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 September 30, 2020 

or

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

For the transition period from ______ to ______

Commission File Number: 001-12762 (Mid-America Apartment Communities, Inc.)

Commission File Number: 333-190028-01 (Mid-America Apartments, L.P.)

MID-AMERICA APARTMENT COMMUNITIES, INC.

MID-AMERICA APARTMENTS, L.P.

(Exact name of registrant as specified in its charter)

Tennessee (Mid-America Apartment Communities, Inc.)	62-1543819
Tennessee (Mid-America Apartments, L.P.)	62-1543816
(State or other jurisdiction of incorporation or organization)	(I.R.S. Employer Identification No.)

6815 Poplar Ave., Suite 500, Germantown, TN  38138

(Address of principal executive offices) (Zip Code)

(901) 682-6600

(Registrant’s telephone number, including area code)

N/A

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

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

Title of each class	Trading Symbol(s)	Name of each exchange on which registered
Common Stock, par value $.01 per share (Mid-America Apartment Communities, Inc.)	MAA	New York Stock Exchange
8.50% Series I Cumulative Redeemable Preferred Stock, $.01 par value per share (Mid-America Apartment Communities, Inc.)	MAA*I	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.

Mid-America Apartment Communities, Inc.	YES ☒	NO ☐
Mid-America Apartments, L.P.	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).

Mid-America Apartment Communities, Inc.	YES ☒	NO ☐
Mid-America Apartments, L.P.	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.

Mid-America Apartment Communities, Inc.
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. ☐

Mid-America Apartments, L.P.
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).

Mid-America Apartment Communities, Inc.	YES ☐	NO ☒
Mid-America Apartments, L.P.	YES ☐	NO ☒

Indicate the number of shares outstanding of each of the issuer’s classes of common stock, as of the latest practicable date:

Mid-America Apartment Communities, Inc.	Number of Shares Outstanding at
Class	October 26, 2020
Common Stock, $0.01 par value	114,369,812

MID-AMERICA APARTMENT COMMUNITIES, INC.

MID-AMERICA APARTMENTS, L.P.

TABLE OF CONTENTS

			Page
PART I – FINANCIAL INFORMATION
Item 1.	Financial Statements.		4
	Mid-America Apartment Communities, Inc.
		Condensed Consolidated Balance Sheets as of September 30, 2020 and December 31, 2019.	4
		Condensed Consolidated Statements of Operations for the three and nine months ended September 30, 2020 and 2019.	5
		Condensed Consolidated Statements of Comprehensive Income for the three and nine months ended September 30, 2020 and 2019.	6
		Condensed Consolidated Statements of Cash Flows for the nine months ended September 30, 2020 and 2019.	7
	Mid-America Apartments, L.P.
		Condensed Consolidated Balance Sheets as of September 30, 2020 and December 31, 2019.	8
		Condensed Consolidated Statements of Operations for the three and nine months ended September 30, 2020 and 2019.	9
		Condensed Consolidated Statements of Comprehensive Income for the three and nine months ended September 30, 2020 and 2019.	10
		Condensed Consolidated Statements of Cash Flows for the nine months ended September 30, 2020 and 2019.	11
		Notes to Condensed Consolidated Financial Statements.	12
Item 2.	Management’s Discussion and Analysis of Financial Condition and Results of Operations.		28
Item 3.	Quantitative and Qualitative Disclosures About Market Risk.		38
Item 4.	Controls and Procedures.		38
PART II – OTHER INFORMATION
Item 1.	Legal Proceedings.		39
Item 1A.	Risk Factors.		40
Item 2.	Unregistered Sales of Equity Securities and Use of Proceeds.		41
Item 3.	Defaults Upon Senior Securities.		41
Item 4.	Mine Safety Disclosures.		41
Item 5.	Other Information.		41
Item 6.	Exhibits.		42
	Signatures.		43

1

Explanatory Note

This report combines the Quarterly Reports on Form 10-Q for the quarter ended September 30, 2020 of Mid-America Apartment Communities, Inc., a Tennessee corporation, and Mid-America Apartments, L.P., a Tennessee limited partnership, of which Mid-America Apartment Communities, Inc. is the sole general partner.  Mid-America Apartment Communities, Inc. and its 96.6% owned subsidiary, Mid-America Apartments, L.P., are both required to file quarterly reports under the Securities Exchange Act of 1934, as amended.

Unless the context otherwise requires, all references in this Quarterly Report on Form 10-Q to “MAA” refer only to Mid-America Apartment Communities, Inc., and not any of its consolidated subsidiaries. Unless the context otherwise requires, all references in this report to “we,” “us,” “our,” or the “Company” refer collectively to Mid-America Apartment Communities, Inc., together with its consolidated subsidiaries, including Mid-America Apartments, L.P.  Unless the context otherwise requires, all references in this report to the “Operating Partnership” or “MAALP” refer to Mid-America Apartments, L.P., together with its consolidated subsidiaries. “Common stock” refers to the common stock of MAA, “preferred stock” refers to the preferred stock of MAA, and “shareholders” refers to the holders of shares of MAA’s common stock or preferred stock, as applicable. The common units of limited partnership interest in the Operating Partnership are referred to as “OP Units” and the holders of the OP Units are referred to as “common unitholders”.

As of September 30, 2020, MAA owned 114,369,812 OP Units (96.6% of the total number of OP Units).  MAA conducts substantially all of its business and holds substantially all of its assets, directly or indirectly, through the Operating Partnership, and by virtue of its ownership of the OP Units and being the Operating Partnership’s sole general partner, MAA has the ability to control all of the day-to-day operations of the Operating Partnership.

We believe combining the periodic reports of MAA and the Operating Partnership, including the notes to the condensed consolidated financial statements, into this report results in the following benefits:

• enhances investors’ understanding of MAA and the Operating Partnership by enabling investors to view the business as a whole in the same manner that management views and operates the business;

• eliminates duplicative disclosure and provides a more streamlined and readable presentation since a substantial portion of the disclosure in this report applies to both MAA and the Operating Partnership; and

• creates time and cost efficiencies through the preparation of one combined report instead of two separate reports.

MAA, an S&P 500 company, is a multifamily-focused, self-administered and self-managed real estate investment trust, or REIT.  Management operates MAA and the Operating Partnership as one business. We believe it is important to understand the few differences between MAA and the Operating Partnership in the context of how MAA and the Operating Partnership operate as a consolidated company. MAA and the Operating Partnership are structured as an umbrella partnership REIT, or UPREIT. MAA’s interest in the Operating Partnership entitles MAA to share in cash distributions from, and in the profits and losses of, the Operating Partnership in proportion to MAA’s percentage interest therein and entitles MAA to vote on substantially all matters requiring a vote of the partners. MAA’s only material asset is its ownership of limited partnership interests in the Operating Partnership (other than cash held by MAA from time to time); therefore, MAA’s primary function is acting as the sole general partner of the Operating Partnership, issuing public equity from time to time and guaranteeing certain debt of the Operating Partnership. The Operating Partnership holds, directly or indirectly, all of the real estate assets. Except for net proceeds from public equity issuances by MAA, which are contributed to the Operating Partnership in exchange for limited partnership interests, the Operating Partnership generates the capital required by the Company’s business through the Operating Partnership’s operations, direct or indirect incurrence of indebtedness and issuance of OP Units.

The presentation of MAA’s shareholders’ equity and the Operating Partnership’s capital are the principal areas of difference between the consolidated financial statements of MAA and those of the Operating Partnership.  MAA’s shareholders’ equity may include shares of preferred stock, shares of common stock, additional paid-in capital, cumulative earnings, cumulative distributions, noncontrolling interest, treasury shares, accumulated other comprehensive income and redeemable common stock.  The Operating Partnership’s capital may include common capital and preferred capital of the general partner (MAA), limited partners’ common capital and preferred capital, noncontrolling interest, accumulated other comprehensive income and redeemable common units.  Holders of OP Units (other than MAA) may require the Operating Partnership to redeem their OP Units from time to time, in which case the Operating Partnership may, at its option, pay the redemption price either in cash (in an amount per OP Unit equal, in general, to the average closing price of MAA’s common stock on the New York Stock Exchange, or NYSE, over a specified period prior to the redemption date) or by delivering one share of MAA’s common stock (subject to adjustment under specified circumstances) for each OP Unit so redeemed.

2

In order to highlight the material differences between MAA and the Operating Partnership, this Quarterly Report on Form 10-Q includes sections that separately present and discuss areas that are materially different between MAA and the Operating Partnership, including:

• the condensed consolidated financial statements in Part 1, Item 1 of this report;

• certain accompanying notes to the condensed consolidated financial statements, including Note 2 - Earnings per Common Share of MAA and Note 3 - Earnings per OP Unit of MAALP; Note 4 - MAA Equity and Note 5 - MAALP Capital; and Note 8 - Shareholders’ Equity of MAA and Note 9 - Partners’ Capital of MAALP;

• the controls and procedures in Part 1, Item 4 of this report; and

• the certifications included as Exhibits 31 and 32 to this report.

In the sections that combine disclosures for MAA and the Operating Partnership, this report refers to actions or holdings as being actions or holdings of the Company.  Although the Operating Partnership (directly or indirectly through one of its subsidiaries) is generally the entity that enters into contracts, holds assets and issues debt, management believes this presentation is appropriate for the reasons set forth above and because we operate the business through the Operating Partnership.  MAA, the Operating Partnership and its subsidiaries operate as one consolidated business, but MAA, the Operating Partnership and each of its subsidiaries are separate, distinct legal entities.

3

PART I – FINANCIAL INFORMATION

Item 1. Financial Statements.

Mid-America Apartment Communities, Inc.

Condensed Consolidated Balance Sheets

(Unaudited)

(Dollars in thousands, except share and per share data)

	September 30, 2020			December 31, 2019
Assets
Real estate assets:
Land	$	1,909,343		$	1,905,757
Buildings and improvements and other		12,037,042			11,841,978
Development and capital improvements in progress		220,685			116,424
		14,167,070			13,864,159
Less: Accumulated depreciation		(3,316,710	)		(2,955,253	)
		10,850,360			10,908,906
Undeveloped land		34,548			34,548
Investment in real estate joint venture		43,467			43,674
Real estate assets, net		10,928,375			10,987,128
Cash and cash equivalents		18,407			20,476
Restricted cash		9,182			50,065
Other assets		172,740			172,781
Total assets	$	11,128,704		$	11,230,450
Liabilities and equity
Liabilities:
Unsecured notes payable	$	3,939,425		$	3,828,201
Secured notes payable		486,169			626,397
Accrued expenses and other liabilities		570,014			472,262
Total liabilities		4,995,608			4,926,860
Redeemable common stock		13,841			14,131
Shareholders’ equity:
Preferred stock, $0.01 par value per share, 20,000,000 shares authorized;    8.50% Series I Cumulative Redeemable Shares, liquidation preference $50.00    per share, 867,846 shares issued and outstanding as of September 30, 2020    and December 31, 2019, respectively.		9			9
Common stock, $0.01 par value per share, 145,000,000 shares authorized;    114,369,812 and 114,246,393 shares issued and outstanding as of    September 30, 2020 and December 31, 2019, respectively (1)		1,140			1,140
Additional paid-in capital		7,173,391			7,166,073
Accumulated distributions in excess of net income		(1,258,072	)		(1,085,479	)
Accumulated other comprehensive loss		(12,396	)		(13,178	)
Total MAA shareholders’ equity		5,904,072			6,068,565
Noncontrolling interests - Operating Partnership units		208,072			214,647
Total Company’s shareholders’ equity		6,112,144			6,283,212
Noncontrolling interests - consolidated real estate entities		7,111			6,247
Total equity		6,119,255			6,289,459
Total liabilities and equity	$	11,128,704		$	11,230,450

⁽¹⁾ Number of shares issued and outstanding represent total shares of common stock regardless of classification on the Condensed Consolidated Balance Sheets. The number of shares classified as redeemable common stock on the Condensed Consolidated Balance Sheets as of September 30, 2020 and December 31, 2019 are 119,374 and 107,162, respectively.

See accompanying notes to condensed consolidated financial statements.

4

Mid-America Apartment Communities, Inc.

Condensed Consolidated Statements of Operations

(Unaudited)

(Dollars in thousands, except per share data)

	Three months ended September 30,						Nine months ended September 30,
	2020			2019			2020			2019
Revenues:
Rental and other property revenues	$	423,199		$	415,632		$	1,254,323		$	1,224,200
Expenses:
Operating expenses, excluding real estate taxes and insurance		105,108			100,319			292,031			286,284
Real estate taxes and insurance		64,706			59,220			188,426			176,774
Depreciation and amortization		127,679			124,684			381,257			371,417
Total property operating expenses		297,493			284,223			861,714			834,475
Property management expenses		12,691			13,899			39,064			41,195
General and administrative expenses		11,360			10,225			35,181			32,960
Interest expense		41,010			44,513			126,610			136,149
(Gain) loss on sale of depreciable real estate assets		(20	)		(1,000	)		7			(987	)
Gain on sale of non-depreciable real estate assets		(1,366	)		—			(995	)		(9,260	)
Other non-operating (income) expense		(242	)		(18,800	)		13,647			(23,494	)
Income before income tax expense		62,273			82,572			179,095			213,162
Income tax expense		(665	)		(1,491	)		(2,532	)		(2,814	)
Income from continuing operations before real estate joint venture    activity		61,608			81,081			176,563			210,348
Income from real estate joint venture		428			378			1,153			1,210
Net income		62,036			81,459			177,716			211,558
Net income attributable to noncontrolling interests		2,126			2,814			6,096			7,336
Net income available for shareholders		59,910			78,645			171,620			204,222
Dividends to MAA Series I preferred shareholders		922			922			2,766			2,766
Net income available for MAA common shareholders	$	58,988		$	77,723		$	168,854		$	201,456
Earnings per common share - basic:
Net income available for MAA common shareholders	$	0.52		$	0.68		$	1.48		$	1.77
Earnings per common share - diluted:
Net income available for MAA common shareholders	$	0.52		$	0.68		$	1.47		$	1.77

See accompanying notes to condensed consolidated financial statements.

5

Mid-America Apartment Communities, Inc.

Condensed Consolidated Statements of Comprehensive Income

(Unaudited)

(Dollars in thousands)

	Three months ended September 30,						Nine months ended September 30,
	2020			2019			2020			2019
Net income	$	62,036		$	81,459		$	177,716		$	211,558
Other comprehensive income (loss):
Unrealized loss from derivative instruments		—			(5,562	)		—			(13,444	)
Adjustment for net losses (gains) reclassified to net income    from derivative instruments		279			(411	)		810			(1,734	)
Total comprehensive income		62,315			75,486			178,526			196,380
Less: Comprehensive income attributable to noncontrolling    interests		(2,136	)		(2,619	)		(6,124	)		(6,816	)
Comprehensive income attributable to MAA	$	60,179		$	72,867		$	172,402		$	189,564

See accompanying notes to condensed consolidated financial statements.

6

Mid-America Apartment Communities, Inc.

Condensed Consolidated Statements of Cash Flows

(Unaudited)

(Dollars in thousands)

	Nine months ended September 30,
Cash flows from operating activities:	2020			2019
Net income	$	177,716		$	211,558
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization		381,938			372,210
Loss (gain) on sale of depreciable real estate assets		7			(987	)
Gain on sale of non-depreciable real estate assets		(995	)		(9,260	)
Loss (gain) on embedded derivative in preferred shares		14,603			(19,592	)
Stock compensation expense		12,532			11,550
Amortization of debt issuance costs, discounts and premiums		3,595			4,706
Net change in operating accounts and other operating activities		54,489			51,353
Net cash provided by operating activities		643,885			621,538
Cash flows from investing activities:
Purchases of real estate and other assets		(5,004	)		(22,860	)
Capital improvements, development and other		(288,183	)		(219,670	)
Distributions from real estate joint ventures		207			365
Contributions to affiliates		(3,450	)		(4,500	)
Proceeds from disposition of real estate assets		3,278			15,984
Net cash used in investing activities		(293,152	)		(230,681	)
Cash flows from financing activities:
Proceeds from revolving credit facility		245,000			565,000
Repayments of revolving credit facility		(245,000	)		(1,105,000	)
Net (repayments of) proceeds from commercial paper		(35,000	)		200,000
Proceeds from notes payable		447,593			760,003
Principal payments on notes payable		(440,222	)		(468,635	)
Payment of deferred financing costs		(4,196	)		(11,530	)
Distributions to noncontrolling interests		(11,993	)		(11,813	)
Dividends paid on common shares		(342,983	)		(328,239	)
Dividends paid on preferred shares		(2,766	)		(2,766	)
Net change in other financing activities		(4,118	)		3,132
Net cash used in financing activities		(393,685	)		(399,848	)
Net decrease in cash, cash equivalents and restricted cash		(42,952	)		(8,991	)
Cash, cash equivalents and restricted cash, beginning of period		70,541			51,673
Cash, cash equivalents and restricted cash, end of period	$	27,589		$	42,682

The following table provides a reconciliation of cash, cash equivalents and restricted cash to amounts reported within the Condensed Consolidated Balance Sheets:

Reconciliation of cash, cash equivalents and restricted cash:
Cash and cash equivalents	$	18,407	$	25,826
Restricted cash		9,182		16,856
Total cash, cash equivalents and restricted cash	$	27,589	$	42,682
Supplemental disclosure of cash flow information:
Interest paid	$	109,527	$	108,249
Income taxes paid		2,534		2,509
Supplemental disclosure of noncash investing and financing activities:
Conversion of OP Units to shares of common stock	$	471	$	1,993
Accrued construction in progress		41,443		14,652
Interest capitalized		4,783		1,847

See accompanying notes to condensed consolidated financial statements.

7

Mid-America Apartments, L.P.

Condensed Consolidated Balance Sheets

(Unaudited)

(Dollars in thousands, except unit data)

	September 30, 2020			December 31, 2019
Assets
Real estate assets:
Land	$	1,909,343		$	1,905,757
Buildings and improvements and other		12,037,042			11,841,978
Development and capital improvements in progress		220,685			116,424
		14,167,070			13,864,159
Less: Accumulated depreciation		(3,316,710	)		(2,955,253	)
		10,850,360			10,908,906
Undeveloped land		34,548			34,548
Investment in real estate joint venture		43,467			43,674
Real estate assets, net		10,928,375			10,987,128
Cash and cash equivalents		18,407			20,476
Restricted cash		9,182			50,065
Other assets		172,740			172,781
Total assets	$	11,128,704		$	11,230,450
Liabilities and capital
Liabilities:
Unsecured notes payable	$	3,939,425		$	3,828,201
Secured notes payable		486,169			626,397
Accrued expenses and other liabilities		570,014			472,262
Due to general partner		19			19
Total liabilities		4,995,627			4,926,879
Redeemable common units		13,841			14,131
Operating Partnership capital:
Preferred units, 867,846 preferred units outstanding as of September 30, 2020    and December 31, 2019, respectively		66,840			66,840
General partner, 114,369,812 and 114,246,393 OP Units outstanding as of    September 30, 2020 and December 31, 2019, respectively (1)		5,849,987			6,015,290
Limited partners, 4,058,258 and 4,067,174 OP Units outstanding as of    September 30, 2020 and December 31, 2019, respectively (1)		208,072			214,647
Accumulated other comprehensive loss		(12,774	)		(13,584	)
Total operating partners’ capital		6,112,125			6,283,193
Noncontrolling interests - consolidated real estate entities		7,111			6,247
Total equity		6,119,236			6,289,440
Total liabilities and equity	$	11,128,704		$	11,230,450

⁽¹⁾ Number of units outstanding represents total OP Units regardless of classification on the Condensed Consolidated Balance Sheets. The number of units classified as redeemable common units on the Condensed Consolidated Balance Sheets as of September 30, 2020 and December 31, 2019 are 119,374 and 107,162, respectively.

See accompanying notes to condensed consolidated financial statements.

8

Mid-America Apartments, L.P.

Condensed Consolidated Statements of Operations

(Unaudited)

(Dollars in thousands, except per unit data)

	Three months ended September 30,						Nine months ended September 30,
	2020			2019			2020			2019
Revenues:
Rental and other property revenues	$	423,199		$	415,632		$	1,254,323		$	1,224,200
Expenses:
Operating expenses, excluding real estate taxes and insurance		105,108			100,319			292,031			286,284
Real estate taxes and insurance		64,706			59,220			188,426			176,774
Depreciation and amortization		127,679			124,684			381,257			371,417
Total property operating expenses		297,493			284,223			861,714			834,475
Property management expenses		12,691			13,899			39,064			41,195
General and administrative expenses		11,360			10,225			35,181			32,960
Interest expense		41,010			44,513			126,610			136,149
(Gain) loss on sale of depreciable real estate assets		(20	)		(1,000	)		7			(987	)
Gain on sale of non-depreciable real estate assets		(1,366	)		—			(995	)		(9,260	)
Other non-operating (income) expense		(242	)		(18,800	)		13,647			(23,494	)
Income before income tax expense		62,273			82,572			179,095			213,162
Income tax expense		(665	)		(1,491	)		(2,532	)		(2,814	)
Income from continuing operations before real estate joint venture    activity		61,608			81,081			176,563			210,348
Income from real estate joint venture		428			378			1,153			1,210
Net income		62,036			81,459			177,716			211,558
Distributions to MAALP preferred unitholders		922			922			2,766			2,766
Net income available for MAALP common unitholders	$	61,114		$	80,537		$	174,950		$	208,792
Earnings per common unit - basic:
Net income available for MAALP common unitholders	$	0.52		$	0.68		$	1.48		$	1.77
Earnings per common unit - diluted:
Net income available for MAALP common unitholders	$	0.52		$	0.68		$	1.48		$	1.77

See accompanying notes to condensed consolidated financial statements.

9

Mid-America Apartments, L.P.

Condensed Consolidated Statements of Comprehensive Income

(Unaudited)

(Dollars in thousands)

	Three months ended September 30,					Nine months ended September 30,
	2020		2019			2020		2019
Net income	$	62,036	$	81,459		$	177,716	$	211,558
Other comprehensive income (loss):
Unrealized loss from derivative instruments		—		(5,562	)		—		(13,444	)
Adjustment for net losses (gains) reclassified to net income    from derivative instruments		279		(411	)		810		(1,734	)
Comprehensive income attributable to MAALP	$	62,315	$	75,486		$	178,526	$	196,380

See accompanying notes to condensed consolidated financial statements.

10

Mid-America Apartments, L.P.

Condensed Consolidated Statements of Cash Flows

(Unaudited)

(Dollars in thousands)

	Nine months ended September 30,
Cash flows from operating activities:	2020			2019
Net income	$	177,716		$	211,558
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization		381,938			372,210
Loss (gain) on sale of depreciable real estate assets		7			(987	)
Gain on sale of non-depreciable real estate assets		(995	)		(9,260	)
Loss (gain) on embedded derivative in preferred shares		14,603			(19,592	)
Stock compensation expense		12,532			11,550
Amortization of debt issuance costs, discounts and premiums		3,595			4,706
Net change in operating accounts and other operating activities		54,489			51,353
Net cash provided by operating activities		643,885			621,538
Cash flows from investing activities:
Purchases of real estate and other assets		(5,004	)		(22,860	)
Capital improvements, development and other		(288,183	)		(219,670	)
Distributions from real estate joint ventures		207			365
Contributions to affiliates		(3,450	)		(4,500	)
Proceeds from disposition of real estate assets		3,278			15,984
Net cash used in investing activities		(293,152	)		(230,681	)
Cash flows from financing activities:
Proceeds from revolving credit facility		245,000			565,000
Repayments of revolving credit facility		(245,000	)		(1,105,000	)
Net (repayments of) proceeds from commercial paper		(35,000	)		200,000
Proceeds from notes payable		447,593			760,003
Principal payments on notes payable		(440,222	)		(468,635	)
Payment of deferred financing costs		(4,196	)		(11,530	)
Distributions paid on common units		(354,976	)		(340,052	)
Distributions paid on preferred units		(2,766	)		(2,766	)
Net change in other financing activities		(4,118	)		3,132
Net cash used in financing activities		(393,685	)		(399,848	)
Net decrease in cash, cash equivalents and restricted cash		(42,952	)		(8,991	)
Cash, cash equivalents and restricted cash, beginning of period		70,541			51,673
Cash, cash equivalents and restricted cash, end of period	$	27,589		$	42,682

The following table provides a reconciliation of cash, cash equivalents and restricted cash to amounts reported within the Condensed Consolidated Balance Sheets:

Reconciliation of cash, cash equivalents and restricted cash:
Cash and cash equivalents	$	18,407	$	25,826
Restricted cash		9,182		16,856
Total cash, cash equivalents and restricted cash	$	27,589	$	42,682
Supplemental disclosure of cash flow information:
Interest paid	$	109,527	$	108,249
Income taxes paid		2,534		2,509
Supplemental disclosure of noncash investing and financing activities:
Accrued construction in progress	$	41,443	$	14,652
Interest capitalized		4,783		1,847

See accompanying notes to condensed consolidated financial statements.

11

Mid-America Apartment Communities, Inc. and Mid-America Apartments, L.P.

Notes to Condensed Consolidated Financial Statements

(Unaudited)

1.Basis of Presentation and Principles of Consolidation and Significant Accounting Policies

Unless the context otherwise requires, all references to the “Company” refer collectively to Mid-America Apartment Communities, Inc., together with its consolidated subsidiaries, including Mid-America Apartments, L.P.  Unless the context otherwise requires, all references to “MAA” refer only to Mid-America Apartment Communities, Inc., and not any of its consolidated subsidiaries.  Unless the context otherwise requires, the references to the “Operating Partnership” or “MAALP” refer to Mid-America Apartments, L.P., together with its consolidated subsidiaries.  “Common stock” refers to the common stock of MAA and, unless the context otherwise requires, “shareholders” refers to the holders of shares of MAA’s common stock.  The common units of limited partnership interests in the Operating Partnership are referred to as “OP Units,” and the holders of the OP Units are referred to as “common unitholders”.

As of September 30, 2020, MAA owned 114,369,812 OP Units (or 96.6% of the total number of OP Units).  MAA conducts substantially all of its business and holds substantially all of its assets, directly or indirectly, through the Operating Partnership, and by virtue of its ownership of the OP Units and being the Operating Partnership’s sole general partner, MAA has the ability to control all of the day-to-day operations of the Operating Partnership.

Management believes combining the notes to the condensed consolidated financial statements of MAA and the Operating Partnership results in the following benefits:

• enhances a readers’ understanding of MAA and the Operating Partnership by enabling the reader to view the business as a whole in the same manner that management views and operates the business;

• eliminates duplicative disclosure and provides a more streamlined and readable presentation since a substantial portion of the disclosure applies to both MAA and the Operating Partnership; and

• creates time and cost efficiencies through the preparation of one combined set of notes instead of two separate sets.

MAA, an S&P 500 company, is a multifamily-focused, self-administered and self-managed real estate investment trust, or REIT.  Management operates MAA and the Operating Partnership as one business. The management of the Company is comprised of individuals who are officers of MAA and employees of the Operating Partnership.  Management believes it is important to understand the few differences between MAA and the Operating Partnership in the context of how MAA and the Operating Partnership operate as a consolidated company.  MAA and the Operating Partnership are structured as an umbrella partnership REIT, or UPREIT. MAA’s interest in the Operating Partnership entitles MAA to share in cash distributions from, and in the profits and losses of, the Operating Partnership in proportion to MAA’s percentage interest therein and entitles MAA to vote on substantially all matters requiring a vote of the partners.  MAA’s only material asset is its ownership of limited partnership interests in the Operating Partnership (other than cash held by MAA from time to time); therefore, MAA’s primary function is acting as the sole general partner of the Operating Partnership, issuing public equity from time to time and guaranteeing certain debt of the Operating Partnership. The Operating Partnership holds, directly or indirectly, all of the Company’s real estate assets.  Except for net proceeds from public equity issuances by MAA, which are contributed to the Operating Partnership in exchange for limited partnership interests, the Operating Partnership generates the capital required by the business through the Operating Partnership’s operations, direct or indirect incurrence of indebtedness and issuance of OP Units.

The presentations of MAA’s shareholders’ equity and the Operating Partnership’s capital are the principal areas of difference between the condensed consolidated financial statements of MAA and those of the Operating Partnership.  MAA’s shareholders’ equity may include shares of preferred stock, shares of common stock, additional paid-in capital, cumulative earnings, cumulative distributions, noncontrolling interest, treasury shares, accumulated other comprehensive income and redeemable common stock.  The Operating Partnership’s capital may include common capital and preferred capital of the general partner (MAA), limited partners’ common capital and preferred capital, noncontrolling interest, accumulated other comprehensive income and redeemable common units.  Holders of OP Units (other than MAA) may require the Operating Partnership to redeem their OP Units from time to time, in which case the Operating Partnership may, at its option, pay the redemption price either in cash (in an amount per OP Unit equal, in general, to the average closing price of MAA’s common stock on the New York Stock Exchange, or NYSE, over a specified period prior to the redemption date) or by delivering one share of MAA’s common stock (subject to adjustment under specified circumstances) for each OP Unit so redeemed.

Organization of Mid-America Apartment Communities, Inc.

The Company owns, operates, acquires and selectively develops apartment communities primarily located in the Southeast, Southwest and Mid-Atlantic regions of the United States.  As of September 30, 2020, the Company owned and operated 299 apartment communities through the Operating Partnership and its subsidiaries and had an ownership interest in one apartment community through an unconsolidated real estate joint venture.  As of September 30, 2020, the Company had six development communities under construction totaling 1,940 apartment units once complete.  Total expected costs for the six development projects are $459.5 million, of which $264.0 million had been incurred through September 30, 2020.  MAA expects to complete one of these developments in

12

2020, four developments in 2021 and one development in 2022. As of September 30, 2020, thirty-two of the Company’s apartment communities included retail components with approximately 630,000 square feet of gross leasable space.  In addition, as of September 30, 2020, the Company had four commercial properties with approximately 260,000 square feet of combined gross leasable area.  The Company’s apartment communities and commercial properties were located across 16 states and the District of Columbia as of September 30, 2020.

Basis of Presentation and Principles of Consolidation

The accompanying condensed consolidated financial statements have been prepared by the Company’s management in accordance with United States generally accepted accounting principles, or GAAP, and applicable rules and regulations of the Securities and Exchange Commission, or the SEC.  The condensed consolidated financial statements of MAA presented herein include the accounts of MAA, the Operating Partnership and all other subsidiaries in which MAA has a controlling financial interest. MAA owns, directly or indirectly, approximately 80% to 100% of all consolidated subsidiaries, including the Operating Partnership.  The condensed consolidated financial statements of MAALP presented herein include the accounts of MAALP and all other subsidiaries in which MAALP has a controlling financial interest.  MAALP owns, directly or indirectly, 80% to 100% of all consolidated subsidiaries.  In management’s opinion, all adjustments necessary for a fair presentation of the condensed consolidated financial statements have been included, and all such adjustments were of a normal recurring nature.  All significant intercompany accounts and transactions have been eliminated in consolidation.

The Company invests in entities which may qualify as variable interest entities, or VIEs, and MAALP is considered a VIE.  A VIE is a legal entity in which the equity investors lack sufficient equity at risk for the entity to finance its activities without additional subordinated financial support or, as a group, the holders of the equity investment at risk lack the power to direct the activities of a legal entity as well as the obligation to absorb its expected losses or the right to receive its expected residual returns.  MAALP is classified as a VIE, because the limited partners lack substantive kick-out rights and substantive participating rights.  The Company consolidates all VIEs for which it is the primary beneficiary and uses the equity method to account for investments that qualify as VIEs but for which it is not the primary beneficiary.  In determining whether the Company is the primary beneficiary of a VIE, management considers both qualitative and quantitative factors, including, but not limited to, those activities that most significantly impact the VIE’s economic performance and which party controls such activities.  The Company uses the equity method of accounting for its investments in entities for which the Company exercises significant influence, but does not have the ability to exercise control.  The factors considered in determining whether the Company has the ability to exercise control include ownership of voting interests and participatory rights of investors (see “Investments in Unconsolidated Affiliates” below).

Reclassifications

In order to present comparative financial statements, certain reclassifications have been made to the Condensed Consolidated Statements of Operations. Prior year amounts have been changed to conform to the Company’s current year presentation.  As a result of these reclassifications, $1.3 million and $2.3 million of expenses previously reported as “General and administrative expenses” for the three and nine months ended September 30, 2019, respectively, have been reclassified to the “Other non-operating (income) expense” line item of the Condensed Consolidated Statements of Operations in this report.

Noncontrolling Interests

As of September 30, 2020, the Company had two types of noncontrolling interests with respect to its consolidated subsidiaries, (1) noncontrolling interests related to the common unitholders of its Operating Partnership and (2) noncontrolling interests related to its consolidated real estate entities.  The noncontrolling interests relating to the limited partnership interests in the Operating Partnership are owned by the holders of the Class A OP Units. MAA is the sole general partner of the Operating Partnership and holds all of the outstanding Class B OP Units. Net income (after allocations to preferred ownership interests) is allocated to MAA and the noncontrolling interests based on their respective ownership percentages of the Operating Partnership. Issuance of additional Class A OP Units or Class B OP Units changes the ownership percentage of both the noncontrolling interests and MAA. The issuance of Class B OP Units generally occurs when MAA issues common stock and the issuance proceeds are contributed to the Operating Partnership in exchange for Class B OP Units equal to the number of shares of MAA’s common stock issued. At each reporting period, the allocation between total MAA shareholders’ equity and noncontrolling interests is adjusted to account for the change in the respective percentage ownership of the underlying equity of the Operating Partnership. MAA’s Board of Directors established economic rights in respect to each Class A OP Unit that were equivalent to the economic rights in respect to each share of MAA common stock. See Note 9 for additional details.

The noncontrolling interests relating to the Company’s two consolidated real estate entities are owned by private real estate companies that are generally responsible for the development and construction of the apartment communities that are owned through the consolidated real estate entities with a noncontrolling interest.  The entities were determined to be VIE’s with the Company designated as the primary beneficiary.  As a result, the accounts of the entities are consolidated by the Company.  As of September 30, 2020, the consolidated assets and liabilities of the Company’s consolidated real estate entities with a noncontrolling interest were $96.0 million and $10.2 million, respectively.  As of December 31, 2019, the consolidated assets and liabilities of the Company’s consolidated real estate entities with a noncontrolling interest were $46.0 million and $3.2 million, respectively.

13

Investments in Unconsolidated Affiliates

The Company uses the equity method to account for its investments in a real estate joint venture and two technology-focused limited partnerships that qualify as a VIE. Management determined the Company is not the primary beneficiary in any of these investments but does have the ability to exert significant influence over the operations and financial policies of the real estate joint venture and considers its investment in the limited partnerships to be more than minor. The Company’s investment in the real estate joint venture was $43.5 million and $43.7 million as of September 30, 2020 and December 31, 2019, respectively.

As of September 30, 2020 and December 31, 2019, the Company’s investments in the technology-focused limited partnerships were $21.3 million and $13.1 million, respectively, and are included in “Other assets” in the accompanying Condensed Consolidated Balance Sheets. As of September 30, 2020, the Company was committed until February 2025 to make additional capital contributions totaling $21.3 million if and when called by the general partners of the limited partnerships.

Fair Value Measurements

The Company applies the guidance in Accounting Standards Codification (“ASC”) Topic 820, Fair Value Measurements and Disclosures, to the valuation of real estate assets recorded at fair value, to its impairment valuation analysis of real estate assets, to its disclosure of the fair value of financial instruments, principally indebtedness and to its derivative financial instruments.  Fair value disclosures required under ASC Topic 820 as well as the Company’s derivative accounting policies are summarized in Note 7 utilizing the following hierarchy:

Level 1 - Quoted prices in active markets for identical assets or liabilities that are accessible at the measurement date.

Level 2 - Inputs other than quoted prices that are observable for the asset or liability, either directly or indirectly.

Level 3 - Unobservable inputs for the assets or liability.

Revenue Recognition

The Company primarily leases multifamily residential apartments to residents under operating leases generally due on a monthly basis with terms of approximately one year or less.  Rental revenues are recognized in accordance with ASC Topic 842, Leases, using a method that represents a straight-line basis over the term of the lease. In addition, in circumstances where a lease incentive is provided to tenants, the incentive is recognized as a reduction of rental revenues on a straight-line basis over the reasonably assured lease term.  Rental revenues represent approximately 93% of the Company’s total revenues and include gross rents charged less adjustments for concessions and bad debt.  Approximately 6% of the Company’s total revenues represent non-lease reimbursable property revenues from its residents for utility reimbursements, which are generally recognized and due on a monthly basis as residents obtain control of the service over the term of the lease.  The remaining 1% of the Company’s total revenues represents other non-lease property revenues primarily driven by nonrefundable fees and commissions.

In accordance with ASC Topic 842, rental revenues and non-lease reimbursable property revenues meet the criteria to be aggregated into a single lease component and are reported on a combined basis in the line item “Rental revenues”, as presented in the disaggregation of the Company’s revenues in Note 11.  Other non-lease property revenues are accounted for in accordance with ASC Topic 606, Revenue from Contracts with Customers, which requires revenue recognized outside of the scope of ASC Topic 842 to be recognized when a customer obtains control of promised goods or services in an amount that reflects the consideration the entity expects to receive in exchange for those goods or services. Other non-lease property revenues are reported in the line item “Other property revenues”, as presented in the disaggregation of the Company’s revenues in Note 11.

Leases

The Company is the lessee under certain ground, office, equipment and other operational leases, all of which are accounted for as operating leases in accordance with ASC Topic 842. The Company recognizes a right-of-use asset for the right to use the underlying asset for all leases where the Company is the lessee with terms of more than twelve months, and a related lease liability for the obligation to make lease payments. Expenses related to leases determined to be operating leases are recognized on a straight-line basis.  As of September 30, 2020 and December 31, 2019, right-of-use assets recorded within “Other assets” totaled $50.1 million and $53.8 million, respectively, and related lease obligations recorded within “Accrued expenses and other liabilities” totaled $32.2 million and $33.1 million, respectively, in the Condensed Consolidated Balance Sheets.  As of September 30, 2020, the Company’s operating leases had a weighted average remaining lease term of approximately 31 years and a weighted average discount rate of approximately 4.4%. Lease expense recognized for the three and nine months ended September 30, 2020 and 2019 was immaterial to the Company. Cash paid for amounts included in the measurement of operating lease liabilities during the nine months ended September 30, 2020 and 2019 was also immaterial.

14

Recently Adopted Accounting Pronouncements

In June 2016, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) No. 2016-13, Measurement of Credit Losses on Financial Instruments, which amends the current approach to estimate credit losses on certain financial assets, including trade and other receivables, available-for-sale securities and other financial instruments.  The ASU requires entities to estimate a lifetime expected credit loss for most financial instruments, including trade receivables.  Subsequent changes in the valuation allowance are recorded in current earnings and reversal of previous losses is permitted.  In November 2018, the FASB issued an amendment excluding operating lease receivables accounted for under ASC Topic 842 from the scope of the new credit losses standard. The Company adopted the standard on January 1, 2020. The adoption of ASU No. 2016-13 did not result in significant changes in the accounting for the Company’s approach to estimate credit losses on financial assets, as substantially all of the Company’s financial assets are operating lease receivables.   

2.Earnings per Common Share of MAA

Basic earnings per share is computed by dividing net income available to MAA common shareholders by the weighted average number of common shares outstanding during the period.  All outstanding unvested restricted share awards contain rights to non-forfeitable dividends and participate in undistributed earnings with shareholders and, accordingly, are considered participating securities that are included in the two-class method of computing basic earnings per share.  Both the unvested restricted shares and other potentially dilutive common shares, and the related impact to earnings, are considered when calculating earnings per share on a diluted basis with diluted earnings per share being the more dilutive of the treasury stock or two-class methods.  OP Units are included in dilutive earnings per share calculations when the units are dilutive to earnings per share.

For the three and nine months ended September 30, 2020 and 2019, MAA’s diluted earnings per share was computed using the treasury stock method as presented below (dollars and shares in thousands, except per share amounts):

	Three months ended September 30,						Nine months ended September 30,
	2020			2019			2020			2019
Calculation of Earnings per common share - basic
Net income	$	62,036		$	81,459		$	177,716		$	211,558
Net income attributable to noncontrolling interests		(2,126	)		(2,814	)		(6,096	)		(7,336	)
Unvested restricted stock (allocation of earnings)		(78	)		(118	)		(229	)		(302	)
Preferred dividends		(922	)		(922	)		(2,766	)		(2,766	)
Net income available for MAA common shareholders, adjusted	$	58,910		$	77,605		$	168,625		$	201,154
Weighted average common shares - basic		114,216			113,877			114,177			113,814
Earnings per common share - basic	$	0.52		$	0.68		$	1.48		$	1.77
Calculation of Earnings per common share - diluted
Net income	$	62,036		$	81,459		$	177,716		$	211,558
Net income attributable to noncontrolling interests (1)		(2,126	)		(2,814	)		(6,096	)		(7,336	)
Preferred dividends		(922	)		(922	)		(2,766	)		(2,766	)
Net income available for MAA common shareholders, adjusted	$	58,988		$	77,723		$	168,854		$	201,456
Weighted average common shares - basic		114,216			113,877			114,177			113,814
Effect of dilutive securities		252			260			310			238
Weighted average common shares - diluted		114,468			114,137			114,487			114,052
Earnings per common share - diluted	$	0.52		$	0.68		$	1.47		$	1.77

⁽¹⁾ For the three and nine months ended September 30, 2020 and 2019, 4.1 million OP Units and their related income are not included in the diluted earnings per share calculations as they are not dilutive.

15

3.Earnings per OP Unit of MAALP

Basic earnings per common unit is computed by dividing net income available for common unitholders by the weighted average number of OP Units outstanding during the period.  All outstanding unvested restricted unit awards contain rights to non-forfeitable distributions and participate in undistributed earnings with common unitholders and, accordingly, are considered participating securities that are included in the two-class method of computing basic earnings per common unit.  Diluted earnings per common unit reflects the potential dilution that could occur if securities or other contracts to issue OP Units were exercised or converted into OP Units.  Both the unvested restricted unit awards and other potentially dilutive common units, and the related impact to earnings, are considered when calculating earnings per common unit on a diluted basis with diluted earnings per common unit being the more dilutive of the treasury stock or two-class methods.

For the three and nine months ended September 30, 2020 and 2019, MAALP’s diluted earnings per common unit was computed using the treasury stock method as presented below (dollars and units in thousands, except per unit amounts):

	Three months ended September 30,						Nine months ended September 30,
	2020			2019			2020			2019
Calculation of Earnings per common unit - basic
Net income	$	62,036		$	81,459		$	177,716		$	211,558
Unvested restricted stock (allocation of earnings)		(78	)		(118	)		(229	)		(302	)
Preferred unit distributions		(922	)		(922	)		(2,766	)		(2,766	)
Net income available for MAALP common unitholders, adjusted	$	61,036		$	80,419		$	174,721		$	208,490
Weighted average common units - basic		118,274			117,958			118,238			117,910
Earnings per common unit - basic	$	0.52		$	0.68		$	1.48		$	1.77
Calculation of Earnings per common unit - diluted
Net income	$	62,036		$	81,459		$	177,716		$	211,558
Preferred unit distributions		(922	)		(922	)		(2,766	)		(2,766	)
Net income available for MAALP common unitholders, adjusted	$	61,114		$	80,537		$	174,950		$	208,792
Weighted average common units - basic		118,274			117,958			118,238			117,910
Effect of dilutive securities		252			260			310			238
Weighted average common units - diluted		118,526			118,218			118,548			118,148
Earnings per common unit - diluted	$	0.52		$	0.68		$	1.48		$	1.77

16

4.MAA Equity

Changes in MAA’s total equity and its components for the three months ended September 30, 2020 and 2019 were as follows (dollars in thousands):

	Mid-America Apartment Communities, Inc. Shareholders’ Equity
	Preferred Stock		Common Stock		Additional Paid-In Capital		Accumulated Distributions in Excess of Net Income			Accumulated Other Comprehensive Loss			Noncontrolling Interests - Operating Partnership			Noncontrolling Interests - Consolidated Real Estate Entities		Total Equity
EQUITY BALANCE JUNE 30, 2020	$	9	$	1,140	$	7,168,886	$	(1,202,536	)	$	(12,665	)	$	209,894		$	6,849	$	6,171,577
Net income		—		—		—		59,910			—			2,126			—		62,036
Other comprehensive income - derivative instruments		—		—		—		—			269			10			—		279
Issuance and registration of common shares		—		—		33		—			—			—			—		33
Shares issued in exchange for common units		—		—		21		—			—			(21	)		—		—
Redeemable stock fair market value adjustment		—		—		—		(155	)		—			—			—		(155	)
Adjustment for noncontrolling interests in    Operating Partnership		—		—		71		—			—			(71	)		—		—
Amortization of unearned compensation		—		—		4,380		—			—			—			—		4,380
Dividends on preferred stock		—		—		—		(922	)		—			—			—		(922	)
Dividends on common stock ($1.00 per share)		—		—		—		(114,369	)		—			—			—		(114,369	)
Dividends on noncontrolling interests units    ($1.00 per unit)		—		—		—		—			—			(3,866	)		—		(3,866	)
Contribution from noncontrolling interest		—		—		—		—			—			—			262		262
EQUITY BALANCE SEPTEMBER 30, 2020	$	9	$	1,140	$	7,173,391	$	(1,258,072	)	$	(12,396	)	$	208,072		$	7,111	$	6,119,255

	Mid-America Apartment Communities, Inc. Shareholders’ Equity
	Preferred Stock		Common Stock		Additional Paid-In Capital			Accumulated Distributions in Excess of Net Income			Accumulated Other Comprehensive Loss			Noncontrolling Interests - Operating Partnership			Noncontrolling Interests - Consolidated Real Estate Entities		Total Equity
EQUITY BALANCE JUNE 30, 2019	$	9	$	1,138	$	7,146,076		$	(1,086,665	)	$	(9,092	)	$	215,404		$	5,656	$	6,272,526
Net income		—		—		—			78,645			—			2,814			—		81,459
Other comprehensive loss - derivative instruments		—		—		—			—			(5,778	)		(195	)		—		(5,973	)
Issuance and registration of common shares		—		—		140			—			—			—			—		140
Exercise of stock options		—		—		(204	)		—			—			—			—		(204	)
Shares issued in exchange for common units		—		—		836			—			—			(836	)		—		—
Redeemable stock fair market value adjustment		—		—		—			(1,269	)		—			—			—		(1,269	)
Adjustment for noncontrolling interests in    Operating Partnership		—		—		(272	)		—			—			272			—		—
Amortization of unearned compensation		—		—		3,313			—			—			—			—		3,313
Dividends on preferred stock		—		—		—			(922	)		—			—			—		(922	)
Dividends on common stock ($0.96 per share)		—		—		—			(109,503	)		—			—			—		(109,503	)
Dividends on noncontrolling interests units    ($0.96 per unit)		—		—		—			—			—			(3,912	)		—		(3,912	)
Contribution from noncontrolling interest		—		—		—			—			—			—			955		955
EQUITY BALANCE SEPTEMBER 30, 2019	$	9	$	1,138	$	7,149,889		$	(1,119,714	)	$	(14,870	)	$	213,547		$	6,611	$	6,236,610

17

Changes in MAA’s total equity and its components for the nine months ended September 30, 2020 and 2019 were as follows (dollars in thousands):

	Mid-America Apartment Communities, Inc. Shareholders’ Equity
	Preferred Stock		Common Stock		Additional Paid-In Capital			Accumulated Distributions in Excess of Net Income			Accumulated Other Comprehensive Loss			Noncontrolling Interests - Operating Partnership			Noncontrolling Interests - Consolidated Real Estate Entities		Total Equity
EQUITY BALANCE DECEMBER 31, 2019	$	9	$	1,140	$	7,166,073		$	(1,085,479	)	$	(13,178	)	$	214,647		$	6,247	$	6,289,459
Net income		—		—		—			171,620			—			6,096			—		177,716
Other comprehensive income - derivative instruments		—		—		—			—			782			28			—		810
Issuance and registration of common shares		—		—		(344	)		—			—			—			—		(344	)
Shares repurchased and retired		—		—		(5,657	)		—			—			—			—		(5,657	)
Exercise of stock options		—		—		71			—			—			—			—		71
Shares issued in exchange for common units		—		—		471			—			—			(471	)		—		—
Redeemable stock fair market value adjustment		—		—		—			1,659			—			—			—		1,659
Adjustment for noncontrolling interests in    Operating Partnership		—		—		244			—			—			(244	)		—		—
Amortization of unearned compensation		—		—		12,533			—			—			—			—		12,533
Dividends on preferred stock		—		—		—			(2,766	)		—			—			—		(2,766	)
Dividends on common stock ($3.00 per share)		—		—		—			(343,106	)		—			—			—		(343,106	)
Dividends on noncontrolling interests units    ($3.00 per unit)		—		—		—			—			—			(11,984	)		—		(11,984	)
Contribution from noncontrolling interest		—		—		—			—			—			—			864		864
EQUITY BALANCE SEPTEMBER 30, 2020	$	9	$	1,140	$	7,173,391		$	(1,258,072	)	$	(12,396	)	$	208,072		$	7,111	$	6,119,255

	Mid-America Apartment Communities, Inc. Shareholders’ Equity
	Preferred Stock		Common Stock		Additional Paid-In Capital			Accumulated Distributions in Excess of Net Income			Accumulated Other Comprehensive Loss			Noncontrolling Interests - Operating Partnership			Noncontrolling Interests - Consolidated Real Estate Entities		Total Equity
EQUITY BALANCE DECEMBER 31, 2018	$	9	$	1,136	$	7,138,170		$	(989,263	)	$	(212	)	$	220,043		$	2,306	$	6,372,189
Net income		—		—		—			204,222			—			7,336			—		211,558
Other comprehensive loss - derivative instruments		—		—		—			—			(14,658	)		(520	)		—		(15,178	)
Issuance and registration of common shares		—		2		748			—			—			—			—		750
Shares repurchased and retired		—		—		(3,724	)		—			—			—			—		(3,724	)
Exercise of stock options		—		—		1,036			—			—			—			—		1,036
Shares issued in exchange for common units		—		—		1,993			—			—			(1,993	)		—		—
Shares issued in exchange for redeemable stock		—		—		575			—			—			—			—		575
Redeemable stock fair market value adjustment		—		—		—			(3,455	)		—			—			—		(3,455	)
Adjustment for noncontrolling interests in    Operating Partnership		—		—		(459	)		—			—			459			—		—
Amortization of unearned compensation		—		—		11,550			—			—			—			—		11,550
Dividends on preferred stock		—		—		—			(2,766	)		—			—			—		(2,766	)
Dividends on common stock ($2.88 per share)		—		—		—			(328,452	)		—			—			—		(328,452	)
Dividends on noncontrolling interests units    ($2.88 per unit)		—		—		—			—			—			(11,778	)		—		(11,778	)
Contribution from noncontrolling interest		—		—		—			—			—			—			4,305		4,305
EQUITY BALANCE SEPTEMBER 30, 2019	$	9	$	1,138	$	7,149,889		$	(1,119,714	)	$	(14,870	)	$	213,547		$	6,611	$	6,236,610

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5.MAALP Capital

Changes in MAALP’s total capital and its components for the three months ended September 30, 2020 and 2019 were as follows (dollars in thousands):

	Mid-America Apartments, L.P. Unitholders’ Capital
	Limited Partners			General Partner			Preferred Units			Accumulated Other Comprehensive Loss			Noncontrolling Interests- Consolidated Real Estate Entities		Total Partnership Capital
CAPITAL BALANCE JUNE 30, 2020	$	209,894		$	5,901,028		$	66,840		$	(13,053	)	$	6,849	$	6,171,558
Net income		2,126			58,988			922			—			—		62,036
Other comprehensive income - derivative instruments		—			—			—			279			—		279
Issuance of units		—			33			—			—			—		33
General partnership units issued in exchange for limited    partnership units		(21	)		21			—			—			—		—
Redeemable units fair market value adjustment		—			(155	)		—			—			—		(155	)
Adjustment for limited partners’ capital at redemption value		(61	)		61			—			—			—		—
Amortization of unearned compensation		—			4,380			—			—			—		4,380
Distributions to preferred unitholders		—			—			(922	)		—			—		(922	)
Distributions to common unitholders ($1.00 per unit)		(3,866	)		(114,369	)		—			—			—		(118,235	)
Contribution from noncontrolling interest		—			—			—			—			262		262
CAPITAL BALANCE SEPTEMBER 30, 2020	$	208,072		$	5,849,987		$	66,840		$	(12,774	)	$	7,111	$	6,119,236

	Mid-America Apartments, L.P. Unitholders’ Capital
	Limited Partners			General Partner			Preferred Units			Accumulated Other Comprehensive Loss			Noncontrolling Interests - Consolidated Real Estate Entities		Total Partnership Capital
CAPITAL BALANCE JUNE 30, 2019	$	215,404		$	5,993,973		$	66,840		$	(9,366	)	$	5,656	$	6,272,507
Net income		2,814			77,723			922			—			—		81,459
Other comprehensive loss - derivative instruments		—			—			—			(5,973	)		—		(5,973	)
Issuance of units		—			140			—			—			—		140
Exercise of unit options		—			(204	)		—			—			—		(204	)
General partnership units issued in exchange for limited    partnership units		(836	)		836			—			—			—		—
Redeemable units fair market value adjustment		—			(1,269	)		—			—			—		(1,269	)
Adjustment for limited partners’ capital at redemption value		77			(77	)		—			—			—		—
Amortization of unearned compensation		—			3,313			—			—			—		3,313
Distributions to preferred unitholders		—			—			(922	)		—			—		(922	)
Distributions to common unitholders ($0.96 per unit)		(3,912	)		(109,503	)		—			—			—		(113,415	)
Contribution from noncontrolling interest		—			—			—			—			955		955
CAPITAL BALANCE SEPTEMBER 30, 2019	$	213,547		$	5,964,932		$	66,840		$	(15,339	)	$	6,611	$	6,236,591

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Changes in MAALP’s total capital and its components for the nine months ended September 30, 2020 and 2019 were as follows (dollars in thousands):

	Mid-America Apartments, L.P. Unitholders’ Capital
	Limited Partners			General Partner			Preferred Units			Accumulated Other Comprehensive Loss			Noncontrolling Interests- Consolidated Real Estate Entities		Total Partnership Capital
CAPITAL BALANCE DECEMBER 31, 2019	$	214,647		$	6,015,290		$	66,840		$	(13,584	)	$	6,247	$	6,289,440
Net income		6,096			168,854			2,766			—			—		177,716
Other comprehensive income - derivative instruments		—			—			—			810			—		810
Issuance of units		—			(344	)		—			—			—		(344	)
Units repurchased and retired		—			(5,657	)		—			—			—		(5,657	)
Exercise of unit options		—			71			—			—			—		71
General partnership units issued in exchange for limited    partnership units		(471	)		471			—			—			—		—
Redeemable units fair market value adjustment		—			1,659			—			—			—		1,659
Adjustment for limited partners’ capital at redemption value		(216	)		216			—			—			—		—
Amortization of unearned compensation		—			12,533			—			—			—		12,533
Distributions to preferred unitholders		—			—			(2,766	)		—			—		(2,766	)
Distributions to common unitholders ($3.00 per unit)		(11,984	)		(343,106	)		—			—			—		(355,090	)
Contribution from noncontrolling interest		—			—			—			—			864		864
CAPITAL BALANCE SEPTEMBER 30, 2020	$	208,072		$	5,849,987		$	66,840		$	(12,774	)	$	7,111	$	6,119,236

	Mid-America Apartments, L.P. Unitholders’ Capital
	Limited Partners			General Partner			Preferred Units			Accumulated Other Comprehensive Loss			Noncontrolling Interests - Consolidated Real Estate Entities		Total Partnership Capital
CAPITAL BALANCE DECEMBER 31, 2018	$	220,043		$	6,083,142		$	66,840		$	(161	)	$	2,306	$	6,372,170
Net income		7,336			201,456			2,766			—			—		211,558
Other comprehensive loss - derivative instruments		—			—			—			(15,178	)		—		(15,178	)
Issuance of units		—			750			—			—			—		750
Units repurchased and retired		—			(3,724	)		—			—			—		(3,724	)
Exercise of unit options		—			1,036			—			—			—		1,036
General partnership units issued in exchange for limited    partnership units		(1,993	)		1,993			—			—			—		—
Units issued in exchange for redeemable units		—			575			—			—			—		575
Redeemable units fair market value adjustment		—			(3,455	)		—			—			—		(3,455	)
Adjustment for limited partners’ capital at redemption value		(61	)		61			—			—			—		—
Amortization of unearned compensation		—			11,550			—			—			—		11,550
Distributions to preferred unitholders		—			—			(2,766	)		—			—		(2,766	)
Distributions to common unitholders ($2.88 per unit)		(11,778	)		(328,452	)		—			—			—		(340,230	)
Contribution from noncontrolling interest		—			—			—			—			4,305		4,305
CAPITAL BALANCE SEPTEMBER 30, 2019	$	213,547		$	5,964,932		$	66,840		$	(15,339	)	$	6,611	$	6,236,591

6.Borrowings

The following table summarizes the Company’s outstanding debt as of September 30, 2020 (dollars in thousands):

	Balance			Weighted Average Effective Rate			Weighted Average Contract Maturity
Unsecured debt
Variable rate revolving credit facility	$	—			—			—
Variable rate commercial paper program		35,000			0.2	%	10/2/2020
Fixed rate senior notes		3,922,000			3.6	%	1/27/2027
Debt issuance costs, discounts, premiums and fair market value adjustments		(17,575	)
Total unsecured debt	$	3,939,425			3.6	%
Secured debt
Fixed rate property mortgages	$	489,595			4.6	%	12/31/2041
Debt issuance costs and fair market value adjustments		(3,426	)
Total secured debt	$	486,169			4.6	%
Total outstanding debt	$	4,425,594			3.7	%

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Unsecured Revolving Credit Facility

In May 2019, MAALP entered into a $1.0 billion unsecured revolving credit facility with a syndicate of banks led by Wells Fargo Bank, National Association, or Wells Fargo, and fourteen other banks, which is referred to as the Credit Facility.  The Credit Facility replaced MAALP’s previous unsecured revolving credit facility, and it includes an expansion option up to $1.5 billion.  The Credit Facility bears an interest rate of the London Interbank Offered Rate, or LIBOR, plus a spread of 0.75% to 1.45% based on an investment grade pricing grid. The Credit Facility matures in May 2023 with an option to extend for two additional six-month periods.  As of September 30, 2020, there was no outstanding balance under the Credit Facility, while $3.4 million of capacity was used to support outstanding letters of credit.

Unsecured Commercial Paper

In May 2019, MAALP established an unsecured commercial paper program whereby MAALP may issue unsecured commercial paper notes with varying maturities not to exceed 397 days up to a maximum aggregate principal amount outstanding of $500.0 million.  As of September 30, 2020, MAALP had $35.0 million outstanding under the commercial paper program. For the three months ended September 30, 2020, the average daily borrowings outstanding under the commercial paper program were $118.0 million.  

Unsecured Senior Notes

As of September 30, 2020, MAALP had $3.7 billion of publicly issued unsecured senior notes outstanding and $222.0 million of privately placed unsecured senior notes outstanding.  The unsecured senior notes had maturities at issuance ranging from ten to twelve years, with a weighted average of 6.3 years remaining until maturity as of September 30, 2020.

In August 2020, MAALP publicly issued $450.0 million in aggregate principal amount of unsecured senior notes, maturing February 2031 with a coupon rate of 1.700% per annum, or the 2031 Notes.  The purchase price paid by the purchasers was 99.465% of the principal amount.  The 2031 Notes are general unsecured senior obligations of MAALP and rank equally in right of payment with all other senior unsecured indebtedness of MAALP.  Interest on the 2031 Notes is payable on February 15 and August 15 of each year, beginning on February 15, 2021.  The net proceeds of the offering, after deducting the original issue discount, underwriting commissions and expenses of approximately $5.3 million in the aggregate, were $444.7 million.  The 2031 Notes have an effective interest rate of 1.76% and have been reflected net of discount and debt issuance costs in the Condensed Consolidated Balance Sheets as of September 30, 2020.  

Unsecured Term Loan

In August 2020, MAALP retired a $300.0 million term loan with a syndicate of banks led by Wells Fargo due in March 2022.    

Secured Property Mortgages

As of September 30, 2020, MAALP had $489.6 million of fixed rate conventional property mortgages with a weighted average interest rate of 4.60% and a weighted average maturity in 2041.

In July 2020, MAALP retired $63.6 million of mortgages associated with three apartment communities at maturity and $72.2 million of mortgages associated with four apartment communities prior to their October 2020 maturities.

Guarantees

As of September 30, 2020, MAA fully and unconditionally guaranteed $222.0 million of the privately placed unsecured senior notes issued by MAALP.

7.Financial Instruments and Derivatives

Financial Instruments Not Carried at Fair Value

Cash and cash equivalents, restricted cash and accrued expenses and other liabilities are carried at amounts that reasonably approximate their fair value due to their short term nature.

Fixed rate notes payable as of September 30, 2020 and December 31, 2019, totaled $4.4 billion and $4.1 billion, respectively, and had estimated fair values of $4.9 billion and $4.5 billion (excluding prepayment penalties) as of September 30, 2020 and December 31, 2019, respectively. The carrying values of variable rate debt (excluding the effect of interest rate swap agreements) as of September 30, 2020 and December 31, 2019, totaled $35.0 million and $370.0 million, respectively, and had estimated fair values of $35.0 million and $370.8 million (excluding prepayment penalties) as of September 30, 2020 and December 31, 2019, respectively. The fair values of fixed rate debt are determined by using the present value of future cash outflows discounted with the applicable current market rate plus a credit spread. The fair values of variable rate debt are determined using the stated variable rate plus the

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current market credit spread. The variable rates reset every 30 to 90 days, and management concluded these rates reasonably estimate current market rates.

Financial Instruments Measured at Fair Value on a Recurring Basis

As of September 30, 2020, the Company had one outstanding series of cumulative redeemable preferred stock, which is referred to as the MAA Series I preferred stock (see Note 8).  The Company has recognized a derivative asset related to the redemption feature embedded in the MAA Series I preferred stock. The derivative asset is valued using widely accepted valuation techniques, including a discounted cash flow analysis in which the perpetual value of the preferred shares is compared to the value of the preferred shares assuming the call option is exercised, with the value of the bifurcated call option as the difference between the two values. The analysis reflects the contractual terms of the redeemable preferred shares, which are redeemable at the Company’s option beginning on October 1, 2026 and at the redemption price of $50.00 per share. The Company uses various inputs in the analysis, including trading data available on the preferred shares, coupon yields on preferred stock issuances from REITs with similar credit ratings as MAA and treasury rates to determine the fair value of the bifurcated call option.

The redemption feature embedded in the MAA Series I preferred stock is reported as a derivative asset in “Other assets” in the accompanying Condensed Consolidated Balance Sheets and is adjusted to its fair value at each reporting date, with a corresponding non-cash adjustment to “Other non-operating (income) expense” in the accompanying Condensed Consolidated Statements of Operations.  As a result of adjustments of non-cash expense recorded to reflect the change in fair value of the derivative asset during the nine months ended September 30, 2020, the fair value of the embedded derivative asset decreased to $21.9 million as of September 30, 2020 as compared to $36.5 million as of December 31, 2019.

Periodically, the Company uses interest rate swaps to add stability to interest expense and to manage, or hedge, its exposure to interest rate movements associated with anticipated future debt transactions and variable rate debt. The fair values of interest rate swaps are determined using the market standard methodology of netting the discounted future fixed cash receipts (or payments) and the discounted expected variable cash payments (or receipts). The variable cash payments (or receipts) are based on an expectation of future interest rates (forward curves) derived from observable market interest rate curves.

Management incorporates credit valuation adjustments to appropriately reflect both its nonperformance risk and the respective counterparty’s nonperformance risk in the fair value measurements. In adjusting the fair value of the derivative contracts for the effect of nonperformance risk, the Company considers the impact of netting and any applicable credit enhancements, such as collateral postings, thresholds, mutual puts and guarantees. Based on guidance issued by the FASB, the Company made an accounting policy election to measure the credit risk of its derivative financial instruments that are subject to master netting agreements on a net basis by counterparty portfolio.

As of September 30, 2020, the Company did not have any outstanding interest rate derivatives designated as cash flow hedges of interest rate risk. The fair value of interest rate derivative contracts designated as hedging instruments recorded in “Other assets” in the accompanying Condensed Consolidated Balance Sheets as of December 31, 2019 was $0.1 million.  The Company’s interest rate derivative contracts designated as hedging instruments and their related gains and losses are reported in “Net change in operating accounts and other operating activities” in the accompanying Condensed Consolidated Statements of Cash Flows.

The Company has determined the majority of the inputs used to value its outstanding debt and its embedded derivative fall within Level 2 of the fair value hierarchy, and as a result, the fair value valuation of its debt and embedded derivative held as of September 30, 2020 and December 31, 2019 were classified as Level 2 in the fair value hierarchy.

Cash Flow Hedges of Interest Rate Risk

The changes in the fair value of derivatives designated and that qualify as cash flow hedges is recorded in “Accumulated other comprehensive loss” and is subsequently reclassified into earnings in the period that the hedged forecasted transaction affects earnings. As long as a hedging instrument is designated and the results of the effectiveness testing support that the instrument qualifies for hedge accounting treatment, there is no periodic measurement or recognition of ineffectiveness. Rather, the full impact of hedge gains and losses is recognized in the period in which hedged transactions impact earnings, regardless of whether or not economic mismatches exist in the hedging relationship.  Amounts reported in “Accumulated other comprehensive loss” related to derivatives designated as qualifying cash flow hedges are reclassified to interest expense as interest payments are made on the Company’s variable rate or fixed rate debt. During the next twelve months, the Company estimates that an additional $1.1 million will be reclassified to earnings as an increase to “Interest expense”, which primarily represents the difference between the fixed interest rate swap payments and the projected variable interest rate swap receipts.

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Tabular Disclosure of the Effect of Derivative Instruments on the Condensed Consolidated Statements of Operations

The tables below present the effect of the Company’s derivative financial instruments on the Condensed Consolidated Statements of Operations for the three and nine months ended September 30, 2020 and 2019 (dollars in thousands):

Derivatives in Cash Flow Hedging Relationships	Loss Recognized in OCI on Derivative					Location of (Loss) Gain Reclassified from Accumulated	Net (Loss) Gain Reclassified from Accumulated OCL into Interest Expense(1)
Three months ended September 30,	2020		2019			OCL into Income	2020			2019
Interest rate contracts	$	—	$	(5,562	)	Interest expense	$	(279	)	$	411
Nine months ended September 30,
Interest rate contracts	$	—	$	(13,444	)	Interest expense	$	(810	)	$	1,734

⁽¹⁾ See the Condensed Consolidated Statements of Comprehensive Income for changes in accumulated other comprehensive loss as these changes are presented net of the allocation to noncontrolling interests.

Derivatives Not Designated as Hedging Instruments	Location of Gain (Loss) Recognized in	Gain (Loss) Recognized in Earnings on Derivative
Three months ended September 30,	Income on Derivative	2020			2019
Preferred stock embedded derivative	Other non-operating (income) expense	$	1,342		$	15,522
Nine months ended September 30,
Preferred stock embedded derivative	Other non-operating (income) expense	$	(14,603	)	$	19,592

8.Shareholders’ Equity of MAA

As of September 30, 2020, 114,369,812 shares of common stock of MAA and 4,058,258 OP Units (excluding the OP Units held by MAA) were issued and outstanding, representing a total of 118,428,070 common shares and units.  As of September 30, 2019, 114,065,859 shares of common stock of MAA and 4,074,277 OP Units (excluding the OP Units held by MAA) were issued and outstanding, representing a total of 118,140,136 common shares and units. Options to purchase 19,845 shares of MAA’s common stock were outstanding as of September 30, 2020, compared to 45,390 outstanding options as of September 30, 2019. During the nine months ended September 30, 2020 and 2019, MAA issued 918 common shares and 24,256 common shares, respectively, related to the exercise of stock options. These exercises resulted in net proceeds of $0.1 million and $1.0 million, respectively.

Preferred Stock

As of September 30, 2020, MAA had one outstanding series of cumulative redeemable preferred stock which has the following characteristics:

Description	Outstanding Shares		Liquidation Preference(1)		Optional Redemption Date	Redemption Price(2)		Stated Dividend Yield			Approximate Dividend Rate
Series I		867,846	$	50.00	10/1/2026	$	50.00		8.50	%	$	4.25

⁽¹⁾ The total liquidation preference for the outstanding preferred stock is $43.4 million.

⁽²⁾ The redemption price is the price at which the preferred stock is redeemable, at MAA’s option, for cash.

See Note 7 for details of the valuation of the derivative asset related to the redemption feature embedded in the MAA Series I preferred stock.  

At-the-Market Share Offering Program

The Company has entered into separate distribution agreements with each of J.P. Morgan Securities LLC, BMO Capital Markets Corp. and KeyBanc Capital Markets Inc. to establish an at-the-market share offering program, or ATM program, allowing MAA to sell shares of its common stock from time to time into the existing market at current market prices or through negotiated transactions.  Under the ATM program, MAA has the authority to issue up to an aggregate of 4.0 million shares of its common stock, at such times to be determined by MAA.  The ATM program currently has a maturity of September 2021.  MAA has no obligation to issue shares through the ATM program.

During the nine months ended September 30, 2020 and 2019, MAA did not sell any shares of common stock under its ATM program.  As of September 30, 2020, 3.9 million shares remained issuable under the ATM program.

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9.Partners’ Capital of MAALP

Common units of limited partnership interests in MAALP are represented by OP Units.  As of September 30, 2020, there were 118,428,070 OP Units outstanding, 114,369,812, or 96.6%, of which represent Class B OP Units (common units issued to or held by MAALP’s general partner or any of its subsidiaries), which were owned by MAA, MAALP’s general partner.  The remaining 4,058,258 OP Units were Class A OP Units owned by Class A limited partners.  As of September 30, 2019, there were 118,140,136 OP Units outstanding, 114,065,859, or 96.6%, of which were owned by MAA and 4,074,277 of which were owned by the Class A limited partners.

MAA, as the sole general partner of MAALP, has full, complete and exclusive discretion to manage and control the business of MAALP subject to the restrictions specifically contained within MAALP’s agreement of limited partnership, or the Partnership Agreement.  Unless otherwise stated in the Partnership Agreement, this power includes, but is not limited to, acquiring, leasing or disposing of any real property; constructing buildings and making other improvements to properties owned; borrowing money, modifying or extinguishing current borrowings, issuing evidence of indebtedness and securing such indebtedness by mortgage, deed of trust, pledge or other lien on MAALP’s assets; and distribution of MAALP’s cash or other assets in accordance with the Partnership Agreement.  MAA can generally, at its sole discretion, issue and redeem OP Units and determine the consideration to be received or the redemption price to be paid, as applicable.  The general partner may delegate these and other powers granted if the general partner remains in supervision of the designee.

Under the Partnership Agreement, MAALP may issue Class A OP Units and Class B OP Units.  Class A OP Units are any OP Units other than Class B OP Units, while Class B OP Units are those issued to or held by MAALP’s general partner or any of its subsidiaries.  In general, the limited partners do not have the power to participate in the management or control of MAALP’s business except in limited circumstances, including changes in the general partner and protective rights if the general partner acts outside of the provisions provided in the Partnership Agreement.  The transferability of Class A OP Units is also limited by the Partnership Agreement.

Net income of MAALP (after allocations to preferred ownership interests) is allocated to the general partner and limited partners based on their respective ownership percentages of MAALP.  Issuance or redemption of additional Class A OP Units or Class B OP Units changes the relative ownership percentage of the partners.  The issuance of Class B OP Units generally occurs when MAA issues common stock and the proceeds from that issuance are contributed to MAALP in exchange for the issuance to MAA of a number of OP Units equal to the number of shares of common stock issued.  Likewise, if MAA repurchases or redeems outstanding shares of common stock, MAALP generally redeems an equal number of Class B OP Units with similar terms held by MAA for a redemption price equal to the purchase price of those shares of common stock.  At each reporting period, the allocation between general partner capital and limited partner capital is adjusted to account for the change in the respective percentage ownership of the underlying capital of MAALP.  Holders of the Class A OP Units may require MAA to redeem their Class A OP Units, in which case MAA may, at its option, pay the redemption price either in cash (in an amount per Class A OP Unit equal, in general, to the average closing price of MAA’s common stock on the NYSE over a specified period prior to the redemption date) or by delivering one share of MAA common stock (subject to adjustment under specified circumstances) for each Class A OP Unit so redeemed.

As of September 30, 2020, a total of 4,058,258 Class A OP Units were outstanding and redeemable for 4,058,258 shares of MAA common stock, with an approximate value of $470.6 million, based on the closing price of MAA’s common stock on September 30, 2020 of $115.95 per share.  As of September 30, 2019, a total of 4,074,277 Class A OP Units were outstanding and redeemable for 4,074,277 shares of MAA common stock, with an approximate value of $529.7 million, based on the closing price of MAA’s common stock on September 30, 2019 of $130.01 per share.  MAALP pays the same per unit distributions in respect to the OP Units as the per share dividends MAA pays in respect to its common stock.

As of September 30, 2020, MAALP had one outstanding series of cumulative redeemable preferred units, or the MAALP Series I preferred units.  The MAALP Series I preferred units have the same characteristics as the MAA Series I preferred stock described in Note 8.  As of September 30, 2020, 867,846 units of the MAALP Series I preferred units were outstanding.

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10.Commitments and Contingencies

Leases

The Company’s leases include a ground lease expiring in 2074 related to one of its apartment communities and an office lease expiring in 2028 related to its corporate headquarters.  Both leases contain stated rent increases that generally compensate for the impact of inflation.  The Company also has other commitments related to immaterial office and equipment operating leases.

The table below reconciles undiscounted cash flows for each of the first five years and total of the remaining years to the operating lease obligations recorded on the Condensed Consolidated Balance Sheets as of September 30, 2020 (in thousands):

	Operating Leases
2020	$	707
2021		2,854
2022		2,885
2023		2,875
2024		2,853
Thereafter		65,863
Total minimum lease payments		78,037
Net present value adjustments		(45,856	)
Operating lease obligations	$	32,181

Legal Proceedings

In June 2016, plaintiffs Cathi Cleven and Tara Cleven, on behalf of a purported class of plaintiffs, filed a complaint against MAA and the Operating Partnership in the United States District Court for the Western District of Texas, Austin Division.  In January 2017, Areli Arellano and Joe L. Martinez joined the lawsuit as additional plaintiffs.  The lawsuit alleges that the Company (but not Post Properties (see the description of the Brown class action lawsuit below)) charged late fees at its Texas properties that violate Section 92.019 of the Texas Property Code, or Section 92.019, which provides that a landlord may not charge a tenant a late fee for failing to pay rent unless, among other things, the fee is a reasonable estimate of uncertain damages to the landlord that are incapable of precise calculation and result from the late payment of rent.  The plaintiffs are seeking monetary damages and attorneys’ fees and costs.  In September 2018, the District Court certified a class proposed by the plaintiffs. Additionally, in September 2018, the District Court denied the Company’s motion for summary judgment and granted the plaintiffs’ motion for partial summary judgment.  Because the District Court certified a class prior to granting the plaintiffs’ motion for partial summary judgment, the District Court’s ruling applies to the entire class.  In October 2018, the Fifth Circuit Court of Appeals accepted the Company’s petition to review the District Court’s order granting class certification.  In September 2019, the Fifth Circuit Court of Appeals heard the Company’s oral arguments. The Company also intends to appeal the District Court’s order granting plaintiff’s motion for summary judgment to the Fifth Circuit Court of Appeals if permission to appeal is granted.  The Company will continue to vigorously defend the action and pursue such appeals.  Management estimates that the Company’s maximum exposure in the lawsuit, given the class certification and summary judgment ruling, is $54.6 million, which includes both potential damages and attorneys’ fees but excludes any prejudgment interest that may be awarded.

In April 2017, plaintiff Nathaniel Brown, on behalf of a purported class of plaintiffs, filed a complaint against the Operating Partnership, as the successor by merger to Post Properties’ primary operating partnership, and MAA in the United States District Court for the Western District of Texas, Austin Division.  The lawsuit alleges that Post Properties (and, following the Post Properties merger in December 2016, the Operating Partnership) charged late fees at its Texas properties that violate Section 92.019.  The plaintiffs are seeking monetary damages and attorney’s fees and costs.  In September 2018, the District Court certified a class proposed by the plaintiff.  Additionally, in September 2018, the District Court denied the Company’s motion for summary judgment and granted the plaintiff’s motion for partial summary judgment. Because the District Court certified a class prior to granting the plaintiff’s motion for partial summary judgment, the District Court’s ruling applies to the entire class.  In October 2018, the Fifth Circuit Court of Appeals accepted the Company’s petition to review the District Court’s order granting class certification. In September 2019, the Fifth Circuit Court of Appeals heard the Company’s oral arguments. The Company also intends to appeal the District Court’s order granting plaintiff’s motion for summary judgment to the Fifth Circuit Court of Appeals if permission to appeal is granted.  The Company will continue to vigorously defend the action and pursue such appeals.  Management estimates that the Company’s maximum exposure in the lawsuit, given the class certification and summary judgment ruling, is $8.4 million, which includes both potential damages and attorneys’ fees but excludes any prejudgment interest that may be awarded.

The Company is subject to various other legal proceedings and claims that arise in the ordinary course of its business operations.  Matters which arise out of allegations of bodily injury, property damage and employment practices are generally covered by insurance.  While the resolution of these other matters cannot be predicted with certainty, management does not currently believe that such matters, either individually or in the aggregate, will have a material adverse effect on the Company’s financial condition, results of operations or cash flows in the event of a negative outcome.

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Loss Contingencies

The outcomes of claims, disputes and legal proceedings are subject to significant uncertainty.  The Company records an accrual for loss contingencies when a loss is probable and the amount of the loss can be reasonably estimated.  The Company also accrues an estimate of defense costs expected to be incurred in connection with legal matters.  Management reviews these accruals quarterly and makes revisions based on changes in facts and circumstances.  When a loss contingency is not both probable and reasonably estimable, management does not accrue the loss. However, if the loss (or an additional loss in excess of the accrual) is at least a reasonable possibility and material, then management discloses a reasonable estimate of the possible loss, or range of loss, if such reasonable estimate can be made.  If the Company cannot make a reasonable estimate of the possible loss, or range of loss, then a statement to that effect is disclosed.

The assessment of whether a loss is probable or a reasonable possibility, and whether the loss or range of loss is reasonably estimable, often involves a series of complex judgments about future events.  Among the factors considered in this assessment, are the nature of existing legal proceedings and claims, the asserted or possible damages or loss contingency (if reasonably estimable), the progress of the matter, existing law and precedent, the opinions or views of legal counsel and other advisers, management’s experience in similar matters, the facts available to management at the time of assessment, and how the Company intends to respond, or has responded, to the proceeding or claim.  Management’s assessment of these factors may change over time as individual proceedings or claims progress.  For matters where management is not currently able to reasonably estimate a range of reasonably possible loss, the factors that have contributed to this determination include the following: (i) the damages sought are indeterminate; (ii) the proceedings are in the early stages; (iii) the matters involve novel or unsettled legal theories or a large or uncertain number of actual or potential cases or parties; and/or (iv) discussions with the parties in matters that are ultimately expected to be resolved through negotiation and settlement have not reached the point where management believes a reasonable estimate of loss, or range of loss, can be made.  The Company believes that there is considerable uncertainty regarding the timing or ultimate resolution of such matters, including a possible eventual loss or business impact, if any.

As of September 30, 2020 and December 31, 2019, the Company’s accrual for loss contingencies relating to unresolved legal matters was $7.4 million and $8.6 million in the aggregate, respectively.  The loss contingencies are presented in “Accrued expenses and other liabilities” in the accompanying Condensed Consolidated Balance Sheets.

11.Segment Information

As of September 30, 2020, the Company owned and operated 299 multifamily apartment communities in 16 different states from which it derived all significant sources of earnings and operating cash flows.  The Company views each consolidated apartment community as an operating segment. The Company’s chief operating decision maker, which is the Company’s Chief Executive Officer, evaluates performance and determines resource allocations of each of the apartment communities on a Same Store and Non-Same Store and Other basis, as well as an individual apartment community basis. This is consistent with the aggregation criteria under GAAP as each of the apartment communities generally has similar economic characteristics, facilities, services, and tenants.

The following reflects the two reportable segments for the Company:

• Same Store communities are communities that the Company has owned and have been stabilized for at least a full 12 months.

• Non-Same Store and Other includes recently acquired communities, communities in development or lease-up, communities that have been identified for disposition, communities that have incurred a significant casualty loss and stabilized communities that do not meet the requirements to be Same Store communities. Also included in Non-Same Store and Other are non-multifamily activities.

On the first day of each calendar year, the Company determines the composition of its Same Store and Non-Same Store and Other reportable segments for that year as well as adjusts the previous year, which allows the Company to evaluate full period-over-period operating comparisons.  Properties in development or lease-up are added to the Same Store portfolio on the first day of the calendar year after a community has been owned and stabilized for at least a full 12 months.  Communities are considered stabilized after achieving 90% occupancy for 90 days.  Communities that have been identified for disposition are excluded from the Same Store portfolio.

The chief operating decision maker utilizes net operating income, or NOI, in evaluating the performance of its operating segments.  Total NOI represents total property revenues less total property operating expenses, excluding depreciation and amortization, for all properties held during the period regardless of their status as held for sale.  Management believes that NOI is a helpful tool in evaluating the operating performance of the segments because it measures the core operations of property performance by excluding corporate level expenses and other items not directly related to property operating performance.

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Revenues and NOI for each reportable segment for the three and nine months ended September 30, 2020 and 2019 were as follows (in thousands):

	Three months ended September 30,						Nine months ended September 30,
	2020			2019			2020			2019
Revenues:
Same Store
Rental revenues	$	394,556		$	386,356		$	1,170,844		$	1,137,967
Other property revenues		3,044			3,244			9,012			9,926
Total Same Store revenues		397,600			389,600			1,179,856			1,147,893
Non-Same Store and Other
Rental revenues		25,465			25,917			74,204			75,825
Other property revenues		134			115			263			482
Total Non-Same Store and Other revenues		25,599			26,032			74,467			76,307
Total rental and other property revenues	$	423,199		$	415,632		$	1,254,323		$	1,224,200
Net Operating Income:
Same Store NOI	$	238,702		$	241,362		$	730,702		$	717,216
Non-Same Store and Other NOI		14,683			14,731			43,164			43,926
Total NOI		253,385			256,093			773,866			761,142
Depreciation and amortization		(127,679	)		(124,684	)		(381,257	)		(371,417	)
Property management expenses		(12,691	)		(13,899	)		(39,064	)		(41,195	)
General and administrative expenses		(11,360	)		(10,225	)		(35,181	)		(32,960	)
Interest expense		(41,010	)		(44,513	)		(126,610	)		(136,149	)
Gain (loss) on sale of depreciable real estate assets		20			1,000			(7	)		987
Gain on sale of non-depreciable real estate assets		1,366			—			995			9,260
Other non-operating income (expense)		242			18,800			(13,647	)		23,494
Income tax expense		(665	)		(1,491	)		(2,532	)		(2,814	)
Income from real estate joint venture		428			378			1,153			1,210
Net income attributable to noncontrolling interests		(2,126	)		(2,814	)		(6,096	)		(7,336	)
Dividends to MAA Series I preferred shareholders		(922	)		(922	)		(2,766	)		(2,766	)
Net income available for MAA common shareholders	$	58,988		$	77,723		$	168,854		$	201,456

Assets for each reportable segment as of September 30, 2020 and December 31, 2019 were as follows (in thousands):

	September 30, 2020		December 31, 2019
Assets:
Same Store	$	9,740,808	$	9,975,880
Non-Same Store and Other		1,198,693		1,049,029
Corporate assets		189,203		205,541
Total assets	$	11,128,704	$	11,230,450

12.Real Estate Acquisitions and Dispositions

The following table reflects the Company’s acquisition activity for the nine months ended September 30, 2020:

Land Acquisition	Market	Acres		Date Acquired
Georgetown	Austin, TX		22	January 2020

The following table reflects the Company’s disposition activity for the nine months ended September 30, 2020:

Land Disposition	Market	Acres		Date Sold
Colonial Promenade	Huntsville, AL		27	September 2020

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

The following discussion analyzes the financial condition and results of operations of both MAA and the Operating Partnership, of which MAA is the sole general partner and in which MAA owned a 96.6% interest as of September 30, 2020. MAA conducts all of its business through the Operating Partnership and its various subsidiaries. This discussion should be read in conjunction with the condensed consolidated financial statements and notes thereto included elsewhere in this Quarterly Report on Form 10-Q.

MAA, an S&P 500 company, is a multifamily-focused, self-administered and self-managed real estate investment trust, or REIT. We own, operate, acquire and selectively develop apartment communities primarily located in the Southeast, Southwest and Mid-Atlantic regions of the United States.  As of September 30, 2020, we owned and operated 299 apartment communities through the Operating Partnership and its subsidiaries, and we had an ownership interest in one apartment community through an unconsolidated real estate joint venture and had six development communities under construction.  In addition, as of September 30, 2020, we owned four commercial properties, and 32 of our apartment communities included retail components.  Our apartment communities and commercial properties were located across 16 states and the District of Columbia as of September 30, 2020.

We report in two segments, Same Store and Non-Same Store and Other. Our Same Store segment represents those apartment communities that have been owned and stabilized for at least 12 months as of the first day of the calendar year. Our Non-Same Store and Other segment includes recently acquired communities, communities being developed or in lease-up, communities undergoing extensive renovations, communities identified for disposition, communities that have incurred a significant casualty loss and stabilized communities that do not meet the requirements to be Same Store communities. Also included in our Non-Same Store and Other segment are non-multifamily activities.  Additional information regarding the composition of our segments is included in Note 11 to the condensed consolidated financial statements included elsewhere in this Quarterly Report on Form 10-Q.

Risks Associated with Forward Looking Statements

We consider this and other sections of this Quarterly Report on Form 10-Q to contain forward-looking statements within the meaning of Section 27A of the Securities Act of 1933, as amended, or the Securities Act, and Section 21E of the Securities Exchange Act of 1934, as amended, or the Exchange Act, with respect to our expectations for future periods.  Forward-looking statements do not discuss historical fact, but instead include statements related to expectations, projections, intentions or other items related to the future. Such forward-looking statements include, without limitation, statements regarding the potential impact of the COVID-19 pandemic on our business, statements regarding expected operating performance and results, property stabilizations, property acquisition and disposition activity, joint venture activity, development and renovation activity and other capital expenditures, and capital raising and financing activity, as well as lease pricing, revenue and expense growth, occupancy, interest rate and other economic expectations. Words such as “expects,” “anticipates,” “intends,” “plans,” “believes,” “seeks,” “estimates,” “forecasts,” “projects,” “assumes,” “will,” “may,” “could,” “should,” “target,” “outlook,” “guidance” and variations of such words and similar expressions are intended to identify such forward-looking statements.  Such forward-looking statements involve known and unknown risks, uncertainties and other factors, as described below, which may cause our actual results, performance or achievements to be materially different from the results of operations, financial conditions or plans expressed or implied by such forward-looking statements.  Although we believe that the assumptions underlying the forward-looking statements contained herein are reasonable, any of the assumptions could be inaccurate, and therefore such forward-looking statements included in this report may not prove to be accurate.  In light of the significant uncertainties inherent in the forward-looking statements included herein, the inclusion of such information should not be regarded as a representation by us or any other person that the results or conditions described in such statements or our objectives and plans will be achieved.

The following factors, among others, could cause our actual results, performance or achievements to differ materially from those expressed or implied in the forward-looking statements:

• COVID-19 pandemic and measures taken or that may be taken by federal, state and local governmental authorities to combat the spread of the disease;  

• inability to generate sufficient cash flows due to unfavorable economic and market conditions, changes in supply and/or demand, competition, uninsured losses, changes in tax and housing laws, or other factors;

• exposure, as a multifamily focused REIT, to risks inherent in investments in a single industry and sector;

• adverse changes in real estate markets, including, but not limited to, the extent of future demand for multifamily units in our significant markets, barriers of entry into new markets which we may seek to enter in the future, limitations on our ability to increase rental rates, competition, our ability to identify and consummate attractive acquisitions or development projects on favorable terms, our ability to consummate any planned dispositions in a timely manner on acceptable terms, and our ability to reinvest sale proceeds in a manner that generates favorable returns;

• failure of new acquisitions to achieve anticipated results or be efficiently integrated;

• failure of development communities to be completed within budget and on a timely basis, if at all, to lease-up as anticipated or to achieve anticipated results;

• unexpected capital needs;

• changes in operating costs, including real estate taxes, utilities and insurance costs;

• inability to obtain appropriate insurance coverage at reasonable rates, or at all, or losses from catastrophes in excess of our insurance coverage;

• ability to obtain financing at favorable rates, if at all, and refinance existing debt as it matures;

• level and volatility of interest or capitalization rates or capital market conditions;

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• price volatility, dislocations and liquidity disruptions in the financial markets and the resulting impact on financing;

• the effect of any rating agency actions on the cost and availability of new debt financing;

• the effect of the phase-out of the London Interbank Offered Rate, or LIBOR, as a variable rate debt benchmark by the end of 2021 and the transition to a different benchmark interest rate;

• significant decline in market value of real estate serving as collateral for mortgage obligations;

• significant change in the mortgage financing market that would cause single-family housing, either as an owned or rental product, to become a more significant competitive product;

• our ability to continue to satisfy complex rules in order to maintain our status as a REIT for federal income tax purposes, the ability of the Operating Partnership to satisfy the rules to maintain its status as a partnership for federal income tax purposes, the ability of our taxable REIT subsidiaries to maintain their status as such for federal income tax purposes, and our ability and the ability of our subsidiaries to operate effectively within the limitations imposed by these rules;

• inability to attract and retain qualified personnel;

• cyber liability or potential liability for breaches of our or our service providers’ information technology systems, or business operations disruptions;

• potential liability for environmental contamination;

• adverse legislative or regulatory developments;

• extreme weather, natural disasters, disease outbreak and public health events;

• legal proceedings relating to various issues, which, among other things, could result in a class action lawsuit;

• compliance costs associated with numerous federal, state and local laws and regulations, including those costs associated with laws requiring access for disabled persons; and

• other risks identified in this Quarterly Report on Form 10-Q and in other reports we file with the Securities and Exchange Commission, or the SEC, or in other documents that we publicly disseminate.

New factors may also emerge from time to time that could have a material adverse effect on our business. Except as required by law, we undertake no obligation to publicly update or revise forward-looking statements contained in this Quarterly Report on Form 10-Q to reflect events, circumstances or changes in expectations after the date on which this Quarterly Report on Form 10-Q is filed.

Overview of the Three Months Ended September 30, 2020

For the three months ended September 30, 2020, net income available for MAA common shareholders was $59.0 million as compared to $77.7 million for the three months ended September 30, 2019.  Results for the three months ended September 30, 2020 included $1.3 million of non-cash income related to the fair value adjustment of the embedded derivative in the MAA Series I preferred shares.  Results for the three months ended September 30, 2019 included $15.5 million of non-cash income related to the embedded derivative in the MAA Series I preferred shares. Revenues for the three months ended September 30, 2020 increased 1.8% as compared to the three months ended September 30, 2019, driven by a 2.1% increase in our Same Store segment, partially offset by a 1.7% decrease in our Non-Same Store and Other segment. Property operating expenses, excluding depreciation and amortization, for the three months ended September 30, 2020 increased by 6.4% as compared to the three months ended September 30, 2019, driven by a 7.2% increase in our Same Store segment. The drivers of these increases are discussed below in the “Results of Operations” section.

COVID-19 Developments

We believe the best way we can continue to help our residents is to work with those who have lost wages or compensation due to the COVID-19 pandemic so that they can remain in their homes. We have offered these impacted residents amendments to their leases that provided varying degrees of payment flexibility with respect to rent and waived late fees and interest charges under the original lease for rent that was deferred under a lease amendment.

Our on-site leasing offices have remained open throughout the COVID-19 pandemic while adhering to orders and directives issued by state and local governments. During the third quarter of 2020, we continued normal operations at our on-site leasing offices, permitting public access and walk-in traffic, subject to social distancing restrictions. Further, property amenities were open as permitted by governmental orders, directives and guidelines. We continue to support our on-site associates with enhanced leave and sick time policies, enhanced flextime arrangements and additional COVID-19 paid time off, among other benefits.

We continue to monitor and comply with the various federal, state and local laws, orders and directives issued in response to the COVID-19 pandemic that affect apartment owners and operators, including the Temporary Halt in Residential Evictions to Prevent the Further Spread of COVID-19 issued by the Centers for Disease Control and Prevention in September 2020.

Trends

During the three months ended September 30, 2020, revenue growth for our Same Store portfolio continued to be favorably impacted by in-place rents and the contribution of average effective rent per unit growth. The average effective rent per unit for our Same Store portfolio continued to increase from the prior year, up 1.8% for the three months ended September 30, 2020 as compared

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to the three months ended September 30, 2019. This growth was partially offset by lower occupancy as compared to the more normal operating conditions for the three months ended September 30, 2019. Average effective rent per unit represents the average of gross rent amounts, after the effect of leasing concessions, for occupied apartment units plus prevalent market rates asked for unoccupied apartment units, divided by the total number of units. Leasing concessions represent discounts to the current market rate. We believe average effective rent per unit is a helpful measurement in evaluating average pricing; however, it does not represent actual rental revenue collected per unit.

In addition, for the three months ended September 30, 2020, average physical occupancy for our Same Store portfolio was 95.6%, which compares to average physical occupancy of 96.1% achieved during the three months ended September 30, 2019.  Average physical occupancy is a measurement of the total number of our apartment units that are occupied by residents, and it represents the average of the daily physical occupancy for the period.

An important part of our portfolio strategy is to maintain diversity of markets, submarkets, product types and price points in the Southeast, Southwest and Mid-Atlantic regions of the United States. This diversity tends to mitigate exposure to economic issues in any one geographic market or area. We believe that a well-balanced portfolio, including inner loop, suburban and downtown/central business district locations, with various monthly rent price points, will perform well in “up” cycles as well as better weather “down” cycles. Through our investment in 36 defined markets, we are diversified across markets, urban and suburban submarkets, and a variety of product types and monthly rent pricing points.

The COVID-19 pandemic continues to disrupt the United States economy and we cannot predict when an economic recovery will occur. Demand for apartments is primarily driven by general economic conditions in our markets and is particularly correlated to job growth.  Government restrictions implemented in response to the pandemic continue to drive high unemployment and limit the number of people looking to change their current living situation.  While our rent collections in the third quarter of 2020 slightly increased as compared to the rent collections in the second quarter of 2020, the current environment could contribute to lower rent collections in the fourth quarter of 2020 and continue to suppress demand for apartments, likely driving rent growth on new leases and renewals lower than it would be in a more normal economic environment. Current elevated supply levels could further affect rent growth for our portfolio, particularly for apartment communities located in urban submarkets.  Properties in suburban submarkets have been impacted somewhat less by supply, primarily because less new development has occurred in those submarkets.

Markets throughout the country have been impacted differently by the pandemic.  The individual market economies continue to be at various stages of reopening and we expect them to stay this way for some period. Further, as new COVID-19 infections continue to occur in most areas of the country including markets where we operate, we are unable to predict if economies will continue to remain open or if they will be disrupted again in the near future.  As we move through this uncertain time, we believe that our portfolio strategy of maintaining a diversity of markets, submarkets, product types, and price points will serve the company better in this environment than a more concentrated portfolio profile.

Our focus during this challenging time has been on working with residents who have been financially impacted by the pandemic on rent payment flexibility. At a portfolio level, we have focused on using our pricing system to maintain strong occupancy. As noted above, average physical occupancy for our Same Store portfolio for the three months ended September 30, 2020 was 95.6%, which we believe positions us well to manage through the current environment.  

While access to the financial markets was initially disrupted by the COVID-19 pandemic, access has returned, particularly for high credit borrowers.  With our successful bond issuance in the third quarter of 2020, we showed our ability to efficiently raise capital through the debt market and believe we could do the same in the equity market as necessary. However, a prolonged disruption of the markets or a decline in credit and financing conditions could negatively affect our ability to access capital necessary to fund our operations or refinance maturing debt.

Results of Operations

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

For the three months ended September 30, 2020, we achieved net income available for MAA common shareholders of $59.0 million, a 24.1% decrease as compared to the three months ended September 30, 2019, and total revenue growth of $7.6 million, representing a 1.8% increase in property revenues as compared to the three months ended September 30, 2019.  The following discussion describes the primary drivers of the decrease in net income available for MAA common shareholders for the three months ended September 30, 2020 as compared to the three months ended September 30, 2019.

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Property Revenues

The following table reflects our property revenues by segment for the three months ended September 30, 2020 and 2019 (dollars in thousands):

	Three months ended September 30,
	2020		2019		Increase			% Increase
Same Store	$	397,600	$	389,600	$	8,000			2.1	%
Non-Same Store and Other		25,599		26,032		(433	)		(1.7	)%
Total	$	423,199	$	415,632	$	7,567			1.8	%

The increase in property revenues for our Same Store segment for the three months ended September 30, 2020 as compared to the three months ended September 30, 2019 was the primary driver of total property revenue growth.  The Same Store segment generated a 2.1% increase in revenues for the three months ended September 30, 2020, primarily a result of average effective rent per unit growth of 1.8% as compared to the three months ended September 30, 2019.  The decrease in property revenues from the Non-Same Store and Other segment for the three months ended September 30, 2020 as compared to three months ended September 30, 2019 was primarily the result of decreased revenues from our retail properties and from the disposition of our five multifamily properties located in the Little Rock, Arkansas market during the fourth quarter of 2019, which marked our exit from that particular market.  These decreases were partially offset by increased revenues from recently completed development properties and 2019 multifamily acquisitions.  

Property Operating Expenses

Property operating expenses include costs for property personnel, building repairs and maintenance, real estate taxes and insurance, utilities, landscaping and other operating expenses. The following table reflects our property operating expenses by segment for the three months ended September 30, 2020 and 2019 (dollars in thousands):

	Three months ended September 30,
	2020		2019		Increase			% Increase
Same Store	$	158,898	$	148,238	$	10,660			7.2	%
Non-Same Store and Other		10,916		11,301		(385	)		(3.4	)%
Total	$	169,814	$	159,539	$	10,275			6.4	%

The increase in property operating expenses for our Same Store segment for the three months ended September 30, 2020 as compared to the three months ended September 30, 2019 was primarily driven by increases in real estate tax expense of $3.0 million, insurance expense of $2.1 million, utility expense of $1.8 million, and marketing expense of $1.7 million.

Depreciation and Amortization

Depreciation and amortization expense for the three months ended September 30, 2020 was $127.7 million, an increase of $3.0 million as compared to the three months ended September 30, 2019. The increase was primarily driven by the recognition of depreciation expense associated with our development and redevelopment activities completed after September 30, 2019 in the normal course of business through September 30, 2020.

Other Income and Expenses

Property management expenses for the three months ended September 30, 2020 were $12.7 million, a decrease of $1.2 million as compared to the three months ended September 30, 2019. General and administrative expenses for the three months ended September 30, 2020 were $11.4 million, an increase of $1.1 million as compared to the three months ended September 30, 2019.  

Interest expense for the three months ended September 30, 2020 was $41.0 million, a decrease of $3.5 million as compared to the three months ended September 30, 2019. The decrease was primarily due to a decrease of 27 basis points in our effective interest rate and an increase in capitalized interest during the three months ended September 30, 2020 as compared to the three months ended September 30, 2019.  The decrease in our effective interest rate was primarily due to debt retirements subsequent to the third quarter of 2019 and through August 2020, which were retired with proceeds from unsecured debt issuances with lower effective interest rates over the same period.  The increase in the capitalized interest expense was due to an increase in the number of development projects.  

During the three months ended September 30, 2020, we sold a land parcel resulting in a $1.4 million gain on sale of non-depreciable assets.  No land parcels were sold during the three months ended September 30, 2019.

Other non-operating (income) expense for the three months ended September 30, 2020 was $0.2 million of income, a decrease of $18.6 million as compared to the three months ended September 30, 2019. The decrease was primarily driven by $1.3 million of non-cash income related to the fair value adjustment of the embedded derivative in the MAA Series I preferred shares

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during the three months ended September 30, 2020, compared to the recognition of $15.5 million of non-cash income related to the adjustment of the embedded derivative during the three months ended September 30, 2019. During the three months ended September 30, 2020, we also recognized $0.4 million of COVID-19 related expenses and recognized $0.1 million of non-cash expense from an unconsolidated limited partnership in other non-operating (income) expense compared to $4.3 million of non-cash income from an unconsolidated limited partnership during the three months ended September 30, 2019.  Our COVID-19 related expenses consisted primarily of cleaning supplies, contract labor and COVID-19 related leave.

Comparison of the nine months ended September 30, 2020 to the nine months ended September 30, 2019

For the nine months ended September 30, 2020, we achieved net income available for MAA common shareholders of $168.9 million, a 16.2% decrease as compared to the nine months ended September 30, 2019, and total revenue growth of $30.1 million, representing a 2.5% increase in property revenues as compared to the nine months ended September 30, 2019. The following discussion describes the primary drivers of the decrease in net income available for MAA common shareholders for the nine months ended September 30, 2020 as compared to the nine months ended September 30, 2019.

Property Revenues

The following table reflects our property revenues by segment for the nine months ended September 30, 2020 and 2019 (dollars in thousands):

	Nine months ended September 30,
	2020		2019		Increase			% Increase
Same Store	$	1,179,856	$	1,147,893	$	31,963			2.8	%
Non-Same Store and Other		74,467		76,307		(1,840	)		(2.4	)%
Total	$	1,254,323	$	1,224,200	$	30,123			2.5	%

The increase in property revenues for our Same Store segment for the nine months ended September 30, 2020 as compared to the nine months ended September 30, 2019 was the primary driver of total property revenue growth. The Same Store segment generated a 2.8% increase in revenues for the nine months ended September 30, 2020, primarily a result of average effective rent per unit growth of 3.1% as compared to the nine months ended September 30, 2019. The decrease in property revenues from the Non-Same Store and Other segment for the nine months ended September 30, 2020 as compared to nine months ended September 30, 2019 was primarily the result of decreased revenues from our retail properties and from our exit from the Little Rock, Arkansas market during the fourth quarter of 2019.  These decreases were partially offset by increased revenues from recently completed development properties and 2019 multifamily acquisitions.  

Property Operating Expenses

Property operating expenses include costs for property personnel, building repairs and maintenance, real estate taxes and insurance, utilities, landscaping and other operating expenses. The following table reflects our property operating expenses by segment for the nine months ended September 30, 2020 and 2019 (dollars in thousands):

	Nine months ended September 30,
	2020		2019		Increase			% Increase
Same Store	$	449,154	$	430,677	$	18,477			4.3	%
Non-Same Store and Other		31,303		32,381		(1,078	)		(3.3	)%
Total	$	480,457	$	463,058	$	17,399			3.8	%

The increase in property operating expenses for our Same Store segment for the nine months ended September 30, 2020 as compared to the nine months ended September 30, 2019 was primarily driven by increases in real estate tax expense of $7.3 million, utilities expense of $3.1 million, marketing expense of $3.0 million, and insurance expense of $2.8 million.  

Depreciation and Amortization

Depreciation and amortization expense for the nine months ended September 30, 2020 was $381.3 million, an increase of $9.8 million as compared to the nine months ended September 30, 2019. The increase was primarily driven by the recognition of depreciation expense associated with our development and redevelopment activities completed after September 30, 2019 in the normal course of business through September 30, 2020.

Other Income and Expenses

Property management expenses for the nine months ended September 30, 2020 were $39.1 million, a decrease of $2.1 million as compared to the nine months ended September 30, 2019. General and administrative expenses for the nine months ended September 30, 2020 were $35.2 million, an increase of $2.2 million as compared to the nine months ended September 30, 2019.  

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Interest expense for the nine months ended September 30, 2020 was $126.6 million, a decrease of $9.5 million as compared to the nine months ended September 30, 2019. The decrease was primarily due to a decrease of 10 basis points in our effective interest rate, an increase in capitalized interest and a decrease in average daily debt outstanding during the nine months ended September 30, 2020 as compared to the nine months ended September 30, 2019.  The decrease in our effective interest rate was primarily due to debt retirements subsequent to the third quarter of 2019 and through August 2020, which were retired with proceeds from unsecured debt issuances with lower effective interest rates over the same period.  The increase in the capitalized interest expense was due to an increase in the number of development projects.  

Gain on sale of non-depreciable assets during the nine months ended September 30, 2020 was $1.0 million, primarily driven by the sale of one land parcel in the third quarter of 2020. During the nine months ended September 30, 2019, we sold two land parcels resulting in a $9.3 million gain on sale of non-depreciable assets.

Other non-operating (income) expense for the nine months ended September 30, 2020 was $13.6 million of expense, as compared to $23.5 million of income for the nine months ended September 30, 2019. The increase was primarily driven by $14.6 million of non-cash expense related to the fair value adjustment of the embedded derivative in the MAA Series I preferred shares during the nine months ended September 30, 2020, compared to the recognition of $19.6 million of non-cash income related to the adjustment of the embedded derivative during the nine months ended September 30, 2019. During the nine months ended September 30, 2020, we also recognized $4.8 million of non-cash income from an unconsolidated limited partnership and $3.0 million of COVID-19 related expenses in other non-operating (income) expense compared to $4.0 million of non-cash income from an unconsolidated limited partnership during nine months ended September 30, 2019. Our COVID-19 related expenses consisted primarily of cleaning supplies, contract labor and COVID-19 related leave.

Funds from Operations and Core Funds from Operations

Funds from operations, or FFO, a non-GAAP financial measure, represents net income available for MAA common shareholders (computed in accordance with the United States generally accepted accounting principles, or GAAP) excluding gains or losses on disposition of operating properties and asset impairment, plus depreciation and amortization of real estate assets, net income attributable to noncontrolling interests and adjustments for joint ventures. Because noncontrolling interest is added back, FFO, when used in this Quarterly Report on Form 10-Q, represents FFO attributable to the Company.

FFO should not be considered as an alternative to net income available for MAA common stockholders or any other GAAP measurement, as an indicator of operating performance or as an alternative to cash flow from operating, investing and financing activities as a measure of liquidity. Management believes that FFO is helpful to investors in understanding our operating performance, primarily because its calculation excludes depreciation and amortization expense on real estate assets. We believe that GAAP historical cost depreciation of real estate assets is generally not correlated with changes in the value of those assets, whose value does not diminish predictably over time, as historical cost depreciation implies. While our calculation of FFO is in accordance with the National Association of Real Estate Investment Trusts’, or NAREIT’s, definition, it may differ from the methodology for calculating FFO utilized by other REITs and, accordingly, may not be comparable to such other REITs.

Core FFO represents FFO as adjusted for items that are not considered part of our core business operations such as adjustments related to the fair value of the embedded derivative in the MAA Series I preferred shares, gain or loss on sale of non-depreciable assets, adjustments for gains or losses from unconsolidated limited partnerships, net casualty gain or loss, gain or loss on debt extinguishment, non-routine legal costs and settlements, COVID-19 related costs and mark-to-market debt adjustments. While our definition of Core FFO may be similar to others in the industry, our methodology for calculating Core FFO may differ from that utilized by other REITs and, accordingly, may not be comparable to such other REITs. Core FFO should not be considered as an alternative to Net income available for MAA common shareholders as an indicator of operating performance. We believe that Core FFO is helpful in understanding our core operating performance between periods in that it removes certain items that by their nature are not comparable over periods and therefore tend to obscure actual operating performance.

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The following table presents a reconciliation of net income available for MAA common shareholders to FFO and Core FFO for the three and nine months ended September 30, 2020 and 2019, as we believe net income available for MAA common shareholders is the most directly comparable GAAP measure (dollars in thousands):

	Three months ended September 30,						Nine months ended September 30,
	2020			2019			2020			2019
Net income available for MAA common shareholders	$	58,988		$	77,723		$	168,854		$	201,456
Depreciation and amortization of real estate assets		125,916			123,171			376,430			366,704
(Gain) loss on sale of depreciable real estate assets		(20	)		(1,000	)		7			(987	)
Depreciation and amortization of real estate assets    of real estate joint venture		153			154			458			465
Net income attributable to noncontrolling interests		2,126			2,814			6,096			7,336
FFO attributable to the Company		187,163			202,862			551,845			574,974
(Gain) loss on embedded derivative in preferred shares(1)		(1,342	)		(15,522	)		14,603			(19,592	)
Gain on sale of non-depreciable real estate assets		(1,366	)		—			(995	)		(9,260	)
Loss (gain) from unconsolidated limited partnerships, net of tax(1)(2)		100			(3,493	)		(4,085	)		(3,169	)
Net casualty loss (gain) and other settlement proceeds(1)		511			(46	)		1,207			(1,899	)
Loss on debt extinguishment(1)		345			5			344			60
Non-routine legal costs and settlements(1)		—			1,260			40			2,276
COVID-19 related costs(1)(3)		376			—			2,983			—
Mark-to-market debt adjustment(4)		83			(51	)		(9	)		(222	)
Core FFO	$	185,870		$	185,015		$	565,933		$	543,168

⁽¹⁾ Included in “Other non-operating (income) expense” in the Condensed Consolidated Statements of Operations.

⁽²⁾ For the nine months ended September 30, 2020, $4.8 million of gains from unconsolidated limited partnerships are offset by $0.7 million of income tax expense.  For the three and nine months ended September 30, 2019, $4.3 million and $4.0 million, respectively, of gains from unconsolidated limited partnerships are offset by $0.8 million of income tax expense.

⁽³⁾ Non-recurring additional costs resulting from the COVID-19 pandemic, consisting primarily of additional cleaning supplies, contract labor and COVID-19 related leave.

⁽⁴⁾ Included in “Interest expense” in the Condensed Consolidated Statements of Operations.

Core FFO for the three months ended September 30, 2020 was $185.9 million, an increase of $0.9 million as compared to the three months ended September 30, 2019, primarily as a result of an increase in property revenues of $7.6 million, and decreases in interest expense of $3.5 million and property management expenses of $1.2 million. The increases to Core FFO were offset by increases in property operating expenses, excluding depreciation and amortization, of $10.3 million and general and administrative expenses of $1.1 million.

Core FFO for the nine months ended September 30, 2020 was $565.9 million, an increase of $22.8 million as compared to the nine months ended September 30, 2019, primarily as a result of an increase in property revenues of $30.1 million, and decreases in interest expense of $9.5 million and property management expenses of $2.1 million. The increases to Core FFO were offset by increases in property operating expenses, excluding depreciation and amortization, of $17.4 million and general and administrative expenses of $2.2 million.

Liquidity and Capital Resources

Our cash flows from operating, investing and financing activities, as well as general economic and market conditions, are the principal factors affecting our liquidity and capital resources.

Operating Activities

Net cash provided by operating activities was $643.9 million for the nine months ended September 30, 2020 as compared to $621.5 million for the nine months ended September 30, 2019.  The increase in operating cash flows was primarily driven by our operating performance.

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Investing Activities

Net cash used in investing activities was $293.2 million for the nine months ended September 30, 2020 as compared to $230.7 million for the nine months ended September 30, 2019.  The primary drivers of the change were as follows (dollars in thousands):

	Primary drivers of cash (outflow) inflow
	during the nine months ended September 30,						Increase (Decrease)
	2020			2019			in Net Cash
Purchases of real estate and other assets	$	(5,004	)	$	(22,860	)	$	17,856
Capital improvements, development and other		(288,183	)		(219,670	)		(68,513	)
Proceeds from disposition of real estate assets		3,278			15,984			(12,706	)

The decrease in cash outflows for purchases of real estate and other assets was driven by the acquisition activity during the nine months ended September 30, 2020 as compared to the nine months ended September 30, 2019.  The increase in cash outflows for capital improvements, development and other was primarily driven by increased development capital spend during the nine months ended September 30, 2020 as compared to the nine months ended September 30, 2019. The decrease in cash inflows related to proceeds from disposition of real estate assets was primarily due to the nature of the real estate assets sold during the nine months ended September 30, 2020 as compared to the nine months ended September 30, 2019.  

Financing Activities

Net cash used in financing activities was $393.7 million for the nine months ended September 30, 2020 as compared to $399.8 million for the nine months ended September 30, 2019.  The primary drivers of the change were as follows (dollars in thousands):

	Primary drivers of cash (outflow) inflow
	during the nine months ended September 30,						Increase (Decrease)
	2020			2019			in Net Cash
Net change in revolving credit facility	$	—		$	(540,000	)	$	540,000
Net change in commercial paper		(35,000	)		200,000			(235,000	)
Proceeds from notes payable		447,593			760,003			(312,410	)
Principal payments on notes payable		(440,222	)		(468,635	)		28,413
Dividends paid on common shares		(342,983	)		(328,239	)		(14,744	)

The decrease in cash outflows related to the net change in revolving credit facility resulted from no net borrowings during the nine months ended September 30, 2020, as compared to the decrease in net borrowings of $540.0 million during the nine months ended September 30, 2019.  The decrease in cash inflows related to the net change in commercial paper resulted from the decrease in net borrowings of $35.0 million on our commercial paper program during the nine months ended September 30, 2020, as compared to the increase in net borrowings of $200.0 million on our commercial paper program during the nine months ended September 30, 2019.  The decrease in cash inflows related to proceeds from notes payable primarily resulted from the issuance of $450.0 million of senior notes during the nine months ended September 30, 2020, as compared to the issuance of $550.0 million of senior notes and $191.3 million of property mortgages during the nine months ended September 30, 2019.  The decrease in cash outflows from principal payments on notes payable primarily resulted from the retirement of a $300.0 million term loan and $135.7 million of property mortgages during the nine months ended September 30, 2020, as compared to the retirement of $450.0 million in term loans and $13.2 million of property mortgages during the nine months ended September 30, 2019.  The increase in cash outflows from dividends paid on common shares primarily resulted from the increase in the dividend rate to $3.00 per share during the nine months ended September 30, 2020, as compared to the dividend rate of $2.88 per share during the nine months ended September 30, 2019.

Equity

As of September 30, 2020, MAA owned 114,369,812 OP Units, comprising a 96.6% limited partnership interest in MAALP, while the remaining 4,058,258 outstanding OP Units were held by limited partners of MAALP other than MAA.  Holders of OP Units (other than MAA) may require us to redeem their OP Units from time to time, in which case we may, at our option, pay the redemption price either in cash (in an amount per OP Unit equal, in general, to the average closing price of MAA’s common stock on the NYSE over a specified period prior to the redemption date) or by delivering one share of MAA’s common stock (subject to adjustment under specified circumstances) for each OP Unit so redeemed.  In addition, MAA has registered under the Securities Act 4,058,258 shares of its common stock that, as of September 30, 2020, were issuable upon redemption of OP Units, in order for those shares to be sold freely in the public markets.

We have entered into separate distribution agreements with each of J.P. Morgan Securities LLC, BMO Capital Markets Corp. and KeyBanc Capital Markets Inc. to establish an ATM program allowing MAA to sell shares of its common stock from time to time into the existing market at current market prices or through negotiated transactions.  Under the ATM program, MAA has the authority

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to issue up to an aggregate of 4.0 million shares of its common stock, at such times to be determined by MAA.  The ATM program currently has a maturity of September 2021.  MAA has no obligation to issue shares through the ATM program.

During the nine months ended September 30, 2020 and 2019, MAA did not sell any shares of common stock under its ATM program. As of September 30, 2020, 3.9 million shares remained issuable under the ATM program.

For more information regarding our equity capital resources, see Note 8 and Note 9 to the condensed consolidated financial statements included elsewhere in this Quarterly Report on Form 10-Q.

Debt

The following schedule reflects our fixed and variable rate debt outstanding as of September 30, 2020 (dollars in thousands):

	Principal Balance			Average Years to Rate Maturity		Effective Rate
Unsecured debt
Fixed rate senior notes	$	3,922,000			6.3		3.6	%
Variable rate commercial paper		35,000			0.1		0.2	%
Debt issuance costs, discounts, premiums and fair market value adjustments		(17,575	)
Total unsecured rate maturity	$	3,939,425			6.3		3.6	%
Secured debt
Fixed rate property mortgages	$	489,595			21.3		4.6	%
Debt issuance costs and fair market value adjustments		(3,426	)
Total secured rate maturity	$	486,169			21.3		4.6	%
Total debt	$	4,425,594			7.9		3.7	%
Total fixed rate debt	$	4,390,594			8.0		3.7	%

The following schedule presents the contractual maturity dates of our outstanding debt, net of debt issuance costs, discounts, premiums and fair market value adjustments, as of September 30, 2020 (dollars in thousands):

	Revolving Credit Facility & Comm. Paper ⁽¹⁾ ⁽²⁾		Public Bonds		Other Unsecured		Secured		Total
2020	$	35,000	$	—	$	—	$	—	$	35,000
2021		—		—		72,711		119,312		192,023
2022		—		249,182		116,849		—		366,031
2023		—		347,992		12,230		—		360,222
2024		—		397,010		19,958		—		416,968
2025		—		396,030		—		7,125		403,155
2026		—		—		—		—		—
2027		—		594,785		—		—		594,785
2028		—		395,326		—		—		395,326
2029		—		562,082		—		—		562,082
Thereafter		—		740,270		—		359,732		1,100,002
Total	$	35,000	$	3,682,677	$	221,748	$	486,169	$	4,425,594

⁽¹⁾ The $35.0 million maturing in 2020 reflects the principal outstanding under MAALP’s unsecured commercial paper program as of September 30, 2020.  Under the terms of the program, MAALP may issue up to a maximum aggregate amount outstanding at any time of $500.0 million.  For the three months ended September 30, 2020, average daily borrowings outstanding under the commercial paper program were $118.0 million.

⁽²⁾ There were no borrowings outstanding under MAALP’s $1.0 billion unsecured revolving credit facility as of September 30, 2020.  The unsecured revolving credit facility has a maturity date of May 2023 plus two six-month extensions.

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The following schedule reflects the interest rate maturities of our outstanding fixed rate debt, net of debt issuance costs, discounts, premiums and fair market value adjustments, as of September 30, 2020 (dollars in thousands):

	Fixed Rate Debt		Effective Rate
2021	$	192,023		5.2	%
2022		366,031		3.6	%
2023		360,222		4.2	%
2024		416,968		4.0	%
2025		403,155		4.2	%
2026		—		—
2027		594,785		3.7	%
2028		395,326		4.2	%
2029		562,082		3.7	%
Thereafter		1,100,002		3.0	%
Total	$	4,390,594		3.7	%

Unsecured Revolving Credit Facility & Commercial Paper

In May 2019, MAALP closed on a $1.0 billion unsecured revolving credit facility with a syndicate of banks led by Wells Fargo Bank, National Association, or Wells Fargo, and fourteen other banks, which we refer to as the Credit Facility.  The Credit Facility replaced our previous unsecured revolving credit facility and includes an expansion option up to $1.5 billion.  The Credit Facility bears an interest rate of LIBOR, plus a spread of 0.75% to 1.45% based on an investment grade pricing grid.  The Credit Facility matures in May 2023 with an option to extend for two additional six-month periods.  As of September 30, 2020, there was no outstanding balance under the Credit Facility, while $3.4 million of capacity was used to support outstanding letters of credit.  The Credit Facility serves as our primary source of short-term liquidity.

In May 2019, MAALP established an unsecured commercial paper program, whereby it can issue unsecured commercial paper notes with varying maturities not to exceed 397 days up to a maximum aggregate amount outstanding of $500.0 million. As of September 30, 2020, there was $35.0 million outstanding under the commercial paper program.

Unsecured Senior Notes

As of September 30, 2020, we had $3.7 billion of publicly issued unsecured senior notes and $222.0 million of privately placed unsecured senior notes outstanding.

In August 2020, MAALP publicly issued $450.0 million in aggregate principal amount of unsecured senior notes, maturing February 2031 with a coupon rate of 1.700% per annum paid semi-annually on February 15 and August 15 of each year.

Unsecured Term Loan

In August 2020, we retired a $300.0 million term loan with a syndicate of banks led by Wells Fargo due in March 2022.

Secured Property Mortgages

We maintain secured property mortgages with various life insurance companies.  These mortgages are usually fixed rate and can range from five to 30 years in maturity.  As of September 30, 2020, we had $489.6 million of secured property mortgages with a weighted average interest rate of 4.60%.

In July 2020, we retired $63.6 million of mortgages associated with three apartment communities at maturity and $72.2 million of mortgages associated with four apartment communities prior to their October 2020 maturities.

For more information regarding our debt capital resources, see Note 6 to the condensed consolidated financial statements included elsewhere in this Quarterly Report on Form 10-Q.

Off-Balance Sheet Arrangements

As of September 30, 2020 and 2019, we had an ownership interest in a limited liability company that owns one apartment community comprised of 269 units, located in Washington, D.C.  We also had ownership interests in two technology-focused limited partnerships as of September 30, 2020. Our interests in these investments are unconsolidated and are recorded using the equity method as we do not have a controlling interest.

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As of September 30, 2020 and 2019, we did not have any relationships, including those with unconsolidated entities or financial partnerships, for the purpose of facilitating off-balance sheet arrangements or other contractually narrow or limited purposes.  In addition, we do not engage in trading activities involving non-exchange traded contracts.  As such, we are not materially exposed to any financing, liquidity, market or credit risk that could arise if we had engaged in such relationships.  We do not have any relationships or transactions with persons or entities that derive benefits from their non-independent relationships with us or our related parties other than those disclosed in Note 12 to the consolidated financial statements included in our Annual Report on Form 10-K for the year ended December 31, 2019, filed with the SEC on February 20, 2020.

Insurance

We carry comprehensive general liability coverage on our apartment communities, with limits of liability we believe are customary within the multifamily apartment industry, to insure against liability claims and related defense costs. We also maintain insurance against the risk of direct physical damage to reimburse us on a replacement cost basis for costs incurred to repair or rebuild any property, including loss of rental income during the reconstruction period.

We renegotiated our insurance programs effective July 1, 2020. We believe that the current property and casualty insurance program in place provides appropriate insurance coverage for financial protection against insurable risks such that any insurable loss experienced that can be reasonably anticipated would not have a significant impact on our liquidity, financial position or results of operations.

Inflation

Our resident leases at our apartment communities allow, at the time of renewal, for adjustments in the rent payable thereunder, and thus may enable us to seek rent increases.  The majority of our leases are for one year or less. The short-term nature of these leases generally serves to reduce our risk to adverse effects of inflation.

Critical Accounting Policies and Estimates

Please refer to our Annual Report on Form 10-K for the year ended December 31, 2019, filed with the SEC on February 20, 2020, for discussions of our critical accounting policies.  During the nine months ended September 30, 2020, there were no material changes to these policies.  For more information on recent accounting pronouncements that could have a material impact on our condensed consolidated financial statements see Note 1 to the condensed consolidated financial statements included elsewhere in this Quarterly Report on Form 10-Q.

Item 3.Quantitative and Qualitative Disclosures About Market Risk.

Market risk includes risks that arise from changes in interest rates, foreign currency exchange rates, commodity prices, equity prices and other market changes that affect market sensitive instruments. Our primary market risk exposure is to changes in interest rates on our borrowings. As of September 30, 2020, 24.4% of our total market capitalization consisted of debt borrowings. Our interest rate risk objective is to limit the impact of interest rate fluctuations on earnings and cash flows and to lower our overall borrowing costs. To achieve this objective, we manage our exposure to fluctuations in market interest rates for borrowings through the use of fixed rate debt instruments and interest rate swaps, which mitigate our interest rate risk on a related financial instrument or on future refinancings. We use our best efforts to have our debt instruments mature across multiple years, which we believe limits our exposure to interest rate changes in any one year. We do not enter into derivative instruments for trading or other speculative purposes.  As of September 30, 2020, 99.2% of our outstanding debt was subject to fixed rates, and we did not have any outstanding interest rate swaps.  We regularly review interest rate exposure on outstanding borrowings in an effort to minimize the risk of interest rate fluctuations.  There have been no material changes in our market risk as disclosed in our Annual Report on Form 10-K for the year ended December 31, 2019, filed with the SEC on February 20, 2020.

Item 4.Controls and Procedures.

Mid-America Apartment Communities, Inc.

(a) Evaluation of Disclosure Controls and Procedures

MAA is required to maintain disclosure controls and procedures, within the meaning of Exchange Act Rules 13a-15 and 15d-15.  MAA’s management, with the participation of MAA’s Chief Executive Officer and Chief Financial Officer, carried out an evaluation of the effectiveness of MAA’s disclosure controls and procedures as of September 30, 2020.  Based on that evaluation, MAA’s Chief Executive Officer and Chief Financial Officer concluded that the disclosure controls and procedures were effective as of September 30, 2020 to ensure that information required to be disclosed by MAA in its Exchange Act filings is accurately recorded, processed, summarized and reported within the time periods specified in the SEC’s rules and forms and is accumulated and communicated to MAA’s management, including the Chief Executive Officer and Chief Financial Officer, as appropriate to allow timely decisions regarding required disclosure.

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(b) Changes in Internal Control over Financial Reporting

There was no change to MAA’s internal control over financial reporting, within the meaning of Exchange Act Rules 13a-15 and 15d-15, that occurred during the quarter ended September 30, 2020 that has materially affected, or is reasonably likely to materially affect, MAA’s internal control over financial reporting.

Mid-America Apartments, L.P.

(a) Evaluation of Disclosure Controls and Procedures

The Operating Partnership is required to maintain disclosure controls and procedures, within the meaning of Exchange Act Rules 13a-15 and 15d-15. Management of the Operating Partnership, with the participation of the Chief Executive Officer and Chief Financial Officer of MAA, as the general partner of the Operating Partnership, carried out an evaluation of the effectiveness of the Operating Partnership’s disclosure controls and procedures as of September 30, 2020.  Based on that evaluation, the Chief Executive Officer and Chief Financial Officer of MAA, as the general partner of the Operating Partnership, concluded that the disclosure controls and procedures were effective as of September 30, 2020 to ensure that information required to be disclosed by the Operating Partnership in its Exchange Act filings is accurately recorded, processed, summarized and reported within the time periods specified in the SEC’s rules and forms and is accumulated and communicated to the Operating Partnership’s management, including the Chief Executive Officer and Chief Financial Officer of MAA, as the general partner of the Operating Partnership, as appropriate to allow timely decisions regarding required disclosure.

(b) Changes in Internal Control over Financial Reporting

There was no change to the Operating Partnership’s internal control over financial reporting, within the meaning of Exchange Act Rules 13a-15 and 15d-15, that occurred during the quarter ended September 30, 2020 that has materially affected, or is reasonably likely to materially affect, the Operating Partnership’s internal control over financial reporting.

PART II – OTHER INFORMATION

Item 1. Legal Proceedings.

In June 2016, plaintiffs Cathi Cleven and Tara Cleven, on behalf of a purported class of plaintiffs, filed a complaint against MAA and the Operating Partnership in the United States District Court for the Western District of Texas, Austin Division. In January 2017, Areli Arellano and Joe L. Martinez joined the lawsuit as additional plaintiffs. The lawsuit alleges that we (but not Post Properties (see the description of the Brown class action lawsuit below)) charged late fees at our Texas properties that violate Section 92.019 of the Texas Property Code, or Section 92.019, which provides that a landlord may not charge a tenant a late fee for failing to pay rent unless, among other things, the fee is a reasonable estimate of uncertain damages to the landlord that are incapable of precise calculation and result from the late payment of rent.  The plaintiffs are seeking monetary damages and attorneys’ fees and costs. In September 2018, the District Court certified a class proposed by the plaintiffs.  Additionally, in September 2018, the District Court denied our motion for summary judgment and granted the plaintiffs’ motion for partial summary judgment. Because the District Court certified a class prior to granting the plaintiffs’ motion for partial summary judgment, the District Court’s ruling applies to the entire class. In October 2018, the Fifth Circuit Court of Appeals accepted our petition to review the District Court’s order granting class certification.  In September 2019, the Fifth Circuit Court of Appeals heard our oral arguments.  We intend to appeal the District Court’s order granting plaintiff’s motion for summary judgment to the Fifth Circuit Court of Appeals if permission to appeal is granted. We will continue to vigorously defend the action and pursue such appeals.

In April 2017, plaintiff Nathaniel Brown, on behalf of a purported class of plaintiffs, filed a complaint against the Operating Partnership, as the successor by merger to Post Properties’ primary operating partnership, and MAA in the United States District Court for the Western District of Texas, Austin Division. The lawsuit alleges that Post Properties (and, following the Post Properties merger in December 2016, the Operating Partnership) charged late fees at its Texas properties that violate Section 92.019. The plaintiffs are seeking monetary damages and attorneys’ fees and costs. In September 2018, the District Court certified a class proposed by the plaintiff. Additionally, in September 2018, the District Court denied our motion for summary judgment and granted the plaintiff’s motion for partial summary judgment. Because the District Court certified a class prior to granting the plaintiff’s motion for partial summary judgment, the District Court’s ruling applies to the entire class. In October 2018, the Fifth Circuit Court of Appeals accepted our petition to review the District Court’s order granting class certification.  In September 2019, the Fifth Circuit Court of Appeals heard our oral arguments.  We intend to appeal the District Court’s order granting plaintiff’s motion for summary judgment to the Fifth Circuit Court of Appeals if permission to appeal is granted. We will continue to vigorously defend the action and pursue such appeals.

In addition, we are subject to various other legal proceedings arising in the course of our business operations. While no assurances can be given, we do not currently believe that any of these other outstanding matters will have a material adverse effect on our financial condition, results of operations or cash flows in the event of a negative outcome.

39

Item 1A. Risk Factors.

Other than the risk factor set forth below, there have been no material changes to the risk factors that were discussed in Part I, Item 1A of our Annual Report on Form 10-K for the year ended December 31, 2019, filed with the SEC on February 20, 2020.

The COVID-19 pandemic and mitigation efforts to control the spread of the disease have and are expected to continue to materially impact our business, and our financial condition, results of operations and cash flows could be materially adversely affected by factors relating to COVID-19.

In March 2020, the World Health Organization characterized COVID-19 as a pandemic, and the President of the United States proclaimed that the COVID-19 outbreak in the United States constituted a national emergency. Extraordinary actions were taken by federal, state and local governmental authorities to combat the spread of COVID-19, including issuance of “stay-at-home” directives and similar mandates for many individuals to substantially restrict daily activities and for many businesses to curtail or cease normal operations.  These measures, while intended to protect human life, led to significantly reduced economic activity and a surge in unemployment throughout the United States, including the markets where our properties are located. In April 2020, the national unemployment rate reached its highest level since the Great Depression, and in June 2020, the National Bureau of Economic Research officially declared that the United States had fallen into a recession. The duration and severity of this economic slowdown remain uncertain. Although much of the Unites States economy has reopened, the pandemic is intensifying in most areas of the country, and many public health experts expect a COVID-19 surge in the coming weeks and months of fall and winter.  Reinstatement of directives and mandates requiring businesses to again curtail or cease normal operations remains a possibility, just as some jurisdictions rolled back reopening plans in the summer of 2020.  The federal emergency unemployment benefit expired at end of July 2020.  Negotiations continue with respect to an additional federal stimulus package, but it is uncertain whether and to what extent Congress will be able to pass such relief legislation.

Our ability to lease our apartments and collect rental revenues is dependent upon national, regional and local economic conditions, particularly unemployment levels and personal income levels.  As unemployment rises and incomes fall, fewer people, including both current and prospective residents, may be able to afford our apartment communities, and it may be difficult for some of our residents to make timely rental payments to us under their leases. To assist our residents who have lost wages or compensation due to the COVID-19 pandemic, we have offered these residents amendments to their leases that provided varying degrees of payment flexibility with respect to rent and waived late fees and interest charges under the original lease for rent that was deferred under the lease amendment.  Whether we extend similar arrangements to defer rent will be determined in the future taking into account facts and circumstances at that particular time.

The ongoing COVID-19 pandemic and restrictions intended to prevent its spread could have significant adverse impacts on our business, financial condition, results of operations and cash flows that are difficult to predict. Such adverse impacts will depend on, among other factors:

• our residents’ ability or willingness to pay rent in full on a timely basis;

• federal, state, local and industry-initiated efforts that may adversely affect the ability of landlords, including us, to collect rent and customary fees, adjust rental rates and enforce remedies for the failure to pay rent, such as the order issued in September 2020 by the Centers for Disease Control and Prevention, located within the U.S. Department of Health and Human Services, to temporarily halt residential evictions to prevent the further spread of COVID-19;

• our ability to renew leases or relet units on favorable terms or at all, including as a result of unfavorable economic and market conditions in those markets where our apartment communities are located;

• our ability to lease or relet units due to social distancing or other restrictions intended to prevent the spread of COVID-19 that may frustrate our leasing activities;

• our ability to successfully complete the lease up of properties in our lease up portfolio and attain expected rental and occupancy rates on the originally anticipated schedule due to social distancing or other restrictions intended to prevent the spread of COVID-19 that may frustrate our leasing activities;

• our ability to complete the construction of properties in our development portfolio due to social distancing or other restrictions intended to prevent the spread of COVID-19 that may slow down or temporarily halt our construction activities;

• our ability to continue our apartment unit redevelopment programs and attain increased rental rates for renovated or upgraded units due to social distancing or other restrictions intended to prevent the spread of COVID-19;

• the possibility that one or more of our apartment communities could become a cluster site for COVID-19 infections, which could negatively impact our reputation and occupancy levels and result in operational losses due to reduced rental demand;

• severe and prolonged disruption and instability in the financial markets, including the debt and equity capital markets, which have already experienced and may continue to experience significant volatility, or deteriorations in credit and financing conditions (or a refusal or failure of one or more lenders under our unsecured revolving credit facility to fund their respective financing commitment to us), which may affect our ability to access capital necessary to fund our business operations or refinance maturing debt on a timely basis, on attractive terms or at all, which would adversely affect our ability to meet liquidity and capital expenditure requirements;

40

• sustained stock market volatility that negatively affects the market price of our securities, including market conditions unrelated to our operating performance or prospects; and

• our ability to manage our business to the extent our management or personnel are impacted in significant numbers by the COVID-19 pandemic and are not willing, available or allowed to conduct work.

The ongoing COVID-19 pandemic and the current economic, financial and capital markets environment present material risks and uncertainties for us.  However, the fluidity of the situation precludes any prediction as to the ultimate impact COVID-19 will have on our business, financial condition, results of operation and cash flows, which will depend largely on future developments directly or indirectly relating to the duration and scope of the COVID-19 pandemic in the United States. To the extent the COVID-19 pandemic adversely affects our business, financial condition, results of operation and cash flows, it may also have the effect of heightening many of the other risks described in the “Risk Factors” section of our Annual Report on Form 10-K for the year ended December 31, 2019.

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

Purchases of Equity Securities

The following table reflects repurchases of shares of MAA’s common stock during the three months ended September 30, 2020:

Period	Total Number of Shares Purchased		Average Price Paid per Share		Total Number of Share Purchased as Part of Publicly Announced Plans or Programs		Maximum Number of Shares That May Yet be Purchased Under the Plans or Programs(1)
July 1, 2020 - July 31, 2020		—	$	—		—		4,000,000
August 1, 2020 - August 31, 2020		—	$	—		—		4,000,000
September 1, 2020 - September 30, 2020		—	$	—		—		4,000,000
Total		—				—		4,000,000

⁽¹⁾ This column reflects the number of shares of MAA’s common stock that are available for purchase under the 4.0 million share repurchase program authorized by MAA’s Board of Directors in December 2015.

Item 3. Defaults Upon Senior Securities.

Not applicable.

Item 4. Mine Safety Disclosures.

Not applicable.

Item 5. Other Information.

Not applicable.

41

Item 6.Exhibits.

(a) The following exhibits are filed as part of this report.

Exhibit Number	Exhibit Description
3.1	Composite Charter of Mid-America Apartment Communities, Inc. (Filed as Exhibit 3.1 to the Registrant’s Annual Report on Form 10-K filed on February 24, 2017 and incorporated herein by reference)
3.2	Fourth Amended and Restated Bylaws of Mid-America Apartment Communities, Inc., dated as of March 13, 2018 (filed as Exhibit 3.2(i) to the Registrant’s Current Report on Form 8-K filed on March 14, 2018 and incorporated herein by reference)
3.3	Composite Certificate of Limited Partnership of Mid-America Apartments, L.P. (filed as Exhibit 3.1 to the Registrant’s Quarterly Report on Form 10-Q filed on August 1, 2019 and incorporated herein by reference)
3.4	Third Amended and Restated Agreement of Limited Partnership of Mid-America Apartments, L.P. dated as of October 1, 2013 (filed as Exhibit 10.1 to the Registrant’s Current Report on Form 8-K filed on October 2, 2013 and incorporated herein by reference)
3.5	First Amendment to the Third Amended and Restated Agreement of Limited Partnership of Mid-America Apartments, L.P. (filed as Exhibit 10.1 to the Registrant’s Current Report on Form 8-K filed on November 10, 2016 and incorporated herein by reference)
4.1	Indenture, dated as of May 9, 2017, by and between Mid-America Apartments, L.P. and U.S. Bank National Association (filed as Exhibit 4.1 to the Registrant’s Current Report on Form 8-K filed on May 9, 2017 and incorporated herein by reference)
4.2	Fifth Supplemental Indenture, dated as of August 12, 2020, by and between Mid-America Apartments, L.P. and U.S. Bank National Association (filed as Exhibit 4.2 to the Registrant’s Current Report on Form 8-K filed on August 12, 2020 and incorporated herein by reference)
31.1	MAA Certification of Chief Executive Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002
31.2	MAA Certification of Chief Financial Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002
31.3	MAALP Certification of Chief Executive Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002
31.4	MAALP Certification of Chief Financial Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002
32.1	MAA Certification of Chief Executive Officer Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002
32.2	MAA Certification of Chief Financial Officer Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002
32.3	MAALP Certification of Chief Executive Officer Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002
32.4	MAALP Certification of 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	Interactive Data Files submitted pursuant to Rule 405 of Regulation S-T formatted in Inline eXtensible Business Reporting Language (Inline XBRL)
104	Cover Page Interactive Data File (formatted in Inline XBRL and contained in Exhibit 101)

42

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this Quarterly Report on Form 10-Q to be signed on its behalf by the undersigned thereunto duly authorized.

			MID-AMERICA APARTMENT COMMUNITIES, INC.
Date:	October 29, 2020	By:	/s/ A. Clay Holder
			A. Clay Holder
			Senior Vice President and Chief Accounting Officer
			(Duly Authorized Officer)

43

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this Quarterly Report on Form 10-Q to be signed on its behalf by the undersigned thereunto duly authorized.

			MID-AMERICA APARTMENTS, L.P.
		By:	Mid-America Apartment Communities, Inc., its general partner
Date:	October 29, 2020		/s/ A. Clay Holder
			A. Clay Holder
			Senior Vice President and Chief Accounting Officer
			(Duly Authorized Officer)

44

EX-31.1

EXHIBIT 31.1

CERTIFICATION

I, H. Eric Bolton, Jr., certify that:

1. I have reviewed this Quarterly Report on Form 10-Q of Mid-America Apartment Communities, Inc.;

2. Based on my knowledge, this Quarterly Report on Form 10-Q 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 Quarterly Report on Form 10-Q;

3. Based on my knowledge, the financial statements, and other financial information included in this Quarterly Report on Form 10-Q, 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 Quarterly Report on Form 10-Q;

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 Quarterly Report on Form 10-Q 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 Quarterly Report on Form 10-Q our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this Quarterly Report on Form 10-Q based on such evaluation; and

(d) Disclosed in this Quarterly Report on Form 10-Q 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:	October 29, 2020	/s/ H. Eric Bolton, Jr.
		H. Eric Bolton, Jr.
		Chairman of the Board of Directors
		Chief Executive Officer

EX-31.2

EXHIBIT 31.2

CERTIFICATION

I, Albert M. Campbell, III, certify that:

1. I have reviewed this Quarterly Report on Form 10-Q of Mid-America Apartment Communities, Inc.;

2. Based on my knowledge, this Quarterly Report on Form 10-Q 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 Quarterly Report on Form 10-Q;

3. Based on my knowledge, the financial statements, and other financial information included in this Quarterly Report on Form 10-Q, 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 Quarterly Report on Form 10-Q;

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 Quarterly Report on Form 10-Q 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 Quarterly Report on Form 10-Q our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this Quarterly Report on Form 10-Q based on such evaluation; and

(d) Disclosed in this Quarterly Report on Form 10-Q 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:	October 29, 2020	/s/ Albert M. Campbell, III
		Albert M. Campbell, III
		Executive Vice President and Chief Financial Officer

EX-31.3

EXHIBIT 31.3

CERTIFICATION

I, H. Eric Bolton, Jr., certify that:

1. I have reviewed this Quarterly Report on Form 10-Q of Mid-America Apartments, L.P.;

2. Based on my knowledge, this Quarterly Report on Form 10-Q 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 Quarterly Report on Form 10-Q;

3. Based on my knowledge, the financial statements, and other financial information included in this Quarterly Report on Form 10-Q, 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 Quarterly Report on Form 10-Q;

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 Quarterly Report on Form 10-Q 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 Quarterly Report on Form 10-Q our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this Quarterly Report on Form 10-Q based on such evaluation; and

(d) Disclosed in this Quarterly Report on Form 10-Q 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:	October 29, 2020	/s/ H. Eric Bolton, Jr.
		H. Eric Bolton, Jr.
		Chairman of the Board of Directors
		Chief Executive Officer of Mid-America Apartment Communities, Inc., general partner of Mid-America Apartments, L.P.

EX-31.4

EXHIBIT 31.4

CERTIFICATION

I, Albert M. Campbell, III, certify that:

1. I have reviewed this Quarterly Report on Form 10-Q of Mid-America Apartments, L.P.;

2. Based on my knowledge, this Quarterly Report on Form 10-Q 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 Quarterly Report on Form 10-Q;

3. Based on my knowledge, the financial statements, and other financial information included in this Quarterly Report on Form 10-Q, 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 Quarterly Report on Form 10-Q;

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 Quarterly Report on Form 10-Q 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 Quarterly Report on Form 10-Q our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this Quarterly Report on Form 10-Q based on such evaluation; and

(d) Disclosed in this Quarterly Report on Form 10-Q 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:	October 29, 2020	/s/ Albert M. Campbell, III
		Albert M. Campbell, III
		Executive Vice President and Chief Financial Officer of Mid-America Apartment Communities, Inc., general partner of Mid-America Apartments, L.P.

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 Mid-America Apartment Communities, Inc. (the “Company”) on Form 10-Q for the period ended September 30, 2020, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, H. Eric Bolton, Jr., President and Chief Executive Officer of the Company, certify, pursuant to 18 U.S.C. § 1350, as adopted pursuant to § 906 of the Sarbanes-Oxley Act of 2002, that:

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

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

Date:	October 29, 2020	/s/ H. Eric Bolton, Jr.
		H. Eric Bolton, Jr.
		Chairman of the Board of Directors
		Chief Executive Officer

EX-32.2

EXHIBIT 32.2

CERTIFICATION PURSUANT TO

18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Quarterly Report of Mid-America Apartment Communities, Inc. (the “Company”) on Form 10-Q for the period ended September 30, 2020, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Albert M. Campbell, III, Executive Vice President and Chief Financial Officer of the Company, certify, pursuant to 18 U.S.C. § 1350, as adopted pursuant to § 906 of the Sarbanes-Oxley Act of 2002, that:

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

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

Date:	October 29, 2020	/s/ Albert M. Campbell, III
		Albert M. Campbell, III
		Executive Vice President and Chief Financial Officer

EX-32.3

EXHIBIT 32.3

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 Mid-America Apartments, L.P. (the “Operating Partnership”) on Form 10-Q for the period ended September 30, 2020, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, H. Eric Bolton, Jr., President and Chief Executive Officer of Mid-America Apartment Communities, Inc., general partner of the Operating Partnership, certify, pursuant to 18 U.S.C. § 1350, as adopted pursuant to § 906 of the Sarbanes-Oxley Act of 2002, that:

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

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

Date:	October 29, 2020	/s/ H. Eric Bolton, Jr.
		H. Eric Bolton, Jr.
		Chairman of the Board of Directors
		Chief Executive Officer of Mid-America Apartment Communities, Inc., general partner of Mid-America Apartments, L.P.

EX-32.4

EXHIBIT 32.4

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 Mid-America Apartments, L.P. (the “Operating Partnership”) on Form 10-Q for the period ended September 30, 2020, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Albert M. Campbell, III, Executive Vice President and Chief Financial Officer of Mid-America Apartment Communities, Inc., general partner of the Operating Partnership, certify, pursuant to 18 U.S.C. § 1350, as adopted pursuant to § 906 of the Sarbanes-Oxley Act of 2002, that:

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

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

Date:	October 29, 2020	/s/ Albert M. Campbell, III
		Albert M. Campbell, III
		Executive Vice President and Chief Financial Officer of Mid-America Apartment Communities, Inc., general partner of Mid-America Apartments, L.P.

XML

Document and Entity Information - shares	9 Months Ended
	Sep. 30, 2020	Oct. 26, 2020
Document Information [Line Items]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Sep. 30, 2020
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	Q3
Entity Registrant Name	MID-AMERICA APARTMENT COMMUNITIES, INC.
Entity Central Index Key	0000912595
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		114,369,812
Entity Shell Company	false
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Emerging Growth Company	false
Entity Small Business	false
Entity File Number	001-12762
Entity Incorporation, State or Country Code	TN
Entity Tax Identification Number	62-1543819
Entity Address, Address Line One	6815 Poplar Ave
Entity Address, Address Line Two	Suite 500
Entity Address, City or Town	Germantown
Entity Address, State or Province	TN
Entity Address, Postal Zip Code	38138
City Area Code	901
Local Phone Number	682-6600
Document Quarterly Report	true
Document Transition Report	false
Common Stock [Member]
Document Information [Line Items]
Security Exchange Name	NYSE
Trading Symbol	MAA
Title of 12(b) Security	Common Stock
Cumulative Preferred Stock [Member]
Document Information [Line Items]
Security Exchange Name	NYSE
Trading Symbol	MAA*I
Title of 12(b) Security	8.50% Series I Cumulative Redeemable Preferred Stock
Limited Partner [Member]
Document Information [Line Items]
Entity Registrant Name	MID-AMERICA APARTMENTS, L.P.
Entity Central Index Key	0001581776
Entity Filer Category	Non-accelerated Filer
Entity Shell Company	false
Entity Current Reporting Status	Yes
Entity Emerging Growth Company	false
Entity Small Business	false
Entity File Number	333-190028-01
Entity Tax Identification Number	62-1543816
Entity Address, Address Line One	6815 Poplar Ave
Entity Address, Address Line Two	Suite 500
Entity Address, City or Town	Germantown
Entity Address, State or Province	TN
Entity Address, Postal Zip Code	38138
City Area Code	901
Local Phone Number	682-6600

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Condensed Consolidated Balance Sheets - USD ($) $ in Thousands		Sep. 30, 2020	Dec. 31, 2019
Assets
Land		$ 1,909,343	$ 1,905,757
Buildings and improvements and other		12,037,042	11,841,978
Development and capital improvements in progress		220,685	116,424
Real Estate Investment Property, at Cost		14,167,070	13,864,159
Less: Accumulated depreciation		(3,316,710)	(2,955,253)
Real Estate Investment Property, Net		10,850,360	10,908,906
Undeveloped land		34,548	34,548
Investment in real estate joint venture		43,467	43,674
Real estate assets, net		10,928,375	10,987,128
Cash and cash equivalents		18,407	20,476
Restricted cash		9,182	50,065
Other assets		172,740	172,781
Total assets		11,128,704	11,230,450
Liabilities and equity
Unsecured notes payable		3,939,425	3,828,201
Secured notes payable		486,169	626,397
Accrued expenses and other liabilities		570,014	472,262
Total liabilities		4,995,608	4,926,860
Redeemable common stock		13,841	14,131
Shareholders’ equity:
Preferred Stock, Value, Outstanding		9	9
Common stock	[1]	1,140	1,140
Additional paid-in capital		7,173,391	7,166,073
Accumulated distributions in excess of net income		(1,258,072)	(1,085,479)
Accumulated other comprehensive loss		(12,396)	(13,178)
Total MAA shareholders’ equity		5,904,072	6,068,565
Noncontrolling interests - Operating Partnership units		208,072	214,647
Total Company’s shareholders’ equity		6,112,144	6,283,212
Noncontrolling interests - consolidated real estate entities		7,111	6,247
Total equity		6,119,255	6,289,459
Total liabilities and equity		11,128,704	11,230,450
Liabilities:
Redeemable common stock		13,841	14,131
Operating Partnership capital:
Accumulated other comprehensive loss		(12,396)	(13,178)
Noncontrolling interests - consolidated real estate entities		7,111	6,247
Limited Partner [Member]
Assets
Land		1,909,343	1,905,757
Buildings and improvements and other		12,037,042	11,841,978
Development and capital improvements in progress		220,685	116,424
Real Estate Investment Property, at Cost		14,167,070	13,864,159
Less: Accumulated depreciation		(3,316,710)	(2,955,253)
Real Estate Investment Property, Net		10,850,360	10,908,906
Investment in real estate joint venture		43,467	43,674
Real estate assets, net		10,928,375	10,987,128
Cash and cash equivalents		18,407	20,476
Restricted cash		9,182	50,065
Other assets		172,740	172,781
Total assets		11,128,704	11,230,450
Undeveloped land		34,548	34,548
Liabilities and equity
Unsecured notes payable		3,939,425	3,828,201
Secured notes payable		486,169	626,397
Accrued expenses and other liabilities		570,014	472,262
Total liabilities		4,995,627	4,926,879
Due to general partner		19	19
Redeemable common stock		13,841	14,131
Shareholders’ equity:
Accumulated other comprehensive loss		(12,774)	(13,584)
Noncontrolling interests - consolidated real estate entities		7,111	6,247
Liabilities:
Redeemable common stock		13,841	14,131
Operating Partnership capital:
Preferred Units, Preferred Partners' Capital Accounts		66,840	66,840
General Partners' Capital Account	[2]	5,849,987	6,015,290
Limited Partners' Capital Account	[2]	208,072	214,647
Accumulated other comprehensive loss		(12,774)	(13,584)
Total operating partners’ capital		6,112,125	6,283,193
Noncontrolling interests - consolidated real estate entities		7,111	6,247
Total equity		6,119,236	6,289,440
Total liabilities and equity		$ 11,128,704	$ 11,230,450

[1] ^{Number of shares issued and outstanding represent total shares of common stock regardless of classification on the Condensed Consolidated Balance Sheets. The number of shares classified as redeemable common stock on the Condensed Consolidated Balance Sheets as of September 30, 2020 and December 31, 2019 are 119,374 and 107,162, respectively.}

[2] Number of units outstanding represents total OP Units regardless of classification on the Condensed Consolidated Balance Sheets. The number of units classified as redeemable common units on the Condensed Consolidated Balance Sheets as of September 30, 2020 and December 31, 2019 are 119,374 and 107,162, respectively.

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Condensed Consolidated Balance Sheets (Parenthetical) - $ / shares	9 Months Ended		12 Months Ended
	Sep. 30, 2020		Dec. 31, 2019
Common stock, par value per share	$ 0.01		$ 0.01
Common stock, shares authorized	145,000,000		145,000,000
Common stock, shares issued	114,369,812		114,246,393
Common stock, shares outstanding	114,369,812		114,246,393
Preferred Stock, Par or Stated Value Per Share	$ 0.01		$ 0.01
Preferred Stock, Shares Authorized	20,000,000		20,000,000
Preferred Stock, Dividend Rate, Percentage	8.50%		8.50%
Preferred Stock, Shares Issued	867,846		867,846
Preferred Stock, Shares Outstanding	867,846		867,846
Preferred Stock, Liquidation Preference Per Share	$ 50.00	[1]	$ 50.00
Redeemable stock, shares issued and outstanding	119,374		107,162
General Partners' Capital Account, Units Outstanding	114,369,812
Limited Partners' Capital Account, Units Outstanding	4,058,258
Limited Partner [Member]
Redeemable stock, shares issued and outstanding	119,374		107,162
General Partners' Capital Account, Units Outstanding	114,369,812		114,246,393
Limited Partners' Capital Account, Units Outstanding	4,058,258		4,067,174
Preferred Units, Issued	867,846		867,846
Preferred Units, Outstanding	867,846		867,846

[1] The total liquidation preference for the outstanding preferred stock is $43.4 million.

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Condensed Consolidated Statements of Operations - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Revenues:
Rental and other property revenues	$ 423,199	$ 415,632	$ 1,254,323	$ 1,224,200
Expenses:
Operating expenses, excluding real estate taxes and insurance	105,108	100,319	292,031	286,284
Real estate taxes and insurance	64,706	59,220	188,426	176,774
Depreciation and amortization	127,679	124,684	381,257	371,417
Total property operating expenses	297,493	284,223	861,714	834,475
Property management expenses	12,691	13,899	39,064	41,195
General and administrative expenses	11,360	10,225	35,181	32,960
Interest expense	41,010	44,513	126,610	136,149
(Gain) loss on sale of depreciable real estate assets	(20)	(1,000)	7	(987)
Gain on sale of non-depreciable real estate assets	(1,366)		(995)	(9,260)
Other non-operating (income) expense	(242)	(18,800)	13,647	(23,494)
Income before income tax expense	62,273	82,572	179,095	213,162
Income tax expense	(665)	(1,491)	(2,532)	(2,814)
Income from continuing operations before real estate joint venture activity	61,608	81,081	176,563	210,348
Income from real estate joint venture	428	378	1,153	1,210
Net income	62,036	81,459	177,716	211,558
Net income attributable to noncontrolling interests	2,126	2,814	6,096	7,336
Net income available for shareholders	59,910	78,645	171,620	204,222
Dividends to MAA Series I preferred shareholders	922	922	2,766	2,766
Net income available for MAA common shareholders	$ 58,988	$ 77,723	$ 168,854	$ 201,456
Earnings per common share - basic:
Net income available for MAA common shareholders	$ 0.52	$ 0.68	$ 1.48	$ 1.77
Earnings per common share - diluted:
Net income available for MAA common shareholders	$ 0.52	$ 0.68	$ 1.47	$ 1.77
Net income available for MAA common shareholders	$ 58,988	$ 77,723	$ 168,854	$ 201,456
Limited Partner [Member]
Revenues:
Rental and other property revenues	423,199	415,632	1,254,323	1,224,200
Expenses:
Operating expenses, excluding real estate taxes and insurance	105,108	100,319	292,031	286,284
Real estate taxes and insurance	64,706	59,220	188,426	176,774
Depreciation and amortization	127,679	124,684	381,257	371,417
Total property operating expenses	297,493	284,223	861,714	834,475
Property management expenses	12,691	13,899	39,064	41,195
General and administrative expenses	11,360	10,225	35,181	32,960
Interest expense	41,010	44,513	126,610	136,149
(Gain) loss on sale of depreciable real estate assets	(20)	(1,000)	7	(987)
Gain on sale of non-depreciable real estate assets	(1,366)		(995)	(9,260)
Other non-operating (income) expense	(242)	(18,800)	13,647	(23,494)
Income before income tax expense	62,273	82,572	179,095	213,162
Income tax expense	(665)	(1,491)	(2,532)	(2,814)
Income from continuing operations before real estate joint venture activity	61,608	81,081	176,563	210,348
Income from real estate joint venture	428	378	1,153	1,210
Net income	62,036	81,459	177,716	211,558
Dividends to preferred unitholders	922	922	2,766	2,766
Net income available for shareholders	$ 61,114	$ 80,537	$ 174,950	$ 208,792
Earnings per common share - basic:
Net income available for MAA common shareholders	$ 0.52	$ 0.68	$ 1.48	$ 1.77
Net income available for MAALP common unitholders	0.52	0.68	1.48	1.77
Earnings per common share - diluted:
Net income available for MAA common shareholders	0.52	0.68	1.48	1.77
Net income available for MAALP common unitholders	$ 0.52	$ 0.68	$ 1.48	$ 1.77

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Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Net income	$ 62,036	$ 81,459	$ 177,716	$ 211,558
Other comprehensive income (loss):
Unrealized loss from derivative instruments		(5,562)		(13,444)
Adjustment for net losses (gains) reclassified to net income from derivative instruments	279	(411)	810	(1,734)
Total comprehensive income	62,315	75,486	178,526	196,380
Less: Comprehensive income attributable to noncontrolling interests	(2,136)	(2,619)	(6,124)	(6,816)
Comprehensive income	60,179	72,867	172,402	189,564
Limited Partner [Member]
Net income	62,036	81,459	177,716	211,558
Other comprehensive income (loss):
Unrealized loss from derivative instruments		(5,562)		(13,444)
Adjustment for net losses (gains) reclassified to net income from derivative instruments	279	(411)	810	(1,734)
Comprehensive income	$ 62,315	$ 75,486	$ 178,526	$ 196,380

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Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019
Cash flows from operating activities:
Net income	$ 177,716	$ 211,558
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	381,938	372,210
Loss (gain) on sale of depreciable real estate assets	7	(987)
Gain on sale of non-depreciable real estate assets	(995)	(9,260)
Loss (gain) on embedded derivative in preferred shares	14,603	(19,592)
Stock compensation expense	12,532	11,550
Amortization of debt issuance costs, discounts and premiums	3,595	4,706
Net change in operating accounts and other operating activities	54,489	51,353
Net cash provided by operating activities	643,885	621,538
Cash flows from investing activities:
Purchases of real estate and other assets	(5,004)	(22,860)
Capital improvements, development and other	(288,183)	(219,670)
Distributions from real estate joint ventures	207	365
Contributions to affiliates	(3,450)	(4,500)
Proceeds from disposition of real estate assets	3,278	15,984
Net cash used in investing activities	(293,152)	(230,681)
Cash flows from financing activities:
Proceeds from revolving credit facility	245,000	565,000
Repayments of revolving credit facility	(245,000)	(1,105,000)
Net (repayments of) proceeds from commercial paper	(35,000)	200,000
Proceeds from notes payable	447,593	760,003
Principal payments on notes payable	(440,222)	(468,635)
Payment of deferred financing costs	(4,196)	(11,530)
Distributions to noncontrolling interests	(11,993)	(11,813)
Distributions paid on common shares/units	(342,983)	(328,239)
Distributions paid on preferred shares/units	(2,766)	(2,766)
Net change in other financing activities	(4,118)	3,132
Net cash used in financing activities	(393,685)	(399,848)
Net decrease in cash, cash equivalents and restricted cash	(42,952)	(8,991)
Cash, cash equivalents and restricted cash, beginning of period	70,541	51,673
Cash, cash equivalents and restricted cash, end of period	27,589	42,682
Reconciliation of cash, cash equivalents and restricted cash:
Cash and cash equivalents	18,407	25,826
Restricted cash	9,182	16,856
Cash, cash equivalents and restricted cash, end of period	27,589	42,682
Supplemental disclosure of cash flow information:
Interest paid	109,527	108,249
Income taxes paid	2,534	2,509
Supplemental disclosure of noncash investing and financing activities:
Conversion of OP Units to shares of common stock	471	1,993
Accrued construction in progress	41,443	14,652
Interest capitalized	4,783	1,847
Limited Partner [Member]
Cash flows from operating activities:
Net income	177,716	211,558
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	381,938	372,210
Loss (gain) on sale of depreciable real estate assets	7	(987)
Gain on sale of non-depreciable real estate assets	(995)	(9,260)
Loss (gain) on embedded derivative in preferred shares	14,603	(19,592)
Stock compensation expense	12,532	11,550
Amortization of debt issuance costs, discounts and premiums	3,595	4,706
Net change in operating accounts and other operating activities	54,489	51,353
Net cash provided by operating activities	643,885	621,538
Cash flows from investing activities:
Purchases of real estate and other assets	(5,004)	(22,860)
Capital improvements, development and other	(288,183)	(219,670)
Distributions from real estate joint ventures	207	365
Contributions to affiliates	(3,450)	(4,500)
Proceeds from disposition of real estate assets	3,278	15,984
Net cash used in investing activities	(293,152)	(230,681)
Cash flows from financing activities:
Proceeds from revolving credit facility	245,000	565,000
Repayments of revolving credit facility	(245,000)	(1,105,000)
Net (repayments of) proceeds from commercial paper	(35,000)	200,000
Proceeds from notes payable	447,593	760,003
Principal payments on notes payable	(440,222)	(468,635)
Payment of deferred financing costs	(4,196)	(11,530)
Distributions paid on common shares/units	(354,976)	(340,052)
Distributions paid on preferred shares/units	(2,766)	(2,766)
Net change in other financing activities	(4,118)	3,132
Net cash used in financing activities	(393,685)	(399,848)
Net decrease in cash, cash equivalents and restricted cash	(42,952)	(8,991)
Cash, cash equivalents and restricted cash, beginning of period	70,541	51,673
Cash, cash equivalents and restricted cash, end of period	27,589	42,682
Reconciliation of cash, cash equivalents and restricted cash:
Cash and cash equivalents	18,407	25,826
Restricted cash	9,182	16,856
Cash, cash equivalents and restricted cash, end of period	27,589	42,682
Supplemental disclosure of cash flow information:
Interest paid	109,527	108,249
Income taxes paid	2,534	2,509
Supplemental disclosure of noncash investing and financing activities:
Accrued construction in progress	41,443	14,652
Interest capitalized	$ 4,783	$ 1,847

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Basis of Presentation and Principles of Consolidation and Significant Accounting Policies

9 Months Ended

Sep. 30, 2020

Consolidation And Basis Of Presentation And Significant Accounting Policies [Abstract]

Basis of Presentation and Principles of Consolidation and Significant Accounting Policies

1.Basis of Presentation and Principles of Consolidation and Significant Accounting Policies

Unless the context otherwise requires, all references to the “Company” refer collectively to Mid-America Apartment Communities, Inc., together with its consolidated subsidiaries, including Mid-America Apartments, L.P.  Unless the context otherwise requires, all references to “MAA” refer only to Mid-America Apartment Communities, Inc., and not any of its consolidated subsidiaries.  Unless the context otherwise requires, the references to the “Operating Partnership” or “MAALP” refer to Mid-America Apartments, L.P., together with its consolidated subsidiaries.  “Common stock” refers to the common stock of MAA and, unless the context otherwise requires, “shareholders” refers to the holders of shares of MAA’s common stock.  The common units of limited partnership interests in the Operating Partnership are referred to as “OP Units,” and the holders of the OP Units are referred to as “common unitholders”.

As of September 30, 2020, MAA owned 114,369,812 OP Units (or 96.6% of the total number of OP Units).  MAA conducts substantially all of its business and holds substantially all of its assets, directly or indirectly, through the Operating Partnership, and by virtue of its ownership of the OP Units and being the Operating Partnership’s sole general partner, MAA has the ability to control all of the day-to-day operations of the Operating Partnership.

Management believes combining the notes to the condensed consolidated financial statements of MAA and the Operating Partnership results in the following benefits:

• enhances a readers’ understanding of MAA and the Operating Partnership by enabling the reader to view the business as a whole in the same manner that management views and operates the business;

• eliminates duplicative disclosure and provides a more streamlined and readable presentation since a substantial portion of the disclosure applies to both MAA and the Operating Partnership; and

• creates time and cost efficiencies through the preparation of one combined set of notes instead of two separate sets.

MAA, an S&P 500 company, is a multifamily-focused, self-administered and self-managed real estate investment trust, or REIT.  Management operates MAA and the Operating Partnership as one business. The management of the Company is comprised of individuals who are officers of MAA and employees of the Operating Partnership.  Management believes it is important to understand the few differences between MAA and the Operating Partnership in the context of how MAA and the Operating Partnership operate as a consolidated company.  MAA and the Operating Partnership are structured as an umbrella partnership REIT, or UPREIT. MAA’s interest in the Operating Partnership entitles MAA to share in cash distributions from, and in the profits and losses of, the Operating Partnership in proportion to MAA’s percentage interest therein and entitles MAA to vote on substantially all matters requiring a vote of the partners.  MAA’s only material asset is its ownership of limited partnership interests in the Operating Partnership (other than cash held by MAA from time to time); therefore, MAA’s primary function is acting as the sole general partner of the Operating Partnership, issuing public equity from time to time and guaranteeing certain debt of the Operating Partnership. The Operating Partnership holds, directly or indirectly, all of the Company’s real estate assets.  Except for net proceeds from public equity issuances by MAA, which are contributed to the Operating Partnership in exchange for limited partnership interests, the Operating Partnership generates the capital required by the business through the Operating Partnership’s operations, direct or indirect incurrence of indebtedness and issuance of OP Units.

The presentations of MAA’s shareholders’ equity and the Operating Partnership’s capital are the principal areas of difference between the condensed consolidated financial statements of MAA and those of the Operating Partnership.  MAA’s shareholders’ equity may include shares of preferred stock, shares of common stock, additional paid-in capital, cumulative earnings, cumulative distributions, noncontrolling interest, treasury shares, accumulated other comprehensive income and redeemable common stock.  The Operating Partnership’s capital may include common capital and preferred capital of the general partner (MAA), limited partners’ common capital and preferred capital, noncontrolling interest, accumulated other comprehensive income and redeemable common units.  Holders of OP Units (other than MAA) may require the Operating Partnership to redeem their OP Units from time to time, in which case the Operating Partnership may, at its option, pay the redemption price either in cash (in an amount per OP Unit equal, in general, to the average closing price of MAA’s common stock on the New York Stock Exchange, or NYSE, over a specified period prior to the redemption date) or by delivering one share of MAA’s common stock (subject to adjustment under specified circumstances) for each OP Unit so redeemed.

Organization of Mid-America Apartment Communities, Inc.

The Company owns, operates, acquires and selectively develops apartment communities primarily located in the Southeast, Southwest and Mid-Atlantic regions of the United States.  As of September 30, 2020, the Company owned and operated 299 apartment communities through the Operating Partnership and its subsidiaries and had an ownership interest in one apartment community through an unconsolidated real estate joint venture.  As of September 30, 2020, the Company had six development communities under construction totaling 1,940 apartment units once complete.  Total expected costs for the six development projects are $459.5 million, of which $264.0 million had been incurred through September 30, 2020.  MAA expects to complete one of these developments in

2020, four developments in 2021 and one development in 2022. As of September 30, 2020, thirty-two of the Company’s apartment communities included retail components with approximately 630,000 square feet of gross leasable space.  In addition, as of September 30, 2020, the Company had four commercial properties with approximately 260,000 square feet of combined gross leasable area.  The Company’s apartment communities and commercial properties were located across 16 states and the District of Columbia as of September 30, 2020.

Basis of Presentation and Principles of Consolidation

The accompanying condensed consolidated financial statements have been prepared by the Company’s management in accordance with United States generally accepted accounting principles, or GAAP, and applicable rules and regulations of the Securities and Exchange Commission, or the SEC.  The condensed consolidated financial statements of MAA presented herein include the accounts of MAA, the Operating Partnership and all other subsidiaries in which MAA has a controlling financial interest. MAA owns, directly or indirectly, approximately 80% to 100% of all consolidated subsidiaries, including the Operating Partnership.  The condensed consolidated financial statements of MAALP presented herein include the accounts of MAALP and all other subsidiaries in which MAALP has a controlling financial interest.  MAALP owns, directly or indirectly, 80% to 100% of all consolidated subsidiaries.  In management’s opinion, all adjustments necessary for a fair presentation of the condensed consolidated financial statements have been included, and all such adjustments were of a normal recurring nature.  All significant intercompany accounts and transactions have been eliminated in consolidation.

The Company invests in entities which may qualify as variable interest entities, or VIEs, and MAALP is considered a VIE.  A VIE is a legal entity in which the equity investors lack sufficient equity at risk for the entity to finance its activities without additional subordinated financial support or, as a group, the holders of the equity investment at risk lack the power to direct the activities of a legal entity as well as the obligation to absorb its expected losses or the right to receive its expected residual returns.  MAALP is classified as a VIE, because the limited partners lack substantive kick-out rights and substantive participating rights.  The Company consolidates all VIEs for which it is the primary beneficiary and uses the equity method to account for investments that qualify as VIEs but for which it is not the primary beneficiary.  In determining whether the Company is the primary beneficiary of a VIE, management considers both qualitative and quantitative factors, including, but not limited to, those activities that most significantly impact the VIE’s economic performance and which party controls such activities.  The Company uses the equity method of accounting for its investments in entities for which the Company exercises significant influence, but does not have the ability to exercise control.  The factors considered in determining whether the Company has the ability to exercise control include ownership of voting interests and participatory rights of investors (see “Investments in Unconsolidated Affiliates” below).

Reclassifications

In order to present comparative financial statements, certain reclassifications have been made to the Condensed Consolidated Statements of Operations. Prior year amounts have been changed to conform to the Company’s current year presentation.  As a result of these reclassifications, $1.3 million and $2.3 million of expenses previously reported as “General and administrative expenses” for the three and nine months ended September 30, 2019, respectively, have been reclassified to the “Other non-operating (income) expense” line item of the Condensed Consolidated Statements of Operations in this report.

Noncontrolling Interests

As of September 30, 2020, the Company had two types of noncontrolling interests with respect to its consolidated subsidiaries, (1) noncontrolling interests related to the common unitholders of its Operating Partnership and (2) noncontrolling interests related to its consolidated real estate entities.  The noncontrolling interests relating to the limited partnership interests in the Operating Partnership are owned by the holders of the Class A OP Units. MAA is the sole general partner of the Operating Partnership and holds all of the outstanding Class B OP Units. Net income (after allocations to preferred ownership interests) is allocated to MAA and the noncontrolling interests based on their respective ownership percentages of the Operating Partnership. Issuance of additional Class A OP Units or Class B OP Units changes the ownership percentage of both the noncontrolling interests and MAA. The issuance of Class B OP Units generally occurs when MAA issues common stock and the issuance proceeds are contributed to the Operating Partnership in exchange for Class B OP Units equal to the number of shares of MAA’s common stock issued. At each reporting period, the allocation between total MAA shareholders’ equity and noncontrolling interests is adjusted to account for the change in the respective percentage ownership of the underlying equity of the Operating Partnership. MAA’s Board of Directors established economic rights in respect to each Class A OP Unit that were equivalent to the economic rights in respect to each share of MAA common stock. See Note 9 for additional details.

The noncontrolling interests relating to the Company’s two consolidated real estate entities are owned by private real estate companies that are generally responsible for the development and construction of the apartment communities that are owned through the consolidated real estate entities with a noncontrolling interest.  The entities were determined to be VIE’s with the Company designated as the primary beneficiary.  As a result, the accounts of the entities are consolidated by the Company.  As of September 30, 2020, the consolidated assets and liabilities of the Company’s consolidated real estate entities with a noncontrolling interest were $96.0 million and $10.2 million, respectively.  As of December 31, 2019, the consolidated assets and liabilities of the Company’s consolidated real estate entities with a noncontrolling interest were $46.0 million and $3.2 million, respectively.

Investments in Unconsolidated Affiliates

The Company uses the equity method to account for its investments in a real estate joint venture and two technology-focused limited partnerships that qualify as a VIE. Management determined the Company is not the primary beneficiary in any of these investments but does have the ability to exert significant influence over the operations and financial policies of the real estate joint venture and considers its investment in the limited partnerships to be more than minor. The Company’s investment in the real estate joint venture was $43.5 million and $43.7 million as of September 30, 2020 and December 31, 2019, respectively.

As of September 30, 2020 and December 31, 2019, the Company’s investments in the technology-focused limited partnerships were $21.3 million and $13.1 million, respectively, and are included in “Other assets” in the accompanying Condensed Consolidated Balance Sheets. As of September 30, 2020, the Company was committed until February 2025 to make additional capital contributions totaling $21.3 million if and when called by the general partners of the limited partnerships.

Fair Value Measurements

The Company applies the guidance in Accounting Standards Codification (“ASC”) Topic 820, Fair Value Measurements and Disclosures, to the valuation of real estate assets recorded at fair value, to its impairment valuation analysis of real estate assets, to its disclosure of the fair value of financial instruments, principally indebtedness and to its derivative financial instruments.  Fair value disclosures required under ASC Topic 820 as well as the Company’s derivative accounting policies are summarized in Note 7 utilizing the following hierarchy:

Level 1 - Quoted prices in active markets for identical assets or liabilities that are accessible at the measurement date.

Level 2 - Inputs other than quoted prices that are observable for the asset or liability, either directly or indirectly.

Level 3 - Unobservable inputs for the assets or liability.

Revenue Recognition

The Company primarily leases multifamily residential apartments to residents under operating leases generally due on a monthly basis with terms of approximately one year or less.  Rental revenues are recognized in accordance with ASC Topic 842, Leases, using a method that represents a straight-line basis over the term of the lease. In addition, in circumstances where a lease incentive is provided to tenants, the incentive is recognized as a reduction of rental revenues on a straight-line basis over the reasonably assured lease term.  Rental revenues represent approximately 93% of the Company’s total revenues and include gross rents charged less adjustments for concessions and bad debt.  Approximately 6% of the Company’s total revenues represent non-lease reimbursable property revenues from its residents for utility reimbursements, which are generally recognized and due on a monthly basis as residents obtain control of the service over the term of the lease.  The remaining 1% of the Company’s total revenues represents other non-lease property revenues primarily driven by nonrefundable fees and commissions.

In accordance with ASC Topic 842, rental revenues and non-lease reimbursable property revenues meet the criteria to be aggregated into a single lease component and are reported on a combined basis in the line item “Rental revenues”, as presented in the disaggregation of the Company’s revenues in Note 11.  Other non-lease property revenues are accounted for in accordance with ASC Topic 606, Revenue from Contracts with Customers, which requires revenue recognized outside of the scope of ASC Topic 842 to be recognized when a customer obtains control of promised goods or services in an amount that reflects the consideration the entity expects to receive in exchange for those goods or services. Other non-lease property revenues are reported in the line item “Other property revenues”, as presented in the disaggregation of the Company’s revenues in Note 11.

Leases

The Company is the lessee under certain ground, office, equipment and other operational leases, all of which are accounted for as operating leases in accordance with ASC Topic 842. The Company recognizes a right-of-use asset for the right to use the underlying asset for all leases where the Company is the lessee with terms of more than twelve months, and a related lease liability for the obligation to make lease payments. Expenses related to leases determined to be operating leases are recognized on a straight-line basis.  As of September 30, 2020 and December 31, 2019, right-of-use assets recorded within “Other assets” totaled $50.1 million and $53.8 million, respectively, and related lease obligations recorded within “Accrued expenses and other liabilities” totaled $32.2 million and $33.1 million, respectively, in the Condensed Consolidated Balance Sheets.  As of September 30, 2020, the Company’s operating leases had a weighted average remaining lease term of approximately 31 years and a weighted average discount rate of approximately 4.4%. Lease expense recognized for the three and nine months ended September 30, 2020 and 2019 was immaterial to the Company. Cash paid for amounts included in the measurement of operating lease liabilities during the nine months ended September 30, 2020 and 2019 was also immaterial.

Recently Adopted Accounting Pronouncements

In June 2016, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) No. 2016-13, Measurement of Credit Losses on Financial Instruments, which amends the current approach to estimate credit losses on certain financial assets, including trade and other receivables, available-for-sale securities and other financial instruments.  The ASU requires entities to estimate a lifetime expected credit loss for most financial instruments, including trade receivables.  Subsequent changes in the valuation allowance are recorded in current earnings and reversal of previous losses is permitted.  In November 2018, the FASB issued an amendment excluding operating lease receivables accounted for under ASC Topic 842 from the scope of the new credit losses standard. The Company adopted the standard on January 1, 2020. The adoption of ASU No. 2016-13 did not result in significant changes in the accounting for the Company’s approach to estimate credit losses on financial assets, as substantially all of the Company’s financial assets are operating lease receivables.   

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Earnings Per Common Share of MAA

9 Months Ended

Sep. 30, 2020

Earnings Per Common Share Of M A A [Abstract]

Earnings per Common Share of MAA

2.Earnings per Common Share of MAA

Basic earnings per share is computed by dividing net income available to MAA common shareholders by the weighted average number of common shares outstanding during the period.  All outstanding unvested restricted share awards contain rights to non-forfeitable dividends and participate in undistributed earnings with shareholders and, accordingly, are considered participating securities that are included in the two-class method of computing basic earnings per share.  Both the unvested restricted shares and other potentially dilutive common shares, and the related impact to earnings, are considered when calculating earnings per share on a diluted basis with diluted earnings per share being the more dilutive of the treasury stock or two-class methods.  OP Units are included in dilutive earnings per share calculations when the units are dilutive to earnings per share.

For the three and nine months ended September 30, 2020 and 2019, MAA’s diluted earnings per share was computed using the treasury stock method as presented below (dollars and shares in thousands, except per share amounts):

	Three months ended September 30,						Nine months ended September 30,
	2020			2019			2020			2019
Calculation of Earnings per common share - basic
Net income	$	62,036		$	81,459		$	177,716		$	211,558
Net income attributable to noncontrolling interests		(2,126	)		(2,814	)		(6,096	)		(7,336	)
Unvested restricted stock (allocation of earnings)		(78	)		(118	)		(229	)		(302	)
Preferred dividends		(922	)		(922	)		(2,766	)		(2,766	)
Net income available for MAA common shareholders, adjusted	$	58,910		$	77,605		$	168,625		$	201,154
Weighted average common shares - basic		114,216			113,877			114,177			113,814
Earnings per common share - basic	$	0.52		$	0.68		$	1.48		$	1.77
Calculation of Earnings per common share - diluted
Net income	$	62,036		$	81,459		$	177,716		$	211,558
Net income attributable to noncontrolling interests (1)		(2,126	)		(2,814	)		(6,096	)		(7,336	)
Preferred dividends		(922	)		(922	)		(2,766	)		(2,766	)
Net income available for MAA common shareholders, adjusted	$	58,988		$	77,723		$	168,854		$	201,456
Weighted average common shares - basic		114,216			113,877			114,177			113,814
Effect of dilutive securities		252			260			310			238
Weighted average common shares - diluted		114,468			114,137			114,487			114,052
Earnings per common share - diluted	$	0.52		$	0.68		$	1.47		$	1.77

^{(1) For the three and nine months ended September 30, 2020 and 2019, 4.1 million OP Units and their related income are not included in the diluted earnings per share calculations as they are not dilutive.}

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Earnings Per OP Unit of MAALP

9 Months Ended

Sep. 30, 2020

Earnings Per Share [Abstract]

Earnings per OP Unit of MAALP

3.Earnings per OP Unit of MAALP

Basic earnings per common unit is computed by dividing net income available for common unitholders by the weighted average number of OP Units outstanding during the period.  All outstanding unvested restricted unit awards contain rights to non-forfeitable distributions and participate in undistributed earnings with common unitholders and, accordingly, are considered participating securities that are included in the two-class method of computing basic earnings per common unit.  Diluted earnings per common unit reflects the potential dilution that could occur if securities or other contracts to issue OP Units were exercised or converted into OP Units.  Both the unvested restricted unit awards and other potentially dilutive common units, and the related impact to earnings, are considered when calculating earnings per common unit on a diluted basis with diluted earnings per common unit being the more dilutive of the treasury stock or two-class methods.

For the three and nine months ended September 30, 2020 and 2019, MAALP’s diluted earnings per common unit was computed using the treasury stock method as presented below (dollars and units in thousands, except per unit amounts):

	Three months ended September 30,						Nine months ended September 30,
	2020			2019			2020			2019
Calculation of Earnings per common unit - basic
Net income	$	62,036		$	81,459		$	177,716		$	211,558
Unvested restricted stock (allocation of earnings)		(78	)		(118	)		(229	)		(302	)
Preferred unit distributions		(922	)		(922	)		(2,766	)		(2,766	)
Net income available for MAALP common unitholders, adjusted	$	61,036		$	80,419		$	174,721		$	208,490
Weighted average common units - basic		118,274			117,958			118,238			117,910
Earnings per common unit - basic	$	0.52		$	0.68		$	1.48		$	1.77
Calculation of Earnings per common unit - diluted
Net income	$	62,036		$	81,459		$	177,716		$	211,558
Preferred unit distributions		(922	)		(922	)		(2,766	)		(2,766	)
Net income available for MAALP common unitholders, adjusted	$	61,114		$	80,537		$	174,950		$	208,792
Weighted average common units - basic		118,274			117,958			118,238			117,910
Effect of dilutive securities		252			260			310			238
Weighted average common units - diluted		118,526			118,218			118,548			118,148
Earnings per common unit - diluted	$	0.52		$	0.68		$	1.48		$	1.77

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MAA Equity

9 Months Ended

Sep. 30, 2020

M A A Equity [Abstract]

MAA Equity

4.MAA Equity

Changes in MAA’s total equity and its components for the three months ended September 30, 2020 and 2019 were as follows (dollars in thousands):

	Mid-America Apartment Communities, Inc. Shareholders’ Equity
	Preferred Stock		Common Stock		Additional Paid-In Capital		Accumulated Distributions in Excess of Net Income			Accumulated Other Comprehensive Loss			Noncontrolling Interests - Operating Partnership			Noncontrolling Interests - Consolidated Real Estate Entities		Total Equity
EQUITY BALANCE JUNE 30, 2020	$	9	$	1,140	$	7,168,886	$	(1,202,536	)	$	(12,665	)	$	209,894		$	6,849	$	6,171,577
Net income		—		—		—		59,910			—			2,126			—		62,036
Other comprehensive income - derivative instruments		—		—		—		—			269			10			—		279
Issuance and registration of common shares		—		—		33		—			—			—			—		33
Shares issued in exchange for common units		—		—		21		—			—			(21	)		—		—
Redeemable stock fair market value adjustment		—		—		—		(155	)		—			—			—		(155	)
Adjustment for noncontrolling interests in    Operating Partnership		—		—		71		—			—			(71	)		—		—
Amortization of unearned compensation		—		—		4,380		—			—			—			—		4,380
Dividends on preferred stock		—		—		—		(922	)		—			—			—		(922	)
Dividends on common stock ($1.00 per share)		—		—		—		(114,369	)		—			—			—		(114,369	)
Dividends on noncontrolling interests units    ($1.00 per unit)		—		—		—		—			—			(3,866	)		—		(3,866	)
Contribution from noncontrolling interest		—		—		—		—			—			—			262		262
EQUITY BALANCE SEPTEMBER 30, 2020	$	9	$	1,140	$	7,173,391	$	(1,258,072	)	$	(12,396	)	$	208,072		$	7,111	$	6,119,255

	Mid-America Apartment Communities, Inc. Shareholders’ Equity
	Preferred Stock		Common Stock		Additional Paid-In Capital			Accumulated Distributions in Excess of Net Income			Accumulated Other Comprehensive Loss			Noncontrolling Interests - Operating Partnership			Noncontrolling Interests - Consolidated Real Estate Entities		Total Equity
EQUITY BALANCE JUNE 30, 2019	$	9	$	1,138	$	7,146,076		$	(1,086,665	)	$	(9,092	)	$	215,404		$	5,656	$	6,272,526
Net income		—		—		—			78,645			—			2,814			—		81,459
Other comprehensive loss - derivative instruments		—		—		—			—			(5,778	)		(195	)		—		(5,973	)
Issuance and registration of common shares		—		—		140			—			—			—			—		140
Exercise of stock options		—		—		(204	)		—			—			—			—		(204	)
Shares issued in exchange for common units		—		—		836			—			—			(836	)		—		—
Redeemable stock fair market value adjustment		—		—		—			(1,269	)		—			—			—		(1,269	)
Adjustment for noncontrolling interests in    Operating Partnership		—		—		(272	)		—			—			272			—		—
Amortization of unearned compensation		—		—		3,313			—			—			—			—		3,313
Dividends on preferred stock		—		—		—			(922	)		—			—			—		(922	)
Dividends on common stock ($0.96 per share)		—		—		—			(109,503	)		—			—			—		(109,503	)
Dividends on noncontrolling interests units    ($0.96 per unit)		—		—		—			—			—			(3,912	)		—		(3,912	)
Contribution from noncontrolling interest		—		—		—			—			—			—			955		955
EQUITY BALANCE SEPTEMBER 30, 2019	$	9	$	1,138	$	7,149,889		$	(1,119,714	)	$	(14,870	)	$	213,547		$	6,611	$	6,236,610

Changes in MAA’s total equity and its components for the nine months ended September 30, 2020 and 2019 were as follows (dollars in thousands):

	Mid-America Apartment Communities, Inc. Shareholders’ Equity
	Preferred Stock		Common Stock		Additional Paid-In Capital			Accumulated Distributions in Excess of Net Income			Accumulated Other Comprehensive Loss			Noncontrolling Interests - Operating Partnership			Noncontrolling Interests - Consolidated Real Estate Entities		Total Equity
EQUITY BALANCE DECEMBER 31, 2019	$	9	$	1,140	$	7,166,073		$	(1,085,479	)	$	(13,178	)	$	214,647		$	6,247	$	6,289,459
Net income		—		—		—			171,620			—			6,096			—		177,716
Other comprehensive income - derivative instruments		—		—		—			—			782			28			—		810
Issuance and registration of common shares		—		—		(344	)		—			—			—			—		(344	)
Shares repurchased and retired		—		—		(5,657	)		—			—			—			—		(5,657	)
Exercise of stock options		—		—		71			—			—			—			—		71
Shares issued in exchange for common units		—		—		471			—			—			(471	)		—		—
Redeemable stock fair market value adjustment		—		—		—			1,659			—			—			—		1,659
Adjustment for noncontrolling interests in    Operating Partnership		—		—		244			—			—			(244	)		—		—
Amortization of unearned compensation		—		—		12,533			—			—			—			—		12,533
Dividends on preferred stock		—		—		—			(2,766	)		—			—			—		(2,766	)
Dividends on common stock ($3.00 per share)		—		—		—			(343,106	)		—			—			—		(343,106	)
Dividends on noncontrolling interests units    ($3.00 per unit)		—		—		—			—			—			(11,984	)		—		(11,984	)
Contribution from noncontrolling interest		—		—		—			—			—			—			864		864
EQUITY BALANCE SEPTEMBER 30, 2020	$	9	$	1,140	$	7,173,391		$	(1,258,072	)	$	(12,396	)	$	208,072		$	7,111	$	6,119,255

	Mid-America Apartment Communities, Inc. Shareholders’ Equity
	Preferred Stock		Common Stock		Additional Paid-In Capital			Accumulated Distributions in Excess of Net Income			Accumulated Other Comprehensive Loss			Noncontrolling Interests - Operating Partnership			Noncontrolling Interests - Consolidated Real Estate Entities		Total Equity
EQUITY BALANCE DECEMBER 31, 2018	$	9	$	1,136	$	7,138,170		$	(989,263	)	$	(212	)	$	220,043		$	2,306	$	6,372,189
Net income		—		—		—			204,222			—			7,336			—		211,558
Other comprehensive loss - derivative instruments		—		—		—			—			(14,658	)		(520	)		—		(15,178	)
Issuance and registration of common shares		—		2		748			—			—			—			—		750
Shares repurchased and retired		—		—		(3,724	)		—			—			—			—		(3,724	)
Exercise of stock options		—		—		1,036			—			—			—			—		1,036
Shares issued in exchange for common units		—		—		1,993			—			—			(1,993	)		—		—
Shares issued in exchange for redeemable stock		—		—		575			—			—			—			—		575
Redeemable stock fair market value adjustment		—		—		—			(3,455	)		—			—			—		(3,455	)
Adjustment for noncontrolling interests in    Operating Partnership		—		—		(459	)		—			—			459			—		—
Amortization of unearned compensation		—		—		11,550			—			—			—			—		11,550
Dividends on preferred stock		—		—		—			(2,766	)		—			—			—		(2,766	)
Dividends on common stock ($2.88 per share)		—		—		—			(328,452	)		—			—			—		(328,452	)
Dividends on noncontrolling interests units    ($2.88 per unit)		—		—		—			—			—			(11,778	)		—		(11,778	)
Contribution from noncontrolling interest		—		—		—			—			—			—			4,305		4,305
EQUITY BALANCE SEPTEMBER 30, 2019	$	9	$	1,138	$	7,149,889		$	(1,119,714	)	$	(14,870	)	$	213,547		$	6,611	$	6,236,610

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MAALP Capital

9 Months Ended

Sep. 30, 2020

M A A L P Capital [Abstract]

MAALP Capital

5.MAALP Capital

Changes in MAALP’s total capital and its components for the three months ended September 30, 2020 and 2019 were as follows (dollars in thousands):

	Mid-America Apartments, L.P. Unitholders’ Capital
	Limited Partners			General Partner			Preferred Units			Accumulated Other Comprehensive Loss			Noncontrolling Interests- Consolidated Real Estate Entities		Total Partnership Capital
CAPITAL BALANCE JUNE 30, 2020	$	209,894		$	5,901,028		$	66,840		$	(13,053	)	$	6,849	$	6,171,558
Net income		2,126			58,988			922			—			—		62,036
Other comprehensive income - derivative instruments		—			—			—			279			—		279
Issuance of units		—			33			—			—			—		33
General partnership units issued in exchange for limited    partnership units		(21	)		21			—			—			—		—
Redeemable units fair market value adjustment		—			(155	)		—			—			—		(155	)
Adjustment for limited partners’ capital at redemption value		(61	)		61			—			—			—		—
Amortization of unearned compensation		—			4,380			—			—			—		4,380
Distributions to preferred unitholders		—			—			(922	)		—			—		(922	)
Distributions to common unitholders ($1.00 per unit)		(3,866	)		(114,369	)		—			—			—		(118,235	)
Contribution from noncontrolling interest		—			—			—			—			262		262
CAPITAL BALANCE SEPTEMBER 30, 2020	$	208,072		$	5,849,987		$	66,840		$	(12,774	)	$	7,111	$	6,119,236

	Mid-America Apartments, L.P. Unitholders’ Capital
	Limited Partners			General Partner			Preferred Units			Accumulated Other Comprehensive Loss			Noncontrolling Interests - Consolidated Real Estate Entities		Total Partnership Capital
CAPITAL BALANCE JUNE 30, 2019	$	215,404		$	5,993,973		$	66,840		$	(9,366	)	$	5,656	$	6,272,507
Net income		2,814			77,723			922			—			—		81,459
Other comprehensive loss - derivative instruments		—			—			—			(5,973	)		—		(5,973	)
Issuance of units		—			140			—			—			—		140
Exercise of unit options		—			(204	)		—			—			—		(204	)
General partnership units issued in exchange for limited    partnership units		(836	)		836			—			—			—		—
Redeemable units fair market value adjustment		—			(1,269	)		—			—			—		(1,269	)
Adjustment for limited partners’ capital at redemption value		77			(77	)		—			—			—		—
Amortization of unearned compensation		—			3,313			—			—			—		3,313
Distributions to preferred unitholders		—			—			(922	)		—			—		(922	)
Distributions to common unitholders ($0.96 per unit)		(3,912	)		(109,503	)		—			—			—		(113,415	)
Contribution from noncontrolling interest		—			—			—			—			955		955
CAPITAL BALANCE SEPTEMBER 30, 2019	$	213,547		$	5,964,932		$	66,840		$	(15,339	)	$	6,611	$	6,236,591

Changes in MAALP’s total capital and its components for the nine months ended September 30, 2020 and 2019 were as follows (dollars in thousands):

	Mid-America Apartments, L.P. Unitholders’ Capital
	Limited Partners			General Partner			Preferred Units			Accumulated Other Comprehensive Loss			Noncontrolling Interests- Consolidated Real Estate Entities		Total Partnership Capital
CAPITAL BALANCE DECEMBER 31, 2019	$	214,647		$	6,015,290		$	66,840		$	(13,584	)	$	6,247	$	6,289,440
Net income		6,096			168,854			2,766			—			—		177,716
Other comprehensive income - derivative instruments		—			—			—			810			—		810
Issuance of units		—			(344	)		—			—			—		(344	)
Units repurchased and retired		—			(5,657	)		—			—			—		(5,657	)
Exercise of unit options		—			71			—			—			—		71
General partnership units issued in exchange for limited    partnership units		(471	)		471			—			—			—		—
Redeemable units fair market value adjustment		—			1,659			—			—			—		1,659
Adjustment for limited partners’ capital at redemption value		(216	)		216			—			—			—		—
Amortization of unearned compensation		—			12,533			—			—			—		12,533
Distributions to preferred unitholders		—			—			(2,766	)		—			—		(2,766	)
Distributions to common unitholders ($3.00 per unit)		(11,984	)		(343,106	)		—			—			—		(355,090	)
Contribution from noncontrolling interest		—			—			—			—			864		864
CAPITAL BALANCE SEPTEMBER 30, 2020	$	208,072		$	5,849,987		$	66,840		$	(12,774	)	$	7,111	$	6,119,236

	Mid-America Apartments, L.P. Unitholders’ Capital
	Limited Partners			General Partner			Preferred Units			Accumulated Other Comprehensive Loss			Noncontrolling Interests - Consolidated Real Estate Entities		Total Partnership Capital
CAPITAL BALANCE DECEMBER 31, 2018	$	220,043		$	6,083,142		$	66,840		$	(161	)	$	2,306	$	6,372,170
Net income		7,336			201,456			2,766			—			—		211,558
Other comprehensive loss - derivative instruments		—			—			—			(15,178	)		—		(15,178	)
Issuance of units		—			750			—			—			—		750
Units repurchased and retired		—			(3,724	)		—			—			—		(3,724	)
Exercise of unit options		—			1,036			—			—			—		1,036
General partnership units issued in exchange for limited    partnership units		(1,993	)		1,993			—			—			—		—
Units issued in exchange for redeemable units		—			575			—			—			—		575
Redeemable units fair market value adjustment		—			(3,455	)		—			—			—		(3,455	)
Adjustment for limited partners’ capital at redemption value		(61	)		61			—			—			—		—
Amortization of unearned compensation		—			11,550			—			—			—		11,550
Distributions to preferred unitholders		—			—			(2,766	)		—			—		(2,766	)
Distributions to common unitholders ($2.88 per unit)		(11,778	)		(328,452	)		—			—			—		(340,230	)
Contribution from noncontrolling interest		—			—			—			—			4,305		4,305
CAPITAL BALANCE SEPTEMBER 30, 2019	$	213,547		$	5,964,932		$	66,840		$	(15,339	)	$	6,611	$	6,236,591

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Borrowings

9 Months Ended

Sep. 30, 2020

Notes To Financial Statements [Abstract]

Borrowings

6.Borrowings

The following table summarizes the Company’s outstanding debt as of September 30, 2020 (dollars in thousands):

	Balance			Weighted Average Effective Rate			Weighted Average Contract Maturity
Unsecured debt
Variable rate revolving credit facility	$	—			—			—
Variable rate commercial paper program		35,000			0.2	%	10/2/2020
Fixed rate senior notes		3,922,000			3.6	%	1/27/2027
Debt issuance costs, discounts, premiums and fair market value adjustments		(17,575	)
Total unsecured debt	$	3,939,425			3.6	%
Secured debt
Fixed rate property mortgages	$	489,595			4.6	%	12/31/2041
Debt issuance costs and fair market value adjustments		(3,426	)
Total secured debt	$	486,169			4.6	%
Total outstanding debt	$	4,425,594			3.7	%

Unsecured Revolving Credit Facility

In May 2019, MAALP entered into a $1.0 billion unsecured revolving credit facility with a syndicate of banks led by Wells Fargo Bank, National Association, or Wells Fargo, and fourteen other banks, which is referred to as the Credit Facility.  The Credit Facility replaced MAALP’s previous unsecured revolving credit facility, and it includes an expansion option up to $1.5 billion.  The Credit Facility bears an interest rate of the London Interbank Offered Rate, or LIBOR, plus a spread of 0.75% to 1.45% based on an investment grade pricing grid. The Credit Facility matures in May 2023 with an option to extend for two additional six-month periods.  As of September 30, 2020, there was no outstanding balance under the Credit Facility, while $3.4 million of capacity was used to support outstanding letters of credit.

Unsecured Commercial Paper

In May 2019, MAALP established an unsecured commercial paper program whereby MAALP may issue unsecured commercial paper notes with varying maturities not to exceed 397 days up to a maximum aggregate principal amount outstanding of $500.0 million.  As of September 30, 2020, MAALP had $35.0 million outstanding under the commercial paper program. For the three months ended September 30, 2020, the average daily borrowings outstanding under the commercial paper program were $118.0 million.  

Unsecured Senior Notes

As of September 30, 2020, MAALP had $3.7 billion of publicly issued unsecured senior notes outstanding and $222.0 million of privately placed unsecured senior notes outstanding.  The unsecured senior notes had maturities at issuance ranging from ten to twelve years, with a weighted average of 6.3 years remaining until maturity as of September 30, 2020.

In August 2020, MAALP publicly issued $450.0 million in aggregate principal amount of unsecured senior notes, maturing February 2031 with a coupon rate of 1.700% per annum, or the 2031 Notes.  The purchase price paid by the purchasers was 99.465% of the principal amount.  The 2031 Notes are general unsecured senior obligations of MAALP and rank equally in right of payment with all other senior unsecured indebtedness of MAALP.  Interest on the 2031 Notes is payable on February 15 and August 15 of each year, beginning on February 15, 2021.  The net proceeds of the offering, after deducting the original issue discount, underwriting commissions and expenses of approximately $5.3 million in the aggregate, were $444.7 million.  The 2031 Notes have an effective interest rate of 1.76% and have been reflected net of discount and debt issuance costs in the Condensed Consolidated Balance Sheets as of September 30, 2020.  

Unsecured Term Loan

In August 2020, MAALP retired a $300.0 million term loan with a syndicate of banks led by Wells Fargo due in March 2022.    

Secured Property Mortgages

As of September 30, 2020, MAALP had $489.6 million of fixed rate conventional property mortgages with a weighted average interest rate of 4.60% and a weighted average maturity in 2041.

In July 2020, MAALP retired $63.6 million of mortgages associated with three apartment communities at maturity and $72.2 million of mortgages associated with four apartment communities prior to their October 2020 maturities.

Guarantees

As of September 30, 2020, MAA fully and unconditionally guaranteed $222.0 million of the privately placed unsecured senior notes issued by MAALP.

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Financial Instruments and Derivatives

9 Months Ended

Sep. 30, 2020

Fair Value Disclosures [Abstract]

Financial Instruments and Derivatives

7.Financial Instruments and Derivatives

Financial Instruments Not Carried at Fair Value

Cash and cash equivalents, restricted cash and accrued expenses and other liabilities are carried at amounts that reasonably approximate their fair value due to their short term nature.

Fixed rate notes payable as of September 30, 2020 and December 31, 2019, totaled $4.4 billion and $4.1 billion, respectively, and had estimated fair values of $4.9 billion and $4.5 billion (excluding prepayment penalties) as of September 30, 2020 and December 31, 2019, respectively. The carrying values of variable rate debt (excluding the effect of interest rate swap agreements) as of September 30, 2020 and December 31, 2019, totaled $35.0 million and $370.0 million, respectively, and had estimated fair values of $35.0 million and $370.8 million (excluding prepayment penalties) as of September 30, 2020 and December 31, 2019, respectively. The fair values of fixed rate debt are determined by using the present value of future cash outflows discounted with the applicable current market rate plus a credit spread. The fair values of variable rate debt are determined using the stated variable rate plus the

current market credit spread. The variable rates reset every 30 to 90 days, and management concluded these rates reasonably estimate current market rates.

Financial Instruments Measured at Fair Value on a Recurring Basis

As of September 30, 2020, the Company had one outstanding series of cumulative redeemable preferred stock, which is referred to as the MAA Series I preferred stock (see Note 8).  The Company has recognized a derivative asset related to the redemption feature embedded in the MAA Series I preferred stock. The derivative asset is valued using widely accepted valuation techniques, including a discounted cash flow analysis in which the perpetual value of the preferred shares is compared to the value of the preferred shares assuming the call option is exercised, with the value of the bifurcated call option as the difference between the two values. The analysis reflects the contractual terms of the redeemable preferred shares, which are redeemable at the Company’s option beginning on October 1, 2026 and at the redemption price of $50.00 per share. The Company uses various inputs in the analysis, including trading data available on the preferred shares, coupon yields on preferred stock issuances from REITs with similar credit ratings as MAA and treasury rates to determine the fair value of the bifurcated call option.

The redemption feature embedded in the MAA Series I preferred stock is reported as a derivative asset in “Other assets” in the accompanying Condensed Consolidated Balance Sheets and is adjusted to its fair value at each reporting date, with a corresponding non-cash adjustment to “Other non-operating (income) expense” in the accompanying Condensed Consolidated Statements of Operations.  As a result of adjustments of non-cash expense recorded to reflect the change in fair value of the derivative asset during the nine months ended September 30, 2020, the fair value of the embedded derivative asset decreased to $21.9 million as of September 30, 2020 as compared to $36.5 million as of December 31, 2019.

Periodically, the Company uses interest rate swaps to add stability to interest expense and to manage, or hedge, its exposure to interest rate movements associated with anticipated future debt transactions and variable rate debt. The fair values of interest rate swaps are determined using the market standard methodology of netting the discounted future fixed cash receipts (or payments) and the discounted expected variable cash payments (or receipts). The variable cash payments (or receipts) are based on an expectation of future interest rates (forward curves) derived from observable market interest rate curves.

Management incorporates credit valuation adjustments to appropriately reflect both its nonperformance risk and the respective counterparty’s nonperformance risk in the fair value measurements. In adjusting the fair value of the derivative contracts for the effect of nonperformance risk, the Company considers the impact of netting and any applicable credit enhancements, such as collateral postings, thresholds, mutual puts and guarantees. Based on guidance issued by the FASB, the Company made an accounting policy election to measure the credit risk of its derivative financial instruments that are subject to master netting agreements on a net basis by counterparty portfolio.

As of September 30, 2020, the Company did not have any outstanding interest rate derivatives designated as cash flow hedges of interest rate risk. The fair value of interest rate derivative contracts designated as hedging instruments recorded in “Other assets” in the accompanying Condensed Consolidated Balance Sheets as of December 31, 2019 was $0.1 million.  The Company’s interest rate derivative contracts designated as hedging instruments and their related gains and losses are reported in “Net change in operating accounts and other operating activities” in the accompanying Condensed Consolidated Statements of Cash Flows.

The Company has determined the majority of the inputs used to value its outstanding debt and its embedded derivative fall within Level 2 of the fair value hierarchy, and as a result, the fair value valuation of its debt and embedded derivative held as of September 30, 2020 and December 31, 2019 were classified as Level 2 in the fair value hierarchy.

Cash Flow Hedges of Interest Rate Risk

The changes in the fair value of derivatives designated and that qualify as cash flow hedges is recorded in “Accumulated other comprehensive loss” and is subsequently reclassified into earnings in the period that the hedged forecasted transaction affects earnings. As long as a hedging instrument is designated and the results of the effectiveness testing support that the instrument qualifies for hedge accounting treatment, there is no periodic measurement or recognition of ineffectiveness. Rather, the full impact of hedge gains and losses is recognized in the period in which hedged transactions impact earnings, regardless of whether or not economic mismatches exist in the hedging relationship.  Amounts reported in “Accumulated other comprehensive loss” related to derivatives designated as qualifying cash flow hedges are reclassified to interest expense as interest payments are made on the Company’s variable rate or fixed rate debt. During the next twelve months, the Company estimates that an additional $1.1 million will be reclassified to earnings as an increase to “Interest expense”, which primarily represents the difference between the fixed interest rate swap payments and the projected variable interest rate swap receipts.

Tabular Disclosure of the Effect of Derivative Instruments on the Condensed Consolidated Statements of Operations

The tables below present the effect of the Company’s derivative financial instruments on the Condensed Consolidated Statements of Operations for the three and nine months ended September 30, 2020 and 2019 (dollars in thousands):

Derivatives in Cash Flow Hedging Relationships	Loss Recognized in OCI on Derivative					Location of (Loss) Gain Reclassified from Accumulated	Net (Loss) Gain Reclassified from Accumulated OCL into Interest Expense(1)
Three months ended September 30,	2020		2019			OCL into Income	2020			2019
Interest rate contracts	$	—	$	(5,562	)	Interest expense	$	(279	)	$	411
Nine months ended September 30,
Interest rate contracts	$	—	$	(13,444	)	Interest expense	$	(810	)	$	1,734

^{(1) See the Condensed Consolidated Statements of Comprehensive Income for changes in accumulated other comprehensive loss as these changes are presented net of the allocation to noncontrolling interests.}

Derivatives Not Designated as Hedging Instruments	Location of Gain (Loss) Recognized in	Gain (Loss) Recognized in Earnings on Derivative
Three months ended September 30,	Income on Derivative	2020			2019
Preferred stock embedded derivative	Other non-operating (income) expense	$	1,342		$	15,522
Nine months ended September 30,
Preferred stock embedded derivative	Other non-operating (income) expense	$	(14,603	)	$	19,592

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Shareholders' Equity of MAA

9 Months Ended

Sep. 30, 2020

Shareholders Equity Of M A A [Abstract]

Shareholders' Equity of MAA

8.Shareholders’ Equity of MAA

As of September 30, 2020, 114,369,812 shares of common stock of MAA and 4,058,258 OP Units (excluding the OP Units held by MAA) were issued and outstanding, representing a total of 118,428,070 common shares and units.  As of September 30, 2019, 114,065,859 shares of common stock of MAA and 4,074,277 OP Units (excluding the OP Units held by MAA) were issued and outstanding, representing a total of 118,140,136 common shares and units. Options to purchase 19,845 shares of MAA’s common stock were outstanding as of September 30, 2020, compared to 45,390 outstanding options as of September 30, 2019. During the nine months ended September 30, 2020 and 2019, MAA issued 918 common shares and 24,256 common shares, respectively, related to the exercise of stock options. These exercises resulted in net proceeds of $0.1 million and $1.0 million, respectively.

Preferred Stock

As of September 30, 2020, MAA had one outstanding series of cumulative redeemable preferred stock which has the following characteristics:

Description	Outstanding Shares		Liquidation Preference(1)		Optional Redemption Date	Redemption Price(2)		Stated Dividend Yield			Approximate Dividend Rate
Series I		867,846	$	50.00	10/1/2026	$	50.00		8.50	%	$	4.25

^{(1) The total liquidation preference for the outstanding preferred stock is $43.4 million.}

^{(2) The redemption price is the price at which the preferred stock is redeemable, at MAA’s option, for cash.}

See Note 7 for details of the valuation of the derivative asset related to the redemption feature embedded in the MAA Series I preferred stock.  

At-the-Market Share Offering Program

The Company has entered into separate distribution agreements with each of J.P. Morgan Securities LLC, BMO Capital Markets Corp. and KeyBanc Capital Markets Inc. to establish an at-the-market share offering program, or ATM program, allowing MAA to sell shares of its common stock from time to time into the existing market at current market prices or through negotiated transactions.  Under the ATM program, MAA has the authority to issue up to an aggregate of 4.0 million shares of its common stock, at such times to be determined by MAA.  The ATM program currently has a maturity of September 2021.  MAA has no obligation to issue shares through the ATM program.

During the nine months ended September 30, 2020 and 2019, MAA did not sell any shares of common stock under its ATM program.  As of September 30, 2020, 3.9 million shares remained issuable under the ATM program.

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Partners' Capital of MAALP

9 Months Ended

Sep. 30, 2020

Partners Capital Notes [Abstract]

Partners' Capital of MAALP

9.Partners’ Capital of MAALP

Common units of limited partnership interests in MAALP are represented by OP Units.  As of September 30, 2020, there were 118,428,070 OP Units outstanding, 114,369,812, or 96.6%, of which represent Class B OP Units (common units issued to or held by MAALP’s general partner or any of its subsidiaries), which were owned by MAA, MAALP’s general partner.  The remaining 4,058,258 OP Units were Class A OP Units owned by Class A limited partners.  As of September 30, 2019, there were 118,140,136 OP Units outstanding, 114,065,859, or 96.6%, of which were owned by MAA and 4,074,277 of which were owned by the Class A limited partners.

MAA, as the sole general partner of MAALP, has full, complete and exclusive discretion to manage and control the business of MAALP subject to the restrictions specifically contained within MAALP’s agreement of limited partnership, or the Partnership Agreement.  Unless otherwise stated in the Partnership Agreement, this power includes, but is not limited to, acquiring, leasing or disposing of any real property; constructing buildings and making other improvements to properties owned; borrowing money, modifying or extinguishing current borrowings, issuing evidence of indebtedness and securing such indebtedness by mortgage, deed of trust, pledge or other lien on MAALP’s assets; and distribution of MAALP’s cash or other assets in accordance with the Partnership Agreement.  MAA can generally, at its sole discretion, issue and redeem OP Units and determine the consideration to be received or the redemption price to be paid, as applicable.  The general partner may delegate these and other powers granted if the general partner remains in supervision of the designee.

Under the Partnership Agreement, MAALP may issue Class A OP Units and Class B OP Units.  Class A OP Units are any OP Units other than Class B OP Units, while Class B OP Units are those issued to or held by MAALP’s general partner or any of its subsidiaries.  In general, the limited partners do not have the power to participate in the management or control of MAALP’s business except in limited circumstances, including changes in the general partner and protective rights if the general partner acts outside of the provisions provided in the Partnership Agreement.  The transferability of Class A OP Units is also limited by the Partnership Agreement.

Net income of MAALP (after allocations to preferred ownership interests) is allocated to the general partner and limited partners based on their respective ownership percentages of MAALP.  Issuance or redemption of additional Class A OP Units or Class B OP Units changes the relative ownership percentage of the partners.  The issuance of Class B OP Units generally occurs when MAA issues common stock and the proceeds from that issuance are contributed to MAALP in exchange for the issuance to MAA of a number of OP Units equal to the number of shares of common stock issued.  Likewise, if MAA repurchases or redeems outstanding shares of common stock, MAALP generally redeems an equal number of Class B OP Units with similar terms held by MAA for a redemption price equal to the purchase price of those shares of common stock.  At each reporting period, the allocation between general partner capital and limited partner capital is adjusted to account for the change in the respective percentage ownership of the underlying capital of MAALP.  Holders of the Class A OP Units may require MAA to redeem their Class A OP Units, in which case MAA may, at its option, pay the redemption price either in cash (in an amount per Class A OP Unit equal, in general, to the average closing price of MAA’s common stock on the NYSE over a specified period prior to the redemption date) or by delivering one share of MAA common stock (subject to adjustment under specified circumstances) for each Class A OP Unit so redeemed.

As of September 30, 2020, a total of 4,058,258 Class A OP Units were outstanding and redeemable for 4,058,258 shares of MAA common stock, with an approximate value of $470.6 million, based on the closing price of MAA’s common stock on September 30, 2020 of $115.95 per share.  As of September 30, 2019, a total of 4,074,277 Class A OP Units were outstanding and redeemable for 4,074,277 shares of MAA common stock, with an approximate value of $529.7 million, based on the closing price of MAA’s common stock on September 30, 2019 of $130.01 per share.  MAALP pays the same per unit distributions in respect to the OP Units as the per share dividends MAA pays in respect to its common stock.

As of September 30, 2020, MAALP had one outstanding series of cumulative redeemable preferred units, or the MAALP Series I preferred units.  The MAALP Series I preferred units have the same characteristics as the MAA Series I preferred stock described in Note 8.  As of September 30, 2020, 867,846 units of the MAALP Series I preferred units were outstanding.

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Commitments and Contingencies

9 Months Ended

Sep. 30, 2020

Loss Contingency [Abstract]

Commitments and Contingencies

10.Commitments and Contingencies

Leases

The Company’s leases include a ground lease expiring in 2074 related to one of its apartment communities and an office lease expiring in 2028 related to its corporate headquarters.  Both leases contain stated rent increases that generally compensate for the impact of inflation.  The Company also has other commitments related to immaterial office and equipment operating leases.

The table below reconciles undiscounted cash flows for each of the first five years and total of the remaining years to the operating lease obligations recorded on the Condensed Consolidated Balance Sheets as of September 30, 2020 (in thousands):

	Operating Leases
2020	$	707
2021		2,854
2022		2,885
2023		2,875
2024		2,853
Thereafter		65,863
Total minimum lease payments		78,037
Net present value adjustments		(45,856	)
Operating lease obligations	$	32,181

Legal Proceedings

In June 2016, plaintiffs Cathi Cleven and Tara Cleven, on behalf of a purported class of plaintiffs, filed a complaint against MAA and the Operating Partnership in the United States District Court for the Western District of Texas, Austin Division.  In January 2017, Areli Arellano and Joe L. Martinez joined the lawsuit as additional plaintiffs.  The lawsuit alleges that the Company (but not Post Properties (see the description of the Brown class action lawsuit below)) charged late fees at its Texas properties that violate Section 92.019 of the Texas Property Code, or Section 92.019, which provides that a landlord may not charge a tenant a late fee for failing to pay rent unless, among other things, the fee is a reasonable estimate of uncertain damages to the landlord that are incapable of precise calculation and result from the late payment of rent.  The plaintiffs are seeking monetary damages and attorneys’ fees and costs.  In September 2018, the District Court certified a class proposed by the plaintiffs. Additionally, in September 2018, the District Court denied the Company’s motion for summary judgment and granted the plaintiffs’ motion for partial summary judgment.  Because the District Court certified a class prior to granting the plaintiffs’ motion for partial summary judgment, the District Court’s ruling applies to the entire class.  In October 2018, the Fifth Circuit Court of Appeals accepted the Company’s petition to review the District Court’s order granting class certification.  In September 2019, the Fifth Circuit Court of Appeals heard the Company’s oral arguments. The Company also intends to appeal the District Court’s order granting plaintiff’s motion for summary judgment to the Fifth Circuit Court of Appeals if permission to appeal is granted.  The Company will continue to vigorously defend the action and pursue such appeals.  Management estimates that the Company’s maximum exposure in the lawsuit, given the class certification and summary judgment ruling, is $54.6 million, which includes both potential damages and attorneys’ fees but excludes any prejudgment interest that may be awarded.

In April 2017, plaintiff Nathaniel Brown, on behalf of a purported class of plaintiffs, filed a complaint against the Operating Partnership, as the successor by merger to Post Properties’ primary operating partnership, and MAA in the United States District Court for the Western District of Texas, Austin Division.  The lawsuit alleges that Post Properties (and, following the Post Properties merger in December 2016, the Operating Partnership) charged late fees at its Texas properties that violate Section 92.019.  The plaintiffs are seeking monetary damages and attorney’s fees and costs.  In September 2018, the District Court certified a class proposed by the plaintiff.  Additionally, in September 2018, the District Court denied the Company’s motion for summary judgment and granted the plaintiff’s motion for partial summary judgment. Because the District Court certified a class prior to granting the plaintiff’s motion for partial summary judgment, the District Court’s ruling applies to the entire class.  In October 2018, the Fifth Circuit Court of Appeals accepted the Company’s petition to review the District Court’s order granting class certification. In September 2019, the Fifth Circuit Court of Appeals heard the Company’s oral arguments. The Company also intends to appeal the District Court’s order granting plaintiff’s motion for summary judgment to the Fifth Circuit Court of Appeals if permission to appeal is granted.  The Company will continue to vigorously defend the action and pursue such appeals.  Management estimates that the Company’s maximum exposure in the lawsuit, given the class certification and summary judgment ruling, is $8.4 million, which includes both potential damages and attorneys’ fees but excludes any prejudgment interest that may be awarded.

The Company is subject to various other legal proceedings and claims that arise in the ordinary course of its business operations.  Matters which arise out of allegations of bodily injury, property damage and employment practices are generally covered by insurance.  While the resolution of these other matters cannot be predicted with certainty, management does not currently believe that such matters, either individually or in the aggregate, will have a material adverse effect on the Company’s financial condition, results of operations or cash flows in the event of a negative outcome.

Loss Contingencies

The outcomes of claims, disputes and legal proceedings are subject to significant uncertainty.  The Company records an accrual for loss contingencies when a loss is probable and the amount of the loss can be reasonably estimated.  The Company also accrues an estimate of defense costs expected to be incurred in connection with legal matters.  Management reviews these accruals quarterly and makes revisions based on changes in facts and circumstances.  When a loss contingency is not both probable and reasonably estimable, management does not accrue the loss. However, if the loss (or an additional loss in excess of the accrual) is at least a reasonable possibility and material, then management discloses a reasonable estimate of the possible loss, or range of loss, if such reasonable estimate can be made.  If the Company cannot make a reasonable estimate of the possible loss, or range of loss, then a statement to that effect is disclosed.

The assessment of whether a loss is probable or a reasonable possibility, and whether the loss or range of loss is reasonably estimable, often involves a series of complex judgments about future events.  Among the factors considered in this assessment, are the nature of existing legal proceedings and claims, the asserted or possible damages or loss contingency (if reasonably estimable), the progress of the matter, existing law and precedent, the opinions or views of legal counsel and other advisers, management’s experience in similar matters, the facts available to management at the time of assessment, and how the Company intends to respond, or has responded, to the proceeding or claim.  Management’s assessment of these factors may change over time as individual proceedings or claims progress.  For matters where management is not currently able to reasonably estimate a range of reasonably possible loss, the factors that have contributed to this determination include the following: (i) the damages sought are indeterminate; (ii) the proceedings are in the early stages; (iii) the matters involve novel or unsettled legal theories or a large or uncertain number of actual or potential cases or parties; and/or (iv) discussions with the parties in matters that are ultimately expected to be resolved through negotiation and settlement have not reached the point where management believes a reasonable estimate of loss, or range of loss, can be made.  The Company believes that there is considerable uncertainty regarding the timing or ultimate resolution of such matters, including a possible eventual loss or business impact, if any.

As of September 30, 2020 and December 31, 2019, the Company’s accrual for loss contingencies relating to unresolved legal matters was $7.4 million and $8.6 million in the aggregate, respectively.  The loss contingencies are presented in “Accrued expenses and other liabilities” in the accompanying Condensed Consolidated Balance Sheets.

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Segment Information

9 Months Ended

Sep. 30, 2020

Notes To Financial Statements [Abstract]

Segment Information

11.Segment Information

As of September 30, 2020, the Company owned and operated 299 multifamily apartment communities in 16 different states from which it derived all significant sources of earnings and operating cash flows.  The Company views each consolidated apartment community as an operating segment. The Company’s chief operating decision maker, which is the Company’s Chief Executive Officer, evaluates performance and determines resource allocations of each of the apartment communities on a Same Store and Non-Same Store and Other basis, as well as an individual apartment community basis. This is consistent with the aggregation criteria under GAAP as each of the apartment communities generally has similar economic characteristics, facilities, services, and tenants.

The following reflects the two reportable segments for the Company:

• Same Store communities are communities that the Company has owned and have been stabilized for at least a full 12 months.

• Non-Same Store and Other includes recently acquired communities, communities in development or lease-up, communities that have been identified for disposition, communities that have incurred a significant casualty loss and stabilized communities that do not meet the requirements to be Same Store communities. Also included in Non-Same Store and Other are non-multifamily activities.

On the first day of each calendar year, the Company determines the composition of its Same Store and Non-Same Store and Other reportable segments for that year as well as adjusts the previous year, which allows the Company to evaluate full period-over-period operating comparisons.  Properties in development or lease-up are added to the Same Store portfolio on the first day of the calendar year after a community has been owned and stabilized for at least a full 12 months.  Communities are considered stabilized after achieving 90% occupancy for 90 days.  Communities that have been identified for disposition are excluded from the Same Store portfolio.

The chief operating decision maker utilizes net operating income, or NOI, in evaluating the performance of its operating segments.  Total NOI represents total property revenues less total property operating expenses, excluding depreciation and amortization, for all properties held during the period regardless of their status as held for sale.  Management believes that NOI is a helpful tool in evaluating the operating performance of the segments because it measures the core operations of property performance by excluding corporate level expenses and other items not directly related to property operating performance.

Revenues and NOI for each reportable segment for the three and nine months ended September 30, 2020 and 2019 were as follows (in thousands):

	Three months ended September 30,						Nine months ended September 30,
	2020			2019			2020			2019
Revenues:
Same Store
Rental revenues	$	394,556		$	386,356		$	1,170,844		$	1,137,967
Other property revenues		3,044			3,244			9,012			9,926
Total Same Store revenues		397,600			389,600			1,179,856			1,147,893
Non-Same Store and Other
Rental revenues		25,465			25,917			74,204			75,825
Other property revenues		134			115			263			482
Total Non-Same Store and Other revenues		25,599			26,032			74,467			76,307
Total rental and other property revenues	$	423,199		$	415,632		$	1,254,323		$	1,224,200
Net Operating Income:
Same Store NOI	$	238,702		$	241,362		$	730,702		$	717,216
Non-Same Store and Other NOI		14,683			14,731			43,164			43,926
Total NOI		253,385			256,093			773,866			761,142
Depreciation and amortization		(127,679	)		(124,684	)		(381,257	)		(371,417	)
Property management expenses		(12,691	)		(13,899	)		(39,064	)		(41,195	)
General and administrative expenses		(11,360	)		(10,225	)		(35,181	)		(32,960	)
Interest expense		(41,010	)		(44,513	)		(126,610	)		(136,149	)
Gain (loss) on sale of depreciable real estate assets		20			1,000			(7	)		987
Gain on sale of non-depreciable real estate assets		1,366			—			995			9,260
Other non-operating income (expense)		242			18,800			(13,647	)		23,494
Income tax expense		(665	)		(1,491	)		(2,532	)		(2,814	)
Income from real estate joint venture		428			378			1,153			1,210
Net income attributable to noncontrolling interests		(2,126	)		(2,814	)		(6,096	)		(7,336	)
Dividends to MAA Series I preferred shareholders		(922	)		(922	)		(2,766	)		(2,766	)
Net income available for MAA common shareholders	$	58,988		$	77,723		$	168,854		$	201,456

Assets for each reportable segment as of September 30, 2020 and December 31, 2019 were as follows (in thousands):

	September 30, 2020		December 31, 2019
Assets:
Same Store	$	9,740,808	$	9,975,880
Non-Same Store and Other		1,198,693		1,049,029
Corporate assets		189,203		205,541
Total assets	$	11,128,704	$	11,230,450

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Real Estate Acquisitions and Dispositions

9 Months Ended

Sep. 30, 2020

Real Estate [Abstract]

Real Estate Acquisitions and Dispositions

12.Real Estate Acquisitions and Dispositions

The following table reflects the Company’s acquisition activity for the nine months ended September 30, 2020:

Land Acquisition	Market	Acres		Date Acquired
Georgetown	Austin, TX		22	January 2020

The following table reflects the Company’s disposition activity for the nine months ended September 30, 2020:

Land Disposition	Market	Acres		Date Sold
Colonial Promenade	Huntsville, AL		27	September 2020

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Basis of Presentation and Principles of Consolidation and Significant Accounting Policies (Policies)

9 Months Ended

Sep. 30, 2020

Accounting Policies [Abstract]

Basis of Presentation and Principles of Consolidation

Basis of Presentation and Principles of Consolidation

The accompanying condensed consolidated financial statements have been prepared by the Company’s management in accordance with United States generally accepted accounting principles, or GAAP, and applicable rules and regulations of the Securities and Exchange Commission, or the SEC.  The condensed consolidated financial statements of MAA presented herein include the accounts of MAA, the Operating Partnership and all other subsidiaries in which MAA has a controlling financial interest. MAA owns, directly or indirectly, approximately 80% to 100% of all consolidated subsidiaries, including the Operating Partnership.  The condensed consolidated financial statements of MAALP presented herein include the accounts of MAALP and all other subsidiaries in which MAALP has a controlling financial interest.  MAALP owns, directly or indirectly, 80% to 100% of all consolidated subsidiaries.  In management’s opinion, all adjustments necessary for a fair presentation of the condensed consolidated financial statements have been included, and all such adjustments were of a normal recurring nature.  All significant intercompany accounts and transactions have been eliminated in consolidation.

The Company invests in entities which may qualify as variable interest entities, or VIEs, and MAALP is considered a VIE.  A VIE is a legal entity in which the equity investors lack sufficient equity at risk for the entity to finance its activities without additional subordinated financial support or, as a group, the holders of the equity investment at risk lack the power to direct the activities of a legal entity as well as the obligation to absorb its expected losses or the right to receive its expected residual returns.  MAALP is classified as a VIE, because the limited partners lack substantive kick-out rights and substantive participating rights.  The Company consolidates all VIEs for which it is the primary beneficiary and uses the equity method to account for investments that qualify as VIEs but for which it is not the primary beneficiary.  In determining whether the Company is the primary beneficiary of a VIE, management considers both qualitative and quantitative factors, including, but not limited to, those activities that most significantly impact the VIE’s economic performance and which party controls such activities.  The Company uses the equity method of accounting for its investments in entities for which the Company exercises significant influence, but does not have the ability to exercise control.  The factors considered in determining whether the Company has the ability to exercise control include ownership of voting interests and participatory rights of investors (see “Investments in Unconsolidated Affiliates” below).

Reclassifications

Reclassifications

In order to present comparative financial statements, certain reclassifications have been made to the Condensed Consolidated Statements of Operations. Prior year amounts have been changed to conform to the Company’s current year presentation.  As a result of these reclassifications, $1.3 million and $2.3 million of expenses previously reported as “General and administrative expenses” for the three and nine months ended September 30, 2019, respectively, have been reclassified to the “Other non-operating (income) expense” line item of the Condensed Consolidated Statements of Operations in this report.

Noncontrolling Interests

Noncontrolling Interests

As of September 30, 2020, the Company had two types of noncontrolling interests with respect to its consolidated subsidiaries, (1) noncontrolling interests related to the common unitholders of its Operating Partnership and (2) noncontrolling interests related to its consolidated real estate entities.  The noncontrolling interests relating to the limited partnership interests in the Operating Partnership are owned by the holders of the Class A OP Units. MAA is the sole general partner of the Operating Partnership and holds all of the outstanding Class B OP Units. Net income (after allocations to preferred ownership interests) is allocated to MAA and the noncontrolling interests based on their respective ownership percentages of the Operating Partnership. Issuance of additional Class A OP Units or Class B OP Units changes the ownership percentage of both the noncontrolling interests and MAA. The issuance of Class B OP Units generally occurs when MAA issues common stock and the issuance proceeds are contributed to the Operating Partnership in exchange for Class B OP Units equal to the number of shares of MAA’s common stock issued. At each reporting period, the allocation between total MAA shareholders’ equity and noncontrolling interests is adjusted to account for the change in the respective percentage ownership of the underlying equity of the Operating Partnership. MAA’s Board of Directors established economic rights in respect to each Class A OP Unit that were equivalent to the economic rights in respect to each share of MAA common stock. See Note 9 for additional details.

The noncontrolling interests relating to the Company’s two consolidated real estate entities are owned by private real estate companies that are generally responsible for the development and construction of the apartment communities that are owned through the consolidated real estate entities with a noncontrolling interest.  The entities were determined to be VIE’s with the Company designated as the primary beneficiary.  As a result, the accounts of the entities are consolidated by the Company.  As of September 30, 2020, the consolidated assets and liabilities of the Company’s consolidated real estate entities with a noncontrolling interest were $96.0 million and $10.2 million, respectively.  As of December 31, 2019, the consolidated assets and liabilities of the Company’s consolidated real estate entities with a noncontrolling interest were $46.0 million and $3.2 million, respectively.

Investments in Unconsolidated Affiliates

Investments in Unconsolidated Affiliates

The Company uses the equity method to account for its investments in a real estate joint venture and two technology-focused limited partnerships that qualify as a VIE. Management determined the Company is not the primary beneficiary in any of these investments but does have the ability to exert significant influence over the operations and financial policies of the real estate joint venture and considers its investment in the limited partnerships to be more than minor. The Company’s investment in the real estate joint venture was $43.5 million and $43.7 million as of September 30, 2020 and December 31, 2019, respectively.

As of September 30, 2020 and December 31, 2019, the Company’s investments in the technology-focused limited partnerships were $21.3 million and $13.1 million, respectively, and are included in “Other assets” in the accompanying Condensed Consolidated Balance Sheets. As of September 30, 2020, the Company was committed until February 2025 to make additional capital contributions totaling $21.3 million if and when called by the general partners of the limited partnerships.

Fair value Measurements

Fair Value Measurements

The Company applies the guidance in Accounting Standards Codification (“ASC”) Topic 820, Fair Value Measurements and Disclosures, to the valuation of real estate assets recorded at fair value, to its impairment valuation analysis of real estate assets, to its disclosure of the fair value of financial instruments, principally indebtedness and to its derivative financial instruments.  Fair value disclosures required under ASC Topic 820 as well as the Company’s derivative accounting policies are summarized in Note 7 utilizing the following hierarchy:

Level 1 - Quoted prices in active markets for identical assets or liabilities that are accessible at the measurement date.

Level 2 - Inputs other than quoted prices that are observable for the asset or liability, either directly or indirectly.

Level 3 - Unobservable inputs for the assets or liability.

Revenue Recognition

Revenue Recognition

The Company primarily leases multifamily residential apartments to residents under operating leases generally due on a monthly basis with terms of approximately one year or less.  Rental revenues are recognized in accordance with ASC Topic 842, Leases, using a method that represents a straight-line basis over the term of the lease. In addition, in circumstances where a lease incentive is provided to tenants, the incentive is recognized as a reduction of rental revenues on a straight-line basis over the reasonably assured lease term.  Rental revenues represent approximately 93% of the Company’s total revenues and include gross rents charged less adjustments for concessions and bad debt.  Approximately 6% of the Company’s total revenues represent non-lease reimbursable property revenues from its residents for utility reimbursements, which are generally recognized and due on a monthly basis as residents obtain control of the service over the term of the lease.  The remaining 1% of the Company’s total revenues represents other non-lease property revenues primarily driven by nonrefundable fees and commissions.

In accordance with ASC Topic 842, rental revenues and non-lease reimbursable property revenues meet the criteria to be aggregated into a single lease component and are reported on a combined basis in the line item “Rental revenues”, as presented in the disaggregation of the Company’s revenues in Note 11.  Other non-lease property revenues are accounted for in accordance with ASC Topic 606, Revenue from Contracts with Customers, which requires revenue recognized outside of the scope of ASC Topic 842 to be recognized when a customer obtains control of promised goods or services in an amount that reflects the consideration the entity expects to receive in exchange for those goods or services. Other non-lease property revenues are reported in the line item “Other property revenues”, as presented in the disaggregation of the Company’s revenues in Note 11.

Leases

Leases

The Company is the lessee under certain ground, office, equipment and other operational leases, all of which are accounted for as operating leases in accordance with ASC Topic 842. The Company recognizes a right-of-use asset for the right to use the underlying asset for all leases where the Company is the lessee with terms of more than twelve months, and a related lease liability for the obligation to make lease payments. Expenses related to leases determined to be operating leases are recognized on a straight-line basis.  As of September 30, 2020 and December 31, 2019, right-of-use assets recorded within “Other assets” totaled $50.1 million and $53.8 million, respectively, and related lease obligations recorded within “Accrued expenses and other liabilities” totaled $32.2 million and $33.1 million, respectively, in the Condensed Consolidated Balance Sheets.  As of September 30, 2020, the Company’s operating leases had a weighted average remaining lease term of approximately 31 years and a weighted average discount rate of approximately 4.4%. Lease expense recognized for the three and nine months ended September 30, 2020 and 2019 was immaterial to the Company. Cash paid for amounts included in the measurement of operating lease liabilities during the nine months ended September 30, 2020 and 2019 was also immaterial.

Recently Adopted Accounting Pronouncements

Recently Adopted Accounting Pronouncements

In June 2016, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) No. 2016-13, Measurement of Credit Losses on Financial Instruments, which amends the current approach to estimate credit losses on certain financial assets, including trade and other receivables, available-for-sale securities and other financial instruments.  The ASU requires entities to estimate a lifetime expected credit loss for most financial instruments, including trade receivables.  Subsequent changes in the valuation allowance are recorded in current earnings and reversal of previous losses is permitted.  In November 2018, the FASB issued an amendment excluding operating lease receivables accounted for under ASC Topic 842 from the scope of the new credit losses standard. The Company adopted the standard on January 1, 2020. The adoption of ASU No. 2016-13 did not result in significant changes in the accounting for the Company’s approach to estimate credit losses on financial assets, as substantially all of the Company’s financial assets are operating lease receivables.   

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Earnings Per Common Share of MAA (Tables)

9 Months Ended

Sep. 30, 2020

Earnings Per Common Share Of M A A [Abstract]

Schedule of Computation of Diluted Earnings per Share

For the three and nine months ended September 30, 2020 and 2019, MAA’s diluted earnings per share was computed using the treasury stock method as presented below (dollars and shares in thousands, except per share amounts):

	Three months ended September 30,						Nine months ended September 30,
	2020			2019			2020			2019
Calculation of Earnings per common share - basic
Net income	$	62,036		$	81,459		$	177,716		$	211,558
Net income attributable to noncontrolling interests		(2,126	)		(2,814	)		(6,096	)		(7,336	)
Unvested restricted stock (allocation of earnings)		(78	)		(118	)		(229	)		(302	)
Preferred dividends		(922	)		(922	)		(2,766	)		(2,766	)
Net income available for MAA common shareholders, adjusted	$	58,910		$	77,605		$	168,625		$	201,154
Weighted average common shares - basic		114,216			113,877			114,177			113,814
Earnings per common share - basic	$	0.52		$	0.68		$	1.48		$	1.77
Calculation of Earnings per common share - diluted
Net income	$	62,036		$	81,459		$	177,716		$	211,558
Net income attributable to noncontrolling interests (1)		(2,126	)		(2,814	)		(6,096	)		(7,336	)
Preferred dividends		(922	)		(922	)		(2,766	)		(2,766	)
Net income available for MAA common shareholders, adjusted	$	58,988		$	77,723		$	168,854		$	201,456
Weighted average common shares - basic		114,216			113,877			114,177			113,814
Effect of dilutive securities		252			260			310			238
Weighted average common shares - diluted		114,468			114,137			114,487			114,052
Earnings per common share - diluted	$	0.52		$	0.68		$	1.47		$	1.77

^{(1) For the three and nine months ended September 30, 2020 and 2019, 4.1 million OP Units and their related income are not included in the diluted earnings per share calculations as they are not dilutive.}

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Earnings Per OP Unit of MAALP (Tables)

9 Months Ended

Sep. 30, 2020

Earnings Per Share [Abstract]

Schedule of Diluted Earnings per Common Unit

For the three and nine months ended September 30, 2020 and 2019, MAALP’s diluted earnings per common unit was computed using the treasury stock method as presented below (dollars and units in thousands, except per unit amounts):

	Three months ended September 30,						Nine months ended September 30,
	2020			2019			2020			2019
Calculation of Earnings per common unit - basic
Net income	$	62,036		$	81,459		$	177,716		$	211,558
Unvested restricted stock (allocation of earnings)		(78	)		(118	)		(229	)		(302	)
Preferred unit distributions		(922	)		(922	)		(2,766	)		(2,766	)
Net income available for MAALP common unitholders, adjusted	$	61,036		$	80,419		$	174,721		$	208,490
Weighted average common units - basic		118,274			117,958			118,238			117,910
Earnings per common unit - basic	$	0.52		$	0.68		$	1.48		$	1.77
Calculation of Earnings per common unit - diluted
Net income	$	62,036		$	81,459		$	177,716		$	211,558
Preferred unit distributions		(922	)		(922	)		(2,766	)		(2,766	)
Net income available for MAALP common unitholders, adjusted	$	61,114		$	80,537		$	174,950		$	208,792
Weighted average common units - basic		118,274			117,958			118,238			117,910
Effect of dilutive securities		252			260			310			238
Weighted average common units - diluted		118,526			118,218			118,548			118,148
Earnings per common unit - diluted	$	0.52		$	0.68		$	1.48		$	1.77

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MAA Equity (Tables)

9 Months Ended

Sep. 30, 2020

M A A Equity [Abstract]

Summary of Changes in Total Equity and its Components

Changes in MAA’s total equity and its components for the three months ended September 30, 2020 and 2019 were as follows (dollars in thousands):

	Mid-America Apartment Communities, Inc. Shareholders’ Equity
	Preferred Stock		Common Stock		Additional Paid-In Capital		Accumulated Distributions in Excess of Net Income			Accumulated Other Comprehensive Loss			Noncontrolling Interests - Operating Partnership			Noncontrolling Interests - Consolidated Real Estate Entities		Total Equity
EQUITY BALANCE JUNE 30, 2020	$	9	$	1,140	$	7,168,886	$	(1,202,536	)	$	(12,665	)	$	209,894		$	6,849	$	6,171,577
Net income		—		—		—		59,910			—			2,126			—		62,036
Other comprehensive income - derivative instruments		—		—		—		—			269			10			—		279
Issuance and registration of common shares		—		—		33		—			—			—			—		33
Shares issued in exchange for common units		—		—		21		—			—			(21	)		—		—
Redeemable stock fair market value adjustment		—		—		—		(155	)		—			—			—		(155	)
Adjustment for noncontrolling interests in    Operating Partnership		—		—		71		—			—			(71	)		—		—
Amortization of unearned compensation		—		—		4,380		—			—			—			—		4,380
Dividends on preferred stock		—		—		—		(922	)		—			—			—		(922	)
Dividends on common stock ($1.00 per share)		—		—		—		(114,369	)		—			—			—		(114,369	)
Dividends on noncontrolling interests units    ($1.00 per unit)		—		—		—		—			—			(3,866	)		—		(3,866	)
Contribution from noncontrolling interest		—		—		—		—			—			—			262		262
EQUITY BALANCE SEPTEMBER 30, 2020	$	9	$	1,140	$	7,173,391	$	(1,258,072	)	$	(12,396	)	$	208,072		$	7,111	$	6,119,255

	Mid-America Apartment Communities, Inc. Shareholders’ Equity
	Preferred Stock		Common Stock		Additional Paid-In Capital			Accumulated Distributions in Excess of Net Income			Accumulated Other Comprehensive Loss			Noncontrolling Interests - Operating Partnership			Noncontrolling Interests - Consolidated Real Estate Entities		Total Equity
EQUITY BALANCE JUNE 30, 2019	$	9	$	1,138	$	7,146,076		$	(1,086,665	)	$	(9,092	)	$	215,404		$	5,656	$	6,272,526
Net income		—		—		—			78,645			—			2,814			—		81,459
Other comprehensive loss - derivative instruments		—		—		—			—			(5,778	)		(195	)		—		(5,973	)
Issuance and registration of common shares		—		—		140			—			—			—			—		140
Exercise of stock options		—		—		(204	)		—			—			—			—		(204	)
Shares issued in exchange for common units		—		—		836			—			—			(836	)		—		—
Redeemable stock fair market value adjustment		—		—		—			(1,269	)		—			—			—		(1,269	)
Adjustment for noncontrolling interests in    Operating Partnership		—		—		(272	)		—			—			272			—		—
Amortization of unearned compensation		—		—		3,313			—			—			—			—		3,313
Dividends on preferred stock		—		—		—			(922	)		—			—			—		(922	)
Dividends on common stock ($0.96 per share)		—		—		—			(109,503	)		—			—			—		(109,503	)
Dividends on noncontrolling interests units    ($0.96 per unit)		—		—		—			—			—			(3,912	)		—		(3,912	)
Contribution from noncontrolling interest		—		—		—			—			—			—			955		955
EQUITY BALANCE SEPTEMBER 30, 2019	$	9	$	1,138	$	7,149,889		$	(1,119,714	)	$	(14,870	)	$	213,547		$	6,611	$	6,236,610

Changes in MAA’s total equity and its components for the nine months ended September 30, 2020 and 2019 were as follows (dollars in thousands):

	Mid-America Apartment Communities, Inc. Shareholders’ Equity
	Preferred Stock		Common Stock		Additional Paid-In Capital			Accumulated Distributions in Excess of Net Income			Accumulated Other Comprehensive Loss			Noncontrolling Interests - Operating Partnership			Noncontrolling Interests - Consolidated Real Estate Entities		Total Equity
EQUITY BALANCE DECEMBER 31, 2019	$	9	$	1,140	$	7,166,073		$	(1,085,479	)	$	(13,178	)	$	214,647		$	6,247	$	6,289,459
Net income		—		—		—			171,620			—			6,096			—		177,716
Other comprehensive income - derivative instruments		—		—		—			—			782			28			—		810
Issuance and registration of common shares		—		—		(344	)		—			—			—			—		(344	)
Shares repurchased and retired		—		—		(5,657	)		—			—			—			—		(5,657	)
Exercise of stock options		—		—		71			—			—			—			—		71
Shares issued in exchange for common units		—		—		471			—			—			(471	)		—		—
Redeemable stock fair market value adjustment		—		—		—			1,659			—			—			—		1,659
Adjustment for noncontrolling interests in    Operating Partnership		—		—		244			—			—			(244	)		—		—
Amortization of unearned compensation		—		—		12,533			—			—			—			—		12,533
Dividends on preferred stock		—		—		—			(2,766	)		—			—			—		(2,766	)
Dividends on common stock ($3.00 per share)		—		—		—			(343,106	)		—			—			—		(343,106	)
Dividends on noncontrolling interests units    ($3.00 per unit)		—		—		—			—			—			(11,984	)		—		(11,984	)
Contribution from noncontrolling interest		—		—		—			—			—			—			864		864
EQUITY BALANCE SEPTEMBER 30, 2020	$	9	$	1,140	$	7,173,391		$	(1,258,072	)	$	(12,396	)	$	208,072		$	7,111	$	6,119,255

	Mid-America Apartment Communities, Inc. Shareholders’ Equity
	Preferred Stock		Common Stock		Additional Paid-In Capital			Accumulated Distributions in Excess of Net Income			Accumulated Other Comprehensive Loss			Noncontrolling Interests - Operating Partnership			Noncontrolling Interests - Consolidated Real Estate Entities		Total Equity
EQUITY BALANCE DECEMBER 31, 2018	$	9	$	1,136	$	7,138,170		$	(989,263	)	$	(212	)	$	220,043		$	2,306	$	6,372,189
Net income		—		—		—			204,222			—			7,336			—		211,558
Other comprehensive loss - derivative instruments		—		—		—			—			(14,658	)		(520	)		—		(15,178	)
Issuance and registration of common shares		—		2		748			—			—			—			—		750
Shares repurchased and retired		—		—		(3,724	)		—			—			—			—		(3,724	)
Exercise of stock options		—		—		1,036			—			—			—			—		1,036
Shares issued in exchange for common units		—		—		1,993			—			—			(1,993	)		—		—
Shares issued in exchange for redeemable stock		—		—		575			—			—			—			—		575
Redeemable stock fair market value adjustment		—		—		—			(3,455	)		—			—			—		(3,455	)
Adjustment for noncontrolling interests in    Operating Partnership		—		—		(459	)		—			—			459			—		—
Amortization of unearned compensation		—		—		11,550			—			—			—			—		11,550
Dividends on preferred stock		—		—		—			(2,766	)		—			—			—		(2,766	)
Dividends on common stock ($2.88 per share)		—		—		—			(328,452	)		—			—			—		(328,452	)
Dividends on noncontrolling interests units    ($2.88 per unit)		—		—		—			—			—			(11,778	)		—		(11,778	)
Contribution from noncontrolling interest		—		—		—			—			—			—			4,305		4,305
EQUITY BALANCE SEPTEMBER 30, 2019	$	9	$	1,138	$	7,149,889		$	(1,119,714	)	$	(14,870	)	$	213,547		$	6,611	$	6,236,610

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MAALP Capital (Tables)

9 Months Ended

Sep. 30, 2020

M A A L P Capital [Abstract]

Summary of Changes in Total Capital and its Components

Changes in MAALP’s total capital and its components for the three months ended September 30, 2020 and 2019 were as follows (dollars in thousands):

	Mid-America Apartments, L.P. Unitholders’ Capital
	Limited Partners			General Partner			Preferred Units			Accumulated Other Comprehensive Loss			Noncontrolling Interests- Consolidated Real Estate Entities		Total Partnership Capital
CAPITAL BALANCE JUNE 30, 2020	$	209,894		$	5,901,028		$	66,840		$	(13,053	)	$	6,849	$	6,171,558
Net income		2,126			58,988			922			—			—		62,036
Other comprehensive income - derivative instruments		—			—			—			279			—		279
Issuance of units		—			33			—			—			—		33
General partnership units issued in exchange for limited    partnership units		(21	)		21			—			—			—		—
Redeemable units fair market value adjustment		—			(155	)		—			—			—		(155	)
Adjustment for limited partners’ capital at redemption value		(61	)		61			—			—			—		—
Amortization of unearned compensation		—			4,380			—			—			—		4,380
Distributions to preferred unitholders		—			—			(922	)		—			—		(922	)
Distributions to common unitholders ($1.00 per unit)		(3,866	)		(114,369	)		—			—			—		(118,235	)
Contribution from noncontrolling interest		—			—			—			—			262		262
CAPITAL BALANCE SEPTEMBER 30, 2020	$	208,072		$	5,849,987		$	66,840		$	(12,774	)	$	7,111	$	6,119,236

	Mid-America Apartments, L.P. Unitholders’ Capital
	Limited Partners			General Partner			Preferred Units			Accumulated Other Comprehensive Loss			Noncontrolling Interests - Consolidated Real Estate Entities		Total Partnership Capital
CAPITAL BALANCE JUNE 30, 2019	$	215,404		$	5,993,973		$	66,840		$	(9,366	)	$	5,656	$	6,272,507
Net income		2,814			77,723			922			—			—		81,459
Other comprehensive loss - derivative instruments		—			—			—			(5,973	)		—		(5,973	)
Issuance of units		—			140			—			—			—		140
Exercise of unit options		—			(204	)		—			—			—		(204	)
General partnership units issued in exchange for limited    partnership units		(836	)		836			—			—			—		—
Redeemable units fair market value adjustment		—			(1,269	)		—			—			—		(1,269	)
Adjustment for limited partners’ capital at redemption value		77			(77	)		—			—			—		—
Amortization of unearned compensation		—			3,313			—			—			—		3,313
Distributions to preferred unitholders		—			—			(922	)		—			—		(922	)
Distributions to common unitholders ($0.96 per unit)		(3,912	)		(109,503	)		—			—			—		(113,415	)
Contribution from noncontrolling interest		—			—			—			—			955		955
CAPITAL BALANCE SEPTEMBER 30, 2019	$	213,547		$	5,964,932		$	66,840		$	(15,339	)	$	6,611	$	6,236,591

Changes in MAALP’s total capital and its components for the nine months ended September 30, 2020 and 2019 were as follows (dollars in thousands):

	Mid-America Apartments, L.P. Unitholders’ Capital
	Limited Partners			General Partner			Preferred Units			Accumulated Other Comprehensive Loss			Noncontrolling Interests- Consolidated Real Estate Entities		Total Partnership Capital
CAPITAL BALANCE DECEMBER 31, 2019	$	214,647		$	6,015,290		$	66,840		$	(13,584	)	$	6,247	$	6,289,440
Net income		6,096			168,854			2,766			—			—		177,716
Other comprehensive income - derivative instruments		—			—			—			810			—		810
Issuance of units		—			(344	)		—			—			—		(344	)
Units repurchased and retired		—			(5,657	)		—			—			—		(5,657	)
Exercise of unit options		—			71			—			—			—		71
General partnership units issued in exchange for limited    partnership units		(471	)		471			—			—			—		—
Redeemable units fair market value adjustment		—			1,659			—			—			—		1,659
Adjustment for limited partners’ capital at redemption value		(216	)		216			—			—			—		—
Amortization of unearned compensation		—			12,533			—			—			—		12,533
Distributions to preferred unitholders		—			—			(2,766	)		—			—		(2,766	)
Distributions to common unitholders ($3.00 per unit)		(11,984	)		(343,106	)		—			—			—		(355,090	)
Contribution from noncontrolling interest		—			—			—			—			864		864
CAPITAL BALANCE SEPTEMBER 30, 2020	$	208,072		$	5,849,987		$	66,840		$	(12,774	)	$	7,111	$	6,119,236

	Mid-America Apartments, L.P. Unitholders’ Capital
	Limited Partners			General Partner			Preferred Units			Accumulated Other Comprehensive Loss			Noncontrolling Interests - Consolidated Real Estate Entities		Total Partnership Capital
CAPITAL BALANCE DECEMBER 31, 2018	$	220,043		$	6,083,142		$	66,840		$	(161	)	$	2,306	$	6,372,170
Net income		7,336			201,456			2,766			—			—		211,558
Other comprehensive loss - derivative instruments		—			—			—			(15,178	)		—		(15,178	)
Issuance of units		—			750			—			—			—		750
Units repurchased and retired		—			(3,724	)		—			—			—		(3,724	)
Exercise of unit options		—			1,036			—			—			—		1,036
General partnership units issued in exchange for limited    partnership units		(1,993	)		1,993			—			—			—		—
Units issued in exchange for redeemable units		—			575			—			—			—		575
Redeemable units fair market value adjustment		—			(3,455	)		—			—			—		(3,455	)
Adjustment for limited partners’ capital at redemption value		(61	)		61			—			—			—		—
Amortization of unearned compensation		—			11,550			—			—			—		11,550
Distributions to preferred unitholders		—			—			(2,766	)		—			—		(2,766	)
Distributions to common unitholders ($2.88 per unit)		(11,778	)		(328,452	)		—			—			—		(340,230	)
Contribution from noncontrolling interest		—			—			—			—			4,305		4,305
CAPITAL BALANCE SEPTEMBER 30, 2019	$	213,547		$	5,964,932		$	66,840		$	(15,339	)	$	6,611	$	6,236,591

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Borrowings (Tables)

9 Months Ended

Sep. 30, 2020

Debt Disclosure [Abstract]

Summary of Outstanding Debt

The following table summarizes the Company’s outstanding debt as of September 30, 2020 (dollars in thousands):

	Balance			Weighted Average Effective Rate			Weighted Average Contract Maturity
Unsecured debt
Variable rate revolving credit facility	$	—			—			—
Variable rate commercial paper program		35,000			0.2	%	10/2/2020
Fixed rate senior notes		3,922,000			3.6	%	1/27/2027
Debt issuance costs, discounts, premiums and fair market value adjustments		(17,575	)
Total unsecured debt	$	3,939,425			3.6	%
Secured debt
Fixed rate property mortgages	$	489,595			4.6	%	12/31/2041
Debt issuance costs and fair market value adjustments		(3,426	)
Total secured debt	$	486,169			4.6	%
Total outstanding debt	$	4,425,594			3.7	%

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Financial Instruments and Derivatives (Tables)

9 Months Ended

Sep. 30, 2020

Fair Value Disclosures [Abstract]

Effect of Derivative Instruments on Consolidated Statement of Operations

The tables below present the effect of the Company’s derivative financial instruments on the Condensed Consolidated Statements of Operations for the three and nine months ended September 30, 2020 and 2019 (dollars in thousands):

Derivatives in Cash Flow Hedging Relationships	Loss Recognized in OCI on Derivative					Location of (Loss) Gain Reclassified from Accumulated	Net (Loss) Gain Reclassified from Accumulated OCL into Interest Expense(1)
Three months ended September 30,	2020		2019			OCL into Income	2020			2019
Interest rate contracts	$	—	$	(5,562	)	Interest expense	$	(279	)	$	411
Nine months ended September 30,
Interest rate contracts	$	—	$	(13,444	)	Interest expense	$	(810	)	$	1,734

^{(1) See the Condensed Consolidated Statements of Comprehensive Income for changes in accumulated other comprehensive loss as these changes are presented net of the allocation to noncontrolling interests.}

Derivatives Not Designated as Hedging Instruments	Location of Gain (Loss) Recognized in	Gain (Loss) Recognized in Earnings on Derivative
Three months ended September 30,	Income on Derivative	2020			2019
Preferred stock embedded derivative	Other non-operating (income) expense	$	1,342		$	15,522
Nine months ended September 30,
Preferred stock embedded derivative	Other non-operating (income) expense	$	(14,603	)	$	19,592

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Shareholders' Equity of MAA (Tables)

9 Months Ended

Sep. 30, 2020

Shareholders Equity Of M A A [Abstract]

Schedule of Cumulative Redeemable Preferred Stock

As of September 30, 2020, MAA had one outstanding series of cumulative redeemable preferred stock which has the following characteristics:

Description	Outstanding Shares		Liquidation Preference(1)		Optional Redemption Date	Redemption Price(2)		Stated Dividend Yield			Approximate Dividend Rate
Series I		867,846	$	50.00	10/1/2026	$	50.00		8.50	%	$	4.25

^{(1) The total liquidation preference for the outstanding preferred stock is $43.4 million.}

^{(2) The redemption price is the price at which the preferred stock is redeemable, at MAA’s option, for cash.}

See Note 7 for details of the valuation of the derivative asset related to the redemption feature embedded in the MAA Series I preferred stock.  

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Commitments and Contingencies (Tables)

9 Months Ended

Sep. 30, 2020

Loss Contingency [Abstract]

Schedule of Operating Lease Obligations

The table below reconciles undiscounted cash flows for each of the first five years and total of the remaining years to the operating lease obligations recorded on the Condensed Consolidated Balance Sheets as of September 30, 2020 (in thousands):

	Operating Leases
2020	$	707
2021		2,854
2022		2,885
2023		2,875
2024		2,853
Thereafter		65,863
Total minimum lease payments		78,037
Net present value adjustments		(45,856	)
Operating lease obligations	$	32,181

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Segment Information (Tables)

9 Months Ended

Sep. 30, 2020

Notes To Financial Statements [Abstract]

Revenues and NOI for Reportable Segment

Revenues and NOI for each reportable segment for the three and nine months ended September 30, 2020 and 2019 were as follows (in thousands):

	Three months ended September 30,						Nine months ended September 30,
	2020			2019			2020			2019
Revenues:
Same Store
Rental revenues	$	394,556		$	386,356		$	1,170,844		$	1,137,967
Other property revenues		3,044			3,244			9,012			9,926
Total Same Store revenues		397,600			389,600			1,179,856			1,147,893
Non-Same Store and Other
Rental revenues		25,465			25,917			74,204			75,825
Other property revenues		134			115			263			482
Total Non-Same Store and Other revenues		25,599			26,032			74,467			76,307
Total rental and other property revenues	$	423,199		$	415,632		$	1,254,323		$	1,224,200
Net Operating Income:
Same Store NOI	$	238,702		$	241,362		$	730,702		$	717,216
Non-Same Store and Other NOI		14,683			14,731			43,164			43,926
Total NOI		253,385			256,093			773,866			761,142
Depreciation and amortization		(127,679	)		(124,684	)		(381,257	)		(371,417	)
Property management expenses		(12,691	)		(13,899	)		(39,064	)		(41,195	)
General and administrative expenses		(11,360	)		(10,225	)		(35,181	)		(32,960	)
Interest expense		(41,010	)		(44,513	)		(126,610	)		(136,149	)
Gain (loss) on sale of depreciable real estate assets		20			1,000			(7	)		987
Gain on sale of non-depreciable real estate assets		1,366			—			995			9,260
Other non-operating income (expense)		242			18,800			(13,647	)		23,494
Income tax expense		(665	)		(1,491	)		(2,532	)		(2,814	)
Income from real estate joint venture		428			378			1,153			1,210
Net income attributable to noncontrolling interests		(2,126	)		(2,814	)		(6,096	)		(7,336	)
Dividends to MAA Series I preferred shareholders		(922	)		(922	)		(2,766	)		(2,766	)
Net income available for MAA common shareholders	$	58,988		$	77,723		$	168,854		$	201,456

Assets for Reportable Segment

Assets for each reportable segment as of September 30, 2020 and December 31, 2019 were as follows (in thousands):

	September 30, 2020		December 31, 2019
Assets:
Same Store	$	9,740,808	$	9,975,880
Non-Same Store and Other		1,198,693		1,049,029
Corporate assets		189,203		205,541
Total assets	$	11,128,704	$	11,230,450

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Real Estate Acquisitions and Dispositions (Tables)

9 Months Ended

Sep. 30, 2020

Real Estate [Abstract]

Schedule of Real Estate Asset Acquisitions and Dispositions

The following table reflects the Company’s acquisition activity for the nine months ended September 30, 2020:

Land Acquisition	Market	Acres		Date Acquired
Georgetown	Austin, TX		22	January 2020

The following table reflects the Company’s disposition activity for the nine months ended September 30, 2020:

Land Disposition	Market	Acres		Date Sold
Colonial Promenade	Huntsville, AL		27	September 2020

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Basis of Presentation and Principles of Consolidation and Significant Accounting Policies - Additional Information (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020 USD ($) ft² Property Community State shares	Sep. 30, 2019 USD ($) shares	Sep. 30, 2020 USD ($) ft² Property Community State shares	Sep. 30, 2019 USD ($) shares	Dec. 31, 2022 Property	Dec. 31, 2021 Property	Dec. 31, 2020 Property	Dec. 31, 2019 USD ($) shares
Real Estate Properties [Line Items]
General Partners' Capital Account, Units Outstanding | shares	114,369,812	114,065,859	114,369,812	114,065,859
Number of Real Estate Properties | Community	299		299
Development and capital improvements in progress	$ 220,685		$ 220,685					$ 116,424
Number of States in which Entity Operates | State	16		16
Other non-operating expense (income)	$ 242	$ 18,800	$ (13,647)	$ 23,494
Consolidated assets	11,128,704		11,128,704					11,230,450
Consolidated liabilities	4,995,608		4,995,608					4,926,860
Real Estate Investments, Joint Ventures	21,300		$ 21,300
Percentage Of Rental Revenue From Leasing Of Apartment Homes			93.00%
Percentage Of Reimbursable Revenue From Leasing Of Apartment Homes			6.00%
Percentage of Rental Revenue and Other Income From Non-leasing Activities			1.00%
Operating Lease, Right-of-Use Asset	50,100		$ 50,100					53,800
Operating Lease, Liability	$ 32,181		$ 32,181					33,100
Operating Lease, Weighted Average Remaining Lease Term	31 years		31 years
Operating Lease, Weighted Average Discount Rate, Percent	4.40%		4.40%
Other Assets [Member]
Real Estate Properties [Line Items]
Real Estate Investments, Joint Ventures	$ 21,300		$ 21,300					13,100
Real Estate | Post Massachusetts Avenue [Member]
Real Estate Properties [Line Items]
Real Estate Investments, Joint Ventures	43,500		43,500					43,700
Real Estate | Variable Interest Entity Primary Beneficiary [Member]
Real Estate Properties [Line Items]
Consolidated assets	96,000		96,000					46,000
Consolidated liabilities	$ 10,200		$ 10,200					$ 3,200
Previously Reported [Member] | General and Administrative Expenses [Member]
Real Estate Properties [Line Items]
Other non-operating expense (income)		1,300		2,300
Minimum [Member]
Real Estate Properties [Line Items]
Percentage of ownership interests of all consolidated subsidiaries (percent)	80.00%		80.00%
Maximum [Member]
Real Estate Properties [Line Items]
Percentage of ownership interests of all consolidated subsidiaries (percent)	100.00%		100.00%
Maximum [Member] | Accounting Standards Update 2016-02 [Member]
Real Estate Properties [Line Items]
Operating lease, term of contract	1 year		1 year
Limited Partner [Member]
Real Estate Properties [Line Items]
General Partners' Capital Account, Units Outstanding | shares	114,369,812		114,369,812					114,246,393
Number of Real Estate Properties | Property	1		1
Development and capital improvements in progress	$ 220,685		$ 220,685					$ 116,424
Other non-operating expense (income)	242	$ 18,800	(13,647)	$ 23,494
Consolidated assets	11,128,704		11,128,704					11,230,450
Consolidated liabilities	$ 4,995,627		$ 4,995,627					$ 4,926,879
Limited Partner [Member] | Minimum [Member]
Real Estate Properties [Line Items]
Percentage of ownership interests of all consolidated subsidiaries (percent)	80.00%		80.00%
Limited Partner [Member] | Maximum [Member]
Real Estate Properties [Line Items]
Percentage of ownership interests of all consolidated subsidiaries (percent)	100.00%		100.00%
Development Properties
Real Estate Properties [Line Items]
Number of Real Estate Properties | Community	6		6
Number of units under development community | Property	1,940		1,940
Development Properties | Expected Costs
Real Estate Properties [Line Items]
Development and capital improvements in progress	$ 459,500		$ 459,500
Development Properties | Costs Incurred To Date
Real Estate Properties [Line Items]
Development and capital improvements in progress	$ 264,000		$ 264,000
Development Properties | Scenario Forecast [Member]
Real Estate Properties [Line Items]
Number of Real Estate Properties | Property					1	4	1
Retail
Real Estate Properties [Line Items]
Number of Real Estate Properties | Property	32		32
Square Footage of Real Estate Property | ft²	630,000		630,000
Commercial Real Estate [Member]
Real Estate Properties [Line Items]
Number of Real Estate Properties | Property	4		4
Square Footage of Real Estate Property | ft²	260,000		260,000
M A A L P
Real Estate Properties [Line Items]
Limited Liability Company (LLC) or Limited Partnership (LP), Managing Member or General Partner, Ownership Interest			96.60%	96.60%

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Earnings Per Common Share of MAA - Schedule of Computation of Diluted Earnings per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Earnings Per Share Disclosure [Line Items]
Income from Continuing Operations, Including Portion Attributable to Noncontrolling Interest		$ 62,036	$ 81,459	$ 177,716	$ 211,558
Income from continuing operations attributable to noncontrolling interests		(2,126)	(2,814)	(6,096)	(7,336)
Income from continuing operations allocated to unvested restricted shares		(78)	(118)	(229)	(302)
Dividends, Preferred Stock, Cash		(922)	(922)	(2,766)	(2,766)
Income from continuing operations available for common shareholders, adjusted		$ 58,910	$ 77,605	$ 168,625	$ 201,154
Weighted average common shares - basic		114,216	113,877	114,177	113,814
Earnings per share - basic		$ 0.52	$ 0.68	$ 1.48	$ 1.77
Income from Continuing Operations, Including Portion Attributable to Noncontrolling Interest		$ 62,036	$ 81,459	$ 177,716	$ 211,558
Income from continuing operations attributable to noncontrolling interests	[1]	(2,126)	(2,814)	(6,096)	(7,336)
Net income available for MAA common shareholders, adjusted		$ 58,988	$ 77,723	$ 168,854	$ 201,456
Effect of dilutive securities		252	260	310	238
Weighted average common shares - diluted		114,468	114,137	114,487	114,052
Earnings per share - diluted		$ 0.52	$ 0.68	$ 1.47	$ 1.77
Limited Partnership Units [Member]
Earnings Per Share Disclosure [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount		4,100	4,100	4,100	4,100

[1] For the three and nine months ended September 30, 2020 and 2019, 4.1 million OP Units and their related income are not included in the diluted earnings per share calculations as they are not dilutive.

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Earnings Per OP Unit of MAALP - Schedule of Diluted Earnings per Common Unit (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Earnings Per Share Disclosure [Line Items]
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	$ 62,036	$ 81,459	$ 177,716	$ 211,558
Dividends, Preferred Stock, Cash	(922)	(922)	(2,766)	(2,766)
Income from continuing operations available for common shareholders, adjusted	$ 58,910	$ 77,605	$ 168,625	$ 201,154
Earnings per share - basic	$ 0.52	$ 0.68	$ 1.48	$ 1.77
Net income available for MAA common shareholders, adjusted	$ 58,988	$ 77,723	$ 168,854	$ 201,456
Effect of dilutive securities	252,000	260,000	310,000	238,000
Weighted average common shares - diluted	114,468,000	114,137,000	114,487,000	114,052,000
Earnings per common unit - diluted	$ 0.52	$ 0.68	$ 1.47	$ 1.77
Limited Partner [Member]
Earnings Per Share Disclosure [Line Items]
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	$ 62,036	$ 81,459	$ 177,716	$ 211,558
Income from continuing operations allocated to unvested restricted shares	(78)	(118)	(229)	(302)
Dividends, Preferred Stock, Cash	(922)	(922)	(2,766)	(2,766)
Income from continuing operations available for common shareholders, adjusted	$ 61,036	$ 80,419	$ 174,721	$ 208,490
Weighted average common units - basic	118,274	117,958	118,238	117,910
Earnings per share - basic	$ 0.52	$ 0.68	$ 1.48	$ 1.77
Net income available for MAA common shareholders, adjusted	$ 61,114	$ 80,537	$ 174,950	$ 208,792
Effect of dilutive securities	252	260	310	238
Weighted average common shares - diluted	118,526	118,218	118,548	118,148
Earnings per common unit - diluted	$ 0.52	$ 0.68	$ 1.48	$ 1.77

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MAA Equity - Summary of Changes in Total Equity and its Components (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Dividends, Preferred Stock, Cash	$ (922)	$ (922)	$ (2,766)	$ (2,766)
Mid America Apartment Communities Inc Shareholders Equity
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance	6,171,577	6,272,526	6,289,459	6,372,189
Net Income Including Portion Attributable to Noncontrolling Interest	62,036	81,459	177,716	211,558
Other comprehensive income (loss) - derivatives instruments (cash flow hedges)	279	(5,973)	810	(15,178)
Issuance and registration of common shares	33	140	(344)	750
Shares repurchased and retired			(5,657)	(3,724)
Exercise of stock options		(204)	71	1,036
Shares issued in exchange for redeemable stock				575
Redeemable stock fair market value adjustment	(155)	(1,269)	1,659	(3,455)
Amortization of unearned compensation	4,380	3,313	12,533	11,550
Dividends, Preferred Stock, Cash	(922)	(922)	(2,766)	(2,766)
Dividends on common stock	(114,369)	(109,503)	(343,106)	(328,452)
Dividends on noncontrolling interest units	(3,866)	(3,912)	(11,984)	(11,778)
Contribution from noncontrolling interest	262	955	864	4,305
Ending Balance	6,119,255	6,236,610	6,119,255	6,236,610
Preferred Stock [Member] | Mid America Apartment Communities Inc Shareholders Equity
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance	9	9	9	9
Ending Balance	9	9	9	9
Common Stock [Member] | Mid America Apartment Communities Inc Shareholders Equity
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance	1,140	1,138	1,140	1,136
Issuance and registration of common shares				2
Ending Balance	1,140	1,138	1,140	1,138
Additional Paid-in Capital [Member] | Mid America Apartment Communities Inc Shareholders Equity
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance	7,168,886	7,146,076	7,166,073	7,138,170
Issuance and registration of common shares	33	140	(344)	748
Shares repurchased and retired			(5,657)	(3,724)
Exercise of stock options		(204)	71	1,036
Shares issued in exchange for common units	21	836	471	1,993
Shares issued in exchange for redeemable stock				575
Adjustment for noncontrolling interests in Operating Partnership	71	(272)	244	(459)
Amortization of unearned compensation	4,380	3,313	12,533	11,550
Ending Balance	7,173,391	7,149,889	7,173,391	7,149,889
Accumulated Distributions in Excess of Net Income [Member] | Mid America Apartment Communities Inc Shareholders Equity
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance	(1,202,536)	(1,086,665)	(1,085,479)	(989,263)
Net income attributable to MAA	59,910	78,645	171,620	204,222
Redeemable stock fair market value adjustment	(155)	(1,269)	1,659	(3,455)
Dividends, Preferred Stock, Cash	(922)	(922)	(2,766)	(2,766)
Dividends on common stock	(114,369)	(109,503)	(343,106)	(328,452)
Ending Balance	(1,258,072)	(1,119,714)	(1,258,072)	(1,119,714)
Accumulated Other Comprehensive Income (Loss) [Member] | Mid America Apartment Communities Inc Shareholders Equity
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance	(12,665)	(9,092)	(13,178)	(212)
Other comprehensive income (loss) - derivatives instruments (cash flow hedges)	269	(5,778)	782	(14,658)
Ending Balance	(12,396)	(14,870)	(12,396)	(14,870)
Noncontrolling Interest Operating Partnership | Mid America Apartment Communities Inc Shareholders Equity
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance	209,894	215,404	214,647	220,043
Net Income Attributable to Noncontrolling Interest	2,126	2,814	6,096	7,336
Other comprehensive income (loss) - derivatives instruments (cash flow hedges)	10	(195)	28	(520)
Shares issued in exchange for common units	(21)	(836)	(471)	(1,993)
Adjustment for noncontrolling interests in Operating Partnership	(71)	272	(244)	459
Dividends on noncontrolling interest units	(3,866)	(3,912)	(11,984)	(11,778)
Ending Balance	208,072	213,547	208,072	213,547
Noncontrolling Interest | Mid America Apartment Communities Inc Shareholders Equity
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance	6,849	5,656	6,247	2,306
Contribution from noncontrolling interest	262	955	864	4,305
Ending Balance	$ 7,111	$ 6,611	$ 7,111	$ 6,611

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MAA Equity - Summary of Changes in Total Equity and its Components (Parenthetical) (Details) - $ / shares	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Mid America Apartment Communities Inc Shareholders Equity
Equity [Line Items]
Common Stock, Dividends, Per Share, Declared	$ 1.00	$ 0.96	$ 3.00	$ 2.88

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MAALP Capital - Summary of Changes in Total Capital and its Components (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Increase (Decrease) in Partners' Capital [Roll Forward]
Dividends, Preferred Stock, Cash	$ (922)	$ (922)	$ (2,766)	$ (2,766)
M A A L P
Increase (Decrease) in Partners' Capital [Roll Forward]
Beginning Balance	6,171,558	6,272,507	6,289,440	6,372,170
Net Income Available for Common Unitholders	62,036	81,459	177,716	211,558
Other comprehensive income (loss) - derivatives instruments (cash flow hedges)	279	(5,973)	810	(15,178)
Issuance of units	33	140	(344)	750
Units repurchased and retired			(5,657)	(3,724)
Exercise of unit options		(204)	71	1,036
Units issued in exchange for redeemable units				575
Redeemable stock fair market value adjustment	(155)	(1,269)	1,659	(3,455)
Amortization of unearned compensation	4,380	3,313	12,533	11,550
Dividends, Preferred Stock, Cash	(922)	(922)	(2,766)	(2,766)
Distributions	(118,235)	(113,415)	(355,090)	(340,230)
Contribution from noncontrolling interest	262	955	864	4,305
Ending Balance	6,119,236	6,236,591	6,119,236	6,236,591
M A A L P | Limited Partner [Member]
Increase (Decrease) in Partners' Capital [Roll Forward]
Beginning Balance	209,894	215,404	214,647	220,043
Net income	2,126	2,814	6,096	7,336
General partnership units issued in exchange for limited partnership units	(21)	(836)	(471)	(1,993)
Adjustment for limited partners’ capital at redemption value	(61)	77	(216)	(61)
Distributions	(3,866)	(3,912)	(11,984)	(11,778)
Ending Balance	208,072	213,547	208,072	213,547
M A A L P | General Partners' Capital Account [Member]
Increase (Decrease) in Partners' Capital [Roll Forward]
Beginning Balance	5,901,028	5,993,973	6,015,290	6,083,142
Net Income Allocated to General Partners	58,988	77,723	168,854	201,456
Issuance of units	33	140	(344)	750
Units repurchased and retired			(5,657)	(3,724)
Exercise of unit options		(204)	71	1,036
General partnership units issued in exchange for limited partnership units	21	836	471	1,993
Units issued in exchange for redeemable units				575
Redeemable stock fair market value adjustment	(155)	(1,269)	1,659	(3,455)
Adjustment for limited partners’ capital at redemption value	61	(77)	216	61
Amortization of unearned compensation	4,380	3,313	12,533	11,550
Distributions	(114,369)	(109,503)	(343,106)	(328,452)
Ending Balance	5,849,987	5,964,932	5,849,987	5,964,932
M A A L P | Accumulated Distributions in Excess of Net Income [Member]
Increase (Decrease) in Partners' Capital [Roll Forward]
Beginning Balance	66,840	66,840	66,840	66,840
Net income	922	922	2,766	2,766
Dividends, Preferred Stock, Cash	(922)	(922)	(2,766)	(2,766)
Ending Balance	66,840	66,840	66,840	66,840
M A A L P | AOCI Attributable to Noncontrolling Interest [Member]
Increase (Decrease) in Partners' Capital [Roll Forward]
Beginning Balance	(13,053)	(9,366)	(13,584)	(161)
Other comprehensive income (loss) - derivatives instruments (cash flow hedges)	279	(5,973)	810	(15,178)
Ending Balance	(12,774)	(15,339)	(12,774)	(15,339)
M A A L P | Noncontrolling Interests-Consolidated Real Estate Entities [Member]
Increase (Decrease) in Partners' Capital [Roll Forward]
Beginning Balance	6,849	5,656	6,247	2,306
Contribution from noncontrolling interest	262	955	864	4,305
Ending Balance	$ 7,111	$ 6,611	$ 7,111	$ 6,611

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MAALP Capital - Summary of Changes in Total Capital and its Components (Parenthetical) (Details) - $ / shares	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
M A A L P | Limited Partner [Member]
Capital Disclosure [Line Items]
Distribution Made to Limited Partner, Distributions Declared, Per Unit	$ 1.00	$ 0.96	$ 3.00	$ 2.88

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Borrowings - Summary of Outstanding Debt (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2020 USD ($)
Debt Instrument [Line Items]
Total Outstanding Debt	$ 4,425,594
Debt Instrument, Interest Rate, Effective Percentage	3.70%
Unsecured Debt [Member]
Debt Instrument [Line Items]
Total Outstanding Debt	$ 3,939,425
Debt Instrument, Interest Rate, Effective Percentage	3.60%
Unsecured Debt [Member] | Fixed Rate Debt Senior Notes [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount	$ 3,922,000
Debt Instrument, Interest Rate, Effective Percentage	3.60%
Contract Maturity	Jan. 27, 2027
Unsecured Debt [Member] | Commercial Paper Notes [Member] | Variable Rate Commercial Paper Program [Member]
Debt Instrument [Line Items]
Unsecured Debt	$ 35,000
Debt Instrument, Interest Rate, Effective Percentage	0.20%
Contract Maturity	Oct. 02, 2020
Unsecured Debt [Member] | $1 billion unsecured revolving credit facility [Member] | Fair Market Value Adjustment and Debt Issuance Cost [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount	$ (17,575)
Secured Debt [Member]
Debt Instrument [Line Items]
Total Outstanding Debt	$ 486,169
Debt Instrument, Interest Rate, Effective Percentage	4.60%
Secured Debt [Member] | Fair Market Value Adjustment and Debt Issuance Cost [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Amount Outstanding	$ (3,426)
Secured Debt [Member] | Fixed Rate Debt Senior Notes [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount	$ 489,595
Debt Instrument, Interest Rate, Effective Percentage	4.60%
Contract Maturity	Dec. 31, 2041

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Borrowings - Additional Information (Details)	1 Months Ended		9 Months Ended
	Aug. 31, 2020 USD ($)	Jul. 31, 2020 USD ($) ApartmentUnit	Sep. 30, 2020 USD ($)
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Effective Percentage			3.70%
Commercial Paper Notes [Member]
Debt Instrument [Line Items]
Debt Instrument, Payment Terms			397
Debt Instrument, Face Amount			$ 35,000,000.0
Debt Instrument, Unused Borrowing Capacity, Amount			118,000,000.0
Maximum [Member] | Commercial Paper Notes [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount			$ 500,000,000.0
Unsecured Debt [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Effective Percentage			3.60%
Unsecured Debt [Member] | Fixed Rate Debt Senior Notes [Member]
Debt Instrument [Line Items]
Debt Instrument, Maturity Date			Jan. 27, 2027
Debt Instrument, Face Amount			$ 3,922,000,000
Debt Instrument, Interest Rate, Effective Percentage			3.60%
Unsecured Debt [Member] | Years to Maturity [Member] | Fixed Rate Debt Senior Notes [Member]
Debt Instrument [Line Items]
Debt Instrument, Term			6 years 3 months 18 days
Unsecured Debt [Member] | Minimum [Member] | Fixed Rate Debt Senior Notes [Member]
Debt Instrument [Line Items]
Debt Instrument, Term			10 years
Unsecured Debt [Member] | Maximum [Member] | Fixed Rate Debt Senior Notes [Member]
Debt Instrument [Line Items]
Debt Instrument, Term			12 years
Unsecured Debt [Member] | $1 Billion Unsecured Revolving Credit Faciltiy [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Current Borrowing Capacity			$ 1,000,000,000.0
Line of Credit Facility, Maximum Borrowing Capacity			$ 1,500,000,000
Debt Instrument, Maturity Date			May 31, 2023
Line of Credit Facility, Amount Outstanding			$ 0
Letters of Credit Outstanding, Amount			$ 3,400,000
Unsecured Debt [Member] | $1 Billion Unsecured Revolving Credit Faciltiy [Member] | Minimum [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate			0.75%
Unsecured Debt [Member] | $1 Billion Unsecured Revolving Credit Faciltiy [Member] | Maximum [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate			1.45%
Unsecured Debt [Member] | Public Income Notes [Member] | Fixed Rate Debt Senior Notes [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount			$ 3,700,000,000
Unsecured Debt [Member] | Private Placement [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount			222,000,000.0
Unsecured Debt [Member] | Private Placement [Member] | Fixed Rate Debt Senior Notes [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount			$ 222,000,000.0
Unsecured Debt [Member] | 1.700% Notes Due 2031 [Member] | M A A L P
Debt Instrument [Line Items]
Debt Instrument, Payment Terms	Interest on the 2031 Notes is payable on February 15 and August 15 of each year, beginning on February 15, 2021.
Debt Instrument, Face Amount	$ 450,000,000.0
Debt Instrument, Interest Rate, Stated Percentage	1.70%
Debt Instrument, Redemption Price, Percentage	99.465%
Debt Issuance Costs, Gross	$ 5,300,000
Proceeds from Debt, Net of Issuance Costs	$ 444,700,000
Debt Instrument, Interest Rate, Effective Percentage	1.76%
Unsecured Debt [Member] | Wells Fargo Term Loan [Member]
Debt Instrument [Line Items]
Repayments of Unsecured Debt	$ 300,000,000.0
Secured Debt [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Effective Percentage			4.60%
Secured Debt [Member] | Fixed Rate Debt Senior Notes [Member]
Debt Instrument [Line Items]
Debt Instrument, Maturity Date			Dec. 31, 2041
Debt Instrument, Interest Rate, Effective Percentage			4.60%
Debt Instrument, Face Amount			$ 489,595,000
Maturing July 2020, Three Property Mortgage [Member] | Secured Debt [Member]
Debt Instrument [Line Items]
Repayments of Secured Debt		$ 63,600,000
Number of apartment communities | ApartmentUnit		3
Maturing July 2020, Four Property Mortgage [Member] | Secured Debt [Member]
Debt Instrument [Line Items]
Repayments of Secured Debt		$ 72,200,000
Number of apartment communities | ApartmentUnit		4

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Financial Instruments and Derivatives - Additional Information (Details) $ / shares in Units, $ in Millions		9 Months Ended
		Sep. 30, 2020 USD ($) Contract $ / shares	Dec. 31, 2019 USD ($)
Derivative [Line Items]
Preferred Stock, Redemption Price Per Share | $ / shares	[1]	$ 50.00
Preferred Stock, Redemption Date		Oct. 01, 2026
Designated as Hedging Instrument | Interest Expense
Derivative [Line Items]
Change in fair value of interest rate derivatives included in AOCI and expected to be reclassified in the next 12 months		$ 1.1
Designated as Hedging Instrument | Interest Rate Swap [Member]
Derivative [Line Items]
Derivative, Number of Instruments Held | Contract		0
Fair Value, Measurements, Recurring [Member]
Derivative [Line Items]
Embedded Derivative, Fair Value of Embedded Derivative Asset		$ 21.9	$ 36.5
Fair Value, Measurements, Recurring [Member] | Other Assets [Member]
Derivative [Line Items]
Interest Rate Derivative Assets, at Fair Value			0.1
Conventional Variable Rate Debt [Member] | Minimum [Member]
Derivative [Line Items]
Debt Renewal Period		30 days
Conventional Variable Rate Debt [Member] | Maximum [Member]
Derivative [Line Items]
Debt Renewal Period		90 days
Fixed Rate Debt [Member]
Derivative [Line Items]
Notes Payable Excluding Interest Rate Swaps and Cap Agreements		$ 4,400.0	4,100.0
Notes Payable, Fair Value Disclosure		4,900.0	4,500.0
Floating Rate Debt [Member]
Derivative [Line Items]
Notes Payable Excluding Interest Rate Swaps and Cap Agreements		35.0	370.0
Notes Payable, Fair Value Disclosure		$ 35.0	$ 370.8

[1] The redemption price is the price at which the preferred stock is redeemable, at MAA’s option, for cash.

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Financial Instruments and Derivatives - Effect of Derivative Instruments on Consolidated Statement of Operations (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Derivative [Line Items]
Unrealized (loss) from the effective portion of derivative instruments		$ (5,562)		$ (13,444)
Derivative Instruments, Gain (Loss) Recognized in Income, Net			$ (14,603)	19,592
Designated as Hedging Instrument | Interest Expense
Derivative [Line Items]
Amount of Gain or (Loss) Reclassified from Accumulated OCI into Income (Effective Portion)	$ (279)	411	(810)	1,734
Designated as Hedging Instrument | Interest Rate Contract
Derivative [Line Items]
Unrealized (loss) from the effective portion of derivative instruments		(5,562)		(13,444)
Not Designated as Hedging Instrument | Interest Expense
Derivative [Line Items]
Derivative Instruments, Gain (Loss) Recognized in Income, Net	$ 1,342	$ 15,522	$ (14,603)	$ 19,592

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Shareholders' Equity of MAA - Additional Information (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019
Equity [Line Items]
Common stock, shares outstanding	114,369,812	114,065,859	114,246,393
Total common shares and operating partnership units outstanding	118,428,070	118,140,136
Proceeds from Stock Options Exercised, Net	$ 0.1	$ 1.0
At The Market Offering
Equity [Line Items]
Common stock shares sold	0	0
Remaining common stock to be issued	3,900,000
Maximum [Member] | At The Market Offering
Equity [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized	4,000,000.0
Equity Option
Equity [Line Items]
Stock Issued During Period, Shares, New Issues	918	24,256
Noncontrolling Interest
Equity [Line Items]
Common Shares Issuable Upon Conversion Of Convertible Stock	4,058,258	4,074,277
Employee Stock Option
Equity [Line Items]
Common stock shares, outstanding option	19,845	45,390

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Shareholders' Equity of MAA - Schedule of Cumulative Redeemable Preferred Stock (Details) - $ / shares		9 Months Ended		12 Months Ended
		Sep. 30, 2020		Dec. 31, 2019
Equity [Line Items]
Preferred Stock, Shares Outstanding		867,846		867,846
Preferred Stock, Liquidation Preference Per Share		$ 50.00	[1]	$ 50.00
Preferred Stock, Redemption Date		Oct. 01, 2026
Preferred Stock, Redemption Price Per Share	[2]	$ 50.00
Preferred Stock, Dividend Rate, Percentage		8.50%		8.50%
Preferred Stock, Dividend Rate, Per-Dollar-Amount		$ 4.25
Redeemable Preferred Stock [Member]
Equity [Line Items]
Preferred Stock, Shares Outstanding		867,846

[1] The total liquidation preference for the outstanding preferred stock is $43.4 million.

[2] The redemption price is the price at which the preferred stock is redeemable, at MAA’s option, for cash.

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Shareholders' Equity of MAA - Schedule of Cumulative Redeemable Preferred Stock (Parenthetical) (Details) $ in Millions	Sep. 30, 2020 USD ($)
M A A Equity [Abstract]
Preferred Stock, Liquidation Preference, Value	$ 43.4

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Partners' Capital of MAALP - Additional Information (Details) - USD ($) $ / shares in Units, $ in Millions	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019
Schedule Of Capital Structure [Line Items]
Operating partnership units outstanding	118,428,070	118,140,136
General Partners' Capital Account, Units Outstanding	114,369,812	114,065,859
Limited Partners' Capital Account, Units Outstanding	4,058,258	4,074,277
Preferred Stock, Shares Outstanding	867,846		867,846
Redeemable Preferred Stock [Member]
Schedule Of Capital Structure [Line Items]
Preferred Stock, Shares Outstanding	867,846
Noncontrolling Interest
Schedule Of Capital Structure [Line Items]
Common Shares Issuable Upon Conversion Of Convertible Stock	4,058,258	4,074,277
Limited Partners' Capital Account	$ 470.6	$ 529.7
Redeemable Capital Shares Par Or Stated Value Per Share	$ 115.95	$ 130.01
M A A L P
Schedule Of Capital Structure [Line Items]
Limited Liability Company (LLC) or Limited Partnership (LP), Managing Member or General Partner, Ownership Interest	96.60%	96.60%

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Commitments and Contingencies - Additional Information (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2020	Dec. 31, 2019
Loss Contingencies [Line Items]
Loss Contingency Accrual	$ 7.4	$ 8.6
Cleven Litigation Case [Member]
Loss Contingencies [Line Items]
Loss Contingency, Estimate of Possible Loss	54.6
Brown Litigation Case [Member]
Loss Contingencies [Line Items]
Loss Contingency, Estimate of Possible Loss	$ 8.4
Apartment Communities [Member]
Loss Contingencies [Line Items]
Lease expiration year	2074
Office Lease [Member]
Loss Contingencies [Line Items]
Lease expiration year	2028

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Commitments and Contingencies - Schedule of Operating Lease Obligations (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Loss Contingency [Abstract]
Operating Leases, Future Minimum Payments Due, Next Twelve Months	$ 707
Operating Leases, Future Minimum Payments, Due in Two Years	2,854
Operating Leases, Future Minimum Payments, Due in Three Years	2,885
Operating Leases, Future Minimum Payments, Due in Four Years	2,875
Operating Leases, Future Minimum Payments, Due in Five Years	2,853
Operating Leases, Future Minimum Payments, Due Thereafter	65,863
Operating Leases, Future Minimum Payments Due	78,037
Net present value adjustments	(45,856)
Operating Lease, Liability	$ 32,181	$ 33,100

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Segment Information - Additional Information (Details)	9 Months Ended
	Sep. 30, 2020 Community State Segment
Segment Reporting Information [Line Items]
Number of owned or owned interests of apartment communities | Community	299
Number of States in which Entity Operates | State	16
Number of reportable segments | Segment	2
Period properties owned and stabilized	12 months
Occupancy Level for Stabilized Communities	90.00%
Period Properties Stabilized	90 days
Same Store [Member]
Segment Reporting Information [Line Items]
Period properties owned and stabilized	12 months

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Segment Information - Revenues and NOI for Reportable Segment (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Segment Information
Total operating revenues	$ 423,199	$ 415,632	$ 1,254,323	$ 1,224,200
Net Operating Income	253,385	256,093	773,866	761,142
Depreciation and amortization	(127,679)	(124,684)	(381,257)	(371,417)
Other Cost and Expense, Operating	(12,691)	(13,899)	(39,064)	(41,195)
General and administrative expenses	(11,360)	(10,225)	(35,181)	(32,960)
Interest expense	(41,010)	(44,513)	(126,610)	(136,149)
Gain (loss) on sale of depreciable real estate assets	20	1,000	(7)	987
Gain on sale of non-depreciable real estate assets	1,366		995	9,260
Other non-operating income (expense)	242	18,800	(13,647)	23,494
Income tax expense	(665)	(1,491)	(2,532)	(2,814)
Gain (loss) from real estate joint ventures	428	378	1,153	1,210
Net income attributable to noncontrolling interests	(2,126)	(2,814)	(6,096)	(7,336)
Preferred Stock Dividends, Income Statement Impact	(922)	(922)	(2,766)	(2,766)
Net income available for MAA common shareholders	58,988	77,723	168,854	201,456
Same Store [Member]
Segment Information
Revenue from Contract with Customer, Including Assessed Tax	394,556	386,356	1,170,844	1,137,967
Other Operating Income	3,044	3,244	9,012	9,926
Total operating revenues	397,600	389,600	1,179,856	1,147,893
Net Operating Income	238,702	241,362	730,702	717,216
Non-Same Store and Other
Segment Information
Revenue from Contract with Customer, Including Assessed Tax	25,465	25,917	74,204	75,825
Other Operating Income	134	115	263	482
Total operating revenues	25,599	26,032	74,467	76,307
Net Operating Income	$ 14,683	$ 14,731	$ 43,164	$ 43,926

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Segment Information - Assets for Reportable Segment (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	$ 11,128,704	$ 11,230,450
Same Store [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	9,740,808	9,975,880
Non-Same Store and Other
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	1,198,693	1,049,029
Corporate assets
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	$ 189,203	$ 205,541

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Real Estate Acquisitions and Dispositions - Schedule of Real Estate Asset Acquisitions and Dispositions (Details) - Land [Member]	9 Months Ended
	Sep. 30, 2020 a
Georgetown [Member] | Austin, TX [Member]
Business Acquisitions and Dispositions [Line Items]
Area of Land	22
Acquisition Date	2020-01
Colonial Promenade [Member] | Huntsville, AL
Business Acquisitions and Dispositions [Line Items]
Area of Land	27
Disposal Date	2020-09