10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549 

____________________________________________________________________________

FORM 10-Q 

____________________________________________________________________________

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

For the Quarterly Period Ended June 30, 2021

OR

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

For the transition period from              to              .

Commission file number 1-34907

____________________________________________________________________________

STAG Industrial, Inc.

(Exact name of registrant as specified in its charter) 

____________________________________________________________________________

Maryland		27-3099608
(State or other jurisdiction of		(IRS Employer Identification No.)
incorporation or organization)
One Federal Street
23rd Floor
Boston,	Massachusetts	02110
(Address of principal executive offices)		(Zip code)

(617) 574-4777

(Registrant’s telephone number, including area code)

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

Title of each class	Trading symbol(s)	Name of each exchange on which registered
Common stock, $0.01 par value per share	STAG	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 ☒  No ☐

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerging growth company. See 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 ☒     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. ☐

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

The number of shares of common stock outstanding at July 26, 2021 was 162,038,478.

STAG Industrial, Inc.

Table of Contents 

PART I.	Financial Information	3
Item 1.	Financial Statements (unaudited)	3
	Consolidated Balance Sheets as of June 30, 2021 and December 31, 2020	3
	Consolidated Statements of Operations for the Three and Six Months Ended June 30, 2021 and 2020	4
	Consolidated Statements of Comprehensive Income for the Three and Six Months Ended June 30, 2021 and 2020	5
	Consolidated Statements of Equity for the Three and Six Months Ended June 30, 2021 and 2020	6
	Consolidated Statements of Cash Flows for the Three and Six Months Ended June 30, 2021 and 2020	7
	Notes to Consolidated Financial Statements	8
Item 2.	Management’s Discussion and Analysis of Financial Condition and Results of Operations	26
Item 3.	Quantitative and Qualitative Disclosures about Market Risk	50
Item 4.	Controls and Procedures	50
PART II.	Other Information	51
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	51
Item 6.	Exhibits	52
	SIGNATURES	53

2

Part I. Financial Information

Item 1.  Financial Statements

STAG Industrial, Inc.

Consolidated Balance Sheets

(unaudited, in thousands, except share data)

	June 30, 2021		December 31, 2020
Assets
Rental Property:
Land	$	510,413	$	492,783
Buildings and improvements, net of accumulated depreciation of $552,967 and $495,348, respectively	3,630,823		3,532,608
Deferred leasing intangibles, net of accumulated amortization of $260,893 and $258,005, respectively	482,672		499,802
Total rental property, net	4,623,908		4,525,193
Cash and cash equivalents	14,588		15,666
Restricted cash	3,927		4,673
Tenant accounts receivable	83,262		77,796
Prepaid expenses and other assets	51,639		43,471
Interest rate swaps	1,704		—
Operating lease right-of-use assets	24,634		25,403
Assets held for sale, net	2,737		444
Total assets	$	4,806,399	$	4,692,646
Liabilities and Equity
Liabilities:
Unsecured credit facility	$	284,000	$	107,000
Unsecured term loans, net	970,930		971,111
Unsecured notes, net	573,390		573,281
Mortgage notes, net	55,811		51,898
Accounts payable, accrued expenses and other liabilities	65,269		69,765
Interest rate swaps	28,795		40,656
Tenant prepaid rent and security deposits	30,732		27,844
Dividends and distributions payable	19,803		19,379
Deferred leasing intangibles, net of accumulated amortization of $17,510 and $15,759, respectively	32,929		32,762
Operating lease liabilities	27,838		27,898
Total liabilities	2,089,497		1,921,594
Commitments and contingencies (Note 11)
Equity:
Preferred stock, par value $0.01 per share, 20,000,000 shares authorized at June 30, 2021 and December 31, 2020,
Series C, -0- and 3,000,000 shares (liquidation preference of $25.00 per share) issued and outstanding at June 30, 2021 and December 31, 2020, respectively	—		75,000
Common stock, par value $0.01 per share, 300,000,000 shares authorized at June 30, 2021 and December 31, 2020, respectively, 160,315,538 and 158,209,823 shares issued and outstanding at June 30, 2021 and December 31, 2020, respectively	1,603		1,582
Additional paid-in capital	3,486,942		3,421,721
Cumulative dividends in excess of earnings	(804,113)		(742,071)
Accumulated other comprehensive loss	(26,742)		(40,025)
Total stockholders’ equity	2,657,690		2,716,207
Noncontrolling interest	59,212		54,845
Total equity	2,716,902		2,771,052
Total liabilities and equity	$	4,806,399	$	4,692,646

The accompanying notes are an integral part of these consolidated financial statements.

3

STAG Industrial, Inc.

Consolidated Statements of Operations

(unaudited, in thousands, except per share data)

	Three months ended June 30,				Six months ended June 30,
	2021		2020		2021		2020
Revenue
Rental income	$	137,805	$	117,471	$	271,630	$	235,810
Other income	622		146		792		355
Total revenue	138,427		117,617		272,422		236,165
Expenses
Property	25,356		20,392		52,358		42,339
General and administrative	12,578		9,406		25,368		19,779
Depreciation and amortization	57,332		53,606		115,739		106,294
Other expenses	511		588		1,363		1,064
Total expenses	95,777		83,992		194,828		169,476
Other income (expense)
Interest and other income	30		156		62		235
Interest expense	(15,273)		(15,333)		(30,631)		(30,197)
Debt extinguishment and modification expenses	—		(834)		(679)		(834)
Gain on involuntary conversion	—		657		—		657
Gain on the sales of rental property, net	5,976		1,045		12,385		47,804
Total other income (expense)	(9,267)		(14,309)		(18,863)		17,665
Net income	$	33,383	$	19,316	$	58,731	$	84,354
Less: income attributable to noncontrolling interest after preferred stock dividends	733		407		1,206		2,005
Net income attributable to STAG Industrial, Inc.	$	32,650	$	18,909	$	57,525	$	82,349
Less: preferred stock dividends	—		1,289		1,289		2,578
Less: redemption of preferred stock	—		—		2,582		—
Less: amount allocated to participating securities	74		68		147		136
Net income attributable to common stockholders	$	32,576	$	17,552	$	53,507	$	79,635
Weighted average common shares outstanding — basic	159,736		148,663		159,086		148,116
Weighted average common shares outstanding — diluted	161,367		149,027		160,249		148,341
Net income per share — basic and diluted
Net income per share attributable to common stockholders — basic	$	0.20	$	0.12	$	0.34	$	0.54
Net income per share attributable to common stockholders — diluted	$	0.20	$	0.12	$	0.33	$	0.54

The accompanying notes are an integral part of these consolidated financial statements.

4

STAG Industrial, Inc.

Consolidated Statements of Comprehensive Income

(unaudited, in thousands)

	Three months ended June 30,				Six months ended June 30,
	2021		2020		2021		2020
Net income	$	33,383	$	19,316	$	58,731	$	84,354
Other comprehensive income (loss):
Income (loss) on interest rate swaps	1,432		(2,009)		13,582		(32,200)
Other comprehensive income (loss)	1,432		(2,009)		13,582		(32,200)
Comprehensive income	34,815		17,307		72,313		52,154
Income attributable to noncontrolling interest after preferred stock dividends	(733)		(407)		(1,206)		(2,005)
Other comprehensive (income) loss attributable to noncontrolling interest	(31)		32		(299)		789
Comprehensive income attributable to STAG Industrial, Inc.	$	34,051	$	16,932	$	70,808	$	50,938

The accompanying notes are an integral part of these consolidated financial statements.

5

STAG Industrial, Inc.

Consolidated Statements of Equity

(unaudited, in thousands, except share data)

	Preferred Stock		Common Stock			Additional Paid-in Capital		Cumulative Dividends in Excess of Earnings		Accumulated Other Comprehensive Loss		Total Stockholders’ Equity		Noncontrolling Interest - Unit Holders in Operating Partnership		Total Equity
			Shares	Amount
Three months ended June 30, 2021
Balance, March 31, 2021	$	—	159,082,448	$	1,591	$	3,443,787	$	(778,727)	$	(28,143)	$	2,638,508	$	59,608	$	2,698,116
Proceeds from sales of common stock, net	—		1,208,014	12		41,781		—		—		41,793		—		41,793
Dividends and distributions, net	—		—	—		—		(58,036)		—		(58,036)		(4,325)		(62,361)
Non-cash compensation activity, net	—		2,901	—		2,192		—		—		2,192		2,347		4,539
Redemption of common units to common stock	—		22,175	—		368		—		—		368		(368)		—
Rebalancing of noncontrolling interest	—		—	—		(1,186)		—		—		(1,186)		1,186		—
Other comprehensive income	—		—	—		—		—		1,401		1,401		31		1,432
Net income	—		—	—		—		32,650		—		32,650		733		33,383
Balance, June 30, 2021	$	—	160,315,538	$	1,603	$	3,486,942	$	(804,113)	$	(26,742)	$	2,657,690	$	59,212	$	2,716,902
Three months ended June 30, 2020
Balance, March 31, 2020	$	75,000	148,708,031	$	1,487	$	3,142,495	$	(714,799)	$	(47,860)	$	2,456,323	$	60,791	$	2,517,114
Proceeds from sales of common stock, net	—		—	—		(67)		—		—		(67)		—		(67)
Dividends and distributions, net	—		—	—		—		(54,880)		—		(54,880)		(2,105)		(56,985)
Non-cash compensation activity, net	—		4,750	—		1,970		—		—		1,970		978		2,948
Redemption of common units to common stock	—		228,340	2		3,656		—		—		3,658		(3,658)		—
Rebalancing of noncontrolling interest	—		—	—		109		—		—		109		(109)		—
Other comprehensive loss	—		—	—		—		—		(1,977)		(1,977)		(32)		(2,009)
Net income	—		—	—		—		18,909		—		18,909		407		19,316
Balance, June 30, 2020	$	75,000	148,941,121	$	1,489	$	3,148,163	$	(750,770)	$	(49,837)	$	2,424,045	$	56,272	$	2,480,317
Six months ended June 30, 2021
Balance, December 31, 2020	$	75,000	158,209,823	$	1,582	$	3,421,721	$	(742,071)	$	(40,025)	$	2,716,207	$	54,845	$	2,771,052
Proceeds from sales of common stock, net	—		1,888,290	19		63,340		—		—		63,359		—		63,359
Redemption of preferred stock	(75,000)		—	—		2,573		(2,582)		—		(75,009)		—		(75,009)
Dividends and distributions, net	—		—	—		—		(116,864)		—		(116,864)		(5,761)		(122,625)
Non-cash compensation activity, net	—		98,091	1		(1,022)		(121)		—		(1,142)		8,954		7,812
Redemption of common units to common stock	—		119,334	1		1,990		—		—		1,991		(1,991)		—
Rebalancing of noncontrolling interest	—		—	—		(1,660)		—		—		(1,660)		1,660		—
Other comprehensive income	—		—	—		—		—		13,283		13,283		299		13,582
Net income	—		—	—		—		57,525		—		57,525		1,206		58,731
Balance, June 30, 2021	$	—	160,315,538	$	1,603	$	3,486,942	$	(804,113)	$	(26,742)	$	2,657,690	$	59,212	$	2,716,902
Six months ended June 30, 2020
Balance, December 31, 2019	$	75,000	142,815,593	$	1,428	$	2,970,553	$	(723,027)	$	(18,426)	$	2,305,528	$	58,363	$	2,363,891
Proceeds from sales of common stock, net	—		5,600,000	56		172,600		—		—		172,656		—		172,656
Dividends and distributions, net	—		—	—		—		(109,702)		—		(109,702)		(3,001)		(112,703)
Non-cash compensation activity, net	—		77,798	1		1,112		(390)		—		723		3,596		4,319
Redemption of common units to common stock	—		447,730	4		7,082		—		—		7,086		(7,086)		—
Rebalancing of noncontrolling interest	—		—	—		(3,184)		—		—		(3,184)		3,184		—
Other comprehensive loss	—		—	—		—		—		(31,411)		(31,411)		(789)		(32,200)
Net income	—		—	—		—		82,349		—		82,349		2,005		84,354
Balance, June 30, 2020	$	75,000	148,941,121	$	1,489	$	3,148,163	$	(750,770)	$	(49,837)	$	2,424,045	$	56,272	$	2,480,317

The accompanying notes are an integral part of these consolidated financial statements.

6

STAG Industrial, Inc.

Consolidated Statements of Cash Flows

(unaudited, in thousands)

	Six months ended June 30,
	2021		2020
Cash flows from operating activities:
Net income	$	58,731	$	84,354
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	115,739		106,294
Gain on involuntary conversion	—		(657)
Non-cash portion of interest expense	1,276		1,422
Amortization of above and below market leases, net	1,799		2,152
Straight-line rent adjustments, net	(8,887)		(5,498)
Debt extinguishment and modification expenses	—		834
Gain on the sales of rental property, net	(12,385)		(47,804)
Non-cash compensation expense	9,154		5,790
Change in assets and liabilities:
Tenant accounts receivable	3,212		(475)
Prepaid expenses and other assets	(10,018)		(4,116)
Accounts payable, accrued expenses and other liabilities	864		3,243
Tenant prepaid rent and security deposits	2,888		2,549
Total adjustments	103,642		63,734
Net cash provided by operating activities	162,373		148,088
Cash flows from investing activities:
Acquisitions of land and buildings and improvements	(194,164)		(110,121)
Additions of land and building and improvements	(18,913)		(27,299)
Acquisitions of other assets	—		(450)
Proceeds from sales of rental property, net	39,619		101,881
Proceeds from involuntary conversion	—		782
Acquisition deposits, net	(877)		660
Acquisitions of deferred leasing intangibles	(27,682)		(20,542)
Net cash used in investing activities	(202,017)		(55,089)
Cash flows from financing activities:
Proceeds from unsecured credit facility	765,000		387,000
Repayment of unsecured credit facility	(588,000)		(533,000)
Proceeds from unsecured term loans	300,000		400,000
Repayment of unsecured term loans	(300,000)		(300,000)
Repayment of mortgage notes	(1,093)		(1,993)
Payment of loan fees and costs	(2,847)		(1,129)
Payment of defeasance fees and other costs	—		(425)
Proceeds from sales of common stock, net	63,314		172,626
Redemption of preferred stock	(75,000)		—
Dividends and distributions	(122,212)		(111,868)
Repurchase and retirement of share-based compensation	(1,342)		(1,472)
Net cash provided by financing activities	37,820		9,739
Increase (decrease) in cash and cash equivalents and restricted cash	(1,824)		102,738
Cash and cash equivalents and restricted cash—beginning of period	20,339		11,864
Cash and cash equivalents and restricted cash—end of period	$	18,515	$	114,602
Supplemental disclosure:
Cash paid for interest, net of capitalized interest	$	29,574	$	28,520
Supplemental schedule of non-cash investing and financing activities
Acquisitions of land and buildings and improvements	$	(4,239)	$	(111)
Acquisitions of deferred leasing intangibles	$	(703)	$	(33)
Change in additions of land, building, and improvements included in accounts payable, accrued expenses, and other liabilities	$	3,469	$	683
Additions to building and other capital improvements from non-cash compensation	$	—	$	(17)
Assumption of mortgage notes	$	5,103	$	—
Fair market value adjustment to mortgage notes acquired	$	(161)	$	—
Change in loan fees, costs, and offering costs included in accounts payable, accrued expenses, and other liabilities	$	1,016	$	(1,020)
Dividends and distributions accrued	$	19,803	$	18,301

The accompanying notes are an integral part of these consolidated financial statements.

7

STAG Industrial, Inc.

Notes to Consolidated Financial Statements

(unaudited)

1. Organization and Description of Business

STAG Industrial, Inc. (the “Company”) is an industrial real estate operating company focused on the acquisition and operation of single-tenant, industrial properties throughout the United States. The Company was formed as a Maryland corporation and has elected to be treated and intends to continue to qualify as a real estate investment trust (“REIT”) under Sections 856 through 860 of the Internal Revenue Code of 1986, as amended. The Company is structured as an umbrella partnership REIT, commonly called an UPREIT, and owns substantially all of its assets and conducts substantially all of its business through its operating partnership, STAG Industrial Operating Partnership, L.P., a Delaware limited partnership (the “Operating Partnership”). As of June 30, 2021 and December 31, 2020, the Company owned a 97.8% and 98.0%, respectively, common equity interest in the Operating Partnership. The Company, through its wholly owned subsidiary, is the sole general partner of the Operating Partnership. As used herein, the “Company” refers to STAG Industrial, Inc. and its consolidated subsidiaries and partnerships, including the Operating Partnership, except where context otherwise requires.

As of June 30, 2021, the Company owned 501 buildings in 39 states with approximately 100.1 million rentable square feet, consisting of 421 warehouse/distribution buildings, 73 light manufacturing buildings, and seven flex/office buildings.

COVID-19 Pandemic

Currently, one of the most significant risks and uncertainties facing the Company and the real estate industry generally is the potential adverse effect of the ongoing public health crisis of the novel coronavirus disease (“COVID-19”) pandemic.

The Company closely monitors the effect of the COVID-19 pandemic on all aspects of its business, including how the pandemic will affect its tenants and business partners. The Company did not incur significant disruptions from the COVID-19 pandemic during the three and six months ended June 30, 2021. In addition, the Company did not enter into any rent deferral agreements during the three and six months ended June 30, 2021. The Company will continue to evaluate tenant rent relief requests on an individual basis, considering a number of factors. Not all tenant requests will ultimately result in modified agreements, nor is the Company foregoing its contractual rights under its lease agreements.

The Company remains unable to predict the ultimate impact that the pandemic will have on its financial condition, results of operations and cash flows due to numerous uncertainties. The extent to which the COVID-19 pandemic affects the Company’s operations and those of its tenants will depend on future developments, which are highly uncertain and cannot be predicted with confidence, including the scope, severity and duration of the pandemic, the actions taken to contain the pandemic or mitigate its impact, and the direct and indirect economic effects of the pandemic and containment measures, among others.

2. Summary of Significant Accounting Policies

Interim Financial Information

The accompanying interim financial statements have been presented in conformity with accounting principles generally accepted in the United States of America (“GAAP”) and with the instructions to Form 10-Q and Regulation S-X for interim financial information. Accordingly, these statements do not include all of the information and notes required by GAAP for complete financial statements. In the opinion of management, the accompanying interim financial statements include all adjustments, consisting of normal recurring items, necessary for their fair statement in conformity with GAAP. Interim results are not necessarily indicative of results for a full year. The year-end consolidated balance sheet data was derived from audited financial statements, but does not include all disclosures required by GAAP. The information included in this Quarterly Report on Form 10-Q should be read in conjunction with the Company’s consolidated financial statements and notes thereto contained in the Company’s Annual Report on Form 10-K for the fiscal year ended December 31, 2020.

8

Basis of Presentation

The Company’s consolidated financial statements include the accounts of the Company, the Operating Partnership, and their subsidiaries. Interests in the Operating Partnership not owned by the Company are referred to as “Noncontrolling Common Units.” These Noncontrolling Common Units are held by other limited partners in the form of common units (“Other Common Units”) and long term incentive plan units (“LTIP units”) issued pursuant to the STAG Industrial, Inc. 2011 Equity Incentive Plan, as amended and restated (the “2011 Plan”). All significant intercompany balances and transactions have been eliminated in the consolidation of entities. The financial statements of the Company are presented on a consolidated basis for all periods presented.

Restricted Cash

The following table presents a reconciliation of cash and cash equivalents and restricted cash reported on the accompanying Consolidated Balance Sheets to amounts reported on the accompanying Consolidated Statements of Cash Flows.

Reconciliation of cash and cash equivalents and restricted cash (in thousands)	June 30, 2021		December 31, 2020
Cash and cash equivalents	$	14,588	$	15,666
Restricted cash	3,927		4,673
Total cash and cash equivalents and restricted cash	$	18,515	$	20,339

Incentive and Equity-Based Employee Compensation Plans

On January 7, 2021, the Company adopted the STAG Industrial, Inc. Employee Retirement Vesting Program (the “Vesting Program”) to provide supplemental retirement benefits for eligible employees. For those employees who are retirement eligible or will become retirement eligible during the applicable vesting period under the terms of the Vesting Program, the Company accelerates equity-based compensation through the employee’s six-month retirement notification period or retirement eligibility date, respectively. The adoption of the Vesting Program resulted in an increase to general and administrative expenses of approximately $1.4 million and $2.9 million for the three and six months ended June 30, 2021, respectively, due to the acceleration of equity-based compensation expense for certain eligible employees. The Company estimates that the adoption of the Vesting Program will result in an increase in general and administrative expenses of approximately $2.4 million for the year ending December 31, 2021.

Taxes

Federal Income Taxes

The Company’s taxable REIT subsidiary recognized net loss of approximately $4,000, $4,000, $0 and $0 for the three and six months ended June 30, 2021 and 2020, respectively.

State and Local Income, Excise, and Franchise Tax

State and local income, excise, and franchise taxes in the amount of $0.4 million, $0.8 million, $0.5 million and $0.9 million have been recorded in other expenses on the accompanying Consolidated Statements of Operations for the three and six months ended June 30, 2021 and 2020, respectively.

Uncertain Tax Positions

As of June 30, 2021 and December 31, 2020, there were no liabilities for uncertain tax positions.

Concentrations of Credit Risk

Management believes the current credit risk of the Company’s portfolio is reasonably well diversified and does not contain any unusual concentration of credit risk.

9

3. Rental Property

The following table summarizes the components of rental property as of June 30, 2021 and December 31, 2020.

Rental Property (in thousands)	June 30, 2021		December 31, 2020
Land	$	510,413	$	492,783
Buildings, net of accumulated depreciation of $366,571 and $327,043, respectively	3,306,299		3,195,439
Tenant improvements, net of accumulated depreciation of $25,078 and $24,891, respectively	41,000		43,684
Building and land improvements, net of accumulated depreciation of $161,318 and $143,414, respectively	278,759		275,433
Construction in progress	4,765		18,052
Deferred leasing intangibles, net of accumulated amortization of $260,893 and $258,005, respectively	482,672		499,802
Total rental property, net	$	4,623,908	$	4,525,193

Acquisitions

The following table summarizes the acquisitions of the Company during the three and six months ended June 30, 2021. The Company accounted for all of its acquisitions as asset acquisitions.

Market (1)	Date Acquired	Square Feet	Number of Buildings	Purchase Price (in thousands)
Omaha/Council Bluffs, NE-IA	January 21, 2021	370,000	1	$	24,922
Minneapolis/St Paul, MN	February 24, 2021	80,655	1	10,174
Long Island, NY	February 25, 2021	64,224	1	8,516
Sacramento, CA	February 25, 2021	267,284	1	25,917
Little Rock/N Little Rock	March 1, 2021	300,160	1	24,317
Cleveland, OH	March 18, 2021	170,000	1	6,382
Three months ended March 31, 2021		1,252,323	6	100,228
Indianapolis, IN	May 17, 2021	154,440	1	13,655
Baltimore, MD	May 17, 2021	46,851	1	6,228
Detroit, MI	June 1, 2021	248,040	1	23,786
Green Bay, WI	June 7, 2021	152,000	1	7,249
Phoenix, AZ	June 14, 2021	41,504	1	8,670
Cleveland, OH	June 17, 2021	179,577	1	19,602
Reno/Sparks, NV	June 30, 2021	183,435	1	13,892
Washington, DC	June 30, 2021	193,420	1	17,521
Stockton/Modesto, CA	June 30, 2021	150,000	1	16,118
Three months ended June 30, 2021		1,349,267	9	126,721
Six months ended June 30, 2021		2,601,590	15	$	226,949

(1) As defined by CoStar Realty Information Inc (“CoStar”). If the building is located outside of a CoStar defined market, the city and state is reflected.

The following table summarizes the allocation of the consideration paid at the date of acquisition during the six months ended June 30, 2021 for the acquired assets and liabilities in connection with the acquisitions identified in the table above.

Acquired Assets and Liabilities	Purchase Price (in thousands)		Weighted Average Amortization Period (years) of Intangibles at Acquisition
Land	$	21,844	N/A
Buildings	165,549		N/A
Tenant improvements	1,575		N/A
Building and land improvements	9,435		N/A
Deferred leasing intangibles - In-place leases	20,206		8.5
Deferred leasing intangibles - Tenant relationships	9,761		11.4
Deferred leasing intangibles - Above market leases	2,279		13.8
Deferred leasing intangibles - Below market leases	(3,861)		6.4
Below market assumed debt adjustment	161		18.8
Total purchase price	$	226,949
Less: Mortgage notes assumed	(5,103)
Net assets acquired	$	221,846

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On February 25, 2021, the Company assumed a mortgage note of approximately $5.1 million in connection with the acquisition of the property located in Long Island, NY. For a discussion of the method used to determine the fair value of the mortgage note, see Note 4.

The following table summarizes the results of operations for the three and six months ended June 30, 2021 for the buildings acquired during the six months ended June 30, 2021 included in the Company’s Consolidated Statements of Operations from the date of acquisition.

Results of Operations (in thousands)	Three months ended June 30, 2021		Six months ended June 30, 2021
Total revenue	$	2,219	$	3,506
Net income	$	284	$	307

Dispositions

During the six months ended June 30, 2021, the Company sold six buildings to third parties comprised of approximately 0.9 million rentable square feet with a net book value of approximately $27.2 million. These buildings contributed approximately $0.2 million, $0.5 million, $1.1 million and $2.1 million to revenue for the three and six months ended June 30, 2021 and 2020, respectively. These buildings contributed approximately $0.1 million, $0.1 million, $0.5 million and $0.8 million to net income (exclusive of gain on the sales of rental property, net) for the three and six months ended June 30, 2021 and 2020, respectively. Net proceeds from the sales of rental property were approximately $39.6 million and the Company recognized the full gain on the sales of rental property, net, of approximately $12.4 million for the six months ended June 30, 2021.

Assets Held for Sale

As of June 30, 2021, the related land, building and improvements, net, and deferred leasing intangibles, net, of approximately $0.8 million, $1.9 million, and $0, respectively, for one building located in Charlotte, NC were classified as assets held for sale, net on the accompanying Consolidated Balance Sheets. This building contributed approximately $0.1 million, $0.3 million, $0.2 million and $0.3 million to revenue for the three and six months ended June 30, 2021 and 2020, respectively. This building contributed approximately $0.1 million, $0.2 million, $0.1 million and $0.1 million to net income for the three and six months ended June 30, 2021 and 2020, respectively.

Gain on Involuntary Conversion

During the three and six months ended June 30, 2021, the Company did not recognize any gain on involuntary conversion. During the three and six months ended June 30, 2020, the Company recognized a gain on involuntary conversion of approximately $0.7 million related to an eminent domain taking of a portion of a parcel of land.

Deferred Leasing Intangibles

The following table summarizes the deferred leasing intangibles on the accompanying Consolidated Balance Sheets as of June 30, 2021 and December 31, 2020.

	June 30, 2021						December 31, 2020
Deferred Leasing Intangibles (in thousands)	Gross		Accumulated Amortization		Net		Gross		Accumulated Amortization		Net
Above market leases	$	86,466	$	(31,194)	$	55,272	$	92,125	$	(33,629)	$	58,496
Other intangible lease assets	657,099		(229,699)		427,400		665,682		(224,376)		441,306
Total deferred leasing intangible assets	$	743,565	$	(260,893)	$	482,672	$	757,807	$	(258,005)	$	499,802
Below market leases	$	50,439	$	(17,510)	$	32,929	$	48,521	$	(15,759)	$	32,762
Total deferred leasing intangible liabilities	$	50,439	$	(17,510)	$	32,929	$	48,521	$	(15,759)	$	32,762

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The following table summarizes the amortization expense and the net decrease to rental income for the amortization of deferred leasing intangibles during the three and six months ended June 30, 2021 and 2020.

	Three months ended June 30,				Six months ended June 30,
Deferred Leasing Intangibles Amortization (in thousands)	2021		2020		2021		2020
Net decrease to rental income related to above and below market lease amortization	$	330	$	1,174	$	1,810	$	2,164
Amortization expense related to other intangible lease assets	$	21,422	$	21,076	$	43,869	$	41,378

The following table summarizes the amortization of deferred leasing intangibles over the next five calendar years beginning with 2021 as of June 30, 2021.

Year	Amortization Expense Related to Other Intangible Lease Assets (in thousands)		Net Decrease to Rental Income Related to Above and Below Market Lease Amortization (in thousands)
Remainder of 2021	$	38,884	$	283
2022	$	68,917	$	327
2023	$	60,313	$	820
2024	$	51,203	$	1,286
2025	$	43,445	$	1,164

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4. Debt

The following table summarizes the Company’s outstanding indebtedness, including borrowings under the Company’s unsecured credit facility, unsecured term loans, unsecured notes, and mortgage notes as of June 30, 2021 and December 31, 2020.

Loan	Principal Outstanding as of June 30, 2021 (in thousands)		Principal Outstanding as of December 31, 2020 (in thousands)		Interest  Rate(1)(2)		Maturity Date	Prepayment Terms(3)
Unsecured credit facility:
Unsecured Credit Facility(4)	$	284,000	$	107,000	L + 0.90%		January 12, 2024	i
Total unsecured credit facility	284,000		107,000
Unsecured term loans:
Unsecured Term Loan A	150,000		150,000		3.38	%	March 31, 2022	i
Unsecured Term Loan D	150,000		150,000		2.85	%	January 4, 2023	i
Unsecured Term Loan E	175,000		175,000		3.92	%	January 15, 2024	i
Unsecured Term Loan F	200,000		200,000		3.11	%	January 12, 2025	i
Unsecured Term Loan G	300,000		300,000		1.28	%	February 5, 2026	i
Total unsecured term loans	975,000		975,000
Total unamortized deferred financing fees and debt issuance costs	(4,070)		(3,889)
Total carrying value unsecured term loans, net	970,930		971,111
Unsecured notes:
Series F Unsecured Notes	100,000		100,000		3.98	%	January 5, 2023	ii
Series A Unsecured Notes	50,000		50,000		4.98	%	October 1, 2024	ii
Series D Unsecured Notes	100,000		100,000		4.32	%	February 20, 2025	ii
Series G Unsecured Notes	75,000		75,000		4.10	%	June 13, 2025	ii
Series B Unsecured Notes	50,000		50,000		4.98	%	July 1, 2026	ii
Series C Unsecured Notes	80,000		80,000		4.42	%	December 30, 2026	ii
Series E Unsecured Notes	20,000		20,000		4.42	%	February 20, 2027	ii
Series H Unsecured Notes	100,000		100,000		4.27	%	June 13, 2028	ii
Total unsecured notes	575,000		575,000
Total unamortized deferred financing fees and debt issuance costs	(1,610)		(1,719)
Total carrying value unsecured notes, net	573,390		573,281
Mortgage notes (secured debt):
Wells Fargo Bank, National Association CMBS Loan	47,580		48,546		4.31	%	December 1, 2022	iii
Thrivent Financial for Lutherans	3,494		3,556		4.78	%	December 15, 2023	iv
United of Omaha Life Insurance Company	5,040		—		3.71	%	October 1, 2039	ii
Total mortgage notes	56,114		52,102
Net unamortized fair market value premium (discount)	(134)		29
Total unamortized deferred financing fees and debt issuance costs	(169)		(233)
Total carrying value mortgage notes, net	55,811		51,898
Total / weighted average interest rate(5)	$	1,884,131	$	1,703,290	2.99	%

(1)Interest rate as of June 30, 2021. At June 30, 2021, the one-month LIBOR (“L”) was 0.10050%. The current interest rate is not adjusted to include the amortization of deferred financing fees or debt issuance costs incurred in obtaining debt or any unamortized fair market value premiums. The spread over the applicable rate for the Company’s unsecured credit facility and unsecured term loans is based on the Company’s debt rating, as defined in the respective loan agreements.

(2)The unsecured term loans have a stated interest rate of one-month LIBOR plus a spread of 1.0%. As of June 30, 2021, one-month LIBOR for the Unsecured Term Loans A, D, E, F, and G was swapped to a fixed rate of 2.38%, 1.85%, 2.92%, 2.11%, and 0.28%, respectively. One-month LIBOR for the Unsecured Term Loan G will be swapped to a fixed rate of 0.94% effective April 18, 2023.

(3)Prepayment terms consist of (i) pre-payable with no penalty; (ii) pre-payable with penalty; (iii) pre-payable without penalty three months prior to the maturity date, however can be defeased; and (iv) pre-payable without penalty three months prior to the maturity date.

(4)The capacity of the unsecured credit facility is $750.0 million. Deferred financing fees and debt issuance costs, net of accumulated amortization related to the unsecured credit facility of approximately $2.2 million and $1.6 million is included in prepaid expenses and other assets on the accompanying Consolidated Balance Sheets as of June 30, 2021 and December 31, 2020, respectively. The initial maturity date is January 15, 2023, which may be extended pursuant to two six-month extension options exercisable by the Company in its discretion upon advance written notice. Exercise of each six-month option is subject to the following conditions: (i) absence of a default immediately before the extension and immediately after giving effect to the extension, (ii) accuracy of representations and warranties as of the extension date (both immediately before and after the extension), as if made on the extension date, and (iii) payment of a fee. Neither extension option is subject to lender consent, assuming proper notice and satisfaction of the conditions.

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(5)The weighted average interest rate was calculated using the fixed interest rate swapped on the notional amount of $975.0 million of debt, and is not adjusted to include the amortization of deferred financing fees or debt issuance costs incurred in obtaining debt or any unamortized fair market value premiums or discounts.

The aggregate undrawn nominal commitment on the unsecured credit facility as of June 30, 2021 was approximately $463.1 million, including issued letters of credit. The Company’s actual borrowing capacity at any given point in time may be less and is restricted to a maximum amount based on the Company’s debt covenant compliance. Total accrued interest for the Company’s indebtedness was approximately $6.3 million and $6.3 million as of June 30, 2021 and December 31, 2020, respectively, and is included in accounts payable, accrued expenses and other liabilities on the accompanying Consolidated Balance Sheets.

The following table summarizes the costs included in interest expense related to the Company’s debt arrangements on the accompanying Consolidated Statement of Operations for the three and six months ended June 30, 2021 and 2020.

	Three months ended June 30,				Six months ended June 30,
Costs Included in Interest Expense (in thousands)	2021		2020		2021		2020
Amortization of deferred financing fees and debt issuance costs and fair market value premiums/discounts	$	789	$	746	$	1,276	$	1,422
Facility, unused, and other fees	$	440	$	316	$	826	$	680

Subsequent to June 30, 2021, on July 8, 2021, the Company entered into a note purchase agreement for the future private placement by the Operating Partnership of $275.0 million senior unsecured notes, maturing September 29, 2031, with a fixed annual interest rate of 2.80%, and $50.0 million senior unsecured notes, maturing September 28, 2033, with a fixed annual interest rate of 2.95%. The notes are expected to be issued on or around September 28, 2021, subject to conditions.

On February 25, 2021, the Company assumed a mortgage note with United of Omaha Life Insurance Company of approximately $5.1 million in connection with the acquisition of the property located in Long Island, NY, which serves as collateral for the debt. The debt matures on October 1, 2039 and bears interest at 3.71% per annum. The assumed debt was recorded at fair value and a fair value discount of approximately $0.2 million was recorded during three months ended March 31, 2021. The fair value of debt was determined by discounting the future cash flows using the current rate of approximately 4.10% at which loans would be made to borrowers with similar credit ratings for loans with similar maturities, terms, and loan-to-value ratios. The fair value of the debt is based on Level 3 inputs and is a nonrecurring fair value measurement.

On February 5, 2021, the Company entered into an amendment to the unsecured credit facility (the “Credit Facility Amendment”). The Credit Facility Amendment provides for an increase in the aggregate commitments available for borrowing under the unsecured credit facility from $500 million to up to $750 million. As of June 30, 2021, the unsecured credit facility bore an interest rate of LIBOR plus a spread of 0.90% based on the Company’s debt rating, as defined in the loan agreement. In connection with the Credit Facility Amendment, the Company incurred approximately $1.2 million in costs which are being deferred and amortized through the maturity date of the unsecured credit facility. Other than the increase in the borrowing commitments, the material terms of the unsecured credit facility remain unchanged.

On February 5, 2021, the Company entered into an amendment to the Unsecured Term Loan G (the “Amendment to Unsecured Term Loan G”). The Amendment to Unsecured Term Loan G provides for an extension of the maturity date to February 5, 2026 and a reduced stated interest rate of one-month LIBOR plus a spread that ranges from 0.85% to 1.65% for LIBOR borrowings based on the Company’s debt ratings. The Amendment to Unsecured Term Loan G also amended the provision for a minimum interest rate, or floor, for LIBOR borrowings to 0.00% and for Base Rate borrowings to 1.00%. As of June 30, 2021, borrowings under the Unsecured Term Loan G bore interest at LIBOR plus 1.00%. In connection with the Amendment to Unsecured Term Loan G, the Company incurred approximately $1.6 million in costs which are being deferred and amortized through the new maturity date of February 5, 2026. The Company also incurred approximately $0.7 million of modification expenses which were recognized in debt extinguishment and modification expenses in the accompanying Consolidated Statements of Operations. Additionally, the Company reversed the previously accrued extension fees of approximately $1.1 million from the amendment to the Unsecured Term Loan G that was entered into on April 17, 2020, which resulted in a decrease to interest expense of approximately $0.3 million. Other than the maturity and interest rate provisions described above, the material terms of the Unsecured Term Loan G remain unchanged.

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Financial Covenant Considerations

The Company was in compliance with all financial and other covenants as of June 30, 2021 and December 31, 2020 related to its unsecured credit facility, unsecured term loans, unsecured notes, and mortgage notes. The real estate net book value of the properties that are collateral for the Company’s debt arrangements was approximately $89.3 million and $81.4 million at June 30, 2021 and December 31, 2020, respectively, and is limited to senior, property-level secured debt financing arrangements.

Fair Value of Debt

The following table summarizes the aggregate principal outstanding under the Company’s debt arrangements and the corresponding estimate of fair value as of June 30, 2021 and December 31, 2020.

	June 30, 2021				December 31, 2020
Indebtedness (in thousands)	Principal Outstanding		Fair Value		Principal Outstanding		Fair Value
Unsecured credit facility	$	284,000	$	284,558	$	107,000	$	107,000
Unsecured term loans	975,000		979,222		975,000		978,448
Unsecured notes	575,000		627,036		575,000		628,575
Mortgage notes	56,114		58,435		52,102		54,485
Total principal amount	1,890,114		$	1,949,251	1,709,102		$	1,768,508
Net unamortized fair market value premium (discount)	(134)				29
Total unamortized deferred financing fees and debt issuance costs	(5,849)				(5,841)
Total carrying value	$	1,884,131			$	1,703,290

The applicable fair value guidance establishes a three tier value hierarchy, which prioritizes the inputs used in measuring fair value. These tiers include: Level 1, defined as observable inputs such as quoted prices in active markets; Level 2, defined as inputs other than quoted prices in active markets that are either directly or indirectly observable; and Level 3, defined as unobservable inputs in which little or no market data exists, therefore requiring an entity to develop its own assumptions. The fair value of the Company’s debt is based on Level 3 inputs.

5. Derivative Financial Instruments

Risk Management Objective of Using Derivatives

The Company’s use of derivative instruments is limited to the utilization of interest rate swaps to manage interest rate risk exposure on existing and future liabilities and not for speculative purposes. The principal objective of such arrangements is to minimize the risks and related costs associated with the Company’s operating and financial structure.

15

The following table summarizes the Company’s outstanding interest rate swaps as of June 30, 2021. All of the Company’s interest rate swaps are designated as qualifying cash flow hedges.

Interest Rate Derivative Counterparty	Trade Date	Effective Date	Notional Amount (in thousands)		Fair Value (in thousands)		Pay Fixed Interest Rate		Receive Variable Interest Rate	Maturity Date
Wells Fargo Bank, N.A.	Jan-08-2015	Mar-20-2015	$	25,000	$	(324)	1.8280	%	One-month L	Mar-31-2022
The Toronto-Dominion Bank	Jan-08-2015	Feb-14-2020	$	25,000	$	(441)	2.4535	%	One-month L	Mar-31-2022
Regions Bank	Jan-08-2015	Feb-14-2020	$	50,000	$	(891)	2.4750	%	One-month L	Mar-31-2022
Capital One, N.A.	Jan-08-2015	Feb-14-2020	$	50,000	$	(912)	2.5300	%	One-month L	Mar-31-2022
The Toronto-Dominion Bank	Jul-20-2017	Oct-30-2017	$	25,000	$	(637)	1.8485	%	One-month L	Jan-04-2023
Royal Bank of Canada	Jul-20-2017	Oct-30-2017	$	25,000	$	(638)	1.8505	%	One-month L	Jan-04-2023
Wells Fargo Bank, N.A.	Jul-20-2017	Oct-30-2017	$	25,000	$	(638)	1.8505	%	One-month L	Jan-04-2023
PNC Bank, N.A.	Jul-20-2017	Oct-30-2017	$	25,000	$	(637)	1.8485	%	One-month L	Jan-04-2023
PNC Bank, N.A.	Jul-20-2017	Oct-30-2017	$	50,000	$	(1,273)	1.8475	%	One-month L	Jan-04-2023
The Toronto-Dominion Bank	Apr-20-2020	Sep-29-2020	$	75,000	$	(64)	0.2750	%	One-month L	Apr-18-2023
Wells Fargo Bank, N.A.	Apr-20-2020	Sep-29-2020	$	75,000	$	(70)	0.2790	%	One-month L	Apr-18-2023
The Toronto-Dominion Bank	Apr-20-2020	Mar-19-2021	$	75,000	$	(64)	0.2750	%	One-month L	Apr-18-2023
Wells Fargo Bank, N.A.	Apr-20-2020	Mar-19-2021	$	75,000	$	(71)	0.2800	%	One-month L	Apr-18-2023
The Toronto-Dominion Bank	Jul-24-2018	Jul-26-2019	$	50,000	$	(3,243)	2.9180	%	One-month L	Jan-12-2024
PNC Bank, N.A.	Jul-24-2018	Jul-26-2019	$	50,000	$	(3,243)	2.9190	%	One-month L	Jan-12-2024
Bank of Montreal	Jul-24-2018	Jul-26-2019	$	50,000	$	(3,243)	2.9190	%	One-month L	Jan-12-2024
U.S. Bank, N.A.	Jul-24-2018	Jul-26-2019	$	25,000	$	(1,622)	2.9190	%	One-month L	Jan-12-2024
Wells Fargo Bank, N.A.	May-02-2019	Jul-15-2020	$	50,000	$	(2,932)	2.2460	%	One-month L	Jan-15-2025
U.S. Bank, N.A.	May-02-2019	Jul-15-2020	$	50,000	$	(2,932)	2.2459	%	One-month L	Jan-15-2025
Regions Bank	May-02-2019	Jul-15-2020	$	50,000	$	(2,930)	2.2459	%	One-month L	Jan-15-2025
Bank of Montreal	Jul-16-2019	Jul-15-2020	$	50,000	$	(1,990)	1.7165	%	One-month L	Jan-15-2025
U.S. Bank, N.A.	Feb-17-2021	Apr-18-2023	$	150,000	$	848	0.9385	%	One-month L	Feb-5-2026
Wells Fargo Bank, N.A.	Feb-17-2021	Apr-18-2023	$	75,000	$	428	0.9365	%	One-month L	Feb-5-2026
The Toronto-Dominion Bank	Feb-17-2021	Apr-18-2023	$	75,000	$	428	0.9360	%	One-month L	Feb-5-2026

The following table summarizes the fair value of the interest rate swaps outstanding as of June 30, 2021 and December 31, 2020.

Balance Sheet Line Item (in thousands)	Notional Amount June 30, 2021		Fair Value June 30, 2021		Notional Amount December 31, 2020		Fair Value December 31, 2020
Interest rate swaps-Asset	$	300,000	$	1,704	$	—	$	—
Interest rate swaps-Liability	$	975,000	$	(28,795)	$	1,125,000	$	(40,656)

Cash Flow Hedges of Interest Rate Risk

The Company’s objectives in using interest rate swaps are to add stability to interest expense and to manage its exposure to interest rate movements. 

For derivatives designated and that qualify as cash flow hedges of interest rate risk, the gain or loss on the derivative is recorded in accumulated other comprehensive income (loss) and subsequently reclassified into interest expense in the same periods during which the hedged transaction affects earnings.

Amounts reported in accumulated other comprehensive income (loss) related to derivatives designated as qualifying cash flow hedges will be reclassified to interest expense as interest payments are made on the Company’s variable rate debt. The Company estimates that approximately $14.6 million will be reclassified from accumulated other comprehensive loss as an increase to interest expense over the next 12 months.

16

The following table summarizes the effect of cash flow hedge accounting and the location in the consolidated financial statements for the three and six months ended June 30, 2021 and 2020.

	Three months ended June 30,				Six months ended June 30,
Effect of Cash Flow Hedge Accounting (in thousands)	2021		2020		2021		2020
Income (loss) recognized in accumulated other comprehensive loss on interest rate swaps	$	(2,501)	$	(5,249)	$	5,249	$	(36,336)
Loss reclassified from accumulated other comprehensive loss into income as interest expense	$	3,933	$	3,240	$	8,333	$	4,136
Total interest expense presented in the Consolidated Statements of Operations in which the effects of cash flow hedges are recorded	$	15,273	$	15,333	$	30,631	$	30,197

Credit-risk-related Contingent Features

The Company has agreements with each of its derivative counterparties that contain a provision where the Company could be declared in default on its derivative obligations if repayment of the underlying indebtedness is accelerated by the lender due to the Company’s default on the indebtedness.

As of June 30, 2021, the Company had not breached the provisions of these agreements and had not posted any collateral related to these agreements. If the Company had breached any of these provisions at June 30, 2021, it could have been required to settle its obligations under the agreement of the interest rate swaps in a net liability position by counterparty plus accrued interest for approximately $27.8 million.

Fair Value of Interest Rate Swaps

The Company’s valuation of the interest rate swaps is determined using widely accepted valuation techniques including discounted cash flow analysis on the expected cash flows of each derivative. This analysis reflects the contractual terms of the derivatives, including the period to maturity, and uses observable market-based inputs including interest rate curves.

The Company incorporates credit valuation adjustments to appropriately reflect both its own nonperformance risk and the respective counterparty’s nonperformance risk in the fair value measurements. In adjusting the fair value of its derivative contracts for the effect of nonperformance risk, the Company has considered the impact of netting and any applicable credit enhancements, such as collateral postings, thresholds, mutual puts, and guarantees.

Although the Company has determined that the majority of the inputs used to value its derivatives fall within Level 2 of the fair value hierarchy, the credit valuation adjustments associated with its derivatives utilize Level 3 inputs, such as estimates of current credit spreads to evaluate the likelihood of default by itself and its counterparties. However, as of June 30, 2021 and December 31, 2020, the Company has assessed the significance of the impact of the credit valuation adjustments on the overall valuation of its derivative positions and has determined that the credit valuation adjustments are not significant to the overall valuation of its derivatives. As a result, the Company has determined that its derivative valuations in their entirety are classified in Level 2 of the fair value hierarchy.

The following table summarizes the Company’s financial instruments that are accounted for at fair value on a recurring basis as of June 30, 2021 and December 31, 2020. 

			Fair Value Measurements as of June 30, 2021 Using
Balance Sheet Line Item (in thousands)	Fair Value June 30, 2021		Level 1		Level 2		Level 3
Interest rate swaps-Asset	$	1,704	$	—	$	1,704	$	—
Interest rate swaps-Liability	$	(28,795)	$	—	$	(28,795)	$	—

			Fair Value Measurements as of December 31, 2020 Using
Balance Sheet Line Item (in thousands)	Fair Value December 31, 2020		Level 1		Level 2		Level 3
Interest rate swaps-Asset	$	—	$	—	$	—	$	—
Interest rate swaps-Liability	$	(40,656)	$	—	$	(40,656)	$	—

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6. Equity

Preferred Stock

On March 1, 2021, the Company gave notice to redeem all 3,000,000 issued and outstanding shares of the 6.875% Series C Cumulative Redeemable Preferred Stock ("Series C Preferred Stock") on March 31, 2021. The Company redeemed the Series C Preferred Stock on March 31, 2021 at a cash redemption price of $25.00 per share, plus accrued and unpaid dividends to but excluding, the redemption date. The Company recognized a deemed dividend to the holders of the Series C Preferred Stock of approximately $2.6 million on the accompanying Consolidated Statements of Operations for the six months ended June 30, 2021 related to redemption costs and the original issuance costs of the Series C Preferred Stock.

The Company has no outstanding preferred stock issuances as of June 30, 2021.

The following tables summarize the dividends attributable to the Company’s outstanding preferred stock issuances during the three months ended March 31, 2021 and the year ended December 31, 2020.

Quarter Ended 2021	Declaration Date	Series C Preferred Stock Per Share		Payment Date
March 31	January 11, 2021	$	0.4296875	March 31, 2021
Total		$	0.4296875

Quarter Ended 2020	Declaration Date	Series C Preferred Stock Per Share		Payment Date
December 31	October 9, 2020	$	0.4296875	December 31, 2020
September 30	July 9, 2020	0.4296875		September 30, 2020
June 30	April 9, 2020	0.4296875		June 30, 2020
March 31	January 8, 2020	0.4296875		March 31, 2020
Total		$	1.7187500

Common Stock

The following table summarizes the terms of the Company’s at-the market (“ATM”) common stock offering program as of June 30, 2021.

ATM Common Stock Offering Program	Date	Maximum Aggregate Offering Price (in thousands)		Aggregate Common Stock Available as of June 30, 2021 (in thousands)
2019 $600 million ATM	February 14, 2019	$	600,000	$	204,023

The table below summarizes the activity under the ATM common stock offering program during the six months ended June 30, 2021 (in thousands, except share data). There was no activity under the ATM common stock offering program during the year ended December 31, 2020.

	Six months ended June 30, 2021
ATM Common Stock Offering Program(1)	Shares Sold	Weighted Average Price Per Share		Net Proceeds
2019 $600 million ATM	1,888,290	$	34.01	$	63,583
Total/weighted average	1,888,290	$	34.01	$	63,583

(1)Includes transactions settled during the period and excludes ATM issuances on a forward basis.

On April 5, 2021, the Company sold 1,446,760 shares on a forward basis under the ATM common stock offering program at a price of $34.56 per share, or $50.0 million, and $34.2144 per share net of sales agent fees. The Company does not initially receive any proceeds from the sale of shares on a forward basis. The Company may elect to cash settle or net share settle the forward sale agreement at any time through the scheduled maturity date of April 5, 2022.

Subsequent to June 30, 2021, the Company sold 1,719,849 shares under the ATM common stock offering program at a price of $37.98 per share, or $65.3 million, and $37.67 per share net of sales agent fees.

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The following tables summarize the dividends attributable to the Company’s outstanding shares of common stock that were declared during the six months ended June 30, 2021 and the year ended December 31, 2020.

Month Ended 2021	Declaration Date	Record Date	Per Share		Payment Date
June 30	April 12, 2021	June 30, 2021	$	0.120833	July 15, 2021
May 31	April 12, 2021	May 28, 2021	0.120833		June 15, 2021
April 30	April 12, 2021	April 30, 2021	0.120833		May 17, 2021
March 31	January 11, 2021	March 31, 2021	0.120833		April 15, 2021
February 28	January 11, 2021	February 26, 2021	0.120833		March 15, 2021
January 31	January 11, 2021	January 29, 2021	0.120833		February 16, 2021
Total			$	0.724998

Month Ended 2020	Declaration Date	Record Date	Per Share		Payment Date
December 31	October 9, 2020	December 31, 2020	$	0.12	January 15, 2021
November 30	October 9, 2020	November 30, 2020	0.12		December 15, 2020
October 31	October 9, 2020	October 30, 2020	0.12		November 16, 2020
September 30	July 9, 2020	September 30, 2020	0.12		October 15, 2020
August 31	July 9, 2020	August 31, 2020	0.12		September 15, 2020
July 31	July 9, 2020	July 31, 2020	0.12		August 17, 2020
June 30	April 9, 2020	June 30, 2020	0.12		July 15, 2020
May 31	April 9, 2020	May 29, 2020	0.12		June 15, 2020
April 30	April 9, 2020	April 30, 2020	0.12		May 15, 2020
March 31	January 8, 2020	March 31, 2020	0.12		April 15, 2020
February 29	January 8, 2020	February 28, 2020	0.12		March 16, 2020
January 31	January 8, 2020	January 31, 2020	0.12		February 18, 2020
Total			$	1.44

On July 13, 2021, the Company’s board of directors declared the common stock dividends for the months ending July 31, 2021, August 31, 2021, and September 30, 2021 at a monthly rate of $0.120833 per share of common stock.

Restricted Shares of Common Stock

Restricted shares of common stock granted on January 7, 2021 to certain employees of the Company, subject to the recipient’s continued employment, will vest over four years in equal installments on January 1 of each year beginning in 2022. Refer to Note 8 for a discussion of the restricted shares of common stock granted on January 7, 2021 pursuant to the 2018 performance units. The following table summarizes activity related to the Company’s unvested restricted shares of common stock for the six months ended June 30, 2021 and the year ended December 31, 2020.

Unvested Restricted Shares of Common Stock	Shares		Weighted Average Grant Date Fair Value per Share
Balance at December 31, 2019	193,045		$	24.38
Granted	75,419	(1)	$	31.60
Vested	(81,408)	(2)	$	23.46
Forfeited	(2,166)		$	26.92
Balance at December 31, 2020	184,890		$	27.70
Granted	90,304	(1)	$	29.77
Vested	(72,788)	(2)	$	26.76
Forfeited	(521)		$	28.06
Balance at June 30, 2021	201,885		$	28.96

(1)The fair value per share on the grant date of January 7, 2021, February 13, 2020, and January 8, 2020, was $29.77, $32.64, and $31.49, respectively.

(2)The Company repurchased and retired 25,840 and 34,117 restricted shares of common stock that vested during the six months ended June 30, 2021 and the year ended December 31, 2020, respectively.

The unrecognized compensation expense associated with the Company’s restricted shares of common stock at June 30, 2021 was approximately $4.4 million and is expected to be recognized over a weighted average period of approximately 2.6 years.

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The following table summarizes the fair value at vesting for the restricted shares of common stock that vested during the three and six months ended June 30, 2021 and 2020.

	Three months ended June 30,				Six months ended June 30,
Vested Restricted Shares of Common Stock	2021		2020		2021		2020
Vested restricted shares of common stock	—		—		72,788		78,010
Fair value of vested restricted shares of common stock (in thousands)	$	—	$	—	$	2,280	$	2,463

7. Noncontrolling Interest

The following table summarizes the activity for noncontrolling interest in the Company for the six months ended June 30, 2021 and the year ended December 31, 2020.

Noncontrolling Interest	LTIP Units	Other Common Units	Total Noncontrolling Common Units	Noncontrolling Interest
Balance at December 31, 2019	1,697,358	2,039,494	3,736,852	2.5	%
Granted/Issued	278,806	—	278,806	N/A
Forfeited	—	—	—	N/A
Conversions from LTIP units to Other Common Units	(283,741)	283,741	—	N/A
Redemptions from Other Common Units to common stock	—	(730,420)	(730,420)	N/A
Balance at December 31, 2020	1,692,423	1,592,815	3,285,238	2.0	%
Granted/Issued	405,844	—	405,844	N/A
Forfeited	—	—	—	N/A
Conversions from LTIP units to Other Common Units	(97,159)	97,159	—	N/A
Redemptions from Other Common Units to common stock	—	(119,334)	(119,334)	N/A
Balance at June 30, 2021	2,001,108	1,570,640	3,571,748	2.2	%

LTIP Units

LTIP units granted on January 7, 2021 to non-employee, independent directors, subject to the recipient’s continued service, will vest on January 1, 2022. LTIP units granted on January 7, 2021 to certain senior executive officers and senior employees, subject to the recipient’s continued employment, will vest quarterly over four years, with the first vesting date having been March 31, 2021. Refer to Note 8 for a discussion of the LTIP units granted on January 7, 2021 pursuant to the 2018 performance units.

The fair value of the LTIP units at the date of grant was determined by a lattice-binomial option-pricing model based on a Monte Carlo simulation. The fair value of the LTIP units are based on Level 3 inputs and are non-recurring fair value measurements. The following table summarizes the assumptions used in valuing such LTIP units granted during the six months ended June 30, 2021 (excluding those LTIP units granted pursuant to the 2018 performance units; refer to Note 8 for details).

LTIP Units	Assumptions
Grant date	January 7, 2021
Expected term (years)	10
Expected volatility	34.0		%
Expected dividend yield	5.0		%
Risk-free interest rate	0.229		%
Fair value of LTIP units at issuance (in thousands)	$	4,316
LTIP units at issuance	153,430
Fair value unit price per LTIP unit at issuance	$	28.13

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The following table summarizes activity related to the Company’s unvested LTIP units for the six months ended June 30, 2021 and the year ended December 31, 2020.

Unvested LTIP Units	LTIP Units	Weighted Average Grant Date Fair Value per Share
Balance at December 31, 2019	227,348	$	23.37
Granted	278,806	$	29.47
Vested	(294,706)	$	26.87
Forfeited	—	$	—
Balance at December 31, 2020	211,448	$	26.54
Granted	405,844	$	28.13
Vested	(228,821)	$	27.33
Forfeited	—	$	—
Balance at June 30, 2021	388,471	$	27.74

The unrecognized compensation expense associated with the Company’s LTIP units at June 30, 2021 was approximately $4.1 million and is expected to be recognized over a weighted average period of approximately 2.3 years.

The following table summarizes the fair value at vesting for the LTIP units that vested during the three and six months ended June 30, 2021 and 2020.

	Three months ended June 30,				Six months ended June 30,
Vested LTIP units	2021		2020		2021		2020
Vested LTIP units	45,335		43,958		228,821		174,145
Fair value of vested LTIP units (in thousands)	$	1,686	$	1,213	$	7,369	$	5,074

8. Equity Incentive Plan

On January 7, 2021, the Company granted performance units approved by the compensation committee of the board of directors under the 2011 Plan to certain key employees of the Company. The terms of the performance units granted on January 7, 2021 are substantially the same as the terms of the performance units granted on January 8, 2020, except that the measuring period commenced on January 1, 2021 and ends on December 31, 2023.

The fair value of the performance units at the date of grant was determined by a lattice-binomial option-pricing model based on a Monte Carlo simulation. The fair value of the performance units is based on Level 3 inputs and are non-recurring fair value measurements. The performance unit equity compensation expense is recognized ratably from the grant date into earnings over the vesting period. The following table summarizes the assumptions used in valuing the performance units granted during the six months ended June 30, 2021.

Performance Units	Assumptions
Grant date	January 7, 2021
Expected volatility	34.4		%
Expected dividend yield	5.0		%
Risk-free interest rate	0.2271		%
Fair value of performance units grant (in thousands)	$	5,522

On December 31, 2020, the measuring period pursuant to the 2018 performance units concluded, and it was determined that the Company’s total stockholder return exceeded the threshold percentage and return hurdle. The compensation committee of the board of directors approved the issuance of 127,671 vested LTIP units and 44,591 vested shares of common stock to the participants (of which 17,731 shares of common stock were repurchased and retired), which were issued on January 7, 2021. The compensation committee of the board of directors also approved the issuance of 124,743 LTIP units and 6,352 restricted shares of common stock that will vest in one year on December 31, 2021, which were issued on January 7, 2021.

The unrecognized compensation expense associated with the Company’s performance units at June 30, 2021 was approximately $8.5 million and is expected to be recognized over a weighted average period of approximately 1.9 years.

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Non-cash Compensation Expense

The following table summarizes the amount recorded in general and administrative expenses in the accompanying Consolidated Statements of Operations for the amortization of restricted shares of common stock, LTIP units, performance units, and the Company’s director compensation for the three and six months ended June 30, 2021 and 2020.

	Three months ended June 30,				Six months ended June 30,
Non-Cash Compensation Expense (in thousands)	2021		2020		2021		2020
Restricted shares of common stock	$	586	$	481	$	1,237	$	948
LTIP units	2,346		978		4,754		1,942
Performance units	1,484		1,341		2,922		2,648
Director compensation (1)	123		138		241		252
Total non-cash compensation expense	$	4,539	$	2,938	$	9,154	$	5,790

(1)All of the Company’s independent directors elected to receive shares of common stock in lieu of cash for their service during the three and six months ended June 30, 2021 and 2020. The number of shares of common stock granted is calculated based on the trailing ten days average common stock price ending on the third business day preceding the grant date.

9. Leases

Lessor Leases

The Company has operating leases in which it is the lessor for its rental property. Certain leases contain variable lease payments based upon changes in the Consumer Price Index (“CPI”). Billings for real estate taxes and other expenses are also considered to be variable lease payments. Certain leases contain options to renew or terminate the lease, and options for the lessee to purchase the rental property, all of which are predominately at the sole discretion of the lessee.

The following table summarizes the components of rental income recognized during the three and six months ended June 30, 2021 and 2020 included in the accompanying Consolidated Statements of Operations.

	Three months ended June 30,				Six months ended June 30,
Rental Income (in thousands)	2021		2020		2021		2020
Fixed lease payments	$	103,778	$	91,234	$	204,957	$	181,630
Variable lease payments	29,639		25,588		58,883		50,594
Straight-line rental income	4,718		1,823		9,600		5,750
Net decrease to rental income related to above and below market lease amortization	(330)		(1,174)		(1,810)		(2,164)
Total rental income	$	137,805	$	117,471	$	271,630	$	235,810

The Company evaluates its operating leases to determine if it is probable it will collect substantially all of the lessee's remaining lease payments under the lease term. For those that are not probable of collection, the Company converts to the cash basis of accounting. If the Company subsequently determines that it is probable it will collect substantially all of the lessee's remaining lease payments under the lease term, the Company will reinstate the accrued rent balance adjusting for the amount related to the period when the lease was accounted for on a cash basis. During the three and six months ended June 30, 2021, this resulted in a net increase of rental income of approximately $0 and $0.1 million for the three and six months ended June 30, 2021 due to the reversal of a net accrued rent liability and tenants converting from cash basis accounting to accrual basis accounting. Additionally, there was $0.3 million and $1.7 million of contractual rental income not received from cash basis tenants partially offset by $0.1 million and $1.3 million of previously unrecognized rental income payments received from tenants under the cash basis of accounting during the three and six months ended June 30, 2021. During the three and six months ended June 30, 2020, the Company converted to the cash basis of accounting for certain leases which resulted in a reduction of rental income of approximately $1.2 million and $0.9 million for three and six months ended June 30, 2020, due to the reversal of accrued rent. Additionally, there was $0.6 million and $0.6 million of contractual rental income that was not recognized for payments that were not received from the tenants for the three and six months ended June 30, 2020.

As of June 30, 2021 and December 31, 2020, the Company had accrued rental income of approximately $68.7 million and $60.0 million, respectively, included in tenant accounts receivable on the accompanying Consolidated Balance Sheets.

As of June 30, 2021 and December 31, 2020, the Company had approximately $29.8 million and $30.1 million, respectively, of total lease security deposits available in the form of existing letters of credit, which are not reflected on the accompanying

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Consolidated Balance Sheets. As of June 30, 2021 and December 31, 2020, the Company had approximately $0.7 million and $0.7 million, respectively, of lease security deposits available in cash, which are included in restricted cash on the accompanying Consolidated Balance Sheets. The Company’s remaining lease security deposits are commingled in cash and cash equivalents. These funds may be used to settle tenant accounts receivables in the event of a default under the related lease. As of June 30, 2021 and December 31, 2020, the Company’s total liability associated with these lease security deposits was approximately $11.6 million and $11.0 million, respectively, and is included in tenant prepaid rent and security deposits on the accompanying Consolidated Balance Sheets.

The Company estimates that billings for real estate taxes, which are the responsibility of certain tenants under the terms of their leases and are not reflected on the Company’s consolidated financial statements, was approximately $5.3 million, $10.4 million, $4.9 million and $9.7 million for the three and six months ended June 30, 2021 and 2020, respectively. These amounts would have been the maximum real estate tax expense of the Company, excluding any penalties or interest, had the tenants not met their contractual obligations for these periods.

The following table summarizes the maturity of fixed lease payments under the Company’s leases as of June 30, 2021.

Year	Maturity of Fixed Lease Payments (in thousands)
Remainder of 2021	$	208,202
2022	$	396,672
2023	$	355,331
2024	$	304,926
2025	$	251,700
Thereafter	$	942,803

Lessee Leases

The Company has operating leases in which it is the lessee for ground leases and its corporate office lease. These leases have remaining lease terms of approximately 5.0 years to 48.4 years. Certain ground leases contain options to extend the leases for ten years to 20 years, all of which are reasonably certain to be exercised, and are included in the computation of the Company’s right-of-use assets and operating lease liabilities.

The following table summarizes supplemental information related to operating lease right-of-use assets and operating lease liabilities recognized in the Company’s Consolidated Balance Sheets as of June 30, 2021 and December 31, 2020.

Operating Lease Term and Discount Rate	June 30, 2021		December 31, 2020
Weighted average remaining lease term (years)	29.6		29.9
Weighted average discount rate	6.8	%	6.8	%

The following table summarizes the operating lease cost recognized during the three and six months ended June 30, 2021 and 2020 included in the Company’s Consolidated Statements of Operations.

	Three months ended June 30,				Six months ended June 30,
Operating Lease Cost (in thousands)	2021		2020		2021		2020
Operating lease cost included in property expense attributable to ground leases	$	417	$	331	$	834	$	662
Operating lease cost included in general and administrative expense attributable to corporate office lease	429		423		858		741
Total operating lease cost	$	846	$	754	$	1,692	$	1,403

The following table summarizes supplemental cash flow information related to operating leases recognized during the six months ended June 30, 2021 and 2020 in the Company’s Consolidated Statements of Cash Flows.

	Six months ended June 30,
Operating Leases (in thousands)	2021		2020
Cash paid for amounts included in the measurement of lease liabilities (operating cash flows)	$	952	$	1,143
Right-of-use assets obtained in exchange for new lease liabilities	$	—	$	7,718

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The following table summarizes the maturity of operating lease liabilities under the Company’s ground leases and corporate office lease as of June 30, 2021.

Year	Maturity of Operating Lease Liabilities(1) (in thousands)
Remainder of 2021	$	1,357
2022	3,188
2023	3,248
2024	3,291
2025	3,336
Thereafter	62,365
Total lease payments	76,785
Less: Imputed interest	(48,947)
Present value of operating lease liabilities	$	27,838

(1)Operating lease liabilities do not include estimates of CPI rent changes required by certain ground lease agreements. Therefore, actual payments may differ than those presented.

10. Earnings Per Share

During the three and six months ended June 30, 2021 and 2020, there were 202,171, 200,501, 189,895 and 185,821, respectively, of unvested restricted shares of common stock on a weighted average basis that were considered participating securities.

The following table reconciles the numerators and denominators in the computation of basic and diluted earnings per common share for the three and six months ended June 30, 2021 and 2020.

	Three months ended June 30,				Six months ended June 30,
Earnings Per Share (in thousands, except per share data)	2021		2020		2021		2020
Numerator
Net income attributable to common stockholders	$	32,576	$	17,552	$	53,507	$	79,635
Denominator
Weighted average common shares outstanding — basic	159,736		148,663		159,086		148,116
Effect of dilutive securities(1)
Share-based compensation	584		364		467		225
Shares issuable under forward sales agreements	1,047		—		696		—
Weighted average common shares outstanding — diluted	161,367		149,027		160,249		148,341
Net income per share — basic and diluted
Net income per share attributable to common stockholders — basic	$	0.20	$	0.12	$	0.34	$	0.54
Net income per share attributable to common stockholders — diluted	$	0.20	$	0.12	$	0.33	$	0.54

(1)During the three and six months ended June 30, 2021 and 2020, there were approximately 202, 201, 190 and 186, unvested shares of restricted common stock, respectively, on a weighted average basis that were not included in the computation of diluted earnings per share because the allocation of income under the two-class method was more dilutive.

11. Commitments and Contingencies

The Company is subject to various legal proceedings and claims that arise in the ordinary course of business. These matters are generally covered by insurance subject to deductible requirements. Management believes that the ultimate settlement of these actions will not have a material adverse effect on the Company’s financial position, results of operations, or cash flows.

The Company has letters of credit of approximately $2.9 million as of June 30, 2021 related to construction projects and certain other agreements.

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12. Subsequent Events

The following non-recognized subsequent events were noted.

On July 8, 2021, the Company entered into a note purchase agreement for the future private placement by the Operating Partnership of $275.0 million senior unsecured notes, maturing September 29, 2031, with a fixed annual interest rate of 2.80%, and $50.0 million senior unsecured notes, maturing September 28, 2033, with a fixed annual interest rate of 2.95%. The notes are expected to be issued on or around September 28, 2021, subject to conditions.

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Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations

You should read the following discussion with the financial statements and related notes included elsewhere in Item 1 of this report and the audited financial statements and related notes thereto included in our most recent Annual Report on Form 10-K.

As used herein, except where the context otherwise requires, “Company,” “we,” “our” and “us,” refer to STAG Industrial, Inc. and our consolidated subsidiaries and partnerships, including our operating partnership, STAG Industrial Operating Partnership, L.P. (the “Operating Partnership”). 

Forward-Looking Statements

This report contains “forward-looking statements” within the meaning of the safe harbor from civil liability provided for such statements by the Private Securities Litigation Reform Act of 1995 (set forth in Section 27A of the Securities Act of 1933, as amended (the “Securities Act”), and Section 21E of the Securities Exchange Act of 1934, as amended (the “Exchange Act”)). You can identify forward-looking statements by the use of words such as “anticipates,” “believes,” “estimates,” “expects,” “intends,” “may,” “plans,” “projects,” “seeks,” “should,” “will,” and variations of such words or similar expressions. Forward-looking statements in this report include, among others, statements about our future financial condition, results of operations, capitalization rates on future acquisitions, our business strategy and objectives, including our acquisition strategy, occupancy and leasing rates and trends, and expected liquidity needs and sources (including capital expenditures and the ability to obtain financing or raise capital). Our forward-looking statements reflect our current views about our plans, intentions, expectations, strategies and prospects, which are based on the information currently available to us and on assumptions we have made. Although we believe that our plans, intentions, expectations, strategies and prospects as reflected in or suggested by our forward-looking statements are reasonable, we can give no assurance that our plans, intentions, expectations, strategies or prospects will be attained or achieved and you should not place undue reliance on these forward-looking statements. Furthermore, actual results may differ materially from those described in the forward-looking statements and may be affected by a variety of risks and factors including, without limitation:

•the factors included in our Annual Report on Form 10-K for the year ended December 31, 2020, as updated in our Quarterly Report on Form 10-Q for the quarter ended March 31, 2021, including those set forth under the headings “Business,” “Risk Factors,” and “Management’s Discussion and Analysis of Financial Condition and Results of Operations;”

•the ongoing adverse effects of the public health crisis of the novel coronavirus disease (“COVID-19”) pandemic, or any future pandemic, epidemic or outbreak of infectious disease, on the financial condition, results of operations, cash flows and performance of the Company and its tenants, the real estate market and the global economy and financial markets;

•our ability to raise equity capital on attractive terms;

•the competitive environment in which we operate;

•real estate risks, including fluctuations in real estate values, the general economic climate in local markets and competition for tenants in such markets, and the repurposing or redevelopment of retail properties into industrial properties (in part or whole);

•decreased rental rates or increased vacancy rates;

•potential defaults (including bankruptcies or insolvency) on or non-renewal of leases by tenants;

•acquisition risks, including our ability to identify and complete accretive acquisitions and/or failure of such acquisitions to perform in accordance with projections;

•the timing of acquisitions and dispositions;

•technological developments, particularly those affecting supply chains and logistics;

•potential natural disasters, epidemics, pandemics, and other potentially catastrophic events such as acts of war and/or terrorism;

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•international, national, regional and local economic conditions;

•the general level of interest rates and currencies;

•potential changes in the law or governmental regulations and interpretations of those laws and regulations, including changes in real estate and zoning laws or real estate investment trust (“REIT”) or corporate income tax laws, and potential increases in real property tax rates; 

•financing risks, including the risks that our cash flows from operations may be insufficient to meet required payments of principal and interest and we may be unable to refinance our existing debt upon maturity or obtain new financing on attractive terms or at all; 

•credit risk in the event of non-performance by the counterparties to the interest rate swaps and revolving and unfunded debt;

•how and when pending forward equity sales may settle;

•lack of or insufficient amounts of insurance;

•our ability to maintain our qualification as a REIT;

•our ability to retain key personnel; 

•litigation, including costs associated with prosecuting or defending claims and any adverse outcomes; and

•possible environmental liabilities, including costs, fines or penalties that may be incurred due to necessary remediation of contamination of properties presently owned or previously owned by us.

Any forward-looking statement speaks only as of the date on which it is made. New risks and uncertainties arise over time, and it is not possible for us to predict those events or how they may affect us. Moreover, you should interpret many of the risks identified in this report, as well as the risks set forth above, as being heightened as a result of the ongoing and numerous adverse impacts of the COVID-19 pandemic. Except as required by law, we are not obligated to, and do not intend to, update or revise any forward-looking statements, whether as a result of new information, future events or otherwise.

Certain Definitions

In this report:

We define “GAAP” as generally accepted accounting principles in the United States.

We define “total annualized base rental revenue” as the contractual monthly base rent as of June 30, 2021 (which differs from rent calculated in accordance with GAAP) multiplied by 12. If a tenant is in a free rent period as of June 30, 2021, the total annualized base rental revenue is calculated based on the first contractual monthly base rent amount multiplied by 12.

We define “occupancy rate” as the percentage of total leasable square footage for which either revenue recognition has commenced in accordance with GAAP or the lease term has commenced as of the close of the reporting period, whichever occurs earlier.

We define the “Value Add Portfolio” as properties that meet any of the following criteria: (i) less than 75% occupied as of the acquisition date; (ii) will be less than 75% occupied due to known move-outs within two years of the acquisition date; (iii) out of service with significant physical renovation of the asset; or (iv) development.

We define “Stabilization” for properties under development or being redeveloped as the earlier of achieving 90% occupancy or 12 months after completion. With respect to properties acquired and immediately added to the Value Add Portfolio, (i) if acquired with less than 75% occupancy as of the acquisition date, Stabilization will occur upon the earlier of achieving 90% occupancy or 12 months from the acquisition date; or (ii) if acquired and will be less than 75% occupied due to known move-

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outs within two years of the acquisition date, Stabilization will occur upon the earlier of achieving 90% occupancy after the known move-outs have occurred or 12 months after the known move-outs have occurred.

We define the “Operating Portfolio” as all warehouse and light manufacturing assets that were acquired stabilized or have achieved Stabilization. The Operating Portfolio excludes non-core flex/office assets, assets contained in the Value Add Portfolio, and assets classified as held for sale.

We define a “Comparable Lease” as a lease in the same space with a similar lease structure as compared to the previous in-place lease, excluding new leases for space that was not occupied under our ownership.

We define “SL Rent Change” as the percentage change in the average monthly base rent over the term of the lease that commenced during the period compared to the Comparable Lease for assets included in the Operating Portfolio. Rent under gross or similar type leases are converted to a net rent based on an estimate of the applicable recoverable expenses, and this calculation excludes the impact of any holdover rent.

We define “Cash Rent Change” as the percentage change in the base rent of the lease commenced during the period compared to the base rent of the Comparable Lease for assets included in the Operating Portfolio. The calculation compares the first base rent payment due after the lease commencement date compared to the base rent of the last monthly payment due prior to the termination of the lease, excluding holdover rent. Rent under gross or similar type leases are converted to a net rent based on an estimate of the applicable recoverable expenses.

We define “New Lease” as any lease that is signed for an initial term equal to or greater than 12 months for any vacant space, including a lease signed by a new tenant or an existing tenant that is expanding into new (additional) space.

We define “Renewal Lease” as a lease signed by an existing tenant to extend the term for 12 months or more, including (i) a renewal of the same space as the current lease at lease expiration, (ii) a renewal of only a portion of the current space at lease expiration, or (iii) an early renewal or workout, which ultimately does extend the original term for 12 months or more.

Overview

We are a REIT focused on the acquisition, ownership, and operation of single-tenant, industrial properties throughout the United States. We are a Maryland corporation and our common stock is publicly traded on the New York Stock Exchange under the symbol “STAG.”

We are organized and conduct our operations to qualify as a REIT under Sections 856 through 860 of the Internal Revenue Code of 1986, as amended, and generally are not subject to federal income tax to the extent we currently distribute our income to our stockholders and maintain our qualification as a REIT. We remain subject to state and local taxes on our income and property and to U.S. federal income and excise taxes on our undistributed income.

Factors That May Influence Future Results of Operations

Our ability to increase revenues or cash flow will depend in part on our (i) external growth, specifically acquisition activity, and (ii) internal growth, specifically occupancy and rental rates on our portfolio. A variety of other factors, including those noted below, also affect our future results of operations.

COVID-19 Pandemic

Since March 2020, the COVID-19 pandemic has severely harmed global economic activity and caused significant volatility and negative pressure in financial markets. The global impact of the pandemic continues to evolve and many countries, including the United States, continue to react by instituting quarantines, mandating business and school closures and restricting travel. As a result, the COVID-19 pandemic is negatively impacting almost every industry, including the real estate industry and the industries of our tenants, directly or indirectly. The rapid development and fluidity of the COVID-19 pandemic precludes any prediction as to the ultimate adverse impact the pandemic may have on our business, financial condition, results of operations and cash flows.

We did not incur significant disruptions from the COVID-19 pandemic during the three and six months ended June 30, 2021. In addition, we did not enter into any rent deferral agreements during the three and six months ended June 30, 2021. We will continue to evaluate tenant rent relief requests on an individual basis, considering a number of factors. Not all tenant requests will ultimately result in modified agreements, nor are we foregoing our contractual rights under our lease agreements.

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The COVID-19 pandemic or a future pandemic, epidemic or outbreak of infectious disease affecting states or regions in which we or our tenants operate could have material and adverse effects on our business, financial condition, results of operations and cash flows due to, among other factors: health or other government authorities requiring the closure of offices or other businesses or instituting quarantines of personnel as the result of, or in order to avoid, exposure to a contagious disease; disruption in supply and delivery chains; a general decline in business activity and demand for real estate; reduced economic activity, general economic decline or recession, which may impact our tenants’ businesses, financial condition and liquidity and may cause one or more of our tenants to be unable to make rent payments to us timely, or at all, or to otherwise seek modifications of lease obligations; difficulty accessing debt and equity capital on attractive terms, or at all, and a severe disruption and instability in the global financial markets or deteriorations in credit and financing conditions, which may affect our access to capital necessary to fund business operations or address maturing liabilities on a timely basis; and the potential negative impact on the health of our personnel, particularly if a significant number of our employees are impacted, which would result in a deterioration in our ability to ensure business continuity during a disruption.

The extent to which the COVID-19 pandemic or any other pandemic, epidemic or disease impacts our operations and those of our tenants will depend on future developments, which are highly uncertain and cannot be predicted with confidence, including the scope, severity and duration of the pandemic, the actions taken to contain the pandemic or mitigate its impact, and the direct and indirect economic effects of the pandemic and containment measures, among others. Nevertheless, the COVID-19 pandemic (or a future pandemic, epidemic or disease) presents material uncertainty and risk with respect to our business, financial condition, results of operations and cash flows.

Outlook

Our business is affected by the uncertainty regarding the current COVID-19 pandemic, the effectiveness of policies introduced to neutralize the disease, and the impact of those policies on economic activity. In June 2020, the National Bureau of Economic Research announced that the United States entered into a recession in February 2020. More recent economic measurements show that the U.S. economy is recovering. The ultimate shape of the recovery will depend on many factors, including the length and severity of the COVID-19 pandemic. While there has been a negative impact to our tenants, we believe we will continue to benefit from having a well-diversified portfolio across various markets, tenant industries, and lease terms. Additionally, we believe that the COVID-19 pandemic is accelerating a number of trends that positively impact industrial demand.

Over the course of the COVID-19 pandemic, the U.S. federal and state governments, as well as the Federal Reserve, responded to the profoundly uncertain outlook with a series of policies to ease the economic burden of COVID-19 closures on businesses and individuals. In March 2021, the latest major U.S. congressional policy action known as the American Rescue Plan, allocated $1.9 trillion in federal aid focused on individuals and state and local governments. The Federal Reserve continues to be accommodative since it completed two emergency federal funds rate cuts in March 2020 to a range between 0% to 0.25%. Additionally, since entering office in January 2021, the Biden administration and health organizations are heavily focused on curbing the spread of COVID-19 through vaccinations and have made progress toward reaching a large portion of the population. We expect supportive fiscal and monetary policy to continue as needed.

We believe that the current economic environment, while volatile, will provide us with an opportunity to demonstrate the diversification of our portfolio. Specifically, we believe our existing portfolio should benefit from competitive rental rates and strong occupancy. In addition to our diversified portfolio, we believe that certain characteristics of our business and capital structure should position us well in an uncertain environment, including the fact that we have minimal floating rate debt exposure (taking into account our hedging activities) and strong liquidity and access to capital, and that many of our competitors for the assets we purchase tend to be smaller local and regional investors who are likely to be more heavily impacted by interest rates and availability of capital.

Due to the COVID-19 pandemic, we expect acceleration in a number of industrial specific trends to support stronger long-term demand, including:

•the rise of e-commerce (as compared to the traditional retail store distribution model) and the concomitant demand by e-commerce industry participants for well-located, functional distribution space;

•the increasing attractiveness of the United States as a manufacturing and distribution location because of the size of the U.S. consumer market, an increase in overseas labor costs, a desire for greater supply chain resilience and redundancy and the overall cost of supplying and shipping goods (i.e. the shortening and fattening of the supply chain); and

•the overall quality of the transportation infrastructure in the United States.

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Our portfolio continues to benefit from historically low availability throughout the national industrial market. The COVID-19 pandemic has caused both positive and negative impacts at varying levels across different industries and geographies. Ultimately, the acceleration in e-commerce brought on by the COVID-19 pandemic, actions taken by federal and state governments and the Federal Reserve in response to the pandemic, and the recent economic recovery has helped industrial space demand remain strong. We believe that the diversification of our portfolio by market, tenant industry, and tenant credit will prove to be a strength in this environment. Industrial development continues to be concentrated in the larger primary markets, and after a brief deceleration it has returned to pre-COVID-19 pandemic levels. We will continue to monitor the supply and demand fundamentals for industrial real estate and assess its impact on our business.

Conditions in Our Markets

The buildings in our portfolio are located in markets throughout the United States. Positive or negative changes in economic or other conditions, new supply, adverse weather conditions, natural disasters, epidemics, and other factors in these markets may affect our overall performance.

Rental Income

We receive income primarily in the form of rental income from the tenants who occupy our buildings. The amount of rental income generated by the buildings in our portfolio depends principally on occupancy and rental rates. As of June 30, 2021, our Operating Portfolio was approximately 97.2% leased and our SL Rent Change on New Leases and Renewal Leases in our Operating Portfolio together grew approximately 15.1% and 16.5% during the three and six months ended June 30, 2021, respectively. Our Cash Rent Change on New Leases and Renewal Leases in our Operating Portfolio together grew approximately 8.1% and 8.7% during the three and six months ended June 30, 2021.

Future economic downturns or regional downturns affecting our submarkets that impair our ability to renew or re-lease space and the ability of our tenants to fulfill their lease commitments, as in the case of tenant bankruptcies, including those brought on by the COVID-19 pandemic, could adversely affect our ability to maintain or increase rental rates at our buildings. Our ability to lease our properties and the attendant rental rate is dependent upon, among other things, (i) the overall economy, (ii) the supply/demand dynamic in our markets, (iii) the quality of our properties, including age, clear height, and configuration, and (iv) our tenants’ ability to meet their contractual obligations to us.

The following table summarizes our Operating Portfolio leases that commenced during the three and six months ended June 30, 2021. Certain leases contain rental concessions; any such rental concessions are accounted for on a straight-line basis over the term of the lease.

Operating Portfolio	Square Feet	Cash Basis Rent Per Square Foot		SL Rent Per Square Foot		Total Costs Per Square Foot(1)		Cash Rent Change		SL Rent Change		Weighted Average Lease Term(2) (years)	Rental Concessions per Square Foot(3)
Three months ended June 30, 2021
New Leases	1,128,576	$	4.16	$	4.33	$	1.83	7.3	%	13.6	%	7.1	$	0.65
Renewal Leases	2,732,292	$	4.14	$	4.36	$	1.10	8.4	%	15.7	%	6.4	$	—
Total/weighted average	3,860,868	$	4.15	$	4.35	$	1.32	8.1	%	15.1	%	6.6	$	0.19
Six months ended June 30, 2021
New Leases	1,468,264	$	4.10	$	4.32	$	2.25	7.5	%	15.3	%	7.2	$	0.60
Renewal Leases	4,984,685	$	4.28	$	4.49	$	1.12	9.0	%	16.9	%	5.8	$	0.07
Total/weighted average	6,452,949	$	4.24	$	4.45	$	1.38	8.7	%	16.5	%	6.1	$	0.19

(1)We define Total Costs as the costs for improvements of vacant and renewal spaces, as well as the contingent-based legal fees and commissions for leasing transactions. Total Costs per square foot represent the total costs expected to be incurred on the leases that commenced during the period and do not reflect actual expenditures for the period.

(2)We define weighted average lease term as the contractual lease term in years, assuming that tenants exercise no renewal options, purchase options, or early termination rights, weighted by square footage.

(3)Represents the total rental concessions for the entire lease term.

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Additionally, for the three and six months ended June 30, 2021, leases commenced totaling 32,864 and 139,064 square feet, respectively, related to the Value Add Portfolio and first generation leasing and are excluded from the Operating Portfolio statistics above.

Property Operating Expenses

Our property operating expenses generally consist of utilities, real estate taxes, management fees, insurance, and site repair and maintenance costs. For the majority of our tenants, our property operating expenses are controlled, in part, by the triple net provisions in tenant leases. In our triple net leases, the tenant is responsible for all aspects of and costs related to the building and its operation during the lease term, including utilities, taxes, insurance and maintenance costs, but typically excluding roof and building structure. However, we also have modified gross leases and gross leases in our building portfolio. The terms of those leases vary and on some occasions we may absorb certain building related expenses of our tenants. In our modified gross leases, we are responsible for some building related expenses during the lease term, but the cost of most of the expenses is passed through to the tenant for reimbursement to us. In our gross leases, we are responsible for all costs related to the building and its operation during the lease term. Our overall performance will be affected by the extent to which we are able to pass-through property operating expenses to our tenants.

Scheduled Lease Expirations

Our ability to re-lease space subject to expiring leases will impact our results of operations and is affected by economic and competitive conditions in our markets and by the desirability of our individual buildings. Leases that comprise approximately 9.2% of our annualized base rental revenue will expire during the period from July 1, 2021 to June 30, 2022, excluding month-to-month leases. We assume, based upon internal renewal probability estimates that some of our tenants will renew and others will vacate and the associated space will be re-let subject to downtime assumptions. Using the aforementioned assumptions, we expect that the rental rates on the respective new leases will generally be the same as the rates under existing leases expiring during the period July 1, 2021 to June 30, 2022, thereby resulting in approximately the same revenue from the same space.

The following table summarizes lease expirations for leases in place as of June 30, 2021, plus available space, for each of the ten calendar years beginning with 2021 and thereafter in our portfolio. The information in the table assumes that tenants exercise no renewal options and no early termination rights.

Lease Expiration Year	Number of Leases Expiring	Total Rentable Square Feet	% of Total Occupied Square Feet		Total Annualized Base Rental  Revenue (in thousands)		% of Total Annualized Base Rental Revenue
Available	—	3,229,878	—		—		—
Month-to-month leases	4	231,953	0.2	%	$	1,110	0.2	%
Remainder of 2021	22	4,345,132	4.5	%	20,023		4.5	%
2022	78	8,667,176	9.0	%	39,282		8.8	%
2023	95	13,325,167	13.8	%	56,558		12.7	%
2024	81	12,294,728	12.7	%	55,844		12.6	%
2025	67	11,148,944	11.5	%	49,643		11.2	%
2026	66	10,475,464	10.8	%	50,530		11.4	%
2027	39	6,914,427	7.1	%	31,044		7.0	%
2028	27	4,929,994	5.1	%	21,854		4.9	%
2029	26	5,890,825	6.1	%	27,549		6.2	%
2030	23	4,111,782	4.2	%	21,371		4.8	%
Thereafter	57	14,508,634	15.0	%	69,900		15.7	%
Total	585	100,074,104	100.0	%	$	444,708	100.0	%

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Portfolio Summary

The following table summarizes information relating to diversification by building type in our portfolio as of June 30, 2021.

		Square Footage					Annualized Base Rental Revenue
Building Type	Number of Buildings	Amount	%		Occupancy Rate		Amount (in thousands)		%
Warehouse/Distribution	418	90,960,967	90.9	%	97.0	%	$	400,040	90.0	%
Light Manufacturing	73	8,379,905	8.4	%	98.7	%	42,446		9.5	%
Total Operating Portfolio/weighted average	491	99,340,872	99.3	%	97.2	%	$	442,486	99.5	%
Value Add/Other	3	331,537	0.3	%	53.4	%	825		0.2	%
Flex/Office	7	401,695	0.4	%	37.4	%	1,397		0.3	%
Total portfolio/weighted average	501	100,074,104	100.0	%	96.8	%	$	444,708	100.0	%

Portfolio Acquisitions

The following table summarizes our acquisitions during the three and six months ended June 30, 2021.

Market (1)	Date Acquired	Square Feet	Number of Buildings	Purchase Price (in thousands)
Omaha/Council Bluffs, NE-IA	January 21, 2021	370,000	1	$	24,922
Minneapolis/St Paul, MN	February 24, 2021	80,655	1	10,174
Long Island, NY	February 25, 2021	64,224	1	8,516
Sacramento, CA	February 25, 2021	267,284	1	25,917
Little Rock/N Little Rock	March 1, 2021	300,160	1	24,317
Cleveland, OH	March 18, 2021	170,000	1	6,382
Three months ended March 31, 2021		1,252,323	6	100,228
Indianapolis, IN	May 17, 2021	154,440	1	13,655
Baltimore, MD	May 17, 2021	46,851	1	6,228
Detroit, MI	June 1, 2021	248,040	1	23,786
Green Bay, WI	June 7, 2021	152,000	1	7,249
Phoenix, AZ	June 14, 2021	41,504	1	8,670
Cleveland, OH	June 17, 2021	179,577	1	19,602
Reno/Sparks, NV	June 30, 2021	183,435	1	13,892
Washington, DC	June 30, 2021	193,420	1	17,521
Stockton/Modesto, CA	June 30, 2021	150,000	1	16,118
Three months ended June 30, 2021		1,349,267	9	126,721
Six months ended June 30, 2021		2,601,590	15	$	226,949

(1) As defined by CoStar Realty Information Inc (“CoStar”). If the building is located outside of a CoStar defined market, the city and state is reflected.

Portfolio Dispositions

During the six months ended June 30, 2021, we sold six buildings comprised of approximately 0.9 million rentable square feet with a net book value of approximately $27.2 million to third parties. Net proceeds from the sales of rental property were approximately $39.6 million and we recognized the full gain on the sales of rental property, net, of approximately $12.4 million for the six months ended June 30, 2021.

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Geographic Diversification

The following table summarizes information about the 20 largest markets in our portfolio based on total annualized base rental revenue as of June 30, 2021.

Top 20 Markets (1)	% of Total Annualized Base Rental Revenue
Chicago, IL	7.0	%
Philadelphia, PA	6.0	%
Greenville/Spartanburg, SC	5.1	%
Pittsburgh, PA	4.7	%
Detroit, MI	4.5	%
Milwaukee/Madison, WI	4.4	%
Minneapolis/St Paul, MN	4.2	%
Columbus, OH	3.8	%
Houston, TX	3.3	%
Charlotte, NC	2.9	%
West Michigan, MI	2.4	%
Boston, MA	2.3	%
Indianapolis, IN	2.3	%
El Paso, TX	2.1	%
Cincinnati/Dayton, OH	2.0	%
Cleveland, OH	1.9	%
Raleigh/Durham, NC	1.6	%
Columbia, SC	1.6	%
Westchester/So Connecticut, CT/NY	1.6	%
Kansas City, MO	1.5	%
Total	65.2	%

(1) As defined by CoStar.

Industry Diversification

The following table summarizes information about the 20 largest tenant industries in our portfolio based on total annualized base rental revenue as of June 30, 2021.

Top 20 Tenant Industries (1)	% of Total Annualized Base Rental Revenue
Air Freight & Logistics	10.9	%
Containers & Packaging	9.0	%
Auto Components	7.8	%
Internet & Direct Mkt Retail	5.5	%
Trading Companies & Distributors (Industrial Goods)	5.4	%
Commercial Services & Supplies	5.1	%
Machinery	4.9	%
Household Durables	4.1	%
Media	4.1	%
Food & Staples Retailing	4.1	%
Distributors (Consumer Goods)	3.6	%
Building Products	3.1	%
Food Products	2.8	%
Specialty Retail	2.1	%
Beverages	2.1	%
Electronic Equip, Instruments	2.0	%
Textiles, Apparel, Luxury Good	2.0	%
Chemicals	1.8	%
Electrical Equipment	1.7	%
Health Care Equipment & Supplies	1.7	%
Total	83.8	%

(1) Industry classification based on Global Industry Classification Standard methodology.

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Tenant Diversification

The following table summarizes information about the 20 largest tenants in our portfolio based on total annualized base rental revenue as of June 30, 2021.

Top 20 Tenants (1)	Number of Leases	% of Total Annualized Base Rental Revenue
Amazon	7	3.9	%
XPO Logistics, Inc.	5	1.2	%
Eastern Metal Supply, Inc.	5	1.1	%
FedEx Corporation	4	1.0	%
American Tire Distributors Inc	6	0.9	%
Westrock Company	7	0.9	%
Penguin Random House LLC	1	0.9	%
DS Smith North America	2	0.8	%
Lippert Component Manufact	4	0.8	%
Ford Motor Company	1	0.8	%
Carolina Beverage Group	2	0.8	%
Hachette Book Group, Inc.	1	0.8	%
Costco Wholesale Corporation	2	0.7	%
Packaging Corp of America	5	0.7	%
Yanfeng US Automotive Interior	2	0.7	%
Schneider Electric USA, Inc.	3	0.7	%
Kenco Logistic Services, LLC	2	0.7	%
Perrigo Company	2	0.7	%
TriMas Corporation	3	0.7	%
Generation Brands	1	0.6	%
Total	65	19.4	%

(1) Includes tenants, guarantors, and/or non-guarantor parents.

Critical Accounting Policies

See “Critical Accounting Policies” in “Management’s Discussion and Analysis of Financial Condition and Results of Operations” in our Annual Report on Form 10-K for the year ended December 31, 2020, for a discussion of our critical accounting policies and estimates.

Incentive and Equity-Based Employee Compensation Plans

On January 7, 2021, we adopted the STAG Industrial, Inc. Employee Retirement Vesting Program (the “Vesting Program”) to provide supplemental retirement benefits for eligible employees. For those employees who are retirement eligible or will become retirement eligible during the applicable vesting period under the terms of the Vesting Program, we accelerate equity-based compensation through the employee’s six-month retirement notification period or retirement eligibility date, respectively. The adoption of the Vesting Program resulted in an increase to general and administrative expenses of approximately $1.4 million and $2.9 million for the three and six months ended June 30, 2021, respectively, due to the acceleration of equity-based compensation expense for certain eligible employees. We estimate that the adoption of the Vesting Program will result in an increase in general and administrative expenses of approximately $2.4 million for the year ending December 31, 2021.

Results of Operations

The following discussion of our results of our same store (as defined below) net operating income (“NOI”) should be read in conjunction with our consolidated financial statements. For a detailed discussion of NOI, including the reasons management believes NOI is useful to investors, see “Non-GAAP Financial Measures” below. Same store results are considered to be useful to investors in evaluating our performance because they provide information relating to changes in building-level operating performance without taking into account the effects of acquisitions or dispositions. We encourage the reader to not only look at our same store results, but also our total portfolio results, due to historic and future growth.

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We define same store properties as properties that were in the Operating Portfolio for the entirety of the comparative periods presented. The results for same store properties exclude termination fees, solar income, and revenue associated with one-time tenant reimbursements of capital expenditures. Same store properties exclude Operating Portfolio properties with expansions placed into service after December 31, 2019. On June 30, 2021, we owned 421 industrial buildings consisting of 85.0 million square feet, which represents approximately 84.9% of our total portfolio, that are considered our same store portfolio in the analysis below. Same store occupancy decreased approximately 0.8% to 96.8% as of June 30, 2021 compared to 97.6% as of June 30, 2020.

Comparison of the three months ended June 30, 2021 to the three months ended June 30, 2020

The following table summarizes selected operating information for our same store portfolio and our total portfolio for the three months ended June 30, 2021 and 2020 (dollars in thousands). This table includes a reconciliation from our same store portfolio to our total portfolio by also providing information for the three months ended June 30, 2021 and 2020 with respect to the buildings acquired and disposed of and Operating Portfolio buildings with expansions placed into service or transferred from the Value Add Portfolio to the Operating Portfolio after December 31, 2019 and our flex/office buildings, Value Add Portfolio, and buildings classified as held for sale.

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	Same Store Portfolio								Acquisitions/Dispositions				Other				Total Portfolio
	Three months ended June 30,				Change				Three months ended June 30,				Three months ended June 30,				Three months ended June 30,				Change
	2021		2020		$		%		2021		2020		2021		2020		2021		2020		$		%
Revenue
Operating revenue
Rental income	$	114,243	$	106,963	$	7,280	6.8	%	$	18,376	$	6,779	$	5,186	$	3,729	$	137,805	$	117,471	$	20,334	17.3	%
Other income	142		112		30		26.8	%	30		17		450		17		622		146		476		326.0	%
Total operating revenue	114,385		107,075		7,310		6.8	%	18,406		6,796		5,636		3,746		138,427		117,617		20,810		17.7	%
Expenses
Property	20,348		17,757		2,591		14.6	%	3,631		1,541		1,377		1,094		25,356		20,392		4,964		24.3	%
Net operating income (1)	$	94,037	$	89,318	$	4,719	5.3	%	$	14,775	$	5,255	$	4,259	$	2,652	113,071		97,225		15,846		16.3	%
Other expenses
General and administrative																	12,578		9,406		3,172		33.7	%
Depreciation and amortization																	57,332		53,606		3,726		7.0	%
Other expenses																	511		588		(77)		(13.1)	%
Total other expenses																	70,421		63,600		6,821		10.7	%
Total expenses																	95,777		83,992		11,785		14.0	%
Other income (expense)
Interest and other income																	30		156		(126)		(80.8)	%
Interest expense																	(15,273)		(15,333)		60		(0.4)	%
Debt extinguishment and modification expenses																	—		(834)		834		(100.0)	%
Gain on involuntary conversion																	—		657		(657)		(100.0)	%
Gain on the sales of rental property, net																	5,976		1,045		4,931		471.9	%
Total other income (expense)																	(9,267)		(14,309)		5,042		(35.2)	%
Net income																	$	33,383	$	19,316	$	14,067	72.8	%

(1)For a detailed discussion of NOI, including the reasons management believes NOI is useful to investors, see “Non-GAAP Financial Measures” below.

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Net Income

Net income for our total portfolio increased by $14.1 million, or 72.8%, to $33.4 million for the three months ended June 30, 2021, compared to $19.3 million for the three months ended June 30, 2020.

Same Store Total Operating Revenue

Same store total operating revenue consists primarily of rental income consisting of (i) fixed lease payments, variable lease payments, straight-line rental income, and above and below market lease amortization from our properties (“lease income”), and (ii) other tenant billings for insurance, real estate taxes and certain other expenses (“other billings”).

For a detailed reconciliation of our same store total operating revenue to net income, see the table above.

Same store rental income, which is comprised of lease income and other billings as discussed below, increased by $7.3 million, or 6.8%, to $114.2 million for the three months ended June 30, 2021 compared to $107.0 million for the three months ended June 30, 2020.

Same store lease income increased by $4.3 million, or 4.7%, to $95.2 million for the three months ended June 30, 2021 compared to $90.9 million for the three months ended June 30, 2020. The increase is primarily due to an increase in rental income of approximately $3.0 million due to the execution of new leases and lease renewals with existing tenants, an increase of approximately $1.5 million due the to impact of inheriting the ownership of a solar panel array on one of our buildings, and a net decrease in the amortization of net above market leases of approximately $0.3 million. These increases were also attributable to an increase in rental income of approximately $1.4 million at properties in which, during the three months ended June 30, 2020, we determined that the future collectability was not reasonably assured, and accordingly, we converted to the cash basis of accounting and reversed any accounts receivable and accrued rent balances into rental income and did not recognize revenue for payments that were not received from the tenants. These reversals of accounts receivable and accrued rent balances decreased during the three months ended June 30, 2021. These increases were partially offset by the reduction of base rent of approximately $1.9 million due to tenant vacancy.

Same store other billings increased by $2.9 million, or 18.7%, to $19.0 million for the three months ended June 30, 2021 compared to $16.1 million for the three months ended June 30, 2020. The increase was attributable to an increase of approximately $1.3 million related to other expense reimbursements due to an increase in corresponding expenses. Additionally, there was an increase in real estate taxes levied by the taxing authority of approximately of approximately $1.6 million.

Same Store Operating Expenses

Same store operating expenses consist primarily of property operating expenses and real estate taxes and insurance.

For a detailed reconciliation of our same store operating expenses to net income, see the table above.

Total same store property operating expenses increased by $2.6 million, or 14.6%, to $20.3 million for the three months ended June 30, 2021 compared to $17.8 million for the three months ended June 30, 2020. This increase was primarily related to an increase in real estate taxes levied by the taxing authority of approximately $1.5 million, an increase of $0.8 million related to insurance, utility, and other expenses, and an increase of $0.3 million in repairs and maintenance expense.

Acquisitions and Dispositions Net Operating Income

For a detailed reconciliation of our acquisitions and dispositions NOI to net income, see the table above.

Subsequent to December 31, 2019, we acquired 61 buildings consisting of approximately 12.2 million square feet (excluding two buildings that were included in the Value Add Portfolio at June 30, 2021 or transferred from the Value Add Portfolio to the Operating Portfolio after December 31, 2019), and sold 13 buildings consisting of approximately 4.3 million square feet. For the three months ended June 30, 2021 and 2020, the buildings acquired after December 31, 2019 contributed approximately $14.7 million and $2.3 million to NOI, respectively. For the three months ended June 30, 2021 and 2020, the buildings sold after December 31, 2019 contributed approximately $0.1 million and $3.0 million to NOI, respectively. Refer to Note 3 in the accompanying Notes to Consolidated Financial Statements for additional discussion regarding buildings acquired or sold.

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Other Net Operating Income

Our other assets include our flex/office buildings, Value Add Portfolio, and Operating Portfolio buildings with expansions placed in service or transferred from the Value Add Portfolio to the Operating Portfolio after December 31, 2019. Other NOI also includes termination, solar, and other income adjustments from buildings in our same store portfolio.

For a detailed reconciliation of our other NOI to net income, see the table above.

At June 30, 2021, we owned seven flex/office buildings consisting of approximately 0.4 million square feet, two buildings in our Value Add Portfolio consisting of approximately 0.2 million square feet, one building classified as held for sale consisting of approximately 0.1 million square feet, and nine buildings consisting of approximately 2.2 million square feet that were Operating Portfolio buildings with expansions placed in service or transferred from the Value Add Portfolio to the Operating Portfolio after December 31, 2019. These buildings contributed approximately $3.4 million and $2.0 million to NOI for the three months ended June 30, 2021 and 2020, respectively. Additionally, there was approximately $0.9 million and $0.7 million of termination, solar, and other income adjustments from certain buildings in our same store portfolio for the three months ended June 30, 2021 and 2020, respectively.

Total Other Expenses

Total other expenses consist of general and administrative expenses, depreciation and amortization, and other expenses.

Total other expenses increased $6.8 million, or 10.7%, for the three months ended June 30, 2021 to $70.4 million compared to $63.6 million for the three months ended June 30, 2020. The increase is primarily a result of an increase in depreciation and amortization of approximately $3.7 million due to an increase in the depreciable asset base as a result of net acquisitions. Additionally, general and administrative expenses increased by approximately $3.2 million primarily due to the acceleration of equity-based compensation expense for certain eligible employees related to the adoption of the Vesting Program in the amount of approximately $1.4 million. General and administrative expenses also increased due to increases in compensation and other payroll costs.

Total Other Income (Expense)

Total other income (expense) consists of interest and other income, interest expense, debt extinguishment and modification expenses, gain on involuntary conversion, and gain on the sales of rental property, net. Interest expense includes interest incurred during the period as well as adjustments related to amortization of financing fees and debt issuance costs, and amortization of fair market value adjustments associated with the assumption of debt.

Total net other expense decreased $5.0 million, or 35.2%, for the three months ended June 30, 2021 to $9.3 million compared $14.3 million for the three months ended June 30, 2020. This decrease is primarily a result of an increase in the gain on the sales of rental property, net of approximately $4.9 million.

Comparison of the six months ended June 30, 2021 to the six months ended June 30, 2020

The following table summarizes selected operating information for our same store portfolio and our total portfolio for the six months ended June 30, 2021 and 2020 (dollars in thousands). This table includes a reconciliation from our same store portfolio to our total portfolio by also providing information for the six months ended June 30, 2021 and 2020 with respect to the buildings acquired and disposed of and Operating Portfolio buildings with expansions placed into service or transferred from the Value Add Portfolio to the Operating Portfolio after December 31, 2019 and our flex/office buildings, Value Add Portfolio and buildings classified as held for sale.

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	Same Store Portfolio								Acquisitions/Dispositions				Other				Total Portfolio
	Six months ended June 30,				Change				Six months ended June 30,				Six months ended June 30,				Six months ended June 30,				Change
	2021		2020		$		%		2021		2020		2021		2020		2021		2020		$		%
Revenue
Operating revenue
Rental income	$	226,675	$	216,444	$	10,231	4.7	%	$	35,693	$	12,717	$	9,262	$	6,649	$	271,630	$	235,810	$	35,820	15.2	%
Other income	198		283		(85)		(30.0)	%	144		21		450		51		792		355		437		123.1	%
Total operating revenue	226,873		216,727		10,146		4.7	%	35,837		12,738		9,712		6,700		272,422		236,165		36,257		15.4	%
Expenses
Property	42,201		36,796		5,405		14.7	%	7,186		3,145		2,971		2,398		52,358		42,339		10,019		23.7	%
Net operating income (1)	$	184,672	$	179,931	$	4,741	2.6	%	$	28,651	$	9,593	$	6,741	$	4,302	220,064		193,826		26,238		13.5	%
Other expenses
General and administrative																	25,368		19,779		5,589		28.3	%
Depreciation and amortization																	115,739		106,294		9,445		8.9	%
Other expenses																	1,363		1,064		299		28.1	%
Total other expenses																	142,470		127,137		15,333		12.1	%
Total expenses																	194,828		169,476		25,352		15.0	%
Other income (expense)
Interest and other income																	62		235		(173)		(73.6)	%
Interest expense																	(30,631)		(30,197)		(434)		1.4	%
Debt extinguishment and modification expenses																	(679)		(834)		155		(18.6)	%
Gain on involuntary conversion																	—		657		(657)		(100.0)	%
Gain on the sales of rental property, net																	12,385		47,804		(35,419)		(74.1)	%
Total other income (expense)																	(18,863)		17,665		(36,528)		(206.8)	%
Net income																	$	58,731	$	84,354	$	(25,623)	(30.4)	%

(1)For a detailed discussion of NOI, including the reasons management believes NOI is useful to investors, see “Non-GAAP Financial Measures” below.

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Net Income

Net income for our total portfolio decreased by $25.6 million, or 30.4%, to $58.7 million for the six months ended June 30, 2021 compared to $84.4 million for the six months ended June 30, 2020.

Same Store Total Operating Revenue

Same store total operating revenue consists primarily of rental income consisting of (i) fixed lease payments, variable lease payments, straight-line rental income, and above and below market lease amortization from our properties (“lease income”), and (ii) other tenant billings for insurance, real estate taxes and certain other expenses (“other billings”).

For a detailed reconciliation of our same store total operating revenue to net income, see the table above.

Same store rental income, which is comprised of lease income and other billings as discussed below, increased by $10.2 million, or 4.7%, to $226.7 million for the six months ended June 30, 2021 compared to $216.4 million for the six months ended June 30, 2020.

Same store lease income increased by $5.6 million, or 3.0%, to $189.3 million for the six months ended June 30, 2021 compared to $183.7 million for the six months ended June 30, 2020. Approximately $4.9 million of the increase was attributable to rental increases due to the execution of new leases and lease renewals with existing tenants, an increase of approximately $1.5 million due the to impact of inheriting the ownership of a solar panel array on one of our buildings, and a net decrease in the amortization of net above market leases of approximately $0.5 million. These increases were also attributable to an increase in rental income of approximately $2.2 million at properties in which, during the six months ended June 30, 2020, we determined that the future collectability was not reasonably assured, and accordingly, we converted to the cash basis of accounting and reversed any accounts receivable and accrued rent balances into rental income and did not recognize revenue for payments that were not received from the tenants. These reversals of accounts receivable and accrued rent balances decreased during the six months ended June 30, 2021. These increases were partially offset by the reduction of base rent of approximately $3.5 million due to tenant vacancy.

Same store other billings increased by $4.7 million, or 14.2%, to $37.4 million for the six months ended June 30, 2021 compared to $32.7 million for the six months ended June 30, 2020. The increase was attributable to an increase of approximately $2.2 million related to other expense reimbursements due to an increase in corresponding expenses. Additionally, there was an increase in real estate taxes levied by the taxing authority and changes to lease terms where we began paying the real estate taxes on behalf of tenants that had previously paid its taxes and operating expenses directly to respective vendors of approximately of approximately $2.5 million.

Same Store Operating Expenses

Same store operating expenses consist primarily of property operating expenses and real estate taxes and insurance.

For a detailed reconciliation of our same store operating expenses to net income, see the table above.

Total same store operating expenses increased by $5.4 million or 14.7% to $42.2 million for the six months ended June 30, 2021 compared to $36.8 million for the six months ended June 30, 2020. This increase was primarily related to an increase in real estate taxes levied by the taxing authority of approximately $2.9 million, an increase of $0.8 million related to snow removal expense, an increase of $1.3 million in utility, insurance, and other expense, and an increase of $0.4 million in repairs and maintenance expense.

Acquisitions and Dispositions Net Operating Income

For a detailed reconciliation of our acquisitions and dispositions NOI to net income, see the table above.

Subsequent to December 31, 2019, we acquired 61 buildings consisting of approximately 12.2 million square feet (excluding two buildings that were included in the Value Add Portfolio at June 30, 2021 or transferred from the Value Add Portfolio to the Operating Portfolio after December 31, 2019), and sold 13 buildings consisting of approximately 4.3 million square feet. For the six months ended June 30, 2021 and June 30, 2020, the buildings acquired after December 31, 2019 contributed approximately $28.4 million and $3.8 million to NOI, respectively. For the six months ended June 30, 2021 and June 30, 2020, the buildings sold after December 31, 2019 contributed approximately $0.3 million and $5.8 million to NOI, respectively. Refer

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to Note 3 in the accompanying Notes to Consolidated Financial Statements for additional discussion regarding buildings acquired or sold.

Other Net Operating Income

Our other assets include our flex/office buildings, Value Add Portfolio, and Operating Portfolio buildings with expansions placed in service or transferred from the Value Add Portfolio to the Operating Portfolio after December 31, 2019. Other NOI also includes termination, solar, and other income adjustments from buildings in our same store portfolio.

For a detailed reconciliation of our other NOI to net income, see the table above.

At June 30, 2021, we owned seven flex/office buildings consisting of approximately 0.4 million square feet, two buildings in our Value Add Portfolio consisting of approximately 0.2 million square feet, one building classified as held for sale consisting of approximately 0.1 million square feet, and nine buildings consisting of approximately 2.2 million square feet that were Operating Portfolio buildings with expansions placed in service or transferred from the Value Add Portfolio to the Operating Portfolio after December 31, 2019. These buildings contributed approximately $6.3 million and $3.5 million to NOI for the six months ended June 30, 2021 and June 30, 2020, respectively. Additionally, there was $0.4 million and $0.8 million of termination, solar, and other income adjustments from certain buildings in our same store portfolio for the six months ended June 30, 2021 and June 30, 2020, respectively.

Total Other Expenses

Total other expenses consist of general and administrative expenses, depreciation and amortization, and other expenses.

Total other expenses increased $15.3 million, or 12.1%, to $142.5 million for the six months ended June 30, 2021 compared to $127.1 million for the six months ended June 30, 2020. This is primarily a result of an increase in depreciation and amortization of approximately $9.4 million as a result of net acquisitions that increased the depreciable asset base. Additionally, general and administrative expenses increased by approximately $5.6 million primarily due to the acceleration of equity-based compensation expense for certain eligible employees related to the adoption of the Vesting Program in the amount of approximately $2.9 million. General and administrative expenses also increased due to increases in compensation and other payroll costs. Additionally, other expenses increased approximately $0.3 million that was primarily due to the settlement of litigation related to a terminated acquisition contract during the COVID-19 pandemic.

Total Other Income (Expense)

Total other income (expense) consists of interest and other income, interest expense, debt extinguishment and modification expenses, gain on involuntary conversion, and gain on the sales of rental property, net. Interest expense includes interest incurred during the period as well as adjustments related to amortization of financing fees and debt issuance costs, and amortization of fair market value adjustments associated with the assumption of debt.

Total other income (expense) decreased $36.5 million, or 206.8%, to a total net other expense of $18.9 million for the six months ended June 30, 2021 compared to $17.7 million total net other income for the six months ended June 30, 2020. This decrease is primarily the result of an decrease in gain on the sales of rental property, net of approximately $35.4 million and a decrease in gain on involuntary conversion of approximately $0.7 million related to an eminent domain taking of a portion of a parcel of land that occurred during the six months ended June 30, 2020. Additionally, there was an decrease of approximately $0.2 million in interest and other income due to a decreased cash and cash equivalents balance during the six months ended June 30, 2021 compared to the six months ended June 30, 2020. There was also an increase in interest expense of approximately $0.4 million which was primarily attributable to the funding of the Unsecured Term Loan F on March 25, 2020.

Non-GAAP Financial Measures

In this report, we disclose funds from operations (“FFO”) and NOI, which meet the definition of “non-GAAP financial measures” as set forth in Item 10(e) of Regulation S-K promulgated by the Securities and Exchange Commission (“SEC”). As a result, we are required to include in this report a statement of why management believes that presentation of these measures provides useful information to investors.

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Funds From Operations

FFO should not be considered as an alternative to net income (determined in accordance with GAAP) as an indication of our performance, and we believe that to understand our performance further, FFO should be compared with our reported net income (loss) in accordance with GAAP, as presented in our consolidated financial statements included in this report.

We calculate FFO in accordance with the standards established by the National Association of Real Estate Investment Trusts (“NAREIT”). FFO represents GAAP net income (loss), excluding gains (or losses) from sales of depreciable operating buildings, land sales, impairment write-downs of depreciable real estate, real estate related depreciation and amortization (excluding amortization of deferred financing costs and fair market value of debt adjustment) and after adjustments for unconsolidated partnerships and joint ventures.

Management uses FFO as a supplemental performance measure because it is a widely recognized measure of the performance of REITs. FFO may be used by investors as a basis to compare our operating performance with that of other REITs.

However, because FFO excludes depreciation and amortization and captures neither the changes in the value of our buildings that result from use or market conditions nor the level of capital expenditures and leasing commissions necessary to maintain the operating performance of our buildings, all of which have real economic effects and could materially impact our results from operations, the utility of FFO as a measure of our performance is limited. In addition, other REITs may not calculate FFO in accordance with the NAREIT definition, and, accordingly, our FFO may not be comparable to such other REITs’ FFO. FFO should not be used as a measure of our liquidity, and is not indicative of funds available for our cash needs, including our ability to pay dividends.

The following table sets forth a reconciliation of our FFO attributable to common stockholders and unit holders for the periods presented to net income, the nearest GAAP equivalent.

	Three months ended June 30,				Six months ended June 30,
Reconciliation of Net Income to FFO (in thousands)	2021		2020		2021		2020
Net income	$	33,383	$	19,316	$	58,731	$	84,354
Rental property depreciation and amortization	57,291		53,537		115,630		106,154
Gain on the sales of rental property, net	(5,976)		(1,045)		(12,385)		(47,804)
FFO	84,698		71,808		161,976		142,704
Preferred stock dividends	—		(1,289)		(1,289)		(2,578)
Redemption of preferred stock	—		—		(2,582)		—
Amount allocated to restricted shares of common stock and unvested units	(224)		(196)		(461)		(406)
FFO attributable to common stockholders and unit holders	$	84,474	$	70,323	$	157,644	$	139,720

Net Operating Income

We consider NOI to be an appropriate supplemental performance measure to net income (loss) because we believe it helps investors and management understand the core operations of our buildings. NOI is defined as rental income, which includes billings for common area maintenance, real estate taxes and insurance, less property expenses and real estate taxes and insurance. NOI should not be viewed as an alternative measure of our financial performance since it excludes expenses which could materially impact our results of operations. Further, our NOI may not be comparable to that of other real estate companies, as they may use different methodologies for calculating NOI.

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The following table sets forth a reconciliation of our NOI for the periods presented to net income, the nearest GAAP equivalent.

	Three months ended June 30,				Six months ended June 30,
Reconciliation of Net Income to NOI (in thousands)	2021		2020		2021		2020
Net income	$	33,383	$	19,316	$	58,731	$	84,354
General and administrative	12,578		9,406		25,368		19,779
Transaction costs	59		8		79		59
Depreciation and amortization	57,332		53,606		115,739		106,294
Interest and other income	(30)		(156)		(62)		(235)
Interest expense	15,273		15,333		30,631		30,197
Gain on involuntary conversion	—		(657)		—		(657)
Debt extinguishment and modification expenses	—		834		679		834
Other expenses	452		580		1,284		1,005
Gain on the sales of rental property, net	(5,976)		(1,045)		(12,385)		(47,804)
Net operating income	$	113,071	$	97,225	$	220,064	$	193,826

Cash Flows

Comparison of the six months ended June 30, 2021 to the six months ended June 30, 2020

The following table summarizes our cash flows for the six months ended June 30, 2021 compared to the six months ended June 30, 2020.

	Six months ended June 30,				Change
Cash Flows (dollars in thousands)	2021		2020		$		%
Net cash provided by operating activities	$	162,373	$	148,088	$	14,285	9.6	%
Net cash used in investing activities	$	202,017	$	55,089	$	146,928	266.7	%
Net cash provided by financing activities	$	37,820	$	9,739	$	28,081	288.3	%

Net cash provided by operating activities increased $14.3 million to $162.4 million for the six months ended June 30, 2021 compared to $148.1 million for the six months ended June 30, 2020. The increase was primarily attributable to incremental operating cash flows from property acquisitions completed after June 30, 2020, and operating performance at existing properties. These increases were partially offset by the loss of cash flows from property dispositions completed after June 30, 2020 and fluctuations in working capital due to timing of payments and rental receipts.

Net cash used in investing activities increased $146.9 million to $202.0 million for the six months ended June 30, 2021 compared to $55.1 million for the six months ended June 30, 2020. The increase was primarily attributable to the acquisition of 15 buildings for a total cash consideration of approximately $221.8 million for the six months ended June 30, 2021 compared to the acquisition of 11 buildings for a total cash consideration of approximately $131.1 million for the six months ended June 30, 2020. The increase is also attributable to a decrease in proceeds from sales of rental property, net related to the disposition of six buildings during the six months ended June 30, 2021 for net proceeds of approximately $39.6 million, compared to the six months ended June 30, 2020 where we sold four buildings for net proceeds of approximately $101.9 million.

Net cash provided by financing activities increased $28.1 million to $37.8 million for the six months ended June 30, 2021 compared to $9.7 million for the six months ended June 30, 2020. The increase is primarily attributable to a net cash inflow of approximately $323.0 million from our unsecured credit facility. This increase was partially offset by a decrease of net proceeds from the sales of common stock of approximately $109.3 million, the redemption of the Series C Preferred Stock (as defined below) of $75.0 million, and an increase of approximately $10.3 million in dividends paid during the six months ended June 30, 2021 compared to the six months ended June 30, 2020. Additionally, the funding of the Unsecured Term Loan F of $100.0 million did not recur during the six months ended June 30, 2021 compared to the six months ended June 30, 2020.

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Liquidity and Capital Resources

We believe that our liquidity needs will be satisfied through cash flows generated by operations, disposition proceeds, and financing activities. Operating cash flow is primarily rental income, expense recoveries from tenants, and other income from operations and is our principal source of funds that we use to pay operating expenses, debt service, recurring capital expenditures and the distributions required to maintain our REIT qualification. We look to the capital markets (common equity, preferred equity, and debt) to primarily fund our acquisition activity. We seek to increase cash flows from our properties by maintaining quality standards for our buildings that promote high occupancy rates and permit increases in rental rates while reducing tenant turnover and controlling operating expenses. We believe that our revenue, together with proceeds from building sales and debt and equity financings, will continue to provide funds for our short-term and medium-term liquidity needs.

Our short-term liquidity requirements consist primarily of funds to pay for operating expenses and other expenditures directly associated with our buildings, including interest expense, interest rate swap payments, scheduled principal payments on outstanding indebtedness, funding of property acquisitions under contract, general and administrative expenses, and capital expenditures for tenant improvements and leasing commissions.

Our long-term liquidity needs, in addition to recurring short-term liquidity needs as discussed above, consist primarily of funds necessary to pay for acquisitions, non-recurring capital expenditures, and scheduled debt maturities. We intend to satisfy our long-term liquidity needs through cash flow from operations, the issuance of equity or debt securities, other borrowings, property dispositions, or, in connection with acquisitions of certain additional buildings, the issuance of common units in the Operating Partnership.

Since the COVID-19 pandemic, we have worked to ensure that we maintain adequate liquidity. On February 5, 2021 we refinanced the Unsecured Credit Facility and the Unsecured Term Loan G, as discussed in “Indebtedness Outstanding” below. As of June 30, 2021, we had total immediate liquidity of approximately $477.7 million, comprised of $14.6 million of cash and cash equivalents and $463.1 million of immediate availability on our unsecured credit facility. When incorporating the remaining undrawn balance available on our unsecured credit facility, the approximately $135.2 million of forward equity proceeds available to us at our option through November 16, 2021, and the approximately $48.9 million of forward equity proceeds available to us at our option through April 5, 2022, our total liquidity as of June 30, 2021 was approximately $661.8 million. Additionally, subsequent to June 30, 2021, on July 8, 2021, we entered into a note purchase agreement for the future private placement by the Operating Partnership of $325.0 million senior unsecured notes, which are expected to be issued on or around September 28, 2021, subject to conditions, as discussed in “Indebtedness Outstanding” below.

In addition, we require funds for future dividends to be paid to our common and preferred stockholders and unit holders in the Operating Partnership. These distributions on our common stock are voluntary (at the discretion of our board of directors), to the extent we have satisfied distribution requirements in order to maintain our REIT status for federal income tax purposes, and may be reduced or stopped if needed to fund other liquidity requirements or for other reasons. The following table summarizes the dividends attributable to our outstanding common stock that had a record date during the six months ended June 30, 2021.

Month Ended 2021	Declaration Date	Record Date	Per Share		Payment Date
June 30	April 12, 2021	June 30, 2021	$	0.120833	July 15, 2021
May 31	April 12, 2021	May 28, 2021	0.120833		June 15, 2021
April 30	April 12, 2021	April 30, 2021	0.120833		May 17, 2021
March 31	January 11, 2021	March 31, 2021	0.120833		April 15, 2021
February 28	January 11, 2021	February 26, 2021	0.120833		March 15, 2021
January 31	January 11, 2021	January 29, 2021	0.120833		February 16, 2021
Total			$	0.724998

On July 13, 2021, our board of directors declared the common stock dividends for the months ending July 31, 2021, August 31, 2021, and September 30, 2021 at a monthly rate of $0.120833 per share of common stock.

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During the three months ended March 31, 2021, we declared quarterly cumulative dividends on the 6.875% Series C Cumulative Redeemable Preferred Stock (“Series C Preferred Stock”) at a rate equivalent to the fixed annual rate of $1.71875 per share. The following table summarizes the dividends on the Series C Preferred Stock during the six months ended June 30, 2021.

Quarter Ended 2021	Declaration Date	Series C Preferred Stock Per Share		Payment Date
March 31	January 11, 2021	$	0.4296875	March 31, 2021
Total		$	0.4296875

On March 1, 2021, we gave notice to redeem all 3,000,000 issued and outstanding shares of the Series C Preferred Stock on March 31, 2021. We redeemed the Series C Preferred Stock on March 31, 2021 at a cash redemption price of $25.00 per share, plus accrued and unpaid dividends to, but excluding, the redemption date.

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Indebtedness Outstanding

The following table summarizes certain information with respect to our indebtedness outstanding as of June 30, 2021.

Loan	Principal Outstanding as of June 30, 2021 (in thousands)		Interest  Rate(1)(2)		Maturity Date	Prepayment Terms(3)
Unsecured credit facility:
Unsecured Credit Facility(4)	$	284,000	L + 0.90%		January 12, 2024	i
Total unsecured credit facility	284,000
Unsecured term loans:
Unsecured Term Loan A	150,000		3.38	%	March 31, 2022	i
Unsecured Term Loan D	150,000		2.85	%	January 4, 2023	i
Unsecured Term Loan E	175,000		3.92	%	January 15, 2024	i
Unsecured Term Loan F	200,000		3.11	%	January 12, 2025	i
Unsecured Term Loan G	300,000		1.28	%	February 5, 2026	i
Total unsecured term loans	975,000
Total unamortized deferred financing fees and debt issuance costs	(4,070)
Total carrying value unsecured term loans, net	970,930
Unsecured notes:
Series F Unsecured Notes	100,000		3.98	%	January 5, 2023	ii
Series A Unsecured Notes	50,000		4.98	%	October 1, 2024	ii
Series D Unsecured Notes	100,000		4.32	%	February 20, 2025	ii
Series G Unsecured Notes	75,000		4.10	%	June 13, 2025	ii
Series B Unsecured Notes	50,000		4.98	%	July 1, 2026	ii
Series C Unsecured Notes	80,000		4.42	%	December 30, 2026	ii
Series E Unsecured Notes	20,000		4.42	%	February 20, 2027	ii
Series H Unsecured Notes	100,000		4.27	%	June 13, 2028	ii
Total unsecured notes	575,000
Total unamortized deferred financing fees and debt issuance costs	(1,610)
Total carrying value unsecured notes, net	573,390
Mortgage notes (secured debt):
Wells Fargo Bank, National Association CMBS Loan	47,580		4.31	%	December 1, 2022	iii
Thrivent Financial for Lutherans	3,494		4.78	%	December 15, 2023	iv
United of Omaha Life Insurance Company	5,040		3.71	%	October 1, 2039	ii
Total mortgage notes	56,114
Less: Net unamortized fair market value discount	(134)
Total unamortized deferred financing fees and debt issuance costs	(169)
Total carrying value mortgage notes, net	55,811
Total / weighted average interest rate(5)	$	1,884,131	2.99	%

(1)Interest rate as of June 30, 2021. At June 30, 2021, the one-month LIBOR (“L”) was 0.10050%. The current interest rate is not adjusted to include the amortization of deferred financing fees or debt issuance costs incurred in obtaining debt or any unamortized fair market value premiums. The spread over the applicable rate for our unsecured credit facility and unsecured term loans is based on the our debt rating, as defined in the respective loan agreements.

(2)The unsecured term loans have a stated interest rate of one-month LIBOR plus a spread of 1.0%. As of June 30, 2021, one-month LIBOR for the Unsecured Term Loans A, D, E, F, and G was swapped to a fixed rate of 2.38%, 1.85%, 2.92%, 2.11%, and 0.28%, respectively. One-month LIBOR for the Unsecured Term Loan G will be swapped to a fixed rate of 0.94% effective April 18, 2023.

(3)Prepayment terms consist of (i) pre-payable with no penalty; (ii) pre-payable with penalty; (iii) pre-payable without penalty three months prior to the maturity date, however can be defeased; and (iv) pre-payable without penalty three months prior to the maturity date.

(4)The capacity of the unsecured credit facility is $750.0 million. The initial maturity date is January 15, 2023, which may be extended pursuant to two six-month extension options exercisable at our discretion upon advance written notice. Exercise of each six-month option is subject to the following conditions: (i) absence of a default immediately before the extension and immediately after giving effect to the extension, (ii) accuracy of representations and warranties as of the extension date (both immediately before and after the extension), as if made on the extension date, and (iii) payment of a fee. Neither extension option is subject to lender consent, assuming proper notice and satisfaction of the conditions.

(5)The weighted average interest rate was calculated using the fixed interest rate swapped on the notional amount of $975.0 million of debt, and is not adjusted to include the amortization of deferred financing fees or debt issuance costs incurred in obtaining debt or any unamortized fair market value premiums or discounts.

46

The aggregate undrawn nominal commitments on the unsecured credit facility and unsecured term loans as of June 30, 2021 was approximately $463.1 million, including issued letters of credit. Our actual borrowing capacity at any given point in time may be less and is restricted to a maximum amount based on our debt covenant compliance.

Our unsecured credit facility, unsecured term loans, unsecured notes, and mortgage notes are subject to ongoing compliance with a number of financial and other covenants. As of June 30, 2021, we were in compliance with the applicable financial covenants.

Subsequent to June 30, 2021, on July 8, 2021, we entered into a note purchase agreement for the future private placement by the Operating Partnership of $275.0 million senior unsecured notes, maturing September 29, 2031, with a fixed annual interest rate of 2.80%, and $50.0 million senior unsecured notes, maturing September 28, 2033, with a fixed annual interest rate of 2.95%. The notes are expected to be issued on or around September 28, 2021, subject to conditions. The note purchase agreement contains a number of financial covenants substantially similar to the financial covenants contained in our unsecured credit facility, plus a financial covenant that requires us to maintain a minimum interest coverage ratio of not less than 1.50:1.00. The Company and certain of its subsidiaries will guarantee the obligations under the notes.

On February 25, 2021, we assumed a mortgage note with United of Omaha Life Insurance Company of approximately $5.1 million in connection with the acquisition of the property located in Long Island, NY, which serves as collateral for the debt. The debt matures on October 1, 2039 and bears interest at 3.71% per annum. The assumed debt was recorded at fair value and a fair value discount of approximately $0.2 million was recorded. The fair value of debt was determined by discounting the future cash flows using the current rate of approximately 4.10% at which loans would be made to borrowers with similar credit ratings for loans with similar remaining maturities, terms, and loan-to-value ratios. The fair value of the debt is based on Level 3 inputs and is a nonrecurring fair value measurement.

On February 5, 2021, we entered into an amendment to the unsecured credit facility (the “Credit Facility Amendment”). The Credit Facility Amendment provides for an increase in the aggregate commitments available for borrowing under the unsecured credit facility from $500 million to up to $750 million. As of June 30, 2021, the unsecured credit facility bore an interest rate of LIBOR plus a spread of 0.90% based on our debt rating, as defined in the loan agreement. In connection with the Credit Facility Amendment, we incurred approximately $1.2 million in costs which are being deferred and amortized through the maturity date of the unsecured credit facility. Other than the increase in the borrowing commitments, the material terms of the unsecured credit facility remain unchanged.

On February 5, 2021, we entered into an amendment to the Unsecured Term Loan G (the “Amendment to Unsecured Term Loan G”). The Amendment to Unsecured Term Loan G provides for an extension of the maturity date to February 5, 2026 and a reduced stated interest rate of one-month LIBOR plus a spread that ranges from 0.85% to 1.65% for LIBOR borrowings based on our debt ratings. The Amendment to Unsecured Term Loan G also amended the provision for a minimum interest rate, or floor, for LIBOR borrowings to 0.00% and for Base Rate borrowings to 1.00%. As of June 30, 2021, borrowings under the Unsecured Term Loan G bore interest at LIBOR plus 1.00%. In connection with the Amendment to Unsecured Term Loan G, we incurred approximately $1.6 million in costs which are being deferred and amortized through the new maturity date of February 5, 2026. We also incurred approximately $0.7 million of modification expenses which were recognized in debt extinguishment and modification expenses in the accompanying Consolidated Statements of Operations. Additionally, we reversed the previously accrued extension fees of approximately $1.1 million from an amendment to the Unsecured Term Loan G that was entered into on April 17, 2020, which resulted in a decrease to interest expense of approximately $0.3 million. Other than the maturity and interest rate provisions described above, the material terms of the Unsecured Term Loan G remain unchanged.

The following table summarizes our debt capital structure as of June 30, 2021.

Debt Capital Structure	June 30, 2021
Total principal outstanding (in thousands)	$	1,890,114
Weighted average duration (years)	3.3
% Secured debt	3.0		%
% Debt maturing next 12 months	7.9		%
Net Debt to Real Estate Cost Basis(1)	34.8		%

(1)We define Net Debt as our amounts outstanding under our unsecured credit facility, unsecured term loans, unsecured notes, and mortgage notes, less cash and cash equivalents. We define Real Estate Cost Basis as the book value of rental property and deferred leasing intangibles, exclusive of the related accumulated depreciation and amortization.

We regularly pursue new financing opportunities to ensure an appropriate balance sheet position. As a result of these dedicated efforts, we are confident in our ability to meet future debt maturities and building acquisition funding needs. We believe that our current balance sheet is in an adequate position at the date of this filing, despite possible volatility in the credit markets.

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Our interest rate exposure as it relates to interest expense payments on our floating rate debt is managed through our use of interest rate swaps, which fix the rate of our long term floating rate debt. For a detailed discussion on our use of interest rate swaps, see “Interest Rate Risk” below.

Equity

Preferred Stock

On March 1, 2021, we gave notice to redeem all 3,000,000 issued and outstanding shares of the Series C Preferred Stock on March 31, 2021. We redeemed the Series C Preferred Stock on March 31, 2021 at a cash redemption price of $25.00 per share, plus accrued and unpaid dividends to, but excluding, the redemption date. We have no outstanding preferred stock issuances as of June 30, 2021.

Common Stock

The following table summarizes our at-the-market (“ATM”) common stock offering program as of June 30, 2021. We may from time to time sell common stock through sales agents under the program.

ATM Common Stock Offering Program	Date	Maximum Aggregate Offering Price (in thousands)		Aggregate Common Stock Available as of June 30, 2021 (in thousands)
2019 $600 million ATM	February 14, 2019	$	600,000	$	204,023

The table below sets forth the activity for the ATM common stock offering programs during the three months ended June 30, 2021 (in thousands, except share data).

	Three months ended June 30, 2021
ATM Common Stock Offering Program(1)	Shares Sold	Weighted Average Price Per Share		Sales Agents’ Fees		Net Proceeds
2019 $600 million ATM	1,208,014	$	34.95	$	422	$	41,799
Total/weighted average	1,208,014	$	34.95	$	422	$	41,799

(1)Includes transactions settled during the period and excludes ATM issuances on a forward basis.

On April 5, 2021, we sold 1,446,760 shares on a forward basis under the ATM common stock offering program at a price of $34.56 per share, or $50.0 million, and $34.2144 per share net of sales agent fees. We do not initially receive any proceeds from the sale of shares on a forward basis. We may elect to cash settle or net share settle the forward sale agreement at any time through the scheduled maturity date of April 5, 2022.

Subsequent to June 30, 2021, we sold 1,719,849 shares under the ATM common stock offering program at a price of $37.98 per share, or $65.3 million, and $37.67 per share net of sales agent fees.

Noncontrolling Interest

We own our interests in all of our properties and conduct substantially all of our business through the Operating Partnership. We are the sole member of the sole general partner of the Operating Partnership. As of June 30, 2021, we owned approximately 97.8% of the Operating Partnership, and our current and former executive officers, directors, senior employees and their affiliates, and third parties who contributed properties to us in exchange for common units in our Operating Partnership, owned the remaining 2.2%.

Interest Rate Risk

We use interest rate swaps to fix the rate of our variable rate debt. As of June 30, 2021, all of our outstanding variable rate debt, with the exception of our unsecured credit facility, was fixed with interest rate swaps through maturity.

We recognize all derivatives on the balance sheet at fair value. If the derivative is designated as a hedge, depending on the nature of the hedge, changes in the fair value of derivatives are either offset against the change in fair value of the hedged assets, liabilities, or firm commitments through earnings or recognized in other comprehensive income (loss), which is a

48

component of equity. Derivatives that are not designated as hedges must be adjusted to fair value and the changes in fair value must be reflected as income or expense.

We have established criteria for suitable counterparties in relation to various specific types of risk. We only use counterparties that have a credit rating of no lower than investment grade at swap inception from Moody’s Investor Services, Standard & Poor’s, or Fitch Ratings or other nationally recognized rating agencies.

The following table details our outstanding interest rate swaps as of June 30, 2021.

Interest Rate Derivative Counterparty	Trade Date	Effective Date	Notional Amount (in thousands)		Fair Value (in thousands)		Pay Fixed Interest Rate		Receive Variable Interest Rate	Maturity Date
Wells Fargo Bank, N.A.	Jan-08-2015	Mar-20-2015	$	25,000	$	(324)	1.8280	%	One-month L	Mar-31-2022
The Toronto-Dominion Bank	Jan-08-2015	Feb-14-2020	$	25,000	$	(441)	2.4535	%	One-month L	Mar-31-2022
Regions Bank	Jan-08-2015	Feb-14-2020	$	50,000	$	(891)	2.4750	%	One-month L	Mar-31-2022
Capital One, N.A.	Jan-08-2015	Feb-14-2020	$	50,000	$	(912)	2.5300	%	One-month L	Mar-31-2022
The Toronto-Dominion Bank	Jul-20-2017	Oct-30-2017	$	25,000	$	(637)	1.8485	%	One-month L	Jan-04-2023
Royal Bank of Canada	Jul-20-2017	Oct-30-2017	$	25,000	$	(638)	1.8505	%	One-month L	Jan-04-2023
Wells Fargo Bank, N.A.	Jul-20-2017	Oct-30-2017	$	25,000	$	(638)	1.8505	%	One-month L	Jan-04-2023
PNC Bank, N.A.	Jul-20-2017	Oct-30-2017	$	25,000	$	(637)	1.8485	%	One-month L	Jan-04-2023
PNC Bank, N.A.	Jul-20-2017	Oct-30-2017	$	50,000	$	(1,273)	1.8475	%	One-month L	Jan-04-2023
The Toronto-Dominion Bank	Apr-20-2020	Sep-29-2020	$	75,000	$	(64)	0.2750	%	One-month L	Apr-18-2023
Wells Fargo Bank, N.A.	Apr-20-2020	Sep-29-2020	$	75,000	$	(70)	0.2790	%	One-month L	Apr-18-2023
The Toronto-Dominion Bank	Apr-20-2020	Mar-19-2021	$	75,000	$	(64)	0.2750	%	One-month L	Apr-18-2023
Wells Fargo Bank, N.A.	Apr-20-2020	Mar-19-2021	$	75,000	$	(71)	0.2800	%	One-month L	Apr-18-2023
The Toronto-Dominion Bank	Jul-24-2018	Jul-26-2019	$	50,000	$	(3,243)	2.9180	%	One-month L	Jan-12-2024
PNC Bank, N.A.	Jul-24-2018	Jul-26-2019	$	50,000	$	(3,243)	2.9190	%	One-month L	Jan-12-2024
Bank of Montreal	Jul-24-2018	Jul-26-2019	$	50,000	$	(3,243)	2.9190	%	One-month L	Jan-12-2024
U.S. Bank, N.A.	Jul-24-2018	Jul-26-2019	$	25,000	$	(1,622)	2.9190	%	One-month L	Jan-12-2024
Wells Fargo Bank, N.A.	May-02-2019	Jul-15-2020	$	50,000	$	(2,932)	2.2460	%	One-month L	Jan-15-2025
U.S. Bank, N.A.	May-02-2019	Jul-15-2020	$	50,000	$	(2,932)	2.2459	%	One-month L	Jan-15-2025
Regions Bank	May-02-2019	Jul-15-2020	$	50,000	$	(2,930)	2.2459	%	One-month L	Jan-15-2025
Bank of Montreal	Jul-16-2019	Jul-15-2020	$	50,000	$	(1,990)	1.7165	%	One-month L	Jan-15-2025
U.S. Bank, N.A.	Feb-17-2021	Apr-18-2023	$	150,000	$	848	0.9385	%	One-month L	Feb-5-2026
Wells Fargo Bank, N.A.	Feb-17-2021	Apr-18-2023	$	75,000	$	428	0.9365	%	One-month L	Feb-5-2026
The Toronto-Dominion Bank	Feb-17-2021	Apr-18-2023	$	75,000	$	428	0.9360	%	One-month L	Feb-5-2026

The swaps outlined in the above table were all designated as cash flow hedges of interest rate risk, and all are valued as Level 2 financial instruments. Level 2 financial instruments are defined as significant other observable inputs. As of June 30, 2021, the fair value of three of our interest rate swaps were in an asset position of approximately $1.7 million, including any adjustment for nonperformance risk related to these agreements. The remaining 21 interest rate swaps were in a liability position of approximately $28.8 million, including any adjustment for nonperformance risk related to these agreements.

As of June 30, 2021, we had $1,259.0 million of variable rate debt. As of June 30, 2021, all of our outstanding variable rate debt, with the exception of our unsecured credit facility, was fixed with interest rate swaps through maturity. To the extent interest rates increase, interest costs on our floating rate debt not fixed with interest rate swaps will increase, which could adversely affect our cash flow and our ability to pay principal and interest on our debt and our ability to make distributions to our security holders. From time to time, we may enter into interest rate swap agreements and other interest rate hedging contracts, including swaps, caps and floors. In addition, an increase in interest rates could decrease the amounts third parties are willing to pay for our assets, thereby limiting our ability to change our portfolio promptly in response to changes in economic or other conditions.

Off-balance Sheet Arrangements

As of June 30, 2021, we had letters of credit related to development projects and certain other agreements of approximately $2.9 million. As of June 30, 2021, we had no other material off-balance sheet arrangements.

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Item 3.  Quantitative and Qualitative Disclosures about Market Risk

Our future income, cash flows and fair values relevant to financial instruments are dependent upon prevailing market interest rates. Market risk refers to the risk of loss from adverse changes in market prices and interest rates. The primary market risk we are exposed to is interest rate risk.  We have used derivative financial instruments to manage, or hedge, interest rate risks related to our borrowings, primarily through interest rate swaps.

As of June 30, 2021, we had $1,259.0 million of variable rate debt outstanding. As of June 30, 2021, all of our outstanding variable rate debt, with the exception of our unsecured credit facility which had a balance of $284.0 million, was fixed with interest rate swaps through maturity. To the extent we undertake additional variable rate indebtedness, if interest rates increase, then so will the interest costs on our unhedged variable rate debt, which could adversely affect our cash flow and our ability to pay principal and interest on our debt and our ability to make distributions to our security holders. Further, rising interest rates could limit our ability to refinance existing debt when it matures or significantly increase our future interest expense. From time to time, we enter into interest rate swap agreements and other interest rate hedging contracts, including swaps, caps and floors. While these agreements are intended to lessen the impact of rising interest rates on us, they also expose us to the risk that the other parties to the agreements will not perform, we could incur significant costs associated with the settlement of the agreements, the agreements will be unenforceable and the underlying transactions will fail to qualify as highly-effective cash flow hedges under GAAP. In addition, an increase in interest rates could decrease the amounts third parties are willing to pay for our assets, thereby limiting our ability to change our portfolio promptly in response to changes in economic or other conditions. In addition, an increase in interest rates could decrease the amounts third parties are willing to pay for our assets, thereby limiting our ability to change our portfolio promptly in response to changes in economic or other conditions. If interest rates increased by 100 basis points and assuming we had an outstanding balance of $284.0 million on our unsecured credit facility for the year ended June 30, 2021, our interest expense would have increased by approximately $1.4 million for the year ended June 30, 2021.

Item 4.  Controls and Procedures

Evaluation of Disclosure Controls and Procedures

As required by SEC Rule 13a-15(b), we have evaluated, under the supervision of and with the participation of management, including our Chief Executive Officer and Chief Financial Officer, the effectiveness of the design and operation of our disclosure controls and procedures, as defined in Rules 13a-15(e) and 15d-15(e) of the Exchange Act, as of June 30, 2021. Based on the foregoing, our Chief Executive Officer and Chief Financial Officer concluded that our disclosure controls and procedures for the periods covered by this report were effective to provide reasonable assurance that information required to be disclosed by our Company in reports that we file or submit under the Exchange Act is recorded, processed, summarized and reported within the time periods specified in SEC rules and forms and is accumulated and communicated to our management, including our Chief Executive Officer and Chief Financial Officer, as appropriate to allow timely decisions regarding required disclosure.

Changes in Internal Controls

There was no change to our internal control over financial reporting during the quarter ended June 30, 2021 that has materially affected, or is reasonably likely to materially affect, our internal control over financial reporting.

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PART II. Other Information

Item 1.  Legal Proceedings

From time to time, we are a party to various lawsuits, claims and other legal proceedings that arise in the ordinary course of our business. We are not currently a party, as plaintiff or defendant, to any legal proceedings which, individually or in the aggregate, would be expected to have a material effect on our business, financial condition or results of operations if determined adversely to our company.

Item 1A.  Risk Factors

There have been no material changes from the risk factors disclosed in our Annual Report on Form 10-K for the year ended December 31, 2020 filed with the SEC on February 10, 2021, as updated in our Quarterly Report on Form 10-Q for the quarter ended March 31, 2021 filed with the SEC on May 4, 2021.

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

Recent Sales of Unregistered Equity Securities

During the quarter ended June 30, 2021, we issued 22,175 shares of common stock upon redemption of 22,175 common units in the Operating Partnership held by various limited partners. The issuance of such shares of common stock was either registered under the Securities Act or effected in reliance upon an exemption from registration provided by Section 4(a)(2) under the Securities Act and the rules and regulations promulgated thereunder. We relied on the exemption based on representations given by the holders of the common units.

All other issuances of unregistered securities during the quarter ended June 30, 2021, if any, have previously been disclosed in filings with the SEC.

Item 3. Defaults Upon Senior Securities

None.

Item 4.  Mine Safety Disclosures

Not applicable.

Item 5.  Other Information

None.

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Item 6.  Exhibits

Exhibit  Number	Description of Document
31.1 *	Certification of Chief Executive Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002
31.2 *	Certification of Chief Financial Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002
32.1 **	Certification of Chief Executive Officer and Chief Financial Officer Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002
101.INS *	Inline XBRL Instance Document - the instance document does not appear in the Interactive Data File because its XBRL tags are embedded within the Inline XBRL document
101.SCH *	Inline XBRL Taxonomy Extension Schema Document
101.CAL *	Inline XBRL Taxonomy Extension Calculation Linkbase Document
101.DEF *	Inline XBRL Taxonomy Extension Definition Linkbase Document
101.LAB *	Inline XBRL Taxonomy Extension Label Linkbase Document
101.PRE *	Inline XBRL Taxonomy Extension Presentation Linkbase Document
104 *	Cover Page Interactive Date File (formatted as Inline XBRL and contained in Exhibit 101)

*    Filed herewith.

**    Furnished herewith.

52

SIGNATURES

Pursuant to the requirements of Section 13 or 15(d) 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.

		STAG INDUSTRIAL, INC.
Date: July 27, 2021	BY:	/s/ WILLIAM R. CROOKER
		William R. Crooker
		President, Chief Financial Officer and Treasurer (Principal Financial Officer)
	BY:	/s/ JACLYN M. PAUL
		Jaclyn M. Paul
		Chief Accounting Officer, Senior Vice President (Principal Accounting Officer)

53

EX-31.1

Exhibit 31.1

Certification of Chief Executive Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002

I, Benjamin S. Butcher, certify that:

1.I have reviewed this quarterly report on Form 10-Q of STAG Industrial, 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(s) 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(s) 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.

Date: July 27, 2021	/s/ BENJAMIN S. BUTCHER
	Benjamin S. Butcher Chairman and Chief Executive Officer

EX-31.2

Exhibit 31.2

Certification of Chief Financial Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002

I, William R. Crooker, certify that:

1.I have reviewed this quarterly report on Form 10-Q of STAG Industrial, 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(s) 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(s) 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.

Date: July 27, 2021	/s/ WILLIAM R. CROOKER
	William R. Crooker President, Chief Financial Officer and Treasurer

EX-32.1

Exhibit 32.1

Certification Pursuant To

18 U.S.C. Section 1350,

as Adopted Pursuant to

Section 906 of The Sarbanes-Oxley Act of 2002

In connection with the Quarterly Report of STAG Industrial, Inc. on Form 10-Q for the period ended June 30, 2021 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), the undersigned officers of STAG Industrial, Inc., certify, pursuant to 18 U.S.C. section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that:

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

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

Date: July 27, 2021	/s/ BENJAMIN S. BUTCHER
	Benjamin S. Butcher Chairman and Chief Executive Officer
	/s/ WILLIAM R. CROOKER
	William R. Crooker President, Chief Financial Officer and Treasurer

XML

Document and Entity Information - shares	6 Months Ended
	Jun. 30, 2021	Jul. 26, 2021
Entity Information [Line Items]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Jun. 30, 2021
Document Transition Report	false
Entity File Number	1-34907
Entity Registrant Name	STAG Industrial, Inc.
Entity Incorporation, State or Country Code	MD
Entity Tax Identification Number	27-3099608
Entity Address, Address Line One	One Federal Street
Entity Address, Address Line Two	23rd Floor
Entity Address, City or Town	Boston,
Entity Address, State or Province	MA
Entity Address, Postal Zip Code	02110
City Area Code	617
Local Phone Number	574-4777
Title of 12(b) Security	Common stock, $0.01 par value per share
Trading Symbol	STAG
Security Exchange Name	NYSE
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Central Index Key	0001479094
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	Q2
Amendment Flag	false
Entity Common Stock, Shares Outstanding		162,038,478
Entity Central Index Key	0001479094
Current Fiscal Year End Date	--12-31

XML

Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Rental Property:
Land	$ 510,413	$ 492,783
Buildings and improvements, net of accumulated depreciation of $552,967 and $495,348, respectively	3,630,823	3,532,608
Deferred leasing intangibles, net of accumulated amortization of $260,893 and $258,005, respectively	482,672	499,802
Total rental property, net	4,623,908	4,525,193
Cash and cash equivalents	14,588	15,666
Restricted cash	3,927	4,673
Tenant accounts receivable	83,262	77,796
Prepaid expenses and other assets	51,639	43,471
Interest rate swaps	1,704	0
Operating lease right-of-use assets	24,634	25,403
Assets held for sale, net	2,737	444
Total assets	4,806,399	4,692,646
Liabilities:
Unsecured credit facility	284,000	107,000
Unsecured term loans, net	970,930	971,111
Unsecured notes, net	573,390	573,281
Mortgage notes, net	55,811	51,898
Accounts payable, accrued expenses and other liabilities	65,269	69,765
Interest rate swaps	28,795	40,656
Tenant prepaid rent and security deposits	30,732	27,844
Dividends and distributions payable	19,803	19,379
Deferred leasing intangibles, net of accumulated amortization of $17,510 and $15,759, respectively	32,929	32,762
Operating lease liabilities	27,838	27,898
Total liabilities	2,089,497	1,921,594
Preferred Stock, Number of Shares, Par Value and Other Disclosures [Abstract]
Preferred stock	0	75,000
Common stock, par value $0.01 per share, 300,000,000 shares authorized at June 30, 2021 and December 31, 2020, respectively, 160,315,538 and 158,209,823 shares issued and outstanding at June 30, 2021 and December 31, 2020, respectively	1,603	1,582
Additional paid-in capital	3,486,942	3,421,721
Cumulative dividends in excess of earnings	(804,113)	(742,071)
Accumulated other comprehensive loss	(26,742)	(40,025)
Stockholders' Equity Attributable to Parent, Total	2,657,690	2,716,207
Noncontrolling interest	59,212	54,845
Total equity	2,716,902	2,771,052
Total liabilities and equity	$ 4,806,399	$ 4,692,646

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Consolidated Balance Sheet (Parenthetical) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Building and Improvements, accumulated depreciation	$ 552,967	$ 495,348
Deferred leasing intangible assets, accumulated amortization	260,893	258,005
Deferred leasing intangible liabilities, accumulated amortization	$ 17,510	$ 15,759
Preferred Stock, Par or Stated Value Per Share	$ 0.01	$ 0.01
Preferred Stock, Shares Authorized	20,000,000	20,000,000
Preferred Stock, Shares Issued	0
Common Stock, Par or Stated Value Per Share	$ 0.01	$ 0.01
Common Stock, Shares Authorized	300,000,000	300,000,000
Common Stock, Shares, Issued	160,315,538	158,209,823
Common Stock, Shares, Outstanding	160,315,538	158,209,823
Series C Preferred Stock
Preferred Stock, Shares Issued	0	3,000,000
Preferred Stock, Shares Outstanding	0	3,000,000
Preferred Stock, Liquidation Preference Per Share		$ 25.00

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Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Revenues [Abstract]
Rental income	$ 137,805	$ 117,471	$ 271,630	$ 235,810
Other income	622	146	792	355
Total revenue	138,427	117,617	272,422	236,165
Expenses
Property	25,356	20,392	52,358	42,339
General and administrative	12,578	9,406	25,368	19,779
Depreciation and amortization	57,332	53,606	115,739	106,294
Other expenses	511	588	1,363	1,064
Total expenses	95,777	83,992	194,828	169,476
Other income (expense)
Interest and other income	30	156	62	235
Interest expense	(15,273)	(15,333)	(30,631)	(30,197)
Debt extinguishment and modification expenses	0	(834)	(679)	(834)
Gain on involuntary conversion	0	657	0	657
Gain on the sales of rental property, net	5,976	1,045	12,385	47,804
Total other income (expense)	(9,267)	(14,309)	(18,863)	17,665
Net income	33,383	19,316	58,731	84,354
Less: income attributable to noncontrolling interest after preferred stock dividends	733	407	1,206	2,005
Net income attributable to STAG Industrial, Inc.	32,650	18,909	57,525	82,349
Less: preferred stock dividends	0	1,289	1,289	2,578
Less: redemption of preferred stock	0	0	2,582	0
Less: amount allocated to participating securities	74	68	147	136
Net income attributable to common stockholders	$ 32,576	$ 17,552	$ 53,507	$ 79,635
Weighted average common shares outstanding — basic	159,736	148,663	159,086	148,116
Weighted average common shares outstanding — diluted	161,367	149,027	160,249	148,341
Net income per share — basic and diluted
Net income per share attributable to common stockholders — basic	$ 0.20	$ 0.12	$ 0.34	$ 0.54
Net income per share attributable to common stockholders — diluted	$ 0.20	$ 0.12	$ 0.33	$ 0.54

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Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Statement of Comprehensive Income [Abstract]
Net income	$ 33,383	$ 19,316	$ 58,731	$ 84,354
Other comprehensive income (loss):
Income (loss) on interest rate swaps	1,432	(2,009)	13,582	(32,200)
Other comprehensive income (loss)	1,432	(2,009)	13,582	(32,200)
Comprehensive income	34,815	17,307	72,313	52,154
Income attributable to noncontrolling interest after preferred stock dividends	(733)	(407)	(1,206)	(2,005)
Other comprehensive (income) loss attributable to noncontrolling interest	(31)	32	(299)	789
Comprehensive income attributable to STAG Industrial, Inc.	$ 34,051	$ 16,932	$ 70,808	$ 50,938

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Consolidated Statements of Equity - USD ($) $ in Thousands	Total	Preferred Stock	Common Stock	Additional Paid-in Capital	Cumulative Dividends in excess of Earnings	Accumulated Other Comprehensive Income (Loss)	Total Stockholders' Equity	Noncontrolling Interest - Unit holders in Operating Partnership
Balance at Dec. 31, 2019	$ 2,363,891	$ 75,000	$ 1,428	$ 2,970,553	$ (723,027)	$ (18,426)	$ 2,305,528	$ 58,363
Balance (in shares) at Dec. 31, 2019			142,815,593
Increase (Decrease) in Stockholders' Equity
Proceeds from sales of common stock, net	172,656		$ 56	172,600			172,656
Proceeds from sales of common stock (in shares)			5,600,000
Dividends, Common Stock					(109,702)
Dividends							(109,702)
Distribution Made to Limited Partner, Cash Distributions Declared								(3,001)
Dividends and Distributions, Net	(112,703)
Non-cash compensation activity, net	4,319			1,112			723	3,596
Non-cash compensation activity (in shares)			77,798
Non-cash compensation activity (in excess of earnings)			$ (1)		(390)
Redemption of common units to common stock			$ (4)	(7,082)			(7,086)	(7,086)
Redemption of common units to common stock (in shares)			447,730
Rebalancing of noncontrolling interest				(3,184)			(3,184)	3,184
Other comprehensive income	(32,200)					(31,411)	(31,411)	(789)
Net income	84,354				82,349		82,349	2,005
Balance at Jun. 30, 2020	2,480,317	75,000	$ 1,489	3,148,163	(750,770)	(49,837)	2,424,045	56,272
Balance (in shares) at Jun. 30, 2020			148,941,121
Balance at Dec. 31, 2019	2,363,891	75,000	$ 1,428	2,970,553	(723,027)	(18,426)	2,305,528	58,363
Balance (in shares) at Dec. 31, 2019			142,815,593
Balance at Dec. 31, 2020	2,771,052	75,000	$ 1,582	3,421,721	(742,071)	(40,025)	2,716,207	54,845
Balance (in shares) at Dec. 31, 2020			158,209,823
Balance at Mar. 31, 2020	2,517,114	75,000	$ 1,487	3,142,495	(714,799)	(47,860)	2,456,323	60,791
Balance (in shares) at Mar. 31, 2020			148,708,031
Increase (Decrease) in Stockholders' Equity
Proceeds from sales of common stock, net	(67)		$ 0	(67)			(67)
Proceeds from sales of common stock (in shares)			0
Dividends, Common Stock					(54,880)
Dividends							(54,880)
Distribution Made to Limited Partner, Cash Distributions Declared								(2,105)
Dividends and Distributions, Net	(56,985)
Non-cash compensation activity, net	2,948			1,970			1,970	978
Non-cash compensation activity (in shares)			4,750
Non-cash compensation activity (in excess of earnings)			$ 0		0
Redemption of common units to common stock			$ (2)	(3,656)			(3,658)	(3,658)
Redemption of common units to common stock (in shares)			228,340
Rebalancing of noncontrolling interest				109			109	(109)
Other comprehensive income	(2,009)					(1,977)	(1,977)	(32)
Net income	19,316				18,909		18,909	407
Balance at Jun. 30, 2020	2,480,317	75,000	$ 1,489	3,148,163	(750,770)	(49,837)	2,424,045	56,272
Balance (in shares) at Jun. 30, 2020			148,941,121
Balance at Dec. 31, 2020	2,771,052	75,000	$ 1,582	3,421,721	(742,071)	(40,025)	2,716,207	$ 54,845
Balance (in shares) at Dec. 31, 2020			158,209,823
Increase (Decrease) in Stockholders' Equity
Redemption of common units to common stock (in shares)								0
Balance at Mar. 31, 2021	2,698,116	0	$ 1,591	3,443,787	(778,727)	(28,143)	2,638,508	$ 59,608
Balance (in shares) at Mar. 31, 2021			159,082,448
Balance at Dec. 31, 2020	2,771,052	75,000	$ 1,582	3,421,721	(742,071)	(40,025)	2,716,207	54,845
Balance (in shares) at Dec. 31, 2020			158,209,823
Increase (Decrease) in Stockholders' Equity
Proceeds from sales of common stock, net	63,359		$ 19	63,340			63,359
Proceeds from sales of common stock (in shares)			1,888,290
Redemption of preferred stock	(75,009)	(75,000)		(2,573)	(2,582)		(75,009)
Dividends, Common Stock					(116,864)
Dividends							(116,864)
Distribution Made to Limited Partner, Cash Distributions Declared								5,761
Dividends and Distributions, Net	(122,625)
Non-cash compensation activity, net	7,812			(1,022)			(1,142)	8,954
Non-cash compensation activity (in shares)			98,091
Non-cash compensation activity (in excess of earnings)			$ (1)		(121)
Redemption of common units to common stock			$ (1)	(1,990)			(1,991)	$ (1,991)
Redemption of common units to common stock (in shares)			119,334					0
Rebalancing of noncontrolling interest				(1,660)			(1,660)	$ 1,660
Other comprehensive income	13,582					13,283	13,283	299
Net income	58,731				57,525		57,525	1,206
Balance at Jun. 30, 2021	2,716,902	0	$ 1,603	3,486,942	(804,113)	(26,742)	2,657,690	59,212
Balance (in shares) at Jun. 30, 2021			160,315,538
Balance at Mar. 31, 2021	2,698,116	0	$ 1,591	3,443,787	(778,727)	(28,143)	2,638,508	59,608
Balance (in shares) at Mar. 31, 2021			159,082,448
Increase (Decrease) in Stockholders' Equity
Proceeds from sales of common stock, net	41,793		$ 12	41,781			41,793
Proceeds from sales of common stock (in shares)			1,208,014
Dividends, Common Stock					(58,036)
Dividends							(58,036)
Distribution Made to Limited Partner, Cash Distributions Declared								(4,325)
Dividends and Distributions, Net	(62,361)
Non-cash compensation activity, net	4,539			2,192			2,192	2,347
Non-cash compensation activity (in shares)			2,901
Non-cash compensation activity (in excess of earnings)			$ 0		0
Redemption of common units to common stock			$ 0	(368)			(368)	(368)
Redemption of common units to common stock (in shares)			22,175
Rebalancing of noncontrolling interest				(1,186)			(1,186)	1,186
Other comprehensive income	1,432					1,401	1,401	31
Net income	33,383				32,650		32,650	733
Balance at Jun. 30, 2021	$ 2,716,902	$ 0	$ 1,603	$ 3,486,942	$ (804,113)	$ (26,742)	$ 2,657,690	$ 59,212
Balance (in shares) at Jun. 30, 2021			160,315,538

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Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Cash flows from operating activities:
Net income	$ 58,731	$ 84,354
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	115,739	106,294
Gain on involuntary conversion	0	657
Non-cash portion of interest expense	1,276	1,422
Gain (Loss) on Extinguishment of Debt, before Write off of Debt Issuance Cost	0	(834)
Amortization of above and below market leases, net	1,799	2,152
Straight-line rent adjustments, net	(8,887)	(5,498)
Gain on the sales of rental property, net	(12,385)	(47,804)
Non-cash compensation expense	9,154	5,790
Change in assets and liabilities:
Tenant accounts receivable	3,212	(475)
Prepaid expenses and other assets	(10,018)	(4,116)
Accounts payable, accrued expenses and other liabilities	864	3,243
Tenant prepaid rent and security deposits	2,888	2,549
Total adjustments	103,642	63,734
Net cash provided by operating activities	162,373	148,088
Cash flows from investing activities:
Acquisitions of land and buildings and improvements	(194,164)	(110,121)
Additions of land and building and improvements	(18,913)	(27,299)
Acquisitions of other assets	0	450
Proceeds from sales of rental property, net	39,619	101,881
Proceeds from involuntary conversion	0	782
Acquisition deposits, net	(877)	660
Acquisitions of deferred leasing intangibles	(27,682)	(20,542)
Net cash used in investing activities	(202,017)	(55,089)
Cash flows from financing activities:
Proceeds from unsecured credit facility	765,000	387,000
Repayment of unsecured credit facility	(588,000)	(533,000)
Proceeds from unsecured term loans	300,000	400,000
Repayment of unsecured term loans	(300,000)	(300,000)
Repayment of mortgage notes	(1,093)	(1,993)
Payment of loan fees and costs	2,847	1,129
Payment for Debt Extinguishment or Debt Prepayment Cost	0	425
Proceeds from sales of common stock, net	63,314	172,626
Redemption of preferred stock	(75,000)	0
Dividends and distributions	122,212	111,868
Repurchase and retirement of share-based compensation	(1,342)	(1,472)
Net cash provided by financing activities	37,820	9,739
Increase (decrease) in cash and cash equivalents and restricted cash	(1,824)	102,738
Cash and cash equivalents and restricted cash—beginning of period	20,339	11,864
Cash and cash equivalents and restricted cash—end of period	18,515	114,602
Supplemental disclosure:
Cash paid for interest, net of capitalized interest	29,574	28,520
Supplemental schedule of non-cash investing and financing activities
Acquisitions of land and buildings and improvements	4,239	111
Acquisitions of deferred leasing intangibles	703	33
Change in additions of land, building, and improvements included in accounts payable, accrued expenses, and other liabilities	3,469	683
Additions to building and other capital improvements from non-cash compensation	0	(17)
Assumption of mortgage notes	5,103	0
Fair market value adjustment to mortgage notes acquired	(161)	0
Change in loan fees, costs, and offering costs included in accounts payable, accrued expenses, and other liabilities	1,016	1,020
Dividends and distributions payable	$ 19,803	$ 18,301

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Organization and Description of Business

6 Months Ended

Jun. 30, 2021

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Organization and Description of Business

Organization and Description of Business

STAG Industrial, Inc. (the “Company”) is an industrial real estate operating company focused on the acquisition and operation of single-tenant, industrial properties throughout the United States. The Company was formed as a Maryland corporation and has elected to be treated and intends to continue to qualify as a real estate investment trust (“REIT”) under Sections 856 through 860 of the Internal Revenue Code of 1986, as amended. The Company is structured as an umbrella partnership REIT, commonly called an UPREIT, and owns substantially all of its assets and conducts substantially all of its business through its operating partnership, STAG Industrial Operating Partnership, L.P., a Delaware limited partnership (the “Operating Partnership”). As of June 30, 2021 and December 31, 2020, the Company owned a 97.8% and 98.0%, respectively, common equity interest in the Operating Partnership. The Company, through its wholly owned subsidiary, is the sole general partner of the Operating Partnership. As used herein, the “Company” refers to STAG Industrial, Inc. and its consolidated subsidiaries and partnerships, including the Operating Partnership, except where context otherwise requires.

As of June 30, 2021, the Company owned 501 buildings in 39 states with approximately 100.1 million rentable square feet, consisting of 421 warehouse/distribution buildings, 73 light manufacturing buildings, and seven flex/office buildings.

COVID-19 Pandemic

Currently, one of the most significant risks and uncertainties facing the Company and the real estate industry generally is the potential adverse effect of the ongoing public health crisis of the novel coronavirus disease (“COVID-19”) pandemic.

The Company closely monitors the effect of the COVID-19 pandemic on all aspects of its business, including how the pandemic will affect its tenants and business partners. The Company did not incur significant disruptions from the COVID-19 pandemic during the three and six months ended June 30, 2021. In addition, the Company did not enter into any rent deferral agreements during the three and six months ended June 30, 2021. The Company will continue to evaluate tenant rent relief requests on an individual basis, considering a number of factors. Not all tenant requests will ultimately result in modified agreements, nor is the Company foregoing its contractual rights under its lease agreements.

The Company remains unable to predict the ultimate impact that the pandemic will have on its financial condition, results of operations and cash flows due to numerous uncertainties. The extent to which the COVID-19 pandemic affects the Company’s operations and those of its tenants will depend on future developments, which are highly uncertain and cannot be predicted with confidence, including the scope, severity and duration of the pandemic, the actions taken to contain the pandemic or mitigate its impact, and the direct and indirect economic effects of the pandemic and containment measures, among others.

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Summary of Significant Accounting Policies

6 Months Ended

Jun. 30, 2021

Accounting Policies [Abstract]

Summary of Significant Accounting Policies

Summary of Significant Accounting Policies

Interim Financial Information

The accompanying interim financial statements have been presented in conformity with accounting principles generally accepted in the United States of America (“GAAP”) and with the instructions to Form 10-Q and Regulation S-X for interim financial information. Accordingly, these statements do not include all of the information and notes required by GAAP for complete financial statements. In the opinion of management, the accompanying interim financial statements include all adjustments, consisting of normal recurring items, necessary for their fair statement in conformity with GAAP. Interim results are not necessarily indicative of results for a full year. The year-end consolidated balance sheet data was derived from audited financial statements, but does not include all disclosures required by GAAP. The information included in this Quarterly Report on Form 10-Q should be read in conjunction with the Company’s consolidated financial statements and notes thereto contained in the Company’s Annual Report on Form 10-K for the fiscal year ended December 31, 2020.

Basis of Presentation

The Company’s consolidated financial statements include the accounts of the Company, the Operating Partnership, and their subsidiaries. Interests in the Operating Partnership not owned by the Company are referred to as “Noncontrolling Common Units.” These Noncontrolling Common Units are held by other limited partners in the form of common units (“Other Common Units”) and long term incentive plan units (“LTIP units”) issued pursuant to the STAG Industrial, Inc. 2011 Equity Incentive Plan, as amended and restated (the “2011 Plan”). All significant intercompany balances and transactions have been eliminated in the consolidation of entities. The financial statements of the Company are presented on a consolidated basis for all periods presented.

Restricted Cash

The following table presents a reconciliation of cash and cash equivalents and restricted cash reported on the accompanying Consolidated Balance Sheets to amounts reported on the accompanying Consolidated Statements of Cash Flows.

Reconciliation of cash and cash equivalents and restricted cash (in thousands)	June 30, 2021		December 31, 2020
Cash and cash equivalents	$	14,588	$	15,666
Restricted cash	3,927		4,673
Total cash and cash equivalents and restricted cash	$	18,515	$	20,339

Incentive and Equity-Based Employee Compensation Plans

On January 7, 2021, the Company adopted the STAG Industrial, Inc. Employee Retirement Vesting Program (the “Vesting Program”) to provide supplemental retirement benefits for eligible employees. For those employees who are retirement eligible or will become retirement eligible during the applicable vesting period under the terms of the Vesting Program, the Company accelerates equity-based compensation through the employee’s six-month retirement notification period or retirement eligibility date, respectively. The adoption of the Vesting Program resulted in an increase to general and administrative expenses of approximately $1.4 million and $2.9 million for the three and six months ended June 30, 2021, respectively, due to the acceleration of equity-based compensation expense for certain eligible employees. The Company estimates that the adoption of the Vesting Program will result in an increase in general and administrative expenses of approximately $2.4 million for the year ending December 31, 2021.

Taxes

Federal Income Taxes

The Company’s taxable REIT subsidiary recognized net loss of approximately $4,000, $4,000, $0 and $0 for the three and six months ended June 30, 2021 and 2020, respectively.

State and Local Income, Excise, and Franchise Tax

State and local income, excise, and franchise taxes in the amount of $0.4 million, $0.8 million, $0.5 million and $0.9 million have been recorded in other expenses on the accompanying Consolidated Statements of Operations for the three and six months ended June 30, 2021 and 2020, respectively.

Uncertain Tax Positions

As of June 30, 2021 and December 31, 2020, there were no liabilities for uncertain tax positions.

Concentrations of Credit Risk

Management believes the current credit risk of the Company’s portfolio is reasonably well diversified and does not contain any unusual concentration of credit risk.

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Rental Property

6 Months Ended

Jun. 30, 2021

Real Estate [Abstract]

Rental Property

Rental Property

The following table summarizes the components of rental property as of June 30, 2021 and December 31, 2020.

Rental Property (in thousands)	June 30, 2021		December 31, 2020
Land	$	510,413	$	492,783
Buildings, net of accumulated depreciation of $366,571 and $327,043, respectively	3,306,299		3,195,439
Tenant improvements, net of accumulated depreciation of $25,078 and $24,891, respectively	41,000		43,684
Building and land improvements, net of accumulated depreciation of $161,318 and $143,414, respectively	278,759		275,433
Construction in progress	4,765		18,052
Deferred leasing intangibles, net of accumulated amortization of $260,893 and $258,005, respectively	482,672		499,802
Total rental property, net	$	4,623,908	$	4,525,193

Acquisitions

The following table summarizes the acquisitions of the Company during the three and six months ended June 30, 2021. The Company accounted for all of its acquisitions as asset acquisitions.

Market (1)	Date Acquired	Square Feet	Number of Buildings	Purchase Price (in thousands)
Omaha/Council Bluffs, NE-IA	January 21, 2021	370,000	1	$	24,922
Minneapolis/St Paul, MN	February 24, 2021	80,655	1	10,174
Long Island, NY	February 25, 2021	64,224	1	8,516
Sacramento, CA	February 25, 2021	267,284	1	25,917
Little Rock/N Little Rock	March 1, 2021	300,160	1	24,317
Cleveland, OH	March 18, 2021	170,000	1	6,382
Three months ended March 31, 2021		1,252,323	6	100,228
Indianapolis, IN	May 17, 2021	154,440	1	13,655
Baltimore, MD	May 17, 2021	46,851	1	6,228
Detroit, MI	June 1, 2021	248,040	1	23,786
Green Bay, WI	June 7, 2021	152,000	1	7,249
Phoenix, AZ	June 14, 2021	41,504	1	8,670
Cleveland, OH	June 17, 2021	179,577	1	19,602
Reno/Sparks, NV	June 30, 2021	183,435	1	13,892
Washington, DC	June 30, 2021	193,420	1	17,521
Stockton/Modesto, CA	June 30, 2021	150,000	1	16,118
Three months ended June 30, 2021		1,349,267	9	126,721
Six months ended June 30, 2021		2,601,590	15	$	226,949

(1) As defined by CoStar Realty Information Inc (“CoStar”). If the building is located outside of a CoStar defined market, the city and state is reflected.

The following table summarizes the allocation of the consideration paid at the date of acquisition during the six months ended June 30, 2021 for the acquired assets and liabilities in connection with the acquisitions identified in the table above.

Acquired Assets and Liabilities	Purchase Price (in thousands)		Weighted Average Amortization Period (years) of Intangibles at Acquisition
Land	$	21,844	N/A
Buildings	165,549		N/A
Tenant improvements	1,575		N/A
Building and land improvements	9,435		N/A
Deferred leasing intangibles - In-place leases	20,206		8.5
Deferred leasing intangibles - Tenant relationships	9,761		11.4
Deferred leasing intangibles - Above market leases	2,279		13.8
Deferred leasing intangibles - Below market leases	(3,861)		6.4
Below market assumed debt adjustment	161		18.8
Total purchase price	$	226,949
Less: Mortgage notes assumed	(5,103)
Net assets acquired	$	221,846

On February 25, 2021, the Company assumed a mortgage note of approximately $5.1 million in connection with the acquisition of the property located in Long Island, NY. For a discussion of the method used to determine the fair value of the mortgage note, see Note 4.

The following table summarizes the results of operations for the three and six months ended June 30, 2021 for the buildings acquired during the six months ended June 30, 2021 included in the Company’s Consolidated Statements of Operations from the date of acquisition.

Results of Operations (in thousands)	Three months ended June 30, 2021		Six months ended June 30, 2021
Total revenue	$	2,219	$	3,506
Net income	$	284	$	307

Dispositions

During the six months ended June 30, 2021, the Company sold six buildings to third parties comprised of approximately 0.9 million rentable square feet with a net book value of approximately $27.2 million. These buildings contributed approximately $0.2 million, $0.5 million, $1.1 million and $2.1 million to revenue for the three and six months ended June 30, 2021 and 2020, respectively. These buildings contributed approximately $0.1 million, $0.1 million, $0.5 million and $0.8 million to net income (exclusive of gain on the sales of rental property, net) for the three and six months ended June 30, 2021 and 2020, respectively. Net proceeds from the sales of rental property were approximately $39.6 million and the Company recognized the full gain on the sales of rental property, net, of approximately $12.4 million for the six months ended June 30, 2021.

Assets Held for Sale

As of June 30, 2021, the related land, building and improvements, net, and deferred leasing intangibles, net, of approximately $0.8 million, $1.9 million, and $0, respectively, for one building located in Charlotte, NC were classified as assets held for sale, net on the accompanying Consolidated Balance Sheets. This building contributed approximately $0.1 million, $0.3 million, $0.2 million and $0.3 million to revenue for the three and six months ended June 30, 2021 and 2020, respectively. This building contributed approximately $0.1 million, $0.2 million, $0.1 million and $0.1 million to net income for the three and six months ended June 30, 2021 and 2020, respectively.

Gain on Involuntary Conversion

During the three and six months ended June 30, 2021, the Company did not recognize any gain on involuntary conversion. During the three and six months ended June 30, 2020, the Company recognized a gain on involuntary conversion of approximately $0.7 million related to an eminent domain taking of a portion of a parcel of land.

Deferred Leasing Intangibles

The following table summarizes the deferred leasing intangibles on the accompanying Consolidated Balance Sheets as of June 30, 2021 and December 31, 2020.

	June 30, 2021						December 31, 2020
Deferred Leasing Intangibles (in thousands)	Gross		Accumulated Amortization		Net		Gross		Accumulated Amortization		Net
Above market leases	$	86,466	$	(31,194)	$	55,272	$	92,125	$	(33,629)	$	58,496
Other intangible lease assets	657,099		(229,699)		427,400		665,682		(224,376)		441,306
Total deferred leasing intangible assets	$	743,565	$	(260,893)	$	482,672	$	757,807	$	(258,005)	$	499,802
Below market leases	$	50,439	$	(17,510)	$	32,929	$	48,521	$	(15,759)	$	32,762
Total deferred leasing intangible liabilities	$	50,439	$	(17,510)	$	32,929	$	48,521	$	(15,759)	$	32,762

The following table summarizes the amortization expense and the net decrease to rental income for the amortization of deferred leasing intangibles during the three and six months ended June 30, 2021 and 2020.

	Three months ended June 30,				Six months ended June 30,
Deferred Leasing Intangibles Amortization (in thousands)	2021		2020		2021		2020
Net decrease to rental income related to above and below market lease amortization	$	330	$	1,174	$	1,810	$	2,164
Amortization expense related to other intangible lease assets	$	21,422	$	21,076	$	43,869	$	41,378

The following table summarizes the amortization of deferred leasing intangibles over the next five calendar years beginning with 2021 as of June 30, 2021.

Year	Amortization Expense Related to Other Intangible Lease Assets (in thousands)		Net Decrease to Rental Income Related to Above and Below Market Lease Amortization (in thousands)
Remainder of 2021	$	38,884	$	283
2022	$	68,917	$	327
2023	$	60,313	$	820
2024	$	51,203	$	1,286
2025	$	43,445	$	1,164

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Debt

6 Months Ended

Jun. 30, 2021

Debt Disclosure [Abstract]

Debt

Debt

The following table summarizes the Company’s outstanding indebtedness, including borrowings under the Company’s unsecured credit facility, unsecured term loans, unsecured notes, and mortgage notes as of June 30, 2021 and December 31, 2020.

Loan	Principal Outstanding as of June 30, 2021 (in thousands)		Principal Outstanding as of December 31, 2020 (in thousands)		Interest  Rate(1)(2)		Maturity Date	Prepayment Terms(3)
Unsecured credit facility:
Unsecured Credit Facility(4)	$	284,000	$	107,000	L + 0.90%		January 12, 2024	i
Total unsecured credit facility	284,000		107,000
Unsecured term loans:
Unsecured Term Loan A	150,000		150,000		3.38	%	March 31, 2022	i
Unsecured Term Loan D	150,000		150,000		2.85	%	January 4, 2023	i
Unsecured Term Loan E	175,000		175,000		3.92	%	January 15, 2024	i
Unsecured Term Loan F	200,000		200,000		3.11	%	January 12, 2025	i
Unsecured Term Loan G	300,000		300,000		1.28	%	February 5, 2026	i
Total unsecured term loans	975,000		975,000
Total unamortized deferred financing fees and debt issuance costs	(4,070)		(3,889)
Total carrying value unsecured term loans, net	970,930		971,111
Unsecured notes:
Series F Unsecured Notes	100,000		100,000		3.98	%	January 5, 2023	ii
Series A Unsecured Notes	50,000		50,000		4.98	%	October 1, 2024	ii
Series D Unsecured Notes	100,000		100,000		4.32	%	February 20, 2025	ii
Series G Unsecured Notes	75,000		75,000		4.10	%	June 13, 2025	ii
Series B Unsecured Notes	50,000		50,000		4.98	%	July 1, 2026	ii
Series C Unsecured Notes	80,000		80,000		4.42	%	December 30, 2026	ii
Series E Unsecured Notes	20,000		20,000		4.42	%	February 20, 2027	ii
Series H Unsecured Notes	100,000		100,000		4.27	%	June 13, 2028	ii
Total unsecured notes	575,000		575,000
Total unamortized deferred financing fees and debt issuance costs	(1,610)		(1,719)
Total carrying value unsecured notes, net	573,390		573,281
Mortgage notes (secured debt):
Wells Fargo Bank, National Association CMBS Loan	47,580		48,546		4.31	%	December 1, 2022	iii
Thrivent Financial for Lutherans	3,494		3,556		4.78	%	December 15, 2023	iv
United of Omaha Life Insurance Company	5,040		—		3.71	%	October 1, 2039	ii
Total mortgage notes	56,114		52,102
Net unamortized fair market value premium (discount)	(134)		29
Total unamortized deferred financing fees and debt issuance costs	(169)		(233)
Total carrying value mortgage notes, net	55,811		51,898
Total / weighted average interest rate(5)	$	1,884,131	$	1,703,290	2.99	%

(1)Interest rate as of June 30, 2021. At June 30, 2021, the one-month LIBOR (“L”) was 0.10050%. The current interest rate is not adjusted to include the amortization of deferred financing fees or debt issuance costs incurred in obtaining debt or any unamortized fair market value premiums. The spread over the applicable rate for the Company’s unsecured credit facility and unsecured term loans is based on the Company’s debt rating, as defined in the respective loan agreements.

(2)The unsecured term loans have a stated interest rate of one-month LIBOR plus a spread of 1.0%. As of June 30, 2021, one-month LIBOR for the Unsecured Term Loans A, D, E, F, and G was swapped to a fixed rate of 2.38%, 1.85%, 2.92%, 2.11%, and 0.28%, respectively. One-month LIBOR for the Unsecured Term Loan G will be swapped to a fixed rate of 0.94% effective April 18, 2023.

(3)Prepayment terms consist of (i) pre-payable with no penalty; (ii) pre-payable with penalty; (iii) pre-payable without penalty three months prior to the maturity date, however can be defeased; and (iv) pre-payable without penalty three months prior to the maturity date.

(4)The capacity of the unsecured credit facility is $750.0 million. Deferred financing fees and debt issuance costs, net of accumulated amortization related to the unsecured credit facility of approximately $2.2 million and $1.6 million is included in prepaid expenses and other assets on the accompanying Consolidated Balance Sheets as of June 30, 2021 and December 31, 2020, respectively. The initial maturity date is January 15, 2023, which may be extended pursuant to two six-month extension options exercisable by the Company in its discretion upon advance written notice. Exercise of each six-month option is subject to the following conditions: (i) absence of a default immediately before the extension and immediately after giving effect to the extension, (ii) accuracy of representations and warranties as of the extension date (both immediately before and after the extension), as if made on the extension date, and (iii) payment of a fee. Neither extension option is subject to lender consent, assuming proper notice and satisfaction of the conditions.

(5)The weighted average interest rate was calculated using the fixed interest rate swapped on the notional amount of $975.0 million of debt, and is not adjusted to include the amortization of deferred financing fees or debt issuance costs incurred in obtaining debt or any unamortized fair market value premiums or discounts.

The aggregate undrawn nominal commitment on the unsecured credit facility as of June 30, 2021 was approximately $463.1 million, including issued letters of credit. The Company’s actual borrowing capacity at any given point in time may be less and is restricted to a maximum amount based on the Company’s debt covenant compliance. Total accrued interest for the Company’s indebtedness was approximately $6.3 million and $6.3 million as of June 30, 2021 and December 31, 2020, respectively, and is included in accounts payable, accrued expenses and other liabilities on the accompanying Consolidated Balance Sheets.

The following table summarizes the costs included in interest expense related to the Company’s debt arrangements on the accompanying Consolidated Statement of Operations for the three and six months ended June 30, 2021 and 2020.

	Three months ended June 30,				Six months ended June 30,
Costs Included in Interest Expense (in thousands)	2021		2020		2021		2020
Amortization of deferred financing fees and debt issuance costs and fair market value premiums/discounts	$	789	$	746	$	1,276	$	1,422
Facility, unused, and other fees	$	440	$	316	$	826	$	680

Subsequent to June 30, 2021, on July 8, 2021, the Company entered into a note purchase agreement for the future private placement by the Operating Partnership of $275.0 million senior unsecured notes, maturing September 29, 2031, with a fixed annual interest rate of 2.80%, and $50.0 million senior unsecured notes, maturing September 28, 2033, with a fixed annual interest rate of 2.95%. The notes are expected to be issued on or around September 28, 2021, subject to conditions.

On February 25, 2021, the Company assumed a mortgage note with United of Omaha Life Insurance Company of approximately $5.1 million in connection with the acquisition of the property located in Long Island, NY, which serves as collateral for the debt. The debt matures on October 1, 2039 and bears interest at 3.71% per annum. The assumed debt was recorded at fair value and a fair value discount of approximately $0.2 million was recorded during three months ended March 31, 2021. The fair value of debt was determined by discounting the future cash flows using the current rate of approximately 4.10% at which loans would be made to borrowers with similar credit ratings for loans with similar maturities, terms, and loan-to-value ratios. The fair value of the debt is based on Level 3 inputs and is a nonrecurring fair value measurement.

On February 5, 2021, the Company entered into an amendment to the unsecured credit facility (the “Credit Facility Amendment”). The Credit Facility Amendment provides for an increase in the aggregate commitments available for borrowing under the unsecured credit facility from $500 million to up to $750 million. As of June 30, 2021, the unsecured credit facility bore an interest rate of LIBOR plus a spread of 0.90% based on the Company’s debt rating, as defined in the loan agreement. In connection with the Credit Facility Amendment, the Company incurred approximately $1.2 million in costs which are being deferred and amortized through the maturity date of the unsecured credit facility. Other than the increase in the borrowing commitments, the material terms of the unsecured credit facility remain unchanged.

On February 5, 2021, the Company entered into an amendment to the Unsecured Term Loan G (the “Amendment to Unsecured Term Loan G”). The Amendment to Unsecured Term Loan G provides for an extension of the maturity date to February 5, 2026 and a reduced stated interest rate of one-month LIBOR plus a spread that ranges from 0.85% to 1.65% for LIBOR borrowings based on the Company’s debt ratings. The Amendment to Unsecured Term Loan G also amended the provision for a minimum interest rate, or floor, for LIBOR borrowings to 0.00% and for Base Rate borrowings to 1.00%. As of June 30, 2021, borrowings under the Unsecured Term Loan G bore interest at LIBOR plus 1.00%. In connection with the Amendment to Unsecured Term Loan G, the Company incurred approximately $1.6 million in costs which are being deferred and amortized through the new maturity date of February 5, 2026. The Company also incurred approximately $0.7 million of modification expenses which were recognized in debt extinguishment and modification expenses in the accompanying Consolidated Statements of Operations. Additionally, the Company reversed the previously accrued extension fees of approximately $1.1 million from the amendment to the Unsecured Term Loan G that was entered into on April 17, 2020, which resulted in a decrease to interest expense of approximately $0.3 million. Other than the maturity and interest rate provisions described above, the material terms of the Unsecured Term Loan G remain unchanged.

Financial Covenant Considerations

The Company was in compliance with all financial and other covenants as of June 30, 2021 and December 31, 2020 related to its unsecured credit facility, unsecured term loans, unsecured notes, and mortgage notes. The real estate net book value of the properties that are collateral for the Company’s debt arrangements was approximately $89.3 million and $81.4 million at June 30, 2021 and December 31, 2020, respectively, and is limited to senior, property-level secured debt financing arrangements.

Fair Value of Debt

The following table summarizes the aggregate principal outstanding under the Company’s debt arrangements and the corresponding estimate of fair value as of June 30, 2021 and December 31, 2020.

	June 30, 2021				December 31, 2020
Indebtedness (in thousands)	Principal Outstanding		Fair Value		Principal Outstanding		Fair Value
Unsecured credit facility	$	284,000	$	284,558	$	107,000	$	107,000
Unsecured term loans	975,000		979,222		975,000		978,448
Unsecured notes	575,000		627,036		575,000		628,575
Mortgage notes	56,114		58,435		52,102		54,485
Total principal amount	1,890,114		$	1,949,251	1,709,102		$	1,768,508
Net unamortized fair market value premium (discount)	(134)				29
Total unamortized deferred financing fees and debt issuance costs	(5,849)				(5,841)
Total carrying value	$	1,884,131			$	1,703,290

The applicable fair value guidance establishes a three tier value hierarchy, which prioritizes the inputs used in measuring fair value. These tiers include: Level 1, defined as observable inputs such as quoted prices in active markets; Level 2, defined as inputs other than quoted prices in active markets that are either directly or indirectly observable; and Level 3, defined as unobservable inputs in which little or no market data exists, therefore requiring an entity to develop its own assumptions. The fair value of the Company’s debt is based on Level 3 inputs.

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Derivative Financial Instruments

6 Months Ended

Jun. 30, 2021

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Derivative Financial Instruments

Derivative Financial Instruments

Risk Management Objective of Using Derivatives

The Company’s use of derivative instruments is limited to the utilization of interest rate swaps to manage interest rate risk exposure on existing and future liabilities and not for speculative purposes. The principal objective of such arrangements is to minimize the risks and related costs associated with the Company’s operating and financial structure.

The following table summarizes the Company’s outstanding interest rate swaps as of June 30, 2021. All of the Company’s interest rate swaps are designated as qualifying cash flow hedges.

Interest Rate Derivative Counterparty	Trade Date	Effective Date	Notional Amount (in thousands)		Fair Value (in thousands)		Pay Fixed Interest Rate		Receive Variable Interest Rate	Maturity Date
Wells Fargo Bank, N.A.	Jan-08-2015	Mar-20-2015	$	25,000	$	(324)	1.8280	%	One-month L	Mar-31-2022
The Toronto-Dominion Bank	Jan-08-2015	Feb-14-2020	$	25,000	$	(441)	2.4535	%	One-month L	Mar-31-2022
Regions Bank	Jan-08-2015	Feb-14-2020	$	50,000	$	(891)	2.4750	%	One-month L	Mar-31-2022
Capital One, N.A.	Jan-08-2015	Feb-14-2020	$	50,000	$	(912)	2.5300	%	One-month L	Mar-31-2022
The Toronto-Dominion Bank	Jul-20-2017	Oct-30-2017	$	25,000	$	(637)	1.8485	%	One-month L	Jan-04-2023
Royal Bank of Canada	Jul-20-2017	Oct-30-2017	$	25,000	$	(638)	1.8505	%	One-month L	Jan-04-2023
Wells Fargo Bank, N.A.	Jul-20-2017	Oct-30-2017	$	25,000	$	(638)	1.8505	%	One-month L	Jan-04-2023
PNC Bank, N.A.	Jul-20-2017	Oct-30-2017	$	25,000	$	(637)	1.8485	%	One-month L	Jan-04-2023
PNC Bank, N.A.	Jul-20-2017	Oct-30-2017	$	50,000	$	(1,273)	1.8475	%	One-month L	Jan-04-2023
The Toronto-Dominion Bank	Apr-20-2020	Sep-29-2020	$	75,000	$	(64)	0.2750	%	One-month L	Apr-18-2023
Wells Fargo Bank, N.A.	Apr-20-2020	Sep-29-2020	$	75,000	$	(70)	0.2790	%	One-month L	Apr-18-2023
The Toronto-Dominion Bank	Apr-20-2020	Mar-19-2021	$	75,000	$	(64)	0.2750	%	One-month L	Apr-18-2023
Wells Fargo Bank, N.A.	Apr-20-2020	Mar-19-2021	$	75,000	$	(71)	0.2800	%	One-month L	Apr-18-2023
The Toronto-Dominion Bank	Jul-24-2018	Jul-26-2019	$	50,000	$	(3,243)	2.9180	%	One-month L	Jan-12-2024
PNC Bank, N.A.	Jul-24-2018	Jul-26-2019	$	50,000	$	(3,243)	2.9190	%	One-month L	Jan-12-2024
Bank of Montreal	Jul-24-2018	Jul-26-2019	$	50,000	$	(3,243)	2.9190	%	One-month L	Jan-12-2024
U.S. Bank, N.A.	Jul-24-2018	Jul-26-2019	$	25,000	$	(1,622)	2.9190	%	One-month L	Jan-12-2024
Wells Fargo Bank, N.A.	May-02-2019	Jul-15-2020	$	50,000	$	(2,932)	2.2460	%	One-month L	Jan-15-2025
U.S. Bank, N.A.	May-02-2019	Jul-15-2020	$	50,000	$	(2,932)	2.2459	%	One-month L	Jan-15-2025
Regions Bank	May-02-2019	Jul-15-2020	$	50,000	$	(2,930)	2.2459	%	One-month L	Jan-15-2025
Bank of Montreal	Jul-16-2019	Jul-15-2020	$	50,000	$	(1,990)	1.7165	%	One-month L	Jan-15-2025
U.S. Bank, N.A.	Feb-17-2021	Apr-18-2023	$	150,000	$	848	0.9385	%	One-month L	Feb-5-2026
Wells Fargo Bank, N.A.	Feb-17-2021	Apr-18-2023	$	75,000	$	428	0.9365	%	One-month L	Feb-5-2026
The Toronto-Dominion Bank	Feb-17-2021	Apr-18-2023	$	75,000	$	428	0.9360	%	One-month L	Feb-5-2026

The following table summarizes the fair value of the interest rate swaps outstanding as of June 30, 2021 and December 31, 2020.

Balance Sheet Line Item (in thousands)	Notional Amount June 30, 2021		Fair Value June 30, 2021		Notional Amount December 31, 2020		Fair Value December 31, 2020
Interest rate swaps-Asset	$	300,000	$	1,704	$	—	$	—
Interest rate swaps-Liability	$	975,000	$	(28,795)	$	1,125,000	$	(40,656)

Cash Flow Hedges of Interest Rate Risk

The Company’s objectives in using interest rate swaps are to add stability to interest expense and to manage its exposure to interest rate movements. 

For derivatives designated and that qualify as cash flow hedges of interest rate risk, the gain or loss on the derivative is recorded in accumulated other comprehensive income (loss) and subsequently reclassified into interest expense in the same periods during which the hedged transaction affects earnings.

Amounts reported in accumulated other comprehensive income (loss) related to derivatives designated as qualifying cash flow hedges will be reclassified to interest expense as interest payments are made on the Company’s variable rate debt. The Company estimates that approximately $14.6 million will be reclassified from accumulated other comprehensive loss as an increase to interest expense over the next 12 months.

The following table summarizes the effect of cash flow hedge accounting and the location in the consolidated financial statements for the three and six months ended June 30, 2021 and 2020.

	Three months ended June 30,				Six months ended June 30,
Effect of Cash Flow Hedge Accounting (in thousands)	2021		2020		2021		2020
Income (loss) recognized in accumulated other comprehensive loss on interest rate swaps	$	(2,501)	$	(5,249)	$	5,249	$	(36,336)
Loss reclassified from accumulated other comprehensive loss into income as interest expense	$	3,933	$	3,240	$	8,333	$	4,136
Total interest expense presented in the Consolidated Statements of Operations in which the effects of cash flow hedges are recorded	$	15,273	$	15,333	$	30,631	$	30,197

Credit-risk-related Contingent Features

The Company has agreements with each of its derivative counterparties that contain a provision where the Company could be declared in default on its derivative obligations if repayment of the underlying indebtedness is accelerated by the lender due to the Company’s default on the indebtedness.

As of June 30, 2021, the Company had not breached the provisions of these agreements and had not posted any collateral related to these agreements. If the Company had breached any of these provisions at June 30, 2021, it could have been required to settle its obligations under the agreement of the interest rate swaps in a net liability position by counterparty plus accrued interest for approximately $27.8 million.

Fair Value of Interest Rate Swaps

The Company’s valuation of the interest rate swaps is determined using widely accepted valuation techniques including discounted cash flow analysis on the expected cash flows of each derivative. This analysis reflects the contractual terms of the derivatives, including the period to maturity, and uses observable market-based inputs including interest rate curves.

The Company incorporates credit valuation adjustments to appropriately reflect both its own nonperformance risk and the respective counterparty’s nonperformance risk in the fair value measurements. In adjusting the fair value of its derivative contracts for the effect of nonperformance risk, the Company has considered the impact of netting and any applicable credit enhancements, such as collateral postings, thresholds, mutual puts, and guarantees.

Although the Company has determined that the majority of the inputs used to value its derivatives fall within Level 2 of the fair value hierarchy, the credit valuation adjustments associated with its derivatives utilize Level 3 inputs, such as estimates of current credit spreads to evaluate the likelihood of default by itself and its counterparties. However, as of June 30, 2021 and December 31, 2020, the Company has assessed the significance of the impact of the credit valuation adjustments on the overall valuation of its derivative positions and has determined that the credit valuation adjustments are not significant to the overall valuation of its derivatives. As a result, the Company has determined that its derivative valuations in their entirety are classified in Level 2 of the fair value hierarchy.

The following table summarizes the Company’s financial instruments that are accounted for at fair value on a recurring basis as of June 30, 2021 and December 31, 2020. 

			Fair Value Measurements as of June 30, 2021 Using
Balance Sheet Line Item (in thousands)	Fair Value June 30, 2021		Level 1		Level 2		Level 3
Interest rate swaps-Asset	$	1,704	$	—	$	1,704	$	—
Interest rate swaps-Liability	$	(28,795)	$	—	$	(28,795)	$	—

			Fair Value Measurements as of December 31, 2020 Using
Balance Sheet Line Item (in thousands)	Fair Value December 31, 2020		Level 1		Level 2		Level 3
Interest rate swaps-Asset	$	—	$	—	$	—	$	—
Interest rate swaps-Liability	$	(40,656)	$	—	$	(40,656)	$	—

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Equity

6 Months Ended

Jun. 30, 2021

Stockholders' Equity Note [Abstract]

Equity

Equity

Preferred Stock

On March 1, 2021, the Company gave notice to redeem all 3,000,000 issued and outstanding shares of the 6.875% Series C Cumulative Redeemable Preferred Stock ("Series C Preferred Stock") on March 31, 2021. The Company redeemed the Series C Preferred Stock on March 31, 2021 at a cash redemption price of $25.00 per share, plus accrued and unpaid dividends to but excluding, the redemption date. The Company recognized a deemed dividend to the holders of the Series C Preferred Stock of approximately $2.6 million on the accompanying Consolidated Statements of Operations for the six months ended June 30, 2021 related to redemption costs and the original issuance costs of the Series C Preferred Stock.

The Company has no outstanding preferred stock issuances as of June 30, 2021.

The following tables summarize the dividends attributable to the Company’s outstanding preferred stock issuances during the three months ended March 31, 2021 and the year ended December 31, 2020.

Quarter Ended 2021	Declaration Date	Series C Preferred Stock Per Share		Payment Date
March 31	January 11, 2021	$	0.4296875	March 31, 2021
Total		$	0.4296875

Quarter Ended 2020	Declaration Date	Series C Preferred Stock Per Share		Payment Date
December 31	October 9, 2020	$	0.4296875	December 31, 2020
September 30	July 9, 2020	0.4296875		September 30, 2020
June 30	April 9, 2020	0.4296875		June 30, 2020
March 31	January 8, 2020	0.4296875		March 31, 2020
Total		$	1.7187500

Common Stock

The following table summarizes the terms of the Company’s at-the market (“ATM”) common stock offering program as of June 30, 2021.

ATM Common Stock Offering Program	Date	Maximum Aggregate Offering Price (in thousands)		Aggregate Common Stock Available as of June 30, 2021 (in thousands)
2019 $600 million ATM	February 14, 2019	$	600,000	$	204,023

The table below summarizes the activity under the ATM common stock offering program during the six months ended June 30, 2021 (in thousands, except share data). There was no activity under the ATM common stock offering program during the year ended December 31, 2020.

	Six months ended June 30, 2021
ATM Common Stock Offering Program(1)	Shares Sold	Weighted Average Price Per Share		Net Proceeds
2019 $600 million ATM	1,888,290	$	34.01	$	63,583
Total/weighted average	1,888,290	$	34.01	$	63,583

(1)Includes transactions settled during the period and excludes ATM issuances on a forward basis.

On April 5, 2021, the Company sold 1,446,760 shares on a forward basis under the ATM common stock offering program at a price of $34.56 per share, or $50.0 million, and $34.2144 per share net of sales agent fees. The Company does not initially receive any proceeds from the sale of shares on a forward basis. The Company may elect to cash settle or net share settle the forward sale agreement at any time through the scheduled maturity date of April 5, 2022.

Subsequent to June 30, 2021, the Company sold 1,719,849 shares under the ATM common stock offering program at a price of $37.98 per share, or $65.3 million, and $37.67 per share net of sales agent fees.

The following tables summarize the dividends attributable to the Company’s outstanding shares of common stock that were declared during the six months ended June 30, 2021 and the year ended December 31, 2020.

Month Ended 2021	Declaration Date	Record Date	Per Share		Payment Date
June 30	April 12, 2021	June 30, 2021	$	0.120833	July 15, 2021
May 31	April 12, 2021	May 28, 2021	0.120833		June 15, 2021
April 30	April 12, 2021	April 30, 2021	0.120833		May 17, 2021
March 31	January 11, 2021	March 31, 2021	0.120833		April 15, 2021
February 28	January 11, 2021	February 26, 2021	0.120833		March 15, 2021
January 31	January 11, 2021	January 29, 2021	0.120833		February 16, 2021
Total			$	0.724998

Month Ended 2020	Declaration Date	Record Date	Per Share		Payment Date
December 31	October 9, 2020	December 31, 2020	$	0.12	January 15, 2021
November 30	October 9, 2020	November 30, 2020	0.12		December 15, 2020
October 31	October 9, 2020	October 30, 2020	0.12		November 16, 2020
September 30	July 9, 2020	September 30, 2020	0.12		October 15, 2020
August 31	July 9, 2020	August 31, 2020	0.12		September 15, 2020
July 31	July 9, 2020	July 31, 2020	0.12		August 17, 2020
June 30	April 9, 2020	June 30, 2020	0.12		July 15, 2020
May 31	April 9, 2020	May 29, 2020	0.12		June 15, 2020
April 30	April 9, 2020	April 30, 2020	0.12		May 15, 2020
March 31	January 8, 2020	March 31, 2020	0.12		April 15, 2020
February 29	January 8, 2020	February 28, 2020	0.12		March 16, 2020
January 31	January 8, 2020	January 31, 2020	0.12		February 18, 2020
Total			$	1.44

On July 13, 2021, the Company’s board of directors declared the common stock dividends for the months ending July 31, 2021, August 31, 2021, and September 30, 2021 at a monthly rate of $0.120833 per share of common stock.

Restricted Shares of Common Stock

Restricted shares of common stock granted on January 7, 2021 to certain employees of the Company, subject to the recipient’s continued employment, will vest over four years in equal installments on January 1 of each year beginning in 2022. Refer to Note 8 for a discussion of the restricted shares of common stock granted on January 7, 2021 pursuant to the 2018 performance units. The following table summarizes activity related to the Company’s unvested restricted shares of common stock for the six months ended June 30, 2021 and the year ended December 31, 2020.

Unvested Restricted Shares of Common Stock	Shares		Weighted Average Grant Date Fair Value per Share
Balance at December 31, 2019	193,045		$	24.38
Granted	75,419	(1)	$	31.60
Vested	(81,408)	(2)	$	23.46
Forfeited	(2,166)		$	26.92
Balance at December 31, 2020	184,890		$	27.70
Granted	90,304	(1)	$	29.77
Vested	(72,788)	(2)	$	26.76
Forfeited	(521)		$	28.06
Balance at June 30, 2021	201,885		$	28.96

(1)The fair value per share on the grant date of January 7, 2021, February 13, 2020, and January 8, 2020, was $29.77, $32.64, and $31.49, respectively.

(2)The Company repurchased and retired 25,840 and 34,117 restricted shares of common stock that vested during the six months ended June 30, 2021 and the year ended December 31, 2020, respectively.

The unrecognized compensation expense associated with the Company’s restricted shares of common stock at June 30, 2021 was approximately $4.4 million and is expected to be recognized over a weighted average period of approximately 2.6 years.

The following table summarizes the fair value at vesting for the restricted shares of common stock that vested during the three and six months ended June 30, 2021 and 2020.

	Three months ended June 30,				Six months ended June 30,
Vested Restricted Shares of Common Stock	2021		2020		2021		2020
Vested restricted shares of common stock	—		—		72,788		78,010
Fair value of vested restricted shares of common stock (in thousands)	$	—	$	—	$	2,280	$	2,463

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Noncontrolling Interest

6 Months Ended

Jun. 30, 2021

Noncontrolling Interest [Abstract]

Noncontrolling Interest

Noncontrolling Interest

The following table summarizes the activity for noncontrolling interest in the Company for the six months ended June 30, 2021 and the year ended December 31, 2020.

Noncontrolling Interest	LTIP Units	Other Common Units	Total Noncontrolling Common Units	Noncontrolling Interest
Balance at December 31, 2019	1,697,358	2,039,494	3,736,852	2.5	%
Granted/Issued	278,806	—	278,806	N/A
Forfeited	—	—	—	N/A
Conversions from LTIP units to Other Common Units	(283,741)	283,741	—	N/A
Redemptions from Other Common Units to common stock	—	(730,420)	(730,420)	N/A
Balance at December 31, 2020	1,692,423	1,592,815	3,285,238	2.0	%
Granted/Issued	405,844	—	405,844	N/A
Forfeited	—	—	—	N/A
Conversions from LTIP units to Other Common Units	(97,159)	97,159	—	N/A
Redemptions from Other Common Units to common stock	—	(119,334)	(119,334)	N/A
Balance at June 30, 2021	2,001,108	1,570,640	3,571,748	2.2	%

LTIP Units

LTIP units granted on January 7, 2021 to non-employee, independent directors, subject to the recipient’s continued service, will vest on January 1, 2022. LTIP units granted on January 7, 2021 to certain senior executive officers and senior employees, subject to the recipient’s continued employment, will vest quarterly over four years, with the first vesting date having been March 31, 2021. Refer to Note 8 for a discussion of the LTIP units granted on January 7, 2021 pursuant to the 2018 performance units.

The fair value of the LTIP units at the date of grant was determined by a lattice-binomial option-pricing model based on a Monte Carlo simulation. The fair value of the LTIP units are based on Level 3 inputs and are non-recurring fair value measurements. The following table summarizes the assumptions used in valuing such LTIP units granted during the six months ended June 30, 2021 (excluding those LTIP units granted pursuant to the 2018 performance units; refer to Note 8 for details).

LTIP Units	Assumptions
Grant date	January 7, 2021
Expected term (years)	10
Expected volatility	34.0		%
Expected dividend yield	5.0		%
Risk-free interest rate	0.229		%
Fair value of LTIP units at issuance (in thousands)	$	4,316
LTIP units at issuance	153,430
Fair value unit price per LTIP unit at issuance	$	28.13

The following table summarizes activity related to the Company’s unvested LTIP units for the six months ended June 30, 2021 and the year ended December 31, 2020.

Unvested LTIP Units	LTIP Units	Weighted Average Grant Date Fair Value per Share
Balance at December 31, 2019	227,348	$	23.37
Granted	278,806	$	29.47
Vested	(294,706)	$	26.87
Forfeited	—	$	—
Balance at December 31, 2020	211,448	$	26.54
Granted	405,844	$	28.13
Vested	(228,821)	$	27.33
Forfeited	—	$	—
Balance at June 30, 2021	388,471	$	27.74

The unrecognized compensation expense associated with the Company’s LTIP units at June 30, 2021 was approximately $4.1 million and is expected to be recognized over a weighted average period of approximately 2.3 years.

The following table summarizes the fair value at vesting for the LTIP units that vested during the three and six months ended June 30, 2021 and 2020.

	Three months ended June 30,				Six months ended June 30,
Vested LTIP units	2021		2020		2021		2020
Vested LTIP units	45,335		43,958		228,821		174,145
Fair value of vested LTIP units (in thousands)	$	1,686	$	1,213	$	7,369	$	5,074

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Equity Incentive Plan

6 Months Ended

Jun. 30, 2021

Share-based Payment Arrangement [Abstract]

Equity Incentive Plan

Equity Incentive Plan

On January 7, 2021, the Company granted performance units approved by the compensation committee of the board of directors under the 2011 Plan to certain key employees of the Company. The terms of the performance units granted on January 7, 2021 are substantially the same as the terms of the performance units granted on January 8, 2020, except that the measuring period commenced on January 1, 2021 and ends on December 31, 2023.

The fair value of the performance units at the date of grant was determined by a lattice-binomial option-pricing model based on a Monte Carlo simulation. The fair value of the performance units is based on Level 3 inputs and are non-recurring fair value measurements. The performance unit equity compensation expense is recognized ratably from the grant date into earnings over the vesting period. The following table summarizes the assumptions used in valuing the performance units granted during the six months ended June 30, 2021.

Performance Units	Assumptions
Grant date	January 7, 2021
Expected volatility	34.4		%
Expected dividend yield	5.0		%
Risk-free interest rate	0.2271		%
Fair value of performance units grant (in thousands)	$	5,522

On December 31, 2020, the measuring period pursuant to the 2018 performance units concluded, and it was determined that the Company’s total stockholder return exceeded the threshold percentage and return hurdle. The compensation committee of the board of directors approved the issuance of 127,671 vested LTIP units and 44,591 vested shares of common stock to the participants (of which 17,731 shares of common stock were repurchased and retired), which were issued on January 7, 2021. The compensation committee of the board of directors also approved the issuance of 124,743 LTIP units and 6,352 restricted shares of common stock that will vest in one year on December 31, 2021, which were issued on January 7, 2021.

The unrecognized compensation expense associated with the Company’s performance units at June 30, 2021 was approximately $8.5 million and is expected to be recognized over a weighted average period of approximately 1.9 years.

Non-cash Compensation Expense

The following table summarizes the amount recorded in general and administrative expenses in the accompanying Consolidated Statements of Operations for the amortization of restricted shares of common stock, LTIP units, performance units, and the Company’s director compensation for the three and six months ended June 30, 2021 and 2020.

	Three months ended June 30,				Six months ended June 30,
Non-Cash Compensation Expense (in thousands)	2021		2020		2021		2020
Restricted shares of common stock	$	586	$	481	$	1,237	$	948
LTIP units	2,346		978		4,754		1,942
Performance units	1,484		1,341		2,922		2,648
Director compensation (1)	123		138		241		252
Total non-cash compensation expense	$	4,539	$	2,938	$	9,154	$	5,790

(1)All of the Company’s independent directors elected to receive shares of common stock in lieu of cash for their service during the three and six months ended June 30, 2021 and 2020. The number of shares of common stock granted is calculated based on the trailing ten days average common stock price ending on the third business day preceding the grant date.

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Leases

6 Months Ended

Jun. 30, 2021

Leases [Abstract]

Leases

Leases

Lessor Leases

The Company has operating leases in which it is the lessor for its rental property. Certain leases contain variable lease payments based upon changes in the Consumer Price Index (“CPI”). Billings for real estate taxes and other expenses are also considered to be variable lease payments. Certain leases contain options to renew or terminate the lease, and options for the lessee to purchase the rental property, all of which are predominately at the sole discretion of the lessee.

The following table summarizes the components of rental income recognized during the three and six months ended June 30, 2021 and 2020 included in the accompanying Consolidated Statements of Operations.

	Three months ended June 30,				Six months ended June 30,
Rental Income (in thousands)	2021		2020		2021		2020
Fixed lease payments	$	103,778	$	91,234	$	204,957	$	181,630
Variable lease payments	29,639		25,588		58,883		50,594
Straight-line rental income	4,718		1,823		9,600		5,750
Net decrease to rental income related to above and below market lease amortization	(330)		(1,174)		(1,810)		(2,164)
Total rental income	$	137,805	$	117,471	$	271,630	$	235,810

The Company evaluates its operating leases to determine if it is probable it will collect substantially all of the lessee's remaining lease payments under the lease term. For those that are not probable of collection, the Company converts to the cash basis of accounting. If the Company subsequently determines that it is probable it will collect substantially all of the lessee's remaining lease payments under the lease term, the Company will reinstate the accrued rent balance adjusting for the amount related to the period when the lease was accounted for on a cash basis. During the three and six months ended June 30, 2021, this resulted in a net increase of rental income of approximately $0 and $0.1 million for the three and six months ended June 30, 2021 due to the reversal of a net accrued rent liability and tenants converting from cash basis accounting to accrual basis accounting. Additionally, there was $0.3 million and $1.7 million of contractual rental income not received from cash basis tenants partially offset by $0.1 million and $1.3 million of previously unrecognized rental income payments received from tenants under the cash basis of accounting during the three and six months ended June 30, 2021. During the three and six months ended June 30, 2020, the Company converted to the cash basis of accounting for certain leases which resulted in a reduction of rental income of approximately $1.2 million and $0.9 million for three and six months ended June 30, 2020, due to the reversal of accrued rent. Additionally, there was $0.6 million and $0.6 million of contractual rental income that was not recognized for payments that were not received from the tenants for the three and six months ended June 30, 2020.

As of June 30, 2021 and December 31, 2020, the Company had accrued rental income of approximately $68.7 million and $60.0 million, respectively, included in tenant accounts receivable on the accompanying Consolidated Balance Sheets.

As of June 30, 2021 and December 31, 2020, the Company had approximately $29.8 million and $30.1 million, respectively, of total lease security deposits available in the form of existing letters of credit, which are not reflected on the accompanying

Consolidated Balance Sheets. As of June 30, 2021 and December 31, 2020, the Company had approximately $0.7 million and $0.7 million, respectively, of lease security deposits available in cash, which are included in restricted cash on the accompanying Consolidated Balance Sheets. The Company’s remaining lease security deposits are commingled in cash and cash equivalents. These funds may be used to settle tenant accounts receivables in the event of a default under the related lease. As of June 30, 2021 and December 31, 2020, the Company’s total liability associated with these lease security deposits was approximately $11.6 million and $11.0 million, respectively, and is included in tenant prepaid rent and security deposits on the accompanying Consolidated Balance Sheets.

The Company estimates that billings for real estate taxes, which are the responsibility of certain tenants under the terms of their leases and are not reflected on the Company’s consolidated financial statements, was approximately $5.3 million, $10.4 million, $4.9 million and $9.7 million for the three and six months ended June 30, 2021 and 2020, respectively. These amounts would have been the maximum real estate tax expense of the Company, excluding any penalties or interest, had the tenants not met their contractual obligations for these periods.

The following table summarizes the maturity of fixed lease payments under the Company’s leases as of June 30, 2021.

Year	Maturity of Fixed Lease Payments (in thousands)
Remainder of 2021	$	208,202
2022	$	396,672
2023	$	355,331
2024	$	304,926
2025	$	251,700
Thereafter	$	942,803

Lessee Leases

The Company has operating leases in which it is the lessee for ground leases and its corporate office lease. These leases have remaining lease terms of approximately 5.0 years to 48.4 years. Certain ground leases contain options to extend the leases for ten years to 20 years, all of which are reasonably certain to be exercised, and are included in the computation of the Company’s right-of-use assets and operating lease liabilities.

The following table summarizes supplemental information related to operating lease right-of-use assets and operating lease liabilities recognized in the Company’s Consolidated Balance Sheets as of June 30, 2021 and December 31, 2020.

Operating Lease Term and Discount Rate	June 30, 2021		December 31, 2020
Weighted average remaining lease term (years)	29.6		29.9
Weighted average discount rate	6.8	%	6.8	%

The following table summarizes the operating lease cost recognized during the three and six months ended June 30, 2021 and 2020 included in the Company’s Consolidated Statements of Operations.

	Three months ended June 30,				Six months ended June 30,
Operating Lease Cost (in thousands)	2021		2020		2021		2020
Operating lease cost included in property expense attributable to ground leases	$	417	$	331	$	834	$	662
Operating lease cost included in general and administrative expense attributable to corporate office lease	429		423		858		741
Total operating lease cost	$	846	$	754	$	1,692	$	1,403

The following table summarizes supplemental cash flow information related to operating leases recognized during the six months ended June 30, 2021 and 2020 in the Company’s Consolidated Statements of Cash Flows.

	Six months ended June 30,
Operating Leases (in thousands)	2021		2020
Cash paid for amounts included in the measurement of lease liabilities (operating cash flows)	$	952	$	1,143
Right-of-use assets obtained in exchange for new lease liabilities	$	—	$	7,718

The following table summarizes the maturity of operating lease liabilities under the Company’s ground leases and corporate office lease as of June 30, 2021.

Year	Maturity of Operating Lease Liabilities(1) (in thousands)
Remainder of 2021	$	1,357
2022	3,188
2023	3,248
2024	3,291
2025	3,336
Thereafter	62,365
Total lease payments	76,785
Less: Imputed interest	(48,947)
Present value of operating lease liabilities	$	27,838

(1)Operating lease liabilities do not include estimates of CPI rent changes required by certain ground lease agreements. Therefore, actual payments may differ than those presented.

Leases

Leases

Lessor Leases

The Company has operating leases in which it is the lessor for its rental property. Certain leases contain variable lease payments based upon changes in the Consumer Price Index (“CPI”). Billings for real estate taxes and other expenses are also considered to be variable lease payments. Certain leases contain options to renew or terminate the lease, and options for the lessee to purchase the rental property, all of which are predominately at the sole discretion of the lessee.

The following table summarizes the components of rental income recognized during the three and six months ended June 30, 2021 and 2020 included in the accompanying Consolidated Statements of Operations.

	Three months ended June 30,				Six months ended June 30,
Rental Income (in thousands)	2021		2020		2021		2020
Fixed lease payments	$	103,778	$	91,234	$	204,957	$	181,630
Variable lease payments	29,639		25,588		58,883		50,594
Straight-line rental income	4,718		1,823		9,600		5,750
Net decrease to rental income related to above and below market lease amortization	(330)		(1,174)		(1,810)		(2,164)
Total rental income	$	137,805	$	117,471	$	271,630	$	235,810

The Company evaluates its operating leases to determine if it is probable it will collect substantially all of the lessee's remaining lease payments under the lease term. For those that are not probable of collection, the Company converts to the cash basis of accounting. If the Company subsequently determines that it is probable it will collect substantially all of the lessee's remaining lease payments under the lease term, the Company will reinstate the accrued rent balance adjusting for the amount related to the period when the lease was accounted for on a cash basis. During the three and six months ended June 30, 2021, this resulted in a net increase of rental income of approximately $0 and $0.1 million for the three and six months ended June 30, 2021 due to the reversal of a net accrued rent liability and tenants converting from cash basis accounting to accrual basis accounting. Additionally, there was $0.3 million and $1.7 million of contractual rental income not received from cash basis tenants partially offset by $0.1 million and $1.3 million of previously unrecognized rental income payments received from tenants under the cash basis of accounting during the three and six months ended June 30, 2021. During the three and six months ended June 30, 2020, the Company converted to the cash basis of accounting for certain leases which resulted in a reduction of rental income of approximately $1.2 million and $0.9 million for three and six months ended June 30, 2020, due to the reversal of accrued rent. Additionally, there was $0.6 million and $0.6 million of contractual rental income that was not recognized for payments that were not received from the tenants for the three and six months ended June 30, 2020.

As of June 30, 2021 and December 31, 2020, the Company had accrued rental income of approximately $68.7 million and $60.0 million, respectively, included in tenant accounts receivable on the accompanying Consolidated Balance Sheets.

As of June 30, 2021 and December 31, 2020, the Company had approximately $29.8 million and $30.1 million, respectively, of total lease security deposits available in the form of existing letters of credit, which are not reflected on the accompanying

Consolidated Balance Sheets. As of June 30, 2021 and December 31, 2020, the Company had approximately $0.7 million and $0.7 million, respectively, of lease security deposits available in cash, which are included in restricted cash on the accompanying Consolidated Balance Sheets. The Company’s remaining lease security deposits are commingled in cash and cash equivalents. These funds may be used to settle tenant accounts receivables in the event of a default under the related lease. As of June 30, 2021 and December 31, 2020, the Company’s total liability associated with these lease security deposits was approximately $11.6 million and $11.0 million, respectively, and is included in tenant prepaid rent and security deposits on the accompanying Consolidated Balance Sheets.

The Company estimates that billings for real estate taxes, which are the responsibility of certain tenants under the terms of their leases and are not reflected on the Company’s consolidated financial statements, was approximately $5.3 million, $10.4 million, $4.9 million and $9.7 million for the three and six months ended June 30, 2021 and 2020, respectively. These amounts would have been the maximum real estate tax expense of the Company, excluding any penalties or interest, had the tenants not met their contractual obligations for these periods.

The following table summarizes the maturity of fixed lease payments under the Company’s leases as of June 30, 2021.

Year	Maturity of Fixed Lease Payments (in thousands)
Remainder of 2021	$	208,202
2022	$	396,672
2023	$	355,331
2024	$	304,926
2025	$	251,700
Thereafter	$	942,803

Lessee Leases

The Company has operating leases in which it is the lessee for ground leases and its corporate office lease. These leases have remaining lease terms of approximately 5.0 years to 48.4 years. Certain ground leases contain options to extend the leases for ten years to 20 years, all of which are reasonably certain to be exercised, and are included in the computation of the Company’s right-of-use assets and operating lease liabilities.

The following table summarizes supplemental information related to operating lease right-of-use assets and operating lease liabilities recognized in the Company’s Consolidated Balance Sheets as of June 30, 2021 and December 31, 2020.

Operating Lease Term and Discount Rate	June 30, 2021		December 31, 2020
Weighted average remaining lease term (years)	29.6		29.9
Weighted average discount rate	6.8	%	6.8	%

The following table summarizes the operating lease cost recognized during the three and six months ended June 30, 2021 and 2020 included in the Company’s Consolidated Statements of Operations.

	Three months ended June 30,				Six months ended June 30,
Operating Lease Cost (in thousands)	2021		2020		2021		2020
Operating lease cost included in property expense attributable to ground leases	$	417	$	331	$	834	$	662
Operating lease cost included in general and administrative expense attributable to corporate office lease	429		423		858		741
Total operating lease cost	$	846	$	754	$	1,692	$	1,403

The following table summarizes supplemental cash flow information related to operating leases recognized during the six months ended June 30, 2021 and 2020 in the Company’s Consolidated Statements of Cash Flows.

	Six months ended June 30,
Operating Leases (in thousands)	2021		2020
Cash paid for amounts included in the measurement of lease liabilities (operating cash flows)	$	952	$	1,143
Right-of-use assets obtained in exchange for new lease liabilities	$	—	$	7,718

The following table summarizes the maturity of operating lease liabilities under the Company’s ground leases and corporate office lease as of June 30, 2021.

Year	Maturity of Operating Lease Liabilities(1) (in thousands)
Remainder of 2021	$	1,357
2022	3,188
2023	3,248
2024	3,291
2025	3,336
Thereafter	62,365
Total lease payments	76,785
Less: Imputed interest	(48,947)
Present value of operating lease liabilities	$	27,838

(1)Operating lease liabilities do not include estimates of CPI rent changes required by certain ground lease agreements. Therefore, actual payments may differ than those presented.

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Earnings Per Share

6 Months Ended

Jun. 30, 2021

Earnings Per Share [Abstract]

Earnings Per Share

Earnings Per Share

During the three and six months ended June 30, 2021 and 2020, there were 202,171, 200,501, 189,895 and 185,821, respectively, of unvested restricted shares of common stock on a weighted average basis that were considered participating securities.

The following table reconciles the numerators and denominators in the computation of basic and diluted earnings per common share for the three and six months ended June 30, 2021 and 2020.

	Three months ended June 30,				Six months ended June 30,
Earnings Per Share (in thousands, except per share data)	2021		2020		2021		2020
Numerator
Net income attributable to common stockholders	$	32,576	$	17,552	$	53,507	$	79,635
Denominator
Weighted average common shares outstanding — basic	159,736		148,663		159,086		148,116
Effect of dilutive securities(1)
Share-based compensation	584		364		467		225
Shares issuable under forward sales agreements	1,047		—		696		—
Weighted average common shares outstanding — diluted	161,367		149,027		160,249		148,341
Net income per share — basic and diluted
Net income per share attributable to common stockholders — basic	$	0.20	$	0.12	$	0.34	$	0.54
Net income per share attributable to common stockholders — diluted	$	0.20	$	0.12	$	0.33	$	0.54

(1)During the three and six months ended June 30, 2021 and 2020, there were approximately 202, 201, 190 and 186, unvested shares of restricted common stock, respectively, on a weighted average basis that were not included in the computation of diluted earnings per share because the allocation of income under the two-class method was more dilutive.

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Commitments and Contingencies	6 Months Ended
	Jun. 30, 2021
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and ContingenciesThe Company is subject to various legal proceedings and claims that arise in the ordinary course of business. These matters are generally covered by insurance subject to deductible requirements. Management believes that the ultimate settlement of these actions will not have a material adverse effect on the Company’s financial position, results of operations, or cash flows.The Company has letters of credit of approximately $2.9 million as of June 30, 2021 related to construction projects and certain other agreements.

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Subsequent Events	6 Months Ended
	Jun. 30, 2021
Subsequent Events [Abstract]
Subsequent Events	Subsequent EventsThe following non-recognized subsequent events were noted.

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Summary of Significant Accounting Policies (Policies)

6 Months Ended

Jun. 30, 2021

Accounting Policies [Abstract]

Quarterly Financial Information

Interim Financial Information

The accompanying interim financial statements have been presented in conformity with accounting principles generally accepted in the United States of America (“GAAP”) and with the instructions to Form 10-Q and Regulation S-X for interim financial information. Accordingly, these statements do not include all of the information and notes required by GAAP for complete financial statements. In the opinion of management, the accompanying interim financial statements include all adjustments, consisting of normal recurring items, necessary for their fair statement in conformity with GAAP. Interim results are not necessarily indicative of results for a full year. The year-end consolidated balance sheet data was derived from audited financial statements, but does not include all disclosures required by GAAP. The information included in this Quarterly Report on Form 10-Q should be read in conjunction with the Company’s consolidated financial statements and notes thereto contained in the Company’s Annual Report on Form 10-K for the fiscal year ended December 31, 2020.

Basis of Presentation

Basis of Presentation

The Company’s consolidated financial statements include the accounts of the Company, the Operating Partnership, and their subsidiaries. Interests in the Operating Partnership not owned by the Company are referred to as “Noncontrolling Common Units.” These Noncontrolling Common Units are held by other limited partners in the form of common units (“Other Common Units”) and long term incentive plan units (“LTIP units”) issued pursuant to the STAG Industrial, Inc. 2011 Equity Incentive Plan, as amended and restated (the “2011 Plan”). All significant intercompany balances and transactions have been eliminated in the consolidation of entities. The financial statements of the Company are presented on a consolidated basis for all periods presented.

Share-based Payment Arrangement

Incentive and Equity-Based Employee Compensation Plans

On January 7, 2021, the Company adopted the STAG Industrial, Inc. Employee Retirement Vesting Program (the “Vesting Program”) to provide supplemental retirement benefits for eligible employees. For those employees who are retirement eligible or will become retirement eligible during the applicable vesting period under the terms of the Vesting Program, the Company accelerates equity-based compensation through the employee’s six-month retirement notification period or retirement eligibility date, respectively. The adoption of the Vesting Program resulted in an increase to general and administrative expenses of approximately $1.4 million and $2.9 million for the three and six months ended June 30, 2021, respectively, due to the acceleration of equity-based compensation expense for certain eligible employees. The Company estimates that the adoption of the Vesting Program will result in an increase in general and administrative expenses of approximately $2.4 million for the year ending December 31, 2021.

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Summary of Significant Accounting Policies - Cash, Cash Equivalents and Restricted Cash (Tables)

6 Months Ended

Jun. 30, 2021

Accounting Policies [Abstract]

Schedule of Cash, Cash Equivalents and Restricted Cash

The following table presents a reconciliation of cash and cash equivalents and restricted cash reported on the accompanying Consolidated Balance Sheets to amounts reported on the accompanying Consolidated Statements of Cash Flows.

Reconciliation of cash and cash equivalents and restricted cash (in thousands)	June 30, 2021		December 31, 2020
Cash and cash equivalents	$	14,588	$	15,666
Restricted cash	3,927		4,673
Total cash and cash equivalents and restricted cash	$	18,515	$	20,339

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Rental Property (Tables)

6 Months Ended

Jun. 30, 2021

Real Estate [Abstract]

Schedule of components of rental property

The following table summarizes the components of rental property as of June 30, 2021 and December 31, 2020.

Rental Property (in thousands)	June 30, 2021		December 31, 2020
Land	$	510,413	$	492,783
Buildings, net of accumulated depreciation of $366,571 and $327,043, respectively	3,306,299		3,195,439
Tenant improvements, net of accumulated depreciation of $25,078 and $24,891, respectively	41,000		43,684
Building and land improvements, net of accumulated depreciation of $161,318 and $143,414, respectively	278,759		275,433
Construction in progress	4,765		18,052
Deferred leasing intangibles, net of accumulated amortization of $260,893 and $258,005, respectively	482,672		499,802
Total rental property, net	$	4,623,908	$	4,525,193

Schedule of real estate properties acquired

The following table summarizes the acquisitions of the Company during the three and six months ended June 30, 2021. The Company accounted for all of its acquisitions as asset acquisitions.

Market (1)	Date Acquired	Square Feet	Number of Buildings	Purchase Price (in thousands)
Omaha/Council Bluffs, NE-IA	January 21, 2021	370,000	1	$	24,922
Minneapolis/St Paul, MN	February 24, 2021	80,655	1	10,174
Long Island, NY	February 25, 2021	64,224	1	8,516
Sacramento, CA	February 25, 2021	267,284	1	25,917
Little Rock/N Little Rock	March 1, 2021	300,160	1	24,317
Cleveland, OH	March 18, 2021	170,000	1	6,382
Three months ended March 31, 2021		1,252,323	6	100,228
Indianapolis, IN	May 17, 2021	154,440	1	13,655
Baltimore, MD	May 17, 2021	46,851	1	6,228
Detroit, MI	June 1, 2021	248,040	1	23,786
Green Bay, WI	June 7, 2021	152,000	1	7,249
Phoenix, AZ	June 14, 2021	41,504	1	8,670
Cleveland, OH	June 17, 2021	179,577	1	19,602
Reno/Sparks, NV	June 30, 2021	183,435	1	13,892
Washington, DC	June 30, 2021	193,420	1	17,521
Stockton/Modesto, CA	June 30, 2021	150,000	1	16,118
Three months ended June 30, 2021		1,349,267	9	126,721
Six months ended June 30, 2021		2,601,590	15	$	226,949

(1) As defined by CoStar Realty Information Inc (“CoStar”). If the building is located outside of a CoStar defined market, the city and state is reflected.

Summary of allocation of the consideration paid for the acquired assets and liabilities in connection with the acquisition of buildings at the date of acquisition

The following table summarizes the allocation of the consideration paid at the date of acquisition during the six months ended June 30, 2021 for the acquired assets and liabilities in connection with the acquisitions identified in the table above.

Acquired Assets and Liabilities	Purchase Price (in thousands)		Weighted Average Amortization Period (years) of Intangibles at Acquisition
Land	$	21,844	N/A
Buildings	165,549		N/A
Tenant improvements	1,575		N/A
Building and land improvements	9,435		N/A
Deferred leasing intangibles - In-place leases	20,206		8.5
Deferred leasing intangibles - Tenant relationships	9,761		11.4
Deferred leasing intangibles - Above market leases	2,279		13.8
Deferred leasing intangibles - Below market leases	(3,861)		6.4
Below market assumed debt adjustment	161		18.8
Total purchase price	$	226,949
Less: Mortgage notes assumed	(5,103)
Net assets acquired	$	221,846

Schedule of pro forma information for acquired properties

The following table summarizes the results of operations for the three and six months ended June 30, 2021 for the buildings acquired during the six months ended June 30, 2021 included in the Company’s Consolidated Statements of Operations from the date of acquisition.

Results of Operations (in thousands)	Three months ended June 30, 2021		Six months ended June 30, 2021
Total revenue	$	2,219	$	3,506
Net income	$	284	$	307

Schedule of Finite-Lived Intangible Assets and Below Market Leases

The following table summarizes the deferred leasing intangibles on the accompanying Consolidated Balance Sheets as of June 30, 2021 and December 31, 2020.

	June 30, 2021						December 31, 2020
Deferred Leasing Intangibles (in thousands)	Gross		Accumulated Amortization		Net		Gross		Accumulated Amortization		Net
Above market leases	$	86,466	$	(31,194)	$	55,272	$	92,125	$	(33,629)	$	58,496
Other intangible lease assets	657,099		(229,699)		427,400		665,682		(224,376)		441,306
Total deferred leasing intangible assets	$	743,565	$	(260,893)	$	482,672	$	757,807	$	(258,005)	$	499,802
Below market leases	$	50,439	$	(17,510)	$	32,929	$	48,521	$	(15,759)	$	32,762
Total deferred leasing intangible liabilities	$	50,439	$	(17,510)	$	32,929	$	48,521	$	(15,759)	$	32,762

The following table summarizes the amortization expense and the net decrease to rental income for the amortization of deferred leasing intangibles during the three and six months ended June 30, 2021 and 2020.

	Three months ended June 30,				Six months ended June 30,
Deferred Leasing Intangibles Amortization (in thousands)	2021		2020		2021		2020
Net decrease to rental income related to above and below market lease amortization	$	330	$	1,174	$	1,810	$	2,164
Amortization expense related to other intangible lease assets	$	21,422	$	21,076	$	43,869	$	41,378

Schedule of Finite-Lived Intangible Assets, Future Amortization Expense

The following table summarizes the amortization of deferred leasing intangibles over the next five calendar years beginning with 2021 as of June 30, 2021.

Year	Amortization Expense Related to Other Intangible Lease Assets (in thousands)		Net Decrease to Rental Income Related to Above and Below Market Lease Amortization (in thousands)
Remainder of 2021	$	38,884	$	283
2022	$	68,917	$	327
2023	$	60,313	$	820
2024	$	51,203	$	1,286
2025	$	43,445	$	1,164

Below Market Lease, Future Amortization Income

The following table summarizes the amortization of deferred leasing intangibles over the next five calendar years beginning with 2021 as of June 30, 2021.

Year	Amortization Expense Related to Other Intangible Lease Assets (in thousands)		Net Decrease to Rental Income Related to Above and Below Market Lease Amortization (in thousands)
Remainder of 2021	$	38,884	$	283
2022	$	68,917	$	327
2023	$	60,313	$	820
2024	$	51,203	$	1,286
2025	$	43,445	$	1,164

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Debt (Tables)

6 Months Ended

Jun. 30, 2021

Debt Disclosure [Abstract]

Summary of the mortgage notes payable, unsecured term loans and credit facility

The following table summarizes the Company’s outstanding indebtedness, including borrowings under the Company’s unsecured credit facility, unsecured term loans, unsecured notes, and mortgage notes as of June 30, 2021 and December 31, 2020.

Loan	Principal Outstanding as of June 30, 2021 (in thousands)		Principal Outstanding as of December 31, 2020 (in thousands)		Interest  Rate(1)(2)		Maturity Date	Prepayment Terms(3)
Unsecured credit facility:
Unsecured Credit Facility(4)	$	284,000	$	107,000	L + 0.90%		January 12, 2024	i
Total unsecured credit facility	284,000		107,000
Unsecured term loans:
Unsecured Term Loan A	150,000		150,000		3.38	%	March 31, 2022	i
Unsecured Term Loan D	150,000		150,000		2.85	%	January 4, 2023	i
Unsecured Term Loan E	175,000		175,000		3.92	%	January 15, 2024	i
Unsecured Term Loan F	200,000		200,000		3.11	%	January 12, 2025	i
Unsecured Term Loan G	300,000		300,000		1.28	%	February 5, 2026	i
Total unsecured term loans	975,000		975,000
Total unamortized deferred financing fees and debt issuance costs	(4,070)		(3,889)
Total carrying value unsecured term loans, net	970,930		971,111
Unsecured notes:
Series F Unsecured Notes	100,000		100,000		3.98	%	January 5, 2023	ii
Series A Unsecured Notes	50,000		50,000		4.98	%	October 1, 2024	ii
Series D Unsecured Notes	100,000		100,000		4.32	%	February 20, 2025	ii
Series G Unsecured Notes	75,000		75,000		4.10	%	June 13, 2025	ii
Series B Unsecured Notes	50,000		50,000		4.98	%	July 1, 2026	ii
Series C Unsecured Notes	80,000		80,000		4.42	%	December 30, 2026	ii
Series E Unsecured Notes	20,000		20,000		4.42	%	February 20, 2027	ii
Series H Unsecured Notes	100,000		100,000		4.27	%	June 13, 2028	ii
Total unsecured notes	575,000		575,000
Total unamortized deferred financing fees and debt issuance costs	(1,610)		(1,719)
Total carrying value unsecured notes, net	573,390		573,281
Mortgage notes (secured debt):
Wells Fargo Bank, National Association CMBS Loan	47,580		48,546		4.31	%	December 1, 2022	iii
Thrivent Financial for Lutherans	3,494		3,556		4.78	%	December 15, 2023	iv
United of Omaha Life Insurance Company	5,040		—		3.71	%	October 1, 2039	ii
Total mortgage notes	56,114		52,102
Net unamortized fair market value premium (discount)	(134)		29
Total unamortized deferred financing fees and debt issuance costs	(169)		(233)
Total carrying value mortgage notes, net	55,811		51,898
Total / weighted average interest rate(5)	$	1,884,131	$	1,703,290	2.99	%

(1)Interest rate as of June 30, 2021. At June 30, 2021, the one-month LIBOR (“L”) was 0.10050%. The current interest rate is not adjusted to include the amortization of deferred financing fees or debt issuance costs incurred in obtaining debt or any unamortized fair market value premiums. The spread over the applicable rate for the Company’s unsecured credit facility and unsecured term loans is based on the Company’s debt rating, as defined in the respective loan agreements.

(2)The unsecured term loans have a stated interest rate of one-month LIBOR plus a spread of 1.0%. As of June 30, 2021, one-month LIBOR for the Unsecured Term Loans A, D, E, F, and G was swapped to a fixed rate of 2.38%, 1.85%, 2.92%, 2.11%, and 0.28%, respectively. One-month LIBOR for the Unsecured Term Loan G will be swapped to a fixed rate of 0.94% effective April 18, 2023.

(3)Prepayment terms consist of (i) pre-payable with no penalty; (ii) pre-payable with penalty; (iii) pre-payable without penalty three months prior to the maturity date, however can be defeased; and (iv) pre-payable without penalty three months prior to the maturity date.

(4)The capacity of the unsecured credit facility is $750.0 million. Deferred financing fees and debt issuance costs, net of accumulated amortization related to the unsecured credit facility of approximately $2.2 million and $1.6 million is included in prepaid expenses and other assets on the accompanying Consolidated Balance Sheets as of June 30, 2021 and December 31, 2020, respectively. The initial maturity date is January 15, 2023, which may be extended pursuant to two six-month extension options exercisable by the Company in its discretion upon advance written notice. Exercise of each six-month option is subject to the following conditions: (i) absence of a default immediately before the extension and immediately after giving effect to the extension, (ii) accuracy of representations and warranties as of the extension date (both immediately before and after the extension), as if made on the extension date, and (iii) payment of a fee. Neither extension option is subject to lender consent, assuming proper notice and satisfaction of the conditions.

(5)The weighted average interest rate was calculated using the fixed interest rate swapped on the notional amount of $975.0 million of debt, and is not adjusted to include the amortization of deferred financing fees or debt issuance costs incurred in obtaining debt or any unamortized fair market value premiums or discounts.

Interest Income and Interest Expense Disclosure [Table Text Block]

The following table summarizes the costs included in interest expense related to the Company’s debt arrangements on the accompanying Consolidated Statement of Operations for the three and six months ended June 30, 2021 and 2020.

	Three months ended June 30,				Six months ended June 30,
Costs Included in Interest Expense (in thousands)	2021		2020		2021		2020
Amortization of deferred financing fees and debt issuance costs and fair market value premiums/discounts	$	789	$	746	$	1,276	$	1,422
Facility, unused, and other fees	$	440	$	316	$	826	$	680

Schedule of aggregate carrying value of the debt and the corresponding estimate of fair value

The following table summarizes the aggregate principal outstanding under the Company’s debt arrangements and the corresponding estimate of fair value as of June 30, 2021 and December 31, 2020.

	June 30, 2021				December 31, 2020
Indebtedness (in thousands)	Principal Outstanding		Fair Value		Principal Outstanding		Fair Value
Unsecured credit facility	$	284,000	$	284,558	$	107,000	$	107,000
Unsecured term loans	975,000		979,222		975,000		978,448
Unsecured notes	575,000		627,036		575,000		628,575
Mortgage notes	56,114		58,435		52,102		54,485
Total principal amount	1,890,114		$	1,949,251	1,709,102		$	1,768,508
Net unamortized fair market value premium (discount)	(134)				29
Total unamortized deferred financing fees and debt issuance costs	(5,849)				(5,841)
Total carrying value	$	1,884,131			$	1,703,290

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Derivative Financial Instruments (Tables)

6 Months Ended

Jun. 30, 2021

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Schedule of Derivative Instruments [Table Text Block]

The following table summarizes the Company’s outstanding interest rate swaps as of June 30, 2021. All of the Company’s interest rate swaps are designated as qualifying cash flow hedges.

Interest Rate Derivative Counterparty	Trade Date	Effective Date	Notional Amount (in thousands)		Fair Value (in thousands)		Pay Fixed Interest Rate		Receive Variable Interest Rate	Maturity Date
Wells Fargo Bank, N.A.	Jan-08-2015	Mar-20-2015	$	25,000	$	(324)	1.8280	%	One-month L	Mar-31-2022
The Toronto-Dominion Bank	Jan-08-2015	Feb-14-2020	$	25,000	$	(441)	2.4535	%	One-month L	Mar-31-2022
Regions Bank	Jan-08-2015	Feb-14-2020	$	50,000	$	(891)	2.4750	%	One-month L	Mar-31-2022
Capital One, N.A.	Jan-08-2015	Feb-14-2020	$	50,000	$	(912)	2.5300	%	One-month L	Mar-31-2022
The Toronto-Dominion Bank	Jul-20-2017	Oct-30-2017	$	25,000	$	(637)	1.8485	%	One-month L	Jan-04-2023
Royal Bank of Canada	Jul-20-2017	Oct-30-2017	$	25,000	$	(638)	1.8505	%	One-month L	Jan-04-2023
Wells Fargo Bank, N.A.	Jul-20-2017	Oct-30-2017	$	25,000	$	(638)	1.8505	%	One-month L	Jan-04-2023
PNC Bank, N.A.	Jul-20-2017	Oct-30-2017	$	25,000	$	(637)	1.8485	%	One-month L	Jan-04-2023
PNC Bank, N.A.	Jul-20-2017	Oct-30-2017	$	50,000	$	(1,273)	1.8475	%	One-month L	Jan-04-2023
The Toronto-Dominion Bank	Apr-20-2020	Sep-29-2020	$	75,000	$	(64)	0.2750	%	One-month L	Apr-18-2023
Wells Fargo Bank, N.A.	Apr-20-2020	Sep-29-2020	$	75,000	$	(70)	0.2790	%	One-month L	Apr-18-2023
The Toronto-Dominion Bank	Apr-20-2020	Mar-19-2021	$	75,000	$	(64)	0.2750	%	One-month L	Apr-18-2023
Wells Fargo Bank, N.A.	Apr-20-2020	Mar-19-2021	$	75,000	$	(71)	0.2800	%	One-month L	Apr-18-2023
The Toronto-Dominion Bank	Jul-24-2018	Jul-26-2019	$	50,000	$	(3,243)	2.9180	%	One-month L	Jan-12-2024
PNC Bank, N.A.	Jul-24-2018	Jul-26-2019	$	50,000	$	(3,243)	2.9190	%	One-month L	Jan-12-2024
Bank of Montreal	Jul-24-2018	Jul-26-2019	$	50,000	$	(3,243)	2.9190	%	One-month L	Jan-12-2024
U.S. Bank, N.A.	Jul-24-2018	Jul-26-2019	$	25,000	$	(1,622)	2.9190	%	One-month L	Jan-12-2024
Wells Fargo Bank, N.A.	May-02-2019	Jul-15-2020	$	50,000	$	(2,932)	2.2460	%	One-month L	Jan-15-2025
U.S. Bank, N.A.	May-02-2019	Jul-15-2020	$	50,000	$	(2,932)	2.2459	%	One-month L	Jan-15-2025
Regions Bank	May-02-2019	Jul-15-2020	$	50,000	$	(2,930)	2.2459	%	One-month L	Jan-15-2025
Bank of Montreal	Jul-16-2019	Jul-15-2020	$	50,000	$	(1,990)	1.7165	%	One-month L	Jan-15-2025
U.S. Bank, N.A.	Feb-17-2021	Apr-18-2023	$	150,000	$	848	0.9385	%	One-month L	Feb-5-2026
Wells Fargo Bank, N.A.	Feb-17-2021	Apr-18-2023	$	75,000	$	428	0.9365	%	One-month L	Feb-5-2026
The Toronto-Dominion Bank	Feb-17-2021	Apr-18-2023	$	75,000	$	428	0.9360	%	One-month L	Feb-5-2026

Schedule of interest rate swaps

The following table summarizes the fair value of the interest rate swaps outstanding as of June 30, 2021 and December 31, 2020.

Balance Sheet Line Item (in thousands)	Notional Amount June 30, 2021		Fair Value June 30, 2021		Notional Amount December 31, 2020		Fair Value December 31, 2020
Interest rate swaps-Asset	$	300,000	$	1,704	$	—	$	—
Interest rate swaps-Liability	$	975,000	$	(28,795)	$	1,125,000	$	(40,656)

Schedule of the location in the financial statements of the gain or loss recognized on interest rate swaps

The following table summarizes the effect of cash flow hedge accounting and the location in the consolidated financial statements for the three and six months ended June 30, 2021 and 2020.

	Three months ended June 30,				Six months ended June 30,
Effect of Cash Flow Hedge Accounting (in thousands)	2021		2020		2021		2020
Income (loss) recognized in accumulated other comprehensive loss on interest rate swaps	$	(2,501)	$	(5,249)	$	5,249	$	(36,336)
Loss reclassified from accumulated other comprehensive loss into income as interest expense	$	3,933	$	3,240	$	8,333	$	4,136
Total interest expense presented in the Consolidated Statements of Operations in which the effects of cash flow hedges are recorded	$	15,273	$	15,333	$	30,631	$	30,197

Schedule of financial instruments accounted for at fair value on a recurring basis

The following table summarizes the Company’s financial instruments that are accounted for at fair value on a recurring basis as of June 30, 2021 and December 31, 2020. 

			Fair Value Measurements as of June 30, 2021 Using
Balance Sheet Line Item (in thousands)	Fair Value June 30, 2021		Level 1		Level 2		Level 3
Interest rate swaps-Asset	$	1,704	$	—	$	1,704	$	—
Interest rate swaps-Liability	$	(28,795)	$	—	$	(28,795)	$	—

			Fair Value Measurements as of December 31, 2020 Using
Balance Sheet Line Item (in thousands)	Fair Value December 31, 2020		Level 1		Level 2		Level 3
Interest rate swaps-Asset	$	—	$	—	$	—	$	—
Interest rate swaps-Liability	$	(40,656)	$	—	$	(40,656)	$	—

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Equity (Tables)

6 Months Ended

Jun. 30, 2021

Stockholders' Equity Note [Abstract]

Dividends Declared [Table Text Block]

The following tables summarize the dividends attributable to the Company’s outstanding preferred stock issuances during the three months ended March 31, 2021 and the year ended December 31, 2020.

Quarter Ended 2021	Declaration Date	Series C Preferred Stock Per Share		Payment Date
March 31	January 11, 2021	$	0.4296875	March 31, 2021
Total		$	0.4296875

Quarter Ended 2020	Declaration Date	Series C Preferred Stock Per Share		Payment Date
December 31	October 9, 2020	$	0.4296875	December 31, 2020
September 30	July 9, 2020	0.4296875		September 30, 2020
June 30	April 9, 2020	0.4296875		June 30, 2020
March 31	January 8, 2020	0.4296875		March 31, 2020
Total		$	1.7187500

Schedule of stock sale activity

The following table summarizes the terms of the Company’s at-the market (“ATM”) common stock offering program as of June 30, 2021.

ATM Common Stock Offering Program	Date	Maximum Aggregate Offering Price (in thousands)		Aggregate Common Stock Available as of June 30, 2021 (in thousands)
2019 $600 million ATM	February 14, 2019	$	600,000	$	204,023

The table below summarizes the activity under the ATM common stock offering program during the six months ended June 30, 2021 (in thousands, except share data). There was no activity under the ATM common stock offering program during the year ended December 31, 2020.

	Six months ended June 30, 2021
ATM Common Stock Offering Program(1)	Shares Sold	Weighted Average Price Per Share		Net Proceeds
2019 $600 million ATM	1,888,290	$	34.01	$	63,583
Total/weighted average	1,888,290	$	34.01	$	63,583

(1)Includes transactions settled during the period and excludes ATM issuances on a forward basis.

On April 5, 2021, the Company sold 1,446,760 shares on a forward basis under the ATM common stock offering program at a price of $34.56 per share, or $50.0 million, and $34.2144 per share net of sales agent fees. The Company does not initially receive any proceeds from the sale of shares on a forward basis. The Company may elect to cash settle or net share settle the forward sale agreement at any time through the scheduled maturity date of April 5, 2022.

Subsequent to June 30, 2021, the Company sold 1,719,849 shares under the ATM common stock offering program at a price of $37.98 per share, or $65.3 million, and $37.67 per share net of sales agent fees.

Common Stock Dividends Declared [Table Text Block]

The following tables summarize the dividends attributable to the Company’s outstanding shares of common stock that were declared during the six months ended June 30, 2021 and the year ended December 31, 2020.

Month Ended 2021	Declaration Date	Record Date	Per Share		Payment Date
June 30	April 12, 2021	June 30, 2021	$	0.120833	July 15, 2021
May 31	April 12, 2021	May 28, 2021	0.120833		June 15, 2021
April 30	April 12, 2021	April 30, 2021	0.120833		May 17, 2021
March 31	January 11, 2021	March 31, 2021	0.120833		April 15, 2021
February 28	January 11, 2021	February 26, 2021	0.120833		March 15, 2021
January 31	January 11, 2021	January 29, 2021	0.120833		February 16, 2021
Total			$	0.724998

Month Ended 2020	Declaration Date	Record Date	Per Share		Payment Date
December 31	October 9, 2020	December 31, 2020	$	0.12	January 15, 2021
November 30	October 9, 2020	November 30, 2020	0.12		December 15, 2020
October 31	October 9, 2020	October 30, 2020	0.12		November 16, 2020
September 30	July 9, 2020	September 30, 2020	0.12		October 15, 2020
August 31	July 9, 2020	August 31, 2020	0.12		September 15, 2020
July 31	July 9, 2020	July 31, 2020	0.12		August 17, 2020
June 30	April 9, 2020	June 30, 2020	0.12		July 15, 2020
May 31	April 9, 2020	May 29, 2020	0.12		June 15, 2020
April 30	April 9, 2020	April 30, 2020	0.12		May 15, 2020
March 31	January 8, 2020	March 31, 2020	0.12		April 15, 2020
February 29	January 8, 2020	February 28, 2020	0.12		March 16, 2020
January 31	January 8, 2020	January 31, 2020	0.12		February 18, 2020
Total			$	1.44

On July 13, 2021, the Company’s board of directors declared the common stock dividends for the months ending July 31, 2021, August 31, 2021, and September 30, 2021 at a monthly rate of $0.120833 per share of common stock.

Schedule of activity related to unvested restricted stock awards

The following table summarizes activity related to the Company’s unvested restricted shares of common stock for the six months ended June 30, 2021 and the year ended December 31, 2020.

Unvested Restricted Shares of Common Stock	Shares		Weighted Average Grant Date Fair Value per Share
Balance at December 31, 2019	193,045		$	24.38
Granted	75,419	(1)	$	31.60
Vested	(81,408)	(2)	$	23.46
Forfeited	(2,166)		$	26.92
Balance at December 31, 2020	184,890		$	27.70
Granted	90,304	(1)	$	29.77
Vested	(72,788)	(2)	$	26.76
Forfeited	(521)		$	28.06
Balance at June 30, 2021	201,885		$	28.96

(1)The fair value per share on the grant date of January 7, 2021, February 13, 2020, and January 8, 2020, was $29.77, $32.64, and $31.49, respectively.

(2)The Company repurchased and retired 25,840 and 34,117 restricted shares of common stock that vested during the six months ended June 30, 2021 and the year ended December 31, 2020, respectively.

Schedule of vested restricted shares of common stock activity

The following table summarizes the fair value at vesting for the restricted shares of common stock that vested during the three and six months ended June 30, 2021 and 2020.

	Three months ended June 30,				Six months ended June 30,
Vested Restricted Shares of Common Stock	2021		2020		2021		2020
Vested restricted shares of common stock	—		—		72,788		78,010
Fair value of vested restricted shares of common stock (in thousands)	$	—	$	—	$	2,280	$	2,463

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Noncontrolling Interest (Tables)

6 Months Ended

Jun. 30, 2021

Noncontrolling Interest [Abstract]

Noncontrolling interest activity

The following table summarizes the activity for noncontrolling interest in the Company for the six months ended June 30, 2021 and the year ended December 31, 2020.

Noncontrolling Interest	LTIP Units	Other Common Units	Total Noncontrolling Common Units	Noncontrolling Interest
Balance at December 31, 2019	1,697,358	2,039,494	3,736,852	2.5	%
Granted/Issued	278,806	—	278,806	N/A
Forfeited	—	—	—	N/A
Conversions from LTIP units to Other Common Units	(283,741)	283,741	—	N/A
Redemptions from Other Common Units to common stock	—	(730,420)	(730,420)	N/A
Balance at December 31, 2020	1,692,423	1,592,815	3,285,238	2.0	%
Granted/Issued	405,844	—	405,844	N/A
Forfeited	—	—	—	N/A
Conversions from LTIP units to Other Common Units	(97,159)	97,159	—	N/A
Redemptions from Other Common Units to common stock	—	(119,334)	(119,334)	N/A
Balance at June 30, 2021	2,001,108	1,570,640	3,571,748	2.2	%

Schedule of share-based payment award, LTIP unit awards, valuation assumptions

The following table summarizes the assumptions used in valuing such LTIP units granted during the six months ended June 30, 2021 (excluding those LTIP units granted pursuant to the 2018 performance units; refer to Note 8 for details).

LTIP Units	Assumptions
Grant date	January 7, 2021
Expected term (years)	10
Expected volatility	34.0		%
Expected dividend yield	5.0		%
Risk-free interest rate	0.229		%
Fair value of LTIP units at issuance (in thousands)	$	4,316
LTIP units at issuance	153,430
Fair value unit price per LTIP unit at issuance	$	28.13

Schedule of activity related to unvested LTIP unit awards

The following table summarizes activity related to the Company’s unvested LTIP units for the six months ended June 30, 2021 and the year ended December 31, 2020.

Unvested LTIP Units	LTIP Units	Weighted Average Grant Date Fair Value per Share
Balance at December 31, 2019	227,348	$	23.37
Granted	278,806	$	29.47
Vested	(294,706)	$	26.87
Forfeited	—	$	—
Balance at December 31, 2020	211,448	$	26.54
Granted	405,844	$	28.13
Vested	(228,821)	$	27.33
Forfeited	—	$	—
Balance at June 30, 2021	388,471	$	27.74

Schedule of vested LTIP unit award activity

The following table summarizes the fair value at vesting for the LTIP units that vested during the three and six months ended June 30, 2021 and 2020.

	Three months ended June 30,				Six months ended June 30,
Vested LTIP units	2021		2020		2021		2020
Vested LTIP units	45,335		43,958		228,821		174,145
Fair value of vested LTIP units (in thousands)	$	1,686	$	1,213	$	7,369	$	5,074

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Equity Incentive Plan (Tables)

6 Months Ended

Jun. 30, 2021

Share-based Payment Arrangement [Abstract]

Schedule of share-based payment award, performance unit awards, valuation assumptions

The following table summarizes the assumptions used in valuing the performance units granted during the six months ended June 30, 2021.

Performance Units	Assumptions
Grant date	January 7, 2021
Expected volatility	34.4		%
Expected dividend yield	5.0		%
Risk-free interest rate	0.2271		%
Fair value of performance units grant (in thousands)	$	5,522

Summary of Equity Compensation Expense

The following table summarizes the amount recorded in general and administrative expenses in the accompanying Consolidated Statements of Operations for the amortization of restricted shares of common stock, LTIP units, performance units, and the Company’s director compensation for the three and six months ended June 30, 2021 and 2020.

	Three months ended June 30,				Six months ended June 30,
Non-Cash Compensation Expense (in thousands)	2021		2020		2021		2020
Restricted shares of common stock	$	586	$	481	$	1,237	$	948
LTIP units	2,346		978		4,754		1,942
Performance units	1,484		1,341		2,922		2,648
Director compensation (1)	123		138		241		252
Total non-cash compensation expense	$	4,539	$	2,938	$	9,154	$	5,790

(1)All of the Company’s independent directors elected to receive shares of common stock in lieu of cash for their service during the three and six months ended June 30, 2021 and 2020. The number of shares of common stock granted is calculated based on the trailing ten days average common stock price ending on the third business day preceding the grant date.

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Leases (Tables)

6 Months Ended

Jun. 30, 2021

Leases [Abstract]

Operating Lease, Lease Income [Table Text Block]

The following table summarizes the components of rental income recognized during the three and six months ended June 30, 2021 and 2020 included in the accompanying Consolidated Statements of Operations.

	Three months ended June 30,				Six months ended June 30,
Rental Income (in thousands)	2021		2020		2021		2020
Fixed lease payments	$	103,778	$	91,234	$	204,957	$	181,630
Variable lease payments	29,639		25,588		58,883		50,594
Straight-line rental income	4,718		1,823		9,600		5,750
Net decrease to rental income related to above and below market lease amortization	(330)		(1,174)		(1,810)		(2,164)
Total rental income	$	137,805	$	117,471	$	271,630	$	235,810

Lessor, Operating Lease, Payments to be Received, Maturity

The following table summarizes the maturity of fixed lease payments under the Company’s leases as of June 30, 2021.

Year	Maturity of Fixed Lease Payments (in thousands)
Remainder of 2021	$	208,202
2022	$	396,672
2023	$	355,331
2024	$	304,926
2025	$	251,700
Thereafter	$	942,803

Lease, Cost [Table Text Block]

The following table summarizes supplemental information related to operating lease right-of-use assets and operating lease liabilities recognized in the Company’s Consolidated Balance Sheets as of June 30, 2021 and December 31, 2020.

Operating Lease Term and Discount Rate	June 30, 2021		December 31, 2020
Weighted average remaining lease term (years)	29.6		29.9
Weighted average discount rate	6.8	%	6.8	%

The following table summarizes the operating lease cost recognized during the three and six months ended June 30, 2021 and 2020 included in the Company’s Consolidated Statements of Operations.

	Three months ended June 30,				Six months ended June 30,
Operating Lease Cost (in thousands)	2021		2020		2021		2020
Operating lease cost included in property expense attributable to ground leases	$	417	$	331	$	834	$	662
Operating lease cost included in general and administrative expense attributable to corporate office lease	429		423		858		741
Total operating lease cost	$	846	$	754	$	1,692	$	1,403

The following table summarizes supplemental cash flow information related to operating leases recognized during the six months ended June 30, 2021 and 2020 in the Company’s Consolidated Statements of Cash Flows.

	Six months ended June 30,
Operating Leases (in thousands)	2021		2020
Cash paid for amounts included in the measurement of lease liabilities (operating cash flows)	$	952	$	1,143
Right-of-use assets obtained in exchange for new lease liabilities	$	—	$	7,718

Lessee, Operating Lease, Liability, Maturity [Table Text Block]

The following table summarizes the maturity of operating lease liabilities under the Company’s ground leases and corporate office lease as of June 30, 2021.

Year	Maturity of Operating Lease Liabilities(1) (in thousands)
Remainder of 2021	$	1,357
2022	3,188
2023	3,248
2024	3,291
2025	3,336
Thereafter	62,365
Total lease payments	76,785
Less: Imputed interest	(48,947)
Present value of operating lease liabilities	$	27,838

(1)Operating lease liabilities do not include estimates of CPI rent changes required by certain ground lease agreements. Therefore, actual payments may differ than those presented.

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Earnings Per Share (Tables)

6 Months Ended

Jun. 30, 2021

Earnings Per Share [Abstract]

Schedule of computation of basic and diluted earnings per common share

The following table reconciles the numerators and denominators in the computation of basic and diluted earnings per common share for the three and six months ended June 30, 2021 and 2020.

	Three months ended June 30,				Six months ended June 30,
Earnings Per Share (in thousands, except per share data)	2021		2020		2021		2020
Numerator
Net income attributable to common stockholders	$	32,576	$	17,552	$	53,507	$	79,635
Denominator
Weighted average common shares outstanding — basic	159,736		148,663		159,086		148,116
Effect of dilutive securities(1)
Share-based compensation	584		364		467		225
Shares issuable under forward sales agreements	1,047		—		696		—
Weighted average common shares outstanding — diluted	161,367		149,027		160,249		148,341
Net income per share — basic and diluted
Net income per share attributable to common stockholders — basic	$	0.20	$	0.12	$	0.34	$	0.54
Net income per share attributable to common stockholders — diluted	$	0.20	$	0.12	$	0.33	$	0.54

(1)During the three and six months ended June 30, 2021 and 2020, there were approximately 202, 201, 190 and 186, unvested shares of restricted common stock, respectively, on a weighted average basis that were not included in the computation of diluted earnings per share because the allocation of income under the two-class method was more dilutive.

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Organization and Description of Business (Details) ft² in Millions	6 Months Ended	12 Months Ended
	Jun. 30, 2021 ft² state building	Dec. 31, 2020
Real Estate Properties [Line Items]
Number of properties	501
Number of states in which the entity owned buildings | state	39
Area (in square feet) | ft²	100.1
STAG Industrial, Inc. [Member]
Real Estate Properties [Line Items]
Ownership interest in Operating Partnership (as a percent)	97.80%	98.00%
Warehouse - Distribution buildings
Real Estate Properties [Line Items]
Number of properties	421
Light Manufacturing buildings
Real Estate Properties [Line Items]
Number of properties	73
Flex/Office Buildings
Real Estate Properties [Line Items]
Number of properties	7

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Organization, Consolidation and Presentation of Financial Statements - COVID-19 Pandemic (Details) - USD ($)	3 Months Ended	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2021
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Rent Deferrals Granted	$ 0	$ 0

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Summary of Significant Accounting Policies - Restricted Cash (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020	Jun. 30, 2020	Dec. 31, 2019
Accounting Policies [Abstract]
Cash and cash equivalents	$ 14,588	$ 15,666
Restricted cash	3,927	4,673
Cash and cash equivalents and restricted cash—end of period	$ 18,515	$ 20,339	$ 114,602	$ 11,864

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Summary of Significant Accounting Policies - Policy Updates (Details) - USD ($) $ in Millions		3 Months Ended		6 Months Ended
	Jan. 07, 2021	Mar. 31, 2022	Jun. 30, 2021	Jun. 30, 2021
Defined Benefit Plan Disclosure [Line Items]
Notification period	6 months
Employee Retirement Vesting Program
Defined Benefit Plan Disclosure [Line Items]
Share-based Payment Arrangement, Accelerated Cost			$ 1.4	$ 2.9
Employee Retirement Vesting Program | Scenario, Forecast [Member]
Defined Benefit Plan Disclosure [Line Items]
Share-based Payment Arrangement, Accelerated Cost		$ 2.4

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Summary of Significant Accounting Policies - Taxes (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020
Business Acquisition [Line Items]
Net income	$ 33,383,000	$ 19,316,000	$ 58,731,000	$ 84,354,000
State and local income, excise and franchise taxes	400,000	500,000	800,000	900,000
State and local income, excise and franchise taxes	400,000	500,000	800,000	900,000
Liabilities for uncertain tax positions	0		0		$ 0
Real Estate Investment Trust
Business Acquisition [Line Items]
Net income	$ (4,000)	$ 0	$ (4,000)	$ 0

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Rental Property - Summary (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Property Subject to or Available for Operating Lease [Line Items]
Rental property, net	$ 4,623,908	$ 4,525,193
Deferred leasing intangible assets, accumulated amortization	260,893	258,005
Land
Property Subject to or Available for Operating Lease [Line Items]
Rental property, net	510,413	492,783
Buildings, net of accumulated depreciation of $366,571 and $327,043, respectively
Property Subject to or Available for Operating Lease [Line Items]
Rental property, net	3,306,299	3,195,439
Rental property, accumulated depreciation	366,571	327,043
Tenant improvements, net of accumulated depreciation of $25,078 and $24,891, respectively
Property Subject to or Available for Operating Lease [Line Items]
Rental property, net	41,000	43,684
Rental property, accumulated depreciation	25,078	24,891
Building and land improvements, net of accumulated depreciation of $161,318 and $143,414, respectively
Property Subject to or Available for Operating Lease [Line Items]
Rental property, net	278,759	275,433
Rental property, accumulated depreciation	161,318	143,414
Construction in progress
Property Subject to or Available for Operating Lease [Line Items]
Rental property, net	4,765	18,052
Deferred leasing intangibles, net of accumulated amortization of $260,893 and $258,005, respectively
Property Subject to or Available for Operating Lease [Line Items]
Rental property, net	$ 482,672	$ 499,802

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Rental Property - Acquisitions (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021 USD ($) ft² building	Mar. 31, 2021 USD ($) ft² building	Jun. 30, 2021 USD ($) ft² building
Business Acquisition [Line Items]
Area (in square feet)	100,100,000		100,100,000
Acquisitions 2021
Business Acquisition [Line Items]
Area (in square feet)	2,601,590		2,601,590
Number of properties | building			15
Business Combination, Consideration Transferred | $			$ 226,949
Acquistions Q1 2021
Business Acquisition [Line Items]
Area (in square feet)		1,252,323
Number of properties | building		6
Business Combination, Consideration Transferred | $		$ 100,228
Bellevue, NE, 1-21-21
Business Acquisition [Line Items]
Area (in square feet)		370,000
Number of properties | building		1
Business Combination, Consideration Transferred | $		$ 24,922
Inver Grove Heigh, MN, 2-24-21
Business Acquisition [Line Items]
Area (in square feet)		80,655
Number of properties | building		1
Business Combination, Consideration Transferred | $		$ 10,174
Ronkonkoma, NY, 2-25-21
Business Acquisition [Line Items]
Area (in square feet)		64,224
Number of properties | building		1
Business Combination, Consideration Transferred | $		$ 8,516
Sacramento, CA, 2-25-21
Business Acquisition [Line Items]
Area (in square feet)		267,284
Number of properties | building		1
Business Combination, Consideration Transferred | $		$ 25,917
Bryant, AR, 3-1-1
Business Acquisition [Line Items]
Area (in square feet)		300,160
Number of properties | building		1
Business Combination, Consideration Transferred | $		$ 24,317
Maple Heights, OH, 3-18-21
Business Acquisition [Line Items]
Area (in square feet)		170,000
Number of properties | building		1
Business Combination, Consideration Transferred | $		$ 6,382
Acquisitions Q2 2021 [Member]
Business Acquisition [Line Items]
Area (in square feet)	1,349,267		1,349,267
Number of properties | building	9
Business Combination, Consideration Transferred | $	$ 126,721
Greenwood, IN - 5-17-21
Business Acquisition [Line Items]
Area (in square feet)	154,440		154,440
Number of properties | building	1
Business Combination, Consideration Transferred | $	$ 13,655
Hunt Valley, MD, 5-17-21
Business Acquisition [Line Items]
Area (in square feet)	46,851		46,851
Number of properties | building	1
Business Combination, Consideration Transferred | $	$ 6,228
Warren, MI - 6-1-1
Business Acquisition [Line Items]
Area (in square feet)	248,040		248,040
Number of properties | building	1
Business Combination, Consideration Transferred | $	$ 23,786
Appleton, WI - 6-7-1
Business Acquisition [Line Items]
Area (in square feet)	152,000		152,000
Number of properties | building	1
Business Combination, Consideration Transferred | $	$ 7,249
Gilbert, AZ - 6-14-21
Business Acquisition [Line Items]
Area (in square feet)	41,504		41,504
Number of properties | building	1
Business Combination, Consideration Transferred | $	$ 8,670
Strongsville, OH - 6-17-21
Business Acquisition [Line Items]
Area (in square feet)	179,577		179,577
Number of properties | building	1
Business Combination, Consideration Transferred | $	$ 19,602
Fernley, NV - 6-30-21
Business Acquisition [Line Items]
Area (in square feet)	183,435		183,435
Number of properties | building	1
Business Combination, Consideration Transferred | $	$ 13,892
Hagerstown, MD - 6-30-21
Business Acquisition [Line Items]
Area (in square feet)	193,420		193,420
Number of properties | building	1
Business Combination, Consideration Transferred | $	$ 17,521
Stockton, CA - 6-30-21
Business Acquisition [Line Items]
Area (in square feet)	150,000		150,000
Number of properties | building	1
Business Combination, Consideration Transferred | $	$ 16,118

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Rental Property - Acquisitions - Allocation of Consideration (Details) - USD ($) $ in Thousands		6 Months Ended
	Feb. 25, 2021	Jun. 30, 2021	Jun. 30, 2020
Allocation of the consideration paid for the acquired assets and liabilities
Land		$ 21,844
Buildings		165,549
Tenant improvements		1,575
Building and land improvements		9,435
Total purchase price		226,949
Less: Mortgage notes assumed		(5,103)
Net assets acquired		$ 221,846
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Long-term Debt, Fair Value Adjustment, Weighted Average Useful Life		18 years 9 months 18 days
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Long-term Debt, Fair Value Adjustment		$ 161
Assumption of mortgage notes		5,103	$ 0
Ronkonkoma, NY, 2-25-21
Allocation of the consideration paid for the acquired assets and liabilities
Assumption of mortgage notes	$ 5,100
In-place leases
Allocation of the consideration paid for the acquired assets and liabilities
Deferred leasing intangibles		$ (20,206)
Weighted average amortization period of lease intangibles		8 years 6 months
Tenant relationships
Allocation of the consideration paid for the acquired assets and liabilities
Deferred leasing intangibles		$ (9,761)
Weighted average amortization period of lease intangibles		11 years 4 months 24 days
Above market leases
Allocation of the consideration paid for the acquired assets and liabilities
Deferred leasing intangibles		$ (2,279)
Weighted average amortization period of lease intangibles		13 years 9 months 18 days
Below market leases
Allocation of the consideration paid for the acquired assets and liabilities
Deferred leasing intangibles		$ 3,861
Weighted average amortization period of lease intangibles		6 years 4 months 24 days

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Rental Property - Acquisitions - Results of Operations (Details) - Acquisitions 2021 - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2021
Business Acquisition [Line Items]
Revenue	$ 2,219	$ 3,506
Net income (loss)	$ 284	$ 307

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Rental Property - Disposals (Details) ft² in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021 USD ($) ft² building	Jun. 30, 2020 USD ($)	Jun. 30, 2021 USD ($) ft² building	Jun. 30, 2020 USD ($)	Dec. 31, 2020 USD ($)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of buildings disposed | building	501		501
Area (in square feet) | ft²	100.1		100.1
Carrying value of property sold	$ 4,623,908,000		$ 4,623,908,000		$ 4,525,193,000
Disposal Group, Disposed of by Sale, Not Discontinued Operations
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of buildings disposed | building	6		6
Area (in square feet) | ft²	0.9		0.9
Carrying value of property sold	$ 27,200,000		$ 27,200,000
Contribution to revenue	200,000	$ 1,100,000	500,000	$ 2,100,000
Disposal Group, Including Discontinued Operation, Operating Income (Loss)	$ 100,000	$ 500,000	100,000	$ 800,000
Net proceeds from sales of rental property			39,600,000
Gain (Loss) on Sale			$ 12,400,000

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Rental Property - Held for Sale (Details)	3 Months Ended		6 Months Ended
	Jun. 30, 2021 USD ($) building	Jun. 30, 2020 USD ($)	Jun. 30, 2021 USD ($) building	Jun. 30, 2020 USD ($)	Dec. 31, 2020 USD ($)
Long Lived Assets Held-for-sale [Line Items]
Assets held for sale, net	$ 2,737,000		$ 2,737,000		$ 444,000
Deferred leasing intangibles, net of accumulated amortization of $260,893 and $258,005, respectively	$ 482,672,000		$ 482,672,000		$ 499,802,000
Number of properties | building	501		501
Disposal Group, Held-for-sale, Not Discontinued Operations [Member]
Long Lived Assets Held-for-sale [Line Items]
Deferred leasing intangibles, net of accumulated amortization of $260,893 and $258,005, respectively	$ 0		$ 0
Number of properties | building	1		1
Contribution to revenue	$ 100,000	$ 200,000	$ 300,000	$ 300,000
Disposal Group, Including Discontinued Operation, Operating Income (Loss)	100,000	$ 100,000	200,000	$ 100,000
Disposal Group, Held-for-sale, Not Discontinued Operations [Member] | Land [Member]
Long Lived Assets Held-for-sale [Line Items]
Assets held for sale, net	800,000		800,000
Disposal Group, Held-for-sale, Not Discontinued Operations [Member] | Building and Building Improvements [Member]
Long Lived Assets Held-for-sale [Line Items]
Assets held for sale, net	$ 1,900,000		$ 1,900,000

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Rental Property - Gain on Involuntary Conversion (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Gain on involuntary conversion	$ 0	$ 657	$ 0	$ 657
Operating Income (Loss) [Member]
Gain on involuntary conversion		$ 700		$ 700

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Rental Property - Deferred Leasing Intangibles (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020
Finite-Lived Intangible Assets [Line Items]
Deferred leasing intangibles, gross	$ 743,565		$ 743,565		$ 757,807
Deferred leasing intangibles assets, accumulated amortization	(260,893)		(260,893)		(258,005)
Deferred leasing intangibles, net	482,672		482,672		499,802
Below market lease, gross	50,439		50,439		48,521
Below market lease, accumulated amortization	(17,510)		(17,510)		(15,759)
Below market lease, net	32,929		32,929		32,762
Net decrease to rental income related to above and below market lease amortization	330	$ 1,174	1,810	$ 2,164
Above market leases
Finite-Lived Intangible Assets [Line Items]
Deferred leasing intangibles, gross	86,466		86,466		92,125
Deferred leasing intangibles assets, accumulated amortization	(31,194)		(31,194)		(33,629)
Deferred leasing intangibles, net	55,272		55,272		58,496
Other intangible lease assets
Finite-Lived Intangible Assets [Line Items]
Deferred leasing intangibles, gross	657,099		657,099		665,682
Deferred leasing intangibles assets, accumulated amortization	(229,699)		(229,699)		(224,376)
Deferred leasing intangibles, net	427,400		427,400		$ 441,306
Amortization expense related to other intangible lease assets	21,422	$ 21,076	43,869	$ 41,378
Estimated Net Amortization of In-Place Leases, Leasing Commissions and Tenant Relationships
2021	38,884		38,884
Finite-Lived Intangible Asset, Expected Amortization, Year One	68,917		68,917
2022	60,313		60,313
2023	51,203		51,203
2024	43,445		43,445
Net decrease to rental income related to above and below market lease amortization
Estimated Net Amortization of In-Place Leases, Leasing Commissions and Tenant Relationships
2021	283		283
Finite-Lived Intangible Asset, Expected Amortization, Year One	327		327
2022	820		820
2023	1,286		1,286
2024	$ 1,164		$ 1,164

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Debt - Summary (Details) $ in Thousands		6 Months Ended
	Feb. 25, 2021	Jun. 30, 2021 USD ($) extention	Apr. 18, 2023	Jul. 08, 2021 USD ($)	Dec. 31, 2020 USD ($)
Debt Instrument [Line Items]
Long-term debt, gross		$ 1,890,114			$ 1,709,102
Unamortized debt issuance costs		(5,849)			(5,841)
Debt Instrument, Unamortized Discount (Premium), Net		(134)			29
Principal outstanding		$ 1,884,131			1,703,290
Weighted average interest rate		2.99%
Interest Rate Swaps
Debt Instrument [Line Items]
Derivative notional amount swapped		$ 975,000
London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument [Line Items]
Stated interest rate		0.1005%
Term Loan | London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate		1.00%
$300 Million Unsecured Term Loan [Member] | London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate	1.00%
Unsecured Credit Facility
Debt Instrument [Line Items]
Principal outstanding		$ 284,000			107,000
Debt Instrument, Maturity Date		Jan. 12, 2024
Maximum borrowing capacity		$ 750,000
Number Of Extensions | extention		2
Debt Instrument Term Extension Period		6 months
Unsecured Credit Facility | Prepaid Expenses and Other Assets
Debt Instrument [Line Items]
Unamortized debt issuance costs		$ (2,200)			(1,600)
Unsecured Credit Facility | London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate		0.90%
Unsecured Term Loans
Debt Instrument [Line Items]
Long-term debt, gross		$ 975,000			975,000
Unamortized debt issuance costs		(4,070)			(3,889)
Principal outstanding		970,930			971,111
Unsecured Term Loans | $150 Million Wells Fargo Unsecured Term Loan A
Debt Instrument [Line Items]
Long-term debt, gross		$ 150,000			150,000
Debt Instrument, Interest Rate, Effective Percentage		3.38%
Debt Instrument, Maturity Date		Mar. 31, 2022
Fixed Interest Rate (as a percent)		2.38%
Unsecured Term Loans | $150 Million Unsecured Term Loan D [Member]
Debt Instrument [Line Items]
Long-term debt, gross		$ 150,000			150,000
Debt Instrument, Interest Rate, Effective Percentage		2.85%
Debt Instrument, Maturity Date		Jan. 04, 2023
Fixed Interest Rate (as a percent)		1.85%
Unsecured Term Loans | $175 Million Unsecured Term Loan E [Member]
Debt Instrument [Line Items]
Long-term debt, gross		$ 175,000			175,000
Debt Instrument, Interest Rate, Effective Percentage		3.92%
Debt Instrument, Maturity Date		Jan. 15, 2024
Fixed Interest Rate (as a percent)		2.92%
Unsecured Term Loans | $200 Million Unsecured Term Loan F [Member]
Debt Instrument [Line Items]
Long-term debt, gross		$ 200,000			200,000
Debt Instrument, Interest Rate, Effective Percentage		3.11%
Debt Instrument, Maturity Date		Jan. 12, 2025
Fixed Interest Rate (as a percent)		2.11%
Unsecured Term Loans | $300 Million Unsecured Term Loan [Member]
Debt Instrument [Line Items]
Long-term debt, gross		$ 300,000			300,000
Debt Instrument, Interest Rate, Effective Percentage		1.28%
Debt Instrument, Maturity Date		Feb. 05, 2026
Fixed Interest Rate (as a percent)		0.28%
Unsecured Term Loans | $300 Million Unsecured Term Loan [Member] | Scenario, Forecast [Member]
Debt Instrument [Line Items]
Fixed Interest Rate (as a percent)			0.94%
Unsecured Notes
Debt Instrument [Line Items]
Long-term debt, gross		$ 575,000			575,000
Unamortized debt issuance costs		(1,610)			(1,719)
Principal outstanding		573,390			573,281
Unsecured Notes | $100 Million Series F Unsecured Notes
Debt Instrument [Line Items]
Long-term debt, gross		$ 100,000			100,000
Stated interest rate		3.98%
Debt Instrument, Maturity Date		Jan. 05, 2023
Unsecured Notes | $50 Million Series A Unsecured Notes
Debt Instrument [Line Items]
Long-term debt, gross		$ 50,000			50,000
Stated interest rate		4.98%
Debt Instrument, Maturity Date		Oct. 01, 2024
Unsecured Notes | $100 Million Series D Unsecured Notes
Debt Instrument [Line Items]
Long-term debt, gross		$ 100,000			100,000
Stated interest rate		4.32%
Debt Instrument, Maturity Date		Feb. 20, 2025
Unsecured Notes | $75 Million Series G Unsecured Notes [Member]
Debt Instrument [Line Items]
Long-term debt, gross		$ 75,000			75,000
Stated interest rate		4.10%
Debt Instrument, Maturity Date		Jun. 13, 2025
Unsecured Notes | $50 Million Series B Unsecured Notes
Debt Instrument [Line Items]
Long-term debt, gross		$ 50,000			50,000
Stated interest rate		4.98%
Debt Instrument, Maturity Date		Jul. 01, 2026
Unsecured Notes | $80 Million Series C Unsecured Notes
Debt Instrument [Line Items]
Long-term debt, gross		$ 80,000			80,000
Stated interest rate		4.42%
Debt Instrument, Maturity Date		Dec. 30, 2026
Unsecured Notes | $20 Million Series E Unsecured Notes
Debt Instrument [Line Items]
Long-term debt, gross		$ 20,000			20,000
Stated interest rate		4.42%
Debt Instrument, Maturity Date		Feb. 20, 2027
Unsecured Notes | $100 Million Series H Unsecured Notes [Member]
Debt Instrument [Line Items]
Long-term debt, gross		$ 100,000			100,000
Stated interest rate		4.27%
Debt Instrument, Maturity Date		Jun. 13, 2028
Unsecured Notes | $275 Million Series Unsecured Notes | Subsequent Event [Member]
Debt Instrument [Line Items]
Long-term debt, gross				$ 275,000
Stated interest rate				2.80%
Unsecured Notes | $50 Million Unsecured Notes | Subsequent Event [Member]
Debt Instrument [Line Items]
Long-term debt, gross				$ 50,000
Stated interest rate				2.95%
Mortgage Loans Payable
Debt Instrument [Line Items]
Long-term debt, gross		$ 56,114			52,102
Unamortized debt issuance costs		(169)			(233)
Debt Instrument, Unamortized Discount (Premium), Net		(134)			29
Principal outstanding		55,811			51,898
Mortgage Loans Payable | Wells Fargo Bank, National Association CMBS Loan
Debt Instrument [Line Items]
Long-term debt, gross		$ 47,580			48,546
Stated interest rate		4.31%
Debt Instrument, Maturity Date		Dec. 01, 2022
Penalty free prepayment period		3 months
Mortgage Loans Payable | Thrivent Financial for Lutherans Due December 15, 2023 [Member]
Debt Instrument [Line Items]
Long-term debt, gross		$ 3,494			3,556
Stated interest rate		4.78%
Debt Instrument, Maturity Date		Dec. 15, 2023
Penalty free prepayment period		3 months
Mortgage Loans Payable | United of Omaha Life Insurance Company
Debt Instrument [Line Items]
Long-term debt, gross		$ 5,040			$ 0
Stated interest rate		3.71%
Debt Instrument, Maturity Date		Oct. 01, 2039

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Debt - 2021 Activity (Details) - USD ($) $ in Thousands			3 Months Ended		6 Months Ended		12 Months Ended
	Feb. 25, 2021	Feb. 05, 2021	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020	Apr. 17, 2020
Debt Instrument [Line Items]
Debt Instrument, Unused Borrowing Capacity, Amount			$ 463,100		$ 463,100
Assumption of mortgage notes					5,103	$ 0
Debt Instrument, Unamortized Discount (Premium), Net			134		$ 134		$ (29)
Debt Instrument, Covenant Compliance					The Company was in compliance with all financial and other covenants		The Company was in compliance with all financial and other covenants
Net book value of properties that are collateral for debt arrangements			89,300		$ 89,300		$ 81,400
Long-term debt, gross			1,890,114		$ 1,890,114		$ 1,709,102
Fair Value, Nonrecurring
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Effective Percentage	4.10%
Ronkonkoma, NY, 2-25-21
Debt Instrument [Line Items]
Assumption of mortgage notes	$ 5,100
Unsecured Credit Facility
Debt Instrument [Line Items]
Debt Issuance Costs, Gross		$ 1,200
Unsecured Credit Facility | London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate					0.90%
Interest Expense [Member]
Debt Instrument [Line Items]
Amortization of deferred financing fees			789	$ 746	$ 1,276	1,422
Line of Credit Facility, Commitment Fee Amount			440	316	826	680
Accounts Payable and Accrued Liabilities [Member]
Debt Instrument [Line Items]
Interest payable			$ 6,300	$ 6,300	6,300	$ 6,300
United of Omaha Life Insurance Company | Ronkonkoma, NY, 2-25-21
Debt Instrument [Line Items]
Assumption of mortgage notes	5,100
Debt Instrument, Unamortized Discount (Premium), Net	$ 200
$300 Million Unsecured Term Loan [Member]
Debt Instrument [Line Items]
Write off of Deferred Debt Issuance Cost					700
Debt Issuance Costs, Gross		$ 1,600
Deferred Financing Accrued Extension Fee								$ 1,100
$300 Million Unsecured Term Loan [Member] | London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate	1.00%
Debt Instrument, Basis Spread on Variable Rate, Floor		0.00%
$300 Million Unsecured Term Loan [Member] | Minimum [Member] | London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate		0.85%
$300 Million Unsecured Term Loan [Member] | Minimum [Member] | Base Rate
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate		1.00%
$300 Million Unsecured Term Loan [Member] | Maximum [Member] | London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate		1.65%
$300 Million Unsecured Term Loan [Member] | Interest Expense [Member]
Debt Instrument [Line Items]
Write off of Deferred Debt Issuance Cost					$ 300

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Debt - Fair Value (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Debt Instrument [Line Items]
Long-term debt, gross	$ 1,890,114	$ 1,709,102
Unamortized debt issuance costs	(5,849)	(5,841)
Principal outstanding	1,884,131	1,703,290
Long-term debt, fair value	1,949,251	1,768,508
Debt Instrument, Unamortized Discount (Premium), Net	(134)	29
Unsecured Credit Facility
Debt Instrument [Line Items]
Principal outstanding	284,000	107,000
Long-term debt, fair value	284,558	107,000
Unsecured Term Loans
Debt Instrument [Line Items]
Long-term debt, gross	975,000	975,000
Unamortized debt issuance costs	(4,070)	(3,889)
Principal outstanding	970,930	971,111
Long-term debt, fair value	979,222	978,448
Unsecured Notes
Debt Instrument [Line Items]
Long-term debt, gross	575,000	575,000
Unamortized debt issuance costs	(1,610)	(1,719)
Principal outstanding	573,390	573,281
Long-term debt, fair value	627,036	628,575
Mortgage Loans Payable
Debt Instrument [Line Items]
Long-term debt, gross	56,114	52,102
Unamortized debt issuance costs	(169)	(233)
Principal outstanding	55,811	51,898
Long-term debt, fair value	58,435	54,485
Debt Instrument, Unamortized Discount (Premium), Net	$ (134)	$ 29

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Derivative Financial Instruments - Risk Management and Unsecured Loan Swaps (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Interest Rate Swaps
Unsecured Term Loan Swaps
Notional amount liabilities	$ 975,000	$ 1,125,000
Notional amount assets	300,000	$ 0
Interest Rate Derivative, Wells Fargo Bank, March 20, 2015
Unsecured Term Loan Swaps
Notional amount liabilities	25,000
Derivative Liability, Fair Value, Gross Liability	$ (324)
Fixed Interest Rate (as a percent)	1.828%
Interest Rate Derivative, The Toronto-Dominion Bank, February 14, 2020
Unsecured Term Loan Swaps
Notional amount liabilities	$ 25,000
Derivative Liability, Fair Value, Gross Liability	$ (441)
Fixed Interest Rate (as a percent)	2.4535%
Interest Rate Derivative, Regions Bank, February 14, 2020
Unsecured Term Loan Swaps
Notional amount liabilities	$ 50,000
Derivative Liability, Fair Value, Gross Liability	$ (891)
Fixed Interest Rate (as a percent)	2.475%
Interest Rate Derivative, Capital One, February 14, 2020
Unsecured Term Loan Swaps
Notional amount liabilities	$ 50,000
Derivative Liability, Fair Value, Gross Liability	$ (912)
Fixed Interest Rate (as a percent)	2.53%
Interest Rate Derivative, The Toronto-Dominion Bank, October 30, 2017
Unsecured Term Loan Swaps
Notional amount liabilities	$ 25,000
Derivative Liability, Fair Value, Gross Liability	$ (637)
Fixed Interest Rate (as a percent)	1.8485%
Interest Rate Derivative, Royal Bank of Canada, October 30, 2017
Unsecured Term Loan Swaps
Notional amount liabilities	$ 25,000
Derivative Liability, Fair Value, Gross Liability	$ (638)
Fixed Interest Rate (as a percent)	1.8505%
Interest Rate Derivative, Wells Fargo Bank, October 30, 2017
Unsecured Term Loan Swaps
Notional amount liabilities	$ 25,000
Derivative Liability, Fair Value, Gross Liability	$ (638)
Fixed Interest Rate (as a percent)	1.8505%
Interest Rate Derivative, PNC Bank, $25m, October 30, 2017
Unsecured Term Loan Swaps
Notional amount liabilities	$ 25,000
Derivative Liability, Fair Value, Gross Liability	$ (637)
Fixed Interest Rate (as a percent)	1.8485%
Interest Rate Derivative, PNC Bank, $50m, October 30, 2017
Unsecured Term Loan Swaps
Notional amount liabilities	$ 50,000
Derivative Liability, Fair Value, Gross Liability	$ (1,273)
Fixed Interest Rate (as a percent)	1.8475%
Interest Rate Derivative, TD Bank, $75m, Sep 29, 2020
Unsecured Term Loan Swaps
Notional amount liabilities	$ 75,000
Derivative Liability, Fair Value, Gross Liability	$ (64)
Fixed Interest Rate (as a percent)	0.275%
Interest Rate Derivative, Wells Fargo Bank, $75m, Sep 29, 2020
Unsecured Term Loan Swaps
Notional amount liabilities	$ 75,000
Derivative Liability, Fair Value, Gross Liability	$ (70)
Fixed Interest Rate (as a percent)	0.279%
Interest Rate Derivative, TD Bank, $75m, March 19, 2021
Unsecured Term Loan Swaps
Notional amount liabilities	$ 75,000
Derivative Liability, Fair Value, Gross Liability	$ (64)
Fixed Interest Rate (as a percent)	0.275%
Interest Rate Derivative, Wells Fargo Bank, $75m, March 19, 2021
Unsecured Term Loan Swaps
Notional amount liabilities	$ 75,000
Derivative Liability, Fair Value, Gross Liability	$ (71)
Fixed Interest Rate (as a percent)	0.28%
Interest Rate Derivative, The Toronto-Dominion Bank, July 26, 2019 [Member]
Unsecured Term Loan Swaps
Notional amount liabilities	$ 50,000
Derivative Liability, Fair Value, Gross Liability	$ (3,243)
Fixed Interest Rate (as a percent)	2.918%
Interest Rate Derivative, PNC Bank, July 26, 2019 [Member]
Unsecured Term Loan Swaps
Notional amount liabilities	$ 50,000
Derivative Liability, Fair Value, Gross Liability	$ (3,243)
Fixed Interest Rate (as a percent)	2.919%
Interest Rate Derivative, Bank of Montreal, July 26, 2019 [Member]
Unsecured Term Loan Swaps
Notional amount liabilities	$ 50,000
Derivative Liability, Fair Value, Gross Liability	$ (3,243)
Fixed Interest Rate (as a percent)	2.919%
Interest Rate Derivative, US Bank, July 26, 2019 [Member]
Unsecured Term Loan Swaps
Notional amount liabilities	$ 25,000
Derivative Liability, Fair Value, Gross Liability	$ (1,622)
Fixed Interest Rate (as a percent)	2.919%
Interest Rate Derivative, Wells Fargo Bank, July 15, 2020 [Member]
Unsecured Term Loan Swaps
Notional amount liabilities	$ 50,000
Derivative Liability, Fair Value, Gross Liability	$ (2,932)
Fixed Interest Rate (as a percent)	2.246%
Interest Rate Derivative, US Bank, July 15, 2020 [Member]
Unsecured Term Loan Swaps
Notional amount liabilities	$ 50,000
Derivative Liability, Fair Value, Gross Liability	$ (2,932)
Fixed Interest Rate (as a percent)	2.2459%
Interest Rate Derivative, Regions Bank, July 15, 2020 [Member]
Unsecured Term Loan Swaps
Notional amount liabilities	$ 50,000
Derivative Liability, Fair Value, Gross Liability	$ (2,930)
Fixed Interest Rate (as a percent)	2.2459%
Interest Rate Derivative, Bank of Montreal, July 15, 2020
Unsecured Term Loan Swaps
Notional amount liabilities	$ 50,000
Derivative Liability, Fair Value, Gross Liability	$ (1,990)
Fixed Interest Rate (as a percent)	1.7165%
Interest Rate Derivative, US Bank N.A, April 18, 2023
Unsecured Term Loan Swaps
Notional amount assets	$ 150,000
Derivative Asset, Fair Value, Gross Asset	$ 848
Fixed Interest Rate (as a percent)	0.9385%
Interest Rate Derivative, Wells Fargo Bank, April 18, 2021
Unsecured Term Loan Swaps
Notional amount assets	$ 75,000
Derivative Asset, Fair Value, Gross Asset	$ 428
Fixed Interest Rate (as a percent)	0.9365%
Interest Rate Derivative, The Toronto-Dominion Bank, April 18, 2023
Unsecured Term Loan Swaps
Notional amount assets	$ 75,000
Derivative Asset, Fair Value, Gross Asset	$ 428
Fixed Interest Rate (as a percent)	0.936%

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Derivative Financial Instruments - FV of Interest Rate Swaps (Details) - Interest Rate Swaps - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Fair value of the interest rate swaps outstanding
Notional amount assets	$ 300,000	$ 0
Fair value - assets	1,704	0
Notional amount liabilities	975,000	1,125,000
Fair Value - liabilities	$ (28,795)	$ (40,656)

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Derivative Financial Instruments - Cash Flow Hedges and Contingent Features (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Cash Flow Hedges of Interest Rate Risk
Total interest expense presented in the Consolidated Statements of Operations in which the effects of cash flow hedges are recorded	$ 15,273,000	$ 15,333,000	$ 30,631,000	$ 30,197,000
Interest Rate Swaps
Cash Flow Hedges of Interest Rate Risk
Additional amount reclassified from accumulated other comprehensive income (loss) as a increase (decrease) to interest expense over the next twelve months	14,600,000		14,600,000
Income (loss) recognized in accumulated other comprehensive loss on interest rate swaps	(2,501,000)	(5,249,000)	(5,249,000)	36,336,000
Loss reclassified from accumulated other comprehensive loss into income as interest expense	3,933,000	3,240,000	(8,333,000)	(4,136,000)
Total interest expense presented in the Consolidated Statements of Operations in which the effects of cash flow hedges are recorded	15,273,000	$ 15,333,000	30,631,000	$ 30,197,000
Assets Needed for Immediate Settlement, Aggregate Fair Value	$ 27,800,000		$ 27,800,000

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Derivative Financial Instruments - FV on Recurring Basis (Details) - Interest Rate Swaps - Fair value on recurring basis - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Assets (liabilities):
Interest rate swaps-Asset	$ 1,704	$ 0
Interest rate swaps-Liability	(28,795)	(40,656)
Level 1
Assets (liabilities):
Interest rate swaps-Asset	0	0
Interest rate swaps-Liability	0	0
Level 2
Assets (liabilities):
Interest rate swaps-Asset	1,704	0
Interest rate swaps-Liability	(28,795)	(40,656)
Level 3
Assets (liabilities):
Interest rate swaps-Asset	0	0
Interest rate swaps-Liability	$ 0	$ 0

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Equity - Preferred Stock (Details) - USD ($) $ / shares in Units, $ in Thousands			3 Months Ended						6 Months Ended		12 Months Ended
	Mar. 31, 2021	Mar. 01, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020
Class of Stock [Line Items]
Less: redemption of preferred stock			$ 0				$ 0		$ 2,582	$ 0
Preferred Stock, Shares Issued			0						0
Series C Preferred Stock
Class of Stock [Line Items]
Stock Redeemed or Called During Period, Shares		3,000,000
Dividend rate (as a percent)									6.875%
Preferred Stock, Redemption Price Per Share			$ 25.00						$ 25.00
Less: redemption of preferred stock	$ 2,600
Preferred Stock, Shares Issued			0		3,000,000				0		3,000,000
Preferred Stock, Dividends Per Share, Declared				$ 0.4296875	$ 0.4296875	$ 0.4296875	$ 0.4296875	$ 0.4296875	$ 0.4296875		$ 1.7187500
Dividends Payable, Date Declared				Jan. 11, 2021	Oct. 09, 2020	Jul. 09, 2020	Apr. 09, 2020	Jan. 08, 2020
Dividends Payable, Date to be Paid				Mar. 31, 2021	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020

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Equity - Common Stock ATM (Details) - At The Market Program 2019 $600 Million - USD ($) $ / shares in Units, $ in Thousands		1 Months Ended	6 Months Ended	12 Months Ended
	Apr. 05, 2021	Jul. 27, 2021	Jun. 30, 2021	Dec. 31, 2020
Class of Stock [Line Items]
Common Stock Value Authorized under Stock Offering Program			$ 600,000
Common Stock
Class of Stock [Line Items]
Aggregate value of common stock available to be sold under the ATM			$ 204,023
Number of shares sold			1,888,290	0
Net proceeds from the sale of common stock			$ 63,583
Forward Contract Indexed to Issuer's Equity, Indexed Shares	1,446,760
Forward Contract Indexed to Issuer's Equity, Forward Rate Per Share	$ 34.56
Forward Contract Indexed to Issuer's Equity, Settlement Alternatives, Cash, at Fair Value	$ 50,000
Forward Contract Indexed to Issuer's Equity, Forward Rate Per Share, Net	$ 34.2144
Common Stock | Subsequent Event [Member]
Class of Stock [Line Items]
Number of shares sold		1,719,849
Shares Issued, Price Per Share		$ 37.98
Sale of Stock, Price Per Share		$ 37.67
Sale of Stock, Gross Consideration Received on Transaction		$ 65,300
Weighted Average | Common Stock
Class of Stock [Line Items]
Sale of Stock, Price Per Share			$ 34.01

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Equity - Common Stock Dividends (Details) - $ / shares		1 Months Ended																		6 Months Ended	12 Months Ended
	Jul. 13, 2021	Jun. 30, 2021	May 31, 2021	Apr. 30, 2021	Mar. 31, 2021	Feb. 28, 2021	Jan. 31, 2021	Dec. 31, 2020	Nov. 30, 2020	Oct. 31, 2020	Sep. 30, 2020	Aug. 31, 2020	Jul. 31, 2020	Jun. 30, 2020	May 31, 2020	Apr. 30, 2020	Mar. 31, 2020	Feb. 29, 2020	Jan. 31, 2020	Jun. 30, 2021	Dec. 31, 2020
Class of Stock [Line Items]
Common Stock, Dividends, Per Share, Declared		$ 0.120833	$ 0.120833	$ 0.120833	$ 0.120833	$ 0.120833	$ 0.120833	$ 0.12	$ 0.12	$ 0.12	$ 0.12	$ 0.12	$ 0.12	$ 0.12	$ 0.12	$ 0.12	$ 0.12	$ 0.12	$ 0.12	$ 0.724998	$ 1.44
Subsequent Event [Member]
Class of Stock [Line Items]
Common Stock, Dividends, Per Share, Declared	$ 0.120833
Common Stock
Class of Stock [Line Items]
Dividends Payable, Date Declared		Apr. 12, 2021	Apr. 12, 2021	Apr. 12, 2021	Jan. 11, 2021	Jan. 11, 2021	Jan. 11, 2021	Oct. 09, 2020	Oct. 09, 2020	Oct. 09, 2020	Jul. 09, 2020	Jul. 09, 2020	Jul. 09, 2020	Apr. 09, 2020	Apr. 09, 2020	Apr. 09, 2020	Jan. 08, 2020	Jan. 08, 2020	Jan. 08, 2020
Dividends Payable, Date to be Paid		Jul. 15, 2021	Jun. 15, 2021	May 17, 2021	Apr. 15, 2021	Mar. 15, 2021	Feb. 16, 2021	Jan. 15, 2021	Dec. 15, 2020	Nov. 16, 2020	Oct. 15, 2020	Sep. 15, 2020	Aug. 17, 2020	Jul. 15, 2020	Jun. 15, 2020	May 15, 2020	Apr. 15, 2020	Mar. 16, 2020	Feb. 18, 2020

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Equity - Restricted Stock (Details) - Restricted stock - USD ($) $ / shares in Units, $ in Thousands				3 Months Ended			6 Months Ended		12 Months Ended
	Jan. 07, 2021	Feb. 13, 2020	Jan. 08, 2020	Jun. 30, 2021	Mar. 31, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020	Dec. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period (in years)	4 years
Shares
Unvested at beginning of period (in shares)					184,890		184,890	193,045	193,045
Granted (in shares)					75,419		90,304
Vested (in shares)				0	(81,408)	0	(72,788)	(78,010)
Forfeited (in shares)					(2,166)		(521)
Unvested at end of period (in shares)				201,885			201,885		184,890
Fair value of restricted stock per share at grant date	$ 29.77	$ 32.64	$ 31.49				$ 29.77		$ 31.60
Stock Repurchased and Retired During Period, Shares					34,117		25,840
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value				$ 28.96			$ 28.96		27.70	$ 24.38
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value							$ 26.76		23.46
Unrecognized compensation costs				$ 4,400			$ 4,400
Unrecognized compensation costs, period for recognition							2 years 7 months 6 days
Vested (in shares)				0	(81,408)	0	(72,788)	(78,010)
Fair value of shares vested				$ 0		$ 0	$ 2,280	$ 2,463
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value							$ 28.06		$ 26.92

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Noncontrolling Interest - Summary (Details) - shares		3 Months Ended	6 Months Ended
	Jan. 07, 2021	Mar. 31, 2021	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020	Dec. 31, 2019
Limited Partner
Noncontrolling interest
Noncontrolling interest ownership percentage			2.20%		2.00%	2.50%
LTIP Units | Share-based Compensation Award, Tranche One [Member]
Noncontrolling interest
Vesting period (in years)	4 years
LTIP Units | Independent Director | Share-based Compensation Award, Tranche One [Member]
Noncontrolling interest
Vesting period (in years)	1 year
Noncontrolling Interest - Unit holders in Operating Partnership
Noncontrolling interest
Units outstanding, balance at beginning of period (in units)		3,285,238	3,285,238	3,736,852
Granted/Issued		278,806	405,844
Forfeited		0	0
Conversions from LTIP units to Other Common Units		0	0
Redemptions from Other Common Units to common stock		730,420	119,334
Units outstanding, balance at end of period (in units)			3,571,748
LTIP Units | Noncontrolling Interest - Unit holders in Operating Partnership
Noncontrolling interest
Units outstanding, balance at beginning of period (in units)		1,692,423	1,692,423	1,697,358
Granted/Issued		278,806	405,844
Forfeited		0	0
Conversions from LTIP units to Other Common Units		283,741	97,159
Redemptions from Other Common Units to common stock		0	0
Units outstanding, balance at end of period (in units)			2,001,108
Other Common Units | Noncontrolling Interest - Unit holders in Operating Partnership
Noncontrolling interest
Units outstanding, balance at beginning of period (in units)		1,592,815	1,592,815	2,039,494
Granted/Issued		0	0
Forfeited		0	0
Conversions from LTIP units to Other Common Units		283,741	97,159
Redemptions from Other Common Units to common stock		730,420	119,334
Units outstanding, balance at end of period (in units)			1,570,640

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Noncontrolling Interest - LTIP FV Assumptions (Details) - LTIP Units - USD ($)		3 Months Ended	6 Months Ended	12 Months Ended
	Jan. 07, 2021	Mar. 31, 2021	Jun. 30, 2021	Dec. 31, 2020
Assumptions
Expected term (years)	10 years
Expected volatility	34.00%
Expected dividend yield	5.00%
Risk-free interest rate	0.229%
Fair value of LTIP units at issuance (in thousands)	$ 4,316,000
Granted (in shares)	153,430	278,806	405,844
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value	$ 28.13		$ 28.13	$ 29.47
Share-based Compensation Award, Tranche One [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period (in years)	4 years
Independent Director | Share-based Compensation Award, Tranche One [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period (in years)	1 year

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Noncontrolling Interest - LTIP Units (Details) - USD ($) $ / shares in Units, $ in Thousands				3 Months Ended			6 Months Ended		12 Months Ended
	Jan. 07, 2021	Feb. 13, 2020	Jan. 08, 2020	Jun. 30, 2021	Mar. 31, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020	Dec. 31, 2019
LTIP Units
Units
Unvested at beginning of period (in shares)					211,448		211,448	227,348	227,348
Granted	153,430				278,806		405,844
Vested (in units)				(45,335)	(294,706)	(43,958)	(228,821)	(174,145)
Forfeited (in units)					0		0
Unvested at end of period (in shares)				388,471			388,471		211,448
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value				$ 27.74			$ 27.74		$ 26.54	$ 23.37
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value	$ 28.13						28.13		29.47
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value							$ 27.33		26.87
Unrecognized compensation costs				$ 4,100			$ 4,100
Unrecognized compensation costs, period for recognition							2 years 3 months 18 days
Vested (in units)				45,335	294,706	43,958	228,821	174,145
Fair value of units vested				$ 1,686		$ 1,213	$ 7,369	$ 5,074
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value							$ 0		$ 0
Restricted stock
Units
Unvested at beginning of period (in shares)					184,890		184,890	193,045	193,045
Granted					75,419		90,304
Vested (in units)				0	(81,408)	0	(72,788)	(78,010)
Forfeited (in units)					(2,166)		(521)
Unvested at end of period (in shares)				201,885			201,885		184,890
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value				$ 28.96			$ 28.96		$ 27.70	$ 24.38
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value	$ 29.77	$ 32.64	$ 31.49				29.77		31.60
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value							$ 26.76		23.46
Unrecognized compensation costs				$ 4,400			$ 4,400
Unrecognized compensation costs, period for recognition							2 years 7 months 6 days
Vested (in units)				0	81,408	0	72,788	78,010
Fair value of units vested				$ 0		$ 0	$ 2,280	$ 2,463
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value							$ 28.06		$ 26.92

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Equity Incentive Plan - Performance Plan Assumptions (Details) - Performance shares $ in Thousands	Jan. 07, 2021 USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected volatility	34.40%
Expected dividend yield	5.00%
Risk-free interest rate	0.2271%
Fair value of performance units grant (in thousands)	$ 5,522

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Equity Incentive Plan - 2021 Activity (Details) - USD ($) $ in Millions		3 Months Ended	6 Months Ended
	Jan. 07, 2021	Mar. 31, 2021	Jun. 30, 2021
LTIP Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted	153,430	278,806	405,844
Unrecognized compensation costs			$ 4.1
Unrecognized compensation costs, period for recognition			2 years 3 months 18 days
Restricted stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period (in years)	4 years
Stock Repurchased and Retired During Period, Shares		34,117	25,840
Granted		75,419	90,304
Unrecognized compensation costs			$ 4.4
Unrecognized compensation costs, period for recognition			2 years 7 months 6 days
Performance shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation costs			$ 8.5
Unrecognized compensation costs, period for recognition			1 year 10 months 24 days
Performance Units Granted in 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period (in years)	1 year
Performance Units Granted in 2018 | LTIP Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Issuance of vested LTIP units and shares	127,671
Stock Repurchased and Retired During Period, Shares	17,731
Granted	124,743
Performance Units Granted in 2018 | Common Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Issuance of vested LTIP units and shares	44,591
Performance Units Granted in 2018 | Restricted stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted	6,352

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Equity Incentive Plan - Equity Non-cash Compensation Expense (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
General and Administrative Expenses
Equity Incentive Plan
Share-based compensation	$ 4,539	$ 2,938	$ 9,154	$ 5,790
Restricted stock | General and Administrative Expenses
Equity Incentive Plan
Share-based compensation	586	481	1,237	948
LTIP Units | General and Administrative Expenses
Equity Incentive Plan
Share-based compensation	2,346	978	4,754	1,942
Performance shares | General and Administrative Expenses
Equity Incentive Plan
Share-based compensation	1,484	1,341	2,922	2,648
Independent Director | General and Administrative Expenses
Equity Incentive Plan
Share-based compensation	$ 123	$ 138	$ 241	$ 252
Common Stock | Independent Director
Equity Incentive Plan
Number of days of average trailing stock price used to calculate number of shares of common stock granted	10 days	10 days	10 days	10 days

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Leases - Rental Income (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Leases [Abstract]
Fixed lease payments	$ 103,778	$ 91,234	$ 204,957	$ 181,630
Variable lease payments	29,639	25,588	58,883	50,594
Straight-line rental income	4,718	1,823	9,600	5,750
Net decrease to rental income related to above and below market lease amortization	(330)	(1,174)	(1,810)	(2,164)
Rental income	$ 137,805	$ 117,471	$ 271,630	$ 235,810

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Leases - Tenant Accounts Receivable (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020
Accounts, Notes, Loans and Financing Receivable [Line Items]
Contractual Rent Adjustment To Rental Income Resulting From Lease Collectibility Assessment	$ 0.3	$ 0.6	$ 1.7	$ 0.6
Contractual Rent Adjustment To Rental Income	(0.1)		(1.3)
Accrued Rent Adjustment To Rental Income Resulting From Lease Collectibility Assessment	0.0	1.2	(0.1)	0.9
Lease Security Deposits Available in Letters of Credit	29.8		29.8		$ 30.1
Lease security deposits in restricted cash	0.7		0.7		0.7
Lease security deposits included in tenant prepaid rent and security deposits on the Balance Sheet	11.6		11.6		11.0
Real Estate Taxes, Tenant Responsibility	5.3	$ 4.9	10.4	$ 9.7
Accrued Income Receivable [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Deferred Rent Receivables, Net	$ 68.7		$ 68.7		$ 60.0

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Leases - Maturity of Fixed Lease Payments (Details) $ in Thousands	Jun. 30, 2021 USD ($)
Leases [Abstract]
2021	$ 208,202
2022	396,672
2022	355,331
2023	304,926
2024	251,700
Thereafter	$ 942,803

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Leases - Lessee Leases (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020
Lessee, Lease, Description [Line Items]
Operating Lease, Weighted Average Remaining Lease Term	29 years 7 months 6 days		29 years 7 months 6 days		29 years 10 months 24 days
Operating Lease, Weighted Average Discount Rate, Percent	6.80%		6.80%		6.80%
Lease, Cost	$ 846	$ 754	$ 1,692	$ 1,403
Operating Lease, Payments			952	1,143
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability			$ 0	7,718
Minimum [Member]
Lessee, Lease, Description [Line Items]
Lessee, Operating Lease, Term of Contract	5 years		5 years
Lessee, Operating Lease, Renewal Term	10 years		10 years
Maximum [Member]
Lessee, Lease, Description [Line Items]
Lessee, Operating Lease, Term of Contract	48 years 4 months 24 days		48 years 4 months 24 days
Lessee, Operating Lease, Renewal Term	20 years		20 years
Operating Expense [Member]
Lessee, Lease, Description [Line Items]
Lease, Cost	$ 417	331	$ 834	662
General and Administrative Expenses
Lessee, Lease, Description [Line Items]
Lease, Cost	$ 429	$ 423	$ 858	$ 741

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Leases - Maturity of Operating Lease Liabilities (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Leases [Abstract]
2021	$ 1,357
2022	3,188
2022	3,248
2023	3,291
2024	3,336
Thereafter	62,365
Lessee, Operating Lease, Liability, Payments, Due	76,785
Less: Imputed interest	(48,947)
Operating lease liabilities	$ 27,838	$ 27,898

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Earnings Per Share (Details) - shares	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Earnings Per Share [Abstract]
Participating securities	202,171	189,895	200,501	185,821

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Earnings Per Share - Reconciliation of Numerator and Denominator (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Numerator
Net income attributable to common stockholders	$ 32,576	$ 17,552	$ 53,507	$ 79,635
Denominator
Weighted average common shares outstanding — basic	159,736	148,663	159,086	148,116
Shares issuable under forward sales agreements	1,047	0	696	0
Weighted average common shares outstanding — diluted	161,367	149,027	160,249	148,341
Net income per share — basic and diluted
Net income per share attributable to common stockholders — basic	$ 0.20	$ 0.12	$ 0.34	$ 0.54
Net income per share attributable to common stockholders — diluted	$ 0.20	$ 0.12	$ 0.33	$ 0.54
Restricted stock
Net income per share — basic and diluted
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	202	190	201	186
Stock Compensation Plan
Denominator
Share-based compensation	584	364	467	225

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Commitments and Contingencies - Agreements (Details) $ in Millions	Jun. 30, 2021 USD ($)
Commitments and Contingencies Disclosure [Abstract]
Letters of credit outstanding	$ 2.9

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Subsequent Events - Debt (Details) - USD ($) $ in Thousands	Jul. 08, 2021	Jun. 30, 2021	Dec. 31, 2020
Debt Instrument [Line Items]
Long-term debt, gross		$ 1,890,114	$ 1,709,102
Unsecured Notes
Debt Instrument [Line Items]
Long-term debt, gross		$ 575,000	$ 575,000
$275 Million Series Unsecured Notes | Unsecured Notes | Subsequent Event [Member]
Debt Instrument [Line Items]
Long-term debt, gross	$ 275,000
Stated interest rate	2.80%
$50 Million Unsecured Notes | Unsecured Notes | Subsequent Event [Member]
Debt Instrument [Line Items]
Long-term debt, gross	$ 50,000
Stated interest rate	2.95%