10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

____________________________________________________ 

FORM 10-Q

_______________________________________________________________________________________  

(Mark One)

☒ QUARTERLY REPORT PURSUANT TO SECTION 13 or 15(d) OF THE SECURITIES EXCHANGE ACT of 1934

For the Quarterly Period Ended September 30, 2020

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 001-34626

Piedmont Office Realty Trust, Inc.

(Exact name of registrant as specified in its charter)

 ____________________________________________________ 

Maryland	58-2328421
(State or other jurisdiction of incorporation or organization)	(I.R.S. Employer Identification Number)

5565 Glenridge Connector Ste. 450

Atlanta, Georgia 30342

(Address of principal executive offices) (Zip Code)

(770) 418-8800

(Registrant’s telephone number, including area code)

N/A

(Former name, former address and former fiscal year, if changed since last report)

Securities registered pursuant to Section 12(b) of the Act:

Title of each class	Trading Symbol(s)	Name of exchange on which registered
Common Stock, $0.01 par value	PDM	New York Stock Exchange

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 every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files).  Yes  x No  o

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 the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company,” and "emerging growth company" in Rule 12b-2 of the Exchange Act.

Large accelerated filer	x	Accelerated filer	☐
Non-accelerated filer	☐	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. o

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

Number of shares outstanding of the Registrant’s

common stock, as of October 28, 2020:

126,028,762 shares

FORM 10-Q

PIEDMONT OFFICE REALTY TRUST, INC.

TABLE OF CONTENTS

			Page No.
PART I	Financial Information
	Item 1.	Consolidated Financial Statements.	5
		Consolidated Balance Sheets (Unaudited)—September 30, 2020 and December 31, 2019	6
		Consolidated Statements of Income (Unaudited) for the Three and Nine Months Ended September 30, 2020 and 2019	7
		Consolidated Statements of Comprehensive Income (Unaudited) for the Three and Nine Months Ended September 30, 2020 and 2019	8
		Consolidated Statements of Stockholders' Equity (Unaudited) for the Three and Nine Months Ended September 30, 2020 and 2019	9
		Consolidated Statements of Cash Flows (Unaudited) for the Nine Months Ended September 30, 2020 and 2019	11
		Condensed Notes to Consolidated Financial Statements (Unaudited)	12
	Item 2.	Management’s Discussion and Analysis of Financial Condition and Results of Operations.	26
	Item 3.	Quantitative and Qualitative Disclosures About Market Risk.	42
	Item 4.	Controls and Procedures.	43
PART II.	Other Information
	Item 1.	Legal Proceedings.	44
	Item 1A.	Risk Factors.	44
	Item 2.	Unregistered Sales of Equity Securities and Use of Proceeds.	45
	Item 3.	Defaults Upon Senior Securities.	45
	Item 4.	Mine Safety Disclosures.	45
	Item 5.	Other Information.	45
	Item 6.	Exhibits.	46

2

CAUTIONARY NOTE REGARDING FORWARD-LOOKING STATEMENTS

Certain statements contained in this Form 10-Q may constitute forward-looking statements within the meaning of the federal securities laws. In addition, Piedmont Office Realty Trust, Inc. ("Piedmont," "we," "our," or "us"), or its executive officers on Piedmont’s behalf, may from time to time make forward-looking statements in reports and other documents Piedmont files with the Securities and Exchange Commission or in connection with other written or oral statements made to the press, potential investors, or others. Statements regarding future events and developments and Piedmont’s future performance, as well as management’s expectations, beliefs, plans, estimates, or projections relating to the future, are forward-looking statements. Forward-looking statements include statements preceded by, followed by, or that include the words “may,” “will,” “expect,” “intend,” “anticipate,” “estimate,” “believe,” “continue,” or other similar words. Examples of such statements in this report include descriptions of our real estate, financings, and operating objectives; discussions regarding future dividends and share repurchases; and discussions regarding the potential impact of economic conditions on our real estate and lease portfolio.

These statements are based on beliefs and assumptions of Piedmont’s management, which in turn are based on information available at the time the statements are made. Important assumptions relating to the forward-looking statements include, among others, assumptions regarding the demand for office space in the markets in which Piedmont operates, competitive conditions, and general economic conditions. These assumptions could prove inaccurate. The forward-looking statements also involve risks and uncertainties, which could cause actual results to differ materially from those contained in any forward-looking statement. Many of these factors are beyond Piedmont’s ability to control or predict. Such factors include, but are not limited to, the following:

•Actual or threatened public health epidemics or outbreaks, such as the novel coronavirus ("COVID-19") pandemic that the world is currently experiencing, and governmental and private measures taken to combat such health crises, which may affect our personnel, tenants, tenants' operations and ability to pay lease obligations, demand for office space, and the costs of operating our assets;

•The adequacy of our general reserve related to tenant receivables established as a result of the COVID-19 pandemic, as well as the impact of any increase in this reserve or the establishment of any other reserve in the future;

•Economic, regulatory, socio-economic changes, and/or technology changes (including accounting standards) that impact the real estate market generally, or that could affect patterns of use of commercial office space;

•The impact of competition on our efforts to renew existing leases or re-let space on terms similar to existing leases;

•Changes in the economies and other conditions affecting the office sector in general and specifically the seven markets in which we primarily operate where we have high concentrations of our Annualized Lease Revenue (see definition below);

•Lease terminations, lease defaults, or changes in the financial condition of our tenants, particularly by one of our large lead tenants;

•Adverse market and economic conditions, including any resulting impairment charges on both our long-lived assets or goodwill resulting therefrom;

•The success of our real estate strategies and investment objectives, including our ability to identify and consummate suitable acquisitions and divestitures;

•The illiquidity of real estate investments, including regulatory restrictions to which real estate investment trusts ("REITs") are subject and the resulting impediment on our ability to quickly respond to adverse changes in the performance of our properties;

•The risks and uncertainties associated with our acquisition and disposition of properties, many of which risks and uncertainties may not be known at the time of acquisition or disposition;

•Development and construction delays and resultant increased costs and risks;

•Our real estate development strategies may not be successful;

•Future acts of terrorism, civil unrest, or armed hostilities in any of the major metropolitan areas in which we own properties, or future cybersecurity attacks against us or any of our tenants;

•Costs of complying with governmental laws and regulations;

•Additional risks and costs associated with directly managing properties occupied by government tenants, including an increased risk of default by government tenants during periods in which state or federal governments are shut down or on furlough;

•Significant price and volume fluctuations in the public markets, including on the exchange which we listed our common stock;

•Changes in the method pursuant to which the LIBOR rates are determined and the phasing out of LIBOR after 2021;

•The effect of future offerings of debt or equity securities or changes in market interest rates on the value of our common stock;

•Uncertainties associated with environmental and other regulatory matters;

•Potential changes in political environment and reduction in federal and/or state funding of our governmental tenants;

3

•Changes in the financial condition of our tenants directly or indirectly resulting from geopolitical developments that could negatively affect international trade, including the uncertainty surrounding the United Kingdom's withdrawal from the European Union, the termination or threatened termination of existing international trade agreements, or the implementation of tariffs or retaliatory tariffs on imported or exported goods;

•The effect of any litigation to which we are, or may become, subject;

•Additional risks and costs associated with owning properties occupied by tenants in particular industries, such as oil and gas, co-working, etc., including risks of default during start-up and during economic downturns;

•Changes in tax laws impacting REITs and real estate in general, as well as our ability to continue to qualify as a REIT under the Internal Revenue Code of 1986 (the “Code”) or otherwise adversely affect our stockholders;

•The future effectiveness of our internal controls and procedures; and

•Other factors, including the risk factor described in Item 1A. of this Quarterly Report on Form 10-Q, as well as the risk factors discussed under Item 1A. of our Annual Report on Form 10-K for the year ended December 31, 2019.

Management believes these forward-looking statements are reasonable; however, undue reliance should not be placed on any forward-looking statements, which are based on current expectations. Further, forward-looking statements speak only as of the date they are made, and management undertakes no obligation to update publicly any of them in light of new information or future events.

Information Regarding Disclosures Presented

Annualized Lease Revenue ("ALR"), a non-GAAP measure, is calculated by multiplying (i) current rental payments (defined as base rent plus operating expense reimbursements, if payable by the tenant on a monthly basis under the terms of a lease that has been executed, but excluding (a) rental abatements and (b) rental payments related to executed but not commenced leases for space that was covered by an existing lease), by (ii) 12. In instances in which contractual rents or operating expense reimbursements are collected on an annual, semi-annual, or quarterly basis, such amounts are multiplied by a factor of 1, 2, or 4, respectively, to calculate the annualized figure. For leases that have been executed but not commenced relating to unleased space, ALR is calculated by multiplying (i) the monthly base rental payment (excluding abatements) plus any operating expense reimbursements for the initial month of the lease term, by (ii) 12. Unless stated otherwise, this measure excludes revenues associated with development properties and properties taken out of service for redevelopment, if any.

4

PART I.     FINANCIAL INFORMATION

ITEM 1.    CONSOLIDATED FINANCIAL STATEMENTS.

The information presented in the accompanying consolidated balance sheets and related consolidated statements of income, comprehensive income, stockholders’ equity, and cash flows reflects all adjustments that are, in management’s opinion, necessary for a fair and consistent presentation of financial position, results of operations, and cash flows in accordance with GAAP.

The accompanying financial statements should be read in conjunction with the notes to Piedmont’s financial statements and Management’s Discussion and Analysis of Financial Condition and Results of Operations included in this report on Form 10-Q and with Piedmont’s Annual Report on Form 10-K for the year ended December 31, 2019. Piedmont’s results of operations for the nine months ended September 30, 2020 are not necessarily indicative of the operating results expected for the full year.

5

PIEDMONT OFFICE REALTY TRUST, INC.

CONSOLIDATED BALANCE SHEETS (UNAUDITED)

(in thousands, except for share and per share amounts)

	September 30, 2020		December 31, 2019
Assets:
Real estate assets, at cost:
Land	$	505,228	$	485,560
Buildings and improvements, less accumulated depreciation of $803,160 and $730,750 as of September 30, 2020 and December 31, 2019, respectively	2,480,820		2,212,935
Intangible lease assets, less accumulated amortization of $63,353 and $50,766 as of September 30, 2020 and December 31, 2019, respectively	98,517		74,405
Construction in progress	56,393		29,920
Real estate assets held for sale, net	—		139,690
Total real estate assets	3,140,958		2,942,510
Cash and cash equivalents	23,958		13,545
Tenant receivables, net of allowance for doubtful accounts of $4,831 and $0 as of September 30, 2020 and December 31, 2019, respectively	11,301		8,226
Straight-line rent receivables	154,620		132,342
Restricted cash and escrows	1,781		1,841
Prepaid expenses and other assets	28,074		25,427
Goodwill	98,918		98,918
Deferred lease costs, less accumulated amortization of $169,975 and $147,324 as of September 30, 2020 and December 31, 2019, respectively	293,472		265,747
Other assets held for sale, net	—		28,201
Total assets	$	3,753,082	$	3,516,757
Liabilities:
Unsecured debt, net of discount and unamortized debt issuance costs of $11,589 and $7,626 as of September 30, 2020 and December 31, 2019, respectively	$	1,588,411	$	1,292,374
Secured debt, net of premiums and unamortized debt issuance costs of $448 and $343 as of September 30, 2020 and December 31, 2019, respectively	28,424		189,030
Accounts payable, accrued expenses and accrued capital expenditures	120,763		117,496
Dividends payable	—		26,427
Deferred income	36,613		34,609
Intangible lease liabilities, less accumulated amortization of $24,881 and $19,607 as of September 30, 2020 and December 31, 2019, respectively	38,324		25,069
Interest rate swaps	10,618		5,121
Other liabilities held for sale	—		7,657
Total liabilities	1,823,153		1,697,783
Commitments and Contingencies (Note 7)	—		—
Stockholders’ Equity:
Shares-in-trust, 150,000,000 shares authorized; none outstanding as of September 30, 2020 or December 31, 2019	—		—
Preferred stock, no par value, 100,000,000 shares authorized; none outstanding as of September 30, 2020 or December 31, 2019	—		—
Common stock, $0.01 par value, 750,000,000 shares authorized; 126,028,762 and 125,783,408 shares issued and outstanding as of September 30, 2020 and December 31, 2019, respectively	1,260		1,258
Additional paid-in capital	3,692,634		3,686,398
Cumulative distributions in excess of earnings	(1,740,670)		(1,871,375)
Other comprehensive income/(loss)	(24,993)		967
Piedmont stockholders’ equity	1,928,231		1,817,248
Noncontrolling interest	1,698		1,726
Total stockholders’ equity	1,929,929		1,818,974
Total liabilities and stockholders’ equity	$	3,753,082	$	3,516,757

See accompanying notes

6

PIEDMONT OFFICE REALTY TRUST, INC.

CONSOLIDATED STATEMENTS OF INCOME (UNAUDITED)

(in thousands, except for share and per share amounts)

	Three Months Ended				Nine Months Ended
	September 30,				September 30,
	2020		2019		2020		2019
Revenues:
Rental and tenant reimbursement revenue	$	128,280	$	130,579	$	391,681	$	382,213
Property management fee revenue	751		405		2,146		2,819
Other property related income	2,662		4,437		9,668		13,993
	131,693		135,421		403,495		399,025
Expenses:
Property operating costs	53,293		54,613		159,631		158,798
Depreciation	28,255		27,131		83,339		80,004
Amortization	22,990		19,505		70,970		55,666
Impairment loss on real estate assets	—		1,953		—		1,953
General and administrative	5,469		7,950		20,049		29,736
	110,007		111,152		333,989		326,157
Other income (expense):
Interest expense	(12,725)		(16,145)		(41,942)		(46,750)
Other income	319		263		817		1,292
Loss on early extinguishment of debt	—		—		(9,336)		—
Gain/(loss) on sale of real estate assets	(340)		32		191,032		39,370
	(12,746)		(15,850)		140,571		(6,088)
Net income	8,940		8,419		210,077		66,780
Net loss applicable to noncontrolling interest	3		3		2		3
Net income applicable to Piedmont	$	8,943	$	8,422	$	210,079	$	66,783
Per share information – basic:
Net income applicable to common stockholders	$	0.07	$	0.07	$	1.67	$	0.53
Per share information – diluted:
Net income applicable to common stockholders	$	0.07	$	0.07	$	1.66	$	0.53
Weighted-average common shares outstanding – basic	126,028,762		125,783,408		125,955,097		125,684,202
Weighted-average common shares outstanding – diluted	126,385,035		126,239,744		126,302,051		126,189,851

See accompanying notes

7

PIEDMONT OFFICE REALTY TRUST, INC.

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (UNAUDITED)

(in thousands)

	Three Months Ended						Nine Months Ended
	September 30,						September 30,
	2020			2019			2020			2019
Net income applicable to Piedmont		$	8,943		$	8,422		$	210,079		$	66,783
Other comprehensive loss:
Effective portion of loss on derivative instruments that are designated and qualify as cash flow hedges (See Note 5)	(2,443)			(1,386)			(26,949)			(6,874)
Plus/(less): Reclassification of net (gain)/loss included in net income (See Note 5)	810			(427)			989			(1,871)
Other comprehensive loss		(1,633)			(1,813)			(25,960)			(8,745)
Comprehensive income applicable to Piedmont		$	7,310		$	6,609		$	184,119		$	58,038

See accompanying notes

8

PIEDMONT OFFICE REALTY TRUST, INC.

CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ EQUITY (UNAUDITED)

FOR THE THREE MONTHS ENDED SEPTEMBER 30, 2020 AND 2019

(in thousands, except per share amounts)

	Common  Stock			Additional Paid-In Capital		Cumulative Distributions in Excess of Earnings		Other Comprehensive Income/(Loss)		Non- controlling Interest		Total Stockholders’ Equity
	Shares	Amount
Balance, June 30, 2020	126,025	$	1,260	$	3,691,377	$	(1,723,147)	$	(23,360)	$	1,707	$	1,947,837
Dividends to common stockholders ($0.21 per share), stockholders of subsidiaries, and dividends reinvested	—	—		—		(26,466)		—		(6)		(26,472)
Shares issued and amortized under the 2007 Omnibus Incentive Plan, net of tax	4	—		1,257		—		—		—		1,257
Net loss applicable to noncontrolling interest	—	—		—		—		—		(3)		(3)
Net income applicable to Piedmont	—	—		—		8,943		—		—		8,943
Other comprehensive loss	—	—		—		—		(1,633)		—		(1,633)
Balance, September 30, 2020	126,029	$	1,260	$	3,692,634	$	(1,740,670)	$	(24,993)	$	1,698	$	1,929,929
	Common  Stock			Additional Paid-In Capital		Cumulative Distributions in Excess of Earnings		Other Comprehensive Income/(Loss)		Non- controlling Interest		Total Stockholders’ Equity
	Shares	Amount
Balance, June 30, 2019	125,783	$	1,258	$	3,687,881	$	(1,989,446)	$	1,530	$	1,752	$	1,702,975
Offering costs	—	—		(700)		—		—		—		(700)
Dividends to common stockholders ($0.21 per share), stockholders of subsidiaries, and dividends reinvested	—	—		(74)		(26,414)		—		(7)		(26,495)
Shares issued and amortized under the 2007 Omnibus Incentive Plan, net of tax	—	—		(1,603)		—		—		—		(1,603)
Net loss applicable to noncontrolling interest	—	—		—		—		—		(3)		(3)
Net income applicable to Piedmont	—	—		—		8,422		—		—		8,422
Other comprehensive loss	—	—		—		—		(1,813)		—		(1,813)
Balance, September 30, 2019	125,783	$	1,258	$	3,685,504	$	(2,007,438)	$	(283)	$	1,742	$	1,680,783

See accompanying notes

9

PIEDMONT OFFICE REALTY TRUST, INC.

CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ EQUITY (UNAUDITED)

FOR THE NINE MONTHS ENDED SEPTEMBER 30, 2020 AND 2019

(in thousands, except per share amounts)

	Common Stock			Additional Paid-In Capital		Cumulative Distributions in Excess of Earnings		Other Comprehensive Income/(Loss)		Non- controlling Interest		Total Stockholders’ Equity
	Shares	Amount
Balance, December 31, 2019	125,783	$	1,258	$	3,686,398	$	(1,871,375)	$	967	$	1,726	$	1,818,974
Dividends to common stockholders ($0.63 per share), stockholders of subsidiaries, and dividends reinvested	—	—		(5)		(79,374)		—		(26)		(79,405)
Shares issued and amortized under the 2007 Omnibus Incentive Plan, net of tax	246	2		6,241		—		—		—		6,243
Net loss applicable to noncontrolling interest	—	—		—		—		—		(2)		(2)
Net income applicable to Piedmont	—	—		—		210,079		—		—		210,079
Other comprehensive loss	—	—		—		—		(25,960)		—		(25,960)
Balance, September 30, 2020	126,029	$	1,260	$	3,692,634	$	(1,740,670)	$	(24,993)	$	1,698	$	1,929,929

	Common Stock			Additional Paid-In Capital		Cumulative Distributions in Excess of Earnings		Other Comprehensive Income/(Loss)		Non- controlling Interest		Total Stockholders’ Equity
	Shares	Amount
Balance, December 31, 2018	126,219	$	1,262	$	3,683,186	$	(1,982,542)	$	8,462	$	1,772	$	1,712,140
Share repurchases as part of an announced plan	(728)	(7)		—		(12,475)		—		—		(12,482)
Offering costs	—	—		(700)		—		—		—		(700)
Dividends to common stockholders ($0.63 per share), stockholders of subsidiaries, and dividends reinvested	—	—		(216)		(79,204)		—		(27)		(79,447)
Shares issued and amortized under the 2007 Omnibus Incentive Plan, net of tax	292	3		3,234		—		—		—		3,237
Net loss applicable to noncontrolling interest	—	—		—		—		—		(3)		(3)
Net income applicable to Piedmont	—	—		—		66,783		—		—		66,783
Other comprehensive loss	—	—		—		—		(8,745)		—		(8,745)
Balance, September 30, 2019	125,783	$	1,258	$	3,685,504	$	(2,007,438)	$	(283)	$	1,742	$	1,680,783

See accompanying notes

10

PIEDMONT OFFICE REALTY TRUST, INC.

CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED)

(in thousands) 

	Nine Months Ended
	September 30,
	2020		2019
Cash Flows from Operating Activities:
Net income	$	210,077	$	66,780
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	83,339		80,004
Amortization of debt issuance costs net of favorable settlement of interest rate swaps	1,319		419
Other amortization	64,076		52,057
Impairment loss on real estate assets	—		1,953
Loss on early extinguishment of debt	349		—
General reserve for uncollectible accounts	4,831		—
Stock compensation expense	6,980		12,365
Gain on sale of real estate assets	(191,032)		(39,370)
Changes in assets and liabilities:
Increase in tenant and straight-line rent receivables	(30,898)		(10,660)
Increase in prepaid expenses and other assets	(3,745)		(1,958)
Cash paid upon settlement of interest rate swaps	(19,930)		—
Increase/(decrease) in accounts payable and accrued expenses	12,834		(2,496)
Increase in deferred income	610		1,149
Net cash provided by operating activities	138,810		160,243
Cash Flows from Investing Activities:
Acquisition of real estate assets and intangibles	(396,745)		(326,144)
Capitalized expenditures	(80,007)		(57,368)
Net sales proceeds from wholly-owned properties	350,807		180,975
Deferred lease costs paid	(27,011)		(16,632)
Net cash used in investing activities	(152,956)		(219,169)
Cash Flows from Financing Activities:
Debt issuance and other costs paid	(1,116)		(91)
Proceeds from debt	1,136,383		550,000
Repayments of debt	(1,001,711)		(358,041)
Discount paid due to loan modification	(525)		—
Costs of issuance of common stock	—		(259)
Value of shares withheld for payment of taxes related to employee stock compensation	(2,700)		(3,295)
Repurchases of common stock as part of announced plan	—		(16,899)
Dividends paid and discount on dividend reinvestments	(105,832)		(106,419)
Net cash provided by financing activities	24,499		64,996
Net increase in cash, cash equivalents, and restricted cash and escrows	10,353		6,070
Cash, cash equivalents, and restricted cash and escrows, beginning of period	15,386		6,034
Cash, cash equivalents, and restricted cash and escrows, end of period	$	25,739	$	12,104

See accompanying notes

11

PIEDMONT OFFICE REALTY TRUST, INC.

CONDENSED NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

SEPTEMBER 30, 2020

(Unaudited)

1.    Organization

Piedmont Office Realty Trust, Inc. (“Piedmont”) (NYSE: PDM) is a Maryland corporation that operates in a manner so as to qualify as a real estate investment trust (“REIT”) for federal income tax purposes and engages in the acquisition, development, redevelopment, management, and ownership of commercial real estate properties located primarily in select sub-markets within seven major Eastern U.S. office markets, including properties that are under construction, are newly constructed, or have operating histories. Piedmont was incorporated in 1997 and commenced operations in 1998. Piedmont conducts business primarily through Piedmont Operating Partnership, L.P. (“Piedmont OP”), a Delaware limited partnership, as well as performing the management of its buildings through two wholly-owned subsidiaries, Piedmont Government Services, LLC and Piedmont Office Management, LLC. Piedmont owns 99.9% of, and is the sole general partner of, Piedmont OP and as such, possesses full legal control and authority over the operations of Piedmont OP. The remaining 0.1% ownership interest of Piedmont OP is held indirectly by Piedmont through its wholly-owned, taxable REIT subsidiary, Piedmont Office Holdings, Inc. ("POH"), the sole limited partner of Piedmont OP. Piedmont OP owns properties directly, through wholly-owned subsidiaries, and through various joint ventures which it controls. References to Piedmont herein shall include Piedmont and all of its subsidiaries, including Piedmont OP and its subsidiaries and joint ventures.

As of September 30, 2020, Piedmont owned 57 in-service office properties in select sub-markets located within seven major U.S. office markets: Atlanta, Boston, Dallas, Minneapolis, New York, Orlando, and Washington, D.C. As of September 30, 2020, Piedmont's 57 in-service office properties comprised approximately 17.2 million square feet of primarily Class A commercial office space and were 86.9% leased.

Piedmont internally evaluates all of its real estate assets as one operating segment, and accordingly does not report segment information.

2.    Summary of Significant Accounting Policies

Basis of Presentation and Principles of Consolidation

The consolidated financial statements of Piedmont have been prepared in accordance with the rules and regulations of the Securities and Exchange Commission (the “SEC”), including the instructions to Form 10-Q and Article 10 of Regulation S-X, and do not include all of the information and footnotes required by GAAP for complete financial statements. In the opinion of management, the statements for the unaudited interim periods presented include all adjustments, which are of a normal and recurring nature, necessary for a fair presentation of the results for such periods. Results for these interim periods are not necessarily indicative of a full year’s results.

Piedmont’s consolidated financial statements include the accounts of Piedmont, Piedmont’s wholly-owned subsidiaries, any variable interest entity ("VIE") for which Piedmont or any of its wholly-owned subsidiaries is considered to have the power to direct the activities of the entity and the obligation to absorb losses/right to receive benefits, or any entity in which Piedmont or any of its wholly-owned subsidiaries owns a controlling interest. In determining whether Piedmont or Piedmont OP has a controlling interest, the following factors, among others, are considered: equity ownership, voting rights, protective rights of investors, and participatory rights of investors. For further information, refer to the financial statements and footnotes included in Piedmont’s Annual Report on Form 10-K for the year ended December 31, 2019.

All intercompany balances and transactions have been eliminated upon consolidation.

Further, Piedmont has formed special purpose entities to acquire and hold real estate. Each special purpose entity is a separate legal entity. Consequently, the assets of these special purpose entities are not available to all creditors of Piedmont. The assets owned by these special purpose entities are being reported on a consolidated basis with Piedmont’s assets for financial reporting purposes only.

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Use of Estimates

The preparation of the accompanying consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the amounts reported in the accompanying consolidated financial statements and notes. The most significant of these estimates include the underlying cash flows and holding periods used in assessing impairment, judgements regarding the recoverability of goodwill, and the assessment of the collectibility of receivables. Future impacts of the COVID-19 pandemic on Piedmont and its tenants may affect these and other estimates used in the preparation of these financial statements. While Piedmont has made, what it believes to be, appropriate accounting estimates based on the facts and circumstances available as of the reporting date, actual results could materially differ from those estimates.

Income Taxes

Piedmont has elected to be taxed as a REIT under the Internal Revenue Code of 1986, as amended, and has operated as such, beginning with its taxable year ended December 31, 1998. To qualify as a REIT, Piedmont must meet certain organizational and operational requirements, including a requirement to distribute at least 90% of its annual REIT taxable income. As a REIT, Piedmont is generally not subject to federal income taxes, subject to fulfilling, among other things, its taxable income distribution requirement. Piedmont is subject to certain taxes related to the operations of properties in certain locations, as well as operations conducted by its taxable REIT subsidiary, POH, which have been provided for in the financial statements.

Operating Leases

Piedmont recognized the following fixed and variable lease payments, which together comprised rental and tenant reimbursement revenue in the accompanying consolidated statements of income for the three and nine months ended September 30, 2020 and 2019, respectively, as follows (in thousands):

	Three Months Ended				Nine Months Ended
	September 30, 2020		September 30, 2019		September 30, 2020		September 30, 2019
Fixed payments	$	108,071	$	105,207	$	329,281	$	311,503
Variable payments	20,209		25,372		62,400		70,710
Total Rental and Tenant Reimbursement Revenue	$	128,280	$	130,579	$	391,681	$	382,213

Operating leases where Piedmont is the lessee relate primarily to office space in buildings owned by third parties. For both the three and nine months ended September 30, 2020 and 2019, Piedmont recognized approximately $20,000 and $60,000, respectively, of operating lease costs related to these office space leases. As of September 30, 2020, the weighted-average lease term of Piedmont's right of use assets is approximately three years, and the weighted-average discount rate is 3.35%.

Intangible Assets and Liabilities Resulting from Purchasing Real Estate Assets

Upon the acquisition of real properties, Piedmont allocates the purchase price of the properties to tangible assets, consisting of land, building, site improvements, and identified intangible assets and liabilities, including the value of in-place leases, based in each case on Piedmont's estimate of their fair values in accordance with Accounting Standards Codification ("ASC") 820 Fair Value Measurements.

Gross intangible lease assets and liabilities arising from in-place leases, inclusive of amounts classified as real estate assets held for sale, recorded at acquisition as of September 30, 2020 and December 31, 2019, respectively, are as follows (in thousands):

	September 30, 2020		December 31, 2019
Intangible Lease Assets:
Above-Market In-Place Lease Assets	$	2,227	$	2,082
In-Place Lease Valuation	$	159,643	$	157,101
Intangible Lease Origination Costs (included as component of Deferred Lease Costs)	$	254,856	$	256,627
Intangible Lease Liabilities (Below-Market In-Place Leases)	$	63,205	$	84,292

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For the three and nine months ended September 30, 2020 and 2019, respectively, Piedmont recognized amortization of intangible lease costs as follows (in thousands):

	Three Months Ended				Nine Months Ended
	September 30, 2020		September 30, 2019		September 30, 2020		September 30, 2019
Amortization of Intangible Lease Origination Costs and In-Place Lease Valuation included in amortization expense	$	18,522	$	15,881	$	58,674	$	45,057
Amortization of Above-Market and Below-Market In-Place Lease intangibles as a net increase to rental revenues	$	3,147	$	1,923	$	9,423	$	6,009

Net intangible assets and liabilities as of September 30, 2020 will be amortized as follows (in thousands):

	Intangible Lease Assets
	Above-Market In-place Lease Assets		In-Place Lease Valuation		Intangible Lease Origination Costs (1)		Below-Market In-place Lease Liabilities
For the remainder of 2020	$	117	$	7,576	$	10,368	$	2,884
For the years ending December 31:
2021	420		27,635		38,743		10,899
2022	300		20,773		30,527		8,422
2023	103		13,923		21,019		5,139
2024	70		9,141		14,462		3,238
2025	6		5,658		10,069		2,072
Thereafter	18		12,777		24,881		5,670
	$	1,034	$	97,483	$	150,069	$	38,324
Weighted-Average Amortization Period (in years)	3		5		6		5

(1)Included as a component of Deferred Lease Costs in the accompanying consolidated balance sheets.

Accounting Pronouncements and Amendments Adopted during the Nine Months Ended September 30, 2020

Reference Rate Reform Relief

Accounting Standards Update No. 2020-04, Reference Rate Reform (Topic 848) ("ASU 2020-04"), was issued in March 2020. ASU 2020-04 contains practical expedients for reference rate reform related activities that impact debt, leases, derivatives and other contracts. The guidance in ASU 2020-04 is optional and may be elected over time as reference rate reform activities occur. During the nine months ended September 30, 2020, Piedmont elected to apply the hedge accounting expedients related to probability and the assessments of effectiveness for future LIBOR-indexed cash flows to assume that the index upon which future hedged transactions will be based matches the index on the corresponding derivatives. Application of these expedients preserves the presentation of derivatives consistent with past presentation. Piedmont continues to evaluate the impact of the guidance and may apply other elections as applicable as additional changes in the market occur.

Financial Instruments- Credit Loss Amendments

On January 1, 2020, Piedmont adopted ASU No. 2016-13, Financial Instruments—Credit Losses (Topic 326), Measurement of Credit Losses on Financial Instruments, as well as ASU No. 2019-04, Codification Improvements to Topic 326, Financial Instruments - Credit Losses, Topic 815, Derivatives and Hedging, and Topic 825, Financial Instruments, and ASU No. 2019-05, Financial Instruments- Credit Losses: Targeted Transition Relief (collectively the "Credit Loss Amendments"). The provisions of the Credit Loss Amendments replace the "incurred loss" approach with an "expected loss" model for impairing trade and other receivables, held-to-maturity debt securities, net investment in leases, and off-balance-sheet credit exposures, which will generally result in earlier recognition of allowances for credit losses. However, the Financial Accounting Standards Board (the "FASB") also issued ASU No. 2018-19 Codification Improvements to Topic 326, Financial Instruments - Credit

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Losses, which is effective concurrent with the Credit Loss Amendments, and excludes receivables arising from operating leases from the scope of the Credit Loss Amendments and affirms that such receivables should be evaluated for collectibility as prescribed by ASC 842 Leases. As substantially all of Piedmont's receivables are operating lease receivables there was no material impact to Piedmont's accompanying consolidated financial statements or disclosures as a result of adoption of the Credit Loss Amendments.

During the nine months ended September 30, 2020, the FASB issued a Staff Q&A on Topic 842 and Topic 840 (lease accounting guidance): Accounting for lease concessions related to the effects of the COVID-19 pandemic. Generally, changes to payment terms not contemplated by the lease contract should be accounted for under Topic 842 as a lease modification. The FASB staff has provided relief from this modification guidance through an accounting policy election, provided that changes to the payment terms do not result in a substantial increase in the rights of either the lessee or the lessor under the lease. Piedmont has elected not to apply the relief provided by the FASB Staff, and has instead accounted for all rent relief agreements as result of COVID-19 as lease modifications. See further details concerning rent relief agreements with Piedmont's tenants in Note 7 below.

Reclassifications

Certain prior period amounts presented in the accompanying consolidated balance sheets have been reclassified as of December 31, 2019 to conform to the current period financial statement presentation related to the 1901 Market Street building, which was classified as held for sale as of March 31, 2020, and sold on June 25, 2020. (see Note 8).

3.    Acquisitions

During the nine months ended September 30, 2020, Piedmont acquired three properties and adjacent developable land (collectively the "Dallas Galleria Office Towers") using cash on hand and available funds from the $500 Million Unsecured 2018 Line of Credit, as noted below:

Property	Metropolitan Statistical Area	Date of Acquisition	Ownership Percentage Acquired	Rentable Square Feet	Percentage Leased as of Acquisition	Net Contractual Purchase Price(1)(in millions)
Dallas Galleria Office Towers	Dallas, Texas	February 12, 2020	100%	1,435,466	95%	$396.2

(1)Price includes the purchase of an adjacent parcel of approximately 1.9 acres of developable land.

The purchase price of the Dallas Galleria Office Towers and undeveloped land, inclusive of approximately $0.6 million of closing costs, was allocated as follows:

	Dallas Galleria Office Towers and Undeveloped Land
Land	$	19,674
Building and improvements	293,760
Intangible lease assets (1)	49,177
Lease acquisition costs, net of tenant credits received from seller (1)	1,344
Intangible lease origination costs (1)	55,060
Intangible lease liabilities (1)	(22,169)
Total purchase price	$	396,846

(1)Amortization of in-place lease intangibles and lease acquisition costs are recognized using the straight-line method over approximately 5.2 years, the average remaining life of in-place leases.

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4.    Debt

During the three months ended September 30, 2020, Piedmont issued, through its wholly owned operating partnership, Piedmont OP, $300 million in aggregate principal amount of 3.15% Senior Notes due 2030 (the “$300 Million Unsecured Senior Notes”), which mature on August 15, 2030. Upon issuance of the $300 Million Unsecured Senior Notes, Piedmont OP received proceeds of approximately $297.7 million, reflecting a discount of approximately $2.3 million which will be amortized as interest expense under the effective interest method over the ten-year term of the $300 Million Unsecured Senior Notes. In addition, in conjunction with the issuance, Piedmont settled four forward starting rate swaps, consisting of notional amounts of $200 million. These swaps were settled at a loss of approximately $19.9 million that was recorded as accumulated other comprehensive income and is being amortized as an increase in interest expense over the ten-year term of the $300 Million Unsecured Senior Notes. See Note 5 for further detail. The proceeds from the $300 Million Unsecured Senior Notes were used to fully repay the $300 Million Unsecured 2020 Term Loan that was obtained for the purchase of the Dallas Galleria Office Towers.

Additionally, during the nine months ended September 30, 2020, Piedmont amended the $250 Million Unsecured 2018 Term Loan to reduce the applicable interest rate spread from LIBOR plus 160 basis points to LIBOR plus 95 basis points, based on Piedmont's current credit rating.

Interest on the $300 Million Unsecured Senior Notes is payable semi-annually in arrears on February 15 and August 15 of each year, beginning on February 15, 2021. The $300 Million Unsecured Senior Notes are fully and unconditionally guaranteed on a senior unsecured basis by Piedmont. Piedmont OP may, at its option, redeem the $300 Million Unsecured Senior Notes, in whole or in part, prior to May 15, 2030, at a redemption price equal to the greater of (i) 100% of the principal amount of the $300 Million Unsecured Senior Notes to be redeemed and (ii) a “make-whole” amount, plus any unpaid accrued interest. In addition, at any time on or after May 15, 2030, Piedmont OP may, at its option, redeem the $300 Million Unsecured Senior Notes, in whole or in part, at a redemption price equal to 100% of the principal amount of the $300 Million Unsecured Senior Notes to be redeemed plus unpaid accrued interest. The $300 Million Unsecured Senior Notes are subject to certain typical covenants that, subject to certain exceptions: (a) limit the ability of Piedmont and Piedmont OP to, among other things, incur additional secured and unsecured indebtedness; (b) limit the ability of Piedmont and Piedmont OP to merge, consolidate, sell, lease or otherwise dispose of their properties and assets substantially as an entirety; and (c) require Piedmont to maintain a pool of unencumbered assets. The $300 Million Unsecured Senior Notes are also subject to customary events of default which, if any of them occurs, would permit or require the principal of and accrued interest on the $300 Million Unsecured Senior Notes to become or to be declared due and payable.

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Finally, during the nine months ended September 30, 2020, Piedmont sold the 1901 Market Street building (see Note 8 for further details) and used the majority of the net sale proceeds to repay the $160 Million Fixed-Rate Loan that was secured by the property and all remaining outstanding borrowings under the $500 Million Unsecured 2018 Line of Credit. As a result of repaying the $160 Million Fixed-Rate Loan in advance of its stated maturity, Piedmont recognized a $9.3 million loss on early extinguishment of debt comprised of a prepayment penalty and unamortized deferred financing costs.

The following table summarizes the terms of Piedmont’s indebtedness outstanding as of September 30, 2020 and December 31, 2019 (in thousands):

Facility (1)	Stated Rate		Effective Rate (2)			Maturity		Amount Outstanding as of
								September 30, 2020		December 31, 2019
Secured (Fixed)
$35 Million Fixed-Rate Loan (3)	5.55	%	3.75	%		9/1/2021		$	27,976	$	28,687
$160 Million Fixed-Rate Loan (4)	3.48	%	3.58	%		7/5/2022		—		160,000
Net premium and unamortized debt issuance costs								448		343
Subtotal/Weighted Average (5)	5.55	%						28,424		189,030
Unsecured (Variable and Fixed)
Amended and Restated $300 Million Unsecured 2011 Term Loan (6)	LIBOR +  1.00%		1.16	%		11/30/2021		300,000		300,000
$500 Million Unsecured 2018 Line of Credit (6)	LIBOR + 0.90%		—	%		9/30/2022	(7)	—		—
$350 Million Unsecured Senior Notes	3.40	%	3.43	%		6/01/2023		350,000		350,000
$400 Million Unsecured Senior Notes	4.45	%	4.10	%		3/15/2024		400,000		400,000
$250 Million Unsecured 2018 Term Loan	LIBOR + 0.95%		2.08	%	(8)	3/31/2025		250,000		250,000
$300 Million Unsecured Senior Notes	3.15	%	3.90	%	(9)	8/15/2030		300,000		—
Discounts and unamortized debt issuance costs								(11,589)		(7,626)
Subtotal/Weighted Average (5)	2.99	%						1,588,411		1,292,374
Total/Weighted Average (5)	3.03	%						$	1,616,835	$	1,481,404

(1)Other than one mortgage, the $35 Million Fixed-Rate Loan, all of Piedmont’s outstanding debt as of September 30, 2020 and December 31, 2019 is interest-only until maturity.

(2)Effective rate after consideration of settled or in-place interest rate swap agreements, issuance premiums/discounts, and/or fair market value adjustments upon assumption of debt.

(3)Collateralized by the 5 Wall Street building in Burlington, Massachusetts.

(4)Previously collateralized by the 1901 Market Street building in Philadelphia, Pennsylvania.

(5)Weighted average is based on contractual balance of outstanding debt and the stated or effectively fixed interest rates as of September 30, 2020.

(6)On a periodic basis, Piedmont may select from multiple interest rate options, including the prime rate and various-length LIBOR locks on all or a portion of the principal. All LIBOR selections are subject to an additional spread over the selected rate based on Piedmont’s current credit rating.

(7)Piedmont may extend the term for up to one additional year (through two available six month extensions to a final extended maturity date of September 29, 2023) provided Piedmont is not then in default and upon payment of extension fees.

(8)The facility has a stated variable rate; however, Piedmont has entered into interest rate swap agreements which effectively fix, exclusive of changes to Piedmont's credit rating, $100 million of the principal balance to 3.56% through the maturity date of the loan. For the remaining variable portion of the loan, Piedmont may periodically select from multiple interest rate options, including the prime rate and various-length LIBOR locks on all or a portion of the principal. All LIBOR selections are subject to an additional spread over the selected rate based on Piedmont’s current credit rating. The rate presented is the weighted-average rate for the effectively fixed and variable portions of the debt outstanding as of September 30, 2020 (see Note 5 for more detail).

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(9)The $300 Million Unsecured Senior Notes have a fixed coupon rate of 3.15%, however, as a result of the issuance of the notes at a discount, Piedmont recognizes an effective interest rate on this debt issuance of 3.24%. After consideration of the impact of settled interest rate swap agreements, in addition to the issuance discount, the effective interest rate on this debt is 3.90%.

Piedmont made interest payments on all debt facilities, including interest rate swap cash settlements, of approximately $12.8 million and $17.8 million for the three months ended September 30, 2020 and 2019, respectively, and approximately $41.8 million and $49.7 million for the nine months ended September 30, 2020 and 2019, respectively. Also, Piedmont capitalized interest of approximately $0.2 million and $0.5 million for the three months ended September 30, 2020 and 2019, respectively, and approximately $0.6 million and $1.6 million for the nine months ended September 30, 2020 and 2019, respectively. As of September 30, 2020, Piedmont believes it was in compliance with all financial covenants associated with its debt instruments.

See Note 6 for a description of Piedmont’s estimated fair value of debt as of September 30, 2020.

5.    Derivative Instruments

Risk Management Objective of Using Derivatives

In addition to operational risks which arise in the normal course of business, Piedmont is exposed to economic risks such as interest rate, liquidity, and credit risk. In certain situations, Piedmont has entered into derivative financial instruments such as interest rate swap agreements and other similar agreements to manage interest rate risk exposure arising from current or future variable rate debt transactions. Interest rate swap agreements involve the receipt or payment of future known and uncertain cash amounts, the value of which are determined by interest rates. Piedmont’s objective in using interest rate derivatives is to add stability to interest expense and to manage its exposure to interest rate movements.

Cash Flow Hedges of Interest Rate Risk

Interest rate swaps designated as cash flow hedges involve the receipt of variable-rate amounts from a counterparty in exchange for Piedmont making fixed-rate payments over the life of the agreements without exchange of the underlying notional amount.

During the nine months ended September 30, 2020, Piedmont entered into four forward starting interest rate swap agreements with a total notional value of $200 million to hedge the risk of changes in the interest-related cash flows associated with an expected issuance of long-term debt. In conjunction with the issuance of the $300 Million Unsecured Senior Notes (see Note 4), Piedmont settled these forward starting swap agreements for a loss of approximately $19.9 million. The loss was recorded as accumulated other comprehensive income and is being amortized as additional interest expense over the ten-year term of the $300 Million Unsecured Senior Notes. Further, as of September 30, 2020, Piedmont was party to two other interest rate swap agreements, which are designated as effective cash flow hedges and hedge the variable cash flows covering $100 million of the $250 Million Unsecured 2018 Term Loan. The maximum length of time over which Piedmont is hedging its exposure to the variability in future cash flows for forecasted transactions is 54 months.

A detail of Piedmont’s interest rate derivatives outstanding as of September 30, 2020 is as follows:

Interest Rate Derivatives:	Number of Swap Agreements	Associated Debt Instrument	Total Notional Amount (in millions)		Effective Date	Maturity Date
Interest rate swaps	2	$250 Million Unsecured 2018 Term Loan	$	100	3/29/2018	3/31/2025

Piedmont presents its interest rate derivatives on its consolidated balance sheets on a gross basis as interest rate swap assets and interest rate swap liabilities. A detail of Piedmont’s interest rate derivatives on a gross and net basis as of September 30, 2020 and December 31, 2019, respectively, is as follows (in thousands):

Interest rate swaps classified as:	September 30, 2020		December 31, 2019
Gross derivative assets	$	—	$	—
Gross derivative liabilities	(10,618)		(5,121)
Net derivative liability	$	(10,618)	$	(5,121)

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The loss on Piedmont's interest rate derivatives, including previously settled forward swaps, that was recorded in other comprehensive income ("OCI") and the accompanying consolidated statements of income as a component of interest expense for the three and nine months ended September 30, 2020 and 2019, respectively, was as follows (in thousands):

	Three Months Ended				Nine Months Ended
Interest Rate Swaps in Cash Flow Hedging Relationships	September 30, 2020		September 30, 2019		September 30, 2020		September 30, 2019
Amount of loss recognized in OCI	$	(2,443)	$	(1,386)	$	(26,949)	$	(6,874)
Amount of previously recorded gain/(loss) reclassified from OCI into Interest Expense	$	(810)	$	427	$	(989)	$	1,871
Total amount of Interest Expense presented in the consolidated statements of income	$	(12,725)	$	(16,145)	$	(41,942)	$	(46,750)

Piedmont estimates that approximately $2.9 million will be reclassified from OCI as an increase in interest expense over the next twelve months. Piedmont recognized no hedge ineffectiveness on its cash flow hedges during the three and nine months ended September 30, 2020 and 2019, respectively.

Additionally, see Note 6 for fair value disclosures of Piedmont's derivative instruments.

Credit-risk-related Contingent Features

Piedmont has agreements with its derivative counterparties that contain a provision whereby if Piedmont defaults on any of its indebtedness, including default where repayment of the indebtedness has not been accelerated by the lender, then Piedmont could also be declared in default on its derivative obligations. If Piedmont were to breach any of the contractual provisions of the derivative contracts, it could be required to settle its liability obligations under the agreements at their termination value of the estimated fair values plus accrued interest, or approximately $11.0 million as of September 30, 2020. Additionally, Piedmont has rights of set-off under certain of its derivative agreements related to potential termination fees and amounts payable under the agreements, if a termination were to occur.

6.    Fair Value Measurement of Financial Instruments

Piedmont considers its cash and cash equivalents, tenant receivables, restricted cash and escrows, accounts payable and accrued expenses, interest rate swap agreements, and debt to meet the definition of financial instruments. The following table sets forth the carrying and estimated fair value for each of Piedmont’s financial instruments, as well as its level within the GAAP fair value hierarchy, as of September 30, 2020 and December 31, 2019, respectively (in thousands):

	September 30, 2020					December 31, 2019
Financial Instrument	Carrying Value		Estimated Fair Value		Level Within Fair Value Hierarchy	Carrying Value		Estimated Fair Value		Level Within Fair Value Hierarchy
Assets:
Cash and cash equivalents (1)	$	23,958	$	23,958	Level 1	$	13,545	$	13,545	Level 1
Tenant receivables, net of allowance for doubtful accounts (1)	$	11,301	$	11,301	Level 1	$	8,226	$	8,226	Level 1
Restricted cash and escrows (1)	$	1,781	$	1,781	Level 1	$	1,841	$	1,841	Level 1
Liabilities:
Accounts payable and accrued expenses (1)	$	10,874	$	10,874	Level 1	$	50,049	$	50,049	Level 1
Interest rate swaps	$	10,618	$	10,618	Level 2	$	5,121	$	5,121	Level 2
Debt, net	$	1,616,835	$	1,650,928	Level 2	$	1,481,404	$	1,536,687	Level 2

(1)For the periods presented, the carrying value of these financial instruments, net of applicable allowance, approximates estimated fair value due to their short-term maturity.

Piedmont's debt was carried at book value as of September 30, 2020 and December 31, 2019; however, Piedmont's estimate of its fair value is disclosed in the table above. Piedmont uses widely accepted valuation techniques including discounted cash

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flow analysis based on the contractual terms of the debt facilities, including the period to maturity of each instrument, and uses observable market-based inputs for similar debt facilities which have transacted recently in the market. Therefore, the estimated fair values determined are considered to be based on significant other observable inputs (Level 2). Scaling adjustments are made to these inputs to make them applicable to the remaining life of Piedmont's outstanding debt. Piedmont has not changed its valuation technique for estimating the fair value of its debt.

Piedmont’s interest rate swap agreements presented above, and as further discussed in Note 5, are classified as “Interest rate swap” liabilities in the accompanying consolidated balance sheets and were carried at estimated fair value as of September 30, 2020 and December 31, 2019. The valuation of these derivative instruments was determined using widely accepted valuation techniques including discounted cash flow analysis based on the contractual terms of the derivatives, including the period to maturity of each instrument, and uses observable market-based inputs, including interest rate curves and implied volatilities. Therefore, the estimated fair values determined are considered to be based on significant other observable inputs (Level 2). In addition, Piedmont considered both its own and the respective counterparties’ risk of nonperformance in determining the estimated fair value of its derivative financial instruments by estimating the current and potential future exposure under the derivative financial instruments that both Piedmont and the counterparties were at risk for as of the valuation date. The credit risk of Piedmont and its counterparties was factored into the calculation of the estimated fair value of the interest rate swaps; however, as of September 30, 2020 and December 31, 2019, this credit valuation adjustment did not comprise a material portion of the estimated fair value. Therefore, Piedmont believes that any unobservable inputs used to determine the estimated fair values of its derivative financial instruments are not significant to the fair value measurements in their entirety, and does not consider any of its derivative financial instruments to be Level 3 liabilities.

7.    Commitments and Contingencies

Commitments Under Existing Lease Agreements

As a recurring part of its business, Piedmont is typically required under its executed lease agreements to fund tenant improvements, leasing commissions, and building improvements. In addition, certain agreements contain provisions that require Piedmont to issue corporate or property guarantees to provide funding for capital improvements or other financial obligations. As of September 30, 2020, Piedmont had one individually significant unrecorded tenant allowance commitment of approximately $44.0 million for the approximately 20-year, 520,000 square foot renewal and expansion of one of Piedmont's largest tenants, the State of New York, at the 60 Broad Street building in New York City. This commitment will be accrued and capitalized as the related expenditures are incurred.

Contingencies Related to Tenant Audits/Disputes

Certain lease agreements include provisions that grant tenants the right to engage independent auditors to audit their annual operating expense reconciliations. Such audits may result in different interpretations of language in the lease agreements from that made by Piedmont, which could result in requests for refunds of previously recognized tenant reimbursement revenues, resulting in financial loss to Piedmont. There were no reductions in rental and reimbursement revenues related to such tenant audits/disputes during the nine months ended September 30, 2020 or 2019.

Contingencies Related to the COVID-19 Pandemic

During the third quarter of 2020, Piedmont continued to experience the repercussions of the COVID-19 pandemic including forced closures and other restrictions that have had a material adverse effect on the global economy and the regional U.S. economies in which Piedmont operates. Specifically, the pandemic and its impact on the U.S., as well as the global economy, has negatively impacted the trading price of Piedmont's common stock and some of Piedmont's tenants' ability to pay their rent. During the nine months ended September 30, 2020, Piedmont has entered into approximately 60 agreements with various tenants that primarily defer approximately $6.7 million of 2020 rent payments until either the fourth quarter of 2020 or into 2021. Further, Piedmont has established an approximately $4.8 million general reserve for potential collectibility issues; however, there can be no assurances that this amount will be sufficient to cover any future losses of rental income should these tenants be unable to pay back deferred rents when such rents become due.

Piedmont’s financial statements as of and for the nine months ended September 30, 2020 have been prepared in light of these circumstances. Piedmont has continued to follow the policies described in the footnotes to Piedmont’s Annual Report on Form 10-K for the year ended December 31, 2019, including those related to impairment of real estate assets and goodwill and estimates of the likelihood of collectibility of amounts due from tenants.

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While the long-term impacts of the COVID-19 pandemic remain unknown, a prolonged economic downturn or recession resulting from the pandemic could adversely affect many of Piedmont's tenants which could, in turn, adversely impact Piedmont's business, financial condition and results of operations. Piedmont will continue to work closely with its tenants and address their concerns on a case-by-case basis, seeking solutions that address immediate cash flow interruptions while maintaining long term lease obligations.

8.    Assets Held for Sale and Property Disposition

As of September 30, 2020, no properties met the criteria for held for sale classification; however, as of March 31, 2020, the 1901 Market Street building in Philadelphia, Pennsylvania, which sold June 2020, met the criteria for held for sale classification. Consequently its assets and liabilities as of December 31, 2019 were presented as held for sale for comparability in the accompanying consolidated balance sheets. In conjunction with the sale of 1901 Market Street, Piedmont recognized net sales proceeds of approximately $350.8 million resulting in gain on sale of real estate assets of approximately $191.0 million. During the nine months ended September 30, 2019, Piedmont reduced The Dupree building's carrying value to reflect its fair value, estimated based on the net contract price negotiated with an unrelated, third-party purchaser, and recognized an impairment loss of approximately $2.0 million. Piedmont closed on the sale of The Dupree building in September 2019.

	September 30, 2020		December 31, 2019
Real estate assets held for sale, net:
Land	$	—	$	20,829
Building and improvements, less accumulated depreciation of $0 and $66,823 as of September 30, 2020 and December 31, 2019, respectively	—		112,287
Intangible lease assets, less accumulated amortization of $0 and $27,438 as of September 30, 2020 and December 31, 2019, respectively	—		6,574
Total real estate assets held for sale, net	$	—	$	139,690
Other assets held for sale, net:
Straight-line rent receivables	$	—	$	18,776
Deferred lease costs, less accumulated amortization of $0 and $34,957 as of September 30, 2020 and December 31, 2019, respectively	—		9,425
Total other assets held for sale, net	$	—	$	28,201
Other liabilities held for sale:
Intangible lease liabilities, less accumulated amortization of $0 and $31,959 as of September 30, 2020 and December 31, 2019, respectively	$	—	$	7,657

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9.    Stock Based Compensation

The Compensation Committee of Piedmont's Board of Directors has periodically granted deferred stock award units to all of Piedmont's employees and independent directors. Most employee awards are time-vested and typically vest ratably over a multi-year period and independent director awards vest over one year.

Certain management employees' long-term equity incentive program is split equally between the time-vested award units and a multi-year performance share program whereby the actual awards are contingent upon Piedmont's total stockholder return ("TSR") relative to a peer group of office REITs' TSR. The long-term equity incentives for these certain employees, as well as the peer group, is predetermined by the Board of Directors, advised by an outside compensation consultant. Any shares earned are awarded at the end of the multi-year performance period and vest upon award. The fair values of the multi-year performance share awards are estimated using a Monte Carlo valuation method.

A rollforward of Piedmont's equity based award activity for the nine months ended September 30, 2020 is as follows:

	Shares	Weighted-Average Grant Date Fair Value
Unvested and Potential Stock Awards as of December 31, 2019	1,045,020	$	25.15
Deferred Stock Awards Granted	242,586	$	22.39
Increase in Estimated Potential Share Award based on TSR Performance	26,586	$	27.47
Performance Stock Awards Vested	(153,368)	$	30.45
Deferred Stock Awards Vested	(228,478)	$	21.05
Deferred Stock Awards Forfeited	(6,979)	$	21.82
Unvested and Potential Stock Awards as of September 30, 2020	925,367	$	24.07

The following table provides additional information regarding stock award activity during the three and nine months ended September 30, 2020 and 2019, respectively (in thousands, except per share amounts):

	Three Months Ended				Nine Months Ended
	September 30, 2020		September 30, 2019		September 30, 2020		September 30, 2019
Weighted-Average Grant Date Fair Value per share of Deferred Stock Granted During the Period	$	—	$	—	$	22.39	$	21.02
Total Grant Date Fair Value of Deferred Stock Vested During the Period	$	200	$	—	$	4,808	$	8,658
Share-based Liability Awards Paid During the Period (1)	$	—	$	3,444	$	4,116	$	6,683

(1)Amounts reflect the issuance of performance share awards related to the 2017-19 and 2016-18 Performance Share Plans during the nine months ended September 30, 2020 and 2019, respectively, as well as performance share award liabilities settled in cash in July 2019 for retirement and separation associated with the senior management transition on June 30, 2019.

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A detail of Piedmont’s outstanding stock awards as of September 30, 2020 is as follows:

Date of grant	Type of Award	Net Shares Granted (1)	Grant Date Fair Value		Vesting Schedule	Unvested Shares
May 17, 2018	Deferred Stock Award	250,680	$	17.84	Of the shares granted, 25% vested on the date of grant, and 25% vested or will vest on May 17, 2019, 2020, and 2021, respectively.	52,895
May 17, 2018	Fiscal Year 2018-2020 Performance Share Program	—	$	23.52	Shares awarded, if any, will vest immediately upon determination of award in 2021.	200,674	(2)
May 3, 2019	Deferred Stock Award	274,998	$	21.04	Of the shares granted, 25% vested on the date of grant, and 25% vested or will vest on May 3, 2020, 2021, and 2022, respectively.	134,173
May 3, 2019	Fiscal Year 2019-2021 Performance Share Program	—	$	29.43	Shares awarded, if any, will vest immediately upon determination of award in 2022.	181,527	(2)
February 19, 2020	Deferred Stock Award	178,309	$	24.41	Of the shares granted, 25% vested on the date of grant, and 25% vested or will vest on February 19, 2021, 2022, and 2023, respectively.	143,973
March 19, 2020	Fiscal Year 2020-2022 Performance Share Program	—	$	25.83	Shares awarded, if any, will vest immediately upon determination of award in 2023.	166,345	(2)
May 13, 2020	Deferred Stock Award-Board of Directors	45,780	$	13.76	Of the shares granted, 100% will vest by May 13, 2021.	45,780
Total						925,367

(1)Amounts reflect the total original grant to employees and independent directors, net of shares surrendered upon vesting to satisfy required minimum tax withholding obligations through September 30, 2020.

(2)Estimated based on Piedmont's cumulative TSR for the respective performance period through September 30, 2020. Share estimates are subject to change in future periods based upon Piedmont's relative performance compared to its peer group of office REITs' TSR.

During the three months ended September 30, 2020 and 2019, Piedmont recognized approximately $1.4 million and $3.8 million, respectively, of compensation expense related to stock awards, all of which is related to the amortization of unvested deferred shares and the fair value adjustment to performance shares. During the nine months ended September 30, 2020 and 2019, Piedmont recognized approximately $7.0 million and $12.0 million, respectively, of compensation expense related to stock awards of which $5.8 million and $10.5 million is related to the amortization of unvested deferred shares and the fair value adjustment to performance shares. During the nine months ended September 30, 2020, a net total of 245,354 shares were issued to employees and directors. As of September 30, 2020, approximately $7.5 million of unrecognized compensation cost related to unvested deferred stock awards remained, which Piedmont will record in its consolidated statements of income over a weighted-average vesting period of approximately one year.

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10.    Supplemental Disclosures for the Statement of Consolidated Cash Flows

Certain non-cash investing and financing activities for the nine months ended September 30, 2020 and 2019, (in thousands) are outlined below:

	Nine Months Ended
	September 30, 2020		September 30, 2019
Accrued capital expenditures and deferred lease costs	$	24,035	$	29,828
Change in accrued dividends and discount on dividend reinvestments	$	(26,427)	$	(26,972)
Change in accrued share repurchases as part of an announced plan	$	—	$	(4,417)
Accrued deferred financing costs	$	130	$	—
Accrued stock issuance costs	$	—	$	441

The following table provides a reconciliation of cash, cash equivalents, and restricted cash and escrows as presented in the accompanying consolidated statements of cash flows for the nine months ended September 30, 2020 and 2019, to the consolidated balance sheets for the respective period (in thousands):

	2020		2019
Cash and cash equivalents as of January 1, 2020 and 2019, respectively	$	13,545	$	4,571
Restricted cash and escrows as of January 1, 2020 and 2019, respectively	1,841		1,463
Cash, cash equivalents, and restricted cash and escrows, beginning of period, as presented in the accompanying consolidated statement of cash flows	$	15,386	$	6,034
Cash and cash equivalents as of September 30, 2020 and 2019, respectively	$	23,958	$	10,284
Restricted cash and escrows as of September 30, 2020 and 2019, respectively	1,781		1,820
Cash, cash equivalents, and restricted cash and escrows, end of period, as presented in the accompanying consolidated statement of cash flows	$	25,739	$	12,104

Amounts in restricted cash and escrows typically represent escrow accounts for the payment of real estate taxes which are required under certain of Piedmont's debt agreements; earnest money deposited by a buyer to secure the purchase of one of Piedmont's properties; or security or utility deposits held for tenants as a condition of their lease agreement.

11.    Earnings Per Share

There are no adjustments to “Net income applicable to Piedmont” for the diluted earnings per share computations.

Net income per share-basic is calculated as net income available to common stockholders divided by the weighted average number of common shares outstanding during the period. Net income per share-diluted is calculated as net income available to common stockholders divided by the diluted weighted average number of common shares outstanding during the period, including unvested deferred stock awards. Diluted weighted average number of common shares reflects the potential dilution under the treasury stock method that would occur if the remaining unvested deferred stock awards vested and resulted in additional common shares outstanding. Unvested deferred stock awards which are determined to be anti-dilutive are not included in the calculation of diluted weighted average common shares. For the three months ended September 30, 2020 and 2019, Piedmont calculated and excluded weighted average outstanding anti-dilutive shares of 310,425 and 344, respectively, and for the nine months ended September 30, 2020 and 2019, Piedmont calculated and excluded weighted average outstanding anti-dilutive shares of 262,165 and 134,221, respectively.

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The following table reconciles the denominator for the basic and diluted earnings per share computations shown on the consolidated statements of income for the three and nine months ended September 30, 2020 and 2019, respectively (in thousands):

	Three Months Ended		Nine Months Ended
	September 30, 2020	September 30, 2019	September 30, 2020	September 30, 2019
Weighted-average common shares – basic	126,029	125,783	125,955	125,684
Plus: Incremental weighted-average shares from time-vested deferred and performance stock awards	356	457	347	506
Weighted-average common shares – diluted	126,385	126,240	126,302	126,190

12.    Subsequent Events

Fourth Quarter Dividend Declaration

On October 28, 2020, the Board of Directors of Piedmont declared a dividend for the fourth quarter of 2020 in the amount of $0.21 per common share outstanding to stockholders of record as of the close of business on November 27, 2020. Such dividend will be paid on January 4, 2021.

Subsequent to September 30, 2020, Piedmont sold a portfolio of three assets located in New Jersey: 600 Corporate Drive, located in Lebanon, New Jersey; and 200 and 400 Bridgewater Crossing, located in Bridgewater, New Jersey, for approximately $130 million, or $176 per square foot. Upon completion of the sale, Piedmont no longer owns properties in New Jersey.

Also subsequent to September 30, 2020, Piedmont acquired the 222 South Orange Avenue building, an approximately 127,000 square foot office building connected to Piedmont's 200 South Orange Avenue asset located in downtown Orlando, Florida, for $20 million, or $157 per square foot. The 222 South Orange Avenue building is located along the Orange Avenue entrance to Piedmont's existing 200 South Orange Avenue property, sharing several physical connection points, including an atrium. Piedmont plans to immediately begin a redevelopment of the property to reposition the asset to a standard consistent with 200 South Orange Avenue.

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

The following discussion and analysis should be read in conjunction with the accompanying consolidated financial statements and notes thereto of Piedmont Office Realty Trust, Inc. (“Piedmont,” "we," "our," or "us"). See also “Cautionary Note Regarding Forward-Looking Statements” preceding Part I, as well as the consolidated financial statements and accompanying notes thereto and Management’s Discussion and Analysis of Financial Condition and Results of Operations included in our Annual Report on Form 10-K for the year ended December 31, 2019.

During the third quarter of 2020, we continued to experience the repercussions of the COVID-19 pandemic including forced closures and other restrictions that have had a material adverse effect on the global economy and the regional U.S. economies in which Piedmont operates. Specifically, the pandemic and its impact on the U.S., as well as the global economy, has negatively impacted the trading price of Piedmont's common stock and some of Piedmont's tenants' ability to pay their rent. During the nine months ended September 30, 2020, we have entered into approximately 60 agreements with various tenants that primarily defer approximately $6.7 million of 2020 rent payments until either the fourth quarter of 2020 or into 2021. Further, Piedmont has established an approximately $4.8 million general reserve for potential collectibility issues; however, there can be no assurances that this amount will be sufficient to cover any future losses of rental income should these tenants be unable to pay back deferred rents when such rents become due.

All of our properties remain open and fully operational for each tenant to utilize as they deem appropriate. Given our low-leverage operating model of long-term leases to creditworthy tenants, to date the COVID-19 disruption has not materially impacted our financial condition or results of operations, our overall liquidity position and outlook, or caused material impairments in our portfolio of operating properties. In response to the COVID-19 pandemic, we have completed stress testing of our various financial covenants assuming decreases in rental and parking income as appropriate and determined that we are still well margined with all our covenant ratios. During the third quarter, we collected approximately 99% of our billed contractual rents on a monthly basis.

While the long-term impacts of the COVID-19 pandemic remain unknown, a prolonged economic downturn or recession resulting from the pandemic could adversely affect many of Piedmont's tenants which could, in turn, adversely impact Piedmont's business, financial condition and results of operations. Piedmont will continue to work closely with its tenants and address their concerns on a case-by-case basis, seeking solutions that address immediate cash flow interruptions while maintaining long term lease obligations.

Liquidity and Capital Resources

We intend to use cash on hand, cash flows generated from the operation of our properties, net proceeds from the disposition of select properties, and proceeds from our $500 Million Unsecured 2018 Line of Credit as our primary sources of immediate liquidity. During the third quarter of 2020, we issued $300 million of unsecured senior notes, using the proceeds to fully repay the $300 million unsecured term loan in advance of its March 2021 maturity. As a result, we had approximately $24 million of cash on hand and the full $500 million line of credit capacity was available as of September 30, 2020. While we have experienced periods of interest rate volatility and movements which have made obtaining financing or refinancing debt obligations more challenging during 2020, when necessary we may seek secured or unsecured borrowings from third party lenders or issue securities as additional sources of capital. The availability and attractiveness of terms for these additional sources of capital will be highly dependent on market conditions at the time.

Our most consistent use of capital has historically been, and we believe will continue to be, to fund capital expenditures for our existing portfolio of properties. During the nine months ended September 30, 2020 and 2019 we incurred the following types of capital expenditures (in thousands):

	Nine Months Ended
	September 30, 2020		September 30, 2019
Capital expenditures for redevelopment/renovations	$	15,071	$	10,313
Other capital expenditures, including building and tenant improvements	64,936		47,055
Total capital expenditures (1)	$	80,007	$	57,368

(1)Of the total amounts paid, approximately $1.1 million and $2.0 million relates to soft costs such as capitalized interest, payroll, and other general and administrative expenses for the nine months ended September 30, 2020 and 2019, respectively.

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"Capital expenditures for redevelopment/renovations" during the nine months ended September 30, 2020 primarily related to a redevelopment project to upgrade amenities at our 200 South Orange building in Orlando, Florida, as well as a redevelopment master plan project to upgrade common areas, amenities, and parking, at our Galleria buildings in Atlanta, Georgia. Expenditures during the nine months ended September 30, 2019 primarily related to a redevelopment project to upgrade amenities at our US Bancorp building in Minneapolis, Minnesota, as well as a redevelopment project to upgrade common areas, amenities, and parking, at our Two Pierce Place building in Itasca, Illinois.

"Other capital expenditures, including building and tenant improvements" include all other capital expenditures during the period and are typically comprised of tenant and building improvements necessary to lease, maintain, or provide enhancements to our existing portfolio of office properties.

Given that our operating model frequently results in leases for large blocks of space to credit-worthy tenants, our leasing success can result in capital outlays which vary from one reporting period to another based upon the specific leases executed. For example, for leases executed during the nine months ended September 30, 2020, we committed to spend approximately $5.90 per square foot per year of lease term for tenant improvement allowances and lease commissions (net of expiring lease commitments) as compared to $5.10 (net of expired lease commitments) for the nine months ended September 30, 2019. As of September 30, 2020, we had one individually significant unrecorded tenant allowance commitment of approximately $44.0 million related to the approximately 20-year, 520,000 square foot renewal and expansion of the State of New York's lease at our 60 Broad Street building in New York City that was executed during the fourth quarter of 2019.

In addition to the amounts that we have already committed to as a part of executed leases, we also anticipate continuing to incur similar market-based tenant improvement allowances and leasing commissions in conjunction with procuring future leases for our existing portfolio of properties. Both the timing and magnitude of expenditures related to future leasing activity can vary due to a number of factors, including being highly dependent on the competitive market conditions at the time of lease negotiations of the particular office market within which a given lease is signed. In particular, we are currently in the process of negotiating the renewal of a majority of the current 313,000 square foot lease with the City of New York, at our 60 Broad Street building. Depending on the length of the lease term, we anticipate spending significant capital for market-based tenant improvement allowances and leasing commissions over the next several years associated with the renewal.

There are other uses of capital that may arise as part of our typical operations. Subject to the identification and availability of attractive investment opportunities and our ability to consummate such acquisitions on satisfactory terms, acquiring new assets consistent with our investment strategy could also be a significant use of capital. We may also use capital resources to repurchase additional shares of our common stock under our stock repurchase program when we believe the stock is trading disparately from our peers and at a significant discount to net asset value. As of September 30, 2020, we had approximately $200 million of board-authorized capacity remaining for future stock repurchases. Finally, although we have no scheduled debt maturities until the third quarter of 2021, we may use capital to repay debt obligations when we deem it prudent to refinance various obligations.

The amount and form of payment (cash or stock issuance) of future dividends to be paid to our stockholders will continue to be largely dependent upon (i) the amount of cash generated from our operating activities; (ii) our expectations of future cash flows; (iii) our determination of near-term cash needs for debt repayments, development projects, and selective acquisitions of new properties; (iv) the timing of significant expenditures for tenant improvements, building redevelopment projects, and general property capital improvements; (v) long-term dividend payout ratios for comparable companies; (vi) our ability to continue to access additional sources of capital, including potential sales of our properties; and (vii) the amount required to be distributed to maintain our status as a REIT. With the fluctuating nature of cash flows and expenditures, we may periodically borrow funds on a short-term basis to cover timing differences in cash receipts and cash disbursements.

Results of Operations

Overview

Net income applicable to common stockholders for the three months ended September 30, 2020 was $8.9 million, or $0.07 per diluted share, as compared with net income applicable to common stockholders of $8.4 million, or $0.07 per diluted share, for the three months ended September 30, 2019. The increase in net income for the three months ended September 30, 2020 was primarily a result of interest expense savings due to lower interest rates than the prior year, partially offset by a reduction in revenue as a result of lower reimbursable expenses and lower parking revenues at certain properties either as a result of the sale of the property or lower utilization as a result of the COVID-19 pandemic.

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Comparison of the three months ended September 30, 2020 versus the three months ended September 30, 2019

Income from Continuing Operations

The following table sets forth selected data from our consolidated statements of income for the three months ended September 30, 2020 and 2019, respectively, as well as each balance as a percentage of total revenues for the same periods presented (dollars in millions):

	September 30, 2020		% of Revenues		September 30, 2019		% of Revenues		Variance
Revenue:
Rental and tenant reimbursement revenue	$	128.3			$	130.6			$	(2.3)
Property management fee revenue	0.7				0.4				0.3
Other property related income	2.7				4.4				(1.7)
Total revenues	131.7		100	%	135.4		100	%	(3.7)
Expense:
Property operating costs	53.3		40	%	54.6		40	%	(1.3)
Depreciation	28.2		21	%	27.1		20	%	1.1
Amortization	23.0		17	%	19.5		14	%	3.5
Impairment loss on real estate assets	—		—	%	2.0		2	%	(2.0)
General and administrative	5.5		4	%	8.0		6	%	(2.5)
	110.0				111.2				(1.2)
Other income (expense):
Interest expense	(12.7)		10	%	(16.1)		12	%	3.4
Other income	0.3		—	%	0.3		—	%	—
Loss on early extinguishment of debt	—		—	%	—		—	%	—
Gain on sale of real estate assets	(0.4)		—	%	—		—	%	(0.4)
Net income	$	8.9	7	%	$	8.4	6	%	$	0.5

Revenue

Rental and tenant reimbursement revenue decreased approximately $2.3 million for the three months ended September 30, 2020, as compared to the same period in the prior year. Tenant reimbursement revenue decreased approximately $5.2 million compared to the prior period due mainly to lower recoverable operating expenses. The decrease was partially offset by a $2.9 million increase in rental revenue due mainly to new leasing activity, most notably at our Enclave Place building in Houston, Texas and our 60 Broad Street building in New York City.

Property management fee revenue increased approximately $0.3 million for the three months ended September 30, 2020 as compared to the same period in the prior year. The increase was primarily due to fees received for managing the 500 West Monroe building which was sold in October 2019, but property management was retained by Piedmont.

Other property related income decreased approximately $1.7 million for the three months ended September 30, 2020 as compared to the same period in the prior year. The decrease is primarily attributable to decreased parking revenue during the current period as a result of the sale of the 500 West Monroe Street building with its 1,300-space parking garage during the fourth quarter of 2019, as well as lower transient parking utilization due to forced closures and restrictions in response to the COVID-19 pandemic.

Expense

Property operating costs decreased approximately $1.3 million for the three months ended September 30, 2020, as compared to the same period in the prior year with increases due to net acquisition activity subsequent to July 1, 2019 more than offset by decreased utility and janitorial costs due to the decreased usage of building utilities and services as a result of the COVID-19 pandemic.

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Depreciation expense increased approximately $1.1 million for the three months ended September 30, 2020 as compared to the same period in the prior year. The increase was primarily due to depreciation on additional building and tenant improvements placed in service subsequent to July 1, 2019 across our existing portfolio of properties.

Amortization expense increased approximately $3.5 million for the three months ended September 30, 2020 as compared to the same period in the prior year. Approximately $6.4 million of the increase was due to net acquisition activity subsequent to July 1, 2019. This increase was partially offset by certain lease intangible assets sold or other deferred costs at our existing properties becoming fully amortized as a result of the expiration of leases subsequent to July 1, 2019.

During the three months ended September 30, 2019, we recognized an impairment loss on real estate assets of approximately $2.0 million in conjunction with the decision to sell The Dupree building in Atlanta, Georgia. The building was sold in September 2019.

General and administrative expense decreased approximately $2.5 million for the three months ended September 30, 2020 as compared to the same period in the prior year primarily due to decreased accruals for expenses associated with potential performance-based equity compensation.

Other Income (Expense)

Interest expense decreased approximately $3.4 million for the three months ended September 30, 2020 as compared to the same period in the prior year primarily as a result of lower interest rates during the current year as well as the repayment of the $160 million mortgage debt on our 1901 Market Street building in June 2020. This variance was partially offset by a decrease in capitalized interest in the current year, as compared to the same period in the prior year, of approximately $0.4 million.

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Comparison of the accompanying consolidated statements of income for the nine months ended September 30, 2020 versus the nine months ended September 30, 2019

Income from Continuing Operations

The following table sets forth selected data from our consolidated statements of income for the nine months ended September 30, 2020 and 2019, respectively, as well as each balance as a percentage of total revenues for the same period presented (dollars in millions):

	September 30, 2020		% of Revenues		September 30, 2019		% of Revenues		Variance
Revenue:
Rental and tenant reimbursement revenue	$	391.7			$	382.2			$	9.5
Property management fee revenue	2.1				2.8				(0.7)
Other property related income	9.7				14.0				(4.3)
Total revenues	403.5		100	%	399.0		100	%	4.5
Expense:
Property operating costs	159.7		40	%	158.8		40	%	0.9
Depreciation	83.3		21	%	80.0		20	%	3.3
Amortization	71.0		17	%	55.7		14	%	15.3
Impairment loss on real estate assets	—		—	%	2.0		1	%	(2.0)
General and administrative	20.0		5	%	29.7		6	%	(9.7)
	334.0				326.2				7.8
Other income (expense):
Interest expense	(41.9)		10	%	(46.8)		12	%	4.9
Other income	0.8		—	%	1.3		—	%	(0.5)
Loss on early extinguishment of debt	(9.3)		2	%	—		—	%	(9.3)
Gain on sale of real estate assets	191.0		47	%	39.5		10	%	151.5
Net income	$	210.1	52	%	$	66.8	17	%	$	143.3

Revenue

Rental and tenant reimbursement revenue increased approximately $9.5 million for the nine months ended September 30, 2020 as compared to the same period in the prior year. The favorable variance was primarily due to net acquisition activity subsequent to January 1, 2019 and new leases commencing at higher overall rental rates. This was partially offset by the recognition of charges against rental revenue for tenant-specific and general collectibility risks related to forced closures and restrictions in response to the COVID-19 pandemic during the nine months ended September 30, 2020. Additionally, tenant reimbursements decreased due to lower physical occupancy at our properties, resulting in lower recoverable operating expenses, such as utilities and janitorial services, as compared to the same period in the prior year.

Property management fee revenue decreased approximately $0.7 million for the nine months ended September 30, 2020 as compared to the same period in the prior year. The decrease was primarily due to construction management fees received in the prior period from one of our former Independence Square properties, with such fees varying from period-to-period due to the variability of construction activity.

Other property related income consists primarily of parking revenue and such revenue decreased approximately $4.3 million for the nine months ended September 30, 2020 as compared to the same period in the prior year primarily due to the sale of the 500 West Monroe Street building with its 1,300-space parking garage during the fourth quarter of 2019, as well as lower transient parking utilization at our buildings during 2020 as a result of the COVID-19 pandemic. These decreases were partially offset by new parking revenue associated with acquisitions consummated subsequent to January 1, 2019.

Expense

Property operating costs increased approximately $0.9 million for the nine months ended September 30, 2020 as compared to the

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same period in the prior year. This variance was primarily due to net acquisition activity subsequent to January 1, 2019, partially offset by lower costs due to the decreased usage of building utilities and services as a result of the COVID-19 pandemic.

Depreciation expense increased approximately $3.3 million for the nine months ended September 30, 2020 as compared to the same period in the prior year. The increase was due primarily to additional building and tenant improvements placed in service subsequent to January 1, 2019, partially offset by a net decrease in depreciation associated with dispositions subsequent to January 1, 2019.

Amortization expense increased approximately $15.3 million for the nine months ended September 30, 2020 as compared to the same period in the prior year. Approximately $20.8 million of the increase was due to net acquisition activity subsequent to January 1, 2019. This increase was partially offset by certain lease intangible assets or other deferred costs at our existing properties becoming fully amortized as a result of the expiration of leases subsequent to January 1, 2019.

During the nine months ended September 30, 2019, we recognized an impairment loss on real estate assets of approximately $2.0 million in conjunction with the decision to sell The Dupree building in Atlanta, Georgia. The building was sold in September 2019.

General and administrative expenses decreased approximately $9.7 million for the nine months ended September 30, 2020 as compared to the nine months ended September 30, 2019 with the current period reflecting decreased accruals for stock based compensation and the prior period reflecting certain one-time expenses associated with the senior management transition that took place on June 30, 2019, resulting in lower compensation at the executive level in the current period.

Other Income (Expense)

Interest expense decreased approximately $4.9 million for the nine months ended September 30, 2020 as compared to the same period in the prior year primarily as a result of lower interest rates during the current year as well as the repayment of the $160 million mortgage debt on our 1901 Market Street building in June 2020. This variance was partially offset by a decrease in capitalized interest in the current year, as compared to the same period in the prior year, of approximately $1.0 million.

The loss on early extinguishment of debt during the nine months ended September 30, 2020 was associated with the early repayment of the $160 Million Fixed-Rate Loan which was collateralized by the 1901 Market Street building. The property was sold during the nine months ended September 30, 2020. The loss was comprised of a prepayment penalty and unamortized debt issuance costs and discounts associated with the loan.

Gain on sale of real estate assets during the nine months ended September 30, 2020 includes a gain of approximately $191.0 million recognized on the sale of the 1901 Market Street building in Philadelphia, Pennsylvania. Gain on sale of real estate assets during the nine months ended September 30, 2019 includes an approximate $33.2 million gain recognized on the sale of the One Independence Square building in Washington, D.C., as well as an approximate $6.1 million adjustment of the gain on sale for the Two Independence Square building related to the reimbursement of certain previously disputed tenant improvement overages.

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Issuer and Guarantor Financial Information

During the years ended December 31, 2013 and 2014, and during the nine months ended September 30, 2020, Piedmont, through its wholly-owned subsidiary Piedmont Operating Partnership, LP ("Piedmont OP" or the "Issuer"), issued senior unsecured notes payable of $350 million, $400 million, and $300 million, respectively (the "Notes"). The Notes are senior unsecured obligations of Piedmont OP and rank equally in right of payment with all of Piedmont OP's other existing and future senior unsecured indebtedness and are effectively subordinated in right of payment to all of Piedmont OP’s existing and future mortgage indebtedness and other secured indebtedness (to the extent of the value of the collateral securing such indebtedness) and to all existing and future indebtedness and other liabilities of Piedmont OP’s subsidiaries, whether secured or unsecured.

The Notes are fully and unconditionally guaranteed by Piedmont Office Realty Trust, Inc. (the "Guarantor"), the parent entity that consolidates Piedmont OP and all other subsidiaries. By execution of the guarantee, the Guarantor guarantees to each holder of the Notes that the principal and interest on the Notes will be paid in full when due, whether at the maturity dates of the respective loans, or upon acceleration, upon redemption, or otherwise, and interest on overdue principal and interest on any overdue interest, if any, on the Notes and all other obligations of the Issuer to the holders of the Notes will be promptly paid in full. The Guarantor's guarantee of the Notes is its senior unsecured obligation and ranks equally in right of payment with all of the Guarantor's other existing and future senior unsecured indebtedness and guarantees. The Guarantor’s guarantee of the notes is effectively subordinated in right of payment to all existing and future mortgage indebtedness and other secured indebtedness and secured guarantees of the Guarantor (to the extent of the value of the collateral securing such indebtedness and guarantees); and all existing and future indebtedness and other liabilities, whether secured or unsecured, of the Guarantor’s subsidiaries.

In the event of the bankruptcy, liquidation, reorganization or other winding up of Piedmont OP or the Guarantor, assets that secure any of their respective secured indebtedness and other secured obligations will be available to pay their respective obligations under the Notes or the guarantee, as applicable, and their other respective unsecured indebtedness and other unsecured obligations only after all of their respective indebtedness and other obligations secured by those assets have been repaid in full.

The non-Guarantors are separate and distinct legal entities and have no obligation, contingent or otherwise, to pay any amounts due pursuant to the Notes, or to make any funds available therefore, whether by dividends, loans, distributions or other payments.

Pursuant to Rule 13-01 of Regulation S-X, Guarantors and Issuers of Guaranteed Securities Registered or Being Registered, the following tables present summarized financial information for Piedmont OP as Issuer and Piedmont Office Realty Trust, Inc. as Guarantor on a combined basis after elimination of (i) intercompany transactions and balances among the Issuer and the Guarantor and (ii) equity in earnings from and investments in any subsidiary that is a non-Guarantor (in thousands):

Combined Balances of Piedmont OP and Piedmont Office Realty Trust, Inc. as Issuer and Guarantor, respectively	As of September 30, 2020		As of  December 31, 2019
Due from non-guarantor subsidiary	$	810	$	810
Total assets	$	362,594	$	364,734
Total liabilities	$	1,617,051	$	1,343,881
			For the Nine Months Ended September 30, 2020
Total revenues			$	31,486
Net loss			$	(37,209)

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Funds From Operations ("FFO"), Core Funds From Operations ("Core FFO"), and Adjusted Funds From Operations

(“AFFO”)

Net income calculated in accordance with GAAP is the starting point for calculating FFO, Core FFO, and AFFO. These metrics are non-GAAP financial measures and should not be viewed as an alternative measurement of our operating performance to net income. Management believes that accounting for real estate assets in accordance with GAAP implicitly assumes that the value of real estate assets diminishes predictably over time. Since real estate values have historically risen or fallen with market conditions, many industry investors and analysts have considered the presentation of operating results for real estate companies that use historical cost accounting to be insufficient alone. As a result, we believe that the additive use of FFO, Core FFO, and AFFO, together with the required GAAP presentation, provides a more complete understanding of our performance relative to our competitors and a more informed and appropriate basis on which to make decisions involving operating, financing, and investing activities.

We calculate FFO in accordance with the current National Association of Real Estate Investment Trusts ("NAREIT") definition. NAREIT currently defines FFO as follows: Net income (computed in accordance with GAAP), excluding gains or losses from sales of depreciable real estate and impairment charges (including our proportionate share of gains from sales of property related to investments in unconsolidated joint ventures), plus the add back of depreciation and amortization on real estate assets (including our proportionate share of depreciation and amortization related to investments in unconsolidated joint ventures). Other REITs may not define FFO in accordance with the NAREIT definition, or may interpret the current NAREIT definition differently than we do; therefore, our computation of FFO may not be comparable to such other REITs.

We calculate Core FFO by starting with FFO, as defined by NAREIT, and adjusting for gains or losses on the extinguishment of swaps and/or debt, acquisition-related expenses, and any significant non-recurring or infrequent items. Core FFO is a non-GAAP financial measure and should not be viewed as an alternative to net income calculated in accordance with GAAP as a measurement of our operating performance. We believe that Core FFO is helpful to investors as a supplemental performance measure because it excludes the effects of certain infrequent or non-recurring items which can create significant earnings volatility, but which do not directly relate to our core recurring business operations. As a result, we believe that Core FFO can help facilitate comparisons of operating performance between periods and provides a more meaningful predictor of future earnings potential. Other REITs may not define Core FFO in the same manner as us; therefore, our computation of Core FFO may not be comparable to that of other REITs.

We calculate AFFO by starting with Core FFO and adjusting for non-incremental capital expenditures and acquisition-related costs and then adding back non-cash items including: non-real estate depreciation, straight-line rent adjustments and fair value lease adjustments, non-cash components of interest expense and compensation expense, and by making similar adjustments for unconsolidated joint ventures. AFFO is a non-GAAP financial measure and should not be viewed as an alternative to net income calculated in accordance with GAAP as a measurement of our operating performance. We believe that AFFO is helpful to investors as a meaningful supplemental comparative performance measure of our ability to make incremental capital investments in new properties or enhancements to existing properties that improve revenue growth potential. Other REITs may not define AFFO in the same manner as us; therefore, our computation of AFFO may not be comparable to that of other REITs.

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Reconciliations of net income to FFO, Core FFO, and AFFO are presented below (in thousands except per share amounts):

	Three Months Ended								Nine Months Ended
	September 30, 2020		Per Share(1)		September 30, 2019		Per Share(1)		September 30, 2020		Per Share(1)		September 30, 2019		Per Share(1)
GAAP net income applicable to common stock	$	8,943	$	0.07	$	8,422	$	0.07	$	210,079	$	1.66	$	66,783	$	0.53
Depreciation of real estate assets	27,960		0.22		26,909		0.21		82,384		0.65		79,346		0.63
Amortization of lease-related costs	22,976		0.18		19,491		0.15		70,930		0.56		55,622		0.44
Impairment loss on real estate assets	—		—		1,953		0.02		—		—		1,953		0.01
(Gain)/loss on sale of real estate assets	340		0.01		(32)		—		(191,032)		(1.51)		(39,370)		(0.31)
NAREIT Funds From Operations applicable to common stock	$	60,219	$	0.48	$	56,743	$	0.45	$	172,361	$	1.36	$	164,334	$	1.30
Adjustments:
Retirement and separation expenses associated with senior management transition in June 2019	—		—		—		—		—		—		3,175		0.03
Loss on early extinguishment of debt	—		—		—		—		9,336		0.08		—		—
Core Funds From Operations applicable to common stock	$	60,219	$	0.48	$	56,743	$	0.45	$	181,697	$	1.44	$	167,509	$	1.33
Adjustments:
Amortization of debt issuance costs, fair market value adjustments on notes payable, and discounts on debt	931				526				2,180				1,574
Depreciation of non real estate assets	286				214				930				634
Straight-line effects of lease revenue	(6,315)				(1,531)				(20,378)				(7,437)
Stock-based compensation adjustments	1,336				(3,015)				4,281				1,949
Net effect of amortization of above and below-market in-place lease intangibles	(3,240)				(1,923)				(9,517)				(6,009)
Non-incremental capital expenditures (2)	(15,611)				(14,352)				(58,062)				(27,410)
Adjusted Funds From Operations applicable to common stock	$	37,606			$	36,662			$	101,131			$	130,810
Weighted-average shares outstanding – diluted	126,385				126,240				126,302				126,190

(1)Based on weighted average shares outstanding – diluted.

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(2)We define non-incremental capital expenditures as capital expenditures of a recurring nature related to tenant improvements, leasing commissions, and building capital that do not incrementally enhance the underlying assets' income generating capacity. Tenant improvements, leasing commissions, building capital and deferred lease incentives incurred to lease space that was vacant at acquisition, leasing costs for spaces vacant for greater than one year, leasing costs for spaces at newly acquired properties for which in-place leases expire shortly after acquisition, improvements associated with the expansion of a building, and renovations that either enhance the rental rates of a building or change the property's underlying classification, such as from a Class B to a Class A property, are excluded from this measure. Non-incremental capital expenditures for the nine months ended September 30, 2020 includes the significant leasing commission of approximately $16 million for the approximately 20-year, 520,000-square-foot renewal and expansion of the State of New York's lease at our 60 Broad Street building in New York City that was executed during the fourth quarter of 2019.

Property and Same Store Net Operating Income

Property Net Operating Income ("Property NOI") is a non-GAAP measure which we use to assess our operating results. We calculate Property NOI beginning with Net income (computed in accordance with GAAP) before interest, income-related federal, state, and local taxes, depreciation and amortization and removing any impairment losses, gains or losses from sales of any property and other significant infrequent items that create volatility within our earnings and make it difficult to determine the earnings generated by our core ongoing business. Furthermore, we remove general and administrative expenses, income associated with property management performed by us for other organizations, and other income or expense items such as interest income from loan investments or costs from the pursuit of non-consummated transactions. For Property NOI (cash basis), the effects of straight-lined rents and fair value lease revenue are also eliminated; while such effects are not adjusted in calculating Property NOI (accrual basis). Property NOI is a non-GAAP financial measure and should not be viewed as an alternative to net income calculated in accordance with GAAP as a measurement of our operating performance. We believe that Property NOI, on either a cash or accrual basis, is helpful to investors as a supplemental comparative performance measure of income generated by our properties alone without our administrative overhead. Other REITs may not define Property NOI in the same manner as we do; therefore, our computation of Property NOI may not be comparable to that of other REITs.

We calculate Same Store Net Operating Income ("Same Store NOI") as Property NOI applicable to the properties owned or placed in service during the entire span of the current and prior year reporting periods. Same Store NOI is a non-GAAP financial measure and should not be viewed as an alternative to net income calculated in accordance with GAAP as a measurement of our operating performance. We believe that Same Store NOI, on either a cash or accrual basis is helpful to investors as a supplemental comparative performance measure of the income generated from the same group of properties from one period to the next. Other REITs may not define Same Store NOI in the same manner as we do; therefore, our computation of Same Store NOI may not be comparable to that of other REITs.

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The following table sets forth a reconciliation from net income calculated in accordance with GAAP to Property NOI, on both a cash and accrual basis, and Same Store NOI, on both a cash and accrual basis, for the three months ended September 30, 2020 and 2019, respectively (in thousands):

	Cash Basis					Accrual Basis
	Three Months Ended					Three Months Ended
	September 30, 2020			September 30, 2019		September 30, 2020			September 30, 2019
Net income applicable to Piedmont (GAAP basis)	$	8,943		$	8,422	$	8,943		$	8,422
Net loss applicable to noncontrolling interest	(3)			(3)		(3)			(3)
Interest expense	12,725			16,145		12,725			16,145
Depreciation	28,247			27,124		28,247			27,124
Amortization	22,976			19,491		22,976			19,491
Impairment loss on real estate assets	—			1,953		—			1,953
(Gain)/loss on sale of real estate assets	340			(32)		340			(32)
EBITDAre(1) and Core EBITDA (2)	$	73,228		$	73,100	$	73,228		$	73,100
General & administrative expenses	5,469			7,950		5,469			7,950
Management fee revenue (3)	(422)			(203)		(422)			(203)
Other income	(104)			(47)		(104)			(47)
Non-cash general reserve for uncollectible accounts	(33)			—
Straight-line rent effects of lease revenue	(6,315)			(1,531)
Amortization of lease-related intangibles	(3,240)			(1,923)
Property NOI	$	68,583		$	77,346	$	78,171		$	80,800
Net operating income from:
Acquisitions (4)	(10,165)			(2,771)		(14,222)			(3,627)
Dispositions (5)	(56)			(11,800)		(56)			(12,740)
Other investments (6)	18			(896)		(80)			(889)
Same Store NOI	$	58,380		$	61,879	$	63,813		$	63,544
Change period over period in Same Store NOI	(5.7)		%	N/A		0.4		%	N/A

(1)We calculate Earnings Before Interest, Taxes, Depreciation, and Amortization- Real Estate ("EBITDAre") in accordance with the current National Association of Real Estate Investment Trusts (“NAREIT”) definition. NAREIT currently defines EBITDAre as net income (computed in accordance with GAAP) adjusted for gains or losses from sales of property, impairment losses, depreciation on real estate assets, amortization on real estate assets, interest expense and taxes, along with the same adjustments for unconsolidated partnerships and joint ventures. Some of the adjustments mentioned can vary among owners of identical assets in similar conditions based on historical cost accounting and useful-life estimates. EBITDAre is a non-GAAP financial measure and should not be viewed as an alternative to net income calculated in accordance with GAAP as a measurement of our operating performance. We believe that EBITDAre is helpful to investors as a supplemental performance measure because it provides a metric for understanding our results from ongoing operations without taking into account the effects of non-cash expenses (such as depreciation and amortization) and capitalization and capital structure expenses (such as interest expense and taxes). We also believe that EBITDAre can help facilitate comparisons of operating performance between periods and with other REITs. However, other REITs may not define EBITDAre in accordance with the NAREIT definition, or may interpret the current NAREIT definition differently than us; therefore, our computation of EBITDAre may not be comparable to that of such other REITs.

(2)We calculate Core Earnings Before Interest, Taxes, Depreciation, and Amortization ("Core EBITDA") as net income (computed in accordance with GAAP) before interest, taxes, depreciation and amortization and incrementally removing any impairment losses, gains or losses from sales of property and other significant infrequent items that create volatility within our earnings and make it difficult to determine the earnings generated by our core ongoing business. Core EBITDA is a non-GAAP financial measure and

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should not be viewed as an alternative to net income calculated in accordance with GAAP as a measurement of our operating performance. We believe that Core EBITDA is helpful to investors as a supplemental performance measure because it provides a metric for understanding the performance of our results from ongoing operations without taking into account the effects of non-cash expenses (such as depreciation and amortization), as well as items that are not part of normal day-to-day operations of our business. Other REITs may not define Core EBITDA in the same manner as us; therefore, our computation of Core EBITDA may not be comparable to that of other REITs.

(3)Presented net of related operating expenses incurred to earn such management fee revenue.

(4)Acquisitions consist of Galleria 100 and land in Atlanta, Georgia, purchased on May 6, 2019; Galleria 400, Galleria 600 and land in Atlanta, Georgia, purchased on August 23, 2019; and One Galleria Tower, Two Galleria Tower, Three Galleria Tower and land in Dallas, Texas, purchased on February 12, 2020.

(5)Dispositions consist of One Independence Square in Washington, D.C., sold on February 28, 2019; The Dupree in Atlanta, Georgia, sold on September 4, 2019; 500 West Monroe Street in Chicago, Illinois, sold on October 28, 2019; and 1901 Market Street in Philadelphia, Pennsylvania, sold on June 25, 2020.

(6)Other investments consist of active redevelopment and development projects, land, and recently completed redevelopment and development projects for which some portion of operating expenses were capitalized during the current and/or prior year reporting periods. The operating results from Two Pierce Place in Itasca, Illinois, are included in this line item.

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The following table sets forth a reconciliation of net income calculated in accordance with GAAP to EBITDAre, Core EBITDA, Property NOI, and Same Store NOI, on both a cash and accrual basis, for the nine months ended September 30, 2020 and 2019 (in thousands):

	Cash Basis					Accrual Basis
	Nine Months Ended					Nine Months Ended
	September 30, 2020			September 30, 2019		September 30, 2020			September 30, 2019
Net income applicable to Piedmont (GAAP basis)	$	210,079		$	66,783	$	210,079		$	66,783
Net loss applicable to noncontrolling interest	(2)			(3)		(2)			(3)
Interest expense	41,942			46,750		41,942			46,750
Depreciation	83,315			79,982		83,315			79,982
Amortization	70,930			55,622		70,930			55,622
Impairment loss on real estate assets	—			1,953		—			1,953
Gain on sale of real estate assets	(191,032)			(39,370)		(191,032)			(39,370)
EBITDAre(1)	$	215,232		$	211,717	$	215,232		$	211,717
Loss on early extinguishment of debt	9,336			—		9,336			—
Retirement and separation expenses associated with senior management transition in June 2019	—			3,175		—			3,175
Core EBITDA(2)	$	224,568		$	214,892	$	224,568		$	214,892
General & administrative expenses	20,049			26,561		20,049			26,561
Management fee revenue (3)	(1,098)			(2,226)		(1,098)			(2,226)
Other expense/(income)	(170)			(165)		(170)			(165)
Non-cash general reserve for uncollectible accounts	4,831			—
Straight-line rent effects of lease revenue	(20,378)			(7,437)
Amortization of lease-related intangibles	(9,517)			(6,009)
Property NOI	$	218,285		$	225,616	$	243,349		$	239,062
Net operating income from:
Acquisitions (4)	(28,379)			(3,691)		(38,008)			(4,782)
Dispositions (5)	(9,035)			(38,977)		(10,711)			(40,566)
Other investments (6)	(288)			(1,181)		(319)			(1,158)
Same Store NOI	$	180,583		$	181,767	$	194,311		$	192,556
Change period over period in Same Store NOI	(0.7)		%	N/A		0.9		%	N/A

(1)We calculate Earnings Before Interest, Taxes, Depreciation, and Amortization- Real Estate ("EBITDAre") in accordance with the current National Association of Real Estate Investment Trusts (“NAREIT”) definition. NAREIT currently defines EBITDAre as net income (computed in accordance with GAAP) adjusted for gains or losses from sales of property, impairment losses, depreciation on real estate assets, amortization on real estate assets, interest expense and taxes, along with the same adjustments for unconsolidated partnerships and joint ventures. Some of the adjustments mentioned can vary among owners of identical assets in similar conditions based on historical cost accounting and useful-life estimates. EBITDAre is a non-GAAP financial measure and should not be viewed as an alternative to net income calculated in accordance with GAAP as a measurement of our operating performance. We believe that EBITDAre is helpful to investors as a supplemental performance measure because it provides a metric for understanding our results from ongoing operations without taking into account the effects of non-cash expenses (such as depreciation and amortization) and capitalization and capital structure expenses (such as interest expense and taxes). We also believe that EBITDAre can help facilitate comparisons of operating performance between periods and with other REITs. However, other REITs may not define EBITDAre in accordance with the NAREIT definition, or may interpret the current NAREIT definition differently than us; therefore, our computation of EBITDAre may not be comparable to that of such other REITs.

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(2)We calculate Core Earnings Before Interest, Taxes, Depreciation, and Amortization ("Core EBITDA") as net income (computed in accordance with GAAP) before interest, taxes, depreciation and amortization and incrementally removing any impairment losses, gains or losses from sales of property and other significant infrequent items that create volatility within our earnings and make it difficult to determine the earnings generated by our core ongoing business. Core EBITDA is a non-GAAP financial measure and should not be viewed as an alternative to net income calculated in accordance with GAAP as a measurement of our operating performance. We believe that Core EBITDA is helpful to investors as a supplemental performance measure because it provides a metric for understanding the performance of our results from ongoing operations without taking into account the effects of non-cash expenses (such as depreciation and amortization), as well as items that are not part of normal day-to-day operations of our business. Other REITs may not define Core EBITDA in the same manner as us; therefore, our computation of Core EBITDA may not be comparable to that of other REITs. The loss in early extinguishment of debt relates to the early payoff of the mortgage on 1901 Market Street which was sold for gain on June 25, 2020.

(3)Presented net of related operating expenses incurred to earn such management fee revenue.

(4)Acquisitions consist of Galleria 100 and land in Atlanta, Georgia, purchased on May 6, 2019; Galleria 400, Galleria 600 and land in Atlanta, Georgia, purchased on August 23, 2019; and One Galleria Tower, Two Galleria Tower, Three Galleria Tower and land in Dallas, Texas, purchased on February 12, 2020.

(5)Dispositions consist of One Independence Square in Washington, D.C., sold on February 28, 2019; The Dupree in Atlanta, Georgia, sold on September 4, 2019; 500 West Monroe Street in Chicago, Illinois, sold on October 28, 2019; and 1901 Market Street in Philadelphia, Pennsylvania, sold on June 25, 2020.

(6)Other investments consist of active or recently completed redevelopment and development projects for which some portion of operating expenses were capitalized during the current and/or prior year reporting periods and land. The operating results from Two Pierce Place in Itasca, Illinois, are included in this line item.

Overview

Our portfolio is a geographically diverse group of properties primarily located in select sub-markets within seven major Eastern U.S. office markets. We typically lease space to large, credit-worthy corporate or governmental tenants on a long-term basis. As of September 30, 2020, our average lease is approximately 15,000 square feet with over six years of lease term remaining. Consequently, leased percentage, as well as rent roll ups and roll downs, which we experience as a result of re-leasing, can fluctuate widely between buildings and between tenants, depending on when a particular lease is scheduled to commence or expire.

Leased Percentage

On a same store basis, our portfolio was approximately 88% leased as of September 30, 2020, as compared to 91% leased as of September 30, 2019. Other than the City of New York's 313,000 square foot lease that is currently in holdover status at 60 Broad Street in New York, we have no leases greater than 1% of our Annualized Lease Revenue expiring during the eighteen month period following September 30, 2020. We remain in advanced discussions for the renewal of substantially all of the City of New York's leased square footage. To the extent new leases for currently vacant space outweigh or fall short of scheduled expirations, such leases would increase or decrease our overall leased percentage, respectively.

Impact of Downtime, Abatement Periods, and Rental Rate Changes

Commencement of new leases typically occurs 6-18 months after the lease execution date, after refurbishment of the space is completed. The downtime between a lease expiration and the new lease's commencement can negatively impact Property NOI and Same Store NOI comparisons (both accrual and cash basis). In addition, office leases, both new and lease renewals, often contain upfront rental and/or operating expense abatement periods which delay the cash flow benefits of the lease even after the new lease or renewal has commenced and will continue to negatively impact Property NOI and Same Store NOI on a cash basis until such abatements expire. As of September 30, 2020, we had approximately 6% of our total rentable square feet in some form of rental and/or operating expense abatement; consisting of 314,000 square feet of executed leases related to currently vacant space that had not yet commenced, and approximately 893,000 square feet of commenced leases that were in abatement.

If we are unable to replace expiring leases with new or renewal leases at rental rates equal to or greater than the expiring rates, rental rate roll downs could occur and negatively impact Property NOI and Same Store NOI comparisons. As mentioned above, our geographically diverse portfolio and the magnitude of some of our tenant's leased space can result in rent roll ups and roll downs that can fluctuate widely on a building-by-building and a quarter-to-quarter basis. During the nine months ended September 30, 2020, we experienced a 4.8% and 11.3% roll up in cash and accrual rents, respectively, on leases executed during the period for space vacant one year or less.

Despite anticipated growth during the nine months ended September 30, 2020 as compared to the nine months ended September 30, 2019, Same Store NOI was relatively flat as compared to the same period in the prior year, decreasing by 0.7%

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on a cash basis, and increasing by 0.9% on an accrual basis, primarily due to agreements for rent deferrals granted to tenants as a result of the COVID-19 pandemic. Property NOI and Same Store NOI comparisons for any given period fluctuate as a result of the mix of net leasing activity in individual properties during the respective period.

Election as a REIT

We have elected to be taxed as a REIT under the Code and have operated as such beginning with our taxable year ended December 31, 1998. To qualify as a REIT, we must meet certain organizational and operational requirements, including a requirement to distribute at least 90% of our adjusted REIT taxable income, computed without regard to the dividends-paid deduction and by excluding net capital gains attributable to our stockholders, as defined by the Code. As a REIT, we generally will not be subject to federal income tax on income that we distribute to our stockholders. If we fail to qualify as a REIT in any taxable year, we may be subject to federal income taxes on our taxable income for that year and for the four years following the year during which qualification is lost and/or penalties, unless the IRS grants us relief under certain statutory provisions. Such an event could materially adversely affect our net income and net cash available for distribution to our stockholders. However, we believe that we are organized and operate in such a manner as to qualify for treatment as a REIT and intend to continue to operate in the foreseeable future in such a manner that we will remain qualified as a REIT for federal income tax purposes. We have elected to treat POH, a wholly-owned subsidiary of Piedmont, as a taxable REIT subsidiary. POH performs non-customary services for tenants of buildings that we own, including solar power generation, real estate and non-real estate related-services; however, any earnings related to such services performed by our taxable REIT subsidiary are subject to federal and state income taxes. In addition, for us to continue to qualify as a REIT, our investments in taxable REIT subsidiaries cannot exceed 20% of the value of our total assets.

Inflation

We are exposed to inflation risk, as income from long-term leases is the primary source of our cash flows from operations. There are provisions in the majority of our tenant leases that are intended to protect us from, and mitigate the risk of, the impact of inflation. These provisions include rent steps, reimbursement billings for operating expense pass-through charges, real estate tax, and insurance reimbursements on a per square-foot basis, or in some cases, annual reimbursement of operating expenses above certain per square-foot allowances. However, due to the long-term nature of the leases, the leases may not readjust their reimbursement rates frequently enough to fully cover inflation.

Off-Balance Sheet Arrangements

We are not dependent on off-balance sheet financing arrangements for liquidity. As of September 30, 2020, we had no off-balance sheet arrangements. For further information regarding our commitments under our debt obligations, see the Contractual Obligations table below.

Application of Critical Accounting Policies

Our accounting policies have been established to conform with GAAP. The preparation of financial statements in conformity with GAAP requires management to use judgment in the application of accounting policies, including making estimates and assumptions. These judgments affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the dates of the financial statements and the reported amounts of revenue and expenses during the reporting periods. If our judgment or interpretation of the facts and circumstances relating to various transactions had been different, it is possible that different accounting policies would have been applied, thus, resulting in a different presentation of the financial statements. Additionally, other companies may utilize different estimates that may impact comparability of our results of operations to those of companies in similar businesses. Refer to our Annual Report on Form 10-K for the year ended December 31, 2019 for a discussion of our critical accounting policies. There have been no material changes to these policies during the nine months ended September 30, 2020.

40

Accounting Pronouncements Adopted during the Nine Months Ended September 30, 2020

Reference Rate Reform Relief

Accounting Standards Update No. 2020-04, Reference Rate Reform (Topic 848) ("ASU 2020-04"), was issued in March 2020. ASU 2020-04 contains practical expedients for reference rate reform related activities that impact debt, leases, derivatives and other contracts. The guidance in ASU 2020-04 is optional and may be elected over time as reference rate reform activities occur. During the nine months ended September 30, 2020, we elected to apply the hedge accounting expedients related to probability and the assessments of effectiveness for future LIBOR-indexed cash flows to assume that the index upon which future hedged transactions will be based matches the index on the corresponding derivatives. Application of these expedients preserves the presentation of derivatives consistent with past presentation. We continue to evaluate the impact of the guidance and may apply other elections as applicable as additional changes in the market occur.

Financial Instruments- Credit Loss Amendments

On January 1, 2020, we adopted ASU No. 2016-13, Financial Instruments—Credit Losses (Topic 326), Measurement of Credit Losses on Financial Instruments, as well as ASU No. 2019-04, Codification Improvements to Topic 326, Financial Instruments - Credit Losses, Topic 815, Derivatives and Hedging, and Topic 825, Financial Instruments, and ASU No. 2019-05, Financial Instruments- Credit Losses: Targeted Transition Relief (collectively the "Credit Loss Amendments"). The provisions of the Credit Loss Amendments replace the "incurred loss" approach with an "expected loss" model for impairing trade and other receivables, held-to-maturity debt securities, net investment in leases, and off-balance-sheet credit exposures, which will generally result in earlier recognition of allowances for credit losses. However, the Financial Accounting Standards Board (the "FASB") also issued ASU No. 2018-19 Codification Improvements to Topic 326, Financial Instruments - Credit Losses, which is effective concurrent with the Credit Loss Amendments, and excludes receivables arising from operating leases from the scope of the Credit Loss Amendments and affirms that such receivables should be evaluated for collectibility as prescribed by Accounting Standards Codification 842 Leases. As substantially all of our receivables are operating lease receivables there was no material impact to our accompanying consolidated financial statements or disclosures as a result of adoption of the Credit Loss Amendments.

During the nine months ended September 30, 2020, the FASB issued a Staff Q&A on Topic 842 and Topic 840 (lease accounting guidance): Accounting for lease concessions related to the effects of the COVID-19 pandemic. Generally, changes to payment terms not contemplated by the lease contract should be accounted for under Topic 842 as a lease modification. The FASB staff has provided relief from this modification guidance through an accounting policy election, provided that changes to the payment terms do not result in a substantial increase in the rights of either the lessee or the lessor under the lease. We have elected not to apply the relief provided by the FASB Staff, and have instead accounted for all of our approximately 60 rent relief agreements as result of COVID-19 as lease modifications. See further details concerning rent relief agreements with our tenants in Note 7 to our accompanying consolidated financial statements.

Contractual Obligations

We have had significant changes to our debt structure during the nine months ended September 30, 2020 as detailed in Note 4 to our accompanying consolidated financial statements. As such, our contractual obligations related to long-term debt as of September 30, 2020 were as follows (in thousands):

	Payments Due by Period
Contractual Obligations(1)	Total		Less than 1 year		1-3 years		3-5 years		More than 5 years
Long-term debt (2)	$	1,627,976	$	27,976	$	650,000	$	650,000	$	300,000

(1)Contractual obligations do not include amounts committed for tenant or capital improvements under leases where Piedmont is the lessor. However, see Note 7 to our accompanying consolidated financial statements for details concerning our individually material lease commitments, the timing of which may fluctuate. Additionally, Piedmont does not have any ground leases, nor does Piedmont have any material obligations as lessee under operating lease agreements as of September 30, 2020.

(2)Amounts include principal payments only and balances outstanding as of September 30, 2020, not including approximately $11.1 million of net unamortized issuance discounts, debt issuance costs paid to lenders, or estimated fair value adjustments. We made interest payments, including payments under our interest rate swaps, of approximately $41.8 million during the nine months ended September 30, 2020, and expect to pay interest in future periods on outstanding debt obligations based on the rates and terms disclosed herein and in Note 4 to our accompanying consolidated financial statements.

41

Commitments and Contingencies

We are subject to certain commitments and contingencies with regard to certain transactions. Refer to Note 7 to our consolidated financial statements for further explanation. Examples of such commitments and contingencies include:

•Commitments Under Existing Lease Agreements;

•Contingencies Related to Tenant Audits/Disputes; and

•Contingencies Related to the COVID-19 Pandemic.

ITEM 3.    QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

Our future income, cash flows, and estimated fair values of our financial instruments depend in part upon prevailing market interest rates. Market risk is the exposure to loss resulting from changes in interest rates, foreign currency, exchange rates, commodity prices, and equity prices. Our potential for exposure to market risk includes interest rate fluctuations in connection with borrowings under our $500 Million Unsecured 2018 Line of Credit, our Amended and Restated $300 Million Unsecured 2011 Term Loan, and the $250 Million Unsecured 2018 Term Loan. As a result, the primary market risk to which we believe we are exposed is interest rate risk. Many factors, including governmental monetary and tax policies, domestic and international economic and political considerations, and other factors that are beyond our control contribute to interest rate risk, including changes in the method pursuant to which the LIBOR rates are determined and the potential phasing out of LIBOR after 2021. Piedmont has begun an initial evaluation of its contracts and agreements which reference LIBOR and determined that each of these agreements already contain "fallback" language allowing for the substitution of a comparable or successor rate as approved by the respective agent, as defined in the respective agreements. Piedmont will continue to evaluate its contracts as it approaches the December 31, 2021 potential end date for LIBOR.

Our interest rate risk management objectives are to limit the impact of interest rate changes on earnings and cash flow primarily through a low-to-moderate level of overall borrowings, as well as managing the variability in rate fluctuations on our outstanding debt. As such, all of our debt other than the $500 Million Unsecured 2018 Line of Credit, the Amended and Restated $300 Million Unsecured 2011 Term Loan, and $150 million of our $250 Million Unsecured 2018 Term Loan is currently based on fixed or effectively-fixed interest rates to hedge against volatility in the credit markets. We do not enter into derivative or interest rate transactions for speculative purposes, as such all of our debt and derivative instruments were entered into for other than trading purposes.

The estimated fair value of our debt was approximately $1.7 billion as of September 30, 2020 and $1.5 billion as of December 31, 2019. Our interest rate swap agreements in place as of September 30, 2020 and December 31, 2019 carried a notional amount totaling $100 million and $450 million, respectively with a weighted-average fixed interest rate (not including the corporate credit spread) of 2.61% and 2.30%, respectively.

As of September 30, 2020, our total outstanding debt subject to fixed, or effectively fixed, interest rates totaling approximately $1.2 billion has an average effective interest rate of approximately 3.76% per annum with expirations ranging from 2021 to 2030. A change in the market interest rate impacts the net financial instrument position of our fixed-rate debt portfolio but has no impact on interest incurred or cash flows for that portfolio.

As of September 30, 2020, we had no amounts outstanding on our $500 Million Unsecured 2018 Line of Credit. Our $500 Million Unsecured 2018 Line of Credit currently has a stated rate of LIBOR plus 0.90% per annum (based on our current corporate credit rating). The current stated interest rate spread on $150 million of the $250 Million Unsecured 2018 Term Loan that is not effectively fixed through interest rate swaps is LIBOR plus 0.95% (based on our current corporate credit rating), which, as of September 30, 2020, resulted in a total interest rate on $150 million of the $250 Million Unsecured 2018 Term Loan of 1.10%. The current stated interest rate spread on the Amended and Restated $300 Million Unsecured 2011 Term Loan is LIBOR plus 1.00% (based on our current corporate credit rating), which, as of September 30, 2020, resulted in an interest rate of 1.16%. To the extent that we borrow additional funds in the future under the $500 Million Unsecured 2018 Line of Credit or potential future variable-rate lines of credit, we would have exposure to increases in interest rates, which would potentially increase our cost of debt. Additionally, a 1.0% increase in variable interest rates on our existing outstanding borrowings as of September 30, 2020 would increase interest expense approximately $4.5 million on a per annum basis.

42

ITEM 4.    CONTROLS AND PROCEDURES

Management’s Conclusions Regarding the Effectiveness of Disclosure Controls and Procedures

We carried out an evaluation, under the supervision and with the participation of management, including the Principal Executive Officer and the Principal Financial Officer, of the effectiveness of the design and operation of our disclosure controls and procedures as defined in Rules 13a-15(e) and 15d-15(e) of the Securities Exchange Act of 1934 (the “Exchange Act”) as of the end of the quarterly period covered by this report. Based upon that evaluation, the Principal Executive Officer and the Principal Financial Officer concluded that our disclosure controls and procedures were effective as of the end of the period covered by this quarterly report in providing a reasonable level of assurance that information we are required to disclose in the reports we file or submit under the Exchange Act is recorded, processed, summarized, and reported within the time periods specified in applicable SEC rules and forms, including providing a reasonable level of assurance that information required to be disclosed by us in the reports we file under the Exchange Act is accumulated and communicated to our management, including the Principal Executive Officer and the Principal Financial Officer, as appropriate, to allow timely decisions regarding required disclosure.

Changes in Internal Control Over Financial Reporting

There were no changes in our internal control over financial reporting during the quarter ended September 30, 2020 that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

43

PART II. OTHER INFORMATION

ITEM 1.    LEGAL PROCEEDINGS

We are not subject to any material pending legal proceedings. However, we are subject to routine litigation arising in the ordinary course of owning and operating real estate assets. Our management expects that these ordinary routine legal proceedings will be covered by insurance and does not expect these legal proceedings to have a material adverse effect on our financial condition, results of operations, or liquidity. Additionally, management is not aware of any legal proceedings against Piedmont contemplated by governmental authorities.

ITEM 1A.    RISK FACTORS

Actual or threatened public health epidemics or outbreaks, such as the novel coronavirus (COVID-19) pandemic that the world is currently experiencing, and governmental and private measures taken to combat such health crises, could have a material adverse effect on the trading value of our common stock, on our business operations, and our financial results.

Actual or threatened public health epidemics or outbreaks, such as the novel coronavirus (COVID-19) pandemic that the world is currently experiencing, impact the U.S. and global economies and as a result, could have a material adverse effect on our business and results of operations. During the first quarter of 2020, the World Health Organization declared the COVID-19 outbreak a pandemic. There continue to be various mandates from international, federal, state and local authorities requiring forced closures or other restrictions in many of the markets in which our buildings are located. Although many (but not all) of these restrictions have been gradually lifted, they may be re-imposed in areas that experience a resurgence of COVID-19 cases. Such restrictions, including forced closures, have affected the global economy and the regional U.S. economies in which we operate, and have negatively impacted the trading price of our common stock, as well as some of our tenants' ability to pay their rent. As a result, we have entered into lease modification agreements with approximately 60 of our tenants who have experienced disruptions in their business as a result of the pandemic. Most of these agreements defer the payment of all or some portion of three to four months of rent until later in 2020 or 2021. Piedmont has established an approximately $4.8 million general reserve related to tenant receivables; however, there can be no assurances that this amount will be sufficient to cover any future losses of rental income should these tenants be unable to pay back deferred rents when such rents become due. Although various governmental financial programs may mitigate the risk of our tenants being unable to pay their rent under our leases, governmental assistance may not be available to all affected tenants or may be significantly delayed or discontinued. These restrictions have also caused certain of our retail and restaurant tenants to close or operate at reduced capacity for an extended period of time, which could cause them to default on their leases.

The measures taken to curb the spread of COVID-19 may negatively impact the ability of our properties to continue to obtain necessary goods and services or provide adequate staffing, which may also adversely affect our operating results and reputation. Any increased costs or lost revenue as a result of tenant financial difficulty, or their need to comply with restrictions imposed to curb the spread of the pandemic, may not be fully recoverable under our leases or adequately covered by insurance, which could impact our profitability. In addition to the potential consequences listed above, these same factors may cause prospective tenants to delay their leasing decisions or to lease less space. The prevalence of work-from-home policies as a result of the pandemic may alter tenant preferences in the long term with respect to the demand for leasing office space and could result in higher cleaning costs. Our tenants' inability to pay rent under our leases could adversely affect our own liquidity, and there can be no guarantee that additional liquidity will be readily available or available on favorable terms in the future. Interest rate volatility and movements at times during the current year have also made obtaining financing or refinancing debt obligations more challenging and expensive.

The extent of the impacts of the COVID-19 pandemic, and actions taken to contain it and the consequential impacts on our operations and those of our tenants, will depend on future developments, which are highly uncertain and cannot be predicted with confidence, including the scope, severity and duration of the pandemic, the success of the actions taken to contain and treat the virus, and the amount, if any, of any government assistance. The long-term impact of COVID-19 on the U.S. and global economies could cause a prolonged world-wide economic downturn or recession and may lead to corporate bankruptcies among our tenants. Any of these developments, and other effects of the ongoing global pandemic of COVID-19 or any other pandemic, epidemic or outbreak of contagious disease, could have a material adverse effect on our business and results of operations.

There have been no other known material changes, other than as described above, from the risk factors previously disclosed in our Annual Report on Form 10-K for the year ended December 31, 2019.

44

ITEM 2.    UNREGISTERED SALES OF EQUITY SECURITIES AND USE OF PROCEEDS

(a)There were no unregistered sales of equity securities during the third quarter of 2020.

(b)Not applicable.

(c)There were no repurchases of shares of our common stock during the third quarter of 2020.

ITEM 3.    DEFAULTS UPON SENIOR SECURITIES

Not applicable.

ITEM 4.    MINE SAFETY DISCLOSURES

Not applicable.

ITEM 5.    OTHER INFORMATION

None.

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ITEM 6.    EXHIBITS

Exhibit Number	Description of Document
3.1	Third Articles of Amendment and Restatement of Piedmont Office Realty Trust, Inc. (the “Company”) (incorporated by reference to Exhibit 3.1 to the Company’s Annual Report on Form 10-K for the fiscal year ended December 31, 2009, filed on March 16, 2010)
3.2	Articles of Amendment of the Company effective June 30, 2011 (incorporated by reference to Exhibit 3.2 to the Company's Current Report on Form 8-K filed on July 6, 2011)
3.3	Articles Supplementary of the Company effective June 30, 2011 (incorporated by reference to Exhibit 3.1 to the Company's Current Report on Form 8-K filed on July 6, 2011)
3.4	Articles Supplementary to the Third Articles of Amendment and Restatement of the Company, as supplemented and amended (incorporated by reference to Exhibit 3.1 to the Company's Current Report on Form 8-K, filed on November 14, 2016)
3.5	Articles of Amendment to the Third Articles of Amendment and Restatement of the Company, as supplemented and amended (incorporated by reference to Exhibit 3.1 to the Company's Current Report on Form 8-K filed on May 23, 2018)
3.6	Amended and Restated Bylaws of the Company (incorporated by reference to Exhibit 3.1 to the Company’s Current Report on Form 8-K, filed on March 19, 2019)
4.1	Supplemental Indenture, dated August 12, 2020, by and among Piedmont Operating Partnership, LP, Piedmont Office Realty Trust, Inc. and U.S. Bank National Association, as trustee (incorporated by reference to Exhibit 4.2 to the Company's Current Report on Form 8-K filed on August 12, 2020)
4.2	Form of 3.150% Senior Notes due 2030 (included in Exhibit 4.1) (incorporated by reference to Exhibit 4.3 to the Company's Current Report on Form 8-K filed on August 12, 2020)
22.1	Subsidiary Issuer of Guaranteed Securities
31.1	Certification of Principal Executive Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002
31.2	Certification of Principal Financial Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002
32.1	Certification of Chief Executive Officer pursuant to Section 906 of the Sarbanes-Oxley Act of 2002
32.2	Certification of Chief Financial Officer pursuant to Section 906 of the Sarbanes-Oxley Act of 2002
101.INS	XBRL Instance Document - the instance document does not appear in the Interactive Data File because its XBRL tags are embedded within the Inline XBRL document
101.SCH	Inline XBRL Taxonomy Extension Schema Document
101.CAL	Inline XBRL Taxonomy Extension Calculation Linkbase Document
101.DEF	Inline XBRL Taxonomy Extension Definition Linkbase Document
101.LAB	Inline XBRL Taxonomy Extension Label Linkbase Document
101.PRE	Inline XBRL Taxonomy Extension Presentation Linkbase Document
104	Cover Page Interactive Data File (formatted as Inline XBRL and contained in Exhibit 101)

46

SIGNATURES

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

		PIEDMONT OFFICE REALTY TRUST, INC.
		(Registrant)
Dated:	October 29, 2020	By:	/s/ Robert E. Bowers
			Robert E. Bowers
			Chief Financial Officer and Executive Vice President
			(Principal Financial Officer and Duly Authorized Officer)

47

EX-22.1

Exhibit 22.1

Subsidiary Issuer of Guaranteed Securities

Piedmont Operating Partnership, LP (“Piedmont OP”), the wholly-owned subsidiary of the registrant, Piedmont Office Realty Trust, Inc., is the issuer of (i) $350 million aggregate principal amount of 3.40% Senior Notes due 2023, (ii) $400 million aggregate principal amount of 4.450% Senior Notes due 2024, and (iii) $300 million aggregate principal amount of 3.15% Senior Notes due 2030 (collectively, the “Senior Notes”). The Senior Notes are fully and unconditionally guaranteed by the registrant, the parent entity that consolidates Piedmont OP and all other subsidiaries.

EX-31.1

EXHIBIT 31.1

PRINCIPAL EXECUTIVE OFFICER CERTIFICATION

PURSUANT TO

SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002

I, C. Brent Smith, certify that:

1.I have reviewed this Form 10-Q for the quarter ended September 30, 2020 of Piedmont Office Realty Trust, Inc.;

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 directors (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.

Dated: October 29, 2020

By:	/s/ C. Brent Smith
	C. Brent Smith
	Principal Executive Officer

EX-31.2

EXHIBIT 31.2

PRINCIPAL FINANCIAL OFFICER CERTIFICATION

PURSUANT TO

SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002

I, Robert E. Bowers, certify that:

1.I have reviewed this Form 10-Q for the quarter ended September 30, 2020 of Piedmont Office Realty Trust, Inc.;

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 directors (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.

Dated: October 29, 2020

By:	/s/ Robert E. Bowers
	Robert E. Bowers
	Principal Financial Officer

EX-32.1

EXHIBIT 32.1

CERTIFICATION OF CHIEF EXECUTIVE OFFICER

PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 (18 U.S.C. 1350)

In connection with the Report of Piedmont Office Realty Trust, Inc. (the “Registrant”) on Form 10-Q for the quarter ended September 30, 2020, as filed with the Securities and Exchange Commission (the “Report”), the undersigned, C. Brent Smith, Chief Executive Officer of the Registrant, hereby certifies, pursuant to 18 U.S.C. §1350, as adopted pursuant to §906 of the Sarbanes-Oxley Act of 2002, that, to the best of my knowledge and belief:

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

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

By:	/s/ C. Brent Smith
	C. Brent Smith
	Chief Executive Officer
	October 29, 2020

EX-32.2

EXHIBIT 32.2

CERTIFICATION OF CHIEF FINANCIAL OFFICER

PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 (18 U.S.C. 1350)

In connection with the Report of Piedmont Office Realty Trust, Inc. (the “Registrant”) on Form 10-Q for the quarter ended September 30, 2020, as filed with the Securities and Exchange Commission (the “Report”), the undersigned, Robert E. Bowers, Chief Financial Officer of the Registrant, hereby certifies, pursuant to 18 U.S.C. §1350, as adopted pursuant to §906 of the Sarbanes-Oxley Act of 2002, that, to the best of my knowledge and belief:

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

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

By:	/s/ Robert E. Bowers
	Robert E. Bowers
	Chief Financial Officer
	October 29, 2020

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	Sep. 30, 2020	Oct. 28, 2020
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Entity File Number	001-34626
Entity Registrant Name	Piedmont Office Realty Trust, Inc.
Entity Incorporation, State or Country Code	MD
Entity Tax Identification Number	58-2328421
Entity Address, Address Line One	5565 Glenridge Connector Ste. 450
Entity Address, City or Town	Atlanta
Entity Address, State or Province	GA
Entity Address, Postal Zip Code	30342
City Area Code	770
Local Phone Number	418-8800
Title of 12(b) Security	Common Stock, $0.01 par value
Trading Symbol	PDM
Security Exchange Name	NYSE
Entity Current Reporting Status	Yes
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Entity Filer Category	Large Accelerated Filer
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Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Real estate assets, at cost:
Land	$ 505,228	$ 485,560
Buildings and improvements, less accumulated depreciation of $803,160 and $730,750 as of September 30, 2020 and December 31, 2019, respectively	2,480,820	2,212,935
Intangible lease assets, less accumulated amortization of $63,353 and $50,766 as of September 30, 2020 and December 31, 2019, respectively	98,517	74,405
Construction in progress	56,393	29,920
Real estate assets held for sale, net	0	139,690
Total real estate assets	3,140,958	2,942,510
Cash and cash equivalents	23,958	13,545
Tenant receivables, net of allowance for doubtful accounts of $4,831 and $0 as of September 30, 2020 and December 31, 2019, respectively	11,301	8,226
Straight-line rent receivables	154,620	132,342
Restricted cash and escrows	1,781	1,841
Prepaid expenses and other assets	28,074	25,427
Goodwill	98,918	98,918
Deferred lease costs, less accumulated amortization of $169,975 and $147,324 as of September 30, 2020 and December 31, 2019, respectively	293,472	265,747
Other assets held for sale, net	0	28,201
Total assets	3,753,082	3,516,757
Liabilities:
Unsecured debt, net of discount and unamortized debt issuance costs of $11,589 and $7,626 as of September 30, 2020 and December 31, 2019, respectively	1,588,411	1,292,374
Secured debt, net of premiums and unamortized debt issuance costs of $448 and $343 as of September 30, 2020 and December 31, 2019, respectively	28,424	189,030
Accounts payable, accrued expenses and accrued capital expenditures	120,763	117,496
Dividends payable	0	26,427
Deferred income	36,613	34,609
Intangible lease liabilities, less accumulated amortization of $24,881 and $19,607 as of September 30, 2020 and December 31, 2019, respectively	38,324	25,069
Interest rate swaps	10,618	5,121
Other liabilities held for sale	0	7,657
Total liabilities	1,823,153	1,697,783
Commitments and Contingencies (Note 7)	0	0
Stockholders’ Equity:
Shares-in-trust, 150,000,000 shares authorized; none outstanding as of September 30, 2020 or December 31, 2019	0	0
Preferred stock, no par value, 100,000,000 shares authorized; none outstanding as of September 30, 2020 or December 31, 2019	0	0
Common stock, $0.01 par value, 750,000,000 shares authorized; 126,028,762 and 125,783,408 shares issued and outstanding as of September 30, 2020 and December 31, 2019, respectively	1,260	1,258
Additional paid-in capital	3,692,634	3,686,398
Cumulative distributions in excess of earnings	(1,740,670)	(1,871,375)
Other comprehensive income/(loss)	(24,993)	967
Piedmont stockholders’ equity	1,928,231	1,817,248
Noncontrolling interest	1,698	1,726
Total stockholders’ equity	1,929,929	1,818,974
Total liabilities and stockholders’ equity	$ 3,753,082	$ 3,516,757

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Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Assets:
Intangible lease assets, accumulated amortization	$ 63,353	$ 50,766
Tenant receivables, allowance for doubtful accounts	4,831	0
Deferred lease costs, accumulated amortization	169,975	147,324
Liabilities:
Intangible lease liabilities, accumulated amortization	$ 24,881	$ 19,607
Stockholders’ Equity:
Shares-in-trust, shares authorized (in shares)	150,000,000	150,000,000
Shares-in-trust, shares outstanding (in shares)	0	0
Preferred stock, par value (in dollars per share)	$ 0	$ 0
Preferred stock, shares authorized (in shares)	100,000,000	100,000,000
Preferred stock, shares outstanding (in shares)	0	0
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	750,000,000	750,000,000
Common stock, shares issued (in shares)	126,028,762	125,783,408
Common stock, shares outstanding (in shares)	126,028,762	125,783,408
Unsecured Debt
Liabilities:
Discount (premiums) and unamortized debt issuance costs	$ 11,589	$ 7,626
Secured Debt
Liabilities:
Discount (premiums) and unamortized debt issuance costs	(448)	(343)
Building and improvements
Assets:
Buildings and improvements, accumulated depreciation	$ 803,160	$ 730,750

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Consolidated Statements of Income - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Revenues:
Rental and tenant reimbursement revenue	$ 128,280	$ 130,579	$ 391,681	$ 382,213
Total revenues	131,693	135,421	403,495	399,025
Expenses:
Property operating costs	53,293	54,613	159,631	158,798
Depreciation	28,255	27,131	83,339	80,004
Amortization	22,990	19,505	70,970	55,666
Impairment loss on real estate assets	0	1,953	0	1,953
General and administrative	5,469	7,950	20,049	29,736
Expenses	110,007	111,152	333,989	326,157
Other income (expense):
Interest expense	(12,725)	(16,145)	(41,942)	(46,750)
Other income	319	263	817	1,292
Loss on early extinguishment of debt	0	0	(9,336)	0
Gain/(loss) on sale of real estate assets	(340)	32	191,032	39,370
Nonoperating income (expense)	(12,746)	(15,850)	140,571	(6,088)
Net income	8,940	8,419	210,077	66,780
Net loss applicable to noncontrolling interest	3	3	2	3
Net income applicable to Piedmont	$ 8,943	$ 8,422	$ 210,079	$ 66,783
Per share information – basic:
Net income applicable to common stockholders (in dollars per share)	$ 0.07	$ 0.07	$ 1.67	$ 0.53
Per share information – diluted:
Net income applicable to common stockholders (in dollars per share)	$ 0.07	$ 0.07	$ 1.66	$ 0.53
Weighted-average common shares outstanding – basic (in shares)	126,028,762	125,783,408	125,955,097	125,684,202
Weighted-average common shares outstanding – diluted (in shares)	126,385,035	126,239,744	126,302,051	126,189,851
Property management fee revenue
Revenues:
Property management and other property related revenue	$ 751	$ 405	$ 2,146	$ 2,819
Other property related income
Revenues:
Property management and other property related revenue	$ 2,662	$ 4,437	$ 9,668	$ 13,993

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Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Statement of Comprehensive Income [Abstract]
Net income applicable to Piedmont	$ 8,943	$ 8,422	$ 210,079	$ 66,783
Other comprehensive loss:
Effective portion of loss on derivative instruments that are designated and qualify as cash flow hedges (See Note 5)	(2,443)	(1,386)	(26,949)	(6,874)
Plus/(less): Reclassification of net (gain)/loss included in net income (See Note 5)	810	(427)	989	(1,871)
Other comprehensive loss	(1,633)	(1,813)	(25,960)	(8,745)
Comprehensive income applicable to Piedmont	$ 7,310	$ 6,609	$ 184,119	$ 58,038

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Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands	Total	Common  Stock	Additional Paid-In Capital	Cumulative Distributions in Excess of Earnings	Other Comprehensive Income/(Loss)	Non- controlling Interest
Beginning balance (in shares) at Dec. 31, 2018		126,219,000
Balance at Dec. 31, 2018	$ 1,712,140	$ 1,262	$ 3,683,186	$ (1,982,542)	$ 8,462	$ 1,772
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Offering costs	(700)		(700)
Share repurchases as part of announced plan (in shares)		(728,000)
Share repurchases as part of an announced plan	(12,482)	$ (7)		(12,475)
Dividends to common stockholders, stockholders of subsidiaries, and dividends reinvested	(79,447)		(216)	(79,204)		(27)
Shares issued and amortized under the 2007 Omnibus Incentive Plan, net of tax (in shares)		292,000
Shares issued and amortized under the 2007 Omnibus Incentive Plan, net of tax	3,237	$ 3	3,234
Net loss applicable to noncontrolling interest	(3)					(3)
Net income applicable to Piedmont	66,783			66,783
Other comprehensive loss	(8,745)				(8,745)
Ending balance (in shares) at Sep. 30, 2019		125,783,000
Balance at Sep. 30, 2019	1,680,783	$ 1,258	3,685,504	(2,007,438)	(283)	1,742
Beginning balance (in shares) at Jun. 30, 2019		125,783,000
Balance at Jun. 30, 2019	1,702,975	$ 1,258	3,687,881	(1,989,446)	1,530	1,752
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Offering costs	(700)		(700)
Dividends to common stockholders, stockholders of subsidiaries, and dividends reinvested	(26,495)		(74)	(26,414)		(7)
Shares issued and amortized under the 2007 Omnibus Incentive Plan, net of tax (in shares)		0
Shares issued and amortized under the 2007 Omnibus Incentive Plan, net of tax	(1,603)	$ 0	(1,603)
Net loss applicable to noncontrolling interest	(3)					(3)
Net income applicable to Piedmont	8,422			8,422
Other comprehensive loss	(1,813)				(1,813)
Ending balance (in shares) at Sep. 30, 2019		125,783,000
Balance at Sep. 30, 2019	$ 1,680,783	$ 1,258	3,685,504	(2,007,438)	(283)	1,742
Beginning balance (in shares) at Dec. 31, 2019	125,783,408	125,783,000
Balance at Dec. 31, 2019	$ 1,818,974	$ 1,258	3,686,398	(1,871,375)	967	1,726
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Dividends to common stockholders, stockholders of subsidiaries, and dividends reinvested	(79,405)		(5)	(79,374)		(26)
Shares issued and amortized under the 2007 Omnibus Incentive Plan, net of tax (in shares)		246,000
Shares issued and amortized under the 2007 Omnibus Incentive Plan, net of tax	6,243	$ 2	6,241
Net loss applicable to noncontrolling interest	(2)					(2)
Net income applicable to Piedmont	210,079			210,079
Other comprehensive loss	$ (25,960)				(25,960)
Ending balance (in shares) at Sep. 30, 2020	126,028,762	126,029,000
Balance at Sep. 30, 2020	$ 1,929,929	$ 1,260	3,692,634	(1,740,670)	(24,993)	1,698
Beginning balance (in shares) at Jun. 30, 2020		126,025,000
Balance at Jun. 30, 2020	1,947,837	$ 1,260	3,691,377	(1,723,147)	(23,360)	1,707
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Dividends to common stockholders, stockholders of subsidiaries, and dividends reinvested	(26,472)			(26,466)		(6)
Shares issued and amortized under the 2007 Omnibus Incentive Plan, net of tax (in shares)		4,000
Shares issued and amortized under the 2007 Omnibus Incentive Plan, net of tax	1,257	$ 0	1,257
Net loss applicable to noncontrolling interest	(3)					(3)
Net income applicable to Piedmont	8,943			8,943
Other comprehensive loss	$ (1,633)				(1,633)
Ending balance (in shares) at Sep. 30, 2020	126,028,762	126,029,000
Balance at Sep. 30, 2020	$ 1,929,929	$ 1,260	$ 3,692,634	$ (1,740,670)	$ (24,993)	$ 1,698

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Consolidated Statement of Stockholders' Equity (Parenthetical) - $ / shares	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Statement of Stockholders' Equity [Abstract]
Dividends to common stockholders per share (in dollars per share)	$ 0.21	$ 0.21	$ 0.63	$ 0.63

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Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019
Cash Flows from Operating Activities:
Net income	$ 210,077	$ 66,780
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	83,339	80,004
Amortization of debt issuance costs net of favorable settlement of interest rate swaps	1,319	419
Other amortization	64,076	52,057
Impairment loss on real estate assets	0	1,953
Loss on early extinguishment of debt	349	0
General reserve for uncollectible accounts	4,831	0
Stock compensation expense	6,980	12,365
Gain on sale of real estate assets	(191,032)	(39,370)
Changes in assets and liabilities:
Increase in tenant and straight-line rent receivables	(30,898)	(10,660)
Increase in prepaid expenses and other assets	(3,745)	(1,958)
Cash paid upon settlement of interest rate swaps	(19,930)	0
Increase/(decrease) in accounts payable and accrued expenses	12,834	(2,496)
Increase in deferred income	610	1,149
Net cash provided by operating activities	138,810	160,243
Cash Flows from Investing Activities:
Acquisition of real estate assets and intangibles	(396,745)	(326,144)
Capitalized expenditures	(80,007)	(57,368)
Net sales proceeds from wholly-owned properties	350,807	180,975
Deferred lease costs paid	(27,011)	(16,632)
Net cash used in investing activities	(152,956)	(219,169)
Cash Flows from Financing Activities:
Debt issuance and other costs paid	(1,116)	(91)
Proceeds from debt	1,136,383	550,000
Repayments of debt	(1,001,711)	(358,041)
Discount paid due to loan modification	(525)	0
Costs of issuance of common stock	0	(259)
Value of shares withheld for payment of taxes related to employee stock compensation	(2,700)	(3,295)
Repurchases of common stock as part of announced plan	0	(16,899)
Dividends paid and discount on dividend reinvestments	(105,832)	(106,419)
Net cash provided by financing activities	24,499	64,996
Net increase in cash, cash equivalents, and restricted cash and escrows	10,353	6,070
Cash, cash equivalents, and restricted cash and escrows, beginning of period	15,386	6,034
Cash, cash equivalents, and restricted cash and escrows, end of period	$ 25,739	$ 12,104

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Organization

9 Months Ended

Sep. 30, 2020

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Organization

Organization

Piedmont Office Realty Trust, Inc. (“Piedmont”) (NYSE: PDM) is a Maryland corporation that operates in a manner so as to qualify as a real estate investment trust (“REIT”) for federal income tax purposes and engages in the acquisition, development, redevelopment, management, and ownership of commercial real estate properties located primarily in select sub-markets within seven major Eastern U.S. office markets, including properties that are under construction, are newly constructed, or have operating histories. Piedmont was incorporated in 1997 and commenced operations in 1998. Piedmont conducts business primarily through Piedmont Operating Partnership, L.P. (“Piedmont OP”), a Delaware limited partnership, as well as performing the management of its buildings through two wholly-owned subsidiaries, Piedmont Government Services, LLC and Piedmont Office Management, LLC. Piedmont owns 99.9% of, and is the sole general partner of, Piedmont OP and as such, possesses full legal control and authority over the operations of Piedmont OP. The remaining 0.1% ownership interest of Piedmont OP is held indirectly by Piedmont through its wholly-owned, taxable REIT subsidiary, Piedmont Office Holdings, Inc. ("POH"), the sole limited partner of Piedmont OP. Piedmont OP owns properties directly, through wholly-owned subsidiaries, and through various joint ventures which it controls. References to Piedmont herein shall include Piedmont and all of its subsidiaries, including Piedmont OP and its subsidiaries and joint ventures.

As of September 30, 2020, Piedmont owned 57 in-service office properties in select sub-markets located within seven major U.S. office markets: Atlanta, Boston, Dallas, Minneapolis, New York, Orlando, and Washington, D.C. As of September 30, 2020, Piedmont's 57 in-service office properties comprised approximately 17.2 million square feet of primarily Class A commercial office space and were 86.9% leased.

Piedmont internally evaluates all of its real estate assets as one operating segment, and accordingly does not report segment information.

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Summary of Significant Accounting Policies

9 Months Ended

Sep. 30, 2020

Accounting Policies [Abstract]

Summary of Significant Accounting Policies

Summary of Significant Accounting Policies

Basis of Presentation and Principles of Consolidation

The consolidated financial statements of Piedmont have been prepared in accordance with the rules and regulations of the Securities and Exchange Commission (the “SEC”), including the instructions to Form 10-Q and Article 10 of Regulation S-X, and do not include all of the information and footnotes required by GAAP for complete financial statements. In the opinion of management, the statements for the unaudited interim periods presented include all adjustments, which are of a normal and recurring nature, necessary for a fair presentation of the results for such periods. Results for these interim periods are not necessarily indicative of a full year’s results.

Piedmont’s consolidated financial statements include the accounts of Piedmont, Piedmont’s wholly-owned subsidiaries, any variable interest entity ("VIE") for which Piedmont or any of its wholly-owned subsidiaries is considered to have the power to direct the activities of the entity and the obligation to absorb losses/right to receive benefits, or any entity in which Piedmont or any of its wholly-owned subsidiaries owns a controlling interest. In determining whether Piedmont or Piedmont OP has a controlling interest, the following factors, among others, are considered: equity ownership, voting rights, protective rights of investors, and participatory rights of investors. For further information, refer to the financial statements and footnotes included in Piedmont’s Annual Report on Form 10-K for the year ended December 31, 2019.

All intercompany balances and transactions have been eliminated upon consolidation.

Further, Piedmont has formed special purpose entities to acquire and hold real estate. Each special purpose entity is a separate legal entity. Consequently, the assets of these special purpose entities are not available to all creditors of Piedmont. The assets owned by these special purpose entities are being reported on a consolidated basis with Piedmont’s assets for financial reporting purposes only.

Use of Estimates

The preparation of the accompanying consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the amounts reported in the accompanying consolidated financial statements and notes. The most significant of these estimates include the underlying cash flows and holding periods used in assessing impairment, judgements regarding the recoverability of goodwill, and the assessment of the collectibility of receivables. Future impacts of the COVID-19 pandemic on Piedmont and its tenants may affect these and other estimates used in the preparation of these financial statements. While Piedmont has made, what it believes to be, appropriate accounting estimates based on the facts and circumstances available as of the reporting date, actual results could materially differ from those estimates.

Income Taxes

Piedmont has elected to be taxed as a REIT under the Internal Revenue Code of 1986, as amended, and has operated as such, beginning with its taxable year ended December 31, 1998. To qualify as a REIT, Piedmont must meet certain organizational and operational requirements, including a requirement to distribute at least 90% of its annual REIT taxable income. As a REIT, Piedmont is generally not subject to federal income taxes, subject to fulfilling, among other things, its taxable income distribution requirement. Piedmont is subject to certain taxes related to the operations of properties in certain locations, as well as operations conducted by its taxable REIT subsidiary, POH, which have been provided for in the financial statements.

Operating Leases

Piedmont recognized the following fixed and variable lease payments, which together comprised rental and tenant reimbursement revenue in the accompanying consolidated statements of income for the three and nine months ended September 30, 2020 and 2019, respectively, as follows (in thousands):

	Three Months Ended				Nine Months Ended
	September 30, 2020		September 30, 2019		September 30, 2020		September 30, 2019
Fixed payments	$	108,071	$	105,207	$	329,281	$	311,503
Variable payments	20,209		25,372		62,400		70,710
Total Rental and Tenant Reimbursement Revenue	$	128,280	$	130,579	$	391,681	$	382,213

Operating leases where Piedmont is the lessee relate primarily to office space in buildings owned by third parties. For both the three and nine months ended September 30, 2020 and 2019, Piedmont recognized approximately $20,000 and $60,000, respectively, of operating lease costs related to these office space leases. As of September 30, 2020, the weighted-average lease term of Piedmont's right of use assets is approximately three years, and the weighted-average discount rate is 3.35%.

Intangible Assets and Liabilities Resulting from Purchasing Real Estate Assets

Upon the acquisition of real properties, Piedmont allocates the purchase price of the properties to tangible assets, consisting of land, building, site improvements, and identified intangible assets and liabilities, including the value of in-place leases, based in each case on Piedmont's estimate of their fair values in accordance with Accounting Standards Codification ("ASC") 820 Fair Value Measurements.

Gross intangible lease assets and liabilities arising from in-place leases, inclusive of amounts classified as real estate assets held for sale, recorded at acquisition as of September 30, 2020 and December 31, 2019, respectively, are as follows (in thousands):

	September 30, 2020		December 31, 2019
Intangible Lease Assets:
Above-Market In-Place Lease Assets	$	2,227	$	2,082
In-Place Lease Valuation	$	159,643	$	157,101
Intangible Lease Origination Costs (included as component of Deferred Lease Costs)	$	254,856	$	256,627
Intangible Lease Liabilities (Below-Market In-Place Leases)	$	63,205	$	84,292

For the three and nine months ended September 30, 2020 and 2019, respectively, Piedmont recognized amortization of intangible lease costs as follows (in thousands):

	Three Months Ended				Nine Months Ended
	September 30, 2020		September 30, 2019		September 30, 2020		September 30, 2019
Amortization of Intangible Lease Origination Costs and In-Place Lease Valuation included in amortization expense	$	18,522	$	15,881	$	58,674	$	45,057
Amortization of Above-Market and Below-Market In-Place Lease intangibles as a net increase to rental revenues	$	3,147	$	1,923	$	9,423	$	6,009

Net intangible assets and liabilities as of September 30, 2020 will be amortized as follows (in thousands):

	Intangible Lease Assets
	Above-Market In-place Lease Assets		In-Place Lease Valuation		Intangible Lease Origination Costs (1)		Below-Market In-place Lease Liabilities
For the remainder of 2020	$	117	$	7,576	$	10,368	$	2,884
For the years ending December 31:
2021	420		27,635		38,743		10,899
2022	300		20,773		30,527		8,422
2023	103		13,923		21,019		5,139
2024	70		9,141		14,462		3,238
2025	6		5,658		10,069		2,072
Thereafter	18		12,777		24,881		5,670
	$	1,034	$	97,483	$	150,069	$	38,324
Weighted-Average Amortization Period (in years)	3		5		6		5

(1)Included as a component of Deferred Lease Costs in the accompanying consolidated balance sheets.

Accounting Pronouncements and Amendments Adopted during the Nine Months Ended September 30, 2020

Reference Rate Reform Relief

Accounting Standards Update No. 2020-04, Reference Rate Reform (Topic 848) ("ASU 2020-04"), was issued in March 2020. ASU 2020-04 contains practical expedients for reference rate reform related activities that impact debt, leases, derivatives and other contracts. The guidance in ASU 2020-04 is optional and may be elected over time as reference rate reform activities occur. During the nine months ended September 30, 2020, Piedmont elected to apply the hedge accounting expedients related to probability and the assessments of effectiveness for future LIBOR-indexed cash flows to assume that the index upon which future hedged transactions will be based matches the index on the corresponding derivatives. Application of these expedients preserves the presentation of derivatives consistent with past presentation. Piedmont continues to evaluate the impact of the guidance and may apply other elections as applicable as additional changes in the market occur.

Financial Instruments- Credit Loss Amendments

On January 1, 2020, Piedmont adopted ASU No. 2016-13, Financial Instruments—Credit Losses (Topic 326), Measurement of Credit Losses on Financial Instruments, as well as ASU No. 2019-04, Codification Improvements to Topic 326, Financial Instruments - Credit Losses, Topic 815, Derivatives and Hedging, and Topic 825, Financial Instruments, and ASU No. 2019-05, Financial Instruments- Credit Losses: Targeted Transition Relief (collectively the "Credit Loss Amendments"). The provisions of the Credit Loss Amendments replace the "incurred loss" approach with an "expected loss" model for impairing trade and other receivables, held-to-maturity debt securities, net investment in leases, and off-balance-sheet credit exposures, which will generally result in earlier recognition of allowances for credit losses. However, the Financial Accounting Standards Board (the "FASB") also issued ASU No. 2018-19 Codification Improvements to Topic 326, Financial Instruments - Credit

Losses, which is effective concurrent with the Credit Loss Amendments, and excludes receivables arising from operating leases from the scope of the Credit Loss Amendments and affirms that such receivables should be evaluated for collectibility as prescribed by ASC 842 Leases. As substantially all of Piedmont's receivables are operating lease receivables there was no material impact to Piedmont's accompanying consolidated financial statements or disclosures as a result of adoption of the Credit Loss Amendments.

During the nine months ended September 30, 2020, the FASB issued a Staff Q&A on Topic 842 and Topic 840 (lease accounting guidance): Accounting for lease concessions related to the effects of the COVID-19 pandemic. Generally, changes to payment terms not contemplated by the lease contract should be accounted for under Topic 842 as a lease modification. The FASB staff has provided relief from this modification guidance through an accounting policy election, provided that changes to the payment terms do not result in a substantial increase in the rights of either the lessee or the lessor under the lease. Piedmont has elected not to apply the relief provided by the FASB Staff, and has instead accounted for all rent relief agreements as result of COVID-19 as lease modifications. See further details concerning rent relief agreements with Piedmont's tenants in Note 7 below.

Reclassifications

Certain prior period amounts presented in the accompanying consolidated balance sheets have been reclassified as of December 31, 2019 to conform to the current period financial statement presentation related to the 1901 Market Street building, which was classified as held for sale as of March 31, 2020, and sold on June 25, 2020. (see Note 8).

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Acquisitions

9 Months Ended

Sep. 30, 2020

Property, Plant and Equipment [Abstract]

Acquisitions

Acquisitions

During the nine months ended September 30, 2020, Piedmont acquired three properties and adjacent developable land (collectively the "Dallas Galleria Office Towers") using cash on hand and available funds from the $500 Million Unsecured 2018 Line of Credit, as noted below:

Property	Metropolitan Statistical Area	Date of Acquisition	Ownership Percentage Acquired	Rentable Square Feet	Percentage Leased as of Acquisition	Net Contractual Purchase Price(1)(in millions)
Dallas Galleria Office Towers	Dallas, Texas	February 12, 2020	100%	1,435,466	95%	$396.2

(1)Price includes the purchase of an adjacent parcel of approximately 1.9 acres of developable land.

The purchase price of the Dallas Galleria Office Towers and undeveloped land, inclusive of approximately $0.6 million of closing costs, was allocated as follows:

	Dallas Galleria Office Towers and Undeveloped Land
Land	$	19,674
Building and improvements	293,760
Intangible lease assets (1)	49,177
Lease acquisition costs, net of tenant credits received from seller (1)	1,344
Intangible lease origination costs (1)	55,060
Intangible lease liabilities (1)	(22,169)
Total purchase price	$	396,846

(1)Amortization of in-place lease intangibles and lease acquisition costs are recognized using the straight-line method over approximately 5.2 years, the average remaining life of in-place leases.

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Debt

9 Months Ended

Sep. 30, 2020

Debt Disclosure [Abstract]

Debt

Debt

During the three months ended September 30, 2020, Piedmont issued, through its wholly owned operating partnership, Piedmont OP, $300 million in aggregate principal amount of 3.15% Senior Notes due 2030 (the “$300 Million Unsecured Senior Notes”), which mature on August 15, 2030. Upon issuance of the $300 Million Unsecured Senior Notes, Piedmont OP received proceeds of approximately $297.7 million, reflecting a discount of approximately $2.3 million which will be amortized as interest expense under the effective interest method over the ten-year term of the $300 Million Unsecured Senior Notes. In addition, in conjunction with the issuance, Piedmont settled four forward starting rate swaps, consisting of notional amounts of $200 million. These swaps were settled at a loss of approximately $19.9 million that was recorded as accumulated other comprehensive income and is being amortized as an increase in interest expense over the ten-year term of the $300 Million Unsecured Senior Notes. See Note 5 for further detail. The proceeds from the $300 Million Unsecured Senior Notes were used to fully repay the $300 Million Unsecured 2020 Term Loan that was obtained for the purchase of the Dallas Galleria Office Towers.

Additionally, during the nine months ended September 30, 2020, Piedmont amended the $250 Million Unsecured 2018 Term Loan to reduce the applicable interest rate spread from LIBOR plus 160 basis points to LIBOR plus 95 basis points, based on Piedmont's current credit rating.

Interest on the $300 Million Unsecured Senior Notes is payable semi-annually in arrears on February 15 and August 15 of each year, beginning on February 15, 2021. The $300 Million Unsecured Senior Notes are fully and unconditionally guaranteed on a senior unsecured basis by Piedmont. Piedmont OP may, at its option, redeem the $300 Million Unsecured Senior Notes, in whole or in part, prior to May 15, 2030, at a redemption price equal to the greater of (i) 100% of the principal amount of the $300 Million Unsecured Senior Notes to be redeemed and (ii) a “make-whole” amount, plus any unpaid accrued interest. In addition, at any time on or after May 15, 2030, Piedmont OP may, at its option, redeem the $300 Million Unsecured Senior Notes, in whole or in part, at a redemption price equal to 100% of the principal amount of the $300 Million Unsecured Senior Notes to be redeemed plus unpaid accrued interest. The $300 Million Unsecured Senior Notes are subject to certain typical covenants that, subject to certain exceptions: (a) limit the ability of Piedmont and Piedmont OP to, among other things, incur additional secured and unsecured indebtedness; (b) limit the ability of Piedmont and Piedmont OP to merge, consolidate, sell, lease or otherwise dispose of their properties and assets substantially as an entirety; and (c) require Piedmont to maintain a pool of unencumbered assets. The $300 Million Unsecured Senior Notes are also subject to customary events of default which, if any of them occurs, would permit or require the principal of and accrued interest on the $300 Million Unsecured Senior Notes to become or to be declared due and payable.

Finally, during the nine months ended September 30, 2020, Piedmont sold the 1901 Market Street building (see Note 8 for further details) and used the majority of the net sale proceeds to repay the $160 Million Fixed-Rate Loan that was secured by the property and all remaining outstanding borrowings under the $500 Million Unsecured 2018 Line of Credit. As a result of repaying the $160 Million Fixed-Rate Loan in advance of its stated maturity, Piedmont recognized a $9.3 million loss on early extinguishment of debt comprised of a prepayment penalty and unamortized deferred financing costs.

The following table summarizes the terms of Piedmont’s indebtedness outstanding as of September 30, 2020 and December 31, 2019 (in thousands):

Facility (1)	Stated Rate		Effective Rate (2)			Maturity		Amount Outstanding as of
								September 30, 2020		December 31, 2019
Secured (Fixed)
$35 Million Fixed-Rate Loan (3)	5.55	%	3.75	%		9/1/2021		$	27,976	$	28,687
$160 Million Fixed-Rate Loan (4)	3.48	%	3.58	%		7/5/2022		—		160,000
Net premium and unamortized debt issuance costs								448		343
Subtotal/Weighted Average (5)	5.55	%						28,424		189,030
Unsecured (Variable and Fixed)
Amended and Restated $300 Million Unsecured 2011 Term Loan (6)	LIBOR +  1.00%		1.16	%		11/30/2021		300,000		300,000
$500 Million Unsecured 2018 Line of Credit (6)	LIBOR + 0.90%		—	%		9/30/2022	(7)	—		—
$350 Million Unsecured Senior Notes	3.40	%	3.43	%		6/01/2023		350,000		350,000
$400 Million Unsecured Senior Notes	4.45	%	4.10	%		3/15/2024		400,000		400,000
$250 Million Unsecured 2018 Term Loan	LIBOR + 0.95%		2.08	%	(8)	3/31/2025		250,000		250,000
$300 Million Unsecured Senior Notes	3.15	%	3.90	%	(9)	8/15/2030		300,000		—
Discounts and unamortized debt issuance costs								(11,589)		(7,626)
Subtotal/Weighted Average (5)	2.99	%						1,588,411		1,292,374
Total/Weighted Average (5)	3.03	%						$	1,616,835	$	1,481,404

(1)Other than one mortgage, the $35 Million Fixed-Rate Loan, all of Piedmont’s outstanding debt as of September 30, 2020 and December 31, 2019 is interest-only until maturity.

(2)Effective rate after consideration of settled or in-place interest rate swap agreements, issuance premiums/discounts, and/or fair market value adjustments upon assumption of debt.

(3)Collateralized by the 5 Wall Street building in Burlington, Massachusetts.

(4)Previously collateralized by the 1901 Market Street building in Philadelphia, Pennsylvania.

(5)Weighted average is based on contractual balance of outstanding debt and the stated or effectively fixed interest rates as of September 30, 2020.

(6)On a periodic basis, Piedmont may select from multiple interest rate options, including the prime rate and various-length LIBOR locks on all or a portion of the principal. All LIBOR selections are subject to an additional spread over the selected rate based on Piedmont’s current credit rating.

(7)Piedmont may extend the term for up to one additional year (through two available six month extensions to a final extended maturity date of September 29, 2023) provided Piedmont is not then in default and upon payment of extension fees.

(8)The facility has a stated variable rate; however, Piedmont has entered into interest rate swap agreements which effectively fix, exclusive of changes to Piedmont's credit rating, $100 million of the principal balance to 3.56% through the maturity date of the loan. For the remaining variable portion of the loan, Piedmont may periodically select from multiple interest rate options, including the prime rate and various-length LIBOR locks on all or a portion of the principal. All LIBOR selections are subject to an additional spread over the selected rate based on Piedmont’s current credit rating. The rate presented is the weighted-average rate for the effectively fixed and variable portions of the debt outstanding as of September 30, 2020 (see Note 5 for more detail).

(9)The $300 Million Unsecured Senior Notes have a fixed coupon rate of 3.15%, however, as a result of the issuance of the notes at a discount, Piedmont recognizes an effective interest rate on this debt issuance of 3.24%. After consideration of the impact of settled interest rate swap agreements, in addition to the issuance discount, the effective interest rate on this debt is 3.90%.

Piedmont made interest payments on all debt facilities, including interest rate swap cash settlements, of approximately $12.8 million and $17.8 million for the three months ended September 30, 2020 and 2019, respectively, and approximately $41.8 million and $49.7 million for the nine months ended September 30, 2020 and 2019, respectively. Also, Piedmont capitalized interest of approximately $0.2 million and $0.5 million for the three months ended September 30, 2020 and 2019, respectively, and approximately $0.6 million and $1.6 million for the nine months ended September 30, 2020 and 2019, respectively. As of September 30, 2020, Piedmont believes it was in compliance with all financial covenants associated with its debt instruments.

See Note 6 for a description of Piedmont’s estimated fair value of debt as of September 30, 2020.

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Derivative Instruments

9 Months Ended

Sep. 30, 2020

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Derivative Instruments

Derivative Instruments

Risk Management Objective of Using Derivatives

In addition to operational risks which arise in the normal course of business, Piedmont is exposed to economic risks such as interest rate, liquidity, and credit risk. In certain situations, Piedmont has entered into derivative financial instruments such as interest rate swap agreements and other similar agreements to manage interest rate risk exposure arising from current or future variable rate debt transactions. Interest rate swap agreements involve the receipt or payment of future known and uncertain cash amounts, the value of which are determined by interest rates. Piedmont’s objective in using interest rate derivatives is to add stability to interest expense and to manage its exposure to interest rate movements.

Cash Flow Hedges of Interest Rate Risk

Interest rate swaps designated as cash flow hedges involve the receipt of variable-rate amounts from a counterparty in exchange for Piedmont making fixed-rate payments over the life of the agreements without exchange of the underlying notional amount.

During the nine months ended September 30, 2020, Piedmont entered into four forward starting interest rate swap agreements with a total notional value of $200 million to hedge the risk of changes in the interest-related cash flows associated with an expected issuance of long-term debt. In conjunction with the issuance of the $300 Million Unsecured Senior Notes (see Note 4), Piedmont settled these forward starting swap agreements for a loss of approximately $19.9 million. The loss was recorded as accumulated other comprehensive income and is being amortized as additional interest expense over the ten-year term of the $300 Million Unsecured Senior Notes. Further, as of September 30, 2020, Piedmont was party to two other interest rate swap agreements, which are designated as effective cash flow hedges and hedge the variable cash flows covering $100 million of the $250 Million Unsecured 2018 Term Loan. The maximum length of time over which Piedmont is hedging its exposure to the variability in future cash flows for forecasted transactions is 54 months.

A detail of Piedmont’s interest rate derivatives outstanding as of September 30, 2020 is as follows:

Interest Rate Derivatives:	Number of Swap Agreements	Associated Debt Instrument	Total Notional Amount (in millions)		Effective Date	Maturity Date
Interest rate swaps	2	$250 Million Unsecured 2018 Term Loan	$	100	3/29/2018	3/31/2025

Piedmont presents its interest rate derivatives on its consolidated balance sheets on a gross basis as interest rate swap assets and interest rate swap liabilities. A detail of Piedmont’s interest rate derivatives on a gross and net basis as of September 30, 2020 and December 31, 2019, respectively, is as follows (in thousands):

Interest rate swaps classified as:	September 30, 2020		December 31, 2019
Gross derivative assets	$	—	$	—
Gross derivative liabilities	(10,618)		(5,121)
Net derivative liability	$	(10,618)	$	(5,121)

The loss on Piedmont's interest rate derivatives, including previously settled forward swaps, that was recorded in other comprehensive income ("OCI") and the accompanying consolidated statements of income as a component of interest expense for the three and nine months ended September 30, 2020 and 2019, respectively, was as follows (in thousands):

	Three Months Ended				Nine Months Ended
Interest Rate Swaps in Cash Flow Hedging Relationships	September 30, 2020		September 30, 2019		September 30, 2020		September 30, 2019
Amount of loss recognized in OCI	$	(2,443)	$	(1,386)	$	(26,949)	$	(6,874)
Amount of previously recorded gain/(loss) reclassified from OCI into Interest Expense	$	(810)	$	427	$	(989)	$	1,871
Total amount of Interest Expense presented in the consolidated statements of income	$	(12,725)	$	(16,145)	$	(41,942)	$	(46,750)

Piedmont estimates that approximately $2.9 million will be reclassified from OCI as an increase in interest expense over the next twelve months. Piedmont recognized no hedge ineffectiveness on its cash flow hedges during the three and nine months ended September 30, 2020 and 2019, respectively.

Additionally, see Note 6 for fair value disclosures of Piedmont's derivative instruments.

Credit-risk-related Contingent Features

Piedmont has agreements with its derivative counterparties that contain a provision whereby if Piedmont defaults on any of its indebtedness, including default where repayment of the indebtedness has not been accelerated by the lender, then Piedmont could also be declared in default on its derivative obligations. If Piedmont were to breach any of the contractual provisions of the derivative contracts, it could be required to settle its liability obligations under the agreements at their termination value of the estimated fair values plus accrued interest, or approximately $11.0 million as of September 30, 2020. Additionally, Piedmont has rights of set-off under certain of its derivative agreements related to potential termination fees and amounts payable under the agreements, if a termination were to occur.

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Fair Value Measurement of Financial Instruments

9 Months Ended

Sep. 30, 2020

Fair Value Disclosures [Abstract]

Fair Value Measurement of Financial Instruments

Fair Value Measurement of Financial Instruments

Piedmont considers its cash and cash equivalents, tenant receivables, restricted cash and escrows, accounts payable and accrued expenses, interest rate swap agreements, and debt to meet the definition of financial instruments. The following table sets forth the carrying and estimated fair value for each of Piedmont’s financial instruments, as well as its level within the GAAP fair value hierarchy, as of September 30, 2020 and December 31, 2019, respectively (in thousands):

	September 30, 2020					December 31, 2019
Financial Instrument	Carrying Value		Estimated Fair Value		Level Within Fair Value Hierarchy	Carrying Value		Estimated Fair Value		Level Within Fair Value Hierarchy
Assets:
Cash and cash equivalents (1)	$	23,958	$	23,958	Level 1	$	13,545	$	13,545	Level 1
Tenant receivables, net of allowance for doubtful accounts (1)	$	11,301	$	11,301	Level 1	$	8,226	$	8,226	Level 1
Restricted cash and escrows (1)	$	1,781	$	1,781	Level 1	$	1,841	$	1,841	Level 1
Liabilities:
Accounts payable and accrued expenses (1)	$	10,874	$	10,874	Level 1	$	50,049	$	50,049	Level 1
Interest rate swaps	$	10,618	$	10,618	Level 2	$	5,121	$	5,121	Level 2
Debt, net	$	1,616,835	$	1,650,928	Level 2	$	1,481,404	$	1,536,687	Level 2

(1)For the periods presented, the carrying value of these financial instruments, net of applicable allowance, approximates estimated fair value due to their short-term maturity.

Piedmont's debt was carried at book value as of September 30, 2020 and December 31, 2019; however, Piedmont's estimate of its fair value is disclosed in the table above. Piedmont uses widely accepted valuation techniques including discounted cash

flow analysis based on the contractual terms of the debt facilities, including the period to maturity of each instrument, and uses observable market-based inputs for similar debt facilities which have transacted recently in the market. Therefore, the estimated fair values determined are considered to be based on significant other observable inputs (Level 2). Scaling adjustments are made to these inputs to make them applicable to the remaining life of Piedmont's outstanding debt. Piedmont has not changed its valuation technique for estimating the fair value of its debt.

Piedmont’s interest rate swap agreements presented above, and as further discussed in Note 5, are classified as “Interest rate swap” liabilities in the accompanying consolidated balance sheets and were carried at estimated fair value as of September 30, 2020 and December 31, 2019. The valuation of these derivative instruments was determined using widely accepted valuation techniques including discounted cash flow analysis based on the contractual terms of the derivatives, including the period to maturity of each instrument, and uses observable market-based inputs, including interest rate curves and implied volatilities. Therefore, the estimated fair values determined are considered to be based on significant other observable inputs (Level 2). In addition, Piedmont considered both its own and the respective counterparties’ risk of nonperformance in determining the estimated fair value of its derivative financial instruments by estimating the current and potential future exposure under the derivative financial instruments that both Piedmont and the counterparties were at risk for as of the valuation date. The credit risk of Piedmont and its counterparties was factored into the calculation of the estimated fair value of the interest rate swaps; however, as of September 30, 2020 and December 31, 2019, this credit valuation adjustment did not comprise a material portion of the estimated fair value. Therefore, Piedmont believes that any unobservable inputs used to determine the estimated fair values of its derivative financial instruments are not significant to the fair value measurements in their entirety, and does not consider any of its derivative financial instruments to be Level 3 liabilities.

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Commitments and Contingencies

9 Months Ended

Sep. 30, 2020

Commitments and Contingencies Disclosure [Abstract]

Commitments and Contingencies

Commitments and Contingencies

Commitments Under Existing Lease Agreements

As a recurring part of its business, Piedmont is typically required under its executed lease agreements to fund tenant improvements, leasing commissions, and building improvements. In addition, certain agreements contain provisions that require Piedmont to issue corporate or property guarantees to provide funding for capital improvements or other financial obligations. As of September 30, 2020, Piedmont had one individually significant unrecorded tenant allowance commitment of approximately $44.0 million for the approximately 20-year, 520,000 square foot renewal and expansion of one of Piedmont's largest tenants, the State of New York, at the 60 Broad Street building in New York City. This commitment will be accrued and capitalized as the related expenditures are incurred.

Contingencies Related to Tenant Audits/Disputes

Certain lease agreements include provisions that grant tenants the right to engage independent auditors to audit their annual operating expense reconciliations. Such audits may result in different interpretations of language in the lease agreements from that made by Piedmont, which could result in requests for refunds of previously recognized tenant reimbursement revenues, resulting in financial loss to Piedmont. There were no reductions in rental and reimbursement revenues related to such tenant audits/disputes during the nine months ended September 30, 2020 or 2019.

Contingencies Related to the COVID-19 Pandemic

During the third quarter of 2020, Piedmont continued to experience the repercussions of the COVID-19 pandemic including forced closures and other restrictions that have had a material adverse effect on the global economy and the regional U.S. economies in which Piedmont operates. Specifically, the pandemic and its impact on the U.S., as well as the global economy, has negatively impacted the trading price of Piedmont's common stock and some of Piedmont's tenants' ability to pay their rent. During the nine months ended September 30, 2020, Piedmont has entered into approximately 60 agreements with various tenants that primarily defer approximately $6.7 million of 2020 rent payments until either the fourth quarter of 2020 or into 2021. Further, Piedmont has established an approximately $4.8 million general reserve for potential collectibility issues; however, there can be no assurances that this amount will be sufficient to cover any future losses of rental income should these tenants be unable to pay back deferred rents when such rents become due.

Piedmont’s financial statements as of and for the nine months ended September 30, 2020 have been prepared in light of these circumstances. Piedmont has continued to follow the policies described in the footnotes to Piedmont’s Annual Report on Form 10-K for the year ended December 31, 2019, including those related to impairment of real estate assets and goodwill and estimates of the likelihood of collectibility of amounts due from tenants.

While the long-term impacts of the COVID-19 pandemic remain unknown, a prolonged economic downturn or recession resulting from the pandemic could adversely affect many of Piedmont's tenants which could, in turn, adversely impact Piedmont's business, financial condition and results of operations. Piedmont will continue to work closely with its tenants and address their concerns on a case-by-case basis, seeking solutions that address immediate cash flow interruptions while maintaining long term lease obligations.

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Assets Held for Sale

9 Months Ended

Sep. 30, 2020

Discontinued Operations and Disposal Groups [Abstract]

Assets Held for Sale and Property Disposition

Assets Held for Sale and Property Disposition

As of September 30, 2020, no properties met the criteria for held for sale classification; however, as of March 31, 2020, the 1901 Market Street building in Philadelphia, Pennsylvania, which sold June 2020, met the criteria for held for sale classification. Consequently its assets and liabilities as of December 31, 2019 were presented as held for sale for comparability in the accompanying consolidated balance sheets. In conjunction with the sale of 1901 Market Street, Piedmont recognized net sales proceeds of approximately $350.8 million resulting in gain on sale of real estate assets of approximately $191.0 million. During the nine months ended September 30, 2019, Piedmont reduced The Dupree building's carrying value to reflect its fair value, estimated based on the net contract price negotiated with an unrelated, third-party purchaser, and recognized an impairment loss of approximately $2.0 million. Piedmont closed on the sale of The Dupree building in September 2019.

	September 30, 2020		December 31, 2019
Real estate assets held for sale, net:
Land	$	—	$	20,829
Building and improvements, less accumulated depreciation of $0 and $66,823 as of September 30, 2020 and December 31, 2019, respectively	—		112,287
Intangible lease assets, less accumulated amortization of $0 and $27,438 as of September 30, 2020 and December 31, 2019, respectively	—		6,574
Total real estate assets held for sale, net	$	—	$	139,690
Other assets held for sale, net:
Straight-line rent receivables	$	—	$	18,776
Deferred lease costs, less accumulated amortization of $0 and $34,957 as of September 30, 2020 and December 31, 2019, respectively	—		9,425
Total other assets held for sale, net	$	—	$	28,201
Other liabilities held for sale:
Intangible lease liabilities, less accumulated amortization of $0 and $31,959 as of September 30, 2020 and December 31, 2019, respectively	$	—	$	7,657

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Stock Based Compensation

9 Months Ended

Sep. 30, 2020

Share-based Payment Arrangement [Abstract]

Stock Based Compensation

Stock Based Compensation

The Compensation Committee of Piedmont's Board of Directors has periodically granted deferred stock award units to all of Piedmont's employees and independent directors. Most employee awards are time-vested and typically vest ratably over a multi-year period and independent director awards vest over one year.

Certain management employees' long-term equity incentive program is split equally between the time-vested award units and a multi-year performance share program whereby the actual awards are contingent upon Piedmont's total stockholder return ("TSR") relative to a peer group of office REITs' TSR. The long-term equity incentives for these certain employees, as well as the peer group, is predetermined by the Board of Directors, advised by an outside compensation consultant. Any shares earned are awarded at the end of the multi-year performance period and vest upon award. The fair values of the multi-year performance share awards are estimated using a Monte Carlo valuation method.

A rollforward of Piedmont's equity based award activity for the nine months ended September 30, 2020 is as follows:

	Shares	Weighted-Average Grant Date Fair Value
Unvested and Potential Stock Awards as of December 31, 2019	1,045,020	$	25.15
Deferred Stock Awards Granted	242,586	$	22.39
Increase in Estimated Potential Share Award based on TSR Performance	26,586	$	27.47
Performance Stock Awards Vested	(153,368)	$	30.45
Deferred Stock Awards Vested	(228,478)	$	21.05
Deferred Stock Awards Forfeited	(6,979)	$	21.82
Unvested and Potential Stock Awards as of September 30, 2020	925,367	$	24.07

The following table provides additional information regarding stock award activity during the three and nine months ended September 30, 2020 and 2019, respectively (in thousands, except per share amounts):

	Three Months Ended				Nine Months Ended
	September 30, 2020		September 30, 2019		September 30, 2020		September 30, 2019
Weighted-Average Grant Date Fair Value per share of Deferred Stock Granted During the Period	$	—	$	—	$	22.39	$	21.02
Total Grant Date Fair Value of Deferred Stock Vested During the Period	$	200	$	—	$	4,808	$	8,658
Share-based Liability Awards Paid During the Period (1)	$	—	$	3,444	$	4,116	$	6,683

(1)Amounts reflect the issuance of performance share awards related to the 2017-19 and 2016-18 Performance Share Plans during the nine months ended September 30, 2020 and 2019, respectively, as well as performance share award liabilities settled in cash in July 2019 for retirement and separation associated with the senior management transition on June 30, 2019.

A detail of Piedmont’s outstanding stock awards as of September 30, 2020 is as follows:

Date of grant	Type of Award	Net Shares Granted (1)	Grant Date Fair Value		Vesting Schedule	Unvested Shares
May 17, 2018	Deferred Stock Award	250,680	$	17.84	Of the shares granted, 25% vested on the date of grant, and 25% vested or will vest on May 17, 2019, 2020, and 2021, respectively.	52,895
May 17, 2018	Fiscal Year 2018-2020 Performance Share Program	—	$	23.52	Shares awarded, if any, will vest immediately upon determination of award in 2021.	200,674	(2)
May 3, 2019	Deferred Stock Award	274,998	$	21.04	Of the shares granted, 25% vested on the date of grant, and 25% vested or will vest on May 3, 2020, 2021, and 2022, respectively.	134,173
May 3, 2019	Fiscal Year 2019-2021 Performance Share Program	—	$	29.43	Shares awarded, if any, will vest immediately upon determination of award in 2022.	181,527	(2)
February 19, 2020	Deferred Stock Award	178,309	$	24.41	Of the shares granted, 25% vested on the date of grant, and 25% vested or will vest on February 19, 2021, 2022, and 2023, respectively.	143,973
March 19, 2020	Fiscal Year 2020-2022 Performance Share Program	—	$	25.83	Shares awarded, if any, will vest immediately upon determination of award in 2023.	166,345	(2)
May 13, 2020	Deferred Stock Award-Board of Directors	45,780	$	13.76	Of the shares granted, 100% will vest by May 13, 2021.	45,780
Total						925,367

(1)Amounts reflect the total original grant to employees and independent directors, net of shares surrendered upon vesting to satisfy required minimum tax withholding obligations through September 30, 2020.

(2)Estimated based on Piedmont's cumulative TSR for the respective performance period through September 30, 2020. Share estimates are subject to change in future periods based upon Piedmont's relative performance compared to its peer group of office REITs' TSR.

During the three months ended September 30, 2020 and 2019, Piedmont recognized approximately $1.4 million and $3.8 million, respectively, of compensation expense related to stock awards, all of which is related to the amortization of unvested deferred shares and the fair value adjustment to performance shares. During the nine months ended September 30, 2020 and 2019, Piedmont recognized approximately $7.0 million and $12.0 million, respectively, of compensation expense related to stock awards of which $5.8 million and $10.5 million is related to the amortization of unvested deferred shares and the fair value adjustment to performance shares. During the nine months ended September 30, 2020, a net total of 245,354 shares were issued to employees and directors. As of September 30, 2020, approximately $7.5 million of unrecognized compensation cost related to unvested deferred stock awards remained, which Piedmont will record in its consolidated statements of income over a weighted-average vesting period of approximately one year.

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Supplemental Disclosures for the Statement of Consolidated Cash Flows

9 Months Ended

Sep. 30, 2020

Supplemental Cash Flow Elements [Abstract]

Supplemental Disclosures for the Statement of Consolidated Cash Flows

Supplemental Disclosures for the Statement of Consolidated Cash Flows

Certain non-cash investing and financing activities for the nine months ended September 30, 2020 and 2019, (in thousands) are outlined below:

	Nine Months Ended
	September 30, 2020		September 30, 2019
Accrued capital expenditures and deferred lease costs	$	24,035	$	29,828
Change in accrued dividends and discount on dividend reinvestments	$	(26,427)	$	(26,972)
Change in accrued share repurchases as part of an announced plan	$	—	$	(4,417)
Accrued deferred financing costs	$	130	$	—
Accrued stock issuance costs	$	—	$	441

The following table provides a reconciliation of cash, cash equivalents, and restricted cash and escrows as presented in the accompanying consolidated statements of cash flows for the nine months ended September 30, 2020 and 2019, to the consolidated balance sheets for the respective period (in thousands):

	2020		2019
Cash and cash equivalents as of January 1, 2020 and 2019, respectively	$	13,545	$	4,571
Restricted cash and escrows as of January 1, 2020 and 2019, respectively	1,841		1,463
Cash, cash equivalents, and restricted cash and escrows, beginning of period, as presented in the accompanying consolidated statement of cash flows	$	15,386	$	6,034
Cash and cash equivalents as of September 30, 2020 and 2019, respectively	$	23,958	$	10,284
Restricted cash and escrows as of September 30, 2020 and 2019, respectively	1,781		1,820
Cash, cash equivalents, and restricted cash and escrows, end of period, as presented in the accompanying consolidated statement of cash flows	$	25,739	$	12,104

Amounts in restricted cash and escrows typically represent escrow accounts for the payment of real estate taxes which are required under certain of Piedmont's debt agreements; earnest money deposited by a buyer to secure the purchase of one of Piedmont's properties; or security or utility deposits held for tenants as a condition of their lease agreement.

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Earnings Per Share

9 Months Ended

Sep. 30, 2020

Earnings Per Share [Abstract]

Earnings Per Share

Earnings Per Share

There are no adjustments to “Net income applicable to Piedmont” for the diluted earnings per share computations.

Net income per share-basic is calculated as net income available to common stockholders divided by the weighted average number of common shares outstanding during the period. Net income per share-diluted is calculated as net income available to common stockholders divided by the diluted weighted average number of common shares outstanding during the period, including unvested deferred stock awards. Diluted weighted average number of common shares reflects the potential dilution under the treasury stock method that would occur if the remaining unvested deferred stock awards vested and resulted in additional common shares outstanding. Unvested deferred stock awards which are determined to be anti-dilutive are not included in the calculation of diluted weighted average common shares. For the three months ended September 30, 2020 and 2019, Piedmont calculated and excluded weighted average outstanding anti-dilutive shares of 310,425 and 344, respectively, and for the nine months ended September 30, 2020 and 2019, Piedmont calculated and excluded weighted average outstanding anti-dilutive shares of 262,165 and 134,221, respectively.

The following table reconciles the denominator for the basic and diluted earnings per share computations shown on the consolidated statements of income for the three and nine months ended September 30, 2020 and 2019, respectively (in thousands):

	Three Months Ended		Nine Months Ended
	September 30, 2020	September 30, 2019	September 30, 2020	September 30, 2019
Weighted-average common shares – basic	126,029	125,783	125,955	125,684
Plus: Incremental weighted-average shares from time-vested deferred and performance stock awards	356	457	347	506
Weighted-average common shares – diluted	126,385	126,240	126,302	126,190

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Subsequent Events

9 Months Ended

Sep. 30, 2020

Subsequent Events [Abstract]

Subsequent Events

Subsequent Events

Fourth Quarter Dividend Declaration

On October 28, 2020, the Board of Directors of Piedmont declared a dividend for the fourth quarter of 2020 in the amount of $0.21 per common share outstanding to stockholders of record as of the close of business on November 27, 2020. Such dividend will be paid on January 4, 2021.

Subsequent to September 30, 2020, Piedmont sold a portfolio of three assets located in New Jersey: 600 Corporate Drive, located in Lebanon, New Jersey; and 200 and 400 Bridgewater Crossing, located in Bridgewater, New Jersey, for approximately $130 million, or $176 per square foot. Upon completion of the sale, Piedmont no longer owns properties in New Jersey.

Also subsequent to September 30, 2020, Piedmont acquired the 222 South Orange Avenue building, an approximately 127,000 square foot office building connected to Piedmont's 200 South Orange Avenue asset located in downtown Orlando, Florida, for $20 million, or $157 per square foot. The 222 South Orange Avenue building is located along the Orange Avenue entrance to Piedmont's existing 200 South Orange Avenue property, sharing several physical connection points, including an atrium. Piedmont plans to immediately begin a redevelopment of the property to reposition the asset to a standard consistent with 200 South Orange Avenue.

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Summary of Significant Accounting Policies (Policies)

9 Months Ended

Sep. 30, 2020

Accounting Policies [Abstract]

Basis of Presentation

The consolidated financial statements of Piedmont have been prepared in accordance with the rules and regulations of the Securities and Exchange Commission (the “SEC”), including the instructions to Form 10-Q and Article 10 of Regulation S-X, and do not include all of the information and footnotes required by GAAP for complete financial statements. In the opinion of management, the statements for the unaudited interim periods presented include all adjustments, which are of a normal and recurring nature, necessary for a fair presentation of the results for such periods. Results for these interim periods are not necessarily indicative of a full year’s results.

Principles of Consolidation

Piedmont’s consolidated financial statements include the accounts of Piedmont, Piedmont’s wholly-owned subsidiaries, any variable interest entity ("VIE") for which Piedmont or any of its wholly-owned subsidiaries is considered to have the power to direct the activities of the entity and the obligation to absorb losses/right to receive benefits, or any entity in which Piedmont or any of its wholly-owned subsidiaries owns a controlling interest. In determining whether Piedmont or Piedmont OP has a controlling interest, the following factors, among others, are considered: equity ownership, voting rights, protective rights of investors, and participatory rights of investors. For further information, refer to the financial statements and footnotes included in Piedmont’s Annual Report on Form 10-K for the year ended December 31, 2019.

All intercompany balances and transactions have been eliminated upon consolidation.

Further, Piedmont has formed special purpose entities to acquire and hold real estate. Each special purpose entity is a separate legal entity. Consequently, the assets of these special purpose entities are not available to all creditors of Piedmont. The assets owned by these special purpose entities are being reported on a consolidated basis with Piedmont’s assets for financial reporting purposes only.

Use of Estimates

Use of Estimates

The preparation of the accompanying consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the amounts reported in the accompanying consolidated financial statements and notes. The most significant of these estimates include the underlying cash flows and holding periods used in assessing impairment, judgements regarding the recoverability of goodwill, and the assessment of the collectibility of receivables. Future impacts of the COVID-19 pandemic on Piedmont and its tenants may affect these and other estimates used in the preparation of these financial statements. While Piedmont has made, what it believes to be, appropriate accounting estimates based on the facts and circumstances available as of the reporting date, actual results could materially differ from those estimates.

Income Taxes

Income Taxes

Piedmont has elected to be taxed as a REIT under the Internal Revenue Code of 1986, as amended, and has operated as such, beginning with its taxable year ended December 31, 1998. To qualify as a REIT, Piedmont must meet certain organizational and operational requirements, including a requirement to distribute at least 90% of its annual REIT taxable income. As a REIT, Piedmont is generally not subject to federal income taxes, subject to fulfilling, among other things, its taxable income distribution requirement. Piedmont is subject to certain taxes related to the operations of properties in certain locations, as well as operations conducted by its taxable REIT subsidiary, POH, which have been provided for in the financial statements.

Intangible Assets And Liabilities Resulting From Purchasing Real Estate Assets

Intangible Assets and Liabilities Resulting from Purchasing Real Estate Assets

Upon the acquisition of real properties, Piedmont allocates the purchase price of the properties to tangible assets, consisting of land, building, site improvements, and identified intangible assets and liabilities, including the value of in-place leases, based in each case on Piedmont's estimate of their fair values in accordance with Accounting Standards Codification ("ASC") 820 Fair Value Measurements.

Recent Accounting Pronouncements

Accounting Pronouncements and Amendments Adopted during the Nine Months Ended September 30, 2020

Reference Rate Reform Relief

Accounting Standards Update No. 2020-04, Reference Rate Reform (Topic 848) ("ASU 2020-04"), was issued in March 2020. ASU 2020-04 contains practical expedients for reference rate reform related activities that impact debt, leases, derivatives and other contracts. The guidance in ASU 2020-04 is optional and may be elected over time as reference rate reform activities occur. During the nine months ended September 30, 2020, Piedmont elected to apply the hedge accounting expedients related to probability and the assessments of effectiveness for future LIBOR-indexed cash flows to assume that the index upon which future hedged transactions will be based matches the index on the corresponding derivatives. Application of these expedients preserves the presentation of derivatives consistent with past presentation. Piedmont continues to evaluate the impact of the guidance and may apply other elections as applicable as additional changes in the market occur.

Financial Instruments- Credit Loss Amendments

On January 1, 2020, Piedmont adopted ASU No. 2016-13, Financial Instruments—Credit Losses (Topic 326), Measurement of Credit Losses on Financial Instruments, as well as ASU No. 2019-04, Codification Improvements to Topic 326, Financial Instruments - Credit Losses, Topic 815, Derivatives and Hedging, and Topic 825, Financial Instruments, and ASU No. 2019-05, Financial Instruments- Credit Losses: Targeted Transition Relief (collectively the "Credit Loss Amendments"). The provisions of the Credit Loss Amendments replace the "incurred loss" approach with an "expected loss" model for impairing trade and other receivables, held-to-maturity debt securities, net investment in leases, and off-balance-sheet credit exposures, which will generally result in earlier recognition of allowances for credit losses. However, the Financial Accounting Standards Board (the "FASB") also issued ASU No. 2018-19 Codification Improvements to Topic 326, Financial Instruments - Credit

Losses, which is effective concurrent with the Credit Loss Amendments, and excludes receivables arising from operating leases from the scope of the Credit Loss Amendments and affirms that such receivables should be evaluated for collectibility as prescribed by ASC 842 Leases. As substantially all of Piedmont's receivables are operating lease receivables there was no material impact to Piedmont's accompanying consolidated financial statements or disclosures as a result of adoption of the Credit Loss Amendments.

During the nine months ended September 30, 2020, the FASB issued a Staff Q&A on Topic 842 and Topic 840 (lease accounting guidance): Accounting for lease concessions related to the effects of the COVID-19 pandemic. Generally, changes to payment terms not contemplated by the lease contract should be accounted for under Topic 842 as a lease modification. The FASB staff has provided relief from this modification guidance through an accounting policy election, provided that changes to the payment terms do not result in a substantial increase in the rights of either the lessee or the lessor under the lease. Piedmont has elected not to apply the relief provided by the FASB Staff, and has instead accounted for all rent relief agreements as result of COVID-19 as lease modifications. See further details concerning rent relief agreements with Piedmont's tenants in Note 7 below.

Reclassifications

Certain prior period amounts presented in the accompanying consolidated balance sheets have been reclassified as of December 31, 2019 to conform to the current period financial statement presentation related to the 1901 Market Street building, which was classified as held for sale as of March 31, 2020, and sold on June 25, 2020. (see Note 8).

Risk Management Objective of Using Derivatives

Risk Management Objective of Using Derivatives

In addition to operational risks which arise in the normal course of business, Piedmont is exposed to economic risks such as interest rate, liquidity, and credit risk. In certain situations, Piedmont has entered into derivative financial instruments such as interest rate swap agreements and other similar agreements to manage interest rate risk exposure arising from current or future variable rate debt transactions. Interest rate swap agreements involve the receipt or payment of future known and uncertain cash amounts, the value of which are determined by interest rates. Piedmont’s objective in using interest rate derivatives is to add stability to interest expense and to manage its exposure to interest rate movements.

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Summary of Significant Accounting Policies (Tables)

9 Months Ended

Sep. 30, 2020

Accounting Policies [Abstract]

Fixed and Variable Lease Revenue

Piedmont recognized the following fixed and variable lease payments, which together comprised rental and tenant reimbursement revenue in the accompanying consolidated statements of income for the three and nine months ended September 30, 2020 and 2019, respectively, as follows (in thousands):

	Three Months Ended				Nine Months Ended
	September 30, 2020		September 30, 2019		September 30, 2020		September 30, 2019
Fixed payments	$	108,071	$	105,207	$	329,281	$	311,503
Variable payments	20,209		25,372		62,400		70,710
Total Rental and Tenant Reimbursement Revenue	$	128,280	$	130,579	$	391,681	$	382,213

Schedule of Intangible Lease Assets and Liabilities

Gross intangible lease assets and liabilities arising from in-place leases, inclusive of amounts classified as real estate assets held for sale, recorded at acquisition as of September 30, 2020 and December 31, 2019, respectively, are as follows (in thousands):

	September 30, 2020		December 31, 2019
Intangible Lease Assets:
Above-Market In-Place Lease Assets	$	2,227	$	2,082
In-Place Lease Valuation	$	159,643	$	157,101
Intangible Lease Origination Costs (included as component of Deferred Lease Costs)	$	254,856	$	256,627
Intangible Lease Liabilities (Below-Market In-Place Leases)	$	63,205	$	84,292

Amortization Of Intangible Lease Costs

For the three and nine months ended September 30, 2020 and 2019, respectively, Piedmont recognized amortization of intangible lease costs as follows (in thousands):

	Three Months Ended				Nine Months Ended
	September 30, 2020		September 30, 2019		September 30, 2020		September 30, 2019
Amortization of Intangible Lease Origination Costs and In-Place Lease Valuation included in amortization expense	$	18,522	$	15,881	$	58,674	$	45,057
Amortization of Above-Market and Below-Market In-Place Lease intangibles as a net increase to rental revenues	$	3,147	$	1,923	$	9,423	$	6,009

Future Amortization of Intangible Assets and Liabilities

Net intangible assets and liabilities as of September 30, 2020 will be amortized as follows (in thousands):

	Intangible Lease Assets
	Above-Market In-place Lease Assets		In-Place Lease Valuation		Intangible Lease Origination Costs (1)		Below-Market In-place Lease Liabilities
For the remainder of 2020	$	117	$	7,576	$	10,368	$	2,884
For the years ending December 31:
2021	420		27,635		38,743		10,899
2022	300		20,773		30,527		8,422
2023	103		13,923		21,019		5,139
2024	70		9,141		14,462		3,238
2025	6		5,658		10,069		2,072
Thereafter	18		12,777		24,881		5,670
	$	1,034	$	97,483	$	150,069	$	38,324
Weighted-Average Amortization Period (in years)	3		5		6		5

(1)Included as a component of Deferred Lease Costs in the accompanying consolidated balance sheets.

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Acquisitions (Tables)

9 Months Ended

Sep. 30, 2020

Property, Plant and Equipment [Abstract]

Schedule of Purchased Assets

During the nine months ended September 30, 2020, Piedmont acquired three properties and adjacent developable land (collectively the "Dallas Galleria Office Towers") using cash on hand and available funds from the $500 Million Unsecured 2018 Line of Credit, as noted below:

Property	Metropolitan Statistical Area	Date of Acquisition	Ownership Percentage Acquired	Rentable Square Feet	Percentage Leased as of Acquisition	Net Contractual Purchase Price(1)(in millions)
Dallas Galleria Office Towers	Dallas, Texas	February 12, 2020	100%	1,435,466	95%	$396.2

(1)Price includes the purchase of an adjacent parcel of approximately 1.9 acres of developable land.

Schedule of Purchase Price Allocation

The purchase price of the Dallas Galleria Office Towers and undeveloped land, inclusive of approximately $0.6 million of closing costs, was allocated as follows:

	Dallas Galleria Office Towers and Undeveloped Land
Land	$	19,674
Building and improvements	293,760
Intangible lease assets (1)	49,177
Lease acquisition costs, net of tenant credits received from seller (1)	1,344
Intangible lease origination costs (1)	55,060
Intangible lease liabilities (1)	(22,169)
Total purchase price	$	396,846

(1)Amortization of in-place lease intangibles and lease acquisition costs are recognized using the straight-line method over approximately 5.2 years, the average remaining life of in-place leases.

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Debt (Tables)

9 Months Ended

Sep. 30, 2020

Debt Disclosure [Abstract]

Schedule of Debt

The following table summarizes the terms of Piedmont’s indebtedness outstanding as of September 30, 2020 and December 31, 2019 (in thousands):

Facility (1)	Stated Rate		Effective Rate (2)			Maturity		Amount Outstanding as of
								September 30, 2020		December 31, 2019
Secured (Fixed)
$35 Million Fixed-Rate Loan (3)	5.55	%	3.75	%		9/1/2021		$	27,976	$	28,687
$160 Million Fixed-Rate Loan (4)	3.48	%	3.58	%		7/5/2022		—		160,000
Net premium and unamortized debt issuance costs								448		343
Subtotal/Weighted Average (5)	5.55	%						28,424		189,030
Unsecured (Variable and Fixed)
Amended and Restated $300 Million Unsecured 2011 Term Loan (6)	LIBOR +  1.00%		1.16	%		11/30/2021		300,000		300,000
$500 Million Unsecured 2018 Line of Credit (6)	LIBOR + 0.90%		—	%		9/30/2022	(7)	—		—
$350 Million Unsecured Senior Notes	3.40	%	3.43	%		6/01/2023		350,000		350,000
$400 Million Unsecured Senior Notes	4.45	%	4.10	%		3/15/2024		400,000		400,000
$250 Million Unsecured 2018 Term Loan	LIBOR + 0.95%		2.08	%	(8)	3/31/2025		250,000		250,000
$300 Million Unsecured Senior Notes	3.15	%	3.90	%	(9)	8/15/2030		300,000		—
Discounts and unamortized debt issuance costs								(11,589)		(7,626)
Subtotal/Weighted Average (5)	2.99	%						1,588,411		1,292,374
Total/Weighted Average (5)	3.03	%						$	1,616,835	$	1,481,404

(1)Other than one mortgage, the $35 Million Fixed-Rate Loan, all of Piedmont’s outstanding debt as of September 30, 2020 and December 31, 2019 is interest-only until maturity.

(2)Effective rate after consideration of settled or in-place interest rate swap agreements, issuance premiums/discounts, and/or fair market value adjustments upon assumption of debt.

(3)Collateralized by the 5 Wall Street building in Burlington, Massachusetts.

(4)Previously collateralized by the 1901 Market Street building in Philadelphia, Pennsylvania.

(5)Weighted average is based on contractual balance of outstanding debt and the stated or effectively fixed interest rates as of September 30, 2020.

(6)On a periodic basis, Piedmont may select from multiple interest rate options, including the prime rate and various-length LIBOR locks on all or a portion of the principal. All LIBOR selections are subject to an additional spread over the selected rate based on Piedmont’s current credit rating.

(7)Piedmont may extend the term for up to one additional year (through two available six month extensions to a final extended maturity date of September 29, 2023) provided Piedmont is not then in default and upon payment of extension fees.

(8)The facility has a stated variable rate; however, Piedmont has entered into interest rate swap agreements which effectively fix, exclusive of changes to Piedmont's credit rating, $100 million of the principal balance to 3.56% through the maturity date of the loan. For the remaining variable portion of the loan, Piedmont may periodically select from multiple interest rate options, including the prime rate and various-length LIBOR locks on all or a portion of the principal. All LIBOR selections are subject to an additional spread over the selected rate based on Piedmont’s current credit rating. The rate presented is the weighted-average rate for the effectively fixed and variable portions of the debt outstanding as of September 30, 2020 (see Note 5 for more detail).

(9)The $300 Million Unsecured Senior Notes have a fixed coupon rate of 3.15%, however, as a result of the issuance of the notes at a discount, Piedmont recognizes an effective interest rate on this debt issuance of 3.24%. After consideration of the impact of settled interest rate swap agreements, in addition to the issuance discount, the effective interest rate on this debt is 3.90%.

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Derivative Instruments (Tables)

9 Months Ended

Sep. 30, 2020

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Schedule of Notional Amounts of Outstanding Derivative Positions

A detail of Piedmont’s interest rate derivatives outstanding as of September 30, 2020 is as follows:

Interest Rate Derivatives:	Number of Swap Agreements	Associated Debt Instrument	Total Notional Amount (in millions)		Effective Date	Maturity Date
Interest rate swaps	2	$250 Million Unsecured 2018 Term Loan	$	100	3/29/2018	3/31/2025

Schedule of Interest Rate Derivatives

A detail of Piedmont’s interest rate derivatives on a gross and net basis as of September 30, 2020 and December 31, 2019, respectively, is as follows (in thousands):

Interest rate swaps classified as:	September 30, 2020		December 31, 2019
Gross derivative assets	$	—	$	—
Gross derivative liabilities	(10,618)		(5,121)
Net derivative liability	$	(10,618)	$	(5,121)

Schedule of Derivative Instruments, Effect on Other Comprehensive Income (Loss)

The loss on Piedmont's interest rate derivatives, including previously settled forward swaps, that was recorded in other comprehensive income ("OCI") and the accompanying consolidated statements of income as a component of interest expense for the three and nine months ended September 30, 2020 and 2019, respectively, was as follows (in thousands):

	Three Months Ended				Nine Months Ended
Interest Rate Swaps in Cash Flow Hedging Relationships	September 30, 2020		September 30, 2019		September 30, 2020		September 30, 2019
Amount of loss recognized in OCI	$	(2,443)	$	(1,386)	$	(26,949)	$	(6,874)
Amount of previously recorded gain/(loss) reclassified from OCI into Interest Expense	$	(810)	$	427	$	(989)	$	1,871
Total amount of Interest Expense presented in the consolidated statements of income	$	(12,725)	$	(16,145)	$	(41,942)	$	(46,750)

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Fair Value Measurement of Financial Instruments (Tables)

9 Months Ended

Sep. 30, 2020

Fair Value Disclosures [Abstract]

Fair Value, by Balance Sheet Grouping

The following table sets forth the carrying and estimated fair value for each of Piedmont’s financial instruments, as well as its level within the GAAP fair value hierarchy, as of September 30, 2020 and December 31, 2019, respectively (in thousands):

	September 30, 2020					December 31, 2019
Financial Instrument	Carrying Value		Estimated Fair Value		Level Within Fair Value Hierarchy	Carrying Value		Estimated Fair Value		Level Within Fair Value Hierarchy
Assets:
Cash and cash equivalents (1)	$	23,958	$	23,958	Level 1	$	13,545	$	13,545	Level 1
Tenant receivables, net of allowance for doubtful accounts (1)	$	11,301	$	11,301	Level 1	$	8,226	$	8,226	Level 1
Restricted cash and escrows (1)	$	1,781	$	1,781	Level 1	$	1,841	$	1,841	Level 1
Liabilities:
Accounts payable and accrued expenses (1)	$	10,874	$	10,874	Level 1	$	50,049	$	50,049	Level 1
Interest rate swaps	$	10,618	$	10,618	Level 2	$	5,121	$	5,121	Level 2
Debt, net	$	1,616,835	$	1,650,928	Level 2	$	1,481,404	$	1,536,687	Level 2

(1)For the periods presented, the carrying value of these financial instruments, net of applicable allowance, approximates estimated fair value due to their short-term maturity.

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Assets Held for Sale and Property Disposition (Tables)

9 Months Ended

Sep. 30, 2020

Discontinued Operations and Disposal Groups [Abstract]

Schedule of Assets Held for Sale

	September 30, 2020		December 31, 2019
Real estate assets held for sale, net:
Land	$	—	$	20,829
Building and improvements, less accumulated depreciation of $0 and $66,823 as of September 30, 2020 and December 31, 2019, respectively	—		112,287
Intangible lease assets, less accumulated amortization of $0 and $27,438 as of September 30, 2020 and December 31, 2019, respectively	—		6,574
Total real estate assets held for sale, net	$	—	$	139,690
Other assets held for sale, net:
Straight-line rent receivables	$	—	$	18,776
Deferred lease costs, less accumulated amortization of $0 and $34,957 as of September 30, 2020 and December 31, 2019, respectively	—		9,425
Total other assets held for sale, net	$	—	$	28,201
Other liabilities held for sale:
Intangible lease liabilities, less accumulated amortization of $0 and $31,959 as of September 30, 2020 and December 31, 2019, respectively	$	—	$	7,657

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Stock Based Compensation (Tables)

9 Months Ended

Sep. 30, 2020

Share-based Payment Arrangement [Abstract]

Schedule of Nonvested Share Activity

A rollforward of Piedmont's equity based award activity for the nine months ended September 30, 2020 is as follows:

	Shares	Weighted-Average Grant Date Fair Value
Unvested and Potential Stock Awards as of December 31, 2019	1,045,020	$	25.15
Deferred Stock Awards Granted	242,586	$	22.39
Increase in Estimated Potential Share Award based on TSR Performance	26,586	$	27.47
Performance Stock Awards Vested	(153,368)	$	30.45
Deferred Stock Awards Vested	(228,478)	$	21.05
Deferred Stock Awards Forfeited	(6,979)	$	21.82
Unvested and Potential Stock Awards as of September 30, 2020	925,367	$	24.07

The following table provides additional information regarding stock award activity during the three and nine months ended September 30, 2020 and 2019, respectively (in thousands, except per share amounts):

	Three Months Ended				Nine Months Ended
	September 30, 2020		September 30, 2019		September 30, 2020		September 30, 2019
Weighted-Average Grant Date Fair Value per share of Deferred Stock Granted During the Period	$	—	$	—	$	22.39	$	21.02
Total Grant Date Fair Value of Deferred Stock Vested During the Period	$	200	$	—	$	4,808	$	8,658
Share-based Liability Awards Paid During the Period (1)	$	—	$	3,444	$	4,116	$	6,683

(1)Amounts reflect the issuance of performance share awards related to the 2017-19 and 2016-18 Performance Share Plans during the nine months ended September 30, 2020 and 2019, respectively, as well as performance share award liabilities settled in cash in July 2019 for retirement and separation associated with the senior management transition on June 30, 2019.

Schedule of Outstanding Employee Stock Awards

A detail of Piedmont’s outstanding stock awards as of September 30, 2020 is as follows:

Date of grant	Type of Award	Net Shares Granted (1)	Grant Date Fair Value		Vesting Schedule	Unvested Shares
May 17, 2018	Deferred Stock Award	250,680	$	17.84	Of the shares granted, 25% vested on the date of grant, and 25% vested or will vest on May 17, 2019, 2020, and 2021, respectively.	52,895
May 17, 2018	Fiscal Year 2018-2020 Performance Share Program	—	$	23.52	Shares awarded, if any, will vest immediately upon determination of award in 2021.	200,674	(2)
May 3, 2019	Deferred Stock Award	274,998	$	21.04	Of the shares granted, 25% vested on the date of grant, and 25% vested or will vest on May 3, 2020, 2021, and 2022, respectively.	134,173
May 3, 2019	Fiscal Year 2019-2021 Performance Share Program	—	$	29.43	Shares awarded, if any, will vest immediately upon determination of award in 2022.	181,527	(2)
February 19, 2020	Deferred Stock Award	178,309	$	24.41	Of the shares granted, 25% vested on the date of grant, and 25% vested or will vest on February 19, 2021, 2022, and 2023, respectively.	143,973
March 19, 2020	Fiscal Year 2020-2022 Performance Share Program	—	$	25.83	Shares awarded, if any, will vest immediately upon determination of award in 2023.	166,345	(2)
May 13, 2020	Deferred Stock Award-Board of Directors	45,780	$	13.76	Of the shares granted, 100% will vest by May 13, 2021.	45,780
Total						925,367

(1)Amounts reflect the total original grant to employees and independent directors, net of shares surrendered upon vesting to satisfy required minimum tax withholding obligations through September 30, 2020.

(2)Estimated based on Piedmont's cumulative TSR for the respective performance period through September 30, 2020. Share estimates are subject to change in future periods based upon Piedmont's relative performance compared to its peer group of office REITs' TSR.

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Supplemental Disclosures for the Statement of Consolidated Cash Flows (Tables)

9 Months Ended

Sep. 30, 2020

Supplemental Cash Flow Elements [Abstract]

Schedule of Cash Flow, Supplemental Disclosures

Certain non-cash investing and financing activities for the nine months ended September 30, 2020 and 2019, (in thousands) are outlined below:

	Nine Months Ended
	September 30, 2020		September 30, 2019
Accrued capital expenditures and deferred lease costs	$	24,035	$	29,828
Change in accrued dividends and discount on dividend reinvestments	$	(26,427)	$	(26,972)
Change in accrued share repurchases as part of an announced plan	$	—	$	(4,417)
Accrued deferred financing costs	$	130	$	—
Accrued stock issuance costs	$	—	$	441

The following table provides a reconciliation of cash, cash equivalents, and restricted cash and escrows as presented in the accompanying consolidated statements of cash flows for the nine months ended September 30, 2020 and 2019, to the consolidated balance sheets for the respective period (in thousands):

	2020		2019
Cash and cash equivalents as of January 1, 2020 and 2019, respectively	$	13,545	$	4,571
Restricted cash and escrows as of January 1, 2020 and 2019, respectively	1,841		1,463
Cash, cash equivalents, and restricted cash and escrows, beginning of period, as presented in the accompanying consolidated statement of cash flows	$	15,386	$	6,034
Cash and cash equivalents as of September 30, 2020 and 2019, respectively	$	23,958	$	10,284
Restricted cash and escrows as of September 30, 2020 and 2019, respectively	1,781		1,820
Cash, cash equivalents, and restricted cash and escrows, end of period, as presented in the accompanying consolidated statement of cash flows	$	25,739	$	12,104

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Earnings Per Share (Tables)

9 Months Ended

Sep. 30, 2020

Earnings Per Share [Abstract]

Schedule of Weighted Average Number of Shares

The following table reconciles the denominator for the basic and diluted earnings per share computations shown on the consolidated statements of income for the three and nine months ended September 30, 2020 and 2019, respectively (in thousands):

	Three Months Ended		Nine Months Ended
	September 30, 2020	September 30, 2019	September 30, 2020	September 30, 2019
Weighted-average common shares – basic	126,029	125,783	125,955	125,684
Plus: Incremental weighted-average shares from time-vested deferred and performance stock awards	356	457	347	506
Weighted-average common shares – diluted	126,385	126,240	126,302	126,190

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Organization (Details) ft² in Millions	9 Months Ended
	Sep. 30, 2020 ft² property subsidiary segment	Feb. 12, 2020
Segment Reporting, Other Significant Reconciling Item [Line Items]
Number of major U.S. office markets	7
Number of wholly-owned subsidiaries | subsidiary	2
Number of real estate properties	57
Area of real estate property (in sq ft) | ft²	17.2
Percentage leased	86.90%	95.00%
Number of operating segments | segment	1
Piedmont Office Realty Trust, Inc.
Segment Reporting, Other Significant Reconciling Item [Line Items]
Percentage ownership by sole general partner	99.90%
Piedmont Office Holdings, Inc.
Segment Reporting, Other Significant Reconciling Item [Line Items]
Percentage ownership by sole limited partner	0.10%

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Summary of Significant Accounting Policies (Schedule of Fixed and Variable Lease Payments) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Accounting Policies [Abstract]
Fixed payments	$ 108,071	$ 105,207	$ 329,281	$ 311,503
Variable payments	20,209	25,372	62,400	70,710
Total Rental and Tenant Reimbursement Revenue	$ 128,280	$ 130,579	$ 391,681	$ 382,213

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Summary of Significant Accounting Policies (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Concentration Risk [Line Items]
Operating lease costs			$ 60	$ 60
Weighted-average lease term of right-of-use assets			3 years
Right of use assets weighted-average discount rate	3.35%		3.35%
Accounting Standards Update 2016-02
Concentration Risk [Line Items]
Operating lease costs	$ 20	$ 20

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Summary of Significant Accounting Policies (Schedule of Intangible Assets and Liabilities) (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Real Estate Properties [Line Items]
Intangible lease liabilities (below market in-place leases)	$ 63,205	$ 84,292
Above-Market In-Place Lease Assets
Real Estate Properties [Line Items]
Intangible lease assets	2,227	2,082
In-Place Lease Valuation
Real Estate Properties [Line Items]
Intangible lease assets	159,643	157,101
Intangible Lease Origination Costs (included as component of Deferred Lease Costs)
Real Estate Properties [Line Items]
Intangible lease assets	$ 254,856	$ 256,627

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Summary of Significant Accounting Policies (Amortization of Lease Costs) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Accounting Policies [Abstract]
Amortization of Intangible Lease Origination Costs and In-Place Lease Valuation included in amortization expense	$ 18,522	$ 15,881	$ 58,674	$ 45,057
Amortization of Above-Market and Below-Market In-Place Lease intangibles as a net increase to rental revenues	$ 3,147	$ 1,923	$ 9,423	$ 6,009

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Summary of Significant Accounting Policies (Future Amortization of Intangible Assets and Liabilities) (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2020	Dec. 31, 2019
Finite-Lived Intangible Assets, Amortization Expense, Maturity Schedule [Abstract]
Intangible lease assets, total	$ 98,517	$ 74,405
Below Market Lease, Amortization Income, Maturity Schedule [Abstract]
For the remainder of 2020	2,884
2021	10,899
2022	8,422
2023	5,139
2024	3,238
2025	2,072
Thereafter	5,670
Below market in-place lease liabilities, total	$ 38,324
Below market in-place lease liabilities, weighted average amortization period (in years)	5 years
Above-Market In-Place Lease Assets
Finite-Lived Intangible Assets, Amortization Expense, Maturity Schedule [Abstract]
For the remainder of 2020	$ 117
2021	420
2022	300
2023	103
2024	70
2025	6
Thereafter	18
Intangible lease assets, total	$ 1,034
Below Market Lease, Amortization Income, Maturity Schedule [Abstract]
Intangible lease assets, weighted average amortization period (in years)	3 years
In-Place Lease Valuation
Finite-Lived Intangible Assets, Amortization Expense, Maturity Schedule [Abstract]
For the remainder of 2020	$ 7,576
2021	27,635
2022	20,773
2023	13,923
2024	9,141
2025	5,658
Thereafter	12,777
Intangible lease assets, total	$ 97,483
Below Market Lease, Amortization Income, Maturity Schedule [Abstract]
Intangible lease assets, weighted average amortization period (in years)	5 years
Intangible Lease Origination Costs (included as component of Deferred Lease Costs)
Finite-Lived Intangible Assets, Amortization Expense, Maturity Schedule [Abstract]
For the remainder of 2020	$ 10,368
2021	38,743
2022	30,527
2023	21,019
2024	14,462
2025	10,069
Thereafter	24,881
Intangible lease assets, total	$ 150,069
Below Market Lease, Amortization Income, Maturity Schedule [Abstract]
Intangible lease assets, weighted average amortization period (in years)	6 years

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Acquisitions (Additional Information) (Details)	Feb. 12, 2020 USD ($) ft² a	Sep. 30, 2020 USD ($) ft² property
Property, Plant and Equipment [Line Items]
Rentable square feet (in sq ft) | ft²		17,200,000
Percentage leased as of acquisition	95.00%	86.90%
$500 Million Unsecured 2018 Line of Credit | Unsecured Debt
Property, Plant and Equipment [Line Items]
Face amount of debt instrument		$ 500,000,000
Dallas Galleria Office Towers
Property, Plant and Equipment [Line Items]
Number of properties acquired | property		3
Ownership percentage acquired	100.00%
Rentable square feet (in sq ft) | ft²	1,435,466
Net contractual purchase price	$ 396,200,000
Area of land acquired (in acres) | a	1.9
Closing costs	$ 600,000

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Acquisitions (Purchase Price Allocation) (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2020	Feb. 12, 2020	Dec. 31, 2019
Property, Plant and Equipment [Line Items]
Land	$ 505,228		$ 485,560
Dallas Galleria Office Towers
Property, Plant and Equipment [Line Items]
Land		$ 19,674
Building and improvements		293,760
Intangible lease assets		49,177
Lease acquisition costs, net of tenant credits received from seller		1,344
Intangible lease organization costs		55,060
Intangible lease liabilities		(22,169)
Total purchase price		$ 396,846
Acquired intangible assets, remaining amortization period	5 years 2 months 12 days

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Debt (Narrative) (Details)	1 Months Ended	3 Months Ended		9 Months Ended		12 Months Ended
	Aug. 31, 2020 USD ($)	Sep. 30, 2020 USD ($) contract	Sep. 30, 2019 USD ($)	Sep. 30, 2020 USD ($) contract	Sep. 30, 2019 USD ($)	Dec. 31, 2019
Debt Instrument [Line Items]
Loss on early extinguishment of debt		$ 0	$ 0	$ 9,336,000	$ 0
Interest paid		12,800,000	17,800,000	41,800,000	49,700,000
Interest costs capitalized		$ 200,000	$ 500,000	$ 600,000	$ 1,600,000
Forward starting interest rate swaps
Debt Instrument [Line Items]
Number of swap agreements | contract		4		4
Notional amount of interest rate swap agreements		$ 200,000,000		$ 200,000,000
Cash paid to settle interest rate swap agreements	$ 19,900,000
Unsecured Debt | $300 Million Unsecured 2020 Term Loan
Debt Instrument [Line Items]
Face amount of debt instrument		300,000,000		300,000,000
$300 Million 2020 Senior Notes | Unsecured Debt
Debt Instrument [Line Items]
Face amount of debt instrument	$ 300,000,000	300,000,000		$ 300,000,000
Stated rate (percent)	3.15%
Proceeds from issuance of debt	$ 297,700,000
Debt instrument, discount	$ 2,300,000
Debt instrument, term	10 years
Debt instrument, redemption price, percentage				100.00%
$250 Million Unsecured 2018 Term Loan | London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Basis spread on variable rate (percent)				0.95%		1.60%
$250 Million Unsecured 2018 Term Loan | Unsecured Debt
Debt Instrument [Line Items]
Face amount of debt instrument		250,000,000		$ 250,000,000
$250 Million Unsecured 2018 Term Loan | Unsecured Debt | London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Basis spread on variable rate (percent)				0.95%
$160 Million Fixed Rate Loan | Secured Debt
Debt Instrument [Line Items]
Face amount of debt instrument		$ 160,000,000		$ 160,000,000
Stated rate (percent)		3.48%		3.48%
$500 Million Unsecured 2018 Line of Credit | Unsecured Debt
Debt Instrument [Line Items]
Face amount of debt instrument		$ 500,000,000		$ 500,000,000
$500 Million Unsecured 2018 Line of Credit | Unsecured Debt | London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Basis spread on variable rate (percent)				0.90%

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Debt (Schedule of Debt) (Details)	9 Months Ended	12 Months Ended
	Sep. 30, 2020 USD ($) extension	Dec. 31, 2019 USD ($)	Aug. 31, 2020 USD ($)
Debt Instrument [Line Items]
Weighted average rate (percent)	3.03%
Amount outstanding	$ 1,616,835,000	$ 1,481,404,000
$250 Million Unsecured 2018 Term Loan | London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Basis spread on variable rate (percent)	0.95%	1.60%
Secured Debt
Debt Instrument [Line Items]
Weighted average rate (percent)	5.55%
Amount outstanding	$ 28,424,000	$ 189,030,000
Net premium (discounts) and unamortized debt issuance costs	448,000	343,000
Secured Debt | $35 Million Fixed-Rate Loan
Debt Instrument [Line Items]
Face amount of debt instrument	$ 35,000,000	35,000,000
Stated rate (percent)	5.55%
Effective interest rate (percent)	3.75%
Amount outstanding	$ 27,976,000	28,687,000
Secured Debt | $160 Million Fixed Rate Loan
Debt Instrument [Line Items]
Face amount of debt instrument	$ 160,000,000
Stated rate (percent)	3.48%
Effective interest rate (percent)	3.58%
Amount outstanding	$ 0	160,000,000
Unsecured Debt
Debt Instrument [Line Items]
Weighted average rate (percent)	2.99%
Amount outstanding	$ 1,588,411,000	1,292,374,000
Net premium (discounts) and unamortized debt issuance costs	(11,589,000)	(7,626,000)
Unsecured Debt | Amended and Restated $300 Million Unsecured 2011 Term Loan
Debt Instrument [Line Items]
Face amount of debt instrument	$ 300,000,000
Effective interest rate (percent)	1.16%
Amount outstanding	$ 300,000,000	300,000,000
Unsecured Debt | Amended and Restated $300 Million Unsecured 2011 Term Loan | London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Basis spread on variable rate (percent)	1.00%
Unsecured Debt | $500 Million Unsecured 2018 Line of Credit
Debt Instrument [Line Items]
Face amount of debt instrument	$ 500,000,000
Maximum extension period (in years)	1 year
Number of extension periods | extension	2
Extension period (in months)	6 months
Unsecured Debt | $500 Million Unsecured 2018 Line of Credit | London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Basis spread on variable rate (percent)	0.90%
Unsecured Debt | $500 Million Unsecured 2018 Line of Credit | Line of Credit
Debt Instrument [Line Items]
Effective interest rate (percent)	0.00%
Amount outstanding	$ 0	0
Unsecured Debt | $350 Million Unsecured Senior Notes
Debt Instrument [Line Items]
Face amount of debt instrument	$ 350,000,000
Stated rate (percent)	3.40%
Effective interest rate (percent)	3.43%
Amount outstanding	$ 350,000,000	350,000,000
Unsecured Debt | $400 Million Unsecured Senior Notes
Debt Instrument [Line Items]
Face amount of debt instrument	$ 400,000,000
Stated rate (percent)	4.45%
Effective interest rate (percent)	4.10%
Amount outstanding	$ 400,000,000	400,000,000
Unsecured Debt | $250 Million Unsecured 2018 Term Loan
Debt Instrument [Line Items]
Face amount of debt instrument	$ 250,000,000
Effective interest rate (percent)	2.08%
Amount outstanding	$ 250,000,000	250,000,000
Interest rate on derivative instrument	3.56%
Unsecured Debt | $250 Million Unsecured 2018 Term Loan | London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Basis spread on variable rate (percent)	0.95%
Unsecured Debt | $300 Million 2020 Senior Notes
Debt Instrument [Line Items]
Face amount of debt instrument	$ 300,000,000		$ 300,000,000
Stated rate (percent)			3.15%
Effective interest rate (percent)	3.90%		3.24%
Amount outstanding	$ 300,000,000	$ 0
Interest rate swaps | $250 Million Unsecured 2018 Term Loan
Debt Instrument [Line Items]
Notional amount of interest rate swap agreements	$ 100,000,000

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Derivative Instruments (Narrative) (Details)	1 Months Ended	9 Months Ended
	Aug. 31, 2020 USD ($)	Sep. 30, 2020 USD ($) contract
Derivative [Line Items]
Maximum period of extension term		54 months
Gain (loss) to be reclassified		$ 2,900,000
Assets needed for immediate settlement, aggregate fair value		11,000,000.0
$300 Million 2020 Senior Notes | Unsecured Debt
Derivative [Line Items]
Face amount of debt instrument	$ 300,000,000	300,000,000
Debt instrument, term	10 years
$250 Million Unsecured 2018 Term Loan | Unsecured Debt
Derivative [Line Items]
Face amount of debt instrument		250,000,000
Piedmont OP | $300 Million 2020 Senior Notes | Unsecured Debt
Derivative [Line Items]
Face amount of debt instrument		$ 300,000,000
Debt instrument, term		10 years
Forward starting interest rate swaps
Derivative [Line Items]
Number of swap agreements | contract		4
Notional amount of interest rate swap agreements		$ 200,000,000
Cash paid to settle interest rate swap agreements	$ 19,900,000
Interest rate swaps | $250 Million Unsecured 2018 Term Loan
Derivative [Line Items]
Number of swap agreements | contract		2
Notional amount of interest rate swap agreements		$ 100,000,000
Interest rate swaps | $250 Million Unsecured 2018 Term Loan | Unsecured Debt
Derivative [Line Items]
Face amount of debt instrument		250,000,000
Hedged portion of long-term debt		$ 100,000,000

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Derivative Instruments (Details)	3 Months Ended		9 Months Ended
	Sep. 30, 2020 USD ($) contract	Sep. 30, 2019 USD ($)	Sep. 30, 2020 USD ($) contract	Sep. 30, 2019 USD ($)	Dec. 31, 2019 USD ($)
Interest rate swaps classified as:
Gross derivative assets	$ 0		$ 0		$ 0
Gross derivative liabilities	(10,618,000)		(10,618,000)		(5,121,000)
Net derivative liability	(10,618,000)		(10,618,000)		$ (5,121,000)
Amount of loss recognized in OCI	(2,443,000)	$ (1,386,000)	(26,949,000)	$ (6,874,000)
Total amount of Interest Expense presented in the consolidated statements of income	(12,725,000)	(16,145,000)	(41,942,000)	(46,750,000)
Interest rate swaps
Interest rate swaps classified as:
Total amount of Interest Expense presented in the consolidated statements of income	(12,725,000)	(16,145,000)	(41,942,000)	(46,750,000)
Interest rate swaps | Interest Expense
Interest rate swaps classified as:
Amount of loss recognized in OCI	(2,443,000)	(1,386,000)	(26,949,000)	(6,874,000)
Amount of previously recorded gain/(loss) reclassified from OCI into Interest Expense	(810,000)	$ 427,000	(989,000)	$ 1,871,000
$250 Million Unsecured 2018 Term Loan | Unsecured Debt
Derivative [Line Items]
Face amount of debt instrument	$ 250,000,000		$ 250,000,000
$250 Million Unsecured 2018 Term Loan | Interest rate swaps
Derivative [Line Items]
Number of swap agreements | contract	2		2
Notional amount	$ 100,000,000		$ 100,000,000
$250 Million Unsecured 2018 Term Loan | Interest rate swaps | Unsecured Debt
Derivative [Line Items]
Face amount of debt instrument	$ 250,000,000		$ 250,000,000

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Fair Value Measurement of Financial Instruments (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Interest rate swaps	$ 10,618	$ 5,121
Carrying Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	23,958	13,545
Restricted cash and escrows	1,781	1,841
Accounts payable and accrued expenses	10,874	50,049
Debt, net	1,616,835	1,481,404
Tenant receivables, net of allowance for doubtful accounts | Carrying Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Receivables	11,301	8,226
Level 1 | Estimated Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	23,958	13,545
Restricted cash and escrows	1,781	1,841
Accounts payable and accrued expenses	10,874	50,049
Level 1 | Tenant receivables, net of allowance for doubtful accounts | Estimated Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Receivables	11,301	8,226
Level 2 | Estimated Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt, net	1,650,928	1,536,687
Interest rate swaps | Carrying Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Interest rate swaps	10,618	5,121
Interest rate swaps | Level 2 | Estimated Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Interest rate swaps	$ 10,618	$ 5,121

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Commitments and Contingencies (Details) ft² in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020 USD ($) ft² numberOfTenants Joint_Venture	Sep. 30, 2019 USD ($)	Sep. 30, 2020 USD ($) ft² numberOfTenants Joint_Venture	Sep. 30, 2019 USD ($)
Loss Contingencies [Line Items]
Number of unrecorded tenant allowance commitments | Joint_Venture	1		1
Unrecorded tenant allowance commitment	$ 44,000,000.0		$ 44,000,000.0
Unrecorded tenant allowance renewal term			20 years
Unrecorded tenant allowance expansion area (in sq. ft) | ft²	520		520
Contingencies Related to COVID-19 Pandemic
Loss Contingencies [Line Items]
Number of tenants with lease modification agreements | numberOfTenants	60		60
Current year revenue deferred due to lease modification agreements			$ 6,700,000
Charges against lease income, general reserves			4,800,000
Collectibility of Tenant Reimbursements
Loss Contingencies [Line Items]
Reductions in reimbursement revenues	$ 0	$ 0	$ 0	$ 0

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Assets Held for Sale and Property Disposition (Details) $ in Thousands	1 Months Ended	3 Months Ended		9 Months Ended
	Jun. 30, 2020 USD ($)	Sep. 30, 2020 USD ($) property	Sep. 30, 2019 USD ($)	Sep. 30, 2020 USD ($) property	Sep. 30, 2019 USD ($)	Dec. 31, 2019 USD ($)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of properties held for sale | property		0		0
Impairment loss on real estate assets		$ 0	$ 1,953	$ 0	$ 1,953
Accumulated amortization (intangible lease assets)		63,353		63,353		$ 50,766
Total other assets held for sale, net		0		0		28,201
Intangible lease liabilities, less accumulated amortization of $0 and $31,959 as of September 30, 2020 and December 31, 2019, respectively		0		0		7,657
Intangible lease liabilities, accumulated amortization		24,881		24,881		19,607
1901 Market Street
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Proceeds from sale of property	$ 350,800
Gain on sale of real estate assets	$ 191,000
The Dupree
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Impairment loss on real estate assets					$ 2,000
Disposal Group, Held-for-sale, Not Discontinued Operations
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Total real estate assets held for sale, net		0		0		139,690
Straight-line rent receivables		0		0		18,776
Deferred lease costs, less accumulated amortization of $0 and $34,957 as of September 30, 2020 and December 31, 2019, respectively		0		0		9,425
Accumulated amortization on deferred lease costs		0		0		34,957
Total other assets held for sale, net		0		0		28,201
Intangible lease liabilities, less accumulated amortization of $0 and $31,959 as of September 30, 2020 and December 31, 2019, respectively		0		0		7,657
Intangible lease liabilities, accumulated amortization		0		0		31,959
Disposal Group, Held-for-sale, Not Discontinued Operations | Intangible lease assets
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Intangible lease assets, less accumulated amortization of $0 and $27,438 as of September 30, 2020 and December 31, 2019, respectively		0		0		6,574
Accumulated amortization (intangible lease assets)		0		0		27,438
Disposal Group, Held-for-sale, Not Discontinued Operations | Land
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Real estate assets held for sale, net		0		0		20,829
Disposal Group, Held-for-sale, Not Discontinued Operations | Building and building improvements
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Real estate assets held for sale, net		0		0		112,287
Accumulated depreciation (building improvements)		$ 0		$ 0		$ 66,823

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Stock Based Compensation (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expense related to stock awards	$ 1.4	$ 3.8	$ 7.0	$ 12.0
Amortization of unvested shares			$ 5.8	$ 10.5
Total shares issued to employees, directors, and officers (in shares)			245,354
Unrecognized compensation cost related to nonvested	$ 7.5		$ 7.5
Weighted Average
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation cost related to nonvested, weighted-average vesting period			1 year
Independent Director Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period			1 year

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Stock Based Compensation (Rollforward of Stock Awards) (Details) - $ / shares	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Shares
Increase in estimated potential share award based on TSR performance (in shares)			26,586
Unvested and potential stock awards, end of period (in shares)	925,367		925,367
Weighted-Average Grant Date Fair Value
Increase in estimated potential share award (in dollars per share)			$ 27.47
Stock Awards
Shares
Unvested and potential stock awards, beginning of period (in shares)			1,045,020
Unvested and potential stock awards, end of period (in shares)	925,367		925,367
Weighted-Average Grant Date Fair Value
Unvested and potential stock awards, beginning of period (in dollars per share)			$ 25.15
Unvested and potential stock awards, end of period (in dollars per share)	$ 24.07		$ 24.07
Deferred Stock Awards
Shares
Deferred stock awards granted (in shares)			242,586
Stock awards vested (in shares)			(228,478)
Deferred stock awards forfeited (in shares)			(6,979)
Weighted-Average Grant Date Fair Value
Deferred stock awards granted (in dollars per share)	$ 0	$ 0	$ 22.39	$ 21.02
Stock awards vested (in dollars per share)			21.05
Deferred stock awards forfeited (in dollars per share)			$ 21.82
Performance Share Awards
Shares
Stock awards vested (in shares)			(153,368)
Weighted-Average Grant Date Fair Value
Stock awards vested (in dollars per share)			$ 30.45

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Stock Based Compensation (Additional Information Regarding Stock Award Activity) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Deferred Stock Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted-Average Grant Date Fair Value per share of Deferred Stock Granted During the Period (in dollars per share)	$ 0	$ 0	$ 22.39	$ 21.02
Total Grant Date Fair Value of Deferred Stock Vested During the Period	$ 200	$ 0	$ 4,808	$ 8,658
Performance Share Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Liability Awards Paid During the Period	$ 0	$ 3,444	$ 4,116	$ 6,683

XML

Stock Based Compensation (Outstanding Employee Stock Awards) (Details) - $ / shares	May 13, 2020	Feb. 19, 2020	May 03, 2019	May 17, 2018	Sep. 30, 2020	Mar. 19, 2020	Dec. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unvested shares (in shares)					925,367
Stock Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grant date fair value (in dollars per share)					$ 24.07		$ 25.15
Unvested shares (in shares)					925,367		1,045,020
Deferred Stock Awards | Deferred Stock Award, Granted May 17, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Net Shares Granted (in shares)				250,680
Grant date fair value (in dollars per share)				$ 17.84
Unvested shares (in shares)					52,895
Deferred Stock Awards | Deferred Stock Award, Granted May 17, 2018 | Year 1
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage				25.00%
Deferred Stock Awards | Deferred Stock Award, Granted May 17, 2018 | Year 2
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage				25.00%
Deferred Stock Awards | Deferred Stock Award, Granted May 17, 2018 | Year 3
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage				25.00%
Deferred Stock Awards | Deferred Stock Award, Granted May 17, 2018 | Year 4
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage				25.00%
Deferred Stock Awards | Deferred Stock Award, Granted May 3, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Net Shares Granted (in shares)			274,998
Grant date fair value (in dollars per share)			$ 21.04
Unvested shares (in shares)					134,173
Deferred Stock Awards | Deferred Stock Award, Granted May 3, 2019 | Year 1
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage			25.00%
Deferred Stock Awards | Deferred Stock Award, Granted May 3, 2019 | Year 2
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage			25.00%
Deferred Stock Awards | Deferred Stock Award, Granted May 3, 2019 | Year 3
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage			25.00%
Deferred Stock Awards | Deferred Stock Award, Granted May 3, 2019 | Year 4
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage			25.00%
Deferred Stock Awards | Deferred Stock Award, Granted February 19, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Net Shares Granted (in shares)		178,309
Grant date fair value (in dollars per share)		$ 24.41
Unvested shares (in shares)					143,973
Deferred Stock Awards | Deferred Stock Award, Granted February 19, 2020 | Year 1
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage		25.00%
Deferred Stock Awards | Deferred Stock Award, Granted February 19, 2020 | Year 2
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage		25.00%
Deferred Stock Awards | Deferred Stock Award, Granted February 19, 2020 | Year 3
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage		25.00%
Deferred Stock Awards | Deferred Stock Award, Granted February 19, 2020 | Year 4
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage		25.00%
Deferred Stock Awards | Deferred Stock Award, Granted May 13, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Net Shares Granted (in shares)	45,780
Grant date fair value (in dollars per share)	$ 13.76
Vesting percentage	100.00%
Unvested shares (in shares)					45,780
Performance Share Awards | Performance Share Program Award, Granted May 17, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Net Shares Granted (in shares)				0
Grant date fair value (in dollars per share)				$ 23.52
Unvested shares (in shares)					200,674
Performance Share Awards | Performance Share Program Award, Granted May 3, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Net Shares Granted (in shares)			0
Grant date fair value (in dollars per share)			$ 29.43
Unvested shares (in shares)					181,527
Performance Share Awards | Performance Share Program Award, Granted March 19, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Net Shares Granted (in shares)						0
Grant date fair value (in dollars per share)						$ 25.83
Unvested shares (in shares)					166,345

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Supplemental Disclosures for the Statement of Consolidated Cash Flows (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019	Dec. 31, 2018
Supplemental Cash Flow Elements [Abstract]
Accrued capital expenditures and deferred lease costs	$ 24,035	$ 29,828
Change in accrued dividends and discount on dividend reinvestments	(26,427)	(26,972)
Change in accrued share repurchases as part of an announced plan	0	(4,417)
Accrued deferred financing costs	130	0
Accrued stock issuance costs	0	441
Cash and cash equivalents	23,958	10,284	$ 13,545	$ 4,571
Restricted cash and escrows	1,781	1,820	1,841	1,463
Total cash, cash equivalents, and restricted cash and escrows shown in the consolidated statement of cash flows	$ 25,739	$ 12,104	$ 15,386	$ 6,034

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Earnings Per Share (Details) - shares	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Earnings Per Share [Abstract]
Anti-dilutive shares excluded (in shares)	310,425	344	262,165	134,221
Weighted-average common shares – basic (in shares)	126,028,762	125,783,408	125,955,097	125,684,202
Plus: Incremental weighted-average shares from time-vested deferred and performance stock awards (in shares)	356,000	457,000	347,000	506,000
Weighted-average common shares – diluted (in shares)	126,385,035	126,239,744	126,302,051	126,189,851

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Subsequent Events (Details) $ / shares in Units, ft² in Thousands, $ in Millions		1 Months Ended
	Oct. 28, 2020 $ / shares	Oct. 29, 2020 USD ($) ft² property $ / ft²	Sep. 30, 2020 ft²
Subsequent Event [Line Items]
Area of real estate property (in sq ft) | ft²			17,200
Subsequent Event
Subsequent Event [Line Items]
Common stock dividends (in dollars per share) | $ / shares	$ 0.21
Subsequent Event | 222 South Orange Avenue Building
Subsequent Event [Line Items]
Area of real estate property (in sq ft) | ft²		127
Payments to acquire real estate property | $		$ 20
Payments to acquire real estate property (in dollars per sq ft) | $ / ft²		157
Subsequent Event | New Jersey Assets
Subsequent Event [Line Items]
Number of assets disposed of | property		3
Proceeds from sale of property | $		$ 130
Proceeds from sale of real estate, proceeds (in dollars per sq ft) | $ / ft²		176