center(2)	9	Chesapeake	1,082,461	11,904		95.7	%	94.5	%
Greenbrier Business Park(3)	4	Chesapeake	411,237	4,670		94.0	%	94.0	%
Norfolk Commerce Park(4)	3	Norfolk	261,674	2,718		96.1	%	96.1	%
Total Business Park	17		1,852,092	20,153		95.6	%	94.9	%
Region Total/Weighted Average	19		2,023,858	$	22,019	94.9	%	94.1	%

⁽¹⁾  Annualized cash basis rent at the end of the quarter, 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. This amount does not include items such as rent abatement, unreimbursed expenses, non-recurring revenues and expenses, differences in leased compared with occupied space, and timing differences related to tenant activity.

⁽²⁾  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.

⁽³⁾  Greenbrier Business Park consists of the following properties: Greenbrier Technology Center I, Greenbrier Technology Center II and Greenbrier Circle Corporate Center.

⁽⁴⁾  Norfolk Commerce Park consists of the following properties: Norfolk Business Center, Norfolk Commerce Park II and Gateway II.

33

Development and Redevelopment Activity

We will place completed development and redevelopment assets in-service upon the earlier of one year after major construction activity is deemed to be substantially complete or upon occupancy. We construct office buildings and/or business parks on a build-to-suit basis or with the intent to lease upon completion of construction. At March 31, 2017, we owned developable land that can accommodate 0.4 million square feet of additional building space, of which 34 thousand is located in the Washington, D.C. reporting segment, 0.1 million in the Maryland reporting segment, 0.2 million in the Northern Virginia reporting segment and 0.1 million in the Southern Virginia reporting segment.

In March 2017, the sole tenant of 540 Gaither Road at Redland (“Redland I”) exercised its early termination option and vacated the 133,895 square-foot building, which is located in our Maryland reporting segment. Upon the tenant vacating Redland I, the building was placed into redevelopment. At March 31, 2017, our total investment in the building under redevelopment was $23.6 million, which included the $23.0 million total original cost basis of the building and land. The majority of costs incurred as of March 31, 2017 in excess of the original cost basis of the building and land related to site planning and design costs. We currently anticipate spending $4.6 million on the building redevelopment, which excludes anticipated tenant improvements of $5.4 million and leasing commissions of $1.9 million. We currently expect to complete the building redevelopment in the third quarter of 2017; however, we can provide no assurances regarding the timing, cost or results of the project.

During the first quarter of 2017, we did not place in-service any completed development or redevelopment space. At March 31, 2017, we did not have any completed development or redevelopment space that had yet to be placed in-service.

Lease Expirations

At March 31, 2017, 10.8% of our annualized cash basis rent was scheduled to expire during the next twelve months, and 9.3% of our annualized cash basis rent was scheduled to expire during the remainder of 2017, which includes 4.7% of our annualized cash basis rent that is related to the Bureau of Prisons (whose lease is scheduled to expire in July 2017). The Bureau of Prisons fully leases 500 First Street, NW in our Washington, D.C. reporting segment and was subject to a lease that was scheduled to expire in July 2016. During the second quarter of 2016, we entered into a one-year lease extension with the Bureau of Prisons, which is set to expire in July 2017, and we believe there is a likelihood that the tenant will elect to further extend the expiration date of the lease due to potential short-term delays in relocating to its new space; however, we can provide no assurances regarding the length of such extension or that such extension will occur at all. Currently, we are evaluating various strategies with respect to 500 First Street, NW, which include repositioning 500 First Street, NW and gauging new tenant interest to lease this property, all with the ultimate goal of maximizing value upon the expiration of the lease; however, we can provide no assurances regarding the outcome of these or any other alternative strategies for the property. We expect replacement rents on leases expiring during the remainder of 2017 to increase slightly on a cash basis relative to the current rental rates being paid by tenants.

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. Prior to signing a lease with a tenant, we generally assess the prospective tenant’s credit quality through review of its financial statements and tax returns, and the result of that review is a factor in establishing the rent to be charged and/or level of security deposit required. Over the course of our leases, we monitor our tenants to stay aware of any material changes in credit quality. The metrics we use to evaluate a significant tenant’s liquidity and creditworthiness depend on facts and circumstances specific to that tenant and to the industry in which it operates and include the tenant’s credit history and economic conditions related to the tenant, its operations and the markets in which it operates. These factors may change over time. In addition, our property management personnel have regular contact with tenants and tenant employees and, where the terms of the lease permit and we deem it prudent, we may request tenant financial information for periodic review, review publicly-available financial statements in the case of public company tenants and monitor news and rating agency reports regarding our tenants (or their parent companies) and their underlying businesses. In addition, we regularly analyze account receivable balances as part of the ongoing monitoring of the timeliness of rent collections from tenants.

During the first quarter of 2017, we had a tenant retention rate of 32% and we experienced negative net absorption of 116,000 square feet. The low retention rate and negative net absorption were due to the lease termination of the Department of Health and Human Services at Redland I, who was the sole tenant of the 133,895 square-foot building. We have begun repositioning Redland

34

I, as the building was placed into redevelopment in March 2017. In addition, during the second quarter of 2016, we re-leased two floors at Redland I, which totaled 45,000 square feet, or approximately 34.0% of the building’s total square footage. We anticipate that the new tenant at Redland I will take occupancy in early 2018; however, we can provide no assurances regarding the timing of when the tenant will take occupancy. After reflecting all of the renewal leases on a triple-net basis to allow for comparability, the weighted average rental rate of our renewed leases for the three months ended March 31, 2017 increased 4.6% on a U.S. generally accepted accounting principles (“GAAP”) basis, compared with the expiring leases. During the first quarter of 2017, we executed new leases for 74,000 square feet, with the majority of the new leases (based on square footage) containing rent escalations. After reflecting all leases on a triple-net basis to allow for comparability, the weighted average rental rate of our new leases increased 2.3% on a GAAP basis, compared with expiring leases.

The following table sets forth tenant improvement and leasing commission costs on a rentable square foot basis for all new and renewal leases signed during the three months ended March 31, 2017:

	New	Renewal
Tenant improvements (per rentable square foot)	$32.61	$5.37
Leasing commissions (per rentable square foot)	$13.69	$2.21

The following table sets forth a summary schedule of the lease expirations at our consolidated properties for leases in place as of March 31, 2017, assuming no tenant exercises renewal options or early termination rights (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)
2017(4)	35	385,619	7.0	%	$	9,232	9.3	%	$	23.94
2018	62	647,263	11.7	%	9,209		9.2	%	14.23
2019	61	755,009	13.7	%	10,921		11.0	%	14.47
2020	56	930,021	16.9	%	15,162		15.2	%	16.30
2021	48	496,315	9.0	%	7,338		7.4	%	14.79
2022	49	583,478	10.6	%	9,099		9.1	%	15.59
2023	18	487,062	8.8	%	11,429		11.5	%	23.47
2024	22	418,829	7.6	%	8,446		8.5	%	20.16
2025	14	243,297	4.4	%	4,491		4.5	%	18.46
2026	12	142,806	2.6	%	3,180		3.2	%	22.27
Thereafter	26	422,913	7.7	%	11,054		11.1	%	26.14
Total / Weighted Average	403	5,512,612	100.0	%	$	99,561	100.0	%	$	18.06

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

⁽²⁾  Annualized cash basis rent at the end of the quarter, 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 estimated operating expense reimbursements that are included, along with base rent, in the contractual payments of our full-service leases. This amount does not include items such as rent abatement, unreimbursed expenses, nonrecurring revenues and expenses, differences in leased and occupied space and timing differences related to tenant activity.

⁽³⁾  Represents annualized cash basis rent at March 31, 2017, divided by the square footage of the expiring leases.

⁽⁴⁾  Includes the contractual expiration of the Bureau of Prisons at 500 First Street, NW on July 31, 2017.

35

Critical Accounting Policies

Our consolidated financial statements are prepared in accordance with 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. All of our significant accounting policies, including certain critical accounting policies, are disclosed in our Annual Report on Form 10-K for the year ended December 31, 2016.

Results of Operations

Comparison of the Three Months Ended March 31, 2017with the Three Months Ended March 31, 2016

The term “Comparable Portfolio” refers to all consolidated properties owned by us and in-service, with operating results reflected in our continuing operations, for the entirety of the periods presented.

The term “Non-Comparable Properties” refers to properties that we have acquired, sold, placed in-service, or placed in development or redevelopment during the periods presented. The Non-Comparable Properties are comprised of the following properties:

• Plaza 500, which was sold in February 2017; One Fair Oaks, which was sold in January 2017; Storey Park, a development site that was located in our Washington, D.C. reporting segment and was owned by a 97% consolidated joint venture, which was sold in July 2016; and the NOVA Non-Core Portfolio, which was comprised of eight properties and was sold in March 2016. For the Results of Operations discussion below with respect to the comparison of the three months ended March 31, 2017 and 2016, these eleven properties are collectively referred to as the “Disposed Properties”.

• Redland I, which was placed into redevelopment on March 23, 2017.

• The NOVA build-to-suit, which was fully placed in-service during the third quarter of 2016.

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.

Assuming no additional property acquisitions or dispositions during the remainder of 2017, we expect rental revenues, tenant reimbursement and other revenues, property operating expense, real estate taxes and insurance expense and depreciation expense to all decrease in 2017 compared with 2016 due to the sale of the Disposed Properties. If additional dispositions or acquisitions occur, such expected increases or decreases could materially change.

Total Revenues

Total revenues are summarized as follows:

	Three Months Ended   March 31,							Percent
(dollars in thousands)	2017		2016		Change			Change
Rental	$	30,818	$	33,844	$	(3,026	)	(9	)%
Tenant reimbursements and other	$	7,005	$	8,853	$	(1,848	)	(21	)%

36

Rental Revenue

Rental revenue is comprised of contractual rent, the impact of straight-line revenue, the amortization of deferred lease incentive costs and deferred tenant improvement reimbursement revenue, and the amortization of deferred market rent assets and liabilities representing above and below market rate leases at acquisition. Rental revenue decreased $3.0 million for the three months ended March 31, 2017 compared with the same period in 2016. For the Comparable Portfolio, rental revenue increased $0.7 million for the three months ended March 31, 2017 compared with the same period in 2016 due to higher rental rates on new and renewal leases, while total occupancy remained relatively flat for the Comparable Portfolio. The weighted average occupancy of the Comparable Portfolio was 92.1% and 92.3% for the three months ended March 31, 2017 and 2016, respectively. Rental revenue for the Non-Comparable Properties decreased $3.7 million for the three months ended March 31, 2017 compared with the same period in 2016 due to the following:

•a $4.7 million decrease from the Disposed Properties; and

•a $1.0 million increase from the NOVA build-to-suit.

Rental revenue increased (decreased) for each reporting segment during the periods presented, due to the factors discussed above, as follows:

	Reporting Segment
(dollars in thousands)	Washington, D.C.		Maryland		Northern Virginia			Southern Virginia		Total
Increase (decrease) in rental revenue:
Three months ended March 31, 2017 compared with the same period in 2016	$	450	$	61	$	(3,616	)	$	79	$	(3,026	)

The significant decrease within the Northern Virginia reporting segment primarily relates to the Disposed Properties.

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 decreased $1.8 million for the three months ended March 31, 2017 compared with the same period in 2016. For the Comparable Portfolio, tenant reimbursements and other revenues decreased $0.5 million for the three months ended March 31, 2017 compared with the same period in 2016 due to a reduction of snow and ice removal reimbursements associated with a decrease in the related expense. Tenant reimbursements and other revenues for the Non-Comparable Properties decreased $1.3 million for the three months ended March 31, 2017 compared with the same period in 2016 due to the following:

• a $1.6 million decrease from the Disposed Properties; and

• a $0.3 million increase from the NOVA build-to-suit.

Tenant reimbursements and other revenues decreased for each reporting segment during the periods presented, due to the factors discussed above, as follows:

	Reporting Segment
(dollars in thousands)	Washington, D.C.			Maryland			Northern Virginia			Southern Virginia			Total
Decrease in tenant reimbursements and other revenues:
Three months ended March 31, 2017 compared with the same period in 2016	$	(18	)	$	(413	)	$	(1,379	)	$	(38	)	$	(1,848	)

37

Total Property Expenses

Total property expenses are summarized as follows:

	Three Months Ended   March 31,							Percent
(dollars in thousands)	2017		2016		Change			Change
Property operating	$	9,958	$	11,537	$	(1,579	)	(14	)%
Real estate taxes and insurance	$	4,661	$	5,216	$	(555	)	(11	)%

Property Operating Expenses

Property operating expenses decreased $1.6 million for the three months ended March 31, 2017 compared with the same period in 2016. For the Comparable Portfolio, property operating expenses decreased $0.1 million for the three months ended March 31, 2017 compared with the same period in 2016, primarily due to a decrease in snow and ice removal costs. Property operating expenses for the Non-Comparable Properties decreased $1.5 million for the three months ended March 31, 2017 compared with the same period in 2016 due to the following:

• a $1.7 million decrease from the Disposed Properties;

• a $0.1 million decrease from Redland I; and

• a $0.3 million increase from the NOVA build-to-suit.

Property operating expenses increased (decreased) for each reporting segment during the periods presented, due to the factors discussed above, as follows:

	Reporting Segment
(dollars in thousands)	Washington, D.C.		Maryland			Northern Virginia			Southern Virginia		Total
Increase (decrease) in property operating expenses:
Three months ended March 31, 2017 compared with the same period in 2016	$	171	$	(578	)	$	(1,364	)	$	192	$	(1,579	)

Real Estate Taxes and Insurance Expense

Real estate taxes and insurance expense decreased $0.6 million for the three months ended March 31, 2017 compared with the same period in 2016. For the Comparable Portfolio, real estate taxes and insurance expense increased $0.2 million for the three months ended March 31, 2017 compared with the same period in 2016 due to higher real estate tax assessments primarily for properties in Washington, D.C. Real estate taxes and insurance expense for the Non-Comparable Properties decreased $0.8 million for the three months ended March 31, 2017 compared with the same period in 2016 due to the Disposed Properties.

Real estate taxes and insurance expense (decreased) increased for each reporting segment during the periods presented, due to the factors discussed above, as follows:

	Reporting Segment
(dollars in thousands)	Washington, D.C.			Maryland		Northern Virginia			Southern Virginia		Total
(Decrease) increase in real estate taxes and insurance expense:
Three months ended March 31, 2017 compared with the same period in 2016	$	(80	)	$	53	$	(556	)	$	28	$	(555	)

38

Other Operating Expenses

General and administrative expenses are summarized as follows:

	Three Months Ended   March 31,							Percent
(dollars in thousands)	2017		2016		Change			Change
General and administrative	$	4,497	$	4,578	$	(81	)	(2	)%

General and administrative expenses decreased $0.1 million for the three months ended March 31, 2017 compared with the same period in 2016 primarily due to a decrease in salary expenses, marketing costs and other overhead reductions. We currently anticipate that general and administrative expenses for the remainder of 2017 will increase compared with 2016 due to an increase in share-based compensation costs.

Depreciation and amortization expense is summarized as follows:

	Three Months Ended   March 31,							Percent
(dollars in thousands)	2017		2016		Change			Change
Depreciation and amortization	$	14,566	$	15,006	$	(440	)	(3	)%

Depreciation and amortization expense includes depreciation of rental property and the amortization of intangible assets and leasing commissions. Depreciation and amortization expense decreased $0.4 million for the three months ended March 31, 2017 compared with the same period in 2016. For the Comparable Portfolio, depreciation and amortization decreased $0.1 million for the three months ended March 31, 2017 compared with the same period in 2016 due to the full amortization of certain lease-level assets. Depreciation and amortization expense for the Non-Comparable Properties decreased $0.3 million for the three months ended March 31, 2017 compared with the same period in 2016 due to the following:

• a $1.0 million decrease from the Disposed Properties; and

•a $0.7 million increase from the NOVA build-to-suit.

Other Expenses (Income)

Interest expense is summarized as follows:

	Three Months Ended   March 31,							Percent
(dollars in thousands)	2017		2016		Change			Change
Interest expense	$	6,344	$	6,816	$	(472	)	(7	)%

Interest expense decreased $0.5 million for the three months ended March 31, 2017 compared with the same period in 2016 due to a lower average outstanding debt balance and the maturity of two swaps that together fixed LIBOR at a weighted average interest rate of 1.8% on $60.0 million of our variable-rate debt in July 2016. For the three months ended March 31, 2017, our aggregate weighted average borrowings under the unsecured revolving credit facility and the unsecured term loan totaled $396.6 million, with a weighted average interest rate of 2.34% compared with aggregate weighted average borrowings of $469.5 million with a weighted average interest rate of 1.96% for the same period in 2016.

We anticipate interest expense will slightly decrease for the remainder of 2017 compared with 2016 due to repayments of outstanding debt and the July 2017 maturity of $147.5 million of interest rate swaps that together fix LIBOR at a weighted average interest rate of 1.5%, which are anticipated to be partially offset by a higher LIBOR. All references to LIBOR in the condensed consolidated financial statements refer to one-month LIBOR.

39

Interest and other income are summarized as follows:

	Three Months Ended   March 31,							Percent
(dollars in thousands)	2017		2016		Change			Change
Interest and other income	$	210	$	1,003	$	(793	)	(79	)%

Interest and other income decreased $0.8 million for the three months ended March 31, 2017 compared with the same period in 2016. On June 2, 2016, the owners of 950 F Street, NW, a ten-story, 287,000 square-foot office/retail building located in Washington, D.C., prepaid a mezzanine loan that had an outstanding balance of $34.0 million and paid an exit fee upon the loan’s prepayment. The loan required monthly interest-only payments and had a fixed interest rate of 9.75%.

We anticipate that interest and other income will decrease for the remainder of 2017 compared with 2016 as a result of the reduction in interest income from the prepayment of the $34.0 million 950 F Street, NW mezzanine loan in June 2016.

Equity in earnings of affiliates is summarized as follows:

	Three Months Ended   March 31,						Percent
(dollars in thousands)	2017		2016		Change		Change
Equity in earnings of affiliates	$	4,223	$	555	$	3,668	661	%

Equity in earnings of affiliates reflects our aggregate ownership interest in the operating results of the properties in which we do not have a controlling interest.

On March 7, 2017, three of our unconsolidated joint ventures collectively sold Aviation Business Park and Rivers Park I and II, which are all located in Maryland. Based on our percentage ownership of the joint ventures, our share of gross proceeds from the sale totaled $19.0 million, which generated $18.4 million of net proceeds. We used the net proceeds from the sale to repay $7.0 million (our proportionate share) of mortgage debt encumbering Rivers Park I and II, and the remainder was used to repay a portion of the outstanding balance under our unsecured revolving credit facility.

Equity in earnings of affiliates increased $3.7 million for the three months ended March 31, 2017 compared with the same period in 2016 primarily due to recognizing a $3.8 million (our proportionate share) gain on the sale of Aviation and Rivers Park I and II. We have had, and will have, no continuing involvement in the ownership decisions of any of the unconsolidated joint ventures’ disposed properties subsequent to their disposal. For more information about our unconsolidated joint ventures’ disposed properties, see note 5, Investment in Affiliates, in the notes to our condensed consolidated financial statements.

(Gain) loss on sale of rental property is summarized as follows:

	Three Months Ended   March 31,
(dollars in thousands)	2017			2016
(Gain) loss on sale of rental property	$	(42,799	)	$	1,155

On February 17, 2017, we sold Plaza 500, a 502,830 square-foot industrial property located in Northern Virginia, for gross proceeds of $75.0 million, which generated net proceeds of $72.5 million, and we recorded a $42.7 million gain on sale. We used a portion of the net proceeds from the sale to repay $70.0 million of the outstanding balance under our unsecured revolving credit facility.

On January 9, 2017, we sold One Fair Oaks, a 214,214 square-foot office building located in Northern Virginia, for gross proceeds of $13.7 million, which generated net proceeds of $13.3 million, and we recorded a $0.1 million gain on sale. We used

40

the net proceeds from the sale, together with available cash, to repay $14.0 million of the outstanding balance under our unsecured revolving credit facility.

On March 25, 2016, we sold the NOVA Non-Core Portfolio for net proceeds of $90.5 million, and we recorded a $1.2 million loss on the sale in the first quarter of 2016.

We have had, and will have, no continuing involvement with these properties subsequent to their disposal. For more information about our disposed properties, see note 6, Dispositions, in the notes to our condensed consolidated financial statements.

Loss on debt extinguishment is summarized as follows:

	Three Months Ended   March 31,
(dollars in thousands)	2017		2016
Loss on debt extinguishment	$	—	$	48

On March 1, 2016 we used available cash to defease the $0.2 million outstanding balance of the mortgage loan encumbering Gateway Centre Manassas, which was included in the NOVA Non-Core Portfolio and was sold on March 25, 2016. In connection with the defeasance, we incurred $48 thousand of extinguishment charges for the three months ended March 31, 2016.

Net (income) loss attributable to noncontrolling interests

Net (income) loss attributable to noncontrolling interests is summarized as follows:

	Three Months Ended   March 31,
(dollars in thousands)	2017			2016
Net (income) loss attributable to noncontrolling interests	$	(1,884	)	$	147

Net (income) loss attributable to noncontrolling interests reflects the ownership interests in our net income or loss, less amounts owed to our preferred shareholders, attributable to parties other than us. We had net income of $43.1 million for the three months ended March 31, 2017 and a net loss, less preferred dividends, of $4.2 million for the three months ended March 31, 2016. The weighted average percentage of the common Operating Partnership units held by third parties was 4.2% and 4.3% for the three months ended March 31, 2017 and 2016, respectively.

Prior to the sale of Storey Park on July 25, 2016, we consolidated the operating results of one joint venture, which owned Storey Park, and we recognized our joint venture partner’s percentage of gains or losses within net (income) loss attributable to noncontrolling interests. The joint venture partner’s aggregate share of earnings in the operating results of our consolidated joint venture was immaterial for the three months ended March 30, 2016.

41

Same Property Net Operating Income

Same Property NOI, defined as property revenues (rental and tenant reimbursements and other revenues) less property operating expenses (real estate taxes, property operating and insurance expenses) from the consolidated properties owned by us 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 (loss) calculated in accordance with GAAP. A reconciliation of our Same Property NOI to net income (loss) is presented below. The Same Property NOI results exclude the collection of termination fees, as these items vary significantly period-over-period, thus impacting trends and comparability. Also, Same Property NOI includes a normalized management fee percentage in lieu of an administrative overhead allocation for comparative purposes. We eliminate depreciation and amortization expense, which are property level expenses, in computing Same Property NOI as 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 determine whether growth or declines in net operating income are a result of increases or decreases in property operations or the acquisition or disposition of additional properties. While this presentation provides useful information to management and investors, the results should be read in conjunction with the results from the consolidated statements of operations to provide a complete depiction of our total performance.

42

Comparison of the Three Months Ended March 31, 2017 with the Three Months Ended March 31, 2016

Reconciliation of Same Property NOI for Our Reporting Segments

The following table provides a reconciliation of our Same Property NOI for our reporting segments to our consolidated net income (loss) for the three months ended March 31, 2017 and 2016 and provides a basis for our discussion of total Same Property NOI for the three months ended March 31, 2017 compared with the same period in 2016. A detailed discussion of each reporting segment’s Same Property NOI results for the three months ended March 31, 2017 and 2016 follows this table.

CONSOLIDATED

(dollars in thousands)	Three Months Ended   March 31, 2017									Three Months Ended   March 31, 2016								Same Property(1)
Revenues:	Same Property(1)			Non-Same Property(2)			All Properties			Same Property(1)		Non-Same Property(2)			All Properties			$ Change			% Change
Rental	$	28,471		$	2,347		$	30,818		$	27,779	$	6,065		$	33,844		$	692		2.5
Tenant reimbursements and other(3)	6,187			818			7,005			6,655		2,198			8,853			(468		)	(7.0	)
Total revenues	34,658			3,165			37,823			34,434		8,263			42,697			224			0.7
Operating expenses:
Property(4)	8,997			961			9,958			9,221		2,316			11,537			(224		)	(2.4	)
Real estate taxes and insurance	4,358			303			4,661			4,171		1,045			5,216			187			4.5
Total operating expenses	13,355			1,264			14,619			13,392		3,361			16,753			(37		)	(0.3	)
Net operating income	$	21,303		$	1,901		23,204			$	21,042	$	4,902		25,944			$	261		1.2
General and administrative expenses							(4,497		)						(4,578		)
Depreciation and amortization							(14,566		)						(15,006		)
Total other expenses (income)							40,888								(6,461		)
Net income (loss)							$	45,029							$	(101	)
	Three Months Ended   March 31, 2017									Three Months Ended   March 31, 2016								Same Property(1)
Net Operating Income by Segment:	Same Property(1)			Non-Same Property(2)			All Properties			Same Property(1)		Non-Same Property(2)			All Properties			$ Change			% Change
Washington, D.C.	$	6,347		$	(56	)	$	6,291		$	6,191	$	(241	)	$	5,950		$	156		2.5
Maryland	6,878			718			7,596			6,620		803			7,423			258			3.9
Northern Virginia	3,283			1,332			4,615			3,190		4,500			7,690			93			2.9
Southern Virginia	4,795			(93		)	4,702			5,041		(160		)	4,881			(246		)	(4.9	)
Total	$	21,303		$	1,901		$	23,204		$	21,042	$	4,902		$	25,944		$	261		1.2
	Weighted Average Occupancy for the Three Months Ended March 31,
	2017			2016
Same Properties	92.1		%	92.3		%

⁽¹⁾  Same property comparisons are based upon those consolidated properties owned and in-service for the entirety of the periods presented. Same property results for the three months ended March 31, 2017 and 2016 exclude the operating results of all disposed properties and the results of the following non-same properties that were owned as of March 31, 2017: Redland I and the NOVA build-to-suit.

⁽²⁾  Includes property operating results for Redland I, the NOVA build-to-suit and all properties that were disposed of prior to March 31, 2017. Also includes an administrative overhead allocation, which was replaced by a normalized management fee for comparative purposes, and termination fee income.

⁽³⁾  Excludes termination fee income for comparative purposes.

⁽⁴⁾  Same property operating expenses have been adjusted to reflect a normalized management fee in lieu of an administrative overhead allocation for comparative purposes.

Same Property NOI increased $0.3 million for the three months ended March 31, 2017 compared with the same period in 2016. Total same property revenues increased $0.2 million for the three months ended March 31, 2017 compared with the same period in 2016 primarily due to an increase in rental rates on new and renewal leases, partially offset by a decrease in snow and ice removal cost recoveries. Total same property operating expenses decreased slightly for the three months ended March 31, 2017 compared with the same period in 2016 due to a decrease in snow and ice removal costs and an increase in anticipated bad debt reserves, which were partially offset by an increase in real estate taxes due to higher real estate tax assessments at certain properties.

43

Washington, D.C.
	Three Months Ended   March 31,
(dollars in thousands)	2017			2016			$ Change			% Change
Number of buildings(1)	6			6			—			—
Same property revenues
Rental	$	9,149		$	8,699		$	450		5.2
Tenant reimbursements and other(2)	2,532			2,551			(19		)	(0.7	)
Total same property revenues	11,681			11,250			431			3.8
Same property operating expenses
Property(3)	3,043			2,913			130			4.5
Real estate taxes and insurance	2,291			2,146			145			6.8
Total same property operating expenses	5,334			5,059			275			5.4
Same Property NOI	$	6,347		$	6,191		$	156		2.5
	Weighted Average Occupancy for the Three Months Ended March 31,
	2017			2016
Same Properties	90.3		%	88.1		%

⁽¹⁾  Same property comparisons are based upon those consolidated properties owned and in-service for the entirety of the periods presented.

⁽²⁾  Excludes termination fee income for comparative purposes.

⁽³⁾  Same property operating expenses have been adjusted to reflect a normalized management fee 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, 2017 compared with the same period in 2016. For the three months ended March 31, 2017, total same property revenues increased $0.4 million compared with the same period in 2016 due to an increase in occupancy at certain Washington, D.C. properties. Total same property operating expenses increased by $0.3 million for the three months ended March 31, 2017 compared with the same period in 2016 due to an increase in anticipated bad debt reserves and an increase in real estate tax expenses due to higher real estate tax assessments.

44

Maryland
	Three Months Ended   March 31,
(dollars in thousands)	2017			2016			$ Change			% Change
Number of buildings(1)	33			33			—			—
Same property revenues
Rental	$	8,599		$	8,453		$	146		1.7
Tenant reimbursements and other(2)	1,607			1,955			(348		)	(17.8	)
Total same property revenues	10,206			10,408			(202		)	(1.9	)
Same property operating expenses
Property(3)	2,433			2,958			(525		)	(17.7	)
Real estate taxes and insurance	895			830			65			7.8
Total same property operating expenses	3,328			3,788			(460		)	(12.1	)
Same Property NOI	$	6,878		$	6,620		$	258		3.9
	Weighted Average Occupancy for the Three Months Ended March 31,
	2017			2016
Same Properties	91.3		%	91.6		%

⁽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 results of the following non-same property that was owned as of March 31, 2017: Redland I.

⁽²⁾  Excludes termination fee income for comparative purposes.

⁽³⁾  Same property operating expenses have been adjusted to reflect a normalized management fee in lieu of an administrative overhead allocation for comparative purposes.

Same Property NOI for the Maryland properties increased $0.3 million for the three months ended March 31, 2017 compared with the same period in 2016. Total same property revenues decreased $0.2 million for the three months ended March 31, 2017 compared with the same period in 2016 due to a decrease in snow and ice removal cost recoveries, partially offset by an increase in rental revenue due to higher rental rates on new and renewal leases. Total same property operating expenses decreased $0.5 million for the three months ended March 31, 2017 compared with the same period in 2016 due to a decrease in snow and ice removal costs.

45

Northern Virginia
	Three Months Ended   March 31,
(dollars in thousands)	2017			2016			$ Change			% Change
Number of buildings(1)	11			11			—			—
Same property revenues
Rental	$	4,336		$	4,319		$	17		0.4
Tenant reimbursements and other(2)	881			945			(64		)	(6.8	)
Total same property revenues	5,217			5,264			(47		)	(0.9	)
Same property operating expenses
Property(3)	1,406			1,494			(88		)	(5.9	)
Real estate taxes and insurance	528			580			(52		)	(9.0	)
Total same property operating expenses	1,934			2,074			(140		)	(6.8	)
Same Property NOI	$	3,283		$	3,190		$	93		2.9
	Weighted Average Occupancy for the Three Months Ended March 31,
	2017			2016
Same Properties	91.3		%	93.0		%

⁽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 results of the following non-same property that was owned as of March 31, 2017: the NOVA build-to-suit.

⁽²⁾  Excludes termination fee income for comparative purposes.

⁽³⁾  Same property operating expenses have been adjusted to reflect a normalized management fee in lieu of an administrative overhead allocation for comparative purposes.

Same Property NOI for the Northern Virginia properties increased $0.1 million for the three months ended March 31, 2017 compared with the same period in 2016. Total same property revenues slightly decreased for the three months ended March 31, 2017 compared with the same period in 2016 due to a decrease in snow and ice removal cost recoveries. Total same property operating expenses decreased $0.1 million for the three months ended March 31, 2017 compared with the same period in 2016 primarily due to a decrease in snow and ice removal costs and a decrease in real estate tax expense due to lower tax assessments.

46

Southern Virginia
	Three Months Ended   March 31,
(dollars in thousands)	2017			2016			$ Change			% Change
Number of buildings(1)	19			19			—			—
Same property revenues
Rental	$	6,387		$	6,308		$	79		1.3
Tenant reimbursements and other(2)	1,167			1,204			(37		)	(3.1	)
Total same property revenues	7,554			7,512			42			0.6
Same property operating expenses
Property(3)	2,115			1,856			259			14.0
Real estate taxes and insurance	644			615			29			4.7
Total same property operating expenses	2,759			2,471			288			11.7
Same Property NOI	$	4,795		$	5,041		$	(246	)	(4.9	)
	Weighted Average Occupancy for the Three Months Ended March 31,
	2017			2016
Same Properties	94.1		%	94.4		%

⁽¹⁾  Same property comparisons are based upon those consolidated properties owned and in-service for the entirety of the periods presented.

⁽²⁾  Excludes termination fee income for comparative purposes.

⁽³⁾  Same property operating expenses have been adjusted to reflect a normalized management fee in lieu of an administrative overhead allocation for comparative purposes.

Same Property NOI for the Southern Virginia properties decreased $0.2 million for the three months ended March 31, 2017 compared with the same period in 2016. Total same property revenues slightly increased for the three months ended March 31, 2017 compared with the same period in 2016 due to an increase in rental rates on new and renewal leases. Total same property operating expenses increased $0.3 million for the three months ended March 31, 2017 compared with the same period in 2016 primarily due to an increase in snow and ice removal costs.

47

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 (including both internal growth through development and redevelopment, as well as external growth through acquisitions).

On January 9, 2017, we sold One Fair Oaks, a vacant 214,214 square-foot office building located in Northern Virginia, and used the $13.3 million net proceeds from the sale, together with available cash, to repay $14.0 million of the outstanding balance under the unsecured revolving credit facility. In February 2017, we sold Plaza 500, a 502,830 square-foot industrial property located in Northern Virginia, and used a portion of the net proceeds to repay $70.0 million of the outstanding balance under the unsecured revolving credit facility. In March 2017, we used our proportionate share of the net proceeds from the sale of Aviation Business Park and Rivers Park I and II to repay $7.0 million (our proportionate share) of the mortgage loan that encumbered Rivers Park I and II, and the remainder was used, together with available cash, to repay $13.0 million of the outstanding balance under our unsecured revolving credit facility.

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 common shareholders.

As of the date of this filing, we had $51.0 million outstanding and $172.0 million available under the unsecured revolving credit facility.In the next 12 months, we have a $32.2 million construction loan and a $62.9 million fixed-rate loan maturing and we are currently contemplating whether to refinance or to repay the loans at the time of their maturity. For a list of principal debt balances and their maturity dates, as well as a reconciliation of our borrowings to the net debt balances presented in our consolidated balance sheets, see note 7, Debt, in the notes to our condensed consolidated financial statements.

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 our 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, 10.8% of our annualized cash basis rent is scheduled to expire during the next twelve months (which includes 4.7% of our annualized cash basis rent that is related to the Bureau of Prisons at 500 First Street, NW) and, if we are unable to renew these leases or re-lease the space, our cash flow could be negatively impacted.

The Bureau of Prisons, which fully leases 500 First Street, NW in Washington, D.C., was subject to a lease that was scheduled to expire in July 2016. During the second quarter of 2016, we entered into a one-year lease extension with the Bureau of Prisons, which is set to expire in July 2017, and we believe there is a likelihood that the tenant will elect to further extend the expiration date of the lease due to potential short-term delays in relocating to its new space; however, we can provide no assurances regarding the length of such extension or that such extension will occur at all. Currently, we are evaluating various strategies with respect to 500 First Street, NW, which includes repositioning 500 First Street, NW and gauging new tenant interest to lease this property, all with the ultimate goal of maximizing value upon the expiration of the lease; however, we can provide no assurances regarding the outcome of these or any other alternative strategies for the property.

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/or the issuance of equity and/or debt securities. In the process of exploring different financing options, we actively monitor the impact

48

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 to 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, 2017, we were in compliance with the covenants of our amended, restated and consolidated unsecured revolving credit facility and unsecured term loan, the 440 First Street, NW Construction Loan and the Northern Virginia 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 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 at March 31, 2017 (dollars in thousands):

Unsecured Revolving Credit Facility, Unsecured Term Loan and Construction Loans

Covenants	Quarter Ended March 31, 2017	Covenant
Consolidated Total Leverage Ratio(1)	47.4%	≤ 60%
Tangible Net Worth(1)	$772,118	≥ $601,202
Fixed Charge Coverage Ratio(1)	3.02x	≥ 1.50x
Maximum Dividend Payout Ratio	40.9%	≤ 95%
Restricted Indebtedness:
Maximum Secured Debt	23.2%	≤ 40%
Unencumbered Pool Leverage(1)	41.9%	≤ 60%
Unencumbered Pool Interest Coverage Ratio(1)	5.28x	≥ 1.75x

⁽¹⁾  These are the only covenants that apply to our 440 First Street, NW Construction Loan and Northern Virginia Construction Loan, which are calculated in accordance with the amended, restated and consolidated 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 dispositions 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

49

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)	2017			2016			Change
Net cash provided by operating activities	$	9,074		$	13,950		$	(4,876	)
Net cash provided by investing activities	90,244			68,104			22,140
Net cash used in financing activities	(100,193		)	(80,432		)	(19,761		)

Net cash provided by operating activities decreased $4.9 million for the three months ended March 31, 2017 compared with the same period in 2016 primarily due to a decrease in net operating income due to property dispositions during 2016 and the first quarter of 2017. In addition, there was an increase in deferred costs for the three months ended March 31, 2017 compared with the same period in 2016.

Net cash provided by investing activities increased $22.1 million for the three months ended March 31, 2017 compared with the same period in 2016. During the three months ended March 31, 2017, we received aggregate net proceeds of $85.8 million from the sales of Plaza 500 and One Fair Oaks. In addition, we received $11.3 million of distributions from three of our unconsolidated joint ventures, which primarily represented our proportionate share of the net proceeds from the combined sale of Aviation Business Park and Rivers Park I and II. During the three months ended March 31, 2016, we received aggregate net proceeds of $90.5 million from the sale of the NOVA Non-Core Portfolio. The increase in cash provided by investing activities for the three months ended March 31, 2017 compared with the same period in 2016 was also related to a $15.8 million combined decrease in cash used for construction activities and additions to rental property and furniture, fixtures and equipment, which was primarily driven by a decrease in costs incurred for the NOVA build-to-suit, which was placed in-service in August 2016.

Net cash used in financing activities increased $19.8 million for the three months ended March 31, 2017 compared with the same period in 2016. We issued $4.0 million of debt and repaid $97.9 million of outstanding debt during the three months ended March 31, 2017 compared with the issuance of $80.2 million of debt and the repayment of $93.1 million of outstanding debt during the three months ended March 31, 2016. In addition, during the three months ended March 31, 2016, we used cash from dispositions to redeem 2.2 million 7.750% Series A Preferred Shares with a total face value of $55.0 million, and we paid preferred dividends of $2.8 million on the remainder of our outstanding 7.750% Series A Preferred Shares, which were fully redeemed during the second and third quarters of 2016. Dividends to common shareholders decreased $2.9 million for the three months ended March 31, 2017 compared with the same period in 2016 due to a reduction of our quarterly dividend rate from $0.15 per common share to $0.10 per common share, which was effective for dividends paid on and after May 16, 2016.

Contractual Obligations

As of March 31, 2017, we had contractual construction in progress obligations, which included amounts accrued at March 31, 2017, of $6.1 million. The amount of contractual construction in progress obligations are primarily related to the redevelopment of Redland I at 540 Gaither Road and the development of a café pavilion amenity at Redland, which are located in our Maryland reporting segment. As of March 31, 2017, we had contractual rental property and furniture, fixtures and equipment obligations of $7.1 million outstanding, which included amounts accrued at March 31, 2017. The amount of contractual rental property and furniture, fixtures and equipment obligations at March 31, 2017 included costs for various properties across our reporting segments, including significant capital improvements at 1401 K Street, 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.

50

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, 2017, we remained liable to those local municipalities for $2.2 million in the event that we do not complete the specified work. We intend to complete the site improvements in satisfaction of these obligations.

We had no other material contractual obligations as of March 31, 2017.

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 the Operating Partnership. For each of our common and, when applicable, 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, 2017, owned 95.8% of the common interest in the Operating Partnership. The remaining common interests in the Operating Partnership are limited partnership interests that are owned by unrelated parties. In 2016, we redeemed all of our outstanding 7.750% Series A Preferred Shares and now only have common shares and Operating Partnership common units outstanding. 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 of 1986, as amended; 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 for additional information regarding the financial covenants, as well as “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 for the year ended December 31, 2016.

Dividends

On January 24, 2017, we declared a dividend of $0.10 per common share, equating to an annualized dividend of $0.40 per common share. The dividend was paid on February 15, 2017 to common shareholders of record as of February 8, 2017.

On April 25, 2017, we declared a dividend of $0.10 per common share, equating to an annualized dividend of $0.40 per common share. The dividend will be paid on May 15, 2017 to common shareholders of record as of May 8, 2017.

Funds From Operations

FFO, which is a non-GAAP measure used by many investors and analysts that follow the public real estate industry, represents net income (computed in accordance with GAAP), excluding (gains) losses on sales of rental property and impairments of rental property, plus real estate-related depreciation and amortization and after adjustments for unconsolidated partnerships and joint ventures. We also exclude from our FFO calculation, the impact related to third parties from our consolidated joint venture. FFO available to common shareholders and unitholders is calculated as FFO less accumulated dividends on our preferred shares for the applicable periods presented. We compute FFO in accordance with standards established by the National Association of Real Estate Investment Trusts (“NAREIT”), which may differ from the methodology for calculating FFO, or similarly titled measures, utilized by other equity REITs and, accordingly, may not be comparable to such other REITs.

We consider FFO and FFO available to common shareholders and unitholders useful measures of performance for an equity REIT as they facilitate an understanding of the operating performance of our properties without giving effect to real estate depreciation and amortization, which assume that the value of rental property 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 investors and analysts. However, FFO does not represent amounts available for our 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,

51

including our ability to make distributions. 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.

Our presentation of FFO in accordance with NAREIT’s definition should not be considered as an alternative to net income (loss) attributable to common shareholders (computed in accordance with GAAP) as an indicator of our financial performance.

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

	Three Months Ended March 31,
	2017			2016
Net income (loss) attributable to common shareholders	$	43,145		$	(4,106	)
Add: Depreciation and amortization:
Rental property	14,566			15,006
Unconsolidated joint ventures	870			881
(Gain) loss on sale of rental property	(42,799		)	1,155
Gain on sale of rental property owned through unconsolidated joint ventures(1)	(3,797		)	—
Net income (loss) attributable to noncontrolling interests in the Operating Partnership	1,884			(133		)
FFO available to common shareholders and unitholders	13,869			12,803
Dividends on preferred shares	—			2,248
Issuance costs of redeemed preferred shares (2)	—			1,904
FFO	$	13,869		$	16,955
Weighted average common shares and Operating Partnership units outstanding – basic	60,181			60,149
Weighted average common shares and Operating Partnership units outstanding – diluted	60,452			60,234

⁽¹⁾  Reflects our proportionate share of the gain on sale of Aviation Business Park and Rivers Park I and II, which were sold by the unconsolidated joint ventures that owned the respective properties in March 2017. For more information, see note 5, Investment in Affiliates, in the notes to our condensed consolidated financial statements.

⁽²⁾  Represents original issuance costs associated with the 7.750% Series A Preferred Shares that were redeemed during the three months ended March 31, 2016.

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 our 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 counter-party default or insolvency.

We had $649.5 million of debt outstanding at March 31, 2017, of which $231.7 million was fixed-rate debt and $240.0 million was hedged variable-rate debt. The remainder of our debt, $177.8 million, was unhedged variable-rate debt that consisted of $51.0 million under the unsecured revolving credit facility, $60.0 million under the unsecured term loan, a $32.2 million outstanding balance under the 440 First Street, NW Construction Loan and a $34.6 million outstanding balance under the Northern Virginia Construction Loan. At March 31, 2017, the 440 First Street, NW Construction Loan had a contractual interest rate of LIBOR plus 2.50%, and the Northern Virginia Construction Loan had a contractual interest rate of LIBOR plus 1.85%. At March 31, 2017, LIBOR was 0.98%. A change in interest rates of 100 basis points would result in an increase or decrease of $1.8 million in interest expense on our unhedged variable rate debt on an annualized basis.

Our gross debt balances exclude a total of $5.8 million of unamortized deferred financing costs at March 31, 2017.

52

The table below summarizes our interest rate swap agreements as of March 31, 2017 (dollars in thousands):

Maturity Date	Notional Amount		Interest Rate Contractual Component	Fixed LIBOR Interest Rate
July 2017	$	30,000	LIBOR	2.093	%
July 2017	30,000		LIBOR	2.093	%
July 2017	25,000		LIBOR	1.129	%
July 2017	12,500		LIBOR	1.129	%
July 2017	50,000		LIBOR	0.955	%
July 2018	12,500		LIBOR	1.383	%
July 2018	30,000		LIBOR	1.660	%
July 2018	25,000		LIBOR	1.394	%
July 2018	25,000		LIBOR	1.135	%
Total/Weighted Average	$	240,000		1.442	%

For fixed-rate debt, changes in interest rates generally affect the fair value of our debt but not our earnings or cash flow. See note 9, 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, 2017 that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

53

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 management, as of March 31, 2017, 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, 2017, 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, 2016.

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, 2017. No common Operating Partnership units were redeemed during the three months ended March 31, 2017,

Issuer Purchases of Equity Securities

During the three months ended March 31, 2017, certain employees surrendered common shares owed by them to satisfy their statutory minimum federal income tax obligation 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 our common share repurchases during the first quarter of 2017:

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, 2017 through January 31, 2017	—	$	—	—	—
February 1, 2017 through February 28, 2017	22,245	10.43		—	—
March 1, 2017 through March 31, 2017	—	—		—	—
Total	22,245	$	10.43	—	—

⁽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.

54

Item 6. Exhibits

No.	Description
3.1	First Amended and Restated Declaration of Trust of the Company (Incorporated by reference to Exhibit 3.1 to the Company’s Registration Statement on Form S-11 (Registration No. 333-107172) filed on October 1, 2003).
3.2	Articles Supplementary designating the Company’s 7.750% Series A Cumulative Redeemable Perpetual Preferred Shares, liquidation preference $25.00 per share, par value $0.001 per share (Incorporated by reference to Exhibit 3.2 to the Company’s Registration Statement on Form 8-A filed on January 18, 2011 (File No. 001-31824)).
3.3	Articles Supplementary establishing additional shares of the Company’s 7.750% Series A Cumulative Redeemable Perpetual Preferred Shares, liquidation preference $25.00 per share, par value $0.001 per share (Incorporated by reference to Exhibit 3.1 to the Company’s Current Report on Form 8-K filed on March 14, 2012 (File No. 001-31824)).
3.4	Second Amended and Restated Bylaws of the Company (Incorporated by reference to Exhibit 3.1 to the Company’s Current Report on Form 8-K (File No. 001-31824) filed on October 29, 2015).
4.1	Form of share certificate evidencing the Company’s Common Shares (Incorporated by reference to Exhibit 4.1 to the Company’s Registration Statement on Form S-3 (Registration No. 333-120821) filed on November 30, 2004).
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.

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, 2017, formatted in XBRL: (i) Consolidated Balance Sheets as of March 31, 2017 (unaudited) and December 31, 2016; (ii) Consolidated Statements of Operations (unaudited) for the three months ended March 31, 2017 and 2016; (iii) Consolidated Statements of Comprehensive Income (Loss) (unaudited) for the three months ended March 31, 2017 and 2016; (iv) Consolidated Statements of Cash Flows (unaudited) for the three months ended March 31, 2017 and 2016; and (v) Notes to Condensed Consolidated Financial Statements (unaudited).

*	Filed herewith.
**	Furnished herewith.

55

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 27, 2017	/s/ Robert Milkovich
	Robert Milkovich
	President, Chief Executive Officer and Chief Operating Officer
Date: April 27, 2017	/s/ Andrew P. Blocher
	Andrew P. Blocher
	Executive Vice President, Chief Financial Officer and Treasurer

56

EX-31.1

EXHIBIT 31.1

CERTIFICATION

I, Robert Milkovich, 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; and
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 27, 2017	/s/ Robert Milkovich
	Robert Milkovich
	President, Chief Executive Officer and
	Chief Operating 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; and
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 27, 2017	/s/ Andrew P. Blocher
	Andrew P. Blocher
	Executive Vice President, Chief Financial Officer
	and Treasurer

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, 2017, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Robert Milkovich, 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 27, 2017	/s/ Robert Milkovich
	Robert Milkovich
	President, Chief Executive Officer and
	Chief Operating 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, 2017, 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 27, 2017	/s/ Andrew P. Blocher
	Andrew P. Blocher
	Executive Vice President, Chief Financial Officer
	and Treasurer

XML

Document and Entity Information - shares	3 Months Ended
	Mar. 31, 2017	Apr. 27, 2017
Document And Entity Information [Abstract]
Entity Registrant Name	FIRST POTOMAC REALTY TRUST
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Mar. 31, 2017
Document Fiscal Year Focus	2017
Document Fiscal Period Focus	Q1
Entity Central Index Key	0001254595
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		58,716,398

XML

Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Assets:
Rental property, net	$ 1,024,605	$ 1,059,272
Assets held-for-sale	0	13,176
Cash and cash equivalents	13,269	14,144
Escrows and reserves	2,348	1,419
Accounts and other receivables, net of allowance for doubtful accounts of $922 and $655, respectively	5,611	6,892
Accrued straight-line rents, net of allowance for doubtful accounts of $471 and $414, respectively	45,211	42,745
Investment in affiliates	42,314	49,392
Deferred costs, net	41,603	42,712
Prepaid expenses and other assets	5,414	5,389
Intangible assets, net	23,622	25,106
Total assets	1,203,997	1,260,247
Liabilities:
Mortgage loans, net	295,523	296,212
Unsecured term loan, net	299,433	299,404
Unsecured revolving credit facility, net	48,758	141,555
Accounts payable and other liabilities	40,897	43,904
Accrued interest	1,470	1,537
Rents received in advance	6,493	6,234
Tenant security deposits	4,831	4,982
Deferred market rent, net	1,716	1,792
Total liabilities	699,121	795,620
Noncontrolling interests in the Operating Partnership	27,516	28,244
Equity:
Common shares, $0.001 par value per share, 150,000 shares authorized; 58,716 and 58,319 shares issued and outstanding, respectively	59	58
Additional paid-in capital	916,460	913,367
Accumulated other comprehensive loss	(273)	(844)
Dividends in excess of accumulated earnings	(438,886)	(476,198)
Total equity	477,360	436,383
Total liabilities, noncontrolling interests and equity	$ 1,203,997	$ 1,260,247

XML

Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Statement of Financial Position [Abstract]
Allowance for doubtful accounts, accounts and other receivables	$ 908	$ 876
Allowance for doubtful accounts, accrued straight-line rents	$ 316	$ 105
Preferred stock, par value	$ 0.001	$ 0.001
Preferred stock, shares authorized	50,000,000	50,000,000
Series A Preferred Shares liquidation preference	$ 25	$ 25
Series A Preferred Shares, shares issued	600,000	6,400,000
Series A Preferred Shares, shares outstanding	600,000	6,400,000
Common stock, par value	$ 0.001	$ 0.001
Common stock, shares authorized	150,000,000	150,000,000
Common stock, shares issued	58,129,000	57,718,000
Common stock, shares outstanding	58,129,000	57,718,000

XML

Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Revenues:
Rental	$ 30,818	$ 33,844
Tenant reimbursements and other	7,005	8,853
Total revenues	37,823	42,697
Operating expenses:
Property operating	9,958	11,537
Real estate taxes and insurance	4,661	5,216
General and administrative	4,497	4,578
Depreciation and amortization	14,566	15,006
Total operating expenses	33,682	36,337
Operating income	4,141	6,360
Other expenses (income)
Interest expense	6,344	6,816
Interest and other income	(210)	(1,003)
Equity in earnings of affiliates	(4,223)	(555)
(Gain) loss on sale of rental property	42,799	(1,155)
Loss on debt extinguishment	0	48
Total other expenses (income)	(40,888)	6,461
Income from continuing operations	45,029	(101)
Discontinued operations:
Net income (loss)	45,029	(101)
Less: Net (income) loss attributable to noncontrolling interests	(1,884)	147
Net income attributable to First Potomac Realty Trust	43,145	46
Less: Dividends on preferred shares	0	(2,248)
Less: Issuance costs of redeemed preferred shares	0	(1,904)	[1]
Net income (loss) attributable to common shareholders	$ 43,145	$ (4,106)
Basic and diluted earnings per common share:
Net income (loss) attributable to common shareholders - basic	$ 0.75	$ (0.07)
Net income (loss) attributable to common shareholders - dilutive	$ 0.74
Weighted average common shares outstanding:
Basic	57,635	57,542
Diluted	57,907	57,542

[1] Represents the original issuance costs associated with the redemption of 2.2 million 7.750% Series A Cumulative Redeemable Perpetual Preferred Shares (the “7.750% Series A Preferred Shares”) during the three months ended March 31, 2016.

XML

Consolidated Statements of Comprehensive (Loss) Income - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ 45,029	$ (101)
Unrealized gain on derivative instruments	596	169
Unrealized loss on derivative instruments	0	(1,031)
Total comprehensive income (loss)	45,625	(963)
Net (income) loss attributable to noncontrolling interests	(1,884)	147
Net (gain) loss from derivative instruments attributable to noncontrolling interests	(25)	36
Comprehensive income (loss) attributable to First Potomac Realty Trust	$ 43,716	$ (780)

XML

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Dec. 31, 2016
Cash flows from operating activities:
Net income (loss)	$ 45,029	$ (101)
Discontinued operations:
Depreciation and amortization	14,823	15,303
Stock based compensation	829	488
Bad debt expense	324	105
Amortization of deferred market rent	50	79
Amortization of financing costs and discounts	434	472
Equity in earnings of affiliates	(4,223)	(555)
Distributions from investments in affiliates	0	425
Gain (Loss) on Sale of Properties	(42,799)	1,155
Changes in assets and liabilities:
Escrows and reserves	(929)	375
Accounts and other receivables	1,007	1,358
Accrued straight-line rents	(2,883)	(1,725)
Prepaid expenses and other assets	(6)	205
Tenant security deposits	(129)	(748)
Accounts payable and accrued expenses	(1,474)	(2,313)
Accrued interest	(67)	39
Rents received in advance	259	70
Deferred costs	(1,171)	(682)
Total adjustments	(35,955)	14,051
Net cash provided by operating activities	9,074	13,950
Cash flows from investing activities:
Proceeds from sale of rental property	85,754	90,501
Change In Escrow And Reserves	0	246
Additions to rental property and furniture, fixtures and equipment	(6,569)	(17,502)
Additions to construction in progress	(242)	(5,141)
Proceeds from Sale of Equity Method Investments	11,301	0
Net cash provided by investing activities	90,244	68,104
Cash flows from financing activities:
Financing costs	0	(245)
Issuance of debt	4,000	80,243
Repayments of debt	97,891	93,119
Dividends to common shareholders	(5,815)	(8,701)
Dividends to preferred shareholders	0	(2,776)
Distributions to noncontrolling interests	(255)	(393)
Repurchase of Common Shares	(232)	(122)
Redemption of preferred shares	0	(55,000)
Redemption of operating partnership units	0	(319)
Net cash used in financing activities	(100,193)	(80,432)
Net (decrease) increase in cash and cash equivalents	(875)	1,622
Cash and cash equivalents, beginning of period	14,144	13,527	$ 13,527
Cash and cash equivalents, end of period	13,269	15,149	14,144
Cash paid for interest, net	5,975		6,251
Non-cash investing and financing activities:
Value of common shares retired to settle employee income tax obligations	232	$ 122
Change in fair value of the outstanding common Operating Partnership units	(2,383)		(1,324)
Changes in accruals:
Additions to rental property and furniture, fixtures and equipment	1,610		(421)
Additions to development and redevelopment	$ (474)		$ 1,190

XML

Consolidated Statements of Cash Flows (Parenthetical) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Capitalized interest on indebtedness paid in cash	$ 0	$ (200)
Shares Tendered By Employees For Statutory Tax Withholdings Upon Issuance Of Common Stock	232	122
Fair value adjustment, cost basis	3,700
Change in redemption value, noncontrolling interest		2,900
Furniture and Fixtures [Member]
Accrued capital expenditure	4,600	10,300
Development and Redevelopment [Member]
Accrued capital expenditure	$ 600	$ 4,500

XML

Description of Business

3 Months Ended

Mar. 31, 2017

Accounting Policies [Abstract]

Description of Business

Description of Business

First Potomac Realty Trust (the “Company”) is a leader in the ownership, management, redevelopment and development of office and business park properties in the greater Washington, D.C. region. The Company’s focus is owning and operating properties that the Company believes can benefit from its market knowledge and intensive operational skills with a focus on increasing 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. 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.

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 our Operating Partnership. We are the sole general partner of, and, as of March 31, 2017, owned 95.8% 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 that are owned by unrelated parties.

At March 31, 2017, we wholly owned properties totaling 6.0 million square feet and had a noncontrolling ownership interest in properties totaling an additional 0.4 million square feet through two unconsolidated joint ventures. We also owned land that can support 0.4 million square feet of additional development. Our consolidated properties were 92.4% occupied by 372 tenants at March 31, 2017. We do not include the square footage of properties in development or redevelopment, which totaled 0.1 million square feet at March 31, 2017, in our occupancy calculation. We derive substantially all of our revenue from leases of space within our properties. As of March 31, 2017, our largest tenant was the U.S. Government, which accounted for 14.0% of our total annualized cash basis rent, and the U.S. Government combined with government contractors accounted for 20.9% of our total annualized cash basis rent as of March 31, 2017. We operate so as to qualify as a real estate investment trust (“REIT”) for federal income tax purposes.

XML

Summary of Significant Accounting Policies

3 Months Ended

Mar. 31, 2017

Accounting Policies [Abstract]

Summary of Significant Accounting Policies

Summary of Significant Accounting Policies

(a) Principles of Consolidation

Our unaudited condensed consolidated financial statements include our accounts and the accounts of our Operating Partnership, which we consider to be a variable interest entity (“VIE”), and the subsidiaries in which we or our 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, 2016 and as updated from time to time in our other filings with 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, 2017 and the results of our operations, our comprehensive income (loss) and our cash flows for the three months ended March 31, 2017 and 2016. 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 unaudited 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 unaudited 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, 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, when acquired in a business combination, or initial cost when constructed or acquired in an asset purchase. 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 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. 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 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 have made the decision to dispose of the building, our Board of Trustees or a designated delegate has approved the sale, there is a binding contract pursuant to which the buyer has significant money at risk, or 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. We will cease recording depreciation on a building once it has been classified as held-for-sale.

We will also determine whether the disposal of a building qualifies as a discontinued operation in accordance with GAAP by assessing whether the disposal of the building, or group of buildings, represents a strategic shift that has, or will have, a major effect on the Company’s operations or financial results. If the building does not qualify as a discontinued operation in accordance with GAAP, we will classify the building’s operating results, together with any impairment charges and any gains or losses on the sale of the building, in continuing operations for all periods presented in our consolidated statements of operations. We will classify the assets and liabilities related to the building as held-for-sale in our consolidated balance sheet for the period the held-for-sale criteria were met.

If the building does qualify as a discontinued operation under GAAP, we will classify the building’s operating results, together with any impairment charges and any gains or losses on the sale of the building, in discontinued operations in our consolidated statements of operations for all periods presented and classify the assets and liabilities related to the building as held-for-sale in our consolidated balance sheets for the periods presented. Interest expense is reclassified to discontinued operations only to the extent the disposed or 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.

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 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 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, 2017 and 2016. Capitalization of interest ends 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 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) Application of New Accounting Standards

In January 2017, we adopted Accounting Standards Update No. 2014-15, Disclosure of Uncertainties about an Entity’s Ability to Continue as a Going Concern (“ASU 2014-15”), which requires an entity to evaluate whether conditions or events, in the aggregate, raise substantial doubt about the entity’s ability to continue as a going concern for one year from the date the financial statements are issued or are available to be issued. The adoption of ASU 2014-15 did not have a material impact on our unaudited condensed consolidated financial statements and related disclosures.

In January 2017, we adopted Accounting Standards Update No. 2016-09, Improvements to Employee Share-Based Payment Accounting (“ASU 2016-09”), which is intended to simplify several aspects of the accounting for employee share-based payment transactions, including income tax consequences, classification of awards as either equity or liabilities and classification on the statement of cash flows. ASU 2016-09 requires us to classify cash payments made on behalf of employees for taxes owed on the vesting of restricted common shares, for which we withhold vested common shares owed to the employee in an amount that equates to the value of the employee’s tax obligation, as a financing activity on our statements of cash flows. We elected to adopt ASU 2016-09 retrospectively and the adoption of ASU 2016-09 did not have a material impact on our unaudited condensed consolidated financial statements and related disclosures.

In January 2017, we adopted Accounting Standards Update No. 2016-17, Consolidation (Topic 810): Interests Held through Related Parties That Are under Common Control (“ASU 2016-17”), which requires a single decision maker or service provider, in evaluating whether it is the primary beneficiary, to consider on a proportionate basis indirect interests held through related parties under common control. The adoption of ASU 2016-17 did not have a material impact on our unaudited condensed consolidated financial statements and related disclosures.

In January 2017, we adopted Accounting Standards Update No. 2017-01, Business Combinations (Topic 805): Clarifying the Definition of a Business (“ASU 2017-01”), which was issued by the Financial Accounting Standards Board (“FASB”) in January 2017. ASU 2017-01 provides a new framework for determining whether transactions should be accounted for as acquisitions (or disposals) of assets or businesses. We anticipate ASU 2017-01 will change our accounting treatment of future property acquisitions; however, the adoption of ASU 2017-01 did not have a material impact on our unaudited condensed consolidated financial statements and related disclosures.

In May 2014, the FASB issued Accounting Standards Update No. 2014-09, Revenue from Contracts with Customers (“ASU 2014-09”), which requires an entity to recognize the amount of revenue to which it expects to be entitled for the transfer of promised goods or services to customers and will replace most existing revenue recognition guidance when it becomes effective. In July 2015, the FASB deferred by one year the mandatory effective date of ASU 2014-09 from January 1, 2017 to January 1, 2018. Early adoption is permitted, but not prior to the original effective date of January 1, 2017. ASU 2014-09 permits the use of either the retrospective or cumulative effect transition method. We have begun to evaluate each of the revenue streams under the new model and the pattern of recognition is not expected to change significantly. We have not yet selected a transition method and are evaluating the impact that ASU 2014-09 will have on our consolidated financial statements and related disclosures.

In January 2016, the FASB issued Accounting Standards Update No. 2016-01, Recognition and Measurement of Financial Assets and Financial Liabilities (“ASU 2016-01”), which requires, among other things, entities to use the exit price notion when measuring the fair value of financial instruments for disclosure purposes and eliminates the requirement for public business entities to disclose the method(s) and significant assumptions used to estimate the fair value disclosed for financial instruments measured at amortized cost on the balance sheet. ASU 2016-01 is effective for periods beginning after December 15, 2017; early adoption is not permitted. The guidance is not expected to have a material impact on our consolidated financial statements and related disclosures.

In February 2016, the FASB issued Accounting Standards Update No. 2016-02, Leases (“ASU 2016-02”), which requires a lessee to record on the balance sheet a right-of-use asset with a corresponding lease liability created by lease terms of more than 12 months. Additional qualitative and quantitative disclosures will also be required. The guidance will become effective for periods beginning after December 15, 2018 and will be applied using a modified retrospective transition method. We are currently evaluating the impact that ASU 2016-02 will have on our consolidated financial statements and related disclosures.

In August 2016, the FASB issued Accounting Standards Update No. 2016-15, Classification of Certain Cash Receipts and Cash Payments (“ASU 2016-15”). The guidance addresses eight classification issues related to the statement of cash flows, including debt prepayment or debt extinguishment costs and distributions received from equity-method investees. The guidance will become effective for periods beginning after December 15, 2017 and early adoption is permitted. ASU 2016-15 requires the use of a retrospective transition method to each period presented. If such retrospective transition is impracticable for certain issues, the adoption of ASU 2016-15 for the applicable issues may be applied prospectively as of the earliest date practicable. The guidance is not expected to have a material impact on our consolidated financial statements or related disclosures.

In November 2016, the FASB issued Accounting Standards Update No. 2016-18, Statement of Cash Flows (Topic 230): Restricted Cash (“ASU 2016-18”), which requires companies to include cash and cash equivalents that have restrictions on withdrawal or use in total cash and cash equivalents on the statement of cash flows. ASU 2016-18 is effective for periods beginning after December 15, 2017 and early adoption is permitted. The guidance is not expected to have a material impact on our consolidated financial statements and related disclosures.

In January 2017, the FASB issued Accounting Standards Update No. 2017-04, Intangibles - Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment (“ASU 2017-04”), which requires an entity to no longer perform a hypothetical purchase price allocation to measure goodwill impairment. Instead, impairment will be measured using the difference between the carrying amount and the fair value of the reporting unit. ASU 2017-04 is effective for periods beginning after December 15, 2019 and early adoption is permitted for measurement dates after January 1, 2017. The guidance is not expected to have a material impact on our consolidated financial statements and related disclosures.

In February 2017, the FASB issued Accounting Standards Update No. 2017-05, Other Income - Gains and Losses from the Derecognition of Nonfinancial Assets (Subtopic 610-20): Clarifying the Scope of Asset Derecognition Guidance and Accounting for Partial Sales of Nonfinancial Assets (“ASU 2017-05”), which clarifies the guidance in Subtopic 610-20 on accounting for derecognition of a nonfinancial asset. The update also defines in-substance nonfinancial assets and includes guidance on partial sales of nonfinancial assets. The amendments in ASU 2017-05 are to be applied at the same time that ASU 2014-09 is applied. We are currently evaluating the impact that ASU 2017-05 will have on our consolidated financial statements and related disclosures.

(e) Reclassifications

Certain prior year amounts have been reclassified to conform to the current year presentation, primarily as a result of adopting ASU 2016-09 in January 2017. See note 2(d), Summary of Significant Accounting Policies - Application of New Accounting Standards for more information.

XML

Earnings Per Common Share

3 Months Ended

Mar. 31, 2017

Earnings Per Share [Abstract]

Earnings Per Common Share

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 and non-vested 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 (dollars in thousands, except per share amounts):

	Three Months Ended March 31,
	2017			2016
Numerator for basic and diluted earnings per common share:
Net income (loss)	$	45,029		$	(101	)
Less: Net (income) loss attributable to noncontrolling interests	(1,884		)	147
Net income attributable to First Potomac Realty Trust	43,145			46
Less: Dividends on preferred shares	—			(2,248		)
Less: Issuance costs of redeemed preferred shares (1)	—			(1,904		)
Net income (loss) attributable to common shareholders	43,145			(4,106		)
Less: Allocation to participating securities	(55		)	(73		)
Net income (loss) attributable to common shareholders	$	43,090		$	(4,179	)
Denominator for basic and diluted earnings per common share:
Weighted average common shares outstanding - basic	57,635			57,542
Weighted average common shares outstanding - diluted	57,907			57,542
Basic and diluted earnings per common share:
Net income (loss) attributable to common shareholders - basic	$	0.75		$	(0.07	)
Net income (loss) attributable to common shareholders - diluted	$	0.74		$	(0.07	)

⁽¹⁾  Represents the original issuance costs associated with the redemption of 2.2 million7.750% Series A Cumulative Redeemable Perpetual Preferred Shares (the “7.750% Series A Preferred Shares”) during the three months ended March 31, 2016.

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,
	2017	2016
Stock option awards	879	1,018
Non-vested share awards	595	484
	1,474	1,502

XML

Rental Property

3 Months Ended

Mar. 31, 2017

Real Estate [Abstract]

Rental Property

Rental Property

Rental property represents wholly-owned buildings and related improvements, net of accumulated depreciation, and developable land. All of our rental properties are located within the greater Washington, D.C. region. Rental property consists of the following (dollars in thousands):

	March 31, 2017			December 31, 2016(1)
Land and land improvements	$	269,920		$	282,923
Buildings and improvements	766,394			824,867
Construction in progress	29,793			4,605
Tenant improvements	185,264			189,031
Furniture, fixtures and equipment	374			408
	1,251,745			1,301,834
Less: accumulated depreciation	(227,140		)	(242,562		)
	$	1,024,605		$	1,059,272

⁽¹⁾ Excludes rental property totaling $13.2 million at December 31, 2016 related to One Fair Oaks, which was classified as held-for-sale at December 31, 2016 and was sold on January 9, 2017.

Development and Redevelopment Activity

We will place completed development and redevelopment assets in-service upon the earlier of one year after major construction activity is deemed to be substantially complete or upon occupancy. We construct office buildings and/or business parks on a build-to-suit basis or with the intent to lease upon completion of construction. At March 31, 2017, we owned developable land that can accommodate 0.4 million square feet of additional building space, of which 34 thousand is located in the Washington, D.C. reporting segment, 0.1 million in the Maryland reporting segment, 0.2 million in the Northern Virginia reporting segment and 0.1 million in the Southern Virginia reporting segment.

In March 2017, the sole tenant of 540 Gaither Road at Redland (“Redland I”) exercised its early termination option and vacated the 133,895 square-foot building, which is located in our Maryland reporting segment. Upon the tenant vacating Redland I, the building was placed into redevelopment. At March 31, 2017, our total investment in the building under redevelopment was $23.6 million, which included the $23.0 million total original cost basis of the building and land. The majority of costs incurred as of March 31, 2017 in excess of the original cost basis of the building and land related to site planning and design costs.

During the first quarter of 2017, we did not place in-service any completed development or redevelopment space. At March 31, 2017, we did not have any completed development or redevelopment space that had yet to be placed in-service.

XML

Notes Receivable

3 Months Ended

Mar. 31, 2017

Receivables [Abstract]

Notes Receivable

Notes Receivable

On June 2, 2016, the owners of 950 F Street, NW, a ten-story, 287,000 square-foot office/retail building located in Washington, D.C., prepaid a mezzanine loan that was secured by a portion of the owners’ interest in the property and had an outstanding balance of $34.0 million. The mezzanine loan, which had a fixed interest rate of 9.75% was scheduled to mature on April 1, 2017 and had been prepayable since December 21, 2015. In addition to the prepayment of the loan's entire principal balance, we received interest through June 24, 2016 and an exit fee upon the loan's prepayment. We recognized $0.2 million of accelerated income in the second quarter of 2016 related to the payment of the exit fee, which is reflected in “Interest and other income” on our consolidated statement of operations for the nine months ended September 30, 2016. We used the proceeds from the prepayment of the note receivable to redeem the remaining 0.6 million 7.750% Series A Preferred Shares outstanding and to pay down a portion of our unsecured revolving credit facility.

We recorded interest income related to our notes receivable of $0.8 million for the three months ended March 31, 2016 which is included within “Interest and other income” on our consolidated statements of operations. No interest income related to our notes receivable was recorded for the three months ended March 31, 2017.

XML

Investment in Affiliates

3 Months Ended

Mar. 31, 2017

Equity Method Investments and Joint Ventures [Abstract]

Investment in Affiliates

Investment in Affiliates

We own an interest in several unconsolidated joint ventures, two of which currently 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 non-controlled joint ventures are not consolidated within our unaudited condensed consolidated financial statements. Our investments in these joint ventures are recorded as “Investment in affiliates” on our consolidated balance sheets. On March 7, 2017, three of our unconsolidated joint ventures collectively sold Aviation Business Park, a 120,284 square-foot office building, and Rivers Park I and II, a 307,984 square-foot business park, which were all located in our Maryland reporting segment. Based on our percentage ownership of the joint ventures, our share of gross proceeds from the sale totaled $19.0 million, which generated $18.4 million of net proceeds. We used the net proceeds from the sale to repay $7.0 million (our proportionate share) of mortgage debt encumbering Rivers Park I and II, and the remainder was used to repay a portion of the outstanding balance under our unsecured revolving credit facility. We have had, and will have, no continuing involvement in the ownership decisions of any of the unconsolidated joint ventures’ disposed properties subsequent to their disposal.

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

	Reporting Segment	Ownership Interest	Investment at March 31, 2017		Investment at December 31, 2016
Prosperity Metro Plaza	Northern Virginia	51%	$	26,772	$	26,414
1750 H Street, NW	Washington, D.C.	50%	14,594		14,624
Aviation Business Park(1)	Maryland	50%	482		5,941
Rivers Park I and II(1)(2)	Maryland	25%	466		2,413
			$	42,314	$	49,392

⁽¹⁾ The unconsolidated joint ventures that owned Aviation Business Park and Rivers Park I and II sold these properties on March 7, 2017. Our investment in these joint ventures at March 31, 2017 is primarily comprised of our share of cash that has not yet been distributed.

⁽²⁾   Rivers Park I and Rivers Park II were owned through two separate unconsolidated joint ventures.

The following table provides a summary of the mortgage debt held by our unconsolidated joint ventures (dollars in thousands):

	FPO Ownership	Effective Interest Rate	Maturity Date	Principal Balance at March 31, 2017(1)		Principal Balance at December 31, 2016(1)
Rivers Park I and II (2)	25%	LIBOR + 1.90%(3)	September 2017	$	—	$	28,000
1750 H Street, NW(4)	50%	3.92%	August 2024	32,000		32,000
Prosperity Metro Plaza(5)	51%	3.91%	December 2029	50,000		50,000
Weighted Average / Total		3.91%		$	82,000	$	110,000

⁽¹⁾  Reflects the entire balance of the debt secured by the properties, not our portion of the debt.

⁽²⁾  The unconsolidated joint ventures that owned Rivers Park I and II sold these properties on March 7, 2017. The unconsolidated joint venture partners used net proceeds from the sale to repay the mortgage debt encumbering the properties. At December 31, 2016, $2.8 million of the outstanding mortgage balance was recourse to us.

⁽³⁾  At March 31, 2017, LIBOR was 0.98%. All references to LIBOR in the condensed consolidated financial statements refer to one-month LIBOR.

⁽⁴⁾  The loan requires interest-only payments with a constant interest rate over the life of the loan. The loan is repayable in full, without penalty, on or after August 1, 2021.

⁽⁵⁾  The loan requires interest-only payments through December 2024, at which time the loan requires principal and interest payments through its maturity date. The loan is repayable in full, without penalty, on or after June 1, 2029.

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

	March 31, 2017		December 31, 2016
Assets:
Rental property, net	$	144,065	$	189,245
Cash and cash equivalents	11,122		9,887
Other assets	16,472		20,726
Total assets	171,659		219,858
Liabilities:
Mortgage loans, net(1)(2)	81,416		109,372
Other liabilities	6,503		8,674
Total liabilities	87,919		118,046
Net assets	$	83,740	$	101,812

⁽¹⁾  Of the total mortgage debt that encumbers our unconsolidated properties, none was recourse to us at March 31, 2017 and $2.8 million was recourse to us at December 31, 2016.

⁽²⁾  Mortgage loans, net at both March 31, 2017 and December 31, 2016 included $0.6 million of unamortized deferred financing costs

Our share of earnings or losses related to our unconsolidated joint ventures is recorded in our consolidated statements of operations as “Equity in earnings of affiliates.” The following table summarizes the results of operations of our unconsolidated joint ventures for the periods presented, of which, our proportionate share is reflected in “Equity in earnings of affiliates” in our consolidated statements of operations based on our varying ownership interests in the unconsolidated joint ventures (dollars in thousands):

	Three Months Ended March 31,
	2017			2016
Total revenues	$	5,679		$	6,290
Total operating expenses	(1,937		)	(2,166		)
Net operating income	3,742			4,124
Depreciation and amortization	(1,863		)	(1,966		)
Interest expense, net	(962		)	(993		)
Gain on sale of rental property	10,324			—
Net income	$	11,241		$	1,165

The following table summarizes the results of operations of Aviation Business Park and Rivers Park I and II, which were sold in March 2017, of which, our proportionate share is reflected in “Equity in earnings of affiliates” in our consolidated statements of operations based on our varying ownership interests in the unconsolidated joint ventures that owned the respective properties (dollars in thousands):

	Three Months Ended March 31,
	2017			2016
Total revenues	$	1,113		$	1,631
Total operating expenses	(275		)	(641		)
Net operating income	838			990
Depreciation and amortization	(420		)	(643		)
Interest expense, net	(146		)	(175		)
Income from operations of disposed properties	272			172
Gain on sale of rental property	10,324			—
Net income	$	10,596		$	172

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 for the three months ended March 31, 2017 and 2016, respectively, which are reflected within “Tenant reimbursements and other revenues” on our consolidated statements of operations.

XML

Dispositions

3 Months Ended

Mar. 31, 2017

Discontinued Operations and Disposal Groups [Abstract]

Dispositions

Dispositions

We will report a disposed or held-for-sale property or group of properties in discontinued operations only if the disposal represents a strategic shift that has, or will have, a major effect on our operations and financial results. All other disposed properties will have their operating results reflected within continuing operations on our consolidated statements of operations for all periods presented.

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. Other than the properties discussed below in this note 6, Dispositions, and in note 5, Investment in Affiliates, we did not dispose of or enter into any agreements to sell any other properties during the three months ended March 31, 2017 and 2016.

Disposed or Held-for-Sale Properties within Continuing Operations

The following table is a summary of property dispositions whose operating results are included in continuing operations in our consolidated statements of operations for the periods presented (dollars in thousands):

Property	Reporting Segment	Disposition Date	Property Type	Square Feet	Net Sale Proceeds
Plaza 500	Northern Virginia	2/17/2017	Industrial	502,830	$	72,499
One Fair Oaks (1)	Northern Virginia	1/9/2017	Office	214,214	13,255
Storey Park(2)	Washington, D.C.	7/25/2016	Land	—	52,659
NOVA Non-Core Portfolio(3)	Northern Virginia	3/25/2016	Various	945,745	90,501

⁽¹⁾  One Fair Oaks was classified as held-for-sale at December 31, 2016, and the building was vacant at the time of sale.

⁽²⁾   This development site could have supported up to 712,000 rentable square feet.

⁽³⁾   Consists of Van Buren Office Park, Herndon Corporate Center, Windsor at Battlefield, Reston Business Campus, Enterprise Center, Gateway Centre Manassas, Linden Business Center and Prosperity Business Center (collectively, the “NOVA Non-Core Portfolio”).

On February 17, 2017, we sold Plaza 500 for net proceeds of $72.5 million and recorded a gain on sale of $42.7 million. The sale of Plaza 500 represented the divestiture of our last industrial property. We used the proceeds to pay down a portion of the outstanding balance under our unsecured revolving credit facility.

On January 9, 2017, we sold One Fair Oaks for net proceeds of $13.3 million and recorded a gain on sale of $0.1 million. We used the proceeds to pay down a portion of the outstanding balance under our unsecured revolving credit facility. One Fair Oaks met our held-for-sale criteria at December 31, 2016 and, therefore, the assets of the building were classified within “Assets-held-for-sale” on our consolidated balance sheet at December 31, 2016. The assets classified within held-for-sale as of December 31, 2016 primarily consisted of $17.6 million in building and building improvements, $1.6 million of land, and $6.0 million of accumulated depreciation. No material liabilities were classified as held-for-sale at December 31, 2016.

The following table summarizes the aggregate results of operations for the disposed or held-for-sale properties that are included in continuing operations for the periods presented (dollars in thousands):

	Three Months Ended March 31,
	2017			2016
Revenues	$	804		$	7,043
Property operating expenses	(304		)	(2,823		)
Depreciation and amortization	(289		)	(1,343		)
Interest expense	—			(184		)
Loss on debt extinguishment	—			(48		)
Income from operations of disposed property	211			2,645
Gain (loss) on sale of rental property(1)	42,799			(1,155		)
Net income from continuing operations	$	43,010		$	1,490

⁽¹⁾ During the first quarter of 2017, we recorded a $0.1 million gain on the sale of One Fair Oaks and a $42.7 million gain on the sale of Plaza 500. During the first quarter of 2016, we recorded a $1.2 million loss on the sale of the NOVA Non-Core Portfolio.

XML

Debt

3 Months Ended

Mar. 31, 2017

Debt Disclosure [Abstract]

Debt

Debt

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

	March 31,   2017(1)		December 31, 2016(1)
Mortgage loans, net, effective interest rates ranging from 4.22% to 6.01%, maturing at various dates through September 2030(2)(3)	$	295,523	$	296,212
Unsecured term loan, net, effective interest rates ranging from LIBOR plus 1.45% to LIBOR plus 1.80%, with staggered maturity dates ranging from December 2020 to December 2022(2)	299,433		299,404
Unsecured revolving credit facility, net, effective interest rate of LIBOR plus 1.50%, maturing December 2019(2)	48,758		141,555
Total	$	643,714	$	737,171

⁽¹⁾  The balances include a total of $5.8 million and $6.2 million of unamortized deferred financing costs at March 31, 2017 and December 31, 2016, respectively.

⁽²⁾  At March 31, 2017, LIBOR was 0.98%.

⁽³⁾  The balances at March 31, 2017 and December 31, 2016 include two construction loans.

(a) Mortgage Loans

The following table provides a summary of our mortgage debt, which includes two construction loans (dollars in thousands):

Encumbered Property	Contractual Interest Rate		Effective Interest Rate			Maturity Date	March 31,   2017			December 31, 2016
440 First Street, NW Construction Loan(1)(2)	LIBOR + 2.50%		LIBOR + 2.50%			May 2017	$	32,216		$	32,216
Redland II and III	4.20	%	4.64	%		November 2017	62,873			63,214
Northern Virginia Construction Loan(3)	LIBOR + 1.85%		LIBOR + 1.85%			September 2019	34,584			34,584
840 First Street, NE	5.72	%	6.01	%		July 2020	35,023			35,201
Battlefield Corporate Center	4.26	%	4.40	%		November 2020	3,309			3,353
1211 Connecticut Avenue, NW	4.22	%	4.47	%		July 2022	28,347			28,503
1401 K Street, NW	4.80	%	4.93	%		June 2023	35,384			35,556
11 Dupont Circle, NW	4.05	%	4.22	%		September 2030	66,780			66,780
Principal balance			4.45	%	(4)		298,516			299,407
Unamortized deferred financing costs							(2,993		)	(3,195		)
Total balance, net							$	295,523		$	296,212

⁽¹⁾  At March 31, 2017, LIBOR was 0.98%.

⁽²⁾  This construction loan is collateralized by 440 First Street, NW. In May 2016, we extended the maturity date by one year to May 30, 2017. 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, 2017, per the terms of the loan agreement, 50% of the outstanding principal balance and all of the outstanding accrued interest were recourse to us.

⁽³⁾  This construction loan has a borrowing capacity of up to $43.7 million and is collateralized by the NOVA build-to-suit, which was placed in-service in the third quarter of 2016. We can repay all or a portion of the Northern Virginia Construction Loan, without penalty, at any time during the term of the loan.

⁽⁴⁾  Represents the weighted average interest rate on total mortgage debt.

(b) Unsecured Term Loan and Unsecured Revolving Credit Facility

The table below shows the outstanding balances and the interest rates of the three tranches of the $300.0 million unsecured term loan and the unsecured revolving credit facility at March 31, 2017 and December 31, 2016 (dollars in thousands):

	Maturity Date	Interest Rate(1)	March 31, 2017			December 31, 2016
Unsecured Term Loan
Tranche A	December 2020	LIBOR + 1.45%	$	100,000		$	100,000
Tranche B	June 2021	LIBOR + 1.45%	100,000			100,000
Tranche C	December 2022	LIBOR + 1.80%	100,000			100,000
Total			300,000			300,000
Unamortized deferred financing costs			(567		)	(596		)
Total, net			$	299,433		$	299,404
Unsecured Revolving Credit Facility
Outstanding borrowings	December 2019(2)	LIBOR + 1.50% (3)	$	51,000		$	144,000
Unamortized deferred financing costs			(2,242		)	(2,445		)
Total, net			$	48,758		$	141,555

⁽¹⁾  Reflects the interest rate spreads at March 31, 2017. At March 31, 2017, LIBOR was 0.98%. The interest rate spread is subject to change based on our maximum total indebtedness ratio. For more information, see note 7(d), Debt – Financial Covenants.

⁽²⁾  The maturity date of the unsecured revolving credit facility may be extended for two, six-month terms at our option.

⁽³⁾  At March 31, 2017, our outstanding borrowings under the unsecured revolving credit facility had a weighted average interest rate of 2.5%.

During the three months ended March 31, 2017, we repaid $97.0 million of the outstanding balance under the unsecured revolving credit facility. In January 2017, we used the net proceeds from the sale of One Fair Oaks and available cash to repay $14.0 million of the outstanding balance under our unsecured revolving credit facility. In February 2017, we used a portion of the net proceeds from the sale of Plaza 500 to repay $70.0 million of the outstanding balance under our unsecured revolving credit facility. In March 2017, we used our proportionate share of the net proceeds from the sale of Aviation Business Park and Rivers Park I and II to repay $7.0 million of the mortgage loan that encumbered Rivers Park I and II (our proportionate share) and the remainder was used, together with available cash, to repay $13.0 million of the outstanding balance under our unsecured revolving credit facility. During the three months ended March 31, 2017, we borrowed $4.0 million under the unsecured revolving credit facility for general corporate purposes.

For the three months ended March 31, 2017, our weighted average borrowings outstanding under the unsecured revolving credit facility were $96.6 million with a weighted average interest rate of 2.3% compared with weighted average borrowings of $169.5 million and a weighted average interest rate of 1.9% for the three months ended March 31, 2016. Our maximum outstanding borrowings were $144.0 million and $193.0 million during the three months ended March 31, 2017 and 2016, respectively.

As of the date of this filing, we had $51.0 million outstanding and $172.0 million available capacity under the unsecured revolving credit facility. We are required to pay a commitment fee at an annual rate of 0.15% of the unused capacity if our usage exceeds 50% of our total capacity under the revolving credit facility, or 0.25% if our usage does not exceed 50%.

(c) Interest Rate Swap Agreements

At March 31, 2017, we had nine interest rate swap agreements outstanding that collectively fixed LIBOR, at a weighted average interest rate of 1.4%, on $240.0 million of our variable rate debt. See note 8, Derivative Instruments, for more information about our interest rate swap agreements.

(d) Financial Covenants

The credit agreement governing our unsecured revolving credit facility and unsecured term loan contains various restrictive covenants, including with respect to liens, indebtedness, investments, distributions, mergers and asset sales. 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 under the agreement to be immediately due and payable.

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. These covenants relate to our allowable leverage, minimum tangible net worth, fixed charge coverage and other financial metrics. As of March 31, 2017, we were in compliance with the covenants of our amended, restated and consolidated unsecured revolving credit facility and unsecured term loan, the 440 First Street, NW Construction Loan and the Northern Virginia 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, 2017, the applicable interest rate spreads on the unsecured revolving credit facility and the unsecured term loan will remain unchanged.

XML

Derivative Instruments

3 Months Ended

Mar. 31, 2017

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Derivative Instruments

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 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.

At March 31, 2017, we had nine interest rate swap agreements outstanding that collectively fixed LIBOR, at a weighted average interest rate of 1.4%, on $240.0 million of our variable rate debt. Our interest rate swap agreements are summarized below (dollars in thousands):

Maturity Date	Notional Amount		Interest Rate Contractual Component	Fixed LIBOR Interest Rate
July 2017	$	30,000	LIBOR	2.093	%
July 2017	30,000		LIBOR	2.093	%
July 2017	25,000		LIBOR	1.129	%
July 2017	12,500		LIBOR	1.129	%
July 2017	50,000		LIBOR	0.955	%
July 2018	12,500		LIBOR	1.383	%
July 2018	30,000		LIBOR	1.660	%
July 2018	25,000		LIBOR	1.394	%
July 2018	25,000		LIBOR	1.135	%
Total/Weighted Average	$	240,000		1.442	%

Our interest rate swap agreements are designated as cash flow hedges and we record the effective portion of 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 the effective portion of any unrealized losses within “Accumulated other comprehensive loss” and “Accounts payable and other liabilities” 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, 2017 and 2016.

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 losses as an increase to interest expense of $0.4 million and $0.8 million for the three months ended March 31, 2017 and 2016, respectively. As of March 31, 2017, we estimated that $0.4 million of our accumulated other comprehensive loss will be reclassified as an increase to interest expense over the following twelve months.

XML

Fair Value Measurements

3 Months Ended

Mar. 31, 2017

Fair Value Disclosures [Abstract]

Fair Value Measurements

Fair Value Measurements

Our application of GAAP 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, 2017 and December 31, 2016 (dollars in thousands):

	Balance at    March 31, 2017		Level 1		Level 2		Level 3
Recurring Measurements:
Derivative instrument-swap assets	$	68	$	—	$	68	$	—
Derivative instrument-swap liabilities	378		—		378		—
	Balance at    December 31, 2016		Level 1		Level 2		Level 3
Recurring Measurements:
Derivative instrument-swap liabilities	$	906	$	—	$	906	$	—

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, 2017 and 2016. 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, 2017 and 2016.

Interest Rate Derivatives

At March 31, 2017, we had hedged $240.0 million of our variable rate debt through nine interest rate swap agreements. See note 8, Derivative Instruments, for more information about our interest rate swap agreements.

The interest rate derivatives are fair valued based on prevailing market yield curves on the measurement date and also 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. 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 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.

The carrying amount and estimated fair value of our debt instruments are as follows (dollars in thousands):

	March 31, 2017				December 31, 2016
	Carrying Value(1)		Fair Value		Carrying Value(1)		Fair Value
Financial Liabilities:
Mortgage debt	$	298,516	$	296,923	$	299,407	$	300,927
Unsecured term loan	300,000		300,000		300,000		300,000
Unsecured revolving credit facility	51,000		51,000		144,000		144,000
Total	$	649,516	$	647,923	$	743,407	$	744,927

⁽¹⁾  The debt balances exclude a combined total of $5.8 million and $6.2 million of unamortized deferred financing costs at March 31, 2017 and December 31, 2016, respectively.

XML

Equity

3 Months Ended

Mar. 31, 2017

Equity [Abstract]

Equity

Equity

In December 2015, our Board of Trustees authorized the redemption of some or all of our 6.4 million outstanding 7.750% Series A Preferred Shares. On January 19, 2016 and April 27, 2016, we used proceeds from dispositions to redeem 2.2 million shares and 3.6 million shares, respectively, of our 7.750% Series A Preferred Shares at a redemption price of $25.00 per share, plus accrued dividends up to the applicable dates of redemption. On July 6, 2016, we used proceeds from the repayment of a mezzanine loan to redeem the remaining 0.6 million outstanding shares of our 7.750% Series A Preferred Shares at a redemption price of $25.00 per share, plus accrued dividends up to the date of redemption. The 7.750% Series A Preferred Shares (NYSE: FPO-PA) were delisted from trading on the New York Stock Exchange upon redemption of the remaining 0.6 million outstanding shares on July 6, 2016.

On January 24, 2017, we declared a dividend of $0.10 per common share, equating to an annualized dividend of $0.40 per common share. The dividend was paid on February 15, 2017 to common shareholders of record as of February 8, 2017. We record dividends on non-vested share awards as a reduction of shareholders’ equity. Dividends paid on non-vested share awards that subsequently do not vest are recorded as compensation expense in the period in which they are forfeited or expire. For each dividend paid by us on our common shares and, when applicable, preferred shares, the Operating Partnership distributes an equivalent distribution on our common and preferred Operating Partnership units, respectively.

On April 25, 2017, we declared a dividend of $0.10 per common share, equating to an annualized dividend of $0.40 per common share. The dividend will be paid on May 15, 2017 to common shareholders of record as of May 8, 2017.

Our unsecured revolving credit facility and unsecured term loan, the 440 First Street, NW Construction Loan and the Northern Virginia Construction Loan contain certain restrictions that include, among other things, requirements to maintain specified coverage ratios and other financial covenants, which may limit our ability to make distributions to our common and preferred shareholders, except for distributions required to maintain our qualification as a REIT.

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):

	Total Equity			Redeemable noncontrolling interests
Balance at December 31, 2016	$	436,383		$	28,244
Net income	43,145			1,884
Changes in ownership, net	3,076			(2,382		)
Distributions to owners	(5,815		)	(255		)
Other comprehensive income, net	571			25
Balance at March 31, 2017	$	477,360		$	27,516

	First Potomac Realty Trust			Non-redeemable noncontrolling interests(1)			Total Equity			Redeemable noncontrolling interests
Balance at December 31, 2015	$	624,528		$	800		$	625,328		$	28,813
Net income (loss)	46			(14		)	32			(133		)
Changes in ownership, net	(53,145		)	—			(53,145		)	(1,644		)
Distributions to owners	(10,948		)	—			(10,948		)	(393		)
Other comprehensive loss, net	(826		)	—			(826		)	(36		)
Balance at March 31, 2016	$	559,655		$	786		$	560,441		$	26,607

⁽¹⁾  Our 97% owned consolidated joint venture sold Storey Park on July 25, 2016, at which time all assets and liabilities owned by the joint venture were either sold or settled at the time of disposition and the remaining proceeds from the sale were distributed to the joint venture partners in accordance with the terms of the joint venture agreement. See note 6, Dispositions, for more information.

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

	2017			2016
Beginning balance at January 1,	$	(844	)	$	(2,360	)
Net unrealized gain (loss) on derivative instruments	596			(862		)
Net (gain) loss attributable to noncontrolling interests	(25		)	36
Ending balance at March 31,	$	(273	)	$	(3,186	)

XML

Noncontrolling Interests

3 Months Ended

Mar. 31, 2017

Noncontrolling Interest [Abstract]

Noncontrolling Interests

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, 2017, 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 $26.2 million. At March 31, 2017 and December 31, 2016, we recorded adjustments of $3.7 million and $6.1 million, respectively, to present certain common Operating Partnership units at the greater of their carrying value or redemption value.

At March 31, 2017, 2,545,602 of the total common Operating Partnership units, or 4.2%, were not owned by us. During the three months ended March 31, 2017, no common Operating Partnership units were redeemed with available cash. During the three months ended March 31, 2016, 38,539 common Operating Partnership units were redeemed with available cash. No common Operating Partnership units were redeemed for common shares during the three months ended March 31, 2017 or 2016.

(b) Noncontrolling Interests in a 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 (income) loss attributable to noncontrolling interests” on our consolidated statements of operations.

On August 4, 2011, we formed a joint venture, in which we had a 97% interest, with an affiliate of Perseus Realty, LLC to acquire Storey Park in our Washington, D.C. reporting segment, which was placed into development in August 2013. Storey Park was sold July 25, 2016, at which time all assets and liabilities owned by the joint venture were either sold or settled at the time of disposition and the remaining proceeds from the sale were distributed to the joint venture partners in accordance with the terms of the joint venture agreement. See note 6, Dispositions, for more information.

XML

Share-Based Payments

3 Months Ended

Mar. 31, 2017

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Share-Based Payments

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.

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. During the first quarter of 2017, we granted a total of 160,349 non-vested time-based common shares to our officers and employees. The time-based awards will vest ratably on an annual basis over a three-year period from the grant date. In February 2017, we granted a total of 257,937 non-vested performance-based common shares to our officers. The number of shares that will be earned under the February 2017 performance-based awards will be determined at the end of 2019, based upon the achievement of specified market performance goals measured over the performance period from January 1, 2017 through December 31, 2019. Of the shares earned, 50% will vest on February 1, 2020 and the remaining earned shares will vest on February 1, 2021. Any shares that are not earned will be forfeited.

We recognized compensation expense associated with all of our non-vested common share awards of $0.8 million and $0.4 million during the three months ended March 31, 2017 and 2016. 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 distributions over earnings related to participating securities is shown as a reduction in total earnings attributable to common shareholders in our computation of EPS.

A summary of our non-vested common share awards at March 31, 2017 is as follows:

	Non-vested Common Shares		Weighted Average Grant Date Fair Value
Non-vested at December 31, 2016	711,374		$	9.85
Granted	418,286		8.54
Vested	(80,179	)	10.99
Expired	(1,630	)	12.38
Forfeited	(991	)	11.03
Non-vested at March 31, 2017	1,046,860		$	9.23

We value our non-vested time-based share awards at the grant date fair value, which is the market price of our common shares. For the non-vested performance-based common share awards granted in February 2017, we used a Monte Carlo Simulation (risk-neutral approach) to determine the number of shares that may be issued pursuant to the award as these awards were deemed to have a market condition. The risk-free interest rate assumptions used in the Monte Carlo Simulation were determined based on the zero coupon risk-free rate for the time frame of 0.25 years to 3 years, which ranged from 0.70% to 1.60%, respectively. The volatility used for our common share price in the Monte Carlo Simulation varied between 25.82% and 22.93%. Based on the Monte Carlo Simulation, the weighted average grant date fair value of the February 2017 non-vested performance-based common share awards was $7.11.

As of March 31, 2017, we had $7.6 million of unrecognized compensation cost related to non-vested common shares. We anticipate this cost will be recognized over a weighted-average period of 3.2 years.

XML

Segment Information

3 Months Ended

Mar. 31, 2016

Segment Reporting [Abstract]

Segment Information

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 rental property, 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 in their operating results other than the impact of straight-line revenue and the amortization of deferred market rents, deferred lease incentives and deferred tenant improvement reimbursements. 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, 2017 and 2016 are as follows (dollars in thousands):

	Three Months Ended March 31, 2017
	Washington, D.C.			Maryland(1)			Northern Virginia			Southern Virginia			Consolidated
Number of buildings	6			34			12			19			71
Square feet	917,643			1,886,177			1,168,990			2,023,858			5,996,668
Total revenues	$	11,722		$	11,235		$	7,312		$	7,554		$	37,823
Property operating expense	(3,139		)	(2,657		)	(1,956		)	(2,206		)	(9,958		)
Real estate taxes and insurance	(2,292		)	(982		)	(741		)	(646		)	(4,661		)
Total property operating income	$	6,291		$	7,596		$	4,615		$	4,702		23,204
Depreciation and amortization expense													(14,566		)
General and administrative													(4,497		)
Other income													40,888
Net income													$	45,029
Total assets (2)	$	443,800		$	322,738		$	260,564		$	159,487		$	1,203,997
Capital expenditures(3)	$	1,522		$	2,350		$	2,295		$	606		$	6,810
	Three Months Ended March 31, 2016
	Washington, D.C.			Maryland			Northern Virginia			Southern Virginia			Consolidated
Number of buildings	6			34			14			19			73
Square feet	918,566			1,885,630			1,715,730			2,023,858			6,543,784
Total revenues	$	11,290		$	11,587		$	12,307		$	7,513		$	42,697
Property operating expense	(2,968		)	(3,235		)	(3,320		)	(2,014		)	(11,537		)
Real estate taxes and insurance	(2,372		)	(929		)	(1,297		)	(618		)	(5,216		)
Total property operating income	$	5,950		$	7,423		$	7,690		$	4,881		25,944
Depreciation and amortization expense													(15,006		)
General and administrative													(4,578		)
Other expenses													(6,461		)
Net loss													$	(101	)
Total assets (2)	$	468,561		$	338,553		$	294,480		$	166,015		$	1,359,943
Capital expenditures(3)	$	4,910		$	959		$	15,757		$	897		$	22,643

⁽¹⁾  Redland I within our Maryland reporting segment was placed into redevelopment during March 2017.

⁽²⁾  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 note 5, Investment in Affiliates. Corporate assets not allocated to any of our reportable segments totaled $17.4 million and $92.3 million at March 31, 2017 and 2016, respectively.

⁽³⁾  Capital expenditures for corporate assets not allocated to any of our reportable segments were immaterial for the three months ended March 31, 2017 and $0.1 million for the three months ended March 31, 2016.

XML

Summary of Significant Accounting Policies (Policies)

3 Months Ended

Mar. 31, 2017

Accounting Policies [Abstract]

Principles of Consolidation

) Principles of Consolidation

Our unaudited condensed consolidated financial statements include our accounts and the accounts of our Operating Partnership, which we consider to be a variable interest entity (“VIE”), and the subsidiaries in which we or our 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, 2016 and as updated from time to time in our other filings with 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, 2017 and the results of our operations, our comprehensive income (loss) and our cash flows for the three months ended March 31, 2017 and 2016. 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

Use of Estimates

The preparation of unaudited 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 unaudited 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, 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

Rental Property

Rental property is initially recorded at fair value, when acquired in a business combination, or initial cost when constructed or acquired in an asset purchase. 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 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. 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 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 have made the decision to dispose of the building, our Board of Trustees or a designated delegate has approved the sale, there is a binding contract pursuant to which the buyer has significant money at risk, or 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. We will cease recording depreciation on a building once it has been classified as held-for-sale.

We will also determine whether the disposal of a building qualifies as a discontinued operation in accordance with GAAP by assessing whether the disposal of the building, or group of buildings, represents a strategic shift that has, or will have, a major effect on the Company’s operations or financial results. If the building does not qualify as a discontinued operation in accordance with GAAP, we will classify the building’s operating results, together with any impairment charges and any gains or losses on the sale of the building, in continuing operations for all periods presented in our consolidated statements of operations. We will classify the assets and liabilities related to the building as held-for-sale in our consolidated balance sheet for the period the held-for-sale criteria were met.

If the building does qualify as a discontinued operation under GAAP, we will classify the building’s operating results, together with any impairment charges and any gains or losses on the sale of the building, in discontinued operations in our consolidated statements of operations for all periods presented and classify the assets and liabilities related to the building as held-for-sale in our consolidated balance sheets for the periods presented. Interest expense is reclassified to discontinued operations only to the extent the disposed or 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.

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 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 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, 2017 and 2016. Capitalization of interest ends 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 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.

Application of New Accounting Standards

Application of New Accounting Standards

In January 2017, we adopted Accounting Standards Update No. 2014-15, Disclosure of Uncertainties about an Entity’s Ability to Continue as a Going Concern (“ASU 2014-15”), which requires an entity to evaluate whether conditions or events, in the aggregate, raise substantial doubt about the entity’s ability to continue as a going concern for one year from the date the financial statements are issued or are available to be issued. The adoption of ASU 2014-15 did not have a material impact on our unaudited condensed consolidated financial statements and related disclosures.

In January 2017, we adopted Accounting Standards Update No. 2016-09, Improvements to Employee Share-Based Payment Accounting (“ASU 2016-09”), which is intended to simplify several aspects of the accounting for employee share-based payment transactions, including income tax consequences, classification of awards as either equity or liabilities and classification on the statement of cash flows. ASU 2016-09 requires us to classify cash payments made on behalf of employees for taxes owed on the vesting of restricted common shares, for which we withhold vested common shares owed to the employee in an amount that equates to the value of the employee’s tax obligation, as a financing activity on our statements of cash flows. We elected to adopt ASU 2016-09 retrospectively and the adoption of ASU 2016-09 did not have a material impact on our unaudited condensed consolidated financial statements and related disclosures.

In January 2017, we adopted Accounting Standards Update No. 2016-17, Consolidation (Topic 810): Interests Held through Related Parties That Are under Common Control (“ASU 2016-17”), which requires a single decision maker or service provider, in evaluating whether it is the primary beneficiary, to consider on a proportionate basis indirect interests held through related parties under common control. The adoption of ASU 2016-17 did not have a material impact on our unaudited condensed consolidated financial statements and related disclosures.

In January 2017, we adopted Accounting Standards Update No. 2017-01, Business Combinations (Topic 805): Clarifying the Definition of a Business (“ASU 2017-01”), which was issued by the Financial Accounting Standards Board (“FASB”) in January 2017. ASU 2017-01 provides a new framework for determining whether transactions should be accounted for as acquisitions (or disposals) of assets or businesses. We anticipate ASU 2017-01 will change our accounting treatment of future property acquisitions; however, the adoption of ASU 2017-01 did not have a material impact on our unaudited condensed consolidated financial statements and related disclosures.

In May 2014, the FASB issued Accounting Standards Update No. 2014-09, Revenue from Contracts with Customers (“ASU 2014-09”), which requires an entity to recognize the amount of revenue to which it expects to be entitled for the transfer of promised goods or services to customers and will replace most existing revenue recognition guidance when it becomes effective. In July 2015, the FASB deferred by one year the mandatory effective date of ASU 2014-09 from January 1, 2017 to January 1, 2018. Early adoption is permitted, but not prior to the original effective date of January 1, 2017. ASU 2014-09 permits the use of either the retrospective or cumulative effect transition method. We have begun to evaluate each of the revenue streams under the new model and the pattern of recognition is not expected to change significantly. We have not yet selected a transition method and are evaluating the impact that ASU 2014-09 will have on our consolidated financial statements and related disclosures.

In January 2016, the FASB issued Accounting Standards Update No. 2016-01, Recognition and Measurement of Financial Assets and Financial Liabilities (“ASU 2016-01”), which requires, among other things, entities to use the exit price notion when measuring the fair value of financial instruments for disclosure purposes and eliminates the requirement for public business entities to disclose the method(s) and significant assumptions used to estimate the fair value disclosed for financial instruments measured at amortized cost on the balance sheet. ASU 2016-01 is effective for periods beginning after December 15, 2017; early adoption is not permitted. The guidance is not expected to have a material impact on our consolidated financial statements and related disclosures.

In February 2016, the FASB issued Accounting Standards Update No. 2016-02, Leases (“ASU 2016-02”), which requires a lessee to record on the balance sheet a right-of-use asset with a corresponding lease liability created by lease terms of more than 12 months. Additional qualitative and quantitative disclosures will also be required. The guidance will become effective for periods beginning after December 15, 2018 and will be applied using a modified retrospective transition method. We are currently evaluating the impact that ASU 2016-02 will have on our consolidated financial statements and related disclosures.

In August 2016, the FASB issued Accounting Standards Update No. 2016-15, Classification of Certain Cash Receipts and Cash Payments (“ASU 2016-15”). The guidance addresses eight classification issues related to the statement of cash flows, including debt prepayment or debt extinguishment costs and distributions received from equity-method investees. The guidance will become effective for periods beginning after December 15, 2017 and early adoption is permitted. ASU 2016-15 requires the use of a retrospective transition method to each period presented. If such retrospective transition is impracticable for certain issues, the adoption of ASU 2016-15 for the applicable issues may be applied prospectively as of the earliest date practicable. The guidance is not expected to have a material impact on our consolidated financial statements or related disclosures.

In November 2016, the FASB issued Accounting Standards Update No. 2016-18, Statement of Cash Flows (Topic 230): Restricted Cash (“ASU 2016-18”), which requires companies to include cash and cash equivalents that have restrictions on withdrawal or use in total cash and cash equivalents on the statement of cash flows. ASU 2016-18 is effective for periods beginning after December 15, 2017 and early adoption is permitted. The guidance is not expected to have a material impact on our consolidated financial statements and related disclosures.

In January 2017, the FASB issued Accounting Standards Update No. 2017-04, Intangibles - Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment (“ASU 2017-04”), which requires an entity to no longer perform a hypothetical purchase price allocation to measure goodwill impairment. Instead, impairment will be measured using the difference between the carrying amount and the fair value of the reporting unit. ASU 2017-04 is effective for periods beginning after December 15, 2019 and early adoption is permitted for measurement dates after January 1, 2017. The guidance is not expected to have a material impact on our consolidated financial statements and related disclosures.

In February 2017, the FASB issued Accounting Standards Update No. 2017-05, Other Income - Gains and Losses from the Derecognition of Nonfinancial Assets (Subtopic 610-20): Clarifying the Scope of Asset Derecognition Guidance and Accounting for Partial Sales of Nonfinancial Assets (“ASU 2017-05”), which clarifies the guidance in Subtopic 610-20 on accounting for derecognition of a nonfinancial asset. The update also defines in-substance nonfinancial assets and includes guidance on partial sales of nonfinancial assets. The amendments in ASU 2017-05 are to be applied at the same time that ASU 2014-09 is applied. We are currently evaluating the impact that ASU 2017-05 will have on our consolidated financial statements and related disclosures.

Reclassifications

(e) Reclassifications

Certain prior year amounts have been reclassified to conform to the current year presentation, primarily as a result of adopting ASU 2016-09 in January 2017. See note 2(d), Summary of Significant Accounting Policies - Application of New Accounting Standards for more information.

XML

Summary of Significant Accounting Policies (Tables)

3 Months Ended

Mar. 31, 2017

Accounting Policies [Abstract]

Estimated Useful Life of Assets

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 lease
Tenant improvements	Shorter of the useful life of the asset or the term of the related lease

XML

Earnings Per Common Share (Tables)

3 Months Ended

Mar. 31, 2017

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 (dollars in thousands, except per share amounts):

	Three Months Ended March 31,
	2017			2016
Numerator for basic and diluted earnings per common share:
Net income (loss)	$	45,029		$	(101	)
Less: Net (income) loss attributable to noncontrolling interests	(1,884		)	147
Net income attributable to First Potomac Realty Trust	43,145			46
Less: Dividends on preferred shares	—			(2,248		)
Less: Issuance costs of redeemed preferred shares (1)	—			(1,904		)
Net income (loss) attributable to common shareholders	43,145			(4,106		)
Less: Allocation to participating securities	(55		)	(73		)
Net income (loss) attributable to common shareholders	$	43,090		$	(4,179	)
Denominator for basic and diluted earnings per common share:
Weighted average common shares outstanding - basic	57,635			57,542
Weighted average common shares outstanding - diluted	57,907			57,542
Basic and diluted earnings per common share:
Net income (loss) attributable to common shareholders - basic	$	0.75		$	(0.07	)
Net income (loss) attributable to common shareholders - diluted	$	0.74		$	(0.07	)

⁽¹⁾  Represents the original issuance costs associated with the redemption of 2.2 million7.750% Series A Cumulative Redeemable Perpetual Preferred Shares (the “7.750% Series A Preferred Shares”) during the three months ended March 31, 2016.

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,
	2017	2016
Stock option awards	879	1,018
Non-vested share awards	595	484
	1,474	1,502

XML

Rental Property (Tables)

3 Months Ended

Mar. 31, 2017

Real Estate [Abstract]

Summary of Rental Property

Rental property consists of the following (dollars in thousands):

	March 31, 2017			December 31, 2016(1)
Land and land improvements	$	269,920		$	282,923
Buildings and improvements	766,394			824,867
Construction in progress	29,793			4,605
Tenant improvements	185,264			189,031
Furniture, fixtures and equipment	374			408
	1,251,745			1,301,834
Less: accumulated depreciation	(227,140		)	(242,562		)
	$	1,024,605		$	1,059,272

⁽¹⁾ Excludes rental property totaling $13.2 million at December 31, 2016 related to One Fair Oaks, which was classified as held-for-sale at December 31, 2016 and was sold on

XML

Investment in Affiliates (Tables)

3 Months Ended

Mar. 31, 2017

Equity Method Investments and Joint Ventures [Abstract]

mortgage debt of joint ventures [Table Text Block]

The following table provides a summary of the mortgage debt held by our unconsolidated joint ventures (dollars in thousands):

	FPO Ownership	Effective Interest Rate	Maturity Date	Principal Balance at March 31, 2017(1)		Principal Balance at December 31, 2016(1)
Rivers Park I and II (2)	25%	LIBOR + 1.90%(3)	September 2017	$	—	$	28,000
1750 H Street, NW(4)	50%	3.92%	August 2024	32,000		32,000
Prosperity Metro Plaza(5)	51%	3.91%	December 2029	50,000		50,000
Weighted Average / Total		3.91%		$	82,000	$	110,000

⁽¹⁾  Reflects the entire balance of the debt secured by the properties, not our portion of the debt.

⁽²⁾  The unconsolidated joint ventures that owned Rivers Park I and II sold these properties on March 7, 2017. The unconsolidated joint venture partners used net proceeds from the sale to repay the mortgage debt encumbering the properties. At December 31, 2016, $2.8 million of the outstanding mortgage balance was recourse to us.

⁽³⁾  At March 31, 2017, LIBOR was 0.98%. All references to LIBOR in the condensed consolidated financial statements refer to one-month LIBOR.

⁽⁴⁾  The loan requires interest-only payments with a constant interest rate over the life of the loan. The loan is repayable in full, without penalty, on or after August 1, 2021.

⁽⁵⁾  The loan requires interest-only payments through December 2024, at which time the loan requires principal and interest payments through its maturity date. The loan is repayable in full, without penalty, on or after June 1, 2029.

Schedule of Equity Method Investments [Line Items]

Components of Investments in Affiliates

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

	Reporting Segment	Ownership Interest	Investment at March 31, 2017		Investment at December 31, 2016
Prosperity Metro Plaza	Northern Virginia	51%	$	26,772	$	26,414
1750 H Street, NW	Washington, D.C.	50%	14,594		14,624
Aviation Business Park(1)	Maryland	50%	482		5,941
Rivers Park I and II(1)(2)	Maryland	25%	466		2,413
			$	42,314	$	49,392

⁽¹⁾ The unconsolidated joint ventures that owned Aviation Business Park and Rivers Park I and II sold these properties on March 7, 2017. Our investment in these joint ventures at March 31, 2017 is primarily comprised of our share of cash that has not yet been distributed.

⁽²⁾   Rivers Park I and Rivers Park II were owned through two separate unconsolidated joint ventures.

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, 2017		December 31, 2016
Assets:
Rental property, net	$	144,065	$	189,245
Cash and cash equivalents	11,122		9,887
Other assets	16,472		20,726
Total assets	171,659		219,858
Liabilities:
Mortgage loans, net(1)(2)	81,416		109,372
Other liabilities	6,503		8,674
Total liabilities	87,919		118,046
Net assets	$	83,740	$	101,812

⁽¹⁾  Of the total mortgage debt that encumbers our unconsolidated properties, none was recourse to us at March 31, 2017 and $2.8 million was recourse to us at December 31, 2016.

⁽²⁾  Mortgage loans, net at both March 31, 2017 and December 31, 2016 included $0.6 million of unamortized deferred financing costs

Results of Operations of Company's Unconsolidated Joint Ventures

The following table summarizes the results of operations of our unconsolidated joint ventures for the periods presented, of which, our proportionate share is reflected in “Equity in earnings of affiliates” in our consolidated statements of operations based on our varying ownership interests in the unconsolidated joint ventures (dollars in thousands):

	Three Months Ended March 31,
	2017			2016
Total revenues	$	5,679		$	6,290
Total operating expenses	(1,937		)	(2,166		)
Net operating income	3,742			4,124
Depreciation and amortization	(1,863		)	(1,966		)
Interest expense, net	(962		)	(993		)
Gain on sale of rental property	10,324			—
Net income	$	11,241		$	1,165

XML

Dispositions (Tables)

3 Months Ended

Mar. 31, 2017

Discontinued Operations and Disposal Groups [Abstract]

Discontinued Operations Square Feet Area [Table Text Block]

The following table is a summary of property dispositions whose operating results are included in continuing operations in our consolidated statements of operations for the periods presented (dollars in thousands):

Property	Reporting Segment	Disposition Date	Property Type	Square Feet	Net Sale Proceeds
Plaza 500	Northern Virginia	2/17/2017	Industrial	502,830	$	72,499
One Fair Oaks (1)	Northern Virginia	1/9/2017	Office	214,214	13,255
Storey Park(2)	Washington, D.C.	7/25/2016	Land	—	52,659
NOVA Non-Core Portfolio(3)	Northern Virginia	3/25/2016	Various	945,745	90,501

⁽¹⁾  One Fair Oaks was classified as held-for-sale at December 31, 2016, and the building was vacant at the time of sale.

⁽²⁾   This development site could have supported up to 712,000 rentable square feet.

⁽³⁾   Consists of Van Buren Office Park, Herndon Corporate Center, Windsor at Battlefield, Reston Business Campus, Enterprise Center, Gateway Centre Manassas, Linden Business Center and Prosperity Business Center (collectively, the “NOVA Non-Core Portfolio”).

Schedule of Disposal Groups Including Not Discontinued Operations, Income Statement, Balance Sheet and Additional Disclosures [Table Text Block]

The following table summarizes the aggregate results of operations for the disposed or held-for-sale properties that are included in continuing operations for the periods presented (dollars in thousands):

	Three Months Ended March 31,
	2017			2016
Revenues	$	804		$	7,043
Property operating expenses	(304		)	(2,823		)
Depreciation and amortization	(289		)	(1,343		)
Interest expense	—			(184		)
Loss on debt extinguishment	—			(48		)
Income from operations of disposed property	211			2,645
Gain (loss) on sale of rental property(1)	42,799			(1,155		)
Net income from continuing operations	$	43,010		$	1,490

XML

Debt (Tables)

3 Months Ended

Mar. 31, 2017

Debt Disclosure [Abstract]

Schedule of Borrowings

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

	March 31,   2017(1)		December 31, 2016(1)
Mortgage loans, net, effective interest rates ranging from 4.22% to 6.01%, maturing at various dates through September 2030(2)(3)	$	295,523	$	296,212
Unsecured term loan, net, effective interest rates ranging from LIBOR plus 1.45% to LIBOR plus 1.80%, with staggered maturity dates ranging from December 2020 to December 2022(2)	299,433		299,404
Unsecured revolving credit facility, net, effective interest rate of LIBOR plus 1.50%, maturing December 2019(2)	48,758		141,555
Total	$	643,714	$	737,171

⁽¹⁾  The balances include a total of $5.8 million and $6.2 million of unamortized deferred financing costs at March 31, 2017 and December 31, 2016, respectively.

⁽²⁾  At March 31, 2017, LIBOR was 0.98%.

⁽³⁾  The balances at March 31, 2017 and December 31, 2016 include two construction loans.

Summary of Company's Mortgage Debt

The following table provides a summary of our mortgage debt, which includes two construction loans (dollars in thousands):

Encumbered Property	Contractual Interest Rate		Effective Interest Rate			Maturity Date	March 31,   2017			December 31, 2016
440 First Street, NW Construction Loan(1)(2)	LIBOR + 2.50%		LIBOR + 2.50%			May 2017	$	32,216		$	32,216
Redland II and III	4.20	%	4.64	%		November 2017	62,873			63,214
Northern Virginia Construction Loan(3)	LIBOR + 1.85%		LIBOR + 1.85%			September 2019	34,584			34,584
840 First Street, NE	5.72	%	6.01	%		July 2020	35,023			35,201
Battlefield Corporate Center	4.26	%	4.40	%		November 2020	3,309			3,353
1211 Connecticut Avenue, NW	4.22	%	4.47	%		July 2022	28,347			28,503
1401 K Street, NW	4.80	%	4.93	%		June 2023	35,384			35,556
11 Dupont Circle, NW	4.05	%	4.22	%		September 2030	66,780			66,780
Principal balance			4.45	%	(4)		298,516			299,407
Unamortized deferred financing costs							(2,993		)	(3,195		)
Total balance, net							$	295,523		$	296,212

⁽¹⁾  At March 31, 2017, LIBOR was 0.98%.

⁽²⁾  This construction loan is collateralized by 440 First Street, NW. In May 2016, we extended the maturity date by one year to May 30, 2017. 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, 2017, per the terms of the loan agreement, 50% of the outstanding principal balance and all of the outstanding accrued interest were recourse to us.

⁽³⁾  This construction loan has a borrowing capacity of up to $43.7 million and is collateralized by the NOVA build-to-suit, which was placed in-service in the third quarter of 2016. We can repay all or a portion of the Northern Virginia Construction Loan, without penalty, at any time during the term of the loan.

⁽⁴⁾  Represents the 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 and the unsecured revolving credit facility at March 31, 2017 and December 31, 2016 (dollars in thousands):

	Maturity Date	Interest Rate(1)	March 31, 2017			December 31, 2016
Unsecured Term Loan
Tranche A	December 2020	LIBOR + 1.45%	$	100,000		$	100,000
Tranche B	June 2021	LIBOR + 1.45%	100,000			100,000
Tranche C	December 2022	LIBOR + 1.80%	100,000			100,000
Total			300,000			300,000
Unamortized deferred financing costs			(567		)	(596		)
Total, net			$	299,433		$	299,404
Unsecured Revolving Credit Facility
Outstanding borrowings	December 2019(2)	LIBOR + 1.50% (3)	$	51,000		$	144,000
Unamortized deferred financing costs			(2,242		)	(2,445		)
Total, net			$	48,758		$	141,555

⁽¹⁾  Reflects the interest rate spreads at March 31, 2017. At March 31, 2017, LIBOR was 0.98%. The interest rate spread is subject to change based on our maximum total indebtedness ratio. For more information, see note 7(d), Debt – Financial Covenants.

XML

Derivative Instruments (Tables)

3 Months Ended

Mar. 31, 2017

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Summary of Interest Rate Swap Agreements

Our interest rate swap agreements are summarized below (dollars in thousands):

Maturity Date	Notional Amount		Interest Rate Contractual Component	Fixed LIBOR Interest Rate
July 2017	$	30,000	LIBOR	2.093	%
July 2017	30,000		LIBOR	2.093	%
July 2017	25,000		LIBOR	1.129	%
July 2017	12,500		LIBOR	1.129	%
July 2017	50,000		LIBOR	0.955	%
July 2018	12,500		LIBOR	1.383	%
July 2018	30,000		LIBOR	1.660	%
July 2018	25,000		LIBOR	1.394	%
July 2018	25,000		LIBOR	1.135	%
Total/Weighted Average	$	240,000		1.442	%

XML

Fair Value Measurements (Tables)

3 Months Ended

Mar. 31, 2017

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, 2017 and December 31, 2016 (dollars in thousands):

	Balance at    March 31, 2017		Level 1		Level 2		Level 3
Recurring Measurements:
Derivative instrument-swap assets	$	68	$	—	$	68	$	—
Derivative instrument-swap liabilities	378		—		378		—
	Balance at    December 31, 2016		Level 1		Level 2		Level 3
Recurring Measurements:
Derivative instrument-swap liabilities	$	906	$	—	$	906	$	—

Fair Value of Debt Instruments

The carrying amount and estimated fair value of our debt instruments are as follows (dollars in thousands):

	March 31, 2017				December 31, 2016
	Carrying Value(1)		Fair Value		Carrying Value(1)		Fair Value
Financial Liabilities:
Mortgage debt	$	298,516	$	296,923	$	299,407	$	300,927
Unsecured term loan	300,000		300,000		300,000		300,000
Unsecured revolving credit facility	51,000		51,000		144,000		144,000
Total	$	649,516	$	647,923	$	743,407	$	744,927

⁽¹⁾  The debt balances exclude a combined total of $5.8 million and $6.2 million of unamortized deferred financing costs at March 31, 2017 and December 31, 2016, respectively.

XML

Equity (Tables)

3 Months Ended

Mar. 31, 2017

Equity [Abstract]

Company's Allocation between Non-controlling Interests

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

	Total Equity			Redeemable noncontrolling interests
Balance at December 31, 2016	$	436,383		$	28,244
Net income	43,145			1,884
Changes in ownership, net	3,076			(2,382		)
Distributions to owners	(5,815		)	(255		)
Other comprehensive income, net	571			25
Balance at March 31, 2017	$	477,360		$	27,516

	First Potomac Realty Trust			Non-redeemable noncontrolling interests(1)			Total Equity			Redeemable noncontrolling interests
Balance at December 31, 2015	$	624,528		$	800		$	625,328		$	28,813
Net income (loss)	46			(14		)	32			(133		)
Changes in ownership, net	(53,145		)	—			(53,145		)	(1,644		)
Distributions to owners	(10,948		)	—			(10,948		)	(393		)
Other comprehensive loss, net	(826		)	—			(826		)	(36		)
Balance at March 31, 2016	$	559,655		$	786		$	560,441		$	26,607

Company's Accumulated Other Comprehensive Loss

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

	2017			2016
Beginning balance at January 1,	$	(844	)	$	(2,360	)
Net unrealized gain (loss) on derivative instruments	596			(862		)
Net (gain) loss attributable to noncontrolling interests	(25		)	36
Ending balance at March 31,	$	(273	)	$	(3,186	)

XML

Share-Based Payments (Tables)

3 Months Ended

Mar. 31, 2017

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Schedule of Nonvested Share Activity

A summary of our non-vested common share awards at March 31, 2017 is as follows:

	Non-vested Common Shares		Weighted Average Grant Date Fair Value
Non-vested at December 31, 2016	711,374		$	9.85
Granted	418,286		8.54
Vested	(80,179	)	10.99
Expired	(1,630	)	12.38
Forfeited	(991	)	11.03
Non-vested at March 31, 2017	1,046,860		$	9.23

XML

Segment Information (Tables)

3 Months Ended

Mar. 31, 2016

Segment Reporting [Abstract]

Summary of Segment Information

The results of operations of our four reporting segments for the three months ended March 31, 2017 and 2016 are as follows (dollars in thousands):

	Three Months Ended March 31, 2017
	Washington, D.C.			Maryland(1)			Northern Virginia			Southern Virginia			Consolidated
Number of buildings	6			34			12			19			71
Square feet	917,643			1,886,177			1,168,990			2,023,858			5,996,668
Total revenues	$	11,722		$	11,235		$	7,312		$	7,554		$	37,823
Property operating expense	(3,139		)	(2,657		)	(1,956		)	(2,206		)	(9,958		)
Real estate taxes and insurance	(2,292		)	(982		)	(741		)	(646		)	(4,661		)
Total property operating income	$	6,291		$	7,596		$	4,615		$	4,702		23,204
Depreciation and amortization expense													(14,566		)
General and administrative													(4,497		)
Other income													40,888
Net income													$	45,029
Total assets (2)	$	443,800		$	322,738		$	260,564		$	159,487		$	1,203,997
Capital expenditures(3)	$	1,522		$	2,350		$	2,295		$	606		$	6,810
	Three Months Ended March 31, 2016
	Washington, D.C.			Maryland			Northern Virginia			Southern Virginia			Consolidated
Number of buildings	6			34			14			19			73
Square feet	918,566			1,885,630			1,715,730			2,023,858			6,543,784
Total revenues	$	11,290		$	11,587		$	12,307		$	7,513		$	42,697
Property operating expense	(2,968		)	(3,235		)	(3,320		)	(2,014		)	(11,537		)
Real estate taxes and insurance	(2,372		)	(929		)	(1,297		)	(618		)	(5,216		)
Total property operating income	$	5,950		$	7,423		$	7,690		$	4,881		25,944
Depreciation and amortization expense													(15,006		)
General and administrative													(4,578		)
Other expenses													(6,461		)
Net loss													$	(101	)
Total assets (2)	$	468,561		$	338,553		$	294,480		$	166,015		$	1,359,943
Capital expenditures(3)	$	4,910		$	959		$	15,757		$	897		$	22,643

⁽¹⁾  Redland I within our Maryland reporting segment was placed into redevelopment during March 2017.

⁽²⁾  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 note 5, Investment in Affiliates. Corporate assets not allocated to any of our reportable segments totaled $17.4 million and $92.3 million at March 31, 2017 and 2016, respectively.

⁽³⁾  Capital expenditures for corporate assets not allocated to any of our reportable segments were immaterial for the three months ended March 31, 2017 and $0.1 million for the three months ended March 31, 2016.

XML

Description of Business - Additional Information (Detail)	3 Months Ended
	Mar. 31, 2017 ft² joint_venture person Integer segment	Mar. 31, 2016 ft²
Real Estate Properties [Line Items]
Number of Reportable Segments | segment	4
Interest in Operating Partnership	95.80%
Area of Real Estate Property	5,996,668	6,543,784
Unconsolidated joint ventures | joint_venture	2
Square Footage Of Land For Additional Development	400,000
Occupancy rate in the Company's consolidated properties	92.40%
Number of tenants representing current occupancy rate | person	372
Percent of Annualized Cash Rent	20.90%
Wholly-owned Properties [Member]
Real Estate Properties [Line Items]
Number of Reportable Segments | Integer	4
Area of Real Estate Property	6,000,000
Unconsolidated Properties [Member]
Real Estate Properties [Line Items]
Area of Real Estate Property	400,000
Development and Redevelopment [Member]
Real Estate Properties [Line Items]
Area of Real Estate Property	100,000
US Government [Member]
Real Estate Properties [Line Items]
Percent of Annualized Cash Rent	14.00%
Washington D C Reporting Segment [Member]
Real Estate Properties [Line Items]
Area Of Land Available For Development In Additional Building Space	0

XML

Summary of Significant Accounting Policies - Estimated Useful Lives of Company's Assets, by Class (Detail)	3 Months Ended
	Mar. 31, 2017
Property, Plant and Equipment [Line Items]
Useful life	39 years
Lease related intangible assets	the term of the lease
Tenant improvements	Shorter of the useful life of the asset or the term of the related lease
Minimum [Member] | Building improvements
Property, Plant and Equipment [Line Items]
Useful life	5 years
Minimum [Member] | Furniture, fixtures and equipment
Property, Plant and Equipment [Line Items]
Useful life	5 years
Maximum [Member] | Building improvements
Property, Plant and Equipment [Line Items]
Useful life	20 years
Maximum [Member] | Furniture, fixtures and equipment
Property, Plant and Equipment [Line Items]
Useful life	15 years

XML

Summary of Significant Accounting Policies - Additional Information (Detail) - USD ($)	3 Months Ended	12 Months Ended
	Mar. 31, 2017	Dec. 31, 2016
Loans and Leases Receivable Disclosure [Line Items]
Allowance for credit losses for its notes receivable		$ 0
Nine Hundered And Fifty Street Nw [Member]
Loans and Leases Receivable Disclosure [Line Items]
Principal payments from note receivable	$ 34,000,000

XML

Earnings Per Common Share - Computation of Company's Basic and Diluted Earnings Per Share (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2017	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016
Numerator for basic and diluted earnings per common share:
Income from continuing operations	$ 45,029			$ (101)
Net income (loss)	45,029			(101)
Less: Net (income) loss attributable to noncontrolling interests	(1,884)			147
Net income attributable to First Potomac Realty Trust	43,145			46
Less: Dividends on preferred shares	0			(2,248)
Less: Issuance costs of redeemed preferred shares	0			1,904	[1]
Net income (loss) attributable to common shareholders	43,145			(4,106)
Less: Allocation to participating securities	(55)			(73)
Net income (loss) attributable to common shareholders	$ 43,090			$ (4,179)
Denominator for basic and diluted earnings per common share:
Basic	57,635			57,542
Weighted Average Number of Shares Outstanding, Diluted	57,907			57,542
Basic and diluted earnings per common share:
Loss from continuing operations	$ 0.75			$ (0.07)
Net income (loss) attributable to common shareholders - dilutive	$ 0.74
Preferred Stock, Dividend Rate, Percentage				7.75%
Series A Preferred Stock [Member]
Class of Stock [Line Items]
Stock Redeemed or Called During Period, Shares	2,200	600	3,600	2,200

[1] Represents the original issuance costs associated with the redemption of 2.2 million 7.750% Series A Cumulative Redeemable Perpetual Preferred Shares (the “7.750% Series A Preferred Shares”) during the three months ended March 31, 2016.

XML

Earnings Per Common Share - Anti-Dilutive Shares Not Included in Calculation of Diluted Earnings Per Share (Detail) - shares shares in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti-dilutive securities excluded from computation of earnings per share, Amount	1,474	1,502
Stock option awards
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti-dilutive securities excluded from computation of earnings per share, Amount	879	1,018
Non-vested share awards
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti-dilutive securities excluded from computation of earnings per share, Amount	595	484

XML

Rental Property - Summary of Rental Property (Detail) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2017	Dec. 31, 2016
Property, Plant and Equipment [Line Items]
Rental property, net		$ 1,024,605	$ 1,059,272
Rental Property [Member]
Property, Plant and Equipment [Line Items]
Land and land improvements		269,920	282,923
Buildings and improvements		766,394	824,867
Construction in process		29,793	4,605
Tenant Improvements		185,264	189,031
Furniture, fixtures and equipment		374	408
Rental property, gross		1,251,745	1,301,834
Less: accumulated depreciation		(227,140)	(242,562)
Real Estate Investment Property, Net		$ 1,024,605	$ 1,059,272
One Fair Oaks [Member]
Property, Plant and Equipment [Line Items]
Disposition Date Of Property	[1]	Jan. 09, 2017
One Fair Oaks [Member] | Disposal Group, Held-for-sale, Not Discontinued Operations [Member]
Property, Plant and Equipment [Line Items]
Rental property, net		$ 13,200
NOVA Non-Core Portfolio [Member]
Property, Plant and Equipment [Line Items]
Disposition Date Of Property	[2]	Mar. 25, 2016

[1] (1) One Fair Oaks was classified as held-for-sale at December 31, 2016, and the building was vacant at the time of sale.

[2] Consists of Van Buren Office Park, Herndon Corporate Center, Windsor at Battlefield, Reston Business Campus, Enterprise Center, Gateway Centre Manassas, Linden Business Center and Prosperity Business Center (collectively, the “NOVA Non-Core Portfolio”).

XML

Rental Property - Additional Information (Detail) $ in Thousands			3 Months Ended
		Jul. 25, 2016	Mar. 31, 2017 USD ($) ft²		Dec. 31, 2016 USD ($) ft²		Mar. 31, 2016 ft²
Segment Reporting Information [Line Items]
Square Footage Of Land For Additional Development			400,000
Area of Real Estate Property			5,996,668				6,543,784
Placed in-service redevelopment efforts			0
One Fair Oaks [Member]
Segment Reporting Information [Line Items]
Proceeds from sale of properties | $	[1]		$ 13,255
Area of Real Estate Property	[1]		214,214,000
Disposition Date Of Property	[1]		Jan. 09, 2017
Storey Park [Member]
Segment Reporting Information [Line Items]
Proceeds from sale of properties | $	[2]		$ 52,659
Area of Real Estate Property			0		712,000	[2]
Disposition Date Of Property		Jul. 25, 2016	Jul. 25, 2016	[2]
Ownership Interest			97.00%
Five Hundred Forty Gaither Road Redland First [Member]
Segment Reporting Information [Line Items]
Area of Real Estate Property			133,895
Projected incremental investment in development project | $			$ 23,600
Original cost basis of the property | $			$ 23,000
Washington D C Reporting Segment [Member]
Segment Reporting Information [Line Items]
Area Of Land Available For Development In Additional Building Space			0
Maryland Reporting Segment [Member]
Segment Reporting Information [Line Items]
Area Of Land Available For Development In Additional Building Space			100,000
Northern Virginia
Segment Reporting Information [Line Items]
Area Of Land Available For Development In Additional Building Space			200,000
Southern Virginia [Member]
Segment Reporting Information [Line Items]
Area Of Land Available For Development In Additional Building Space			100,000
Rental Property [Member]
Segment Reporting Information [Line Items]
Original cost basis of the property | $			$ 766,394		$ 824,867

[1] (1) One Fair Oaks was classified as held-for-sale at December 31, 2016, and the building was vacant at the time of sale.

[2] ) This development site could have supported up to 712,000 rentable square feet.

XML

Notes Receivable - Additional Information (Detail) $ in Thousands	3 Months Ended
	Mar. 31, 2017 USD ($) ft² shares	Dec. 31, 2016 USD ($) shares	Jul. 06, 2016 shares	Mar. 31, 2016 ft²	Dec. 31, 2015 shares
Receivables with Imputed Interest [Line Items]
Area of Real Estate Property | ft²	5,996,668			6,543,784
Unsecured revolving credit facility, net | $	$ 48,758	$ 141,555
Series A Preferred Shares, shares outstanding | shares	600,000	6,400,000
America Square [Member]
Receivables with Imputed Interest [Line Items]
Maturity date of loan	Apr. 01, 2017
Nine Hundered And Fifty Street Nw [Member]
Receivables with Imputed Interest [Line Items]
Area of Real Estate Property | ft²	287,000
Recognition of Deferred Revenue | $		$ 200
Nine Hundered And Fifty Street Nw [Member] | Minimum [Member]
Receivables with Imputed Interest [Line Items]
Fixed interest rate on loan	9.75%
Series A Preferred Stock [Member]
Receivables with Imputed Interest [Line Items]
Series A Preferred Shares, shares outstanding | shares			600,000		6,400,000

XML

Investment in Affiliates - Components of Investments in Affiliates (Detail) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016
Schedule of Equity Method Investments [Line Items]
Company Investment		$ 42,314	$ 49,392
Prosperity Metro Plaza [Member]
Schedule of Equity Method Investments [Line Items]
Reporting Segment		Northern Virginia
Ownership Interest	[1]	51.00%
Company Investment		$ 26,772	26,414
One Thousand Seven Hundred Fifty H Street Nw [Member]
Schedule of Equity Method Investments [Line Items]
Reporting Segment		Washington, D.C.
Ownership Interest	[2]	50.00%
Company Investment		$ 14,594	14,624
Aviation Business Park [Member]
Schedule of Equity Method Investments [Line Items]
Reporting Segment		Maryland
Ownership Interest		50.00%
Company Investment		$ 482	5,941
Rivers Park One And Two [Member]
Schedule of Equity Method Investments [Line Items]
Reporting Segment		Maryland
Ownership Interest		25.00%
Company Investment		$ 466	$ 2,413
Mortgages [Member] | Rivers Park One And Two [Member]
Schedule of Equity Method Investments [Line Items]
Guarantor Obligations, Maximum Exposure, Undiscounted				$ 2,800

[1] The loan requires interest-only payments through December 2024, at which time the loan requires principal and interest payments through its maturity date. The loan is repayable in full, without penalty, on or after June 1, 2029.

[2] The loan requires interest-only payments with a constant interest rate over the life of the loan. The loan is repayable in full, without penalty, on or after August 1, 2021.

XML

Investment in Affiliates - Net Assets of Company's Unconsolidated Joint Ventures (Detail) - USD ($) $ in Thousands		Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Mar. 31, 2016	Dec. 31, 2015
Assets:
Rental property, net		$ 1,024,605	$ 1,059,272
Cash and cash equivalents		13,269	14,144		$ 15,149	$ 13,527
Total assets		1,203,997	1,260,247		$ 1,359,943
Liabilities:
Total liabilities		699,121	795,620
Recourse mortgage debt		643,714	737,171
Unconsolidated Joint Ventures [Member]
Assets:
Rental property, net		144,065	189,245
Cash and cash equivalents		11,122	9,887
Other assets		16,472	20,726
Total assets		171,659	219,858
Liabilities:
Mortgage loans	[1],[2]	81,416	109,372
Other liabilities		6,503	8,674
Total liabilities		87,919	118,046
Net assets		83,740	101,812
Debt Issuance Costs, Line of Credit Arrangements, Net			600
Unconsolidated Entities
Liabilities:
Recourse mortgage debt		0
Mortgages [Member]
Liabilities:
Recourse mortgage debt	[3]	$ 82,000	$ 110,000
Mortgages [Member] | Rivers Park One And Two [Member]
Liabilities:
Guarantor Obligations, Maximum Exposure, Undiscounted				$ 2,800

[1] (2) Mortgage loans, net at both March 31, 2017 and December 31, 2016 included $0.6 million of unamortized deferred financing costs

[2] Of the total mortgage debt that encumbers our unconsolidated properties, none was recourse to us at March 31, 2017 and $2.8 million was recourse to us at December 31, 2016.

[3] Reflects the entire balance of the debt secured by the properties, not our portion of the debt.

XML

Investment in Affiliates - Additional Information (Detail) $ in Millions	3 Months Ended
	Mar. 31, 2017 USD ($) ft²	Mar. 31, 2016 USD ($) ft²
Schedule of Equity Method Investments [Line Items]
Fees from joint ventures	$ 0.1	$ 0.2
Area of Real Estate Property | ft²	5,996,668	6,543,784
Rivers Park One And Two [Member]
Schedule of Equity Method Investments [Line Items]
Disposition Date Of Property	Mar. 07, 2017
Area of Real Estate Property | ft²	307,984
Proceeds from sale of properties	$ 18.4
Mortgage loans, net, effective interest rates ranging from 4.22% to 6.01%, maturing at various dates through September 2030(2)(3)	7.0
Proceeds From Sale Of Properties Gross	$ 19.0
Aviation Business Park [Member]
Schedule of Equity Method Investments [Line Items]
Area of Real Estate Property | ft²	120,284

XML

Investment in Affiliates - Results of Operations of Company's Unconsolidated Joint Ventures (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Schedule of Equity Method Investments [Line Items]
Total revenues	$ 37,823	$ 42,697
Total operating expenses	(33,682)	(36,337)
Operating income	4,141	6,360
Depreciation and amortization	(14,566)	(15,006)
Interest expense, net		(6,461)
(Gain) loss on sale of rental property	42,799	(1,155)
Net income	4,223	555
Unconsolidated Joint Ventures [Member]
Schedule of Equity Method Investments [Line Items]
Total revenues	5,679	6,290
Total operating expenses	(1,937)	(2,166)
Operating income	3,742	4,124
Depreciation and amortization	(1,863)	(1,966)
Interest expense, net	(962)	(993)
(Gain) loss on sale of rental property	10,324	0
Net income	11,241	1,165
Five Hundred Forty Gaither Road Redland First [Member]
Schedule of Equity Method Investments [Line Items]
Investment Building and Building Improvements	23,000
Aviation Business Park [Member] | Rivers Park One And Two [Member]
Schedule of Equity Method Investments [Line Items]
Total revenues	1,113	1,631
Total operating expenses	(275)	(641)
Operating income	838	990
Depreciation and amortization	(420)	(643)
Interest expense, net	(146)	(175)
Income (Loss) before Gain (Loss) on Sale of Properties	272	172
(Gain) loss on sale of rental property	10,324	0
Net income	$ 10,596	$ 172

XML

Investment in Affiliates Investment in Affiliates - Mortgage Debt Held by Unconsolidated Joint Ventures (Details) (Details) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016
Schedule of Equity Method Investments [Line Items]
Total long term debt		$ 643,714	$ 737,171
Unconsolidated Joint Ventures [Member]
Schedule of Equity Method Investments [Line Items]
Debt Issuance Costs, Line of Credit Arrangements, Net			600
Rivers Park One And Two [Member]
Schedule of Equity Method Investments [Line Items]
Ownership Interest		25.00%
One Thousand Seven Hundred Fifty H Street Nw [Member]
Schedule of Equity Method Investments [Line Items]
Ownership Interest	[1]	50.00%
Prosperity Metro Plaza [Member]
Schedule of Equity Method Investments [Line Items]
Ownership Interest	[2]	51.00%
Mortgages [Member]
Schedule of Equity Method Investments [Line Items]
Total long term debt	[3]	$ 82,000	110,000
Effective Interest Rate		3.91%
Mortgages [Member] | Rivers Park One And Two [Member]
Schedule of Equity Method Investments [Line Items]
Guarantor Obligations, Maximum Exposure, Undiscounted				$ 2,800
Mortgage and Other Indebtedness	[3]	$ 0	28,000
Mortgages [Member] | One Thousand Seven Hundred Fifty H Street Nw [Member]
Schedule of Equity Method Investments [Line Items]
Mortgage and Other Indebtedness	[1],[3]	$ 32,000	32,000
Effective Interest Rate	[1]	3.92%
Mortgages [Member] | Prosperity Metro Plaza [Member]
Schedule of Equity Method Investments [Line Items]
Mortgage and Other Indebtedness	[2],[3]	$ 50,000	$ 50,000
Effective Interest Rate	[2]	3.91%
London Interbank Offered Rate (LIBOR) [Member]
Schedule of Equity Method Investments [Line Items]
Effective Interest Rate		0.98%
London Interbank Offered Rate (LIBOR) [Member] | Mortgages [Member] | Rivers Park One And Two [Member]
Schedule of Equity Method Investments [Line Items]
Interest Rate	[4]	LIBOR
Derivative, Basis Spread on Variable Rate		1.90%

[1] The loan requires interest-only payments with a constant interest rate over the life of the loan. The loan is repayable in full, without penalty, on or after August 1, 2021.

[2] The loan requires interest-only payments through December 2024, at which time the loan requires principal and interest payments through its maturity date. The loan is repayable in full, without penalty, on or after June 1, 2029.

[3] Reflects the entire balance of the debt secured by the properties, not our portion of the debt.

[4] At March 31, 2017, LIBOR was 0.98%. All references to LIBOR in the condensed consolidated financial statements refer to one-month LIBOR.

XML

Dispositions - Additional Information (Detail) - USD ($) $ in Thousands			3 Months Ended
		Jul. 25, 2016	Mar. 31, 2017		Mar. 31, 2016	Dec. 31, 2016
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
(Gain) loss on sale of rental property			$ 42,799		$ (1,155)
Assets			$ 1,203,997		$ 1,359,943	$ 1,260,247
FairOaks [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Disposition Date Of Property			Jan. 09, 2017
Buildings and improvements						17,600
Land and land improvements						1,600
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment						$ 6,000
NOVA Non-Core Portfolio [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Disposition Date Of Property	[1]		Mar. 25, 2016
Proceeds from sale of properties	[1]		$ 90,501
Storey Park [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Disposition Date Of Property		Jul. 25, 2016	Jul. 25, 2016	[2]
Proceeds from sale of properties	[2]		$ 52,659
Plaza Five Hundred [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Disposition Date Of Property			Feb. 17, 2017
Proceeds from sale of properties			$ 72,499
(Gain) loss on sale of rental property			$ 42,700

[1] Consists of Van Buren Office Park, Herndon Corporate Center, Windsor at Battlefield, Reston Business Campus, Enterprise Center, Gateway Centre Manassas, Linden Business Center and Prosperity Business Center (collectively, the “NOVA Non-Core Portfolio”).

[2] ) This development site could have supported up to 712,000 rentable square feet.

XML

Dispositions Dispositions - Disposed or Held-for-Sale Properties within Continuing Operations (Details) $ in Thousands			3 Months Ended
		Jul. 25, 2016	Mar. 31, 2017 USD ($) ft²		Mar. 31, 2016 USD ($) ft²	Dec. 31, 2016 ft²
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Area of Real Estate Property | ft²			5,996,668		6,543,784
Gain (Loss) on Extinguishment of Debt			$ 0		$ (48)
(Gain) loss on sale of rental property			$ 42,799		(1,155)
Storey Park [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Reporting Segment	[1]		Washington, D.C.
Disposition Date Of Property		Jul. 25, 2016	Jul. 25, 2016	[1]
Property Type	[1]		Land
Area of Real Estate Property | ft²			0			712,000	[1]
Proceeds from sale of properties	[1]		$ 52,659
NOVA Non-Core Portfolio [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Reporting Segment	[2]		Northern Virginia
Disposition Date Of Property	[2]		Mar. 25, 2016
Property Type	[2]		Various
Area of Real Estate Property | ft²	[2]					945,745
Proceeds from sale of properties	[2]		$ 90,501
Plaza Five Hundred [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Reporting Segment	[1]		Northern Virginia
Disposition Date Of Property			Feb. 17, 2017
Property Type			Industrial
Area of Real Estate Property | ft²			502,830,000
Proceeds from sale of properties			$ 72,499
(Gain) loss on sale of rental property			$ 42,700
One Fair Oaks [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Reporting Segment	[1]		Northern Virginia
Disposition Date Of Property	[3]		Jan. 09, 2017
Property Type	[3]		Office
Area of Real Estate Property | ft²	[3]		214,214,000
Proceeds from sale of properties	[3]		$ 13,255
(Gain) loss on sale of rental property			100
Disposed or held-for-sale properties in continuing operations | Continuing Operations
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Revenues			804		7,043
Property operating expenses			(304)		(2,823)
Depreciation and amortization			(289)		(1,343)
Interest Expense			0		(184)
Gain (Loss) on Extinguishment of Debt			0		(48)
Operating Income (Loss) from Continuing Operations Attributable to Parent			211		2,645
(Gain) loss on sale of rental property			42,799		(1,155)
Net income from continuing operations			43,010		$ 1,490
Disposed or held-for-sale properties in continuing operations | NOVA Non-Core Portfolio [Member] | Continuing Operations
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Impairment of rental property			$ 1,200

[1] ) This development site could have supported up to 712,000 rentable square feet.

[2] Consists of Van Buren Office Park, Herndon Corporate Center, Windsor at Battlefield, Reston Business Campus, Enterprise Center, Gateway Centre Manassas, Linden Business Center and Prosperity Business Center (collectively, the “NOVA Non-Core Portfolio”).

[3] (1) One Fair Oaks was classified as held-for-sale at December 31, 2016, and the building was vacant at the time of sale.

XML

Dispositions - Summary of Completed Property Dispositions (Detail) - ft²	Mar. 31, 2017	Mar. 31, 2016
Schedule Of Discontinued Operations [Line Items]
Area of Real Estate Property	5,996,668	6,543,784

XML

Debt - Schedule of Borrowings (Detail) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2017	Mar. 31, 2016	Dec. 31, 2016
Debt Instrument [Line Items]
Repayments of debt		$ 97,891	$ 93,119
Debt Issuance Costs, Net		5,800		$ 6,200
Mortgage loans, net		295,523		296,212
Unsecured Debt		299,433		299,404
Unsecured revolving credit facility, net		48,758		141,555
Total long term debt		$ 643,714		737,171
Mortgage Loan [Member]
Debt Instrument [Line Items]
Debt instrument maturity date		September 2030
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
Debt Instrument [Line Items]
Unsecured Debt		$ 299,433		299,404
Debt instrument maturity date		December 2020 to December 2022
Debt Instrument Basis Spread On Variable Rate Minimum		1.45%
Debt Instrument Basis Spread On Variable Rate Maximum		1.80%
Unsecured revolving credit facility
Debt Instrument [Line Items]
Repayments of debt		$ 97,000
Unsecured revolving credit facility, net, effective interest rate of LIBOR plus 1.50%, maturing December 2019(2)		$ 51,000		$ 144,000
Effective interest rate on the notes	[1]	1.50%
Debt instrument maturity date	[2]	December 2019
Minimum [Member] | Mortgage Loan [Member]
Debt Instrument [Line Items]
Effective interest rate on the notes		4.22%
Maximum [Member] | Mortgage Loan [Member]
Debt Instrument [Line Items]
Effective interest rate on the notes		6.01%
NOVA Non-Core Portfolio [Member]
Debt Instrument [Line Items]
Disposition Date Of Property	[3]	Mar. 25, 2016

[1] (3) This construction loan has a borrowing capacity of up to $43.7 million and is collateralized by the NOVA build-to-suit, which was placed in-service in the third quarter of 2016. We can repay all or a portion of the Northern Virginia Construction Loan, without penalty, at any time during the term of the loan.

[2] This construction loan is collateralized by 440 First Street, NW. In May 2016, we extended the maturity date by one year to May 30, 2017. 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, 2017, per the terms of the loan agreement, 50% of the outstanding principal balance and all of the outstanding accrued interest were recourse to us.

[3] Consists of Van Buren Office Park, Herndon Corporate Center, Windsor at Battlefield, Reston Business Campus, Enterprise Center, Gateway Centre Manassas, Linden Business Center and Prosperity Business Center (collectively, the “NOVA Non-Core Portfolio”).

XML

Debt - Summary of Company's Mortgage Debt (Detail) - USD ($) $ in Thousands			3 Months Ended
		Jul. 25, 2016	Mar. 31, 2017		Sep. 30, 2016	Mar. 31, 2016	Dec. 31, 2016
Debt Instrument [Line Items]
Line of Credit Facility, Interest Rate During Period					2.30%	1.90%
Line of Credit Facility, Increase (Decrease), Net			$ 4,000
Repayments of debt			$ 97,891			$ 93,119
Debt, Weighted Average Interest Rate	[1]		4.45%
LIBOR plus interest rate			1.50%
440 First Street, NW Construction Loan
Debt Instrument [Line Items]
Contractual Interest Rate			2.50%
Contractual Interest Rate	[2]		LIBOR + 2.50%
Maturity Date			May 30, 2017
Percentage Of Principal Loan Amount And Unpaid Accrued Interest Recourse			50.00%
Total Mortgage Debt	[3]		$ 32,216				$ 32,216
Storey Park [Member]
Debt Instrument [Line Items]
Contractual Interest Rate			2.50%
Redland Corporate Center Buildings II & III
Debt Instrument [Line Items]
Contractual Interest Rate			0.00%
Effective Interest Rate			0.00%
Maturity Date			November 2017
Total Mortgage Debt			$ 62,873				63,214
Effective Interest Rate			0.00%
840 First Street, NE
Debt Instrument [Line Items]
Contractual Interest Rate			0.00%
Effective Interest Rate			0.00%
Maturity Date			July 2020
Total Mortgage Debt			$ 35,023				35,201
Effective Interest Rate			0.00%
Battlefield Corporate Center
Debt Instrument [Line Items]
Contractual Interest Rate			0.00%
Effective Interest Rate			0.00%
Maturity Date			November 2020
Total Mortgage Debt			$ 3,309				3,353
Effective Interest Rate			0.00%
One thousand two hundred eleven Connecticut Avenue NW. [Member]
Debt Instrument [Line Items]
Contractual Interest Rate			0.00%
Effective Interest Rate			0.00%
Maturity Date			July 2022
Total Mortgage Debt			$ 28,347				28,503
Effective Interest Rate			0.00%
1401 K Street, NW
Debt Instrument [Line Items]
Contractual Interest Rate			0.00%
Effective Interest Rate			0.00%
Maturity Date			June 1, 2023
Total Mortgage Debt			$ 35,384				35,556
Effective Interest Rate			0.00%
Eleven Dupont Circle [Member]
Debt Instrument [Line Items]
Contractual Interest Rate			0.00%
Effective Interest Rate			0.00%
Maturity Date			September 2030
Total Mortgage Debt			$ 66,780				66,780
Effective Interest Rate			0.00%
Northern Virginia Development Project [Member]
Debt Instrument [Line Items]
Contractual Interest Rate			1.85%
Contractual Interest Rate	[2]		LIBOR + 1.85%
Maturity Date			September 2019
Total Mortgage Debt	[4]		$ 34,584				34,584
Northern Virginia Development Project [Member]
Debt Instrument [Line Items]
Borrowing capacity of a construction loan							43,700
Storey Park [Member]
Debt Instrument [Line Items]
Ownership Interest			97.00%
Disposition Date Of Property		Jul. 25, 2016	Jul. 25, 2016	[5]
Continuing Operations
Debt Instrument [Line Items]
Total Mortgage Debt			$ 298,516				299,407
Unamortized fair value adjustments			(2,993)				(3,195)
Carrying amount of mortgages			$ 295,523				$ 296,212
Mortgages [Member]
Debt Instrument [Line Items]
Effective Interest Rate			3.91%
Effective Interest Rate			3.91%

[1] Represents the weighted average interest rate

[2] At March 31, 2017, LIBOR was 0.98%.

[3] This construction loan is collateralized by 440 First Street, NW. In May 2016, we extended the maturity date by one year to May 30, 2017. 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, 2017, per the terms of the loan agreement, 50% of the outstanding principal balance and all of the outstanding accrued interest were recourse to us.

[4] (3) This construction loan has a borrowing capacity of up to $43.7 million and is collateralized by the NOVA build-to-suit, which was placed in-service in the third quarter of 2016. We can repay all or a portion of the Northern Virginia Construction Loan, without penalty, at any time during the term of the loan.

[5] ) This development site could have supported up to 712,000 rentable square feet.

XML

Debt - Additional Information (Detail) $ in Thousands			3 Months Ended
		Jul. 25, 2016	Mar. 31, 2017 USD ($) Tranches Rate shares		Sep. 30, 2016	Mar. 31, 2016 USD ($)	Apr. 27, 2017 USD ($)	Mar. 31, 2017 Interest_Rate_Swaps	Mar. 31, 2017 USD ($)	Mar. 31, 2017	Mar. 31, 2017 Integer	Mar. 31, 2017 Rate	Dec. 31, 2016 USD ($) shares	Jul. 06, 2016 shares	Dec. 31, 2015 shares
Debt Instrument [Line Items]
Basis spread over variable rate | Rate			1.50%
Recourse mortgage debt									$ 643,714				$ 737,171
Repayments of debt			$ 97,891			$ 93,119
Line of Credit Facility, Interest Rate During Period					2.30%	1.90%
Maximum outstanding borrowings			$ 144,000			$ 193,000
Annual commitment fee			0.15%
Number of interest rate swap agreements								9			9
Fixed effective interest rate										1.40%
Line of Credit Facility, Increase (Decrease), Net			$ 4,000
Series A Preferred Shares, shares outstanding | shares			600,000										6,400,000
Unsecured Debt									299,433				$ 299,404
Unsecured Debt [Member]
Debt Instrument [Line Items]
Outstanding balance of three tranches									300,000				300,000
Unsecured term loan
Debt Instrument [Line Items]
Number of tranches | Tranches			3
Unsecured Debt									300,000
Unsecured revolving credit facility
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage										2.50%
Unsecured revolving credit facility, net, effective interest rate of LIBOR plus 1.50%, maturing December 2019(2)									51,000				144,000
Repayments of debt			$ 97,000
Tranche A
Debt Instrument [Line Items]
Basis spread over variable rate			1.45%
Debt Instrument, Interest Rate, Increase (Decrease)			0.00%
Tranche A | Unsecured Debt [Member]
Debt Instrument [Line Items]
Outstanding balance of three tranches									100,000				100,000
Northern Virginia Development Project [Member]
Debt Instrument [Line Items]
Mortgage loans, net, effective interest rates ranging from 4.22% to 6.01%, maturing at various dates through September 2030(2)(3)	[1]								34,584				34,584
Debt Instrument, Interest Rate, Stated Percentage										1.85%
440 First Street, NW Construction Loan
Debt Instrument [Line Items]
Mortgage loans, net, effective interest rates ranging from 4.22% to 6.01%, maturing at various dates through September 2030(2)(3)	[2]								32,216				32,216
Debt Instrument, Interest Rate, Stated Percentage										2.50%
Percentage of outstanding principal										50.00%
Tranche C
Debt Instrument [Line Items]
Basis spread over variable rate			1.80%
Debt Instrument, Interest Rate, Increase (Decrease)			0.00%
Tranche C | Unsecured Debt [Member]
Debt Instrument [Line Items]
Outstanding balance of three tranches									100,000				100,000
Interest Rate Swap
Debt Instrument [Line Items]
Fixed effective interest rate										1.44%		0.00%
Amount on variable rate debt									$ 240,000
Unused lines of credit
Debt Instrument [Line Items]
Weighted average borrowings outstanding on unsecured revolving credit facility			$ 96,600			$ 169,500
NOVA Non-Core Portfolio
Debt Instrument [Line Items]
Disposition Date Of Property	[3]		Mar. 25, 2016
Proceeds from sale of properties	[3]		$ 90,501
Northern Virginia Development Project [Member]
Debt Instrument [Line Items]
Borrowing capacity of a construction loan													$ 43,700
Nine Hundered And Fifty Street Nw [Member]
Debt Instrument [Line Items]
Principal payments from note receivable			$ 34,000
Storey Park [Member]
Debt Instrument [Line Items]
Disposition Date Of Property		Jul. 25, 2016	Jul. 25, 2016	[4]
Proceeds from sale of properties	[4]		$ 52,659
Subsequent Event [Member]
Debt Instrument [Line Items]
Available capacity on the unsecured revolving credit facility							$ 172,000
Subsequent Event [Member] | Unsecured revolving credit facility
Debt Instrument [Line Items]
Unsecured revolving credit facility, net, effective interest rate of LIBOR plus 1.50%, maturing December 2019(2)							$ 51,000
Series A Preferred Stock [Member]
Debt Instrument [Line Items]
Series A Preferred Shares, shares outstanding | shares														600,000	6,400,000
Maximum [Member]
Debt Instrument [Line Items]
Annual commitment fee			0.25%

[1] (3) This construction loan has a borrowing capacity of up to $43.7 million and is collateralized by the NOVA build-to-suit, which was placed in-service in the third quarter of 2016. We can repay all or a portion of the Northern Virginia Construction Loan, without penalty, at any time during the term of the loan.

[2] This construction loan is collateralized by 440 First Street, NW. In May 2016, we extended the maturity date by one year to May 30, 2017. 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, 2017, per the terms of the loan agreement, 50% of the outstanding principal balance and all of the outstanding accrued interest were recourse to us.

[3] Consists of Van Buren Office Park, Herndon Corporate Center, Windsor at Battlefield, Reston Business Campus, Enterprise Center, Gateway Centre Manassas, Linden Business Center and Prosperity Business Center (collectively, the “NOVA Non-Core Portfolio”).

[4] ) This development site could have supported up to 712,000 rentable square feet.

XML

Debt - Unsecured Term Loan (Detail) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2017	Sep. 30, 2016	Mar. 31, 2016	Apr. 27, 2017	Dec. 31, 2016
Debt Instrument [Line Items]
Repayments of debt		$ 97,891		$ 93,119
Line of Credit Facility, Increase (Decrease), Net		4,000
Debt Issuance Costs, Net		5,800				$ 6,200
Deferred costs, net		$ (41,603)				(42,712)
Basis spread over variable rate		1.50%
Unsecured Debt		$ 299,433				299,404
Tranche A
Debt Instrument [Line Items]
Maturity Date		December 2020
Basis spread over variable rate		1.45%
Tranche B
Debt Instrument [Line Items]
Maturity Date		June 2021
Basis spread over variable rate		1.45%
Tranche C
Debt Instrument [Line Items]
Maturity Date		December 2022
Basis spread over variable rate		1.80%
Unsecured revolving credit facility
Debt Instrument [Line Items]
Repayments of debt		$ 97,000
Maturity Date	[1]	December 2019
Unsecured revolving credit facility, net, effective interest rate of LIBOR plus 1.50%, maturing December 2019(2)		$ 51,000				144,000
Unsecured Debt [Member]
Debt Instrument [Line Items]
Carrying value of the debt instruments		300,000				300,000
Deferred costs, net		(567)				(596)
Unsecured Debt [Member] | Tranche A
Debt Instrument [Line Items]
Carrying value of the debt instruments		100,000				100,000
Unsecured Debt [Member] | Tranche B
Debt Instrument [Line Items]
Carrying value of the debt instruments		100,000				100,000
Unsecured Debt [Member] | Tranche C
Debt Instrument [Line Items]
Carrying value of the debt instruments		100,000				100,000
Continuing Operations
Debt Instrument [Line Items]
Unamortized fair value adjustments		(2,993)				(3,195)
Continuing Operations | Unsecured revolving credit facility
Debt Instrument [Line Items]
Unamortized fair value adjustments		(2,242)				$ (2,445)
One Fair Oaks [Member] | Unsecured revolving credit facility
Debt Instrument [Line Items]
Repayments of debt		14,000
Plaza Five Hundred [Member] | Unsecured revolving credit facility
Debt Instrument [Line Items]
Repayments of debt		70,000
Rivers Park One And Two [Member] | Unsecured revolving credit facility
Debt Instrument [Line Items]
Repayments of debt		$ 13,000
Rivers Park One And Two [Member] | Unsecured Debt [Member]
Debt Instrument [Line Items]
Repayments of debt			$ 7,000
Subsequent Event [Member] | Unsecured revolving credit facility
Debt Instrument [Line Items]
Unsecured revolving credit facility, net, effective interest rate of LIBOR plus 1.50%, maturing December 2019(2)					$ 51,000

[1] This construction loan is collateralized by 440 First Street, NW. In May 2016, we extended the maturity date by one year to May 30, 2017. 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, 2017, per the terms of the loan agreement, 50% of the outstanding principal balance and all of the outstanding accrued interest were recourse to us.

XML

Derivative Instruments - Summary of Interest Rate Swap Agreements (Detail) - 3 months ended Mar. 31, 2017 - USD ($) $ in Thousands	Total	Total	Total
Derivatives, Fair Value [Line Items]
Fixed LIBOR Interest Rate		1.40%
Interest Rate Swap
Derivatives, Fair Value [Line Items]
Notional Amount	$ 240,000
Fixed LIBOR Interest Rate		1.44%	0.00%
Interest Rate Swap One
Derivatives, Fair Value [Line Items]
Maturity Date	Jul. 31, 2016
Interest Rate Swap Two
Derivatives, Fair Value [Line Items]
Maturity Date	Jul. 31, 2016
Interest Rate Swap Three
Derivatives, Fair Value [Line Items]
Maturity Date	Jul. 31, 2017
Notional Amount	$ 30,000
Interest Rate Contractual Component	LIBOR
Fixed LIBOR Interest Rate			0.00%
Interest Rate Swap Four
Derivatives, Fair Value [Line Items]
Maturity Date	Jul. 31, 2017
Notional Amount	$ 30,000
Interest Rate Contractual Component	LIBOR
Fixed LIBOR Interest Rate			0.00%
Interest Rate Swap Five
Derivatives, Fair Value [Line Items]
Maturity Date	Jul. 31, 2017
Notional Amount	$ 25,000
Interest Rate Contractual Component	LIBOR
Fixed LIBOR Interest Rate			0.00%
Interest Rate Swap Six
Derivatives, Fair Value [Line Items]
Maturity Date	Jul. 31, 2017
Notional Amount	$ 12,500
Interest Rate Contractual Component	LIBOR
Fixed LIBOR Interest Rate			0.00%
Interest Rate Swap Seven [Member]
Derivatives, Fair Value [Line Items]
Maturity Date	Jul. 31, 2017
Notional Amount	$ 50,000
Interest Rate Contractual Component	LIBOR
Fixed LIBOR Interest Rate			0.00%
Interest Rate Swap Eight [Member]
Derivatives, Fair Value [Line Items]
Maturity Date	Jul. 31, 2018
Notional Amount	$ 12,500
Interest Rate Contractual Component	LIBOR
Fixed LIBOR Interest Rate			0.00%
Interest Rate Swap Nine [Member]
Derivatives, Fair Value [Line Items]
Maturity Date	Jul. 31, 2018
Notional Amount	$ 30,000
Interest Rate Contractual Component	LIBOR
Fixed LIBOR Interest Rate			0.00%
Interest Rate Swap Ten [Member]
Derivatives, Fair Value [Line Items]
Maturity Date	Jul. 31, 2018
Notional Amount	$ 25,000
Interest Rate Contractual Component	LIBOR
Fixed LIBOR Interest Rate			0.00%
Interest Rate Swap Eleven
Derivatives, Fair Value [Line Items]
Maturity Date	Jul. 31, 2018
Notional Amount	$ 25,000
Interest Rate Contractual Component	LIBOR
Fixed LIBOR Interest Rate			0.00%

XML

Derivative Instruments - Additional Information (Detail) $ in Thousands	3 Months Ended
	Mar. 31, 2017 USD ($) Interest_Rate_Swaps	Mar. 31, 2016 USD ($)	Mar. 31, 2017 USD ($)	Mar. 31, 2017	Mar. 31, 2017 Integer	Mar. 31, 2017 Rate
Derivatives, Fair Value [Line Items]
Number of interest rate swap agreements	9				9
Fixed effective interest rate				1.40%
Interest Rate Swap
Derivatives, Fair Value [Line Items]
Fixed effective interest rate				1.44%		0.00%
Amount on variable rate debt			$ 240,000
Interest Rate Swap | Interest Expense
Derivatives, Fair Value [Line Items]
Accumulated other comprehensive loss reclassified as an increase in interest expense	$ 400
Interest Income		$ 800
Estimated accumulated other comprehensive loss reclassified as an increase in interest expense over the following twelve months	$ 400

XML

Fair Value Measurements - Fair Value of Assets and Liabilities (Detail) - Recurring Measurements - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Recurring Measurements:
Derivative instrument-swap assets	$ 68
Derivative instrument-swap liabilities	378	$ 906
Level 1
Recurring Measurements:
Derivative instrument-swap assets	0
Derivative instrument-swap liabilities	0	0
Level 2
Recurring Measurements:
Derivative instrument-swap assets	68
Derivative instrument-swap liabilities	378	906
Level 3
Recurring Measurements:
Derivative instrument-swap assets	0
Derivative instrument-swap liabilities	$ 0	$ 0

XML

Fair Value Measurements - Additional Information (Detail) $ in Thousands		3 Months Ended
		Mar. 31, 2017 USD ($) snapshot Interest_Rate_Swaps	Mar. 31, 2016 USD ($)	Mar. 31, 2017 USD ($)	Mar. 31, 2017 Integer	Dec. 31, 2016 USD ($)
Derivatives, Fair Value [Line Items]
(Gain) loss on sale of rental property		$ 42,799	$ (1,155)
Number of Interest Rate Derivatives Held		9			9
Debt Issuance Costs, Net				$ 5,800		$ 6,200
Interest Rate Swap
Derivatives, Fair Value [Line Items]
Notional Amount				$ 240,000
Minimum number of daily snapshot used for valuation of interest rate swap agreements | snapshot		7,500
NOVA Non-Core Portfolio [Member]
Derivatives, Fair Value [Line Items]
Disposition Date Of Property	[1]	Mar. 25, 2016
One Fair Oaks [Member]
Derivatives, Fair Value [Line Items]
Disposition Date Of Property	[2]	Jan. 09, 2017
(Gain) loss on sale of rental property		$ 100

[1] Consists of Van Buren Office Park, Herndon Corporate Center, Windsor at Battlefield, Reston Business Campus, Enterprise Center, Gateway Centre Manassas, Linden Business Center and Prosperity Business Center (collectively, the “NOVA Non-Core Portfolio”).

[2] (1) One Fair Oaks was classified as held-for-sale at December 31, 2016, and the building was vacant at the time of sale.

XML

Fair Value Measurements - Fair Value of Debt Instruments (Detail) $ in Thousands		Mar. 31, 2017 USD ($) ft²	Dec. 31, 2016 USD ($)	Mar. 31, 2016 ft²
Fair Value Assets Liabilities Quantitative Information [Line Items]
Debt Issuance Costs, Net		$ 5,800	$ 6,200
Financial Liabilities:
Area of Real Estate Property | ft²		5,996,668		6,543,784
Carrying Value
Financial Liabilities:
Carrying value of the debt instruments		$ 649,516	743,407
Carrying Value | Mortgages [Member]
Financial Liabilities:
Carrying value of the debt instruments	[1]	298,516	299,407
Carrying Value | Unsecured Debt [Member]
Financial Liabilities:
Carrying value of the debt instruments	[1]	300,000	300,000
Carrying Value | Unsecured revolving credit facility
Financial Liabilities:
Carrying value of the debt instruments	[1]	51,000	144,000
Fair Value
Financial Liabilities:
Fair value of the debt instruments		647,923	744,927
Fair Value | Mortgages [Member]
Financial Liabilities:
Fair value of the debt instruments		296,923	300,927
Fair Value | Unsecured Debt [Member]
Financial Liabilities:
Fair value of the debt instruments		300,000	300,000
Fair Value | Unsecured revolving credit facility
Financial Liabilities:
Fair value of the debt instruments		$ 51,000	$ 144,000

[1] The debt balances exclude a combined total of $5.8 million and $6.2 million of unamortized deferred financing costs at March 31, 2017 and December 31, 2016, respectively.

XML

Equity - Additional Information (Detail) - $ / shares										1 Months Ended	3 Months Ended
	May 15, 2017	May 08, 2017	Apr. 25, 2017	Feb. 15, 2017	Feb. 08, 2017	Jan. 24, 2017	Jul. 25, 2016	Jul. 06, 2016	Jan. 19, 2016	Apr. 27, 2016	Mar. 31, 2017		Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2016	Dec. 31, 2015
Dividends Payable [Line Items]
Series A Preferred Shares, shares outstanding											600,000					6,400,000
Preferred Stock, Dividend Rate, Percentage															7.75%
Dividend declared date						Jan. 24, 2017
Series A Preferred Shares
Dividends Payable [Line Items]
Series A Preferred Shares, shares outstanding								600,000									6,400,000
Stock Redeemed or Called During Period, Shares											2,200,000		600,000	3,600,000	2,200,000
Preferred Stock, Redemption Price Per Share													$ 25.00			$ 25.00
Preferred Stock, Redemption Date								Jul. 06, 2016	Jan. 19, 2016	Apr. 27, 2016
Common Shares
Dividends Payable [Line Items]
Common share dividend per share declared						$ 0.10
Common share dividend per share annualized						$ 0.40
Dividend paid date				Feb. 15, 2017
Dividend record date					Feb. 08, 2017
Subsequent Event [Member]
Dividends Payable [Line Items]
Dividend declared date			Apr. 25, 2017
Subsequent Event [Member] | Common Shares
Dividends Payable [Line Items]
Common share dividend per share declared			$ 0.10
Common share dividend per share annualized			$ 0.40
Dividend paid date	May 15, 2017
Dividend record date		May 08, 2017
Storey Park [Member]
Dividends Payable [Line Items]
Ownership Interest											97.00%
Disposition Date Of Property							Jul. 25, 2016				Jul. 25, 2016	[1]

[1] ) This development site could have supported up to 712,000 rentable square feet.

XML

Equity - Company's Allocation Between Non-controlling Interests (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Dec. 31, 2016	Dec. 31, 2015
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Total equity	$ 477,360	$ 560,441	$ 436,383	$ 625,328
Net Income (Loss) Attributable to Parent	43,145	46
Net income (loss)		32
Changes in ownership, net		(53,145)
Distributions to owners		(10,948)
Other comprehensive income		(826)
Increase (Decrease) in Temporary Equity [Roll Forward]
Beginning Balance, Redeemable noncontrolling interests	28,244	28,813
Net income (loss), Redeemable noncontrolling interests	1,884	(133)
Change in ownership, net, Redeemable noncontrolling interests	(2,382)	(1,644)
Distributions to owners, Redeemable noncontrolling interests	(255)	(393)
Other comprehensive income, Redeemable noncontrolling interests	25	(36)
Ending Balance, Redeemable noncontrolling interests	27,516	26,607
Repurchase of Common Shares	(232)	(122)
First Potomac Realty Trust
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance	436,383	624,528
Net Income (Loss) Attributable to Parent	43,145	46
Changes in ownership, net	3,076	(53,145)
Distributions to owners	(5,815)	(10,948)
Other comprehensive income	571	(826)
Ending Balance	$ 477,360	559,655
Non-redeemable Noncontrolling Interests
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Noncontrolling interests in a consolidated partnership		786		$ 800
Net income (loss)		(14)
Changes in ownership, net		0
Distributions to owners		0
Other comprehensive income		$ 0

XML

Equity - Company's Accumulated Other Comprehensive Loss (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Equity [Abstract]
Beginning balance	$ (844)
Net unrealized gain (loss) on derivative instruments	596	$ (862)
Ending balance	(273)	(3,186)
Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Net of Tax, Portion Attributable to Noncontrolling Interest	$ 25	$ (36)

XML

Noncontrolling Interests - Additional Information (Detail) - USD ($) $ in Millions		3 Months Ended
	Jul. 25, 2016	Mar. 31, 2017		Dec. 31, 2016	Mar. 31, 2016
Business Acquisition [Line Items]
Cost to acquire all of the outstanding common Operating Partnership units not owned by the Company		$ 26.2
Fair value adjustment, cost basis		$ 3.7		$ 6.1
Outstanding Operating Partnership units not owned by the Company		2,545,602
Operating Partnership units not owned by Company		0.00%
Common operating partnership units redeemed for cash					38,539
Common operating partnership units redeemed for common shares		0
Storey Park [Member]
Business Acquisition [Line Items]
Ownership Interest		97.00%
Disposition Date Of Property	Jul. 25, 2016	Jul. 25, 2016	[1]

[1] ) This development site could have supported up to 712,000 rentable square feet.

XML

Share-Based Payments - Additional Information (Detail) - USD ($)	3 Months Ended
	Mar. 31, 2017	Sep. 30, 2016	Mar. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Payment Award, Shares Purchased for Award	418,286
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Payment Award, Shares Purchased for Award	160,349
Compensation expense associated with trustee share based awards	$ 800,000		$ 400,000
Unrecognized compensation cost related to non-vested shares	$ (7,600,000)
Non-Vested Share Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted-average period for recognition of non-vested shares	3 years 2 months
Performance Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common Stock, Other Value, Outstanding	$ 7.11
Executive Officer [Member] | Performance Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Payment Award, Shares Purchased for Award		257,937
Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate	0.70%
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate	25.82%
Minimum [Member] | Performance Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate	25.00%
Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate	1.60%
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate	22.93%
Maximum [Member] | Performance Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate	300.00%

XML

Share-Based Payments - Summary of Company's Non-vested Share Awards (Detail)	3 Months Ended
	Mar. 31, 2017 $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Non-vested Shares, Beginning Balance	711,374
Non-vested Shares, Granted	418,286
Non-vested Shares, Ending Balance	1,046,860
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period	80,179
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value | $ / shares	$ 10.99
Weighted Average Grant Date Fair Value, Beginning Balance | $ / shares	9.85
Weighted Average Grant Date Fair Value, Granted | $ / shares	8.54
Weighted Average Grant Date Fair Value, Ending Balance | $ / shares	$ 9.23
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Non-vested Shares, Granted	160,349
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]
Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Expired In Period Weighted Average Grant Date Fair Value | $ / shares	$ 12.38
Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Expired In Period	(1,630)
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period	(991)
Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeited In Period Weighted Average Grant Date Fair Values | $ / shares	$ 11.03

XML

Segment Information - Additional Information (Detail) $ in Thousands	3 Months Ended
	Mar. 31, 2017 USD ($) segment	Mar. 31, 2016 USD ($)
Segment Reporting [Abstract]
Number of Reportable Segments | segment	4
Corporate Assets Not Allocated To Any Reportable Segments	$ 17,400	$ 92,300
Capital Expenditure For Corporate Assets Not Allocated To Any Reportable Segments		$ 100

XML

Segment Information - Summary of Segment Information (Detail) $ in Thousands	3 Months Ended
	Mar. 31, 2017 USD ($) ft² Integer building	Mar. 31, 2016 USD ($) ft² Integer	Dec. 31, 2016 USD ($)
Segment Reporting Information [Line Items]
Interest Paid, Capitalized	$ 0	$ 200
Number of buildings | Integer	71	73
Area of Real Estate Property | ft²	5,996,668	6,543,784
Total revenues	$ 37,823	$ 42,697
Property operating expense	(9,958)	(11,537)
Real estate taxes and insurance	(4,661)	(5,216)
Total property operating income	23,204	25,944
Depreciation and amortization expense	(14,566)	(15,006)
General and administrative	(4,497)	(4,578)
Other Nonoperating Income	40,888
Other income		6,461
Net income (loss)	45,029	(101)
Total assets	1,203,997	1,359,943	$ 1,260,247
Capital expenditure	6,810	22,643
Shares Tendered By Employees For Statutory Tax Withholdings Upon Issuance Of Common Stock	232	122
Capital expenditures for corporate assets not allocated to any reportable segments		100
Corporate Assets Not Allocated To Any Reportable Segments	$ 17,400	$ 92,300
Washington, D.C.
Segment Reporting Information [Line Items]
Number of buildings	6	6
Area of Real Estate Property | ft²	917,643	918,566
Total revenues	$ 11,722	$ 11,290
Property operating expense	(3,139)	(2,968)
Real estate taxes and insurance	(2,292)	(2,372)
Total property operating income	6,291	5,950
Total assets	443,800	468,561
Capital expenditure	$ 1,522	$ 4,910
Maryland(1)
Segment Reporting Information [Line Items]
Number of buildings	34	34
Area of Real Estate Property | ft²	1,886,177	1,885,630
Total revenues	$ 11,235	$ 11,587
Property operating expense	(2,657)	(3,235)
Real estate taxes and insurance	(982)	(929)
Total property operating income	7,596	7,423
Total assets	322,738	338,553
Capital expenditure	$ 2,350	$ 959
Northern Virginia
Segment Reporting Information [Line Items]
Number of buildings	12	14
Area of Real Estate Property | ft²	1,168,990	1,715,730
Total revenues	$ 7,312	$ 12,307
Property operating expense	(1,956)	(3,320)
Real estate taxes and insurance	(741)	(1,297)
Total property operating income	4,615	7,690
Total assets	260,564	294,480
Capital expenditure	$ 2,295	$ 15,757
Southern Virginia
Segment Reporting Information [Line Items]
Number of buildings	19	19
Area of Real Estate Property | ft²	2,023,858	2,023,858
Total revenues	$ 7,554	$ 7,513
Property operating expense	(2,206)	(2,014)
Real estate taxes and insurance	(646)	(618)
Total property operating income	4,702	4,881
Total assets	159,487	166,015
Capital expenditure	606	897
Furniture and Fixtures [Member]
Segment Reporting Information [Line Items]
Accrued capital expenditure	$ 4,600	$ 10,300