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, 2019

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)

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  ☒ 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 29, 2019:

125,783,408 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—September 30, 2019 (unaudited) and December 31, 2018	6
		Consolidated Statements of Income for the Three and Nine Months Ended September 30, 2019 (unaudited) and 2018 (unaudited)	7
		Consolidated Statements of Comprehensive Income for the Three and Nine Months Ended September 30, 2019 (unaudited) and 2018 (unaudited)	8
		Consolidated Statements of Stockholders' Equity for the Three and Nine Months Ended September 30, 2019 (unaudited) and 2018 (unaudited)	9
		Consolidated Statements of Cash Flows for the Nine Months Ended September 30, 2019 (unaudited) and 2018 (unaudited)	11
		Condensed Notes to Consolidated Financial Statements (unaudited)	12
	Item 2.	Management’s Discussion and Analysis of Financial Condition and Results of Operations.	37
	Item 3.	Quantitative and Qualitative Disclosures About Market Risk.	49
	Item 4.	Controls and Procedures.	50
PART II.	Other Information
	Item 1.	Legal Proceedings.	51
	Item 1A.	Risk Factors.	51
	Item 2.	Unregistered Sales of Equity Securities and Use of Proceeds.	51
	Item 3.	Defaults Upon Senior Securities.	51
	Item 4.	Mine Safety Disclosures.	51
	Item 5.	Other Information.	52
	Item 6.	Exhibits.	52

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:

•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 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 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 potential 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;

•Changes in the financial condition of our tenants directly or indirectly resulting from geopolitical developments that could negatively affect international trade, including the United Kingdom's referendum to withdraw 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;

3

•Changes in tax laws impacting real estate investment trusts ("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 factors discussed under Item 1A. of our Annual Report on Form 10-K for the year ended December 31, 2018.

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) 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 is currently 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 un-leased 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/re-development properties, 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, 2018. Piedmont’s results of operations for the nine months ended September 30, 2019 are not necessarily indicative of the operating results expected for the full year.

5

PIEDMONT OFFICE REALTY TRUST, INC.

CONSOLIDATED BALANCE SHEETS

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

	(Unaudited)
	September 30, 2019		December 31, 2018
Assets:
Real estate assets, at cost:
Land	$	506,440	$	470,432
Buildings and improvements, less accumulated depreciation of $772,122 and $718,070 as of September 30, 2019 and December 31, 2018, respectively	2,327,055		2,121,570
Intangible lease assets, less accumulated amortization of $77,483 and $87,391 as of September 30, 2019 and December 31, 2018, respectively	88,371		77,676
Construction in progress	13,866		15,848
Real estate assets held for sale, net	213,094		331,068
Total real estate assets	3,148,826		3,016,594
Cash and cash equivalents	10,284		4,571
Tenant receivables	10,091		10,800
Straight-line rent receivables	147,197		136,762
Restricted cash and escrows	1,820		1,463
Prepaid expenses and other assets	27,143		24,691
Goodwill	98,918		98,918
Interest rate swaps	—		1,199
Deferred lease costs, less accumulated amortization of $173,490 and $176,919 as of September 30, 2019 and December 31, 2018, respectively	267,616		236,198
Other assets held for sale, net	40,036		61,233
Total assets	$	3,751,931	$	3,592,429
Liabilities:
Unsecured debt, net of discount and unamortized debt issuance costs of $8,207 and $9,879 as of September 30, 2019 and December 31, 2018, respectively	$	1,689,793	$	1,495,121
Secured debt, net of premiums and unamortized debt issuance costs of $418 and $645 as of September 30, 2019 and December 31, 2018, respectively	189,451		190,351
Accounts payable, accrued expenses and accrued capital expenditures	114,812		93,739
Dividends payable	—		26,972
Deferred income	27,985		28,779
Intangible lease liabilities, less accumulated amortization of $49,613 and $59,144 as of September 30, 2019 and December 31, 2018, respectively	34,970		35,708
Interest rate swaps	6,862		839
Other liabilities held for sale	7,275		8,780
Total liabilities	2,071,148		1,880,289
Commitments and Contingencies (Note 8)	—		—
Stockholders’ Equity:
Shares-in-trust, 150,000,000 shares authorized; none outstanding as of September 30, 2019 or December 31, 2018	—		—
Preferred stock, no par value, 100,000,000 shares authorized; none outstanding as of September 30, 2019 or December 31, 2018	—		—
Common stock, $0.01 par value, 750,000,000 shares authorized; 125,783,408 and 126,218,554 shares issued and outstanding as of September 30, 2019 and December 31, 2018, respectively	1,258		1,262
Additional paid-in capital	3,685,504		3,683,186
Cumulative distributions in excess of earnings	(2,007,438)		(1,982,542)
Other comprehensive income/(loss)	(283)		8,462
Piedmont stockholders’ equity	1,679,041		1,710,368
Noncontrolling interest	1,742		1,772
Total stockholders’ equity	1,680,783		1,712,140
Total liabilities and stockholders’ equity	$	3,751,931	$	3,592,429

See accompanying notes

6

PIEDMONT OFFICE REALTY TRUST, INC.

CONSOLIDATED STATEMENTS OF INCOME

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

	(Unaudited)				(Unaudited)
	Three Months Ended				Nine Months Ended
	September 30,				September 30,
	2019		2018		2019		2018
Revenues:
Rental and tenant reimbursement revenue	$	130,579	$	124,518	$	382,213	$	372,491
Property management fee revenue	405		368		2,819		1,059
Other property related income	4,437		4,822		13,993		15,232
	135,421		129,708		399,025		388,782
Expenses:
Property operating costs	54,613		49,679		158,798		154,175
Depreciation	27,131		26,852		80,004		81,112
Amortization	19,505		14,840		55,666		46,818
Impairment loss on real estate assets	1,953		—		1,953		—
General and administrative	7,950		6,677		29,736		21,487
	111,152		98,048		326,157		303,592
Other income (expense):
Interest expense	(16,145)		(15,849)		(46,750)		(45,294)
Other income	263		303		1,292		1,480
Loss on extinguishment of debt	—		—		—		(1,680)
Gain on sale of real estate assets	32		—		39,370		45,186
	(15,850)		(15,546)		(6,088)		(308)
Net income	8,419		16,114		66,780		84,882
Net loss applicable to noncontrolling interest	3		—		3		4
Net income applicable to Piedmont	$	8,422	$	16,114	$	66,783	$	84,886
Per share information – basic and diluted:
Net income applicable to common stockholders	$	0.07	$	0.13	$	0.53	$	0.65
Weighted-average common shares outstanding – basic	125,783,408		128,371,062		125,684,202		130,837,223
Weighted-average common shares outstanding – diluted	126,239,744		128,818,658		126,189,851		131,187,127

See accompanying notes

7

PIEDMONT OFFICE REALTY TRUST, INC.

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME

(in thousands)

	(Unaudited)						(Unaudited)
	Three Months Ended						Nine Months Ended
	September 30,						September 30,
	2019			2018			2019			2018
Net income applicable to Piedmont		$	8,422		$	16,114		$	66,783		$	84,886
Other comprehensive income/(loss):
Effective portion of gain/(loss) on derivative instruments that are designated and qualify as cash flow hedges (See Note 5)	(1,386)			1,144			(6,874)			4,408
Plus/(less): Reclassification of net loss/(gain) included in net income (See Note 5)	(427)			(434)			(1,871)			373
Other comprehensive income/(loss)		(1,813)			710			(8,745)			4,781
Comprehensive income applicable to Piedmont		$	6,609		$	16,824		$	58,038		$	89,667

See accompanying notes

8

PIEDMONT OFFICE REALTY TRUST, INC.

CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ EQUITY

FOR THE THREE AND NINE MONTHS ENDED SEPTEMBER 30, 2019 (UNAUDITED)

(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, 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)
Dividends to common stockholders ($0.21 per share), stockholders of subsidiaries, and dividends reinvested	—	—		(48)		(26,375)		—		(7)		(26,430)
Shares issued and amortized under the 2007 Omnibus Incentive Plan, net of tax	106	1		2,879		—		—		—		2,880
Net income applicable to noncontrolling interest	—	—		—		—		—		1		1
Net income applicable to Piedmont	—	—		—		50,208		—		—		50,208
Other comprehensive loss	—	—		—		—		(2,795)		—		(2,795)
Balance, March 31, 2019	125,597	$	1,256	$	3,686,017	$	(1,971,184)	$	5,667	$	1,766	$	1,723,522
Dividends to common stockholders ($0.21 per share), stockholders of subsidiaries, and dividends reinvested	—	—		(94)		(26,415)		—		(13)		(26,522)
Shares issued and amortized under the 2007 Omnibus Incentive Plan, net of tax	186	2		1,958		—		—		—		1,960
Net loss applicable to noncontrolling interest	—	—		—		—		—		(1)		(1)
Net income applicable to Piedmont	—	—		—		8,153		—		—		8,153
Other comprehensive loss	—	—		—		—		(4,137)		—		(4,137)
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 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

9

PIEDMONT OFFICE REALTY TRUST, INC.

CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ EQUITY

FOR THE THREE AND NINE MONTHS ENDED SEPTEMBER 30, 2018 (UNAUDITED)

(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, 2017	142,359	$	1,424	$	3,677,360	$	(1,702,281)	$	8,164	$	1,822	$	1,986,489
Cumulative effect of accounting change (adoption of ASU 2016-01)	—	—		—		94		(94)		—		—
Share repurchases as part of an announced plan	(12,482)	(125)		—		(231,763)		—		—		(231,888)
Dividends to common stockholders ($0.21 per share), stockholders of subsidiaries, and dividends reinvested	—	—		(19)		(28,284)		—		(8)		(28,311)
Shares issued and amortized under the 2007 Omnibus Incentive Plan, net of tax	148	1		2,900		—		—		—		2,901
Net loss applicable to noncontrolling interest	—	—		—		—		—		(2)		(2)
Net income applicable to Piedmont	—	—		—		57,830		—		—		57,830
Other comprehensive income	—	—		—		—		2,569		—		2,569
Balance, March 31, 2018	130,025	$	1,300	$	3,680,241	$	(1,904,404)	$	10,639	$	1,812	$	1,789,588
Share repurchases as part of an announced plan	(1,861)	(18)		—		(32,879)		—		—		(32,897)
Dividends to common stockholders ($0.21 per share), stockholders of subsidiaries, and dividends reinvested	—	—		(32)		(26,950)		—		(15)		(26,997)
Shares issued and amortized under the 2007 Omnibus Incentive Plan, net of tax	207	2		918		—		—		—		920
Net loss applicable to noncontrolling interest	—	—		—		—		—		(2)		(2)
Net income applicable to Piedmont	—	—		—		10,942		—		—		10,942
Other comprehensive income	—	—		—		—		1,502		—		1,502
Balance, June 30, 2018	128,371	$	1,284	$	3,681,127	$	(1,953,291)	$	12,141	$	1,795	$	1,743,056
Dividends to common stockholders ($0.21 per share), stockholders of subsidiaries, and dividends reinvested	—	—		(5)		(26,958)				(8)		(26,971)
Shares issued and amortized under the 2007 Omnibus Incentive Plan, net of tax	—	—		1,087		—		—		—		1,087
Net income applicable to Piedmont	—	—		—		16,114		—		—		16,114
Other comprehensive income	—	—		—		—		710		—		710
Balance, September 30, 2018	128,371	$	1,284	$	3,682,209	$	(1,964,135)	$	12,851	$	1,787	$	1,733,996

See accompanying notes

10

PIEDMONT OFFICE REALTY TRUST, INC.

CONSOLIDATED STATEMENTS OF CASH FLOWS

(in thousands) 

	(Unaudited)
	Nine Months Ended
	September 30,
	2019		2018
Cash Flows from Operating Activities:
Net income	$	66,780	$	84,882
Operating distributions received from unconsolidated joint ventures	—		10
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	80,004		81,112
Amortization of debt issuance costs net of favorable settlement of interest rate swaps	419		(215)
Other amortization	52,057		42,882
Impairment loss on real estate assets	1,953		—
Loss on extinguishment of debt	—		1,665
Stock compensation expense	12,365		6,671
Gain on sale of real estate assets	(39,370)		(45,186)
Changes in assets and liabilities:
Increase in tenant and straight-line rent receivables	(10,660)		(12,361)
Increase in prepaid expenses and other assets	(1,958)		(8,496)
Decrease in accounts payable and accrued expenses	(2,496)		(10,377)
Increase/(decrease) in deferred income	1,149		(2,265)
Net cash provided by operating activities	160,243		138,322
Cash Flows from Investing Activities:
Acquisition of real estate assets and intangibles	(326,144)		(28,176)
Capitalized expenditures	(57,368)		(44,998)
Net sales proceeds from wholly-owned properties	180,975		419,554
Note receivable issuance	—		(3,200)
Deferred lease costs paid	(16,632)		(15,831)
Net cash (used in)/provided by investing activities	(219,169)		327,349
Cash Flows from Financing Activities:
Debt issuance and other costs paid	(91)		(947)
Proceeds from debt	550,000		820,061
Repayments of debt	(358,041)		(833,005)
Costs of issuance of common stock	(259)		—
Value of shares withheld for payment of taxes related to employee stock compensation	(3,295)		(2,219)
Repurchases of common stock as part of announced plan	(16,899)		(266,062)
Dividends paid and discount on dividend reinvestments	(106,419)		(184,073)
Net cash provided by/(used in) financing activities	64,996		(466,245)
Net increase/(decrease) in cash, cash equivalents, and restricted cash and escrows	6,070		(574)
Cash, cash equivalents, and restricted cash and escrows, beginning of period	6,034		8,755
Cash, cash equivalents, and restricted cash and escrows, end of period	$	12,104	$	8,181

See accompanying notes

11

PIEDMONT OFFICE REALTY TRUST, INC.

CONDENSED NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

SEPTEMBER 30, 2019

(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 seven major office markets in the Eastern-half of the United States, 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, 2019, Piedmont owned 55 in-service office properties and one 487,000-square foot redevelopment asset primarily in select sub-markets located within seven major office markets: Atlanta, Boston, Dallas, Minneapolis, New York, Orlando, and Washington, D.C. As of September 30, 2019, Piedmont's 55 in-service office properties comprised approximately 17.0 million square feet of primarily Class A commercial office space and were 91.9% 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, 2018.

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. Actual results could 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.

Accounting Pronouncements Adopted during the Nine Months Ended September 30, 2019

Leases

During the nine months ended September 30, 2019, Piedmont adopted Accounting Standards Update ("ASU") No. 2016-02, Leases (Topic 842), as well as various associated updates and amendments, which together comprise the requirements for lease accounting under Accounting Standards Codification 842 ("ASC 842"). ASC 842 fundamentally changed the definition of a lease, as well as the accounting for operating leases, by requiring lessees to recognize a liability to make lease payments and a right-of-use asset representing the right to use the leased asset over the term of the lease. ASC 842 also prohibits the capitalization of internal direct salary costs associated with negotiating and executing leases. Accounting for leases by lessors is substantially unchanged from prior practice as lessors continue to recognize lease revenue on a straight-line basis.

In conjunction with the adoption of ASC 842, Piedmont adopted the following optional practical expedients, transition amendments, or made accounting policy elections as follows:

•a package of optional practical expedients which precluded: (1) the reassessment of any expired or existing contracts to determine if they contain a lease or to determine lease classification; and (2) the write-off of any unamortized, previously capitalized, initial direct costs for any existing leases;

•an optional practical transition expedient provided by ASU No. 2018-01 which allowed Piedmont to exclude certain land easements in place as of January 1, 2019 from the new guidance;

•an optional practical expedient provided by ASU No. 2018-11 which allows certain non-lease operating expense reimbursements which are included in the underlying stated lease rate to be accounted for as part of an operating lease where Piedmont is the lessor;

•a transitional amendment which allows for the presentation of comparative periods in the year of adoption under ASC 840 (the former leasing guidance), effectively allowing for an initial adoption of ASC 842 (the new leasing guidance) on January 1, 2019 (the "Comparatives Under ASC 840 Option");

•an accounting policy election allowed by ASC 842 related to a recognition and measurement exception for short-term leases (defined as leases which are 12 months or less in duration) where Piedmont is the lessee. Piedmont's short-term lease expense reasonably reflects its lease commitments under such leases; and

•an accounting policy election allowed by ASU No. 2018-20 which permits Piedmont to exclude sales and other similar taxes from analysis to ascertain whether they are Piedmont's primary obligation (as lessor), and instead exclude such costs from revenue and account for them as costs of the lessee.

The nature of Piedmont's change in accounting principle relates primarily to its accounting for operating leases where Piedmont is a lessee for office space, as prescribed by ASC 842. Due to the adoption of the practical expedients outlined above, Piedmont has not adjusted prior-period information retrospectively, and there is a negligible decrease in net income attributable to Piedmont as a result of accounting for leases where Piedmont is the lessee under ASC 842 as compared to prior operating lease accounting.

Operating leases where Piedmont is the lessee relate primarily to office space in buildings owned by third parties. Piedmont recorded a right to use asset and corresponding lease liability of approximately $0.2 million using Piedmont's incremental

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borrowing rate as the lease discount rate. For the three and nine months ended September 30, 2019, Piedmont recognized approximately $18,000 and $55,000 of operating lease costs, respectively. As of September 30, 2019, the weighted-average lease term of Piedmont's right of use assets is two years, and the weighted-average discount rate is 3.35%.

Piedmont evaluates contracts at commencement to determine if the contract contains a lease. If a contract is determined to contain a lease, the lease is evaluated to determine whether it is an operating or a financing lease. All of Piedmont's leases where Piedmont is the lessor are for the lessee's use of space in Piedmont's commercial office properties and are classified as operating leases. Lease payments are typically comprised of both fixed base rental payments and separately billed variable lease payments for reimbursement of services performed by Piedmont for the tenant as prescribed by the lease. Fixed base rental payments, as well as any fixed portion of reimbursement income, are recognized on a straight-line basis over the lease term. Tenant reimbursements are recognized as revenue in the period that the related operating cost is incurred. The option to extend or terminate our leases is specific to each underlying tenant agreement; however, generally Piedmont's leases contain penalties for early terminations. None of Piedmont's leases convey the right for the lessee to purchase the underlying property; however, certain leases convey the right of first offer or first refusal on the potential sale of the underlying real estate to the lessee.

Piedmont's future minimum lease payments from lessees under non-cancelable operating leases where Piedmont is the lessor as of September 30, 2019 is presented below (in thousands):

Years ending December 31:
2019 (1)	$	98,831
2020	382,738
2021	373,740
2022	357,475
2023	323,709
Thereafter	1,433,272
Total	$	2,969,765

⁽¹⁾Reflects rental payments for the fiscal period October 1, 2019 through December 31, 2019.

As required under the Comparatives Under ASC 840 Option described above, Piedmont's future minimum rental income from lessees under non-cancelable operating leases where Piedmont is the lessor as of December 31, 2018 is also presented below (in thousands):

Years ending December 31:
2019	$	370,495
2020	352,541
2021	337,951
2022	324,960
2023	291,603
Thereafter	1,247,649
Total	$	2,925,199

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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, 2019, respectively, as follows (in thousands):

	Three Months Ended		Nine Months Ended
	September 30, 2019		September 30, 2019
Fixed payments	$	105,207	$	311,503
Variable payments	25,372		70,710
Total Rental and Tenant Reimbursement Revenue	$	130,579	$	382,213

Additionally, ASU No. 2018-19 clarifies that operating lease receivables are within the scope of ASC 842; therefore, in accordance with ASC 842, effective January 1, 2019, Piedmont elected to evaluate the collectibility of its operating lease receivables on a tenant/lease-specific basis and began recognizing changes in the collectibility assessment of its operating lease receivables as a reduction of rental and tenant reimbursement revenue, rather than as a bad debt expense, a component of property operating costs. Consequently, during the three and nine months ended September 30, 2019, Piedmont recognized approximately $65,000 and $24,000 of uncollectible operating lease receivables as a decrease in rental and reimbursement revenue, respectively, and during the three and nine months ended September 30, 2018, Piedmont recognized approximately $0 and $84,000 of expense related to uncollectible operating lease receivables as additional property operating costs, respectively.

Stock Compensation to Non-employees

During the nine months ended September 30, 2019, Piedmont adopted ASU No. 2018-07, Stock Compensation (Topic 718), Improvements to Non-employee Share-Based Payment Accounting ("ASU 2018-07"). The provisions of ASU 2018-07 align accounting for stock based compensation for non-employees for goods and services with existing accounting for similar compensation for employees. ASU 2018-07 requires an entity to remeasure liability-classified awards that have not been settled by the date of adoption and equity-classified awards for which a measurement date has not been established through a cumulative-effect adjustment to retained earnings as of January 1, 2019. Piedmont's only awards affected by ASU 2018-07 are equity-classified award grants to its independent board of directors, which have been historically recognized in the same manner prescribed by the newly adopted standard. As such, there was no cumulative effect adjustment recognized upon adoption.

Reclassifications

Although Piedmont has adopted the transitional amendment under ASC 842 described above, Piedmont has combined the presentation of rental income and tenant reimbursements in the accompanying consolidated statements of income for the prior periods to conform to the current period financial presentation under presentation guidance detailed in Accounting Standards Codification 205 Presentation of Financial Statements. These amounts included the presentation of approximately $101.3 million of rental income, and $23.2 million of tenant reimbursements for the three months ended September 30, 2018 as rental and tenant reimbursement revenue of $124.5 million. For the nine months ended September 30, 2018, these amounts included the presentation of approximately $304.3 million of rental income, and $68.2 million of tenant reimbursements as rental and tenant reimbursement revenue of $372.5 million. Further, we intend to make a similar reclassification for the years ended December 31, 2018 and 2017 in our Form 10-K for the year ending December 31, 2019. We will present approximately $411.7 million of rental income and $92.7 million of tenant reimbursements for the year ended December 31, 2018 as rental and tenant reimbursement revenue of $504.4 million. We will present approximately $455.1 million of rental income and $98.2 million of tenant reimbursements for the year ended December 31, 2017 as rental and tenant reimbursement revenue of $553.3 million. Finally, the subtotal of Revenues less Expenses was removed within the accompanying consolidated statements of income for the three and nine months ended September 30, 2018 to correct the prior period presentation, and will also be removed from prior annual periods in subsequent filings.

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Other Recent Accounting Pronouncements

The FASB has issued 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. Additionally, the provisions change the classification of credit losses related to available-for-sale securities to an allowance, rather than a direct reduction of the amortized cost of the securities. Further, the FASB has 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. Both ASU 2018-19 and the Credit Loss Amendments are effective in the first quarter of 2020, with early adoption permitted as of January 1, 2019. Piedmont is currently evaluating the potential impact of adoption; however, substantially all of Piedmont's receivables are operating lease receivables and as such, Piedmont does not anticipate any material impact to its consolidated financial statements as a result of adoption of the Credit Loss Amendments and ASU 2018-19.

3. Acquisitions

During the nine months ended September 30, 2019, Piedmont acquired three properties and adjacent developable land using cash on hand and proceeds 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)
Galleria 100	Atlanta, Georgia	May 6, 2019	100	%	414,293	91	%	$	95.1
Galleria 400 and 600	Atlanta, Georgia	August 23, 2019	100	%	863,623	84	%	$	231.2

⁽¹⁾Price for both acquisitions includes the purchase of adjacent parcels of developable land, totaling approximately 11.7 acres.

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4. Debt

The following table summarizes the terms of Piedmont’s indebtedness outstanding as of September 30, 2019 and December 31, 2018 (in thousands):

Facility (1)	Stated Rate		Effective Rate (2)			Maturity		Amount Outstanding as of
								September 30, 2019		December 31, 2018
Secured (Fixed)
$35 Million Fixed-Rate Loan (3)	5.55	%	3.75	%		9/1/2021		$	29,033	$	29,706
$160 Million Fixed-Rate Loan (4)	3.48	%	3.58	%		7/5/2022		160,000		160,000
Net premium and unamortized debt issuance costs								418		645
Subtotal/Weighted Average (5)	3.80	%						189,451		190,351
Unsecured (Variable and Fixed)
Amended and Restated $300 Million Unsecured 2011 Term Loan	LIBOR +  1.00%		3.20	%	(7)	11/30/2021		300,000		300,000
$500 Million Unsecured 2018 Line of Credit (6)	LIBOR + 0.90%		2.95	%		9/30/2022	(8)	398,000		205,000
$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 + 1.60%		3.93	%	(9)	3/31/2025		250,000		250,000
Discounts and unamortized debt issuance costs								(8,207)		(9,879)
Subtotal/Weighted Average (5)	3.58	%						1,689,793		1,495,121
Total/Weighted Average (5)	3.61	%						$	1,879,244	$	1,685,472

⁽¹⁾Other than the $35 Million Fixed-Rate Loan, all of Piedmont’s outstanding debt as of September 30, 2019 and December 31, 2018 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⁾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, 2019.

⁽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⁾The facility has a stated variable rate; however, Piedmont has entered into interest rate swap agreements which effectively fix, exclusive of changes in Piedmont's credit rating, the rate to that shown as the effective rate through the maturity date of the interest rate swap agreements (see Note 5 for more detail).

⁽⁸⁾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.

⁽⁹⁾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, $150 million of the principal balance to 4.11% through March 29, 2020, and $100 million of the principal balance to 4.21% from March 30, 2020 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, 2019 (see Note 5 for more detail).

Piedmont made interest payments on all debt facilities, including interest rate swap cash settlements, of approximately $17.8 million and $18.0 million for the three months ended September 30, 2019 and 2018, respectively, and approximately $49.7

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million and $48.7 million for the nine months ended September 30, 2019 and 2018, respectively. Also, Piedmont capitalized interest of approximately $0.5 million and $0.4 million for the three months ended September 30, 2019 and 2018, respectively, and approximately $1.6 million and $0.8 million for the nine months ended September 30, 2019 and 2018, respectively. As of September 30, 2019, 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, 2019.

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.

As of September 30, 2019, Piedmont was party to interest rate swap agreements, all of which are designated as effective cash flow hedges and fully hedge the variable cash flows covering the entire outstanding balance of the Amended and Restated $300 Million Unsecured 2011 Term Loan, and $150 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 66 months.

A detail of Piedmont’s interest rate derivatives outstanding as of September 30, 2019 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	3	Amended and Restated $300 Million Unsecured 2011 Term Loan	$	300	11/22/2016	1/15/2020
Interest rate swaps	2	$250 Million Unsecured 2018 Term Loan	$	100	3/29/2018	3/31/2025
Interest rate swaps	1	$250 Million Unsecured 2018 Term Loan	$	50	3/29/2018	3/29/2020
Total			$	450

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, 2019 and December 31, 2018, respectively, is as follows (in thousands):

Interest rate swaps classified as:	September 30, 2019		December 31, 2018
Gross derivative assets	$	—	$	1,199
Gross derivative liabilities	(6,862)		(839)
Net derivative asset/(liability)	$	(6,862)	$	360

The gain/(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, 2019 and 2018, respectively, was as follows (in thousands):

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	Three Months Ended				Nine Months Ended
Interest Rate Swaps in Cash Flow Hedging Relationships	September 30, 2019		September 30, 2018		September 30, 2019		September 30, 2018
Amount of gain/(loss) recognized in OCI	$	(1,386)	$	1,144	$	(6,874)	$	4,408
Amount of previously recorded gain reclassified from OCI into Interest Expense	$	427	$	434	$	1,871	$	885
Amount of loss recognized on derivatives reclassified from OCI into Loss on Extinguishment of Debt	$	—	$	—	$	—	$	(1,258)
Total amount of Interest Expense presented in the consolidated statements of income	$	(16,145)	$	(15,849)	$	(46,750)	$	(45,294)
Total amount of Loss on Extinguishment of Debt presented in the consolidated statements of income (1)	$	—	$	—	$	—	$	(1,680)

⁽¹⁾Includes the write-off of approximately $0.4 million of discounts and unamortized debt issuance costs associated with the repayment of debt.

Piedmont estimates that approximately $0.2 million will be reclassified from OCI as a reduction of 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, 2019 and 2018, 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 $7.1 million as of September 30, 2019. 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, notes receivable, 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, 2019 and December 31, 2018, respectively (in thousands):

	September 30, 2019					December 31, 2018
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)	$	10,284	$	10,284	Level 1	$	4,571	$	4,571	Level 1
Tenant receivables (1)	$	10,091	$	10,091	Level 1	$	10,800	$	10,800	Level 1
Restricted cash and escrows (1)	$	1,820	$	1,820	Level 1	$	1,463	$	1,463	Level 1
Interest rate swaps	$	—	$	—	Level 2	$	1,199	$	1,199	Level 2
Liabilities:
Accounts payable and accrued expenses (1)	$	14,090	$	14,090	Level 1	$	47,328	$	47,328	Level 1
Interest rate swaps	$	6,862	$	6,862	Level 2	$	839	$	839	Level 2
Debt, net	$	1,879,244	$	1,922,891	Level 2	$	1,685,472	$	1,698,213	Level 2

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

Piedmont's debt was carried at book value as of September 30, 2019 and December 31, 2018; however, to estimate its fair value as disclosed in the table above, Piedmont used 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 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 (further discussed in Note 5) are classified as “Interest rate swap” assets and liabilities in the accompanying consolidated balance sheets and were carried at estimated fair value as of September 30, 2019 and December 31, 2018. The estimated fair value of these derivative instruments was determined using widely accepted valuation techniques such as discounted cash flow analysis based on the contractual terms of the derivatives including the period to maturity of each instrument. Observable market-based inputs, including interest rate curves and implied volatilities, were also used. 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 for both Piedmont and the counterparties that were at risk as of the valuation date. The credit risks of both Piedmont and its counterparties were factored into the calculation of the estimated fair value of the interest rate swaps; however, as of September 30, 2019 and December 31, 2018, this credit valuation adjustment did not comprise a material portion of the estimated fair value. Therefore, Piedmont believes that any unobservable inputs (Level 3) 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 assets or liabilities.

7. Impairment Loss on Real Estate Assets

During the three 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 of $12.7 million, and recognized an impairment loss on real estate assets of approximately $2.0 million. Piedmont closed on the sale of The Dupree building on September 4, 2019.

8. 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, 2019, Piedmont had no individually significant unrecorded tenant allowance commitments.

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. Piedmont recorded net recoveries of previously recognized reductions in rental and reimbursement revenues of $0.7 million related to tenant audits/disputes during the three and nine months ended September 30, 2019 and approximately $0.1 million and $0.5 million of reductions in rental and reimbursement revenues related to such tenant audits/disputes during the three and nine months ended September 30, 2018, respectively.

9. Related-Party Transactions

During the nine months ended September 30, 2019, Piedmont entered into employment or retirement agreements with certain of its current and former executive officers as more fully described in its Definitive Proxy Statement and Current Report on Form 8-K filed on March 19, 2019. There were no other related-party transactions during the nine months ended September 30, 2019.

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10. Assets Held for Sale

As of September 30, 2019, the 500 West Monroe Street building met the criteria for held for sale classification; consequently, its assets were reclassified as held for sale as of September 30, 2019 and December 31, 2018. The sale closed on October 28, 2019. Additionally, the One Independence Square building in Washington, D.C. also met the criteria for held for sale classification as of December 31, 2018 and was sold on February 28, 2019. Details of assets held for sale as of September 30, 2019 and December 31, 2018 are presented below (in thousands):

	September 30, 2019		December 31, 2018
Real estate assets held for sale, net:
Land	$	36,990	$	67,552
Building and improvements, less accumulated depreciation of $61,579 and $102,476 as of September 30, 2019 and December 31, 2018, respectively	176,066		261,463
Construction in progress	38		2,053
Total real estate assets held for sale, net	$	213,094	$	331,068
Other assets held for sale, net:
Straight-line rent receivables	$	26,132	$	36,584
Prepaid expenses and other assets	452		1,095
Deferred lease costs, less accumulated amortization of $7,887 and $9,138 as of September 30, 2019 and December 31, 2018, respectively	13,452		23,554
Total other assets held for sale, net	$	40,036	$	61,233
Other liabilities held for sale:
Accrued expenses as of September 30, 2019 and December 31, 2018, respectively	$	7,275	$	8,780

21

11. 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. Employee awards 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 described above 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, 2019 is as follows:

	Shares		Weighted-Average Grant Date Fair Value
Unvested and Potential Stock Awards as of December 31, 2018	1,227,483		$	23.14
Deferred Stock Awards Granted	354,057		$	21.02
Increase in Estimated Potential Share Award based on Performance	260,205		$	28.31
Performance Stock Awards Vested	(352,404)	(1)	$	25.83
Deferred Stock Awards Vested	(440,450)	(1)	$	19.66
Deferred Stock Awards Forfeited	(14,518)		$	19.16
Unvested and Potential Stock Awards as of September 30, 2019	1,034,373		$	25.10

⁽¹⁾Includes performance share and deferred stock awards that were settled in cash in July 2019 in conjunction with the senior management transition that occurred on June 30, 2019.

The following table provides additional information regarding stock award activity during the three and nine months ended September 30, 2019 and 2018, respectively (in thousands, except per share amounts):

	Three Months Ended				Nine Months Ended
	September 30, 2019		September 30, 2018		September 30, 2019		September 30, 2018
Weighted-Average Grant Date Fair Value of Deferred Stock Granted During the Period	$	—	$	—	$	21.02	$	17.84
Total Grant Date Fair Value of Deferred Stock Vested During the Period	$	—	$	16	$	8,658	$	6,378
Share-based Liability Awards Paid During the Period (1)	$	3,444	$	—	$	6,683	$	2,947

⁽¹⁾Amounts reflect the issuance of performance share awards related to the 2016-18 and 2015-17 Performance Share Plans during the nine months ended September 30, 2019 and 2018, 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.

22

A detail of Piedmont’s outstanding stock awards as of September 30, 2019 is as follows:

Date of grant	Type of Award	Net Shares Granted (1)	Grant Date Fair Value		Vesting Schedule	Unvested Shares
May 18, 2017	Deferred Stock Award	196,036	$	21.38	Of the shares granted, 25% vested on the date of grant, and 25% vested or will vest on May 18, 2018, 2019, and 2020, respectively.	40,942
May 18, 2017	Fiscal Year 2017-2019 Performance Share Program	—	$	30.45	Shares awarded, if any, will vest immediately upon determination of award in 2020.	153,368	(2)
May 17, 2018	Deferred Stock Award	271,169	$	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.	108,255
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 15, 2019	Deferred Stock Award-Board of Directors	25,974	$	20.79	Of the shares granted, 100% will vest by May 15, 2020.	25,974
May 3, 2019	Deferred Stock Award	300,825	$	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.	195,119
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.	310,041	(2)
Total						1,034,373

⁽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, 2019.

⁽²⁾Estimated based on Piedmont's cumulative TSR for the respective performance period through September 30, 2019. 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, 2019 and 2018, Piedmont recognized approximately $3.8 million and $1.7 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, 2019 and 2018, Piedmont recognized approximately $12.0 million and $6.7 million, respectively, of compensation expense related to stock awards of which $10.5 million and $5.6 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, 2019, a net total of 292,675 shares were issued to employees. As of September 30, 2019, approximately $4.5 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.

23

12. Supplemental Disclosures for the Statement of Consolidated Cash Flows

Certain non cash investing and financing activities for the nine months ended September 30, 2019 and 2018, (in thousands) are outlined below:

	Nine Months Ended
	September 30, 2019		September 30, 2018
Accrued capital expenditures and deferred lease costs	$	29,828	$	21,784
Change in accrued dividends and discount on dividend reinvestments	$	(26,972)	$	(101,794)
Change in accrued share repurchases as part of an announced plan	$	(4,417)	$	(1,277)
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 statement of cash flows for the nine months ended September 30, 2019 and 2018, to the consolidated balance sheets for the respective period (in thousands):

	2019		2018
Cash and cash equivalents as of January 1, 2019 and 2018, respectively	$	4,571	$	7,382
Restricted cash and escrows as of January 1, 2019 and 2018, respectively	1,463		1,373
Cash, cash equivalents, and restricted cash and escrows, beginning of period, as presented in the accompanying consolidated statement of cash flows	$	6,034	$	8,755
Cash and cash equivalents as of September 30, 2019 and 2018, respectively	$	10,284	$	6,807
Restricted cash and escrows as of September 30, 2019 and 2018, respectively	1,820		1,374
Cash, cash equivalents, and restricted cash and escrows, end of period, as presented in the accompanying consolidated statement of cash flows	$	12,104	$	8,181

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.

13. 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, 2019 and 2018, Piedmont calculated and excluded 251 shares and zero anti-dilutive shares, respectively, and for the nine months ended September 30, 2019 and 2018, Piedmont calculated and excluded 54,372 and 125,941, anti-dilutive shares, respectively.

24

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, 2019 and 2018, respectively (in thousands):

	Three Months Ended		Nine Months Ended
	September 30, 2019	September 30, 2018	September 30, 2019	September 30, 2018
Weighted-average common shares – basic	125,783	128,371	125,684	130,837
Plus: Incremental weighted-average shares from time-vested deferred and performance stock awards	457	448	506	350
Weighted-average common shares – diluted	126,240	128,819	126,190	131,187

25

14. Guarantor and Non-Guarantor Financial Information

The following condensed consolidating financial information for Piedmont (the "Parent", "Guarantor", and/or "Consolidated"), Piedmont OP (the "Issuer"), and the other directly and indirectly owned subsidiaries of Piedmont as the Guarantor (the "Non-Guarantors") is provided pursuant to the requirements of Rule 3-10 of Regulation S-X regarding financial statements of guarantors and issuers of guaranteed registered securities. The Issuer is a wholly-owned subsidiary of the Guarantor, and all guarantees by the Guarantor of securities issued by the Issuer are full and unconditional. The principal elimination entries relate to investments in subsidiaries and intercompany balances and transactions, including transactions with the Non-Guarantor Subsidiaries.

Condensed Consolidating Balance Sheets
As of September 30, 2019
(in thousands)	Piedmont (Parent) (Guarantor)		Piedmont OP (the Issuer)		Non-Guarantors		Eliminations		Consolidated
Assets:
Real estate assets, at cost:
Land	$	—	$	36,094	$	470,346	$	—	$	506,440
Buildings and improvements, less accumulated depreciation	—		186,269		2,141,086		(300)		2,327,055
Intangible lease assets, less accumulated amortization	—		—		88,371		—		88,371
Construction in progress	—		1,058		12,808		—		13,866
Real estate assets held for sale, net	—		—		213,094		—		213,094
Total real estate assets	—		223,421		2,925,705		(300)		3,148,826
Cash and cash equivalents	150		5,758		4,376		—		10,284
Tenant and straight-line rent receivables	—		16,514		140,774		—		157,288
Investment in subsidiaries	1,681,492		3,037,093		162		(4,718,747)		—
Notes receivable	—		810		144,500		(145,310)		—
Prepaid expenses, restricted cash, escrows, interest rate swaps, and other assets	35		6,227		22,710		(9)		28,963
Goodwill	—		98,918		—		—		98,918
Deferred lease costs, net	—		16,567		251,049		—		267,616
Other assets held for sale, net			—		40,036		—		40,036
Total assets	$	1,681,677	$	3,405,308	$	3,529,312	$	(4,864,366)	$	3,751,931
Liabilities:
Debt, net	$	—	$	1,689,749	$	334,805	$	(145,310)	$	1,879,244
Accounts payable, accrued expenses, and accrued capital expenditures	894		16,054		97,873		(9)		114,812
Deferred income	—		3,693		24,292		—		27,985
Intangible lease liabilities, net	—		—		34,970		—		34,970
Interest rate swaps	—		6,862		—		—		6,862
Liabilities held for sale	—		—		7,275		—		7,275
Total liabilities	894		1,716,358		499,215		(145,319)		2,071,148
Equity:
Total stockholders’ equity	1,680,783		1,688,950		3,030,097		(4,719,047)		1,680,783
Total liabilities and stockholders’ equity	$	1,681,677	$	3,405,308	$	3,529,312	$	(4,864,366)	$	3,751,931

26

Condensed Consolidating Balance Sheets
As of December 31, 2018
(in thousands)	Piedmont (Parent) (Guarantor)		Piedmont OP (the Issuer)		Non-Guarantors		Eliminations		Consolidated
Assets:
Real estate assets, at cost:
Land	$	—	$	36,094	$	434,338	$	—	$	470,432
Buildings and improvements, less accumulated depreciation	—		176,927		1,944,943		(300)		2,121,570
Intangible lease assets, less accumulated amortization	—		—		77,676		—		77,676
Construction in progress	—		5,708		10,140		—		15,848
Real estate assets held for sale, net	—		—		331,068		—		331,068
Total real estate assets	—		218,729		2,798,165		(300)		3,016,594
Cash and cash equivalents	150		—		4,939		(518)		4,571
Tenant and straight-line rent receivables	—		16,143		131,419		—		147,562
Investment in subsidiaries	1,744,122		2,704,337		166		(4,448,625)		—
Notes receivable	—		810		144,500		(145,310)		—
Prepaid expenses, restricted cash, escrows, interest rate swaps, and other assets	42		5,682		21,653		(24)		27,353
Goodwill	—		98,918		—		—		98,918
Deferred lease costs, net	—		15,158		221,040		—		236,198
Other assets held for sale, net	—		—		61,233		—		61,233
Total assets	$	1,744,314	$	3,059,777	$	3,383,115	$	(4,594,777)	$	3,592,429
Liabilities:
Debt, net	$	—	$	1,495,065	$	335,717	$	(145,310)	$	1,685,472
Accounts payable, accrued expenses, dividends payable, interest rate swaps and accrued capital expenditures	32,174		15,382		74,536		(542)		121,550
Deferred income	—		2,274		26,505		—		28,779
Intangible lease liabilities, net	—		—		35,708		—		35,708
Liabilities held for sale	—		—		8,780		—		8,780
Total liabilities	32,174		1,512,721		481,246		(145,852)		1,880,289
Equity:
Total stockholders’ equity	1,712,140		1,547,056		2,901,869		(4,448,925)		1,712,140
Total liabilities and stockholders’ equity	$	1,744,314	$	3,059,777	$	3,383,115	$	(4,594,777)	$	3,592,429

27

Consolidating Statements of Income
For the Three Months Ended September 30, 2019
(in thousands)	Piedmont (Parent) (Guarantor)		Piedmont OP (the Issuer)		Non-Guarantors		Eliminations		Consolidated
Revenues:
Rental and tenant reimbursement revenue	$	—	$	11,940	$	119,385	$	(746)	$	130,579
Property management fee revenue	—		—		4,622		(4,217)		405
Other property related income	—		40		4,397		—		4,437
	—		11,980		128,404		(4,963)		135,421
Expenses:
Property operating costs	36		5,507		54,033		(4,963)		54,613
Depreciation	—		3,062		24,069		—		27,131
Amortization	—		486		19,019		—		19,505
Impairment loss on real estate assets	—		—		1,953		—		1,953
General and administrative	(30)		1,547		6,433		—		7,950
	6		10,602		105,507		(4,963)		111,152
Other income (expense):
Interest expense	—		(14,429)		(3,610)		1,894		(16,145)
Other income/(expense)	—		16		2,141		(1,894)		263
Gain on sale of real estate assets	—		—		32		—		32
Income/(loss) before consolidated subsidiaries	(6)		(13,035)		21,460		—		8,419
Income from subsidiaries	8,428		22,929		—		(31,357)		—
Net income	8,422		9,894		21,460		(31,357)		8,419
Plus: Net loss applicable to noncontrolling interest	—		—		3		—		3
Net income applicable to Piedmont	$	8,422	$	9,894	$	21,463	$	(31,357)	$	8,422

28

Consolidating Statements of Income
For the Three Months Ended September 30, 2018
(in thousands)	Piedmont (Parent) (Guarantor)		Piedmont OP (the Issuer)		Non-Guarantors		Eliminations		Consolidated
Revenues:
Rental and tenant reimbursement revenue	$	—	$	10,861	$	114,351	$	(694)	$	124,518
Property management fee revenue	—		—		4,296		(3,928)		368
Other property related income	—		35		4,787		—		4,822
	—		10,896		123,434		(4,622)		129,708
Expenses:
Property operating costs	—		4,973		49,328		(4,622)		49,679
Depreciation	—		2,816		24,036		—		26,852
Amortization	—		446		14,394		—		14,840
General and administrative	42		1,424		5,211		—		6,677
	42		9,659		92,969		(4,622)		98,048
Other income (expense):
Interest expense	—		(14,119)		(3,624)		1,894		(15,849)
Other income/(expense)	—		40		2,157		(1,894)		303
	—		(14,079)		(1,467)		—		(15,546)
Income/(loss) before consolidated subsidiaries	(42)		(12,842)		28,998		—		16,114
Income from subsidiaries	16,156		26,787		—		(42,943)		—
Net income	16,114		13,945		28,998		(42,943)		16,114
Plus: Net loss applicable to noncontrolling interest	—		—		—		—		—
Net income applicable to Piedmont	$	16,114	$	13,945	$	28,998	$	(42,943)	$	16,114

29

Consolidating Statements of Income
For the Nine Months Ended September 30, 2019
(in thousands)	Piedmont (Parent) (Guarantor)		Piedmont OP (the Issuer)		Non-Guarantors		Eliminations		Consolidated
Revenues:
Rental and tenant reimbursement revenue	$	—	$	34,477	$	349,886	$	(2,150)	$	382,213
Property management fee revenue	—		—		14,961		(12,142)		2,819
Other property related income	—		117		13,876		—		13,993
	—		34,594		378,723		(14,292)		399,025
Expenses:
Property operating costs	36		15,848		157,206		(14,292)		158,798
Depreciation	—		9,041		70,963		—		80,004
Amortization	—		1,435		54,231		—		55,666
Impairment loss on real estate assets	—		—		1,953		—		1,953
General and administrative	165		4,874		24,697		—		29,736
	201		31,198		309,050		(14,292)		326,157
Other income (expense):
Interest expense	—		(41,590)		(10,801)		5,641		(46,750)
Other income/(expense)	—		125		6,808		(5,641)		1,292
Gain on sale of real estate assets	—		128		39,242		—		39,370
	—		(41,337)		35,249		—		(6,088)
Income/(loss) before consolidated subsidiaries	(201)		(37,941)		104,922		—		66,780
Income from subsidiaries	66,984		72,012		—		(138,996)		—
Net income	66,783		34,071		104,922		(138,996)		66,780
Plus: Net loss applicable to noncontrolling interest	—		—		3		—		3
Net income applicable to Piedmont	$	66,783	$	34,071	$	104,925	$	(138,996)	$	66,783

30

Consolidating Statements of Income
For the Nine Months Ended September 30, 2018
(in thousands)	Piedmont (Parent) (Guarantor)		Piedmont OP (the Issuer)		Non-Guarantors		Eliminations		Consolidated
Revenues:
Rental and tenant reimbursement revenue	$	—	$	33,754	$	340,539	$	(1,802)	$	372,491
Property management fee revenue	—		—		12,625		(11,566)		1,059
Other property related income	—		92		15,140		—		15,232
	—		33,846		368,304		(13,368)		388,782
Expenses:
Property operating costs	—		14,614		152,929		(13,368)		154,175
Depreciation	—		8,527		72,585		—		81,112
Amortization	—		1,520		45,298		—		46,818
General and administrative	228		4,849		16,410		—		21,487
	228		29,510		287,222		(13,368)		303,592
Other income (expense):
Interest expense	—		(40,093)		(10,937)		5,736		(45,294)
Other income/(expense)	—		200		7,016		(5,736)		1,480
Loss on extinguishment of debt	—		(1,680)		—		—		(1,680)
Gain on sale of real estate assets	—		1,417		43,769		—		45,186
	—		(40,156)		39,848		—		(308)
Income/(loss) before consolidated subsidiaries	(228)		(35,820)		120,930		—		84,882
Income from subsidiaries	85,114		119,013		—		(204,127)		—
Net income	84,886		83,193		120,930		(204,127)		84,882
Plus: Net loss applicable to noncontrolling interest	—		—		4		—		4
Net income applicable to Piedmont	$	84,886	$	83,193	$	120,934	$	(204,127)	$	84,886

31

Consolidating Statements of Comprehensive Income
For the Three Months Ended September 30, 2019
(in thousands)	Piedmont (Parent) (Guarantor)		Piedmont OP (the Issuer)		Non-Guarantors		Eliminations		Consolidated
Net income	$	8,422	$	9,894	$	21,463	$	(31,357)	$	8,422
Other comprehensive loss:
Effective portion of loss on derivative instruments that are designated and qualify as cash flow hedges	(1,386)		(1,386)		—		1,386		(1,386)
Less: Reclassification of net gain included in net income	(427)		(427)		—		427		(427)
Other comprehensive loss	(1,813)		(1,813)		—		1,813		(1,813)
Comprehensive income	$	6,609	$	8,081	$	21,463	$	(29,544)	$	6,609

Consolidating Statements of Comprehensive Income
For the Three Months Ended September 30, 2018
(in thousands)	Piedmont (Parent) (Guarantor)		Piedmont OP (the Issuer)		Non-Guarantors		Eliminations		Consolidated
Net income	$	16,114	$	13,945	$	28,998	$	(42,943)	$	16,114
Other comprehensive income:
Effective portion of gain on derivative instruments that are designated and qualify as cash flow hedges	1,144		1,144		—		(1,144)		1,144
Less: Reclassification of net gain included in net income	(434)		(434)		—		434		(434)
Other comprehensive income	710		710		—		(710)		710
Comprehensive income	$	16,824	$	14,655	$	28,998	$	(43,653)	$	16,824

32

Consolidating Statements of Comprehensive Income
For the Nine Months Ended September 30, 2019
(in thousands)	Piedmont (Parent) (Guarantor)		Piedmont OP (the Issuer)		Non-Guarantors		Eliminations		Consolidated
Net income	$	66,783	$	34,071	$	104,925	$	(138,996)	$	66,783
Other comprehensive loss:
Effective portion of loss on derivative instruments that are designated and qualify as cash flow hedges	(6,874)		(6,874)		—		6,874		(6,874)
Less: Reclassification of net gain included in net income	(1,871)		(1,871)		—		1,871		(1,871)
Other comprehensive loss	(8,745)		(8,745)		—		8,745		(8,745)
Comprehensive income	$	58,038	$	25,326	$	104,925	$	(130,251)	$	58,038

Consolidating Statements of Comprehensive Income
For the Nine Months Ended September 30, 2018
(in thousands)	Piedmont (Parent) (Guarantor)		Piedmont OP (the Issuer)		Non-Guarantors		Eliminations		Consolidated
Net income	$	84,886	$	83,193	$	120,934	$	(204,127)	$	84,886
Other comprehensive income:
Effective portion of gain on derivative instruments that are designated and qualify as cash flow hedges	4,408		4,408		—		(4,408)		4,408
Plus: Reclassification of net loss included in net income	373		373		—		(373)		373
Other comprehensive income	4,781		4,781		—		(4,781)		4,781
Comprehensive income	$	89,667	$	87,974	$	120,934	$	(208,908)	$	89,667

33

Condensed Consolidating Statements of Cash Flows
For the Nine Months Ended September 30, 2019
(in thousands)	Piedmont (Parent) (Guarantor)		Piedmont OP (the Issuer)		Non-Guarantors		Eliminations		Consolidated
Net Cash Provided by Operating Activities	$	72,694	$	43,676	$	182,344	$	(138,471)	$	160,243
Cash Flows from Investing Activities:
Investment in real estate assets and intangibles	—		(13,561)		(369,951)		—		(383,512)
Net sales proceeds from wholly-owned properties	—		128		180,847		—		180,975
Deferred lease costs paid	—		(1,210)		(15,422)		—		(16,632)
Distributions from subsidiaries	54,151		215,231		—		(269,382)		—
Net cash provided by/(used in) investing activities	54,151		200,588		(204,526)		(269,382)		(219,169)
Cash Flows from Financing Activities:
Debt issuance and other costs paid	—		(91)		—		—		(91)
Proceeds from debt	—		550,000		—		—		550,000
Repayments of debt	—		(357,000)		(1,041)		—		(358,041)
Costs of issuance of common stock	(259)		—		—		—		(259)
Value of shares withheld to pay tax obligations related to employee stock compensation	(3,295)		—		—		—		(3,295)
Repurchases of common stock as part of announced plan	(16,899)		—		—		—		(16,899)
Distributions	(106,392)		(431,416)		23,018		408,371		(106,419)
Net cash provided by/(used in) financing activities	(126,845)		(238,507)		21,977		408,371		64,996
Net increase/(decrease) in cash, cash equivalents, and restricted cash and escrows	—		5,757		(205)		518		6,070
Cash, cash equivalents, and restricted cash and escrows, beginning of period	150		32		6,370		(518)		6,034
Cash, cash equivalents, and restricted cash and escrows, end of period	$	150	$	5,789	$	6,165	$	—	$	12,104

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Condensed Consolidating Statements of Cash Flows
For the Nine Months Ended September 30, 2018
(in thousands)	Piedmont (Parent) (Guarantor)		Piedmont OP (the Issuer)		Non-Guarantors		Eliminations		Consolidated
Net Cash Provided by Operating Activities	$	89,540	$	89,639	$	164,063	$	(204,920)	$	138,322
Cash Flows from Investing Activities:
Investment in real estate assets and intangibles	—		(6,074)		(67,100)		—		(73,174)
Intercompany note receivable	—		88,000		—		(88,000)		—
Net sales proceeds from wholly-owned properties	—		36,572		382,982		—		419,554
Note receivable issuance	—		—		(3,200)		—		(3,200)
Deferred lease costs paid	—		(1,826)		(14,005)		—		(15,831)
Distributions from subsidiaries	362,784		64,633		—		(427,417)		—
Net cash provided by investing activities	362,784		181,305		298,677		(515,417)		327,349
Cash Flows from Financing Activities:
Debt issuance costs paid	—		(947)		—		—		(947)
Proceeds from debt	—		820,061		—		—		820,061
Repayments of debt	—		(832,000)		(1,005)		—		(833,005)
Intercompany note payable	—		—		(88,000)		88,000		—
Value of shares withheld to pay tax obligations related to employee stock compensation	(2,219)		—		—		—		(2,219)
Repurchases of common stock as part of announced plan	(266,062)		—		—		—		(266,062)
Distributions	(184,043)		(258,907)		(373,460)		632,337		(184,073)
Net cash used in financing activities	(452,324)		(271,793)		(462,465)		720,337		(466,245)
Net increase/(decrease) in cash, cash equivalents, and restricted cash and escrows	—		(849)		275		—		(574)
Cash, cash equivalents, and restricted cash and escrows, beginning of period	150		3,906		4,699		—		8,755
Cash, cash equivalents, and restricted cash and escrows, end of period	$	150	$	3,057	$	4,974	$	—	$	8,181

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15. Subsequent Events

Fourth Quarter Dividend Declaration

On October 30, 2019, the Board of Directors of Piedmont declared a dividend for the fourth quarter of 2019 in the amount of $0.21 per common share outstanding to stockholders of record as of the close of business on November 29, 2019. Such dividend will be paid on January 3, 2020.

Disposition Activity

On October 28, 2019, Piedmont closed on the sale of the 500 West Monroe Street building with an unrelated third party for $412 million ($426 per square foot). The 500 West Monroe Street building, an approximately 967,000 square foot office building, is 100% leased.

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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, 2018.

Liquidity and Capital Resources

We intend to use cash flows generated from the operation of our properties, proceeds from selective property dispositions, and proceeds from our $500 Million Unsecured 2018 Line of Credit as our primary sources of immediate liquidity. As of the date of this filing, we have approximately $484 million of unused capacity under our line of credit. 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, 2019 and 2018 we incurred the following types of capital expenditures (in thousands):

	Nine Months Ended
	September 30, 2019		September 30, 2018
Capital expenditures for redevelopment/renovations	$	10,119	$	7,637
Other capital expenditures, including building and tenant improvements	47,249		37,361
Total capital expenditures (1)	$	57,368	$	44,998

⁽¹⁾Of the total amounts paid, approximately $2.0 million and $1.2 million relates to soft costs such as capitalized interest, payroll, and other general and administrative expenses for the nine months ended September 30, 2019 and 2018, respectively.

"Capital expenditures for redevelopment/renovations" 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. Expenditures during the nine months ended September 30, 2018 related to the redevelopment project to upgrade amenities and parking at our Two Pierce Place building.

"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, 2019, we committed to spend approximately $5.10 per square foot per year of lease term for tenant improvement allowances and lease commissions (net of expiring lease commitments) as compared to $5.61 (net of expired lease commitments) for the nine months ended September 30, 2018. As of September 30, 2019, we have no individually significant tenant improvement commitments. However, 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 are 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. For example, the New York State Commissioner of General Services recently executed an approximately 20-year, 523,000 square foot renewal and expansion on behalf of our largest tenant, the State of New York at our 60 Broad Street building in New York City. In conjunction with that lease, we anticipate expending approximately $7.00 per square foot per year of lease term over the next five years for market-based tenant improvement allowances and leasing commissions.

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 compatible with our investment strategy could also be a significant use of capital. We may also use capital resources to

37

repurchase additional shares of our common stock under our stock repurchase program when we believe the stock is trading at a significant discount to net asset value. As of September 30, 2019, we had approximately $74.1 million of board-authorized capacity remaining for future stock repurchases. Finally, although we currently have no scheduled debt maturities until the third quarter of 2021, on a longer term basis we expect to use capital to repay debt obligations when they become due.

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, 2019 was $8.4 million, or $0.07 per diluted share, as compared with net income applicable to common stockholders of $16.1 million, or $0.13 per diluted share, for the three months ended September 30, 2018. The decrease is mainly due to higher amortization expense associated with recently acquired properties, as well as an impairment loss of approximately $0.02 per share recognized in conjunction with the decision to sell The Dupree building during the three months ended September 30, 2019.

Comparison of the three months ended September 30, 2019 versus the three months ended September 30, 2018

Income from Continuing Operations

The following table sets forth selected data from our consolidated statements of income for the three months ended September 30, 2019 and 2018, respectively, as well as each balance as a percentage of total revenues for the same periods presented (dollars in millions):

	September 30, 2019		% of Revenues		September 30, 2018		% of Revenues		Variance
Revenue:
Rental and tenant reimbursement revenue	$	130.6			$	124.5			$	6.1
Property management fee revenue	0.4				0.4				—
Other property related income	4.4				4.8				(0.4)
Total revenues	135.4		100	%	129.7		100	%	5.7
Expense:
Property operating costs	54.6		41	%	49.7		38	%	4.9
Depreciation	27.1		20	%	26.9		21	%	0.2
Amortization	19.5		15	%	14.8		11	%	4.7
Impairment loss on real estate assets	2.0		1	%	—		—	%	2.0
General and administrative	8.0		6	%	6.7		6	%	1.3
	111.2				98.1				13.1
Other income (expense):
Interest expense	(16.1)		12	%	(15.8)		12	%	(0.3)
Other income	0.3		—	%	0.3		—	%	—
Gain on sale of real estate assets	—		—	%	—		—	%	—
Net income	$	8.4	6	%	$	16.1	12	%	$	(7.7)

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Revenue

Rental and tenant reimbursement revenue increased approximately $6.1 million for the three months ended September 30, 2019, as compared to the same period in the prior year. The variance was primarily due to $2.6 million of increased reimbursement revenue recognized as a result of higher recoverable property operating costs and higher overall average occupancy, as well as $2.2 million of increased rental revenue due to net acquisition activity subsequent to July 1, 2018. The remainder of the increase was due to new leases commencing during 2018 and 2019 across our portfolio.

Expense

Property operating costs increased approximately $4.9 million for the three months ended September 30, 2019, as compared to the same period in the prior year. The variance was primarily due to increased recoverable property tax expense, repairs and maintenance, janitorial expenses, parking expenses, and administrative costs of approximately $2.7 million across our existing portfolio of properties. Further, approximately $1.3 million of the increase was due to net acquisition activity subsequent to July 1, 2018.

Depreciation expense increased approximately $0.2 million for the three months ended September 30, 2019 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, 2018 across our existing portfolio of properties.

Amortization expense increased approximately $4.7 million for the three months ended September 30, 2019 as compared to the same period in the prior year. Approximately $6.9 million of the variance was due to an increase in the amortization of lease intangible assets associated with properties acquired subsequent to July 1, 2018. This increase was partially offset by approximately $2.4 million of lease intangible assets or other deferred costs at our existing properties becoming fully amortized either as a result of the expiration or early termination of leases subsequent to July 1, 2018.

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 (see Note 7 for details).

General and administrative expense increased approximately $1.3 million for the three months ended September 30, 2019 as compared to the same period in the prior year primarily due to increased accruals for expenses associated with potential performance-based equity compensation as a result of our relative stock performance during the current period.

Other Income (Expense)

Interest expense increased approximately $0.3 million for the three months ended September 30, 2019 as compared to the same period in the prior year. The increase was primarily attributable to a higher average balance on our $500 Million Unsecured 2018 Line of Credit as a result of purchasing the Galleria 400 and Galleria 600 buildings, and approximately 10 acres of developable land. We repaid substantially all of these borrowings with proceeds from the sale of the 500 West Monroe Street disposition on October 28, 2019. The increase was partially offset by higher capitalized interest expense in the current period as part of the redevelopment projects at our US Bancorp Center and Two Pierce Place buildings.

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Comparison of the accompanying consolidated statements of income for the nine months ended September 30, 2019 versus the nine months ended September 30, 2018

Income from Continuing Operations

The following table sets forth selected data from our consolidated statements of income for the nine months ended September 30, 2019 and 2018, respectively, as well as each balance as a percentage of total revenues for the same period presented (dollars in millions):

	September 30, 2019		% of Revenues		September 30, 2018		% of Revenues		Variance
Revenue:
Rental and tenant reimbursement revenue	$	382.2			$	372.5			$	9.7
Property management fee revenue	2.8				1.1				1.7
Other property related income	14.0				15.2				(1.2)
Total revenues	399.0		100	%	388.8		100	%	10.2
Expense:
Property operating costs	158.8		40	%	154.2		40	%	4.6
Depreciation	80.0		20	%	81.1		21	%	(1.1)
Amortization	55.7		14	%	46.8		12	%	8.9
Impairment loss on real estate assets	2.0		1	%	—		—	%	2.0
General and administrative	29.7		7	%	21.5		5	%	8.2
	326.2				303.6				22.6
Other income (expense):
Interest expense	(46.7)		12	%	(45.3)		12	%	(1.4)
Other income	1.3		—	%	1.5		—	%	(0.2)
Loss on extinguishment of debt	—		—	%	(1.7)		—	%	1.7
Gain on sale of real estate assets	39.4		10	%	45.2		12	%	(5.8)
Net income	$	66.8	17	%	$	84.9	22	%	$	(18.1)

Revenue

Rental and tenant reimbursement revenue increased approximately $9.7 million for the nine months ended September 30, 2019 as compared to the same period in the prior year. The variance was primarily due to new leases at higher overall rental rates commencing during 2018 and 2019 in our existing portfolio. Further, we recognized increased reimbursement revenue as a result of higher recoverable property operating costs, contributing an additional $3.4 million to the increase.

Property management fee revenue increased approximately $1.7 million for the nine months ended September 30, 2019 as compared to the same period in the prior year. The increase was primarily due to construction management fees received from one of our former Independence Square properties during the nine months ended September 30, 2019, with such fees varying from period-to-period due to the variability of construction activity.

Other property related income decreased approximately $1.2 million for the nine months ended September 30, 2019 as compared to the same period in the prior year. The decrease is due to parking revenue earned in the prior period at the 800 North Brand Boulevard building which was sold in November 2018.

Expense

Property operating costs increased approximately $4.6 million for the nine months ended September 30, 2019 as compared to the same period in the prior year. Approximately $5.1 million of the increase was due to higher overall recoverable costs in our existing portfolio, particularly property tax expense and repairs and maintenance costs at certain of our existing properties. This increase was partially offset by lower overall expenses resulting from net disposition activity subsequent to January 1, 2018.

Depreciation expense decreased approximately $1.1 million for the nine months ended September 30, 2019 as compared to the same period in the prior year. Approximately $4.1 million of the decrease was attributable to net disposition activity subsequent to

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January 1, 2018; however, this decrease was substantially offset by depreciation on additional building and tenant improvements placed in service subsequent to January 1, 2018.

Amortization expense increased approximately $8.9 million for the nine months ended September 30, 2019 as compared to the same period in the prior year. Approximately $14.8 million of the increase was due to the amortization of lease intangible assets associated with properties acquired subsequent to January 1, 2018. This increase was substantially 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, 2018.

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 (see Note 7 for details).

General and administrative expenses increased approximately $8.2 million for the nine months ended September 30, 2019 as compared to the same period in the prior year due to $3.2 million of retirement and separation expenses associated with the senior management transition that occurred in June 2019. The remainder of the increase is due primarily to increased accruals of expense associated with potential performance-based equity compensation as a result of our relative stock performance during the current period.

Other Income (Expense)

Interest expense increased approximately $1.4 million for the nine months ended September 30, 2019 as compared to the same period in the prior year primarily as a result of higher average balances outstanding during the current year. The variance was partially offset by an increase in capitalized interest in the current year, as compared to the same period in the prior year, of approximately $0.8 million.

The $1.7 million loss on extinguishment of debt for the nine months ended September 30, 2018 was associated with the early repayment of our $170 Million Unsecured 2015 Term Loan and our $300 Million Unsecured 2013 Term Loan. The loss included the write-off of unamortized debt issuance costs, discounts, and costs related to the termination of interest rate swap agreements associated with the debt.

Gain on sale of real estate assets during the nine months ended September 30, 2019 reflected an approximate $33.2 million gain recognized on the sale of the One Independence Square building in Washington, D.C. that closed in February 2019, 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. Gain on sale of real estate assets during the nine months ended September 30, 2018 reflected the gain recognized on the sale of the 2017 Disposition Portfolio comprised of 14 properties in various markets that closed in January 2018.

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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, plus the add back of depreciation and amortization on real estate assets. 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 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 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. 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.

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

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	Three Months Ended								Nine Months Ended
	September 30, 2019		Per Share(1)		September 30, 2018		Per Share(1)		September 30, 2019		Per Share(1)		September 30, 2018		Per Share(1)
GAAP net income applicable to common stock	$	8,422	$	0.07	$	16,114	$	0.13	$	66,783	$	0.53	$	84,886	$	0.65
Depreciation of real estate assets	26,909		0.21		26,668		0.21		79,346		0.63		80,531		0.61
Amortization of lease-related costs	19,491		0.15		14,828		0.11		55,622		0.44		46,773		0.35
Impairment loss on real estate assets	1,953		0.02		—		—		1,953		0.01		—		—
Gain on sale of real estate assets	(32)		—		—		—		(39,370)		(0.31)		(45,186)		(0.34)
NAREIT Funds From Operations applicable to common stock	$	56,743	$	0.45	$	57,610	$	0.45	$	164,334	$	1.30	$	167,004	$	1.27
Adjustments:
Retirement and separation expenses associated with senior management transition in June 2019	—		—		—		—		3,175		—		—		—
Loss on extinguishment of debt	—		—		—		—		—		—		1,680		0.02
Core Funds From Operations applicable to common stock	$	56,743	$	0.45	$	57,610	$	0.45	$	167,509	$	1.33	$	168,684	$	1.29
Adjustments:
Amortization of debt issuance costs, fair market value adjustments on notes payable, and discounts on debt	526				550				1,574				1,561
Depreciation of non real estate assets	214				176				634				558
Straight-line effects of lease revenue	(1,531)				(3,210)				(7,437)				(11,489)
Stock-based compensation adjustments	(3,015)				1,661				1,949				4,462
Net effect of amortization of above and below-market in-place lease intangibles	(1,923)				(2,006)				(6,009)				(5,636)
Non-incremental capital expenditures (2)	(14,352)				(9,276)				(27,410)				(27,407)
Adjusted Funds From Operations applicable to common stock	$	36,662			$	45,505			$	130,810			$	130,733
Weighted-average shares outstanding – diluted	126,240				128,819				126,190				131,187

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

⁽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.

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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, 2019 and 2018, respectively (in thousands):

	Cash Basis					Accrual Basis
	Three Months Ended					Three Months Ended
	September 30, 2019			September 30, 2018		September 30, 2019			September 30, 2018
Net income applicable to Piedmont (GAAP basis)	$	8,422		$	16,114	$	8,422		$	16,114
Net income applicable to noncontrolling interest	(3)			—		(3)			—
Interest expense	16,145			15,849		16,145			15,849
Depreciation	27,124			26,844		27,124			26,844
Amortization	19,491			14,828		19,491			14,828
Impairment loss on real estate assets	1,953			—		1,953			—
Gain on sale of real estate assets	(32)			—		(32)			—
General & administrative expenses	7,950			6,677		7,950			6,677
Management fee revenue (1)	(203)			(181)		(203)			(181)
Other income	(47)			(87)		(47)			(87)
Straight-line rent effects of lease revenue	(1,531)			(3,210)
Amortization of lease-related intangibles	(1,923)			(2,006)
Property NOI	$	77,346		$	74,828	$	80,800		$	80,044
Net operating income from:
Acquisitions (2)	(5,546)			(431)		(6,876)			(694)
Dispositions (3)	(296)			(7,019)		(280)			(6,811)
Other investments (4)	(896)			(132)		(889)			(141)
Same Store NOI	$	70,608		$	67,246	$	72,755		$	72,398
Change period over period in Same Store NOI	5.0		%	N/A		0.5		%	N/A

⁽¹⁾Presented net of related operating expenses incurred to earn such management fee revenue.

⁽²⁾Acquisitions consist of 501 West Church Street in Orlando, Florida, purchased on February 23, 2018; 9320 Excelsior Boulevard in Hopkins, Minnesota, purchased on October 25, 2018; 25 Burlington Mall Road in Burlington, Massachusetts, purchased on December 12, 2018; Galleria 100 and land in Atlanta, Georgia, purchased on May 6, 2019; and Galleria 400, Galleria 600 and land in Atlanta, Georgia, purchased on August 23, 2019.

⁽³⁾Dispositions consist of a 14-property portfolio sold on January 4, 2018 (comprised of 2300 Cabot Drive in Lisle, Illinois; Windy Point I and II in Schaumburg, Illinois; Suwanee Gateway One and land in Suwanee, Georgia; 1200 Crown Colony Drive in Quincy, Massachusetts; Piedmont Pointe I and II in Bethesda, Maryland; 1075 West Entrance Drive and Auburn Hills Corporate Center in Auburn Hills, Michigan; 5601 Hiatus Road in Tamarac, Florida; 2001 NW 64th Street in Ft. Lauderdale, Florida; Desert Canyon 300 in Phoenix, Arizona; 5301 Maryland Way in Brentwood, Tennessee; and 2120 West End Avenue in Nashville, Tennessee); 800 North Brand Boulevard in Glendale, California, sold on November 29, 2018; One Independence Square in Washington, D.C., sold on February 28, 2019; and The Dupree in Atlanta, Georgia, sold on September 4, 2019.

⁽⁴⁾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 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 nine months ended September 30, 2019 and 2018, respectively (in thousands):

	Cash Basis					Accrual Basis
	Nine Months Ended					Nine Months Ended
	September 30, 2019			September 30, 2018		September 30, 2019			September 30, 2018
Net income applicable to Piedmont (GAAP basis)	$	66,783		$	84,886	$	66,783		$	84,886
Net income applicable to noncontrolling interest	(3)			(4)		(3)			(4)
Interest expense	46,750			45,294		46,750			45,294
Loss on extinguishment of debt	—			1,680		—			1,680
Depreciation	79,982			81,090		79,982			81,090
Amortization	55,622			46,773		55,622			46,773
Impairment loss on real estate assets	1,953			—		1,953			—
Gain on sale of real estate assets	(39,370)			(45,186)		(39,370)			(45,186)
Retirement and separation expenses associated with senior management transition in June 2019	3,175			—		3,175			—
General & administrative expenses	26,561			21,487		26,561			21,487
Management fee revenue (1)	(2,226)			(531)		(2,226)			(531)
Other income	(165)			(475)		(165)			(475)
Straight-line rent effects of lease revenue	(7,437)			(11,489)
Amortization of lease-related intangibles	(6,009)			(5,636)
Property NOI	$	225,616		$	217,889	$	239,062		$	235,014
Net operating income from:
Acquisitions (2)	(12,610)			(1,038)		(14,974)			(1,653)
Dispositions (3)	(4,931)			(18,368)		(3,479)			(16,845)
Other investments (4)	(1,181)			(1,456)		(1,159)			(1,292)
Same Store NOI	$	206,894		$	197,027	$	219,450		$	215,224
Change period over period in Same Store NOI	5.0		%	N/A		2.0		%	N/A

⁽¹⁾Presented net of related operating expenses incurred to earn such management fee revenue.

⁽²⁾Acquisitions consist of 501 West Church Street in Orlando, Florida, purchased on February 23, 2018; 9320 Excelsior Boulevard in Hopkins, Minnesota, purchased on October 25, 2018; 25 Burlington Mall Road in Burlington, Massachusetts, purchased on December 12, 2018; Galleria 100 and land in Atlanta, Georgia, purchased on May 6, 2019; and Galleria 400, Galleria 600 and land in Atlanta, Georgia, purchased on August 23, 2019.

⁽³⁾Dispositions consist of a 14-property portfolio sold on January 4, 2018 (comprised of 2300 Cabot Drive in Lisle, Illinois; Windy Point I and II in Schaumburg, Illinois; Suwanee Gateway One and land in Suwanee, Georgia; 1200 Crown Colony Drive in Quincy, Massachusetts; Piedmont Pointe I and II in Bethesda, Maryland; 1075 West Entrance Drive and Auburn Hills Corporate Center in Auburn Hills, Michigan; 5601 Hiatus Road in Tamarac, Florida; 2001 NW 64th Street in Ft. Lauderdale, Florida; Desert Canyon 300 in Phoenix, Arizona; 5301 Maryland Way in Brentwood, Tennessee; and 2120 West End Avenue in Nashville, Tennessee); 800 North Brand Boulevard in Glendale, California, sold on November 29, 2018; One Independence Square in Washington, D.C., sold on February 28, 2019; and The Dupree in Atlanta, Georgia, sold on September 4, 2019.

⁽⁴⁾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.

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Overview

Our portfolio is a geographically diverse group of properties primarily located in select sub-markets within seven major office markets in the Eastern-half of the United States. We typically lease space to large, credit-worthy corporate or governmental tenants on a long-term basis. As of September 30, 2019, our average lease is approximately 20,000 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

Our current in-service portfolio of 55 office properties was 91.9% leased as of September 30, 2019 and 93.3% as of December 31, 2018. Scheduled lease expirations for the portfolio as a whole for the remainder of 2019 were 7.3% of our Annualized Lease Revenue as of September 30, 2019. The majority of those expirations related to the lease with our largest tenant, State of New York, at our 60 Broad Street building that was recently executed by the New York State Commissioner of General Services on behalf of the State of New York. To the extent new leases for currently vacant space outweigh or fall short of scheduled expirations, such leases would increase or decrease our leased percentage, respectively. Our leased percentage may also fluctuate from the impact of occupancy levels associated with our net acquisition and disposition activity, such as the acquisition of the Galleria 400 and Galleria 600 buildings in August 2019 with an average leased percentage of 84%.

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, 2019, we had approximately 591,000 square feet of executed leases related to currently vacant space that had not yet commenced (301,000 square feet of which relates to a new, full-building lease at our Enclave Place building in Houston, Texas) and approximately 468,000 square feet of commenced leases that were in some form of rental and/or operating expense 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.

Same Store NOI increased 5.0% and 0.5% on a cash and accrual basis, respectively, for the three months ended September 30, 2019 as compared to the three months ended September 30, 2018. The increase in cash basis Same Store NOI was attributable to the expiration of lease abatements. The slight increase in accrual basis Same Store NOI was related to the commencement of leases with higher straight-line rents, offset by down times between leases at 200 South Orange Avenue and 1155 Perimeter Center West, and lower overall occupancy levels. Property NOI and Same Store NOI comparisons for any given period may still 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

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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, 2019, we had no off-balance sheet arrangements. For further information regarding our commitments under our debt obligations, see the Contractual Obligations table included in Item 7. of our Annual Report on Form 10-K for the year ended December 31, 2018.

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, 2018 for a discussion of our critical accounting policies. There have been no material changes to these policies during the nine months ended September 30, 2019.

Accounting Pronouncements Adopted during the Nine Months Ended September 30, 2019

Leases

During the nine months ended September 30, 2019, we adopted ASU No. 2016-02, Leases (Topic 842), as well as various associated updates and amendments, which together comprise the requirements for lease accounting under Accounting Standards Codification 842 ("ASC 842"). ASC 842 fundamentally changed the definition of a lease, as well as the accounting for operating leases, by requiring lessees to recognize a liability to make lease payments and a right-of-use asset representing the right to use the leased asset over the term of the lease. ASC 842 also prohibits the capitalization of internal direct payroll costs associated with negotiating and executing leases. Accounting for leases by lessors is substantially unchanged from prior practice as lessors continue to recognize lease revenue on a straight-line basis. Substantially all of our leases are with tenants (as lessees) in buildings owned and operated by us (as lessor). Operating leases where we are the lessee consist primarily of office space in buildings owned by a third party. The accounting for these leases resulted in recording immaterial right-of-use assets and lease liabilities.

In conjunction with adopting ASC 842, we adopted certain optional practical expedients, transition amendments, or made accounting policy elections as further detailed in Note 2 to our accompanying consolidated financial statements.

Stock Compensation to Nonemployees

During the nine months ended September 30, 2019, we adopted ASU No. 2018-07, Stock Compensation (Topic 718), Improvements to Nonemployee Share-Based Payment Accounting ("ASU 2018-07"). The provisions of ASU 2018-07 align accounting for stock based compensation for non-employees for goods and services with existing accounting for similar compensation for employees. ASU 2018-07 requires an entity to remeasure liability-classified awards that have not been settled by the date of adoption and equity-classified awards for which a measurement date has not been established through a cumulative-effect adjustment to retained earnings as of January 1, 2019. Our only awards affected by ASU 2018-07 are equity-

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classified award grants to our independent board of directors, which have been historically recognized in the same manner prescribed by the newly adopted standard. As such, there was no cumulative effect adjustment recognized upon adoption.

Other Recent Accounting Pronouncements

The FASB has issued 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. Additionally, the provisions change the classification of credit losses related to available-for-sale securities to an allowance, rather than a direct reduction of the amortized cost of the securities. Further, the FASB has 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. Both ASU 2018-19 and the Credit Loss Amendments are effective in the first quarter of 2020, with early adoption permitted as of January 1, 2019. We are currently evaluating the potential impact of adoption; however, substantially all of our receivables are operating lease receivables and as such, we do not anticipate any material impact to our consolidated financial statements as a result of adoption of the Credit Loss Amendments and ASU 2018-19.

Related-Party Transactions and Agreements

During the nine months ended September 30, 2019, we entered into employment or retirement agreements with certain of our current and former executive officers as more fully described in our Definitive Proxy Statement and Current Report on Form 8-K filed on March 19, 2019. There were no other related-party transactions during the nine months ended September 30, 2019.

Contractual Obligations

There were no material changes in our contractual obligations during the three and nine months ended September 30, 2019. For further information, see our annual disclosures related to contractual obligations in Item 7. of our Annual Report on Form 10-K for the year ended December 31, 2018.

Commitments and Contingencies

We are subject to certain commitments and contingencies with regard to certain transactions. Refer to Note 8 of our consolidated financial statements for further explanation. Examples of such commitments and contingencies include:

•Commitments Under Existing Lease Agreements; and

•Contingencies Related to Tenant Audits/Disputes.

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. 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 and $100 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.

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The estimated fair value of our debt was approximately $1.9 billion as of September 30, 2019 and $1.7 billion as of December 31, 2018. Our interest rate swap agreements in place as of both September 30, 2019 and December 31, 2018 carried a notional amount totaling $450 million with a weighted-average fixed interest rate (not including the corporate credit spread) of 2.30%.

As of September 30, 2019, our total outstanding debt subject to fixed, or effectively fixed, interest rates totaling approximately $1.4 billion has an average effective interest rate of approximately 3.79% per annum with expirations ranging from 2021 to 2025. 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, 2019, we had $398 million outstanding on our $500 Million Unsecured 2018 Line of Credit. However, we used the sales proceeds from the sale of 500 West Monroe Street on October 28, 2019 to repay substantially all of the outstanding balance 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), resulting in an total interest rate of 2.95%. The current stated interest rate spread on $100 million of the $250 Million Unsecured 2018 Term Loan that is not effectively fixed through interest rate swaps is LIBOR plus 1.60% (based on our current corporate credit rating), which, as of September 30, 2019, resulted in an interest rate of 3.64%. 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, 2019 would increase interest expense approximately $5.0 million on a per annum basis.

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 Rule 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, 2019 that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

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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

There have been no known material changes from the risk factors previously disclosed in our Annual Report on Form 10-K for the year ended December 31, 2018.

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 2019.

(b)Not applicable.

(c)During the three months ended September 30, 2019, we repurchased shares of our common stock in the open market solely in order to reissue such shares under our dividend reinvestment plan (the "DRP"). Such stock repurchases for the quarter ended September 30, 2019 are as follows:

Period	Total Number of Shares Purchased (in thousands)	Average Price Paid per Share		Total Number of Shares  Purchased as Part of Publicly Announced Plan (in thousands) (1)	Maximum Approximate Dollar Value of Shares Available That May Yet Be Purchased Under the Plan (in thousands)
July 1, 2019 to July 31, 2019	—	$	—	—	$	74,089
August 1, 2019 to August 31, 2019	—	$	—	—	$	74,089
September 1, 2019 to September 30, 2019	178	$	20.35	—	$	74,089	(1)
Total	178	$	20.35	—

⁽¹⁾Amounts available for purchase relate only to our Board-authorized stock repurchase plan under our current authorization to repurchase shares of our common stock through February 21, 2020.

ITEM 3. DEFAULTS UPON SENIOR SECURITIES

Not applicable.

ITEM 4. MINE SAFETY DISCLOSURES

Not applicable.

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ITEM 5. OTHER INFORMATION

None.

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)
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

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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 30, 2019	By:	/s/ Robert E. Bowers
			Robert E. Bowers
			Chief Financial Officer and Executive Vice President
			(Principal Financial Officer and Duly Authorized Officer)

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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, 2019 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 30, 2019

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, 2019 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 30, 2019

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, 2019, 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 30, 2019

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, 2019, 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 30, 2019

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Subsequent Events

9 Months Ended

Sep. 30, 2019

Subsequent Events [Abstract]

Subsequent Events

Subsequent Events

Fourth Quarter Dividend Declaration

On October 30, 2019, the Board of Directors of Piedmont declared a dividend for the fourth quarter of 2019 in the amount of $0.21 per common share outstanding to stockholders of record as of the close of business on November 29, 2019. Such dividend will be paid on January 3, 2020.

Disposition Activity

On October 28, 2019, Piedmont closed on the sale of the 500 West Monroe Street building with an unrelated third party for $412 million ($426 per square foot). The 500 West Monroe Street building, an approximately 967,000 square foot office building, is 100% leased.

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Debt (Tables)

9 Months Ended

Sep. 30, 2019

Debt Disclosure [Abstract]

Schedule of Debt

The following table summarizes the terms of Piedmont’s indebtedness outstanding as of September 30, 2019 and December 31, 2018 (in thousands):

Facility (1)	Stated Rate		Effective Rate (2)			Maturity		Amount Outstanding as of
								September 30, 2019		December 31, 2018
Secured (Fixed)
$35 Million Fixed-Rate Loan (3)	5.55	%	3.75	%		9/1/2021		$	29,033	$	29,706
$160 Million Fixed-Rate Loan (4)	3.48	%	3.58	%		7/5/2022		160,000		160,000
Net premium and unamortized debt issuance costs								418		645
Subtotal/Weighted Average (5)	3.80	%						189,451		190,351
Unsecured (Variable and Fixed)
Amended and Restated $300 Million Unsecured 2011 Term Loan	LIBOR +  1.00%		3.20	%	(7)	11/30/2021		300,000		300,000
$500 Million Unsecured 2018 Line of Credit (6)	LIBOR + 0.90%		2.95	%		9/30/2022	(8)	398,000		205,000
$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 + 1.60%		3.93	%	(9)	3/31/2025		250,000		250,000
Discounts and unamortized debt issuance costs								(8,207)		(9,879)
Subtotal/Weighted Average (5)	3.58	%						1,689,793		1,495,121
Total/Weighted Average (5)	3.61	%						$	1,879,244	$	1,685,472

⁽¹⁾Other than the $35 Million Fixed-Rate Loan, all of Piedmont’s outstanding debt as of September 30, 2019 and December 31, 2018 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⁾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, 2019.

⁽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⁾The facility has a stated variable rate; however, Piedmont has entered into interest rate swap agreements which effectively fix, exclusive of changes in Piedmont's credit rating, the rate to that shown as the effective rate through the maturity date of the interest rate swap agreements (see Note 5 for more detail).

⁽⁸⁾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.

⁽⁹⁾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, $150 million of the principal balance to 4.11% through March 29, 2020, and $100 million of the principal balance to 4.21% from March 30, 2020 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, 2019 (see Note 5 for more detail).

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Assets Held for Sale (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Total other assets held for sale, net	$ 40,036	$ 61,233
Accrued expenses	7,275	8,780
Disposal Group, Held-for-sale, Not Discontinued Operations
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Accumulated depreciation (building improvements)	(61,579)	(102,476)
Total real estate assets held for sale, net	213,094	331,068
Straight-line rent receivables	26,132	36,584
Prepaid expenses and other assets	452	1,095
Deferred lease costs, less accumulated amortization of $7,887 and $9,138 as of September 30, 2019 and December 31, 2018, respectively	13,452	23,554
Accumulated amortization on deferred lease costs	(7,887)	(9,138)
Total other assets held for sale, net	40,036	61,233
Accrued expenses	7,275	8,780
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:	36,990	67,552
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:	176,066	261,463
Disposal Group, Held-for-sale, Not Discontinued Operations | Construction in progress
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Real estate assets held for sale, net:	$ 38	$ 2,053

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Derivative Instruments (Details)	3 Months Ended		9 Months Ended
	Sep. 30, 2019 USD ($) contract	Sep. 30, 2018 USD ($)	Sep. 30, 2019 USD ($) contract	Sep. 30, 2018 USD ($)	Dec. 31, 2018 USD ($)
Derivative [Line Items]
Maximum period of extension term			66 months
Interest Rate Cash Flow Hedge Derivative at Fair Value, Net [Abstract]
Gross derivative assets	$ 0		$ 0		$ 1,199,000
Gross derivative liabilities	(6,862,000)		(6,862,000)		(839,000)
Net derivative asset/(liability)	(6,862,000)		(6,862,000)		$ 360,000
Amount of gain/(loss) recognized in OCI	(1,386,000)	$ 1,144,000	(6,874,000)	$ 4,408,000
Total amount of Interest Expense presented in the consolidated statements of income	(16,145,000)	(15,849,000)	(46,750,000)	(45,294,000)
Total amount of Loss on Extinguishment of Debt presented in the consolidated statements of income	0	0	0	(1,680,000)
Loss on write off of discount and unamortized debt issuance costs			400,000
Gain (loss) to be reclassified	200,000		200,000
Gain (loss) from hedge ineffectiveness	0	0	0	0
Assets needed for immediate settlement, aggregate fair value	7,100,000		7,100,000
Interest rate swaps
Derivative [Line Items]
Total notional amount	450,000,000		450,000,000
Interest Rate Cash Flow Hedge Derivative at Fair Value, Net [Abstract]
Total amount of Interest Expense presented in the consolidated statements of income	(16,145,000)	(15,849,000)	(46,750,000)	(45,294,000)
Interest rate swaps | Interest Expense
Interest Rate Cash Flow Hedge Derivative at Fair Value, Net [Abstract]
Amount of gain/(loss) recognized in OCI	(1,386,000)	1,144,000	(6,874,000)	4,408,000
Amount of gain/(loss) reclassified from OCI	427,000	434,000	1,871,000	885,000
Interest rate swaps | Gain (Loss) On Extinguishment Of Debt
Interest Rate Cash Flow Hedge Derivative at Fair Value, Net [Abstract]
Amount of gain/(loss) reclassified from OCI	0	$ 0	0	$ (1,258,000)
Unsecured Debt | Amended and Restated $300 Million Unsecured 2011 Term Loan
Derivative [Line Items]
Face amount of debt instrument	$ 300,000,000		$ 300,000,000
Unsecured Debt | Amended and Restated $300 Million Unsecured 2011 Term Loan | Interest rate swaps
Derivative [Line Items]
Number of Swap Agreements | contract	3		3
Total notional amount	$ 300,000,000		$ 300,000,000
Unsecured Debt | $250 Million Unsecured 2018 Term Loan
Derivative [Line Items]
Face amount of debt instrument	250,000,000		250,000,000
Hedged portion of long-term debt	150,000,000		150,000,000
Total notional amount	$ 150,000,000		$ 150,000,000
Unsecured Debt | $250 Million Unsecured 2018 Term Loan | Interest rate swaps
Derivative [Line Items]
Number of Swap Agreements | contract	2		2
Total notional amount	$ 100,000,000		$ 100,000,000
Unsecured Debt | $250 Million Unsecured 2018 Term Loan Maturing 2020 | Interest rate swaps
Derivative [Line Items]
Number of Swap Agreements | contract	1		1
Total notional amount	$ 50,000,000		$ 50,000,000

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Guarantor and Non-Guarantor Financial Information (Balance Sheets) (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017
Assets:
Land	$ 506,440			$ 470,432
Buildings and improvements, less accumulated depreciation	2,327,055			2,121,570
Intangible lease assets, less accumulated amortization	88,371			77,676
Construction in progress	13,866			15,848
Real estate assets held for sale, net	213,094			331,068
Total real estate assets	3,148,826			3,016,594
Cash and cash equivalents	10,284			4,571	$ 6,807			$ 7,382
Tenant and straight-line rent receivables	157,288			147,562
Investment in subsidiaries	0			0
Notes receivable	0			0
Prepaid expenses, restricted cash, escrows, interest rate swaps, and other assets	28,963			27,353
Goodwill	98,918			98,918
Deferred lease costs, net	267,616			236,198
Other assets held for sale, net	40,036			61,233
Total assets	3,751,931			3,592,429
Liabilities:
Debt, net	1,879,244			1,685,472
Accounts payable, accrued expenses, interest rate swaps and accrued capital expenditures	114,812			121,550
Deferred income	27,985			28,779
Intangible lease liabilities, net	34,970			35,708
Interest rate swaps	6,862			839
Other liabilities held for sale	7,275			8,780
Total liabilities	2,071,148			1,880,289
Equity:
Total stockholders’ equity	1,680,783	$ 1,702,975	$ 1,723,522	1,712,140	$ 1,733,996	$ 1,743,056	$ 1,789,588	$ 1,986,489
Total liabilities and stockholders’ equity	3,751,931			3,592,429
Eliminations
Assets:
Land	0			0
Buildings and improvements, less accumulated depreciation	(300)			(300)
Intangible lease assets, less accumulated amortization	0			0
Construction in progress	0			0
Real estate assets held for sale, net	0			0
Total real estate assets	(300)			(300)
Cash and cash equivalents	0			(518)
Tenant and straight-line rent receivables	0			0
Investment in subsidiaries	(4,718,747)			(4,448,625)
Notes receivable	(145,310)			(145,310)
Prepaid expenses, restricted cash, escrows, interest rate swaps, and other assets	(9)			(24)
Goodwill	0			0
Deferred lease costs, net	0			0
Other assets held for sale, net	0			0
Total assets	(4,864,366)			(4,594,777)
Liabilities:
Debt, net	(145,310)			(145,310)
Accounts payable, accrued expenses, interest rate swaps and accrued capital expenditures	(9)			(542)
Deferred income	0			0
Intangible lease liabilities, net	0			0
Interest rate swaps	0
Other liabilities held for sale	0			0
Total liabilities	(145,319)			(145,852)
Equity:
Total stockholders’ equity	(4,719,047)			(4,448,925)
Total liabilities and stockholders’ equity	(4,864,366)			(4,594,777)
Piedmont (Parent) (Guarantor) | Reportable Legal Entities
Assets:
Land	0			0
Buildings and improvements, less accumulated depreciation	0			0
Intangible lease assets, less accumulated amortization	0			0
Construction in progress	0			0
Real estate assets held for sale, net	0			0
Total real estate assets	0			0
Cash and cash equivalents	150			150
Tenant and straight-line rent receivables	0			0
Investment in subsidiaries	1,681,492			1,744,122
Notes receivable	0			0
Prepaid expenses, restricted cash, escrows, interest rate swaps, and other assets	35			42
Goodwill	0			0
Deferred lease costs, net	0			0
Other assets held for sale, net				0
Total assets	1,681,677			1,744,314
Liabilities:
Debt, net	0			0
Accounts payable, accrued expenses, interest rate swaps and accrued capital expenditures	894			32,174
Deferred income	0			0
Intangible lease liabilities, net	0			0
Interest rate swaps	0
Other liabilities held for sale	0			0
Total liabilities	894			32,174
Equity:
Total stockholders’ equity	1,680,783			1,712,140
Total liabilities and stockholders’ equity	1,681,677			1,744,314
Piedmont OP (the Issuer) | Reportable Legal Entities
Assets:
Land	36,094			36,094
Buildings and improvements, less accumulated depreciation	186,269			176,927
Intangible lease assets, less accumulated amortization	0			0
Construction in progress	1,058			5,708
Real estate assets held for sale, net	0			0
Total real estate assets	223,421			218,729
Cash and cash equivalents	5,758			0
Tenant and straight-line rent receivables	16,514			16,143
Investment in subsidiaries	3,037,093			2,704,337
Notes receivable	810			810
Prepaid expenses, restricted cash, escrows, interest rate swaps, and other assets	6,227			5,682
Goodwill	98,918			98,918
Deferred lease costs, net	16,567			15,158
Other assets held for sale, net	0			0
Total assets	3,405,308			3,059,777
Liabilities:
Debt, net	1,689,749			1,495,065
Accounts payable, accrued expenses, interest rate swaps and accrued capital expenditures	16,054			15,382
Deferred income	3,693			2,274
Intangible lease liabilities, net	0			0
Interest rate swaps	6,862
Other liabilities held for sale	0			0
Total liabilities	1,716,358			1,512,721
Equity:
Total stockholders’ equity	1,688,950			1,547,056
Total liabilities and stockholders’ equity	3,405,308			3,059,777
Non-Guarantors | Reportable Legal Entities
Assets:
Land	470,346			434,338
Buildings and improvements, less accumulated depreciation	2,141,086			1,944,943
Intangible lease assets, less accumulated amortization	88,371			77,676
Construction in progress	12,808			10,140
Real estate assets held for sale, net	213,094			331,068
Total real estate assets	2,925,705			2,798,165
Cash and cash equivalents	4,376			4,939
Tenant and straight-line rent receivables	140,774			131,419
Investment in subsidiaries	162			166
Notes receivable	144,500			144,500
Prepaid expenses, restricted cash, escrows, interest rate swaps, and other assets	22,710			21,653
Goodwill	0			0
Deferred lease costs, net	251,049			221,040
Other assets held for sale, net	40,036			61,233
Total assets	3,529,312			3,383,115
Liabilities:
Debt, net	334,805			335,717
Accounts payable, accrued expenses, interest rate swaps and accrued capital expenditures	97,873			74,536
Deferred income	24,292			26,505
Intangible lease liabilities, net	34,970			35,708
Interest rate swaps	0
Other liabilities held for sale	7,275			8,780
Total liabilities	499,215			481,246
Equity:
Total stockholders’ equity	3,030,097			2,901,869
Total liabilities and stockholders’ equity	$ 3,529,312			$ 3,383,115

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Subsequent Events (Details) $ / shares in Units, ft² in Thousands, $ in Thousands			9 Months Ended
	Oct. 30, 2019 $ / shares	Oct. 28, 2019 USD ($) ft² $ / ft²	Sep. 30, 2019 USD ($)	Sep. 30, 2018 USD ($)
Subsequent Event [Line Items]
Net sales proceeds from wholly-owned properties			$ 180,975	$ 419,554
Subsequent Event
Subsequent Event [Line Items]
Common stock dividends (in dollars per share) | $ / shares	$ 0.21
Subsequent Event | West Monroe Street
Subsequent Event [Line Items]
Net sales proceeds from wholly-owned properties		$ 412,000
Proceeds from sale of real estate assets | $ / ft²		(426)
Area of real estate property (in sq ft) | ft²		967
Leased percentage of real estate asset		100.00%

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Stock Based Compensation

9 Months Ended

Sep. 30, 2019

Disclosure of Compensation Related Costs, Share-based Payments [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. Employee awards 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 described above 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, 2019 is as follows:

	Shares		Weighted-Average Grant Date Fair Value
Unvested and Potential Stock Awards as of December 31, 2018	1,227,483		$	23.14
Deferred Stock Awards Granted	354,057		$	21.02
Increase in Estimated Potential Share Award based on Performance	260,205		$	28.31
Performance Stock Awards Vested	(352,404)	(1)	$	25.83
Deferred Stock Awards Vested	(440,450)	(1)	$	19.66
Deferred Stock Awards Forfeited	(14,518)		$	19.16
Unvested and Potential Stock Awards as of September 30, 2019	1,034,373		$	25.10

⁽¹⁾Includes performance share and deferred stock awards that were settled in cash in July 2019 in conjunction with the senior management transition that occurred on June 30, 2019.

The following table provides additional information regarding stock award activity during the three and nine months ended September 30, 2019 and 2018, respectively (in thousands, except per share amounts):

	Three Months Ended				Nine Months Ended
	September 30, 2019		September 30, 2018		September 30, 2019		September 30, 2018
Weighted-Average Grant Date Fair Value of Deferred Stock Granted During the Period	$	—	$	—	$	21.02	$	17.84
Total Grant Date Fair Value of Deferred Stock Vested During the Period	$	—	$	16	$	8,658	$	6,378
Share-based Liability Awards Paid During the Period (1)	$	3,444	$	—	$	6,683	$	2,947

⁽¹⁾Amounts reflect the issuance of performance share awards related to the 2016-18 and 2015-17 Performance Share Plans during the nine months ended September 30, 2019 and 2018, 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, 2019 is as follows:

Date of grant	Type of Award	Net Shares Granted (1)	Grant Date Fair Value		Vesting Schedule	Unvested Shares
May 18, 2017	Deferred Stock Award	196,036	$	21.38	Of the shares granted, 25% vested on the date of grant, and 25% vested or will vest on May 18, 2018, 2019, and 2020, respectively.	40,942
May 18, 2017	Fiscal Year 2017-2019 Performance Share Program	—	$	30.45	Shares awarded, if any, will vest immediately upon determination of award in 2020.	153,368	(2)
May 17, 2018	Deferred Stock Award	271,169	$	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.	108,255
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 15, 2019	Deferred Stock Award-Board of Directors	25,974	$	20.79	Of the shares granted, 100% will vest by May 15, 2020.	25,974
May 3, 2019	Deferred Stock Award	300,825	$	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.	195,119
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.	310,041	(2)
Total						1,034,373

⁽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, 2019.

⁽²⁾Estimated based on Piedmont's cumulative TSR for the respective performance period through September 30, 2019. 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, 2019 and 2018, Piedmont recognized approximately $3.8 million and $1.7 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, 2019 and 2018, Piedmont recognized approximately $12.0 million and $6.7 million, respectively, of compensation expense related to stock awards of which $10.5 million and $5.6 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, 2019, a net total of 292,675 shares were issued to employees. As of September 30, 2019, approximately $4.5 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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Acquisitions

9 Months Ended

Sep. 30, 2019

Property, Plant and Equipment [Abstract]

Acquisitions

Acquisitions

During the nine months ended September 30, 2019, Piedmont acquired three properties and adjacent developable land using cash on hand and proceeds 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)
Galleria 100	Atlanta, Georgia	May 6, 2019	100	%	414,293	91	%	$	95.1
Galleria 400 and 600	Atlanta, Georgia	August 23, 2019	100	%	863,623	84	%	$	231.2

⁽¹⁾Price for both acquisitions includes the purchase of adjacent parcels of developable land, totaling approximately 11.7 acres.

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Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Real estate assets, at cost:
Land	$ 506,440	$ 470,432
Buildings and improvements, less accumulated depreciation of $772,122 and $718,070 as of September 30, 2019 and December 31, 2018, respectively	2,327,055	2,121,570
Intangible lease assets, less accumulated amortization of $77,483 and $87,391 as of September 30, 2019 and December 31, 2018, respectively	88,371	77,676
Construction in progress	13,866	15,848
Real estate assets held for sale, net	213,094	331,068
Total real estate assets	3,148,826	3,016,594
Cash and cash equivalents	10,284	4,571
Tenant receivables	10,091	10,800
Straight-line rent receivables	147,197	136,762
Restricted cash and escrows	1,820	1,463
Prepaid expenses and other assets	27,143	24,691
Goodwill	98,918	98,918
Interest rate swaps	0	1,199
Deferred lease costs, less accumulated amortization of $173,490 and $176,919 as of September 30, 2019 and December 31, 2018, respectively	267,616	236,198
Other assets held for sale, net	40,036	61,233
Total assets	3,751,931	3,592,429
Liabilities:
Unsecured debt, net of discount and unamortized debt issuance costs of $8,207 and $9,879 as of September 30, 2019 and December 31, 2018, respectively	1,689,793	1,495,121
Secured debt, net of premiums and unamortized debt issuance costs of $418 and $645 as of September 30, 2019 and December 31, 2018, respectively	189,451	190,351
Accounts payable, accrued expenses and accrued capital expenditures	114,812	93,739
Dividends payable	0	26,972
Deferred income	27,985	28,779
Intangible lease liabilities, less accumulated amortization of $49,613 and $59,144 as of September 30, 2019 and December 31, 2018, respectively	34,970	35,708
Interest rate swaps	6,862	839
Other liabilities held for sale	7,275	8,780
Total liabilities	2,071,148	1,880,289
Commitments and Contingencies (Note 8)	$ 0	$ 0
Stockholders’ Equity:
Shares-in-trust, shares authorized (in shares)	150,000,000	150,000,000
Shares-in-trust, shares outstanding (in shares)	0	0
Shares-in-trust, 150,000,000 shares authorized; none outstanding as of September 30, 2019 or December 31, 2018	$ 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
Preferred stock, no par value, 100,000,000 shares authorized; none outstanding as of September 30, 2019 or December 31, 2018	$ 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 outstanding (in shares)	125,783,408	126,218,554
Common stock, $0.01 par value, 750,000,000 shares authorized; 125,783,408 and 126,218,554 shares issued and outstanding as of September 30, 2019 and December 31, 2018, respectively	$ 1,258	$ 1,262
Additional paid-in capital	3,685,504	3,683,186
Cumulative distributions in excess of earnings	(2,007,438)	(1,982,542)
Other comprehensive income/(loss)	(283)	8,462
Piedmont stockholders’ equity	1,679,041	1,710,368
Noncontrolling interest	1,742	1,772
Total stockholders’ equity	1,680,783	1,712,140
Total liabilities and stockholders’ equity	$ 3,751,931	$ 3,592,429

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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
Balance at Dec. 31, 2017	$ 1,986,489	$ 1,424	$ 3,677,360	$ (1,702,281)	$ 8,164	$ 1,822
Balance (in shares) at Dec. 31, 2017		142,359,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Share repurchases as part of an announced plan	(231,888)	$ (125)		(231,763)
Share repurchases as part of an announced plan (in shares)		(12,482,000)
Dividends to common stockholders, stockholders of subsidiaries, and dividends reinvested	(28,311)		(19)	(28,284)		(8)
Shares issued and amortized under the 2007 Omnibus Incentive Plan, net of tax	2,901	$ 1	2,900
Shares issued and amortized under the 2007 Omnibus Incentive Plan, net of tax (in shares)		148,000
Net (income)/loss applicable to noncontrolling interest	(2)					(2)
Net income applicable to Piedmont	57,830			57,830
Other comprehensive loss	2,569				2,569
Balance at Mar. 31, 2018	1,789,588	$ 1,300	3,680,241	(1,904,404)	10,639	1,812
Balance (in shares) at Mar. 31, 2018		130,025,000
Balance at Dec. 31, 2017	1,986,489	$ 1,424	3,677,360	(1,702,281)	8,164	1,822
Balance (in shares) at Dec. 31, 2017		142,359,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net (income)/loss applicable to noncontrolling interest	(4)
Net income applicable to Piedmont	84,886
Other comprehensive loss	4,781
Balance at Sep. 30, 2018	1,733,996	$ 1,284	3,682,209	(1,964,135)	12,851	1,787
Balance (in shares) at Sep. 30, 2018		128,371,000
Balance at Mar. 31, 2018	1,789,588	$ 1,300	3,680,241	(1,904,404)	10,639	1,812
Balance (in shares) at Mar. 31, 2018		130,025,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Share repurchases as part of an announced plan	(32,897)	$ (18)	0	(32,879)
Share repurchases as part of an announced plan (in shares)		(1,861,000)
Dividends to common stockholders, stockholders of subsidiaries, and dividends reinvested	(26,997)		(32)	(26,950)		(15)
Shares issued and amortized under the 2007 Omnibus Incentive Plan, net of tax	920	$ 2	918
Shares issued and amortized under the 2007 Omnibus Incentive Plan, net of tax (in shares)		207,000
Net (income)/loss applicable to noncontrolling interest	(2)					(2)
Net income applicable to Piedmont	10,942			10,942
Other comprehensive loss	1,502				1,502
Balance at Jun. 30, 2018	1,743,056	$ 1,284	3,681,127	(1,953,291)	12,141	1,795
Balance (in shares) at Jun. 30, 2018		128,371,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Dividends to common stockholders, stockholders of subsidiaries, and dividends reinvested	(26,971)		(5)	(26,958)		(8)
Shares issued and amortized under the 2007 Omnibus Incentive Plan, net of tax	1,087	$ 0	1,087
Shares issued and amortized under the 2007 Omnibus Incentive Plan, net of tax (in shares)		0
Net (income)/loss applicable to noncontrolling interest	0
Net income applicable to Piedmont	16,114			16,114
Other comprehensive loss	710				710
Balance at Sep. 30, 2018	1,733,996	$ 1,284	3,682,209	(1,964,135)	12,851	1,787
Balance (in shares) at Sep. 30, 2018		128,371,000
Balance at Dec. 31, 2018	$ 1,712,140	$ 1,262	3,683,186	(1,982,542)	8,462	1,772
Balance (in shares) at Dec. 31, 2018	126,218,554	126,219,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Share repurchases as part of an announced plan	$ (12,482)	$ (7)		(12,475)
Share repurchases as part of an announced plan (in shares)		(728,000)
Dividends to common stockholders, stockholders of subsidiaries, and dividends reinvested	(26,430)		(48)	(26,375)		(7)
Shares issued and amortized under the 2007 Omnibus Incentive Plan, net of tax	2,880	$ 1	2,879
Shares issued and amortized under the 2007 Omnibus Incentive Plan, net of tax (in shares)		106,000
Net (income)/loss applicable to noncontrolling interest	1					1
Net income applicable to Piedmont	50,208			50,208
Other comprehensive loss	(2,795)				(2,795)
Balance at Mar. 31, 2019	1,723,522	$ 1,256	3,686,017	(1,971,184)	5,667	1,766
Balance (in shares) at Mar. 31, 2019		125,597,000
Balance at Dec. 31, 2018	$ 1,712,140	$ 1,262	3,683,186	(1,982,542)	8,462	1,772
Balance (in shares) at Dec. 31, 2018	126,218,554	126,219,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net (income)/loss applicable to noncontrolling interest	$ (3)
Net income applicable to Piedmont	66,783
Other comprehensive loss	(8,745)
Balance at Sep. 30, 2019	$ 1,680,783	$ 1,258	3,685,504	(2,007,438)	(283)	1,742
Balance (in shares) at Sep. 30, 2019	125,783,408	125,783,000
Balance at Mar. 31, 2019	$ 1,723,522	$ 1,256	3,686,017	(1,971,184)	5,667	1,766
Balance (in shares) at Mar. 31, 2019		125,597,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Dividends to common stockholders, stockholders of subsidiaries, and dividends reinvested	(26,522)		(94)	(26,415)		(13)
Shares issued and amortized under the 2007 Omnibus Incentive Plan, net of tax	1,960	$ 2	1,958
Shares issued and amortized under the 2007 Omnibus Incentive Plan, net of tax (in shares)		186,000
Net (income)/loss applicable to noncontrolling interest	(1)					(1)
Net income applicable to Piedmont	8,153			8,153
Other comprehensive loss	(4,137)				(4,137)
Balance at Jun. 30, 2019	1,702,975	$ 1,258	3,687,881	(1,989,446)	1,530	1,752
Balance (in shares) at Jun. 30, 2019		125,783,000
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	(1,603)	$ 0	(1,603)
Shares issued and amortized under the 2007 Omnibus Incentive Plan, net of tax (in shares)		0
Net (income)/loss applicable to noncontrolling interest	(3)					(3)
Net income applicable to Piedmont	8,422			8,422
Other comprehensive loss	(1,813)				(1,813)
Balance at Sep. 30, 2019	$ 1,680,783	$ 1,258	$ 3,685,504	$ (2,007,438)	$ (283)	$ 1,742
Balance (in shares) at Sep. 30, 2019	125,783,408	125,783,000

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Impairment Loss on Real Estate Assets	9 Months Ended
	Sep. 30, 2019
Real Estate [Abstract]
Impairment Loss on Real Estate Assets	Impairment Loss on Real Estate AssetsDuring the three 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 of $12.7 million, and recognized an impairment loss on real estate assets of approximately $2.0 million. Piedmont closed on the sale of The Dupree building on September 4, 2019.

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Summary of Significant Accounting Policies (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended			9 Months Ended		12 Months Ended
	Sep. 30, 2019	Mar. 31, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2017	Jan. 01, 2019
Concentration Risk [Line Items]
Weighted-average lease term of right-of-use assets				2 years
Right of use assets weighted-average discount rate	3.35%			3.35%
Rental and tenant reimbursement revenue	$ 130,579	$ 504,400	$ 124,518	$ 382,213	$ 372,491	$ 553,300
Fixed payments	105,207			311,503
Accounting Standards Update 2016-02
Concentration Risk [Line Items]
Right of use asset							$ 200
Lease liability							$ 200
Operating lease costs	18			55
Reclassification Adjustment | Accounting Standards Update 2016-02
Concentration Risk [Line Items]
Reclassification out of rental income		411,700	101,300		304,300	455,100
Reclassification out of tenant reimbursement		$ 92,700	23,200		68,200	$ 98,200
Rental and Tenant Reimbursement Revenue | Accounting Standards Update 2016-02
Concentration Risk [Line Items]
Uncollectible accounts expense	$ 65			$ 24
Property Operating Costs | Accounting Standards Update 2016-02
Concentration Risk [Line Items]
Uncollectible accounts expense			$ 0		$ 84

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

9 Months Ended

Sep. 30, 2019

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, 2019 and 2018, (in thousands) are outlined below:

	Nine Months Ended
	September 30, 2019		September 30, 2018
Accrued capital expenditures and deferred lease costs	$	29,828	$	21,784
Change in accrued dividends and discount on dividend reinvestments	$	(26,972)	$	(101,794)
Change in accrued share repurchases as part of an announced plan	$	(4,417)	$	(1,277)
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 statement of cash flows for the nine months ended September 30, 2019 and 2018, to the consolidated balance sheets for the respective period (in thousands):

	2019		2018
Cash and cash equivalents as of January 1, 2019 and 2018, respectively	$	4,571	$	7,382
Restricted cash and escrows as of January 1, 2019 and 2018, respectively	1,463		1,373
Cash, cash equivalents, and restricted cash and escrows, beginning of period, as presented in the accompanying consolidated statement of cash flows	$	6,034	$	8,755
Cash and cash equivalents as of September 30, 2019 and 2018, respectively	$	10,284	$	6,807
Restricted cash and escrows as of September 30, 2019 and 2018, respectively	1,820		1,374
Cash, cash equivalents, and restricted cash and escrows, end of period, as presented in the accompanying consolidated statement of cash flows	$	12,104	$	8,181

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Earnings Per Share (Details) - shares	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Earnings Per Share [Abstract]
Anti-dilutive shares excluded (in shares)	251	0	54,372	125,941
Weighted-average common shares – basic (in shares)	125,783,408	128,371,062	125,684,202	130,837,223
Plus: Incremental weighted-average shares from time-vested deferred and performance stock awards (in shares)	457,000	448,000	506,000	350,000
Weighted-average common shares – diluted (in shares)	126,239,744	128,818,658	126,189,851	131,187,127

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Guarantor and Non-Guarantor Financial Information (Cash Flows) (Details) - USD ($)	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
Condensed Financial Statements, Captions [Line Items]
Net cash provided by operating activities	$ 160,243,000	$ 138,322,000
Cash Flows from Investing Activities:
Investment in real estate assets and real estate related intangibles	(383,512,000)	(73,174,000)
Intercompany note receivable		0
Net sales proceeds from wholly-owned properties	180,975,000	419,554,000
Note receivable issuance	0	(3,200,000)
Deferred lease costs paid	(16,632,000)	(15,831,000)
Distributions from subsidiaries	0	0
Net cash (used in)/provided by investing activities	(219,169,000)	327,349,000
Cash Flows from Financing Activities:
Debt issuance and other costs paid	(91,000)	(947,000)
Proceeds from debt	550,000,000	820,061,000
Repayments of debt	(358,041,000)	(833,005,000)
Costs of issuance of common stock	(259,000)	0
Intercompany note payable		0
Value of shares withheld to pay tax obligations related to employee stock compensation	(3,295,000)	(2,219,000)
Repurchases of common stock as part of announced plan	(16,899,000)	(266,062,000)
Distributions	(106,419,000)	(184,073,000)
Net cash provided by/(used in) financing activities	64,996,000	(466,245,000)
Net increase/(decrease) in cash, cash equivalents, and restricted cash and escrows	6,070,000	(574,000)
Cash, cash equivalents, and restricted cash and escrows, beginning of period	6,034,000	8,755,000
Cash, cash equivalents, and restricted cash and escrows, end of period	12,104,000	8,181,000
Eliminations
Condensed Financial Statements, Captions [Line Items]
Net cash provided by operating activities	(138,471,000)	(204,920,000)
Cash Flows from Investing Activities:
Investment in real estate assets and real estate related intangibles	0	0
Intercompany note receivable		(88,000,000)
Net sales proceeds from wholly-owned properties	0	0
Note receivable issuance		0
Deferred lease costs paid	0	0
Distributions from subsidiaries	(269,382,000)	(427,417,000)
Net cash (used in)/provided by investing activities	(269,382,000)	(515,417,000)
Cash Flows from Financing Activities:
Debt issuance and other costs paid	0	0
Proceeds from debt	0	0
Repayments of debt	0	0
Costs of issuance of common stock	0
Intercompany note payable		88,000,000
Value of shares withheld to pay tax obligations related to employee stock compensation	0	0
Repurchases of common stock as part of announced plan	0	0
Distributions	408,371,000	632,337,000
Net cash provided by/(used in) financing activities	408,371,000	720,337,000
Net increase/(decrease) in cash, cash equivalents, and restricted cash and escrows	518,000	0
Cash, cash equivalents, and restricted cash and escrows, beginning of period	(518,000)	0
Cash, cash equivalents, and restricted cash and escrows, end of period	0	0
Piedmont (Parent) (Guarantor) | Reportable Legal Entities
Condensed Financial Statements, Captions [Line Items]
Net cash provided by operating activities	72,694,000	89,540,000
Cash Flows from Investing Activities:
Investment in real estate assets and real estate related intangibles	0	0
Intercompany note receivable		0
Net sales proceeds from wholly-owned properties	0	0
Note receivable issuance		0
Deferred lease costs paid	0	0
Distributions from subsidiaries	54,151,000	362,784,000
Net cash (used in)/provided by investing activities	54,151,000	362,784,000
Cash Flows from Financing Activities:
Debt issuance and other costs paid	0	0
Proceeds from debt	0	0
Repayments of debt	0	0
Costs of issuance of common stock	(259,000)
Intercompany note payable		0
Value of shares withheld to pay tax obligations related to employee stock compensation	(3,295,000)	(2,219,000)
Repurchases of common stock as part of announced plan	(16,899,000)	(266,062,000)
Distributions	(106,392,000)	(184,043,000)
Net cash provided by/(used in) financing activities	(126,845,000)	(452,324,000)
Net increase/(decrease) in cash, cash equivalents, and restricted cash and escrows	0	0
Cash, cash equivalents, and restricted cash and escrows, beginning of period	150,000	150,000
Cash, cash equivalents, and restricted cash and escrows, end of period	150,000	150,000
Piedmont OP (the Issuer) | Reportable Legal Entities
Condensed Financial Statements, Captions [Line Items]
Net cash provided by operating activities	43,676,000	89,639,000
Cash Flows from Investing Activities:
Investment in real estate assets and real estate related intangibles	(13,561,000)	(6,074,000)
Intercompany note receivable		88,000,000
Net sales proceeds from wholly-owned properties	128,000	36,572,000
Note receivable issuance		0
Deferred lease costs paid	(1,210,000)	(1,826,000)
Distributions from subsidiaries	215,231,000	64,633,000
Net cash (used in)/provided by investing activities	200,588,000	181,305,000
Cash Flows from Financing Activities:
Debt issuance and other costs paid	(91,000)	(947,000)
Proceeds from debt	550,000,000	820,061,000
Repayments of debt	(357,000,000)	(832,000,000)
Costs of issuance of common stock	0
Intercompany note payable		0
Value of shares withheld to pay tax obligations related to employee stock compensation	0	0
Repurchases of common stock as part of announced plan	0	0
Distributions	(431,416,000)	(258,907,000)
Net cash provided by/(used in) financing activities	(238,507,000)	(271,793,000)
Net increase/(decrease) in cash, cash equivalents, and restricted cash and escrows	5,757,000	(849,000)
Cash, cash equivalents, and restricted cash and escrows, beginning of period	32,000	3,906,000
Cash, cash equivalents, and restricted cash and escrows, end of period	5,789,000	3,057,000
Non-Guarantors | Reportable Legal Entities
Condensed Financial Statements, Captions [Line Items]
Net cash provided by operating activities	182,344,000	164,063,000
Cash Flows from Investing Activities:
Investment in real estate assets and real estate related intangibles	(369,951,000)	(67,100,000)
Intercompany note receivable		0
Net sales proceeds from wholly-owned properties	180,847,000	382,982,000
Note receivable issuance		(3,200,000)
Deferred lease costs paid	(15,422,000)	(14,005,000)
Distributions from subsidiaries	0	0
Net cash (used in)/provided by investing activities	(204,526,000)	298,677,000
Cash Flows from Financing Activities:
Debt issuance and other costs paid	0	0
Proceeds from debt	0	0
Repayments of debt	(1,041,000)	(1,005,000)
Costs of issuance of common stock	0
Intercompany note payable		(88,000,000)
Value of shares withheld to pay tax obligations related to employee stock compensation	0	0
Repurchases of common stock as part of announced plan	0	0
Distributions	23,018,000	(373,460,000)
Net cash provided by/(used in) financing activities	21,977,000	(462,465,000)
Net increase/(decrease) in cash, cash equivalents, and restricted cash and escrows	(205,000)	275,000
Cash, cash equivalents, and restricted cash and escrows, beginning of period	6,370,000	4,699,000
Cash, cash equivalents, and restricted cash and escrows, end of period	$ 6,165,000	$ 4,974,000

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Summary of Significant Accounting Policies

9 Months Ended

Sep. 30, 2019

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, 2018.

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. Actual results could 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.

Accounting Pronouncements Adopted during the Nine Months Ended September 30, 2019

Leases

During the nine months ended September 30, 2019, Piedmont adopted Accounting Standards Update ("ASU") No. 2016-02, Leases (Topic 842), as well as various associated updates and amendments, which together comprise the requirements for lease accounting under Accounting Standards Codification 842 ("ASC 842"). ASC 842 fundamentally changed the definition of a lease, as well as the accounting for operating leases, by requiring lessees to recognize a liability to make lease payments and a right-of-use asset representing the right to use the leased asset over the term of the lease. ASC 842 also prohibits the capitalization of internal direct salary costs associated with negotiating and executing leases. Accounting for leases by lessors is substantially unchanged from prior practice as lessors continue to recognize lease revenue on a straight-line basis.

In conjunction with the adoption of ASC 842, Piedmont adopted the following optional practical expedients, transition amendments, or made accounting policy elections as follows:

•a package of optional practical expedients which precluded: (1) the reassessment of any expired or existing contracts to determine if they contain a lease or to determine lease classification; and (2) the write-off of any unamortized, previously capitalized, initial direct costs for any existing leases;

•an optional practical transition expedient provided by ASU No. 2018-01 which allowed Piedmont to exclude certain land easements in place as of January 1, 2019 from the new guidance;

•an optional practical expedient provided by ASU No. 2018-11 which allows certain non-lease operating expense reimbursements which are included in the underlying stated lease rate to be accounted for as part of an operating lease where Piedmont is the lessor;

•a transitional amendment which allows for the presentation of comparative periods in the year of adoption under ASC 840 (the former leasing guidance), effectively allowing for an initial adoption of ASC 842 (the new leasing guidance) on January 1, 2019 (the "Comparatives Under ASC 840 Option");

•an accounting policy election allowed by ASC 842 related to a recognition and measurement exception for short-term leases (defined as leases which are 12 months or less in duration) where Piedmont is the lessee. Piedmont's short-term lease expense reasonably reflects its lease commitments under such leases; and

•an accounting policy election allowed by ASU No. 2018-20 which permits Piedmont to exclude sales and other similar taxes from analysis to ascertain whether they are Piedmont's primary obligation (as lessor), and instead exclude such costs from revenue and account for them as costs of the lessee.

The nature of Piedmont's change in accounting principle relates primarily to its accounting for operating leases where Piedmont is a lessee for office space, as prescribed by ASC 842. Due to the adoption of the practical expedients outlined above, Piedmont has not adjusted prior-period information retrospectively, and there is a negligible decrease in net income attributable to Piedmont as a result of accounting for leases where Piedmont is the lessee under ASC 842 as compared to prior operating lease accounting.

Operating leases where Piedmont is the lessee relate primarily to office space in buildings owned by third parties. Piedmont recorded a right to use asset and corresponding lease liability of approximately $0.2 million using Piedmont's incremental

borrowing rate as the lease discount rate. For the three and nine months ended September 30, 2019, Piedmont recognized approximately $18,000 and $55,000 of operating lease costs, respectively. As of September 30, 2019, the weighted-average lease term of Piedmont's right of use assets is two years, and the weighted-average discount rate is 3.35%.

Piedmont evaluates contracts at commencement to determine if the contract contains a lease. If a contract is determined to contain a lease, the lease is evaluated to determine whether it is an operating or a financing lease. All of Piedmont's leases where Piedmont is the lessor are for the lessee's use of space in Piedmont's commercial office properties and are classified as operating leases. Lease payments are typically comprised of both fixed base rental payments and separately billed variable lease payments for reimbursement of services performed by Piedmont for the tenant as prescribed by the lease. Fixed base rental payments, as well as any fixed portion of reimbursement income, are recognized on a straight-line basis over the lease term. Tenant reimbursements are recognized as revenue in the period that the related operating cost is incurred. The option to extend or terminate our leases is specific to each underlying tenant agreement; however, generally Piedmont's leases contain penalties for early terminations. None of Piedmont's leases convey the right for the lessee to purchase the underlying property; however, certain leases convey the right of first offer or first refusal on the potential sale of the underlying real estate to the lessee.

Piedmont's future minimum lease payments from lessees under non-cancelable operating leases where Piedmont is the lessor as of September 30, 2019 is presented below (in thousands):

Years ending December 31:
2019 (1)	$	98,831
2020	382,738
2021	373,740
2022	357,475
2023	323,709
Thereafter	1,433,272
Total	$	2,969,765

⁽¹⁾Reflects rental payments for the fiscal period October 1, 2019 through December 31, 2019.

As required under the Comparatives Under ASC 840 Option described above, Piedmont's future minimum rental income from lessees under non-cancelable operating leases where Piedmont is the lessor as of December 31, 2018 is also presented below (in thousands):

Years ending December 31:
2019	$	370,495
2020	352,541
2021	337,951
2022	324,960
2023	291,603
Thereafter	1,247,649
Total	$	2,925,199

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, 2019, respectively, as follows (in thousands):

	Three Months Ended		Nine Months Ended
	September 30, 2019		September 30, 2019
Fixed payments	$	105,207	$	311,503
Variable payments	25,372		70,710
Total Rental and Tenant Reimbursement Revenue	$	130,579	$	382,213

Additionally, ASU No. 2018-19 clarifies that operating lease receivables are within the scope of ASC 842; therefore, in accordance with ASC 842, effective January 1, 2019, Piedmont elected to evaluate the collectibility of its operating lease receivables on a tenant/lease-specific basis and began recognizing changes in the collectibility assessment of its operating lease receivables as a reduction of rental and tenant reimbursement revenue, rather than as a bad debt expense, a component of property operating costs. Consequently, during the three and nine months ended September 30, 2019, Piedmont recognized approximately $65,000 and $24,000 of uncollectible operating lease receivables as a decrease in rental and reimbursement revenue, respectively, and during the three and nine months ended September 30, 2018, Piedmont recognized approximately $0 and $84,000 of expense related to uncollectible operating lease receivables as additional property operating costs, respectively.

Stock Compensation to Non-employees

During the nine months ended September 30, 2019, Piedmont adopted ASU No. 2018-07, Stock Compensation (Topic 718), Improvements to Non-employee Share-Based Payment Accounting ("ASU 2018-07"). The provisions of ASU 2018-07 align accounting for stock based compensation for non-employees for goods and services with existing accounting for similar compensation for employees. ASU 2018-07 requires an entity to remeasure liability-classified awards that have not been settled by the date of adoption and equity-classified awards for which a measurement date has not been established through a cumulative-effect adjustment to retained earnings as of January 1, 2019. Piedmont's only awards affected by ASU 2018-07 are equity-classified award grants to its independent board of directors, which have been historically recognized in the same manner prescribed by the newly adopted standard. As such, there was no cumulative effect adjustment recognized upon adoption.

Reclassifications

Although Piedmont has adopted the transitional amendment under ASC 842 described above, Piedmont has combined the presentation of rental income and tenant reimbursements in the accompanying consolidated statements of income for the prior periods to conform to the current period financial presentation under presentation guidance detailed in Accounting Standards Codification 205 Presentation of Financial Statements. These amounts included the presentation of approximately $101.3 million of rental income, and $23.2 million of tenant reimbursements for the three months ended September 30, 2018 as rental and tenant reimbursement revenue of $124.5 million. For the nine months ended September 30, 2018, these amounts included the presentation of approximately $304.3 million of rental income, and $68.2 million of tenant reimbursements as rental and tenant reimbursement revenue of $372.5 million. Further, we intend to make a similar reclassification for the years ended December 31, 2018 and 2017 in our Form 10-K for the year ending December 31, 2019. We will present approximately $411.7 million of rental income and $92.7 million of tenant reimbursements for the year ended December 31, 2018 as rental and tenant reimbursement revenue of $504.4 million. We will present approximately $455.1 million of rental income and $98.2 million of tenant reimbursements for the year ended December 31, 2017 as rental and tenant reimbursement revenue of $553.3 million. Finally, the subtotal of Revenues less Expenses was removed within the accompanying consolidated statements of income for the three and nine months ended September 30, 2018 to correct the prior period presentation, and will also be removed from prior annual periods in subsequent filings.

Other Recent Accounting Pronouncements

The FASB has issued 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. Additionally, the provisions change the classification of credit losses related to available-for-sale securities to an allowance, rather than a direct reduction of the amortized cost of the securities. Further, the FASB has 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. Both ASU 2018-19 and the Credit Loss Amendments are effective in the first quarter of 2020, with early adoption permitted as of January 1, 2019. Piedmont is currently evaluating the potential impact of adoption; however, substantially all of Piedmont's receivables are operating lease receivables and as such, Piedmont does not anticipate any material impact to its consolidated financial statements as a result of adoption of the Credit Loss Amendments and ASU 2018-19.

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Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Assets:
Intangible lease assets, accumulated amortization	$ 77,483	$ 87,391
Deferred lease costs, accumulated amortization	173,490	176,919
Liabilities:
Intangible lease liabilities, accumulated amortization	$ 49,613	$ 59,144
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)	125,783,408	126,218,554
Common stock, shares outstanding (in shares)	125,783,408	126,218,554
Secured Debt
Liabilities:
Discount (premiums) and unamortized debt issuance costs	$ 418	$ 645
Unsecured Debt
Liabilities:
Discount (premiums) and unamortized debt issuance costs	8,207	9,879
Building and improvements
Assets:
Buildings and improvements, accumulated depreciation	$ 772,122	$ 718,070

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Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
Cash Flows from Operating Activities:
Net income	$ 66,780	$ 84,882
Operating distributions received from unconsolidated joint ventures	0	10
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	80,004	81,112
Amortization of debt issuance costs net of favorable settlement of interest rate swaps	419	(215)
Other amortization	52,057	42,882
Loss on extinguishment of debt	0	1,665
Stock compensation expense	12,365	6,671
Gain on sale of real estate assets	(39,370)	(45,186)
Changes in assets and liabilities:
Increase in tenant and straight-line rent receivables	(10,660)	(12,361)
Increase in prepaid expenses and other assets	(1,958)	(8,496)
Decrease in accounts payable and accrued expenses	(2,496)	(10,377)
Increase/(decrease) in deferred income	1,149	(2,265)
Net cash provided by operating activities	160,243	138,322
Cash Flows from Investing Activities:
Acquisition of real estate assets and intangibles	(326,144)	(28,176)
Capitalized expenditures	(57,368)	(44,998)
Net sales proceeds from wholly-owned properties	180,975	419,554
Note receivable issuance	0	(3,200)
Deferred lease costs paid	(16,632)	(15,831)
Net cash (used in)/provided by investing activities	(219,169)	327,349
Cash Flows from Financing Activities:
Debt issuance and other costs paid	(91)	(947)
Proceeds from debt	550,000	820,061
Repayments of debt	(358,041)	(833,005)
Costs of issuance of common stock	(259)	0
Value of shares withheld for payment of taxes related to employee stock compensation	(3,295)	(2,219)
Repurchases of common stock as part of announced plan	(16,899)	(266,062)
Dividends paid and discount on dividend reinvestments	(106,419)	(184,073)
Net cash provided by/(used in) financing activities	64,996	(466,245)
Net increase/(decrease) in cash, cash equivalents, and restricted cash and escrows	6,070	(574)
Cash, cash equivalents, and restricted cash and escrows, beginning of period	6,034	8,755
Cash, cash equivalents, and restricted cash and escrows, end of period	$ 12,104	$ 8,181

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Fair Value Measurement of Financial Instruments

9 Months Ended

Sep. 30, 2019

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, notes receivable, 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, 2019 and December 31, 2018, respectively (in thousands):

	September 30, 2019					December 31, 2018
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)	$	10,284	$	10,284	Level 1	$	4,571	$	4,571	Level 1
Tenant receivables (1)	$	10,091	$	10,091	Level 1	$	10,800	$	10,800	Level 1
Restricted cash and escrows (1)	$	1,820	$	1,820	Level 1	$	1,463	$	1,463	Level 1
Interest rate swaps	$	—	$	—	Level 2	$	1,199	$	1,199	Level 2
Liabilities:
Accounts payable and accrued expenses (1)	$	14,090	$	14,090	Level 1	$	47,328	$	47,328	Level 1
Interest rate swaps	$	6,862	$	6,862	Level 2	$	839	$	839	Level 2
Debt, net	$	1,879,244	$	1,922,891	Level 2	$	1,685,472	$	1,698,213	Level 2

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

Piedmont's debt was carried at book value as of September 30, 2019 and December 31, 2018; however, to estimate its fair value as disclosed in the table above, Piedmont used 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 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 (further discussed in Note 5) are classified as “Interest rate swap” assets and liabilities in the accompanying consolidated balance sheets and were carried at estimated fair value as of September 30, 2019 and December 31, 2018. The estimated fair value of these derivative instruments was determined using widely accepted valuation techniques such as discounted cash flow analysis based on the contractual terms of the derivatives including the period to maturity of each instrument. Observable market-based inputs, including interest rate curves and implied volatilities, were also used. 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 for both Piedmont and the counterparties that were at risk as of the valuation date. The credit risks of both Piedmont and its counterparties were factored into the calculation of the estimated fair value of the interest rate swaps; however, as of September 30, 2019 and December 31, 2018, this credit valuation adjustment did not comprise a material portion of the estimated fair value. Therefore, Piedmont believes that any unobservable inputs (Level 3) 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 assets or liabilities.

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Assets Held for Sale

9 Months Ended

Sep. 30, 2019

Discontinued Operations and Disposal Groups [Abstract]

Assets Held for Sale

Assets Held for Sale

As of September 30, 2019, the 500 West Monroe Street building met the criteria for held for sale classification; consequently, its assets were reclassified as held for sale as of September 30, 2019 and December 31, 2018. The sale closed on October 28, 2019. Additionally, the One Independence Square building in Washington, D.C. also met the criteria for held for sale classification as of December 31, 2018 and was sold on February 28, 2019. Details of assets held for sale as of September 30, 2019 and December 31, 2018 are presented below (in thousands):

	September 30, 2019		December 31, 2018
Real estate assets held for sale, net:
Land	$	36,990	$	67,552
Building and improvements, less accumulated depreciation of $61,579 and $102,476 as of September 30, 2019 and December 31, 2018, respectively	176,066		261,463
Construction in progress	38		2,053
Total real estate assets held for sale, net	$	213,094	$	331,068
Other assets held for sale, net:
Straight-line rent receivables	$	26,132	$	36,584
Prepaid expenses and other assets	452		1,095
Deferred lease costs, less accumulated amortization of $7,887 and $9,138 as of September 30, 2019 and December 31, 2018, respectively	13,452		23,554
Total other assets held for sale, net	$	40,036	$	61,233
Other liabilities held for sale:
Accrued expenses as of September 30, 2019 and December 31, 2018, respectively	$	7,275	$	8,780

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Summary of Significant Accounting Policies (Schedule of Future Minimum Rental Income) (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Accounting Policies [Abstract]
2019	$ 98,831
2020	382,738
2021	373,740
2022	357,475
2023	323,709
Thereafter	1,433,272
Total	$ 2,969,765
2019		$ 370,495
2020		352,541
2021		337,951
2022		324,960
2023		291,603
Thereafter		1,247,649
Total		$ 2,925,199

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Earnings Per Share (Tables)

9 Months Ended

Sep. 30, 2019

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, 2019 and 2018, respectively (in thousands):

	Three Months Ended		Nine Months Ended
	September 30, 2019	September 30, 2018	September 30, 2019	September 30, 2018
Weighted-average common shares – basic	125,783	128,371	125,684	130,837
Plus: Incremental weighted-average shares from time-vested deferred and performance stock awards	457	448	506	350
Weighted-average common shares – diluted	126,240	128,819	126,190	131,187

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Label	Element	Value
AOCI Attributable to Parent [Member]
Cumulative Effect of New Accounting Principle in Period of Adoption	us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	$ (94,000)
Retained Earnings [Member]
Cumulative Effect of New Accounting Principle in Period of Adoption	us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	$ 94,000

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Guarantor and Non-Guarantor Financial Information

9 Months Ended

Sep. 30, 2019

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Guarantor and Non-Guarantor Financial Information

Guarantor and Non-Guarantor Financial Information

The following condensed consolidating financial information for Piedmont (the "Parent", "Guarantor", and/or "Consolidated"), Piedmont OP (the "Issuer"), and the other directly and indirectly owned subsidiaries of Piedmont as the Guarantor (the "Non-Guarantors") is provided pursuant to the requirements of Rule 3-10 of Regulation S-X regarding financial statements of guarantors and issuers of guaranteed registered securities. The Issuer is a wholly-owned subsidiary of the Guarantor, and all guarantees by the Guarantor of securities issued by the Issuer are full and unconditional. The principal elimination entries relate to investments in subsidiaries and intercompany balances and transactions, including transactions with the Non-Guarantor Subsidiaries.

Condensed Consolidating Balance Sheets
As of September 30, 2019
(in thousands)	Piedmont (Parent) (Guarantor)		Piedmont OP (the Issuer)		Non-Guarantors		Eliminations		Consolidated
Assets:
Real estate assets, at cost:
Land	$	—	$	36,094	$	470,346	$	—	$	506,440
Buildings and improvements, less accumulated depreciation	—		186,269		2,141,086		(300)		2,327,055
Intangible lease assets, less accumulated amortization	—		—		88,371		—		88,371
Construction in progress	—		1,058		12,808		—		13,866
Real estate assets held for sale, net	—		—		213,094		—		213,094
Total real estate assets	—		223,421		2,925,705		(300)		3,148,826
Cash and cash equivalents	150		5,758		4,376		—		10,284
Tenant and straight-line rent receivables	—		16,514		140,774		—		157,288
Investment in subsidiaries	1,681,492		3,037,093		162		(4,718,747)		—
Notes receivable	—		810		144,500		(145,310)		—
Prepaid expenses, restricted cash, escrows, interest rate swaps, and other assets	35		6,227		22,710		(9)		28,963
Goodwill	—		98,918		—		—		98,918
Deferred lease costs, net	—		16,567		251,049		—		267,616
Other assets held for sale, net			—		40,036		—		40,036
Total assets	$	1,681,677	$	3,405,308	$	3,529,312	$	(4,864,366)	$	3,751,931
Liabilities:
Debt, net	$	—	$	1,689,749	$	334,805	$	(145,310)	$	1,879,244
Accounts payable, accrued expenses, and accrued capital expenditures	894		16,054		97,873		(9)		114,812
Deferred income	—		3,693		24,292		—		27,985
Intangible lease liabilities, net	—		—		34,970		—		34,970
Interest rate swaps	—		6,862		—		—		6,862
Liabilities held for sale	—		—		7,275		—		7,275
Total liabilities	894		1,716,358		499,215		(145,319)		2,071,148
Equity:
Total stockholders’ equity	1,680,783		1,688,950		3,030,097		(4,719,047)		1,680,783
Total liabilities and stockholders’ equity	$	1,681,677	$	3,405,308	$	3,529,312	$	(4,864,366)	$	3,751,931

Condensed Consolidating Balance Sheets
As of December 31, 2018
(in thousands)	Piedmont (Parent) (Guarantor)		Piedmont OP (the Issuer)		Non-Guarantors		Eliminations		Consolidated
Assets:
Real estate assets, at cost:
Land	$	—	$	36,094	$	434,338	$	—	$	470,432
Buildings and improvements, less accumulated depreciation	—		176,927		1,944,943		(300)		2,121,570
Intangible lease assets, less accumulated amortization	—		—		77,676		—		77,676
Construction in progress	—		5,708		10,140		—		15,848
Real estate assets held for sale, net	—		—		331,068		—		331,068
Total real estate assets	—		218,729		2,798,165		(300)		3,016,594
Cash and cash equivalents	150		—		4,939		(518)		4,571
Tenant and straight-line rent receivables	—		16,143		131,419		—		147,562
Investment in subsidiaries	1,744,122		2,704,337		166		(4,448,625)		—
Notes receivable	—		810		144,500		(145,310)		—
Prepaid expenses, restricted cash, escrows, interest rate swaps, and other assets	42		5,682		21,653		(24)		27,353
Goodwill	—		98,918		—		—		98,918
Deferred lease costs, net	—		15,158		221,040		—		236,198
Other assets held for sale, net	—		—		61,233		—		61,233
Total assets	$	1,744,314	$	3,059,777	$	3,383,115	$	(4,594,777)	$	3,592,429
Liabilities:
Debt, net	$	—	$	1,495,065	$	335,717	$	(145,310)	$	1,685,472
Accounts payable, accrued expenses, dividends payable, interest rate swaps and accrued capital expenditures	32,174		15,382		74,536		(542)		121,550
Deferred income	—		2,274		26,505		—		28,779
Intangible lease liabilities, net	—		—		35,708		—		35,708
Liabilities held for sale	—		—		8,780		—		8,780
Total liabilities	32,174		1,512,721		481,246		(145,852)		1,880,289
Equity:
Total stockholders’ equity	1,712,140		1,547,056		2,901,869		(4,448,925)		1,712,140
Total liabilities and stockholders’ equity	$	1,744,314	$	3,059,777	$	3,383,115	$	(4,594,777)	$	3,592,429

Guarantor and Non-Guarantor Financial Information

Consolidating Statements of Income
For the Three Months Ended September 30, 2019
(in thousands)	Piedmont (Parent) (Guarantor)		Piedmont OP (the Issuer)		Non-Guarantors		Eliminations		Consolidated
Revenues:
Rental and tenant reimbursement revenue	$	—	$	11,940	$	119,385	$	(746)	$	130,579
Property management fee revenue	—		—		4,622		(4,217)		405
Other property related income	—		40		4,397		—		4,437
	—		11,980		128,404		(4,963)		135,421
Expenses:
Property operating costs	36		5,507		54,033		(4,963)		54,613
Depreciation	—		3,062		24,069		—		27,131
Amortization	—		486		19,019		—		19,505
Impairment loss on real estate assets	—		—		1,953		—		1,953
General and administrative	(30)		1,547		6,433		—		7,950
	6		10,602		105,507		(4,963)		111,152
Other income (expense):
Interest expense	—		(14,429)		(3,610)		1,894		(16,145)
Other income/(expense)	—		16		2,141		(1,894)		263
Gain on sale of real estate assets	—		—		32		—		32
Income/(loss) before consolidated subsidiaries	(6)		(13,035)		21,460		—		8,419
Income from subsidiaries	8,428		22,929		—		(31,357)		—
Net income	8,422		9,894		21,460		(31,357)		8,419
Plus: Net loss applicable to noncontrolling interest	—		—		3		—		3
Net income applicable to Piedmont	$	8,422	$	9,894	$	21,463	$	(31,357)	$	8,422

Consolidating Statements of Income
For the Three Months Ended September 30, 2018
(in thousands)	Piedmont (Parent) (Guarantor)		Piedmont OP (the Issuer)		Non-Guarantors		Eliminations		Consolidated
Revenues:
Rental and tenant reimbursement revenue	$	—	$	10,861	$	114,351	$	(694)	$	124,518
Property management fee revenue	—		—		4,296		(3,928)		368
Other property related income	—		35		4,787		—		4,822
	—		10,896		123,434		(4,622)		129,708
Expenses:
Property operating costs	—		4,973		49,328		(4,622)		49,679
Depreciation	—		2,816		24,036		—		26,852
Amortization	—		446		14,394		—		14,840
General and administrative	42		1,424		5,211		—		6,677
	42		9,659		92,969		(4,622)		98,048
Other income (expense):
Interest expense	—		(14,119)		(3,624)		1,894		(15,849)
Other income/(expense)	—		40		2,157		(1,894)		303
	—		(14,079)		(1,467)		—		(15,546)
Income/(loss) before consolidated subsidiaries	(42)		(12,842)		28,998		—		16,114
Income from subsidiaries	16,156		26,787		—		(42,943)		—
Net income	16,114		13,945		28,998		(42,943)		16,114
Plus: Net loss applicable to noncontrolling interest	—		—		—		—		—
Net income applicable to Piedmont	$	16,114	$	13,945	$	28,998	$	(42,943)	$	16,114

Guarantor and Non-Guarantor Financial Information

Consolidating Statements of Income
For the Nine Months Ended September 30, 2018
(in thousands)	Piedmont (Parent) (Guarantor)		Piedmont OP (the Issuer)		Non-Guarantors		Eliminations		Consolidated
Revenues:
Rental and tenant reimbursement revenue	$	—	$	33,754	$	340,539	$	(1,802)	$	372,491
Property management fee revenue	—		—		12,625		(11,566)		1,059
Other property related income	—		92		15,140		—		15,232
	—		33,846		368,304		(13,368)		388,782
Expenses:
Property operating costs	—		14,614		152,929		(13,368)		154,175
Depreciation	—		8,527		72,585		—		81,112
Amortization	—		1,520		45,298		—		46,818
General and administrative	228		4,849		16,410		—		21,487
	228		29,510		287,222		(13,368)		303,592
Other income (expense):
Interest expense	—		(40,093)		(10,937)		5,736		(45,294)
Other income/(expense)	—		200		7,016		(5,736)		1,480
Loss on extinguishment of debt	—		(1,680)		—		—		(1,680)
Gain on sale of real estate assets	—		1,417		43,769		—		45,186
	—		(40,156)		39,848		—		(308)
Income/(loss) before consolidated subsidiaries	(228)		(35,820)		120,930		—		84,882
Income from subsidiaries	85,114		119,013		—		(204,127)		—
Net income	84,886		83,193		120,930		(204,127)		84,882
Plus: Net loss applicable to noncontrolling interest	—		—		4		—		4
Net income applicable to Piedmont	$	84,886	$	83,193	$	120,934	$	(204,127)	$	84,886

Guarantor and Non-Guarantor Financial Information

Consolidating Statements of Comprehensive Income
For the Three Months Ended September 30, 2019
(in thousands)	Piedmont (Parent) (Guarantor)		Piedmont OP (the Issuer)		Non-Guarantors		Eliminations		Consolidated
Net income	$	8,422	$	9,894	$	21,463	$	(31,357)	$	8,422
Other comprehensive loss:
Effective portion of loss on derivative instruments that are designated and qualify as cash flow hedges	(1,386)		(1,386)		—		1,386		(1,386)
Less: Reclassification of net gain included in net income	(427)		(427)		—		427		(427)
Other comprehensive loss	(1,813)		(1,813)		—		1,813		(1,813)
Comprehensive income	$	6,609	$	8,081	$	21,463	$	(29,544)	$	6,609

Consolidating Statements of Comprehensive Income
For the Three Months Ended September 30, 2018
(in thousands)	Piedmont (Parent) (Guarantor)		Piedmont OP (the Issuer)		Non-Guarantors		Eliminations		Consolidated
Net income	$	16,114	$	13,945	$	28,998	$	(42,943)	$	16,114
Other comprehensive income:
Effective portion of gain on derivative instruments that are designated and qualify as cash flow hedges	1,144		1,144		—		(1,144)		1,144
Less: Reclassification of net gain included in net income	(434)		(434)		—		434		(434)
Other comprehensive income	710		710		—		(710)		710
Comprehensive income	$	16,824	$	14,655	$	28,998	$	(43,653)	$	16,824

Guarantor and Non-Guarantor Financial Information

Consolidating Statements of Comprehensive Income
For the Nine Months Ended September 30, 2019
(in thousands)	Piedmont (Parent) (Guarantor)		Piedmont OP (the Issuer)		Non-Guarantors		Eliminations		Consolidated
Net income	$	66,783	$	34,071	$	104,925	$	(138,996)	$	66,783
Other comprehensive loss:
Effective portion of loss on derivative instruments that are designated and qualify as cash flow hedges	(6,874)		(6,874)		—		6,874		(6,874)
Less: Reclassification of net gain included in net income	(1,871)		(1,871)		—		1,871		(1,871)
Other comprehensive loss	(8,745)		(8,745)		—		8,745		(8,745)
Comprehensive income	$	58,038	$	25,326	$	104,925	$	(130,251)	$	58,038

Consolidating Statements of Comprehensive Income
For the Nine Months Ended September 30, 2018
(in thousands)	Piedmont (Parent) (Guarantor)		Piedmont OP (the Issuer)		Non-Guarantors		Eliminations		Consolidated
Net income	$	84,886	$	83,193	$	120,934	$	(204,127)	$	84,886
Other comprehensive income:
Effective portion of gain on derivative instruments that are designated and qualify as cash flow hedges	4,408		4,408		—		(4,408)		4,408
Plus: Reclassification of net loss included in net income	373		373		—		(373)		373
Other comprehensive income	4,781		4,781		—		(4,781)		4,781
Comprehensive income	$	89,667	$	87,974	$	120,934	$	(208,908)	$	89,667

Guarantor and Non-Guarantor Financial Information

Condensed Consolidating Statements of Cash Flows
For the Nine Months Ended September 30, 2018
(in thousands)	Piedmont (Parent) (Guarantor)		Piedmont OP (the Issuer)		Non-Guarantors		Eliminations		Consolidated
Net Cash Provided by Operating Activities	$	89,540	$	89,639	$	164,063	$	(204,920)	$	138,322
Cash Flows from Investing Activities:
Investment in real estate assets and intangibles	—		(6,074)		(67,100)		—		(73,174)
Intercompany note receivable	—		88,000		—		(88,000)		—
Net sales proceeds from wholly-owned properties	—		36,572		382,982		—		419,554
Note receivable issuance	—		—		(3,200)		—		(3,200)
Deferred lease costs paid	—		(1,826)		(14,005)		—		(15,831)
Distributions from subsidiaries	362,784		64,633		—		(427,417)		—
Net cash provided by investing activities	362,784		181,305		298,677		(515,417)		327,349
Cash Flows from Financing Activities:
Debt issuance costs paid	—		(947)		—		—		(947)
Proceeds from debt	—		820,061		—		—		820,061
Repayments of debt	—		(832,000)		(1,005)		—		(833,005)
Intercompany note payable	—		—		(88,000)		88,000		—
Value of shares withheld to pay tax obligations related to employee stock compensation	(2,219)		—		—		—		(2,219)
Repurchases of common stock as part of announced plan	(266,062)		—		—		—		(266,062)
Distributions	(184,043)		(258,907)		(373,460)		632,337		(184,073)
Net cash used in financing activities	(452,324)		(271,793)		(462,465)		720,337		(466,245)
Net increase/(decrease) in cash, cash equivalents, and restricted cash and escrows	—		(849)		275		—		(574)
Cash, cash equivalents, and restricted cash and escrows, beginning of period	150		3,906		4,699		—		8,755
Cash, cash equivalents, and restricted cash and escrows, end of period	$	150	$	3,057	$	4,974	$	—	$	8,181

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Acquisitions (Tables)

9 Months Ended

Sep. 30, 2019

Property, Plant and Equipment [Abstract]

Schedule of Purchased Assets

During the nine months ended September 30, 2019, Piedmont acquired three properties and adjacent developable land using cash on hand and proceeds 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)
Galleria 100	Atlanta, Georgia	May 6, 2019	100	%	414,293	91	%	$	95.1
Galleria 400 and 600	Atlanta, Georgia	August 23, 2019	100	%	863,623	84	%	$	231.2

⁽¹⁾Price for both acquisitions includes the purchase of adjacent parcels of developable land, totaling approximately 11.7 acres.

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Stock Based Compensation (Rollforward of Stock Awards) (Details) - $ / shares	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Shares
Increase in estimated potential share award based on performance (in shares)			260,205
Unvested and potential stock awards, end of period (in shares)	1,034,373		1,034,373
Weighted-Average Grant Date Fair Value
Increase in estimated potential share award (in dollars per share)			$ 28.31
Stock Awards
Shares
Unvested and potential stock awards, beginning of period (in shares)			1,227,483
Unvested and potential stock awards, end of period (in shares)	1,034,373		1,034,373
Weighted-Average Grant Date Fair Value
Unvested and potential stock awards, beginning of period (in dollars per share)			$ 23.14
Unvested and potential stock awards, end of period (in dollars per share)	$ 25.10		$ 25.10
Deferred Stock Awards
Shares
Deferred stock awards granted (in shares)			354,057
Stock awards vested (in shares)			(440,450)
Deferred stock awards forfeited (in shares)			(14,518)
Weighted-Average Grant Date Fair Value
Deferred stock awards granted (in dollars per share)	$ 0	$ 0	$ 21.02	$ 17.84
Stock awards vested (in dollars per share)			19.66
Deferred stock awards forfeited (in dollars per share)			$ 19.16
Performance Share Awards
Shares
Stock awards vested (in shares)			(352,404)
Weighted-Average Grant Date Fair Value
Stock awards vested (in dollars per share)			$ 25.83

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Fair Value Measurement of Financial Instruments (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Interest rate swaps	$ 0	$ 1,199
Interest rate swaps	6,862	839
Carrying Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	10,284	4,571
Restricted cash and escrows	1,820	1,463
Accounts payable and accrued expenses	14,090	47,328
Debt, net	1,879,244	1,685,472
Tenant receivables, net | Carrying Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Tenant receivables, net	10,091	10,800
Level 1 | Estimated Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	10,284	4,571
Restricted cash and escrows	1,820	1,463
Accounts payable and accrued expenses	14,090	47,328
Level 1 | Tenant receivables, net | Estimated Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Tenant receivables, net	10,091	10,800
Level 2 | Estimated Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt, net	1,922,891	1,698,213
Interest rate swaps | Carrying Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Interest rate swaps	0	1,199
Interest rate swaps	6,862	839
Interest rate swaps | Level 2 | Estimated Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Interest rate swaps	0	1,199
Interest rate swaps	$ 6,862	$ 839

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Stock Based Compensation (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expense related to stock awards	$ 3.8	$ 1.7	$ 12.0	$ 6.7
Amortization of unvested shares			$ 10.5	$ 5.6
Total shares issued to employees, directors, and officers (in shares)			292,675
Unrecognized compensation cost related to nonvested	$ 4.5		$ 4.5
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

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Guarantor and Non-Guarantor Financial Information (Income) (Details) - USD ($) $ in Thousands	3 Months Ended						9 Months Ended		12 Months Ended
	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2017
Revenues:
Rental and tenant reimbursement revenue	$ 130,579		$ 504,400	$ 124,518			$ 382,213	$ 372,491	$ 553,300
Total revenues	135,421			129,708			399,025	388,782
Expenses:
Property operating costs	54,613			49,679			158,798	154,175
Depreciation	27,131			26,852			80,004	81,112
Amortization	19,505			14,840			55,666	46,818
Impairment loss on real estate assets	1,953			0			1,953	0
General and administrative	7,950			6,677			29,736	21,487
Operating expenses	111,152			98,048			326,157	303,592
Other income (expense):
Interest expense	(16,145)			(15,849)			(46,750)	(45,294)
Other income/(expense)	263			303			1,292	1,480
Loss on extinguishment of debt	0			0			0	(1,680)
Gain on sale of real estate assets	32			0			39,370	45,186
Nonoperating income (expense	(15,850)			(15,546)			(6,088)	(308)
Income/(loss) before consolidated subsidiaries	8,419			16,114			66,780	84,882
Income from subsidiaries	0			0			0	0
Net income	8,419			16,114			66,780	84,882
Net loss applicable to noncontrolling interest	3	$ 1	(1)	0	$ 2	$ 2	3	4
Net income applicable to Piedmont	8,422	$ 8,153	$ 50,208	16,114	$ 10,942	$ 57,830	66,783	84,886
Eliminations
Revenues:
Rental and tenant reimbursement revenue	(746)			(694)			(2,150)	(1,802)
Total revenues	(4,963)			(4,622)			(14,292)	(13,368)
Expenses:
Property operating costs	(4,963)			(4,622)			(14,292)	(13,368)
Depreciation	0			0			0	0
Amortization	0			0			0	0
Impairment loss on real estate assets	0						0
General and administrative	0			0			0	0
Operating expenses	(4,963)			(4,622)			(14,292)	(13,368)
Other income (expense):
Interest expense	1,894			1,894			5,641	5,736
Other income/(expense)	(1,894)			(1,894)			(5,641)	(5,736)
Loss on extinguishment of debt								0
Gain on sale of real estate assets	0						0	0
Nonoperating income (expense				0			0	0
Income/(loss) before consolidated subsidiaries	0			0			0	0
Income from subsidiaries	(31,357)			(42,943)			(138,996)	(204,127)
Net income	(31,357)			(42,943)			(138,996)	(204,127)
Net loss applicable to noncontrolling interest	0			0			0	0
Net income applicable to Piedmont	(31,357)			(42,943)			(138,996)	(204,127)
Piedmont (Parent) (Guarantor) | Reportable Legal Entities
Revenues:
Rental and tenant reimbursement revenue	0			0			0	0
Total revenues	0			0			0	0
Expenses:
Property operating costs	36			0			36	0
Depreciation	0			0			0	0
Amortization	0			0			0	0
Impairment loss on real estate assets	0						0
General and administrative	(30)			42			165	228
Operating expenses	6			42			201	228
Other income (expense):
Interest expense	0			0			0	0
Other income/(expense)	0			0			0	0
Loss on extinguishment of debt								0
Gain on sale of real estate assets	0						0	0
Nonoperating income (expense				0			0	0
Income/(loss) before consolidated subsidiaries	(6)			(42)			(201)	(228)
Income from subsidiaries	8,428			16,156			66,984	85,114
Net income	8,422			16,114			66,783	84,886
Net loss applicable to noncontrolling interest	0			0			0	0
Net income applicable to Piedmont	8,422			16,114			66,783	84,886
Piedmont OP (the Issuer) | Reportable Legal Entities
Revenues:
Rental and tenant reimbursement revenue	11,940			10,861			34,477	33,754
Total revenues	11,980			10,896			34,594	33,846
Expenses:
Property operating costs	5,507			4,973			15,848	14,614
Depreciation	3,062			2,816			9,041	8,527
Amortization	486			446			1,435	1,520
Impairment loss on real estate assets	0						0
General and administrative	1,547			1,424			4,874	4,849
Operating expenses	10,602			9,659			31,198	29,510
Other income (expense):
Interest expense	(14,429)			(14,119)			(41,590)	(40,093)
Other income/(expense)	16			40			125	200
Loss on extinguishment of debt								(1,680)
Gain on sale of real estate assets	0						128	1,417
Nonoperating income (expense				(14,079)			(41,337)	(40,156)
Income/(loss) before consolidated subsidiaries	(13,035)			(12,842)			(37,941)	(35,820)
Income from subsidiaries	22,929			26,787			72,012	119,013
Net income	9,894			13,945			34,071	83,193
Net loss applicable to noncontrolling interest	0			0			0	0
Net income applicable to Piedmont	9,894			13,945			34,071	83,193
Non-Guarantors | Reportable Legal Entities
Revenues:
Rental and tenant reimbursement revenue	119,385			114,351			349,886	340,539
Total revenues	128,404			123,434			378,723	368,304
Expenses:
Property operating costs	54,033			49,328			157,206	152,929
Depreciation	24,069			24,036			70,963	72,585
Amortization	19,019			14,394			54,231	45,298
Impairment loss on real estate assets	1,953						1,953
General and administrative	6,433			5,211			24,697	16,410
Operating expenses	105,507			92,969			309,050	287,222
Other income (expense):
Interest expense	(3,610)			(3,624)			(10,801)	(10,937)
Other income/(expense)	2,141			2,157			6,808	7,016
Loss on extinguishment of debt								0
Gain on sale of real estate assets	32						39,242	43,769
Nonoperating income (expense				(1,467)			35,249	39,848
Income/(loss) before consolidated subsidiaries	21,460			28,998			104,922	120,930
Income from subsidiaries	0			0			0	0
Net income	21,460			28,998			104,922	120,930
Net loss applicable to noncontrolling interest	3			0			3	4
Net income applicable to Piedmont	21,463			28,998			104,925	120,934
Property management fee revenue
Revenues:
Property management and other property related revenue	405			368			2,819	1,059
Property management fee revenue | Eliminations
Revenues:
Property management and other property related revenue	(4,217)			(3,928)			(12,142)	(11,566)
Property management fee revenue | Piedmont (Parent) (Guarantor) | Reportable Legal Entities
Revenues:
Property management and other property related revenue	0			0			0	0
Property management fee revenue | Piedmont OP (the Issuer) | Reportable Legal Entities
Revenues:
Property management and other property related revenue	0			0			0	0
Property management fee revenue | Non-Guarantors | Reportable Legal Entities
Revenues:
Property management and other property related revenue	4,622			4,296			14,961	12,625
Other property related income
Revenues:
Property management and other property related revenue	4,437			4,822			13,993	15,232
Other property related income | Eliminations
Revenues:
Property management and other property related revenue	0			0			0	0
Other property related income | Piedmont (Parent) (Guarantor) | Reportable Legal Entities
Revenues:
Property management and other property related revenue	0			0			0	0
Other property related income | Piedmont OP (the Issuer) | Reportable Legal Entities
Revenues:
Property management and other property related revenue	40			35			117	92
Other property related income | Non-Guarantors | Reportable Legal Entities
Revenues:
Property management and other property related revenue	$ 4,397			$ 4,787			$ 13,876	$ 15,140

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Organization (Details) ft² in Thousands	9 Months Ended
	Sep. 30, 2019 ft² property asset subsidiary segment market
Real Estate Properties [Line Items]
Number of wholly-owned subsidiaries | subsidiary	2
Percentage ownership by sole general partner	99.90%
Percentage ownership by sole limited partner	0.10%
Number of redevelopment assets | asset	1
Number of operating segments | segment	1
U.S.
Real Estate Properties [Line Items]
Number of major U.S. office markets | market	7
In Service Office Properties
Real Estate Properties [Line Items]
Number of real estate properties | property	55
Area of real estate property (in sq ft)	17,000
Percentage leased	91.90%
Redevelopment Asset
Real Estate Properties [Line Items]
Area of real estate property (in sq ft)	487

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Stock Based Compensation (Tables)

9 Months Ended

Sep. 30, 2019

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

Schedule of Nonvested Share Activity

A rollforward of Piedmont's equity based award activity for the nine months ended September 30, 2019 is as follows:

	Shares		Weighted-Average Grant Date Fair Value
Unvested and Potential Stock Awards as of December 31, 2018	1,227,483		$	23.14
Deferred Stock Awards Granted	354,057		$	21.02
Increase in Estimated Potential Share Award based on Performance	260,205		$	28.31
Performance Stock Awards Vested	(352,404)	(1)	$	25.83
Deferred Stock Awards Vested	(440,450)	(1)	$	19.66
Deferred Stock Awards Forfeited	(14,518)		$	19.16
Unvested and Potential Stock Awards as of September 30, 2019	1,034,373		$	25.10

⁽¹⁾Includes performance share and deferred stock awards that were settled in cash in July 2019 in conjunction with the senior management transition that occurred on June 30, 2019.

The following table provides additional information regarding stock award activity during the three and nine months ended September 30, 2019 and 2018, respectively (in thousands, except per share amounts):

	Three Months Ended				Nine Months Ended
	September 30, 2019		September 30, 2018		September 30, 2019		September 30, 2018
Weighted-Average Grant Date Fair Value of Deferred Stock Granted During the Period	$	—	$	—	$	21.02	$	17.84
Total Grant Date Fair Value of Deferred Stock Vested During the Period	$	—	$	16	$	8,658	$	6,378
Share-based Liability Awards Paid During the Period (1)	$	3,444	$	—	$	6,683	$	2,947

⁽¹⁾Amounts reflect the issuance of performance share awards related to the 2016-18 and 2015-17 Performance Share Plans during the nine months ended September 30, 2019 and 2018, 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, 2019 is as follows:

Date of grant	Type of Award	Net Shares Granted (1)	Grant Date Fair Value		Vesting Schedule	Unvested Shares
May 18, 2017	Deferred Stock Award	196,036	$	21.38	Of the shares granted, 25% vested on the date of grant, and 25% vested or will vest on May 18, 2018, 2019, and 2020, respectively.	40,942
May 18, 2017	Fiscal Year 2017-2019 Performance Share Program	—	$	30.45	Shares awarded, if any, will vest immediately upon determination of award in 2020.	153,368	(2)
May 17, 2018	Deferred Stock Award	271,169	$	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.	108,255
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 15, 2019	Deferred Stock Award-Board of Directors	25,974	$	20.79	Of the shares granted, 100% will vest by May 15, 2020.	25,974
May 3, 2019	Deferred Stock Award	300,825	$	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.	195,119
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.	310,041	(2)
Total						1,034,373

⁽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, 2019.

⁽²⁾Estimated based on Piedmont's cumulative TSR for the respective performance period through September 30, 2019. 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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Acquisitions (Details)	Aug. 23, 2019 USD ($) ft²	May 06, 2019 USD ($) ft²	Sep. 30, 2019 USD ($) a property
Property, Plant and Equipment [Line Items]
Number of properties acquired | property			3
Area of land acquired (in acres) | a			11.7
$500 Million Unsecured 2018 Line of Credit | Unsecured Debt
Property, Plant and Equipment [Line Items]
Face amount of debt instrument			$ 500,000,000
Galleria 100
Property, Plant and Equipment [Line Items]
Ownership percentage acquired		100.00%
Rentable square feet (in sq ft) | ft²		414,293
Percentage leased		91.00%
Net contractual purchase price		$ 95,100,000
Galleria 400 and 600
Property, Plant and Equipment [Line Items]
Ownership percentage acquired	100.00%
Rentable square feet (in sq ft) | ft²	863,623
Percentage leased	84.00%
Net contractual purchase price	$ 231,200,000

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Debt

9 Months Ended

Sep. 30, 2019

Debt Disclosure [Abstract]

Debt

Debt

The following table summarizes the terms of Piedmont’s indebtedness outstanding as of September 30, 2019 and December 31, 2018 (in thousands):

Facility (1)	Stated Rate		Effective Rate (2)			Maturity		Amount Outstanding as of
								September 30, 2019		December 31, 2018
Secured (Fixed)
$35 Million Fixed-Rate Loan (3)	5.55	%	3.75	%		9/1/2021		$	29,033	$	29,706
$160 Million Fixed-Rate Loan (4)	3.48	%	3.58	%		7/5/2022		160,000		160,000
Net premium and unamortized debt issuance costs								418		645
Subtotal/Weighted Average (5)	3.80	%						189,451		190,351
Unsecured (Variable and Fixed)
Amended and Restated $300 Million Unsecured 2011 Term Loan	LIBOR +  1.00%		3.20	%	(7)	11/30/2021		300,000		300,000
$500 Million Unsecured 2018 Line of Credit (6)	LIBOR + 0.90%		2.95	%		9/30/2022	(8)	398,000		205,000
$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 + 1.60%		3.93	%	(9)	3/31/2025		250,000		250,000
Discounts and unamortized debt issuance costs								(8,207)		(9,879)
Subtotal/Weighted Average (5)	3.58	%						1,689,793		1,495,121
Total/Weighted Average (5)	3.61	%						$	1,879,244	$	1,685,472

⁽¹⁾Other than the $35 Million Fixed-Rate Loan, all of Piedmont’s outstanding debt as of September 30, 2019 and December 31, 2018 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⁾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, 2019.

⁽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⁾The facility has a stated variable rate; however, Piedmont has entered into interest rate swap agreements which effectively fix, exclusive of changes in Piedmont's credit rating, the rate to that shown as the effective rate through the maturity date of the interest rate swap agreements (see Note 5 for more detail).

⁽⁸⁾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.

⁽⁹⁾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, $150 million of the principal balance to 4.11% through March 29, 2020, and $100 million of the principal balance to 4.21% from March 30, 2020 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, 2019 (see Note 5 for more detail).

Piedmont made interest payments on all debt facilities, including interest rate swap cash settlements, of approximately $17.8 million and $18.0 million for the three months ended September 30, 2019 and 2018, respectively, and approximately $49.7

million and $48.7 million for the nine months ended September 30, 2019 and 2018, respectively. Also, Piedmont capitalized interest of approximately $0.5 million and $0.4 million for the three months ended September 30, 2019 and 2018, respectively, and approximately $1.6 million and $0.8 million for the nine months ended September 30, 2019 and 2018, respectively. As of September 30, 2019, 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, 2019.

XML

Cover - shares	9 Months Ended
	Sep. 30, 2019	Oct. 29, 2019
Cover page.
Document Type	10-Q
Document Transition Report	false
Document Quarterly Report	true
Document Period End Date	Sep. 30, 2019
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
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		125,783,408
Document Fiscal Year Focus	2019
Amendment Flag	false
Document Fiscal Period Focus	Q3
Current Fiscal Year End Date	--12-31
Entity Central Index Key	0001042776

XML

Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended						9 Months Ended
	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Sep. 30, 2019	Sep. 30, 2018
Statement of Comprehensive Income [Abstract]
Net income applicable to Piedmont	$ 8,422	$ 8,153	$ 50,208	$ 16,114	$ 10,942	$ 57,830	$ 66,783	$ 84,886
Other comprehensive income/(loss):
Effective portion of gain/(loss) on derivative instruments that are designated and qualify as cash flow hedges (See Note 5)	(1,386)			1,144			(6,874)	4,408
Plus/(less): Reclassification of net loss/(gain) included in net income (See Note 5)	(427)			(434)			(1,871)	373
Other comprehensive income/(loss)	(1,813)	$ (4,137)	$ (2,795)	710	$ 1,502	$ 2,569	(8,745)	4,781
Comprehensive income applicable to Piedmont	$ 6,609			$ 16,824			$ 58,038	$ 89,667

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Commitments and Contingencies

9 Months Ended

Sep. 30, 2019

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, 2019, Piedmont had no individually significant unrecorded tenant allowance commitments.

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. Piedmont recorded net recoveries of previously recognized reductions in rental and reimbursement revenues of $0.7 million related to tenant audits/disputes during the three and nine months ended September 30, 2019 and approximately $0.1 million and $0.5 million of reductions in rental and reimbursement revenues related to such tenant audits/disputes during the three and nine months ended September 30, 2018, respectively.

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Organization

9 Months Ended

Sep. 30, 2019

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 seven major office markets in the Eastern-half of the United States, 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, 2019, Piedmont owned 55 in-service office properties and one 487,000-square foot redevelopment asset primarily in select sub-markets located within seven major office markets: Atlanta, Boston, Dallas, Minneapolis, New York, Orlando, and Washington, D.C. As of September 30, 2019, Piedmont's 55 in-service office properties comprised approximately 17.0 million square feet of primarily Class A commercial office space and were 91.9% 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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Derivative Instruments (Tables)

9 Months Ended

Sep. 30, 2019

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, 2019 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	3	Amended and Restated $300 Million Unsecured 2011 Term Loan	$	300	11/22/2016	1/15/2020
Interest rate swaps	2	$250 Million Unsecured 2018 Term Loan	$	100	3/29/2018	3/31/2025
Interest rate swaps	1	$250 Million Unsecured 2018 Term Loan	$	50	3/29/2018	3/29/2020
Total			$	450

Schedule of Interest Rate Derivatives

A detail of Piedmont’s interest rate derivatives on a gross and net basis as of September 30, 2019 and December 31, 2018, respectively, is as follows (in thousands):

Interest rate swaps classified as:	September 30, 2019		December 31, 2018
Gross derivative assets	$	—	$	1,199
Gross derivative liabilities	(6,862)		(839)
Net derivative asset/(liability)	$	(6,862)	$	360

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

The gain/(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, 2019 and 2018, respectively, was as follows (in thousands):

	Three Months Ended				Nine Months Ended
Interest Rate Swaps in Cash Flow Hedging Relationships	September 30, 2019		September 30, 2018		September 30, 2019		September 30, 2018
Amount of gain/(loss) recognized in OCI	$	(1,386)	$	1,144	$	(6,874)	$	4,408
Amount of previously recorded gain reclassified from OCI into Interest Expense	$	427	$	434	$	1,871	$	885
Amount of loss recognized on derivatives reclassified from OCI into Loss on Extinguishment of Debt	$	—	$	—	$	—	$	(1,258)
Total amount of Interest Expense presented in the consolidated statements of income	$	(16,145)	$	(15,849)	$	(46,750)	$	(45,294)
Total amount of Loss on Extinguishment of Debt presented in the consolidated statements of income (1)	$	—	$	—	$	—	$	(1,680)

⁽¹⁾Includes the write-off of approximately $0.4 million of discounts and unamortized debt issuance costs associated with the repayment of debt.

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Supplemental Disclosures for the Statement of Consolidated Cash Flows

9 Months Ended

Sep. 30, 2019

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, 2019 and 2018, (in thousands) are outlined below:

	Nine Months Ended
	September 30, 2019		September 30, 2018
Accrued capital expenditures and deferred lease costs	$	29,828	$	21,784
Change in accrued dividends and discount on dividend reinvestments	$	(26,972)	$	(101,794)
Change in accrued share repurchases as part of an announced plan	$	(4,417)	$	(1,277)
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 statement of cash flows for the nine months ended September 30, 2019 and 2018, to the consolidated balance sheets for the respective period (in thousands):

	2019		2018
Cash and cash equivalents as of January 1, 2019 and 2018, respectively	$	4,571	$	7,382
Restricted cash and escrows as of January 1, 2019 and 2018, respectively	1,463		1,373
Cash, cash equivalents, and restricted cash and escrows, beginning of period, as presented in the accompanying consolidated statement of cash flows	$	6,034	$	8,755
Cash and cash equivalents as of September 30, 2019 and 2018, respectively	$	10,284	$	6,807
Restricted cash and escrows as of September 30, 2019 and 2018, respectively	1,820		1,374
Cash, cash equivalents, and restricted cash and escrows, end of period, as presented in the accompanying consolidated statement of cash flows	$	12,104	$	8,181

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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Summary of Significant Accounting Policies (Policies)

9 Months Ended

Sep. 30, 2019

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, 2018.

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. Actual results could 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.

Recent Accounting Pronouncements

Accounting Pronouncements Adopted during the Nine Months Ended September 30, 2019

Leases

During the nine months ended September 30, 2019, Piedmont adopted Accounting Standards Update ("ASU") No. 2016-02, Leases (Topic 842), as well as various associated updates and amendments, which together comprise the requirements for lease accounting under Accounting Standards Codification 842 ("ASC 842"). ASC 842 fundamentally changed the definition of a lease, as well as the accounting for operating leases, by requiring lessees to recognize a liability to make lease payments and a right-of-use asset representing the right to use the leased asset over the term of the lease. ASC 842 also prohibits the capitalization of internal direct salary costs associated with negotiating and executing leases. Accounting for leases by lessors is substantially unchanged from prior practice as lessors continue to recognize lease revenue on a straight-line basis.

In conjunction with the adoption of ASC 842, Piedmont adopted the following optional practical expedients, transition amendments, or made accounting policy elections as follows:

•a package of optional practical expedients which precluded: (1) the reassessment of any expired or existing contracts to determine if they contain a lease or to determine lease classification; and (2) the write-off of any unamortized, previously capitalized, initial direct costs for any existing leases;

•an optional practical transition expedient provided by ASU No. 2018-01 which allowed Piedmont to exclude certain land easements in place as of January 1, 2019 from the new guidance;

•an optional practical expedient provided by ASU No. 2018-11 which allows certain non-lease operating expense reimbursements which are included in the underlying stated lease rate to be accounted for as part of an operating lease where Piedmont is the lessor;

•a transitional amendment which allows for the presentation of comparative periods in the year of adoption under ASC 840 (the former leasing guidance), effectively allowing for an initial adoption of ASC 842 (the new leasing guidance) on January 1, 2019 (the "Comparatives Under ASC 840 Option");

•an accounting policy election allowed by ASC 842 related to a recognition and measurement exception for short-term leases (defined as leases which are 12 months or less in duration) where Piedmont is the lessee. Piedmont's short-term lease expense reasonably reflects its lease commitments under such leases; and

•an accounting policy election allowed by ASU No. 2018-20 which permits Piedmont to exclude sales and other similar taxes from analysis to ascertain whether they are Piedmont's primary obligation (as lessor), and instead exclude such costs from revenue and account for them as costs of the lessee.

The nature of Piedmont's change in accounting principle relates primarily to its accounting for operating leases where Piedmont is a lessee for office space, as prescribed by ASC 842. Due to the adoption of the practical expedients outlined above, Piedmont has not adjusted prior-period information retrospectively, and there is a negligible decrease in net income attributable to Piedmont as a result of accounting for leases where Piedmont is the lessee under ASC 842 as compared to prior operating lease accounting.

Operating leases where Piedmont is the lessee relate primarily to office space in buildings owned by third parties. Piedmont recorded a right to use asset and corresponding lease liability of approximately $0.2 million using Piedmont's incremental

borrowing rate as the lease discount rate. For the three and nine months ended September 30, 2019, Piedmont recognized approximately $18,000 and $55,000 of operating lease costs, respectively. As of September 30, 2019, the weighted-average lease term of Piedmont's right of use assets is two years, and the weighted-average discount rate is 3.35%.

Piedmont evaluates contracts at commencement to determine if the contract contains a lease. If a contract is determined to contain a lease, the lease is evaluated to determine whether it is an operating or a financing lease. All of Piedmont's leases where Piedmont is the lessor are for the lessee's use of space in Piedmont's commercial office properties and are classified as operating leases. Lease payments are typically comprised of both fixed base rental payments and separately billed variable lease payments for reimbursement of services performed by Piedmont for the tenant as prescribed by the lease. Fixed base rental payments, as well as any fixed portion of reimbursement income, are recognized on a straight-line basis over the lease term. Tenant reimbursements are recognized as revenue in the period that the related operating cost is incurred. The option to extend or terminate our leases is specific to each underlying tenant agreement; however, generally Piedmont's leases contain penalties for early terminations. None of Piedmont's leases convey the right for the lessee to purchase the underlying property; however, certain leases convey the right of first offer or first refusal on the potential sale of the underlying real estate to the lessee.

Piedmont's future minimum lease payments from lessees under non-cancelable operating leases where Piedmont is the lessor as of September 30, 2019 is presented below (in thousands):

Years ending December 31:
2019 (1)	$	98,831
2020	382,738
2021	373,740
2022	357,475
2023	323,709
Thereafter	1,433,272
Total	$	2,969,765

⁽¹⁾Reflects rental payments for the fiscal period October 1, 2019 through December 31, 2019.

As required under the Comparatives Under ASC 840 Option described above, Piedmont's future minimum rental income from lessees under non-cancelable operating leases where Piedmont is the lessor as of December 31, 2018 is also presented below (in thousands):

Years ending December 31:
2019	$	370,495
2020	352,541
2021	337,951
2022	324,960
2023	291,603
Thereafter	1,247,649
Total	$	2,925,199

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, 2019, respectively, as follows (in thousands):

	Three Months Ended		Nine Months Ended
	September 30, 2019		September 30, 2019
Fixed payments	$	105,207	$	311,503
Variable payments	25,372		70,710
Total Rental and Tenant Reimbursement Revenue	$	130,579	$	382,213

Additionally, ASU No. 2018-19 clarifies that operating lease receivables are within the scope of ASC 842; therefore, in accordance with ASC 842, effective January 1, 2019, Piedmont elected to evaluate the collectibility of its operating lease receivables on a tenant/lease-specific basis and began recognizing changes in the collectibility assessment of its operating lease receivables as a reduction of rental and tenant reimbursement revenue, rather than as a bad debt expense, a component of property operating costs. Consequently, during the three and nine months ended September 30, 2019, Piedmont recognized approximately $65,000 and $24,000 of uncollectible operating lease receivables as a decrease in rental and reimbursement revenue, respectively, and during the three and nine months ended September 30, 2018, Piedmont recognized approximately $0 and $84,000 of expense related to uncollectible operating lease receivables as additional property operating costs, respectively.

Stock Compensation to Non-employees

During the nine months ended September 30, 2019, Piedmont adopted ASU No. 2018-07, Stock Compensation (Topic 718), Improvements to Non-employee Share-Based Payment Accounting ("ASU 2018-07"). The provisions of ASU 2018-07 align accounting for stock based compensation for non-employees for goods and services with existing accounting for similar compensation for employees. ASU 2018-07 requires an entity to remeasure liability-classified awards that have not been settled by the date of adoption and equity-classified awards for which a measurement date has not been established through a cumulative-effect adjustment to retained earnings as of January 1, 2019. Piedmont's only awards affected by ASU 2018-07 are equity-classified award grants to its independent board of directors, which have been historically recognized in the same manner prescribed by the newly adopted standard. As such, there was no cumulative effect adjustment recognized upon adoption.

Reclassifications

Although Piedmont has adopted the transitional amendment under ASC 842 described above, Piedmont has combined the presentation of rental income and tenant reimbursements in the accompanying consolidated statements of income for the prior periods to conform to the current period financial presentation under presentation guidance detailed in Accounting Standards Codification 205 Presentation of Financial Statements. These amounts included the presentation of approximately $101.3 million of rental income, and $23.2 million of tenant reimbursements for the three months ended September 30, 2018 as rental and tenant reimbursement revenue of $124.5 million. For the nine months ended September 30, 2018, these amounts included the presentation of approximately $304.3 million of rental income, and $68.2 million of tenant reimbursements as rental and tenant reimbursement revenue of $372.5 million. Further, we intend to make a similar reclassification for the years ended December 31, 2018 and 2017 in our Form 10-K for the year ending December 31, 2019. We will present approximately $411.7 million of rental income and $92.7 million of tenant reimbursements for the year ended December 31, 2018 as rental and tenant reimbursement revenue of $504.4 million. We will present approximately $455.1 million of rental income and $98.2 million of tenant reimbursements for the year ended December 31, 2017 as rental and tenant reimbursement revenue of $553.3 million. Finally, the subtotal of Revenues less Expenses was removed within the accompanying consolidated statements of income for the three and nine months ended September 30, 2018 to correct the prior period presentation, and will also be removed from prior annual periods in subsequent filings.

Other Recent Accounting Pronouncements

The FASB has issued 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. Additionally, the provisions change the classification of credit losses related to available-for-sale securities to an allowance, rather than a direct reduction of the amortized cost of the securities. Further, the FASB has 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. Both ASU 2018-19 and the Credit Loss Amendments are effective in the first quarter of 2020, with early adoption permitted as of January 1, 2019. Piedmont is currently evaluating the potential impact of adoption; however, substantially all of Piedmont's receivables are operating lease receivables and as such, Piedmont does not anticipate any material impact to its consolidated financial statements as a result of adoption of the Credit Loss Amendments and ASU 2018-19.

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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Commitments and Contingencies (Details) - Collectibility of Tenant Reimbursements - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Loss Contingencies [Line Items]
Recovery of previously recognized loss contingencies	$ (0.7)		$ (0.7)
Reductions in reimbursement revenues		$ 0.1		$ 0.5

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Debt (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Debt Disclosure [Abstract]
Interest paid	$ 17.8	$ 18.0	$ 49.7	$ 48.7
Interest costs capitalized	$ 0.5	$ 0.4	$ 1.6	$ 0.8

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Stock Based Compensation (Outstanding Employee Stock Awards) (Details) - $ / shares	May 15, 2019	May 03, 2019	May 17, 2018	May 18, 2017	Sep. 30, 2019	Dec. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unvested shares (in shares)					1,034,373
Stock Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grant date fair value (in dollars per share)					$ 25.10	$ 23.14
Unvested shares (in shares)					1,034,373	1,227,483
Deferred Stock Awards | Deferred Stock Award, Granted May 18, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Net Shares Granted (in shares)				196,036
Grant date fair value (in dollars per share)				$ 21.38
Unvested shares (in shares)					40,942
Deferred Stock Awards | Deferred Stock Award, Granted May 18, 2017 | 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 18, 2017 | 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 18, 2017 | 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 18, 2017 | 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 17, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Net Shares Granted (in shares)			271,169
Grant date fair value (in dollars per share)			$ 17.84
Unvested shares (in shares)					108,255
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 15,2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Net Shares Granted (in shares)	25,974
Grant date fair value (in dollars per share)	$ 20.79
Unvested shares (in shares)					25,974
Deferred Stock Awards | Deferred Stock Award, Granted May 15,2019 | Board of Directors
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage	100.00%
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)		300,825
Grant date fair value (in dollars per share)		$ 21.04
Unvested shares (in shares)					195,119
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%
Performance Share Awards | Performance Share Program Award, Granted May 18, 2017
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)				$ 30.45
Unvested shares (in shares)					153,368
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)					310,041

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Earnings Per Share

9 Months Ended

Sep. 30, 2019

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, 2019 and 2018, Piedmont calculated and excluded 251 shares and zero anti-dilutive shares, respectively, and for the nine months ended September 30, 2019 and 2018, Piedmont calculated and excluded 54,372 and 125,941, anti-dilutive shares, 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, 2019 and 2018, respectively (in thousands):

	Three Months Ended		Nine Months Ended
	September 30, 2019	September 30, 2018	September 30, 2019	September 30, 2018
Weighted-average common shares – basic	125,783	128,371	125,684	130,837
Plus: Incremental weighted-average shares from time-vested deferred and performance stock awards	457	448	506	350
Weighted-average common shares – diluted	126,240	128,819	126,190	131,187

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Summary of Significant Accounting Policies (Tables)

9 Months Ended

Sep. 30, 2019

Accounting Policies [Abstract]

Schedule of Future Minimum Rent Income

Piedmont's future minimum lease payments from lessees under non-cancelable operating leases where Piedmont is the lessor as of September 30, 2019 is presented below (in thousands):

Years ending December 31:
2019 (1)	$	98,831
2020	382,738
2021	373,740
2022	357,475
2023	323,709
Thereafter	1,433,272
Total	$	2,969,765

⁽¹⁾Reflects rental payments for the fiscal period October 1, 2019 through December 31, 2019.

Schedule of Future Minimum Rental Income

As required under the Comparatives Under ASC 840 Option described above, Piedmont's future minimum rental income from lessees under non-cancelable operating leases where Piedmont is the lessor as of December 31, 2018 is also presented below (in thousands):

Years ending December 31:
2019	$	370,495
2020	352,541
2021	337,951
2022	324,960
2023	291,603
Thereafter	1,247,649
Total	$	2,925,199

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, 2019, respectively, as follows (in thousands):

	Three Months Ended		Nine Months Ended
	September 30, 2019		September 30, 2019
Fixed payments	$	105,207	$	311,503
Variable payments	25,372		70,710
Total Rental and Tenant Reimbursement Revenue	$	130,579	$	382,213

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Fair Value Measurement of Financial Instruments (Tables)

9 Months Ended

Sep. 30, 2019

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, 2019 and December 31, 2018, respectively (in thousands):

	September 30, 2019					December 31, 2018
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)	$	10,284	$	10,284	Level 1	$	4,571	$	4,571	Level 1
Tenant receivables (1)	$	10,091	$	10,091	Level 1	$	10,800	$	10,800	Level 1
Restricted cash and escrows (1)	$	1,820	$	1,820	Level 1	$	1,463	$	1,463	Level 1
Interest rate swaps	$	—	$	—	Level 2	$	1,199	$	1,199	Level 2
Liabilities:
Accounts payable and accrued expenses (1)	$	14,090	$	14,090	Level 1	$	47,328	$	47,328	Level 1
Interest rate swaps	$	6,862	$	6,862	Level 2	$	839	$	839	Level 2
Debt, net	$	1,879,244	$	1,922,891	Level 2	$	1,685,472	$	1,698,213	Level 2

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

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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, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Deferred Stock Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Deferred stock awards granted (in dollars per share)	$ 0	$ 0	$ 21.02	$ 17.84
Weighted-average grant date fair value of deferred stock granted during the period	$ 0	$ 16	$ 8,658	$ 6,378
Performance Share Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Liability Awards Paid During the Period	$ 3,444	$ 0	$ 6,683	$ 2,947

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Impairment Loss on Real Estate Assets (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Real Estate Properties [Line Items]
Impairment loss on real estate assets	$ 1,953	$ 0	$ 1,953	$ 0
The Dupree
Real Estate Properties [Line Items]
Fair value, based on net contract price	12,700		$ 12,700
Impairment loss on real estate assets	$ 2,000

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Debt (Schedule of Debt) (Details)	9 Months Ended
	Sep. 30, 2019 USD ($) extension	Dec. 31, 2018 USD ($)
Debt Instrument [Line Items]
Weighted average rate (percent)	3.61%
Amount outstanding	$ 1,879,244,000	$ 1,685,472,000
Interest rate swaps
Debt Instrument [Line Items]
Notional amount of interest rate swap agreements	450,000,000
Seven-Year Interest Rate Swap Agreement | Interest rate swaps
Debt Instrument [Line Items]
Notional amount of interest rate swap agreements	$ 100,000,000
Secured Debt
Debt Instrument [Line Items]
Weighted average rate (percent)	3.80%
Amount outstanding	$ 189,451,000	190,351,000
Discounts and unamortized debt issuance costs	$ (418,000)	(645,000)
Secured Debt | $35 Million Fixed-Rate Loan
Debt Instrument [Line Items]
Stated rate (percent)	5.55%
Effective interest rate (percent)	3.75%
Amount outstanding	$ 29,033,000	29,706,000
Face amount of debt instrument	$ 35,000,000	35,000,000
Secured Debt | $160 Million Fixed Rate Loan
Debt Instrument [Line Items]
Stated rate (percent)	3.48%
Effective interest rate (percent)	3.58%
Amount outstanding	$ 160,000,000	160,000,000
Face amount of debt instrument	$ 160,000,000
Unsecured Debt
Debt Instrument [Line Items]
Weighted average rate (percent)	3.58%
Amount outstanding	$ 1,689,793,000	1,495,121,000
Discounts and unamortized debt issuance costs	(8,207,000)	(9,879,000)
Unsecured Debt | Amended and Restated $300 Million Unsecured 2011 Term Loan
Debt Instrument [Line Items]
Amount outstanding	300,000,000	300,000,000
Face amount of debt instrument	$ 300,000,000
Unsecured Debt | Amended and Restated $300 Million Unsecured 2011 Term Loan | Interest rate swaps
Debt Instrument [Line Items]
Effective interest rate (percent)	3.20%
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
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)	2.95%
Amount outstanding	$ 398,000,000	205,000,000
Maximum extension period (in years)	1 year
Number of extension periods | extension	2
Extension period (in months)	6 months
Unsecured Debt | $350 Million Unsecured Senior Notes
Debt Instrument [Line Items]
Stated rate (percent)	3.40%
Effective interest rate (percent)	3.43%
Amount outstanding	$ 350,000,000	350,000,000
Face amount of debt instrument	$ 350,000,000
Unsecured Debt | $400 Million Unsecured Senior Notes
Debt Instrument [Line Items]
Stated rate (percent)	4.45%
Effective interest rate (percent)	4.10%
Amount outstanding	$ 400,000,000	400,000,000
Face amount of debt instrument	$ 400,000,000
Unsecured Debt | $250 Million Unsecured 2018 Term Loan
Debt Instrument [Line Items]
Effective interest rate (percent)	3.93%
Amount outstanding	$ 250,000,000	$ 250,000,000
Face amount of debt instrument	250,000,000
Notional amount of interest rate swap agreements	$ 150,000,000
Unsecured Debt | $250 Million Unsecured 2018 Term Loan | London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Basis spread on variable rate (percent)	1.60%
Through March 29, 2020 | Unsecured Debt | $250 Million Unsecured 2018 Term Loan
Debt Instrument [Line Items]
Interest rate on derivative instrument	4.11%
From March 30, 2020 through March 31, 2025 | Unsecured Debt | $250 Million Unsecured 2018 Term Loan
Debt Instrument [Line Items]
Interest rate on derivative instrument	4.21%

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Supplemental Disclosures for the Statement of Consolidated Cash Flows (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018	Dec. 31, 2017
Supplemental Cash Flow Elements [Abstract]
Accrued capital expenditures and deferred lease costs	$ 29,828	$ 21,784
Change in accrued dividends and discount on dividend reinvestments	(26,972)	(101,794)
Change in accrued share repurchases as part of an announced plan	(4,417)	(1,277)
Accrued stock issuance costs	441	0
Cash and cash equivalents	10,284	6,807	$ 4,571	$ 7,382
Restricted cash and escrows	1,820	1,374	1,463	1,373
Total cash, cash equivalents, and restricted cash and escrows shown in the consolidated statement of cash flows	$ 12,104	$ 8,181	$ 6,034	$ 8,755

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Guarantor and Non-Guarantor Financial Information (Comprehensive Income) (Details) - USD ($) $ in Thousands	3 Months Ended						9 Months Ended
	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Sep. 30, 2019	Sep. 30, 2018
Condensed Financial Statements, Captions [Line Items]
Net income applicable to Piedmont	$ 8,422	$ 8,153	$ 50,208	$ 16,114	$ 10,942	$ 57,830	$ 66,783	$ 84,886
Effective portion of gain/(loss) on derivative instruments that are designated and qualify as cash flow hedges (See Note 5)	(1,386)			1,144			(6,874)	4,408
Plus: Reclassification of gain included in net income	(427)			(434)			(1,871)	373
Other comprehensive income/(loss)	(1,813)	$ (4,137)	$ (2,795)	710	$ 1,502	$ 2,569	(8,745)	4,781
Comprehensive income applicable to Piedmont	6,609			16,824			58,038	89,667
Reportable Legal Entities | Piedmont (Parent) (Guarantor)
Condensed Financial Statements, Captions [Line Items]
Net income applicable to Piedmont	8,422			16,114			66,783	84,886
Effective portion of gain/(loss) on derivative instruments that are designated and qualify as cash flow hedges (See Note 5)	(1,386)			1,144			(6,874)	4,408
Plus: Reclassification of gain included in net income	(427)			(434)			(1,871)	373
Other comprehensive income/(loss)	(1,813)			710			(8,745)	4,781
Comprehensive income applicable to Piedmont	6,609			16,824			58,038	89,667
Reportable Legal Entities | Piedmont OP (the Issuer)
Condensed Financial Statements, Captions [Line Items]
Net income applicable to Piedmont	9,894			13,945			34,071	83,193
Effective portion of gain/(loss) on derivative instruments that are designated and qualify as cash flow hedges (See Note 5)	(1,386)			1,144			(6,874)	4,408
Plus: Reclassification of gain included in net income	(427)			(434)			(1,871)	373
Other comprehensive income/(loss)	(1,813)			710			(8,745)	4,781
Comprehensive income applicable to Piedmont	8,081			14,655			25,326	87,974
Reportable Legal Entities | Non-Guarantors
Condensed Financial Statements, Captions [Line Items]
Net income applicable to Piedmont	21,463			28,998			104,925	120,934
Effective portion of gain/(loss) on derivative instruments that are designated and qualify as cash flow hedges (See Note 5)	0			0			0	0
Plus: Reclassification of gain included in net income	0			0			0	0
Other comprehensive income/(loss)	0			0			0	0
Comprehensive income applicable to Piedmont	21,463			28,998			104,925	120,934
Eliminations
Condensed Financial Statements, Captions [Line Items]
Net income applicable to Piedmont	(31,357)			(42,943)			(138,996)	(204,127)
Effective portion of gain/(loss) on derivative instruments that are designated and qualify as cash flow hedges (See Note 5)	1,386			(1,144)			6,874	(4,408)
Plus: Reclassification of gain included in net income	427			434			1,871	(373)
Other comprehensive income/(loss)	1,813			(710)			8,745	(4,781)
Comprehensive income applicable to Piedmont	$ (29,544)			$ (43,653)			$ (130,251)	$ (208,908)

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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		12 Months Ended
	Sep. 30, 2019	Mar. 31, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2017
Accounting Policies [Abstract]
Fixed payments	$ 105,207			$ 311,503
Variable payments	25,372			70,710
Total Rental and Tenant Reimbursement Revenue	$ 130,579	$ 504,400	$ 124,518	$ 382,213	$ 372,491	$ 553,300

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Guarantor and Non-Guarantor Financial Information (Tables)

9 Months Ended

Sep. 30, 2019

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Condensed Consolidating Balance Sheets

Condensed Consolidating Balance Sheets
As of September 30, 2019
(in thousands)	Piedmont (Parent) (Guarantor)		Piedmont OP (the Issuer)		Non-Guarantors		Eliminations		Consolidated
Assets:
Real estate assets, at cost:
Land	$	—	$	36,094	$	470,346	$	—	$	506,440
Buildings and improvements, less accumulated depreciation	—		186,269		2,141,086		(300)		2,327,055
Intangible lease assets, less accumulated amortization	—		—		88,371		—		88,371
Construction in progress	—		1,058		12,808		—		13,866
Real estate assets held for sale, net	—		—		213,094		—		213,094
Total real estate assets	—		223,421		2,925,705		(300)		3,148,826
Cash and cash equivalents	150		5,758		4,376		—		10,284
Tenant and straight-line rent receivables	—		16,514		140,774		—		157,288
Investment in subsidiaries	1,681,492		3,037,093		162		(4,718,747)		—
Notes receivable	—		810		144,500		(145,310)		—
Prepaid expenses, restricted cash, escrows, interest rate swaps, and other assets	35		6,227		22,710		(9)		28,963
Goodwill	—		98,918		—		—		98,918
Deferred lease costs, net	—		16,567		251,049		—		267,616
Other assets held for sale, net			—		40,036		—		40,036
Total assets	$	1,681,677	$	3,405,308	$	3,529,312	$	(4,864,366)	$	3,751,931
Liabilities:
Debt, net	$	—	$	1,689,749	$	334,805	$	(145,310)	$	1,879,244
Accounts payable, accrued expenses, and accrued capital expenditures	894		16,054		97,873		(9)		114,812
Deferred income	—		3,693		24,292		—		27,985
Intangible lease liabilities, net	—		—		34,970		—		34,970
Interest rate swaps	—		6,862		—		—		6,862
Liabilities held for sale	—		—		7,275		—		7,275
Total liabilities	894		1,716,358		499,215		(145,319)		2,071,148
Equity:
Total stockholders’ equity	1,680,783		1,688,950		3,030,097		(4,719,047)		1,680,783
Total liabilities and stockholders’ equity	$	1,681,677	$	3,405,308	$	3,529,312	$	(4,864,366)	$	3,751,931

Condensed Consolidating Balance Sheets
As of December 31, 2018
(in thousands)	Piedmont (Parent) (Guarantor)		Piedmont OP (the Issuer)		Non-Guarantors		Eliminations		Consolidated
Assets:
Real estate assets, at cost:
Land	$	—	$	36,094	$	434,338	$	—	$	470,432
Buildings and improvements, less accumulated depreciation	—		176,927		1,944,943		(300)		2,121,570
Intangible lease assets, less accumulated amortization	—		—		77,676		—		77,676
Construction in progress	—		5,708		10,140		—		15,848
Real estate assets held for sale, net	—		—		331,068		—		331,068
Total real estate assets	—		218,729		2,798,165		(300)		3,016,594
Cash and cash equivalents	150		—		4,939		(518)		4,571
Tenant and straight-line rent receivables	—		16,143		131,419		—		147,562
Investment in subsidiaries	1,744,122		2,704,337		166		(4,448,625)		—
Notes receivable	—		810		144,500		(145,310)		—
Prepaid expenses, restricted cash, escrows, interest rate swaps, and other assets	42		5,682		21,653		(24)		27,353
Goodwill	—		98,918		—		—		98,918
Deferred lease costs, net	—		15,158		221,040		—		236,198
Other assets held for sale, net	—		—		61,233		—		61,233
Total assets	$	1,744,314	$	3,059,777	$	3,383,115	$	(4,594,777)	$	3,592,429
Liabilities:
Debt, net	$	—	$	1,495,065	$	335,717	$	(145,310)	$	1,685,472
Accounts payable, accrued expenses, dividends payable, interest rate swaps and accrued capital expenditures	32,174		15,382		74,536		(542)		121,550
Deferred income	—		2,274		26,505		—		28,779
Intangible lease liabilities, net	—		—		35,708		—		35,708
Liabilities held for sale	—		—		8,780		—		8,780
Total liabilities	32,174		1,512,721		481,246		(145,852)		1,880,289
Equity:
Total stockholders’ equity	1,712,140		1,547,056		2,901,869		(4,448,925)		1,712,140
Total liabilities and stockholders’ equity	$	1,744,314	$	3,059,777	$	3,383,115	$	(4,594,777)	$	3,592,429

Consolidating Statements of Income

Consolidating Statements of Income
For the Three Months Ended September 30, 2019
(in thousands)	Piedmont (Parent) (Guarantor)		Piedmont OP (the Issuer)		Non-Guarantors		Eliminations		Consolidated
Revenues:
Rental and tenant reimbursement revenue	$	—	$	11,940	$	119,385	$	(746)	$	130,579
Property management fee revenue	—		—		4,622		(4,217)		405
Other property related income	—		40		4,397		—		4,437
	—		11,980		128,404		(4,963)		135,421
Expenses:
Property operating costs	36		5,507		54,033		(4,963)		54,613
Depreciation	—		3,062		24,069		—		27,131
Amortization	—		486		19,019		—		19,505
Impairment loss on real estate assets	—		—		1,953		—		1,953
General and administrative	(30)		1,547		6,433		—		7,950
	6		10,602		105,507		(4,963)		111,152
Other income (expense):
Interest expense	—		(14,429)		(3,610)		1,894		(16,145)
Other income/(expense)	—		16		2,141		(1,894)		263
Gain on sale of real estate assets	—		—		32		—		32
Income/(loss) before consolidated subsidiaries	(6)		(13,035)		21,460		—		8,419
Income from subsidiaries	8,428		22,929		—		(31,357)		—
Net income	8,422		9,894		21,460		(31,357)		8,419
Plus: Net loss applicable to noncontrolling interest	—		—		3		—		3
Net income applicable to Piedmont	$	8,422	$	9,894	$	21,463	$	(31,357)	$	8,422

Consolidating Statements of Income

Consolidating Statements of Income
For the Three Months Ended September 30, 2018
(in thousands)	Piedmont (Parent) (Guarantor)		Piedmont OP (the Issuer)		Non-Guarantors		Eliminations		Consolidated
Revenues:
Rental and tenant reimbursement revenue	$	—	$	10,861	$	114,351	$	(694)	$	124,518
Property management fee revenue	—		—		4,296		(3,928)		368
Other property related income	—		35		4,787		—		4,822
	—		10,896		123,434		(4,622)		129,708
Expenses:
Property operating costs	—		4,973		49,328		(4,622)		49,679
Depreciation	—		2,816		24,036		—		26,852
Amortization	—		446		14,394		—		14,840
General and administrative	42		1,424		5,211		—		6,677
	42		9,659		92,969		(4,622)		98,048
Other income (expense):
Interest expense	—		(14,119)		(3,624)		1,894		(15,849)
Other income/(expense)	—		40		2,157		(1,894)		303
	—		(14,079)		(1,467)		—		(15,546)
Income/(loss) before consolidated subsidiaries	(42)		(12,842)		28,998		—		16,114
Income from subsidiaries	16,156		26,787		—		(42,943)		—
Net income	16,114		13,945		28,998		(42,943)		16,114
Plus: Net loss applicable to noncontrolling interest	—		—		—		—		—
Net income applicable to Piedmont	$	16,114	$	13,945	$	28,998	$	(42,943)	$	16,114

Consolidating Statements of Income

Consolidating Statements of Income
For the Nine Months Ended September 30, 2019
(in thousands)	Piedmont (Parent) (Guarantor)		Piedmont OP (the Issuer)		Non-Guarantors		Eliminations		Consolidated
Revenues:
Rental and tenant reimbursement revenue	$	—	$	34,477	$	349,886	$	(2,150)	$	382,213
Property management fee revenue	—		—		14,961		(12,142)		2,819
Other property related income	—		117		13,876		—		13,993
	—		34,594		378,723		(14,292)		399,025
Expenses:
Property operating costs	36		15,848		157,206		(14,292)		158,798
Depreciation	—		9,041		70,963		—		80,004
Amortization	—		1,435		54,231		—		55,666
Impairment loss on real estate assets	—		—		1,953		—		1,953
General and administrative	165		4,874		24,697		—		29,736
	201		31,198		309,050		(14,292)		326,157
Other income (expense):
Interest expense	—		(41,590)		(10,801)		5,641		(46,750)
Other income/(expense)	—		125		6,808		(5,641)		1,292
Gain on sale of real estate assets	—		128		39,242		—		39,370
	—		(41,337)		35,249		—		(6,088)
Income/(loss) before consolidated subsidiaries	(201)		(37,941)		104,922		—		66,780
Income from subsidiaries	66,984		72,012		—		(138,996)		—
Net income	66,783		34,071		104,922		(138,996)		66,780
Plus: Net loss applicable to noncontrolling interest	—		—		3		—		3
Net income applicable to Piedmont	$	66,783	$	34,071	$	104,925	$	(138,996)	$	66,783

Consolidating Statements of Income
For the Nine Months Ended September 30, 2018
(in thousands)	Piedmont (Parent) (Guarantor)		Piedmont OP (the Issuer)		Non-Guarantors		Eliminations		Consolidated
Revenues:
Rental and tenant reimbursement revenue	$	—	$	33,754	$	340,539	$	(1,802)	$	372,491
Property management fee revenue	—		—		12,625		(11,566)		1,059
Other property related income	—		92		15,140		—		15,232
	—		33,846		368,304		(13,368)		388,782
Expenses:
Property operating costs	—		14,614		152,929		(13,368)		154,175
Depreciation	—		8,527		72,585		—		81,112
Amortization	—		1,520		45,298		—		46,818
General and administrative	228		4,849		16,410		—		21,487
	228		29,510		287,222		(13,368)		303,592
Other income (expense):
Interest expense	—		(40,093)		(10,937)		5,736		(45,294)
Other income/(expense)	—		200		7,016		(5,736)		1,480
Loss on extinguishment of debt	—		(1,680)		—		—		(1,680)
Gain on sale of real estate assets	—		1,417		43,769		—		45,186
	—		(40,156)		39,848		—		(308)
Income/(loss) before consolidated subsidiaries	(228)		(35,820)		120,930		—		84,882
Income from subsidiaries	85,114		119,013		—		(204,127)		—
Net income	84,886		83,193		120,930		(204,127)		84,882
Plus: Net loss applicable to noncontrolling interest	—		—		4		—		4
Net income applicable to Piedmont	$	84,886	$	83,193	$	120,934	$	(204,127)	$	84,886

Consolidating Statements of Comprehensive Income

Consolidating Statements of Comprehensive Income
For the Three Months Ended September 30, 2019
(in thousands)	Piedmont (Parent) (Guarantor)		Piedmont OP (the Issuer)		Non-Guarantors		Eliminations		Consolidated
Net income	$	8,422	$	9,894	$	21,463	$	(31,357)	$	8,422
Other comprehensive loss:
Effective portion of loss on derivative instruments that are designated and qualify as cash flow hedges	(1,386)		(1,386)		—		1,386		(1,386)
Less: Reclassification of net gain included in net income	(427)		(427)		—		427		(427)
Other comprehensive loss	(1,813)		(1,813)		—		1,813		(1,813)
Comprehensive income	$	6,609	$	8,081	$	21,463	$	(29,544)	$	6,609

Consolidating Statements of Comprehensive Income
For the Three Months Ended September 30, 2018
(in thousands)	Piedmont (Parent) (Guarantor)		Piedmont OP (the Issuer)		Non-Guarantors		Eliminations		Consolidated
Net income	$	16,114	$	13,945	$	28,998	$	(42,943)	$	16,114
Other comprehensive income:
Effective portion of gain on derivative instruments that are designated and qualify as cash flow hedges	1,144		1,144		—		(1,144)		1,144
Less: Reclassification of net gain included in net income	(434)		(434)		—		434		(434)
Other comprehensive income	710		710		—		(710)		710
Comprehensive income	$	16,824	$	14,655	$	28,998	$	(43,653)	$	16,824

Consolidating Statements of Comprehensive Income

Consolidating Statements of Comprehensive Income
For the Nine Months Ended September 30, 2019
(in thousands)	Piedmont (Parent) (Guarantor)		Piedmont OP (the Issuer)		Non-Guarantors		Eliminations		Consolidated
Net income	$	66,783	$	34,071	$	104,925	$	(138,996)	$	66,783
Other comprehensive loss:
Effective portion of loss on derivative instruments that are designated and qualify as cash flow hedges	(6,874)		(6,874)		—		6,874		(6,874)
Less: Reclassification of net gain included in net income	(1,871)		(1,871)		—		1,871		(1,871)
Other comprehensive loss	(8,745)		(8,745)		—		8,745		(8,745)
Comprehensive income	$	58,038	$	25,326	$	104,925	$	(130,251)	$	58,038

Consolidating Statements of Comprehensive Income
For the Nine Months Ended September 30, 2018
(in thousands)	Piedmont (Parent) (Guarantor)		Piedmont OP (the Issuer)		Non-Guarantors		Eliminations		Consolidated
Net income	$	84,886	$	83,193	$	120,934	$	(204,127)	$	84,886
Other comprehensive income:
Effective portion of gain on derivative instruments that are designated and qualify as cash flow hedges	4,408		4,408		—		(4,408)		4,408
Plus: Reclassification of net loss included in net income	373		373		—		(373)		373
Other comprehensive income	4,781		4,781		—		(4,781)		4,781
Comprehensive income	$	89,667	$	87,974	$	120,934	$	(208,908)	$	89,667

Condensed Consolidating Statements of Cash Flows

Condensed Consolidating Statements of Cash Flows
For the Nine Months Ended September 30, 2019
(in thousands)	Piedmont (Parent) (Guarantor)		Piedmont OP (the Issuer)		Non-Guarantors		Eliminations		Consolidated
Net Cash Provided by Operating Activities	$	72,694	$	43,676	$	182,344	$	(138,471)	$	160,243
Cash Flows from Investing Activities:
Investment in real estate assets and intangibles	—		(13,561)		(369,951)		—		(383,512)
Net sales proceeds from wholly-owned properties	—		128		180,847		—		180,975
Deferred lease costs paid	—		(1,210)		(15,422)		—		(16,632)
Distributions from subsidiaries	54,151		215,231		—		(269,382)		—
Net cash provided by/(used in) investing activities	54,151		200,588		(204,526)		(269,382)		(219,169)
Cash Flows from Financing Activities:
Debt issuance and other costs paid	—		(91)		—		—		(91)
Proceeds from debt	—		550,000		—		—		550,000
Repayments of debt	—		(357,000)		(1,041)		—		(358,041)
Costs of issuance of common stock	(259)		—		—		—		(259)
Value of shares withheld to pay tax obligations related to employee stock compensation	(3,295)		—		—		—		(3,295)
Repurchases of common stock as part of announced plan	(16,899)		—		—		—		(16,899)
Distributions	(106,392)		(431,416)		23,018		408,371		(106,419)
Net cash provided by/(used in) financing activities	(126,845)		(238,507)		21,977		408,371		64,996
Net increase/(decrease) in cash, cash equivalents, and restricted cash and escrows	—		5,757		(205)		518		6,070
Cash, cash equivalents, and restricted cash and escrows, beginning of period	150		32		6,370		(518)		6,034
Cash, cash equivalents, and restricted cash and escrows, end of period	$	150	$	5,789	$	6,165	$	—	$	12,104

Condensed Consolidating Statements of Cash Flows
For the Nine Months Ended September 30, 2018
(in thousands)	Piedmont (Parent) (Guarantor)		Piedmont OP (the Issuer)		Non-Guarantors		Eliminations		Consolidated
Net Cash Provided by Operating Activities	$	89,540	$	89,639	$	164,063	$	(204,920)	$	138,322
Cash Flows from Investing Activities:
Investment in real estate assets and intangibles	—		(6,074)		(67,100)		—		(73,174)
Intercompany note receivable	—		88,000		—		(88,000)		—
Net sales proceeds from wholly-owned properties	—		36,572		382,982		—		419,554
Note receivable issuance	—		—		(3,200)		—		(3,200)
Deferred lease costs paid	—		(1,826)		(14,005)		—		(15,831)
Distributions from subsidiaries	362,784		64,633		—		(427,417)		—
Net cash provided by investing activities	362,784		181,305		298,677		(515,417)		327,349
Cash Flows from Financing Activities:
Debt issuance costs paid	—		(947)		—		—		(947)
Proceeds from debt	—		820,061		—		—		820,061
Repayments of debt	—		(832,000)		(1,005)		—		(833,005)
Intercompany note payable	—		—		(88,000)		88,000		—
Value of shares withheld to pay tax obligations related to employee stock compensation	(2,219)		—		—		—		(2,219)
Repurchases of common stock as part of announced plan	(266,062)		—		—		—		(266,062)
Distributions	(184,043)		(258,907)		(373,460)		632,337		(184,073)
Net cash used in financing activities	(452,324)		(271,793)		(462,465)		720,337		(466,245)
Net increase/(decrease) in cash, cash equivalents, and restricted cash and escrows	—		(849)		275		—		(574)
Cash, cash equivalents, and restricted cash and escrows, beginning of period	150		3,906		4,699		—		8,755
Cash, cash equivalents, and restricted cash and escrows, end of period	$	150	$	3,057	$	4,974	$	—	$	8,181

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Assets Held for Sale (Tables)

9 Months Ended

Sep. 30, 2019

Discontinued Operations and Disposal Groups [Abstract]

Schedule of Assets Held for Sale

Details of assets held for sale as of September 30, 2019 and December 31, 2018 are presented below (in thousands):

	September 30, 2019		December 31, 2018
Real estate assets held for sale, net:
Land	$	36,990	$	67,552
Building and improvements, less accumulated depreciation of $61,579 and $102,476 as of September 30, 2019 and December 31, 2018, respectively	176,066		261,463
Construction in progress	38		2,053
Total real estate assets held for sale, net	$	213,094	$	331,068
Other assets held for sale, net:
Straight-line rent receivables	$	26,132	$	36,584
Prepaid expenses and other assets	452		1,095
Deferred lease costs, less accumulated amortization of $7,887 and $9,138 as of September 30, 2019 and December 31, 2018, respectively	13,452		23,554
Total other assets held for sale, net	$	40,036	$	61,233
Other liabilities held for sale:
Accrued expenses as of September 30, 2019 and December 31, 2018, respectively	$	7,275	$	8,780

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Consolidated Statement of Stockholders' Equity (Parenthetical) - $ / shares	3 Months Ended
	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018
Statement of Stockholders' Equity [Abstract]
Dividends to common stockholders per share (in dollars per share)	$ 0.21	$ 0.21	$ 0.21	$ 0.21	$ 0.21	$ 0.21

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Derivative Instruments

9 Months Ended

Sep. 30, 2019

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.

As of September 30, 2019, Piedmont was party to interest rate swap agreements, all of which are designated as effective cash flow hedges and fully hedge the variable cash flows covering the entire outstanding balance of the Amended and Restated $300 Million Unsecured 2011 Term Loan, and $150 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 66 months.

A detail of Piedmont’s interest rate derivatives outstanding as of September 30, 2019 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	3	Amended and Restated $300 Million Unsecured 2011 Term Loan	$	300	11/22/2016	1/15/2020
Interest rate swaps	2	$250 Million Unsecured 2018 Term Loan	$	100	3/29/2018	3/31/2025
Interest rate swaps	1	$250 Million Unsecured 2018 Term Loan	$	50	3/29/2018	3/29/2020
Total			$	450

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, 2019 and December 31, 2018, respectively, is as follows (in thousands):

Interest rate swaps classified as:	September 30, 2019		December 31, 2018
Gross derivative assets	$	—	$	1,199
Gross derivative liabilities	(6,862)		(839)
Net derivative asset/(liability)	$	(6,862)	$	360

The gain/(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, 2019 and 2018, respectively, was as follows (in thousands):

	Three Months Ended				Nine Months Ended
Interest Rate Swaps in Cash Flow Hedging Relationships	September 30, 2019		September 30, 2018		September 30, 2019		September 30, 2018
Amount of gain/(loss) recognized in OCI	$	(1,386)	$	1,144	$	(6,874)	$	4,408
Amount of previously recorded gain reclassified from OCI into Interest Expense	$	427	$	434	$	1,871	$	885
Amount of loss recognized on derivatives reclassified from OCI into Loss on Extinguishment of Debt	$	—	$	—	$	—	$	(1,258)
Total amount of Interest Expense presented in the consolidated statements of income	$	(16,145)	$	(15,849)	$	(46,750)	$	(45,294)
Total amount of Loss on Extinguishment of Debt presented in the consolidated statements of income (1)	$	—	$	—	$	—	$	(1,680)

⁽¹⁾Includes the write-off of approximately $0.4 million of discounts and unamortized debt issuance costs associated with the repayment of debt.

Piedmont estimates that approximately $0.2 million will be reclassified from OCI as a reduction of 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, 2019 and 2018, 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 $7.1 million as of September 30, 2019. 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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Consolidated Statements of Income - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Revenues:
Rental and tenant reimbursement revenue	$ 130,579	$ 124,518	$ 382,213	$ 372,491
Total revenues	135,421	129,708	399,025	388,782
Expenses:
Property operating costs	54,613	49,679	158,798	154,175
Depreciation	27,131	26,852	80,004	81,112
Amortization	19,505	14,840	55,666	46,818
Impairment loss on real estate assets	1,953	0	1,953	0
General and administrative	7,950	6,677	29,736	21,487
Operating expenses	111,152	98,048	326,157	303,592
Other income (expense):
Interest expense	(16,145)	(15,849)	(46,750)	(45,294)
Other income	263	303	1,292	1,480
Loss on extinguishment of debt	0	0	0	(1,680)
Gain on sale of real estate assets	32	0	39,370	45,186
Nonoperating income (expense)	(15,850)	(15,546)	(6,088)	(308)
Net income	8,419	16,114	66,780	84,882
Net loss applicable to noncontrolling interest	3	0	3	4
Net income applicable to Piedmont	$ 8,422	$ 16,114	$ 66,783	$ 84,886
Per share information – basic:
Net income applicable to common stockholders (in dollars per share)	$ 0.07	$ 0.13	$ 0.53	$ 0.65
Per share information – diluted:
Net income applicable to common stockholders (in dollars per share)	$ 0.07	$ 0.13	$ 0.53	$ 0.65
Weighted-average common shares outstanding – basic (in shares)	125,783,408	128,371,062	125,684,202	130,837,223
Weighted-average common shares outstanding – diluted (in shares)	126,239,744	128,818,658	126,189,851	131,187,127
Property management fee revenue
Revenues:
Property management and other property related revenue	$ 405	$ 368	$ 2,819	$ 1,059
Other property related income
Revenues:
Property management and other property related revenue	$ 4,437	$ 4,822	$ 13,993	$ 15,232

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Related Party Transactions	9 Months Ended
	Sep. 30, 2019
Related Party Transactions [Abstract]
Related Party Transactions	Related-Party TransactionsDuring the nine months ended September 30, 2019, Piedmont entered into employment or retirement agreements with certain of its current and former executive officers as more fully described in its Definitive Proxy Statement and Current Report on Form 8-K filed on March 19, 2019. There were no other related-party transactions during the nine months ended September 30, 2019.