Mid-America Apartment Communities (MAA) 10-K 18 Feb 21 2020 FY Annual report Financial data

Document and Entity Information

Document and Entity Information - USD ($) $ in Billions	12 Months Ended
	Dec. 31, 2020	Feb. 15, 2021	Jun. 30, 2020
Document Information [Line Items]
Document Type	10-K
Amendment Flag	false
Document Period End Date	Dec. 31, 2020
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	FY
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		114,389,362
Entity Shell Company	false
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Interactive Data Current	Yes
Entity Well-known Seasoned Issuer	Yes
Entity Public Float			$ 9.1
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 Avenue
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 Annual Report	true
ICFR Auditor Attestation Flag	true
Document Transition Report	false
Documents Incorporated By Reference	Documents Incorporated by Reference Portions of the proxy statement for the annual shareholders meeting of Mid-America Apartment Communities, Inc. to be held on May 18, 2021 are incorporated by reference into Part III of this report. We expect to file our proxy statement within 120 days after December 31, 2020.
Common Stock [Member]
Document Information [Line Items]
Trading Symbol	MAA
Security Exchange Name	NYSE
Title of 12(b) Security	Common Stock, par value $.01 per share
Cumulative Preferred Stock [Member]
Document Information [Line Items]
Trading Symbol	MAA*I
Security Exchange Name	NYSE
Title of 12(b) Security	8.50% Series I Cumulative Redeemable Preferred Stock, $.01 par value per share
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 Voluntary Filers	No
Entity Interactive Data Current	Yes
Entity Well-known Seasoned Issuer	No
Entity Emerging Growth Company	false
Entity Small Business	false
Entity File Number	333-190028-01
Entity Incorporation, State or Country Code	TN
Entity Tax Identification Number	62-1543816
Entity Address, Address Line One	6815 Poplar Avenue
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
ICFR Auditor Attestation Flag	false

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands		Dec. 31, 2020	Dec. 31, 2019
Assets
Land		$ 1,929,181	$ 1,905,757
Buildings and improvements and other		12,065,244	11,841,978
Development and capital improvements in progress		283,477	116,424
Real Estate Investment Property, at Cost		14,277,902	13,864,159
Less: Accumulated depreciation		(3,415,105)	(2,955,253)
Real Estate Investment Property, Net		10,862,797	10,908,906
Undeveloped land		60,993	34,548
Investment in real estate joint venture		43,325	43,674
Real estate assets, net		10,967,115	10,987,128
Cash and cash equivalents		25,198	20,476
Restricted cash		10,417	50,065
Other assets		192,061	172,781
Total assets		11,194,791	11,230,450
Liabilities:
Unsecured notes payable		4,077,373	3,828,201
Secured notes payable		485,339	626,397
Accrued expenses and other liabilities		528,274	472,262
Total liabilities		5,090,986	4,926,860
Unsecured notes payable		4,077,373	3,828,201
Due to general partner		19,000	19,000
Redeemable common stock		15,397	14,131
Shareholders’ equity:
Preferred Stock, Value, Outstanding		9	9
Common stock	[1]	1,141	1,140
Additional paid-in capital		7,176,793	7,166,073
Accumulated distributions in excess of net income		(1,294,182)	(1,085,479)
Accumulated other comprehensive loss		(12,128)	(13,178)
Total MAA shareholders’ equity		5,871,633	6,068,565
Noncontrolling interests - Operating Partnership units		206,927	214,647
Total Company’s shareholders’ equity		6,078,560	6,283,212
Noncontrolling interests - consolidated real estate entities		9,848	6,247
Total equity		6,088,408	6,289,459
Total liabilities and equity		11,194,791	11,230,450
Operating Partnership capital:
Accumulated other comprehensive loss		(12,128)	(13,178)
Noncontrolling interests - consolidated real estate entities		9,848	6,247
Total equity		6,088,408	6,289,459
Limited Partner [Member]
Assets
Land		1,929,181	1,905,757
Buildings and improvements and other		12,065,244	11,841,978
Development and capital improvements in progress		283,477	116,424
Real Estate Investment Property, at Cost		14,277,902	13,864,159
Less: Accumulated depreciation		(3,415,105)	(2,955,253)
Real Estate Investment Property, Net		10,862,797	10,908,906
Investment in real estate joint venture		43,325	43,674
Real estate assets, net		10,967,115	10,987,128
Cash and cash equivalents		25,198	20,476
Restricted cash		10,417	50,065
Other assets		192,061	172,781
Total assets		11,194,791	11,230,450
Undeveloped land		60,993	34,548
Liabilities:
Unsecured notes payable		4,077,373	3,828,201
Secured notes payable		485,339	626,397
Accrued expenses and other liabilities		528,274	472,262
Total liabilities		5,091,005	4,926,879
Unsecured notes payable		4,077,373	3,828,201
Due to general partner		19	19
Redeemable common stock		15,397	14,131
Shareholders’ equity:
Accumulated other comprehensive loss		(12,496)	(13,584)
Noncontrolling interests - consolidated real estate entities		9,848	6,247
Total equity		6,088,389	6,289,440
Total liabilities and equity		11,194,791	11,230,450
Operating Partnership capital:
Preferred Units, Preferred Partners' Capital Accounts		66,840	66,840
General Partners' Capital Account	[2]	5,817,270	6,015,290
Limited Partners' Capital Account	[2]	206,927	214,647
Accumulated other comprehensive loss		(12,496)	(13,584)
Total operating partners’ capital		6,078,541	6,283,193
Noncontrolling interests - consolidated real estate entities		9,848	6,247
Total equity		$ 6,088,389	$ 6,289,440
[1]
[2]

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - $ / shares	12 Months Ended
	Dec. 31, 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	114,373,727	114,246,393
Common stock, shares outstanding	114,373,727	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	$ 50
Redeemable stock, shares issued and outstanding	121,534	107,162
General Partners' Capital Account, Units Outstanding	114,373,727	114,246,393
Limited Partners' Capital Account, Units Outstanding	4,057,657	4,067,174
Limited Partner [Member]
Redeemable stock, shares issued and outstanding	121,534	107,162
General Partners' Capital Account, Units Outstanding	114,373,727	114,246,393
Limited Partners' Capital Account, Units Outstanding	4,057,657	4,067,174
Preferred Units, Issued	867,846	867,846
Preferred Units, Outstanding	867,846	867,846

Consolidated Statements of Oper

Consolidated Statements of Operations - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Revenues:
Rental and other property revenues	$ 1,677,984	$ 1,641,017	$ 1,571,346
Expenses:
Operating expenses, excluding real estate taxes and insurance	387,966	377,453	371,095
Real estate taxes and insurance	252,505	235,392	223,493
Depreciation and amortization	510,842	496,843	489,759
Total property operating expenses	1,151,313	1,109,688	1,084,347
Property management expenses	52,300	55,011	47,633
General and administrative expenses	46,858	43,845	38,855
Merger and integration related expenses	0	0	9,112
Interest expense	167,562	179,847	173,594
(Gain) loss on sale of depreciable real estate assets	(9)	(80,988)	39
Gain on sale of non-depreciable real estate assets	(1,024)	(12,047)	(4,532)
Other non-operating income	(4,857)	(22,999)	(9,503)
Income before income tax expense	265,841	368,660	231,801
Income tax expense	(3,327)	(3,696)	(2,611)
Income from continuing operations before real estate joint venture activity	262,514	364,964	229,190
Income from real estate joint venture	1,501	1,654	1,832
Net income	264,015	366,618	231,022
Net income attributable to noncontrolling interests	9,053	12,807	8,123
Net income available for shareholders	254,962	353,811	222,899
Dividends to MAA Series I preferred shareholders	3,688	3,688	3,688
Net income available for MAA common shareholders	$ 251,274	$ 350,123	$ 219,211
Earnings per common share - basic:
Net income available for MAA common shareholders	$ 2.20	$ 3.07	$ 1.93
Earnings per common share - diluted:
Net income available for MAA common shareholders	$ 2.19	$ 3.07	$ 1.93
Limited Partner [Member]
Revenues:
Rental and other property revenues	$ 1,677,984	$ 1,641,017	$ 1,571,346
Expenses:
Operating expenses, excluding real estate taxes and insurance	387,966	377,453	371,095
Real estate taxes and insurance	252,505	235,392	223,493
Depreciation and amortization	510,842	496,843	489,759
Total property operating expenses	1,151,313	1,109,688	1,084,347
Property management expenses	52,300	55,011	47,633
General and administrative expenses	46,858	43,845	38,855
Merger and integration related expenses	0	0	9,112
Interest expense	167,562	179,847	173,594
(Gain) loss on sale of depreciable real estate assets	(9)	(80,988)	39
Gain on sale of non-depreciable real estate assets	(1,024)	(12,047)	(4,532)
Other non-operating income	(4,857)	(22,999)	(9,503)
Income before income tax expense	265,841	368,660	231,801
Income tax expense	(3,327)	(3,696)	(2,611)
Income from continuing operations before real estate joint venture activity	262,514	364,964	229,190
Income from real estate joint venture	1,501	1,654	1,832
Net income	264,015	366,618	231,022
Dividends to preferred unitholders	3,688	3,688	3,688
Net income available for MAALP common unitholders	260,327	362,794	227,334
Net income attributable to noncontrolling interests		136
Net income available for MAALP unitholders	264,015	366,482	231,022
Net income available for MAALP common unitholders	$ 260,327	$ 362,794	$ 227,334
Earnings per common share - basic:
Net income available for MAA common shareholders	$ 2.20	$ 3.07	$ 1.93
Net income available for MAALP common unitholders	2.20	3.07	1.93
Earnings per common share - diluted:
Net income available for MAA common shareholders	2.20	3.07	1.93
Net income available for MAALP common unitholders	$ 2.20	$ 3.07	$ 1.93

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Net income	$ 264,015	$ 366,618	$ 231,022
Other comprehensive income (loss):
Unrealized loss from derivative instruments		(11,676)	(751)
Adjustment for net losses (gains) reclassified to net income from derivative instruments	1,088	(1,747)	(1,938)
Total comprehensive income	265,103	353,195	228,333
Less: Comprehensive income attributable to noncontrolling interests	(9,091)	(12,350)	(8,036)
Comprehensive income	256,012	340,845	220,297
Limited Partner [Member]
Net income	264,015	366,618	231,022
Other comprehensive income (loss):
Unrealized loss from derivative instruments		(11,676)	(751)
Adjustment for net losses (gains) reclassified to net income from derivative instruments	1,088	(1,747)	(1,938)
Total comprehensive income	265,103	353,195	228,333
Less: Comprehensive income attributable to noncontrolling interests		(136)
Comprehensive income	$ 265,103	$ 353,059	$ 228,333

Consolidated Statements of Equi

Consolidated Statements of Equity - USD ($) $ in Thousands	Total	Limited Partner [Member]	General Partner [Member]	AOCI Attributable to Noncontrolling Interest [Member]	Noncontrolling Interests-Consolidated Real Estate Entities [Member]	Redeemable Common Stock [Member]	Revision of Prior Period, Accounting Standards Update, Adjustment [Member]General Partner [Member]	Revision of Prior Period, Accounting Standards Update, Adjustment [Member]AOCI Attributable to Noncontrolling Interest [Member]	Preferred Stock [Member]	Common Stock [Member]	Additional Paid-In Capital [Member]	Accumulated Distributions in Excess Of Net Income [Member]	Accumulated Distributions in Excess Of Net Income [Member]Revision of Prior Period, Accounting Standards Update, Adjustment [Member]	Accumulated Other Comprehensive (Loss) Income [Member]	Accumulated Other Comprehensive (Loss) Income [Member]Revision of Prior Period, Accounting Standards Update, Adjustment [Member]	Noncontrolling Interests Operating Partnership [Member]	Noncontrolling Interests-Consolidated Real Estate Entities [Member]	Redeemable Common Stock [Member]
Beginning Balance at Dec. 31, 2017	$ 6,573,894								$ 9	$ 1,134	$ 7,121,112	$ (784,500)		$ 2,157		$ 231,676	$ 2,306	$ 10,408
Beginning Balance, Shares at Dec. 31, 2017									868,000	113,540,000
Net income	231,022	$ 8,123										222,899				8,123
Other comprehensive Income (loss) - derivative instruments	(2,689)			$ (2,689)										$ (2,602)		(87)
Issuance and registration of common shares	(263)									$ 1	(264)							1,482
Issuance and registration of common shares, Shares										142,000
Shares repurchased and retired	(2,921)		$ (2,921)								(2,921)
Shares repurchased and retired, Shares										(34,000)
Exercise of stock options	916		916								916
Exercise of stock options, Shares										18,000
Shares issued in exchange for common units										$ 1	4,443					(4,444)
Shares issued in exchange for common units, Shares										80,000
Shares issued in exchange for redeemable stock	1,915		1,915			$ (1,915)					1,915							(1,915)
Redeemable stock fair market value adjustment	561		561			(561)						$ 561						(561)
Adjustment for noncontrolling interests in Operating Partnership		$ (153)	$ 153								$ 66					$ (66)
Cumulative adjustment due to adoption of ASU 2017-12													$ (233)		$ 233
Accounting Standards Update [Extensible List]		us-gaap:AccountingStandardsUpdate201712Member	us-gaap:AccountingStandardsUpdate201712Member	us-gaap:AccountingStandardsUpdate201712Member							us-gaap:AccountingStandardsUpdate201712Member	us-gaap:AccountingStandardsUpdate201712Member		us-gaap:AccountingStandardsUpdate201712Member		us-gaap:AccountingStandardsUpdate201712Member
Amortization of unearned compensation	12,903										$ 12,903
Dividends on preferred stock	(3,688)											$ (3,688)
Dividends on common stock	(424,302)											(424,302)
Dividends on noncontrolling interests units	(15,159)															$ (15,159)
Ending Balance at Dec. 31, 2018	6,372,189								$ 9	$ 1,136	7,138,170	(989,263)		$ (212)		220,043	2,306	9,414
Ending Balance, Shares at Dec. 31, 2018									868,000	113,746,000
Partners' Capital at Dec. 31, 2017	6,573,875	$ 231,676	$ 6,270,758	$ 2,295	$ 2,306	10,408						66,840
Net Income (Loss) Allocated to General Partners			219,211
Dividends, Preferred Stock, Cash	3,688											3,688
Issuance of units	(264)		(264)			1,482
General partner units issued in exchange for limited partner units		(4,444)	4,444
Partners' Capital at Dec. 31, 2018							$ (233)	$ 233
Amortization of unearned compensation	12,904		12,904
Dividends, Preferred Stock, Cash	(3,688)
Distributions to common unitholders	(439,461)	(15,159)	(424,302)
Partners' Capital at Dec. 31, 2018	6,372,170	220,043	6,083,142	(161)	2,306	9,414						66,840
Net income	366,618	12,671			136							353,811				12,671	136
Other comprehensive Income (loss) - derivative instruments	(13,423)			(13,423)										(12,966)		(457)
Issuance and registration of common shares	20,500									$ 4	20,496							1,651
Issuance and registration of common shares, Shares										338,000
Shares repurchased and retired	(3,724)		(3,724)								(3,724)
Shares repurchased and retired, Shares										(37,000)
Exercise of stock options	2,881		2,881								2,881
Exercise of stock options, Shares										48,000
Shares issued in exchange for common units											2,366					(2,366)
Shares issued in exchange for common units, Shares										44,000
Shares issued in exchange for redeemable stock	575		575			(575)					575							(575)
Redeemable stock fair market value adjustment	(3,641)		(3,641)			3,641						(3,641)						3,641
Adjustment for noncontrolling interests in Operating Partnership	6,126	359	(359)		6,126						(816)					816
Amortization of unearned compensation	14,684										14,684
Dividends on preferred stock	(3,688)											(3,688)
Dividends on common stock	(442,698)											(442,698)
Dividends on noncontrolling interests units	(16,060)															(16,060)
Acquisition of noncontrolling interest	(10,880)		(8,559)		(2,321)						(8,559)						(2,321)
Contributions from noncontrolling interest	6,126																6,126
Ending Balance at Dec. 31, 2019	6,289,459								$ 9	$ 1,140	7,166,073	(1,085,479)		(13,178)		214,647	6,247	14,131
Ending Balance, Shares at Dec. 31, 2019									868,000	114,139,000
Net Income (Loss) Allocated to General Partners			350,123
Dividends, Preferred Stock, Cash	3,688											3,688
Issuance of units	20,500		20,500			1,651
General partner units issued in exchange for limited partner units		(2,366)	2,366
Partners' Capital at Dec. 31, 2019	6,289,440	214,647	6,015,290	(13,584)	6,247	14,131						66,840
Amortization of unearned compensation	14,684		14,684
Dividends, Preferred Stock, Cash	(3,688)
Distributions to common unitholders	(458,758)	(16,060)	(442,698)
Net income	264,015	9,053										254,962				9,053
Other comprehensive Income (loss) - derivative instruments	1,088			1,088										1,050		38
Issuance and registration of common shares	(208)									$ 1	(209)							1,629
Issuance and registration of common shares, Shares										157,000
Shares repurchased and retired	(5,657)		(5,657)								(5,657)
Shares repurchased and retired, Shares										(55,000)
Exercise of stock options	$ 71		71								71
Exercise of stock options, Shares	918									1,000
Shares issued in exchange for common units											502					(502)
Shares issued in exchange for common units, Shares										10,000
Redeemable stock fair market value adjustment	$ 363		363			(363)						363						(363)
Adjustment for noncontrolling interests in Operating Partnership	3,601	63	(63)		3,601						(25)					25
Amortization of unearned compensation	16,038										16,038
Dividends on preferred stock	(3,688)											(3,688)
Dividends on common stock	(460,340)											(460,340)
Dividends on noncontrolling interests units	(16,334)															(16,334)
Contributions from noncontrolling interest	3,601																3,601
Ending Balance at Dec. 31, 2020	6,088,408								$ 9	$ 1,141	$ 7,176,793	(1,294,182)		$ (12,128)		$ 206,927	$ 9,848	$ 15,397
Ending Balance, Shares at Dec. 31, 2020									868,000	114,252,000
Net Income (Loss) Allocated to General Partners			251,274
Dividends, Preferred Stock, Cash	3,688											3,688
Issuance of units	(208)		(208)			1,629
General partner units issued in exchange for limited partner units		(502)	502
Partners' Capital at Dec. 31, 2020	6,088,389	206,927	5,817,270	$ (12,496)	$ 9,848	$ 15,397						$ 66,840
Amortization of unearned compensation	16,038		16,038
Dividends, Preferred Stock, Cash	(3,688)
Distributions to common unitholders	$ (476,674)	$ (16,334)	$ (460,340)

Consolidated Statements of Eq_2

Consolidated Statements of Equity (Parenthetical) - $ / shares	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Dividends Declared Per Share of Common Stock (in dollars per share)	$ 4.0250	$ 3.8800	$ 3.7275
Dividends Declared Per Share of Non Controlling Interests (in dollars per share)	4.0250	3.8800	3.7275
Limited Partner [Member]
Distribution Made to Limited Partner, Distributions Declared, Per Unit	$ 4.0250	$ 3.8800	$ 3.7275

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Cash flows from operating activities:
Net income	$ 264,015	$ 366,618	$ 231,022
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	511,678	497,790	490,995
(Gain) loss on sale of depreciable real estate assets	(9)	(80,988)	39
Gain on sale of non-depreciable real estate assets	(1,024)	(12,047)	(4,532)
(Gain) loss on embedded derivative in preferred shares	(2,562)	(17,886)	2,576
Stock compensation expense	14,329	13,654	12,444
Amortization of debt issuance costs, discounts and premiums	4,960	5,778	(4,990)
Net change in operating accounts and other operating activities	32,562	8,501	6,738
Net cash provided by operating activities	823,949	781,420	734,292
Cash flows from investing activities:
Purchases of real estate and other assets	(56,965)	(105,106)	(129,487)
Capital improvements, development and other	(426,941)	(303,097)	(254,715)
Distributions from real estate joint ventures	349	507	775
Contributions to affiliates	(5,349)	(5,391)	(2,905)
Proceeds from disposition of real estate assets	4,175	174,814	19,982
Net cash used in investing activities	(484,731)	(238,273)	(366,350)
Cash flows from financing activities:
Proceeds from lines of credit	255,000	565,000	1,540,000
Repayments of lines of credit	(255,000)	(1,105,000)	(1,490,000)
Net proceeds from commercial paper	102,000	70,000
Proceeds from notes payable	447,593	1,059,289	869,630
Principal payments on notes payable	(441,108)	(657,619)	(878,610)
Payment of deferred financing costs	(4,217)	(14,274)	(6,060)
Distributions to noncontrolling interests	(16,243)	(15,939)	(15,079)
Distributions paid on common shares/units	(457,355)	(437,743)	(419,849)
Distributions paid on preferred shares/units	(3,688)	(3,688)	(3,688)
Net change in other financing activities	(1,126)	15,695	(1,480)
Net cash used in financing activities	(374,144)	(524,279)	(405,136)
Net (decrease) increase in cash, cash equivalents and restricted cash	(34,926)	18,868	(37,194)
Cash, cash equivalents and restricted cash, beginning of period	70,541	51,673	88,867
Cash, cash equivalents and restricted cash, end of period	35,615	70,541	51,673
Reconciliation of cash, cash equivalents and restricted cash:
Cash and cash equivalents	25,198	20,476	34,259
Restricted cash	10,417	50,065	17,414
Cash, cash equivalents and restricted cash, end of period	35,615	70,541	51,673
Supplemental disclosure of cash flow information:
Interest paid	165,098	169,743	184,834
Income taxes paid	2,549	2,546	2,550
Supplemental disclosure of noncash investing and financing activities:
Conversion of OP Units to shares of common stock	502	2,366	4,443
Accrued construction in progress	19,625	9,298	8,581
Interest capitalized	6,912	2,889	2,047
Limited Partner [Member]
Cash flows from operating activities:
Net income	264,015	366,618	231,022
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	511,678	497,790	490,995
(Gain) loss on sale of depreciable real estate assets	(9)	(80,988)	39
Gain on sale of non-depreciable real estate assets	(1,024)	(12,047)	(4,532)
(Gain) loss on embedded derivative in preferred shares	(2,562)	(17,886)	2,576
Stock compensation expense	14,329	13,654	12,444
Amortization of debt issuance costs, discounts and premiums	4,960	5,778	(4,990)
Net change in operating accounts and other operating activities	32,562	8,501	6,738
Net cash provided by operating activities	823,949	781,420	734,292
Cash flows from investing activities:
Purchases of real estate and other assets	(56,965)	(105,106)	(129,487)
Capital improvements, development and other	(426,941)	(303,097)	(254,715)
Distributions from real estate joint ventures	349	507	775
Contributions to affiliates	(5,349)	(5,391)	(2,905)
Proceeds from disposition of real estate assets	4,175	174,814	19,982
Net cash used in investing activities	(484,731)	(238,273)	(366,350)
Cash flows from financing activities:
Proceeds from lines of credit	255,000	565,000	1,540,000
Repayments of lines of credit	(255,000)	(1,105,000)	(1,490,000)
Net proceeds from commercial paper	102,000	70,000
Proceeds from notes payable	447,593	1,059,289	869,630
Principal payments on notes payable	(441,108)	(657,619)	(878,610)
Payment of deferred financing costs	(4,217)	(14,274)	(6,060)
Distributions paid on common shares/units	(473,598)	(453,682)	(434,928)
Distributions paid on preferred shares/units	(3,688)	(3,688)	(3,688)
Net change in other financing activities	(1,126)	15,695	(1,480)
Net cash used in financing activities	(374,144)	(524,279)	(405,136)
Net (decrease) increase in cash, cash equivalents and restricted cash	(34,926)	18,868	(37,194)
Cash, cash equivalents and restricted cash, beginning of period	70,541	51,673	88,867
Cash, cash equivalents and restricted cash, end of period	35,615	70,541	51,673
Reconciliation of cash, cash equivalents and restricted cash:
Cash and cash equivalents	25,198	20,476	34,259
Restricted cash	10,417	50,065	17,414
Cash, cash equivalents and restricted cash, end of period	35,615	70,541	51,673
Supplemental disclosure of cash flow information:
Interest paid	165,098	169,743	184,834
Income taxes paid	2,549	2,546	2,550
Supplemental disclosure of noncash investing and financing activities:
Accrued construction in progress	19,625	9,298	8,581
Interest capitalized	$ 6,912	$ 2,889	$ 2,047

Organization and Summary of Sig

Organization and Summary of Significant Accounting Policies	12 Months Ended
	Dec. 31, 2020
Consolidation And Basis Of Presentation And Significant Accounting Policies [Abstract]
Organization and Summary of Significant Accounting Policies	1. Organization and Summary of 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 December 31, 2020, MAA owned 114,373,727 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 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 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 interests, treasury shares, accumulated other comprehensive loss 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 interests, accumulated other comprehensive loss 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 December 31, 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 December 31, 2020, the Company had eight development communities under construction totaling 2,607 apartment units once complete. Total expected costs for the eight development projects are $595.0 million, of which $335.6 million had been incurred through December 31, 2020. The Company expects to complete five of these developments in 2021, two development s in 2022 and one development in 2023 . As of December 31, 2020 , thirty-two of the Company’s apartment communities included retail components . The Company’s apartment communities were located across 16 states and the District of Columbia as of December 31, 2020 . Basis of Presentation and Principles of Consolidation The accompanying 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 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 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 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 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, $2.3 million of expenses and $4.1 million of income previously reported in the “General and administrative expenses” line item for the years ended December 31, 2019 and 2018, respectively, have been reclassified to the “Other non-operating income” line item of the Consolidated Statements of Operations in this report. Noncontrolling Interests As of December 31, 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 three 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. During the year ended December 31, 2020, the Company acquired a partial ownership interest in one consolidated real estate entity. As of December 31, 2020, the consolidated assets and liabilities of the Company’s consolidated real estate entities with a noncontrolling interest were $128.9 million and $8.1 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. Use of Estimates Management has made a number of estimates and assumptions relating to the reporting of assets and liabilities, the disclosure of contingent assets and liabilities, and the reported amounts of revenues and expenses to prepare these financial statements and notes in conformity with GAAP. Actual results could differ from those estimates. Rental Costs Costs associated with rental activities are expensed as incurred and include advertising expenses, which were $23.9 million, $20.8 million and $20.2 million for the years ended December 31, 2020, 2019 and 2018, respectively. Real Estate Assets and Depreciation and Amortization Real estate assets are carried at depreciated cost and consist of land, buildings and improvements and other and development and capital improvements in progress (see “Development Costs” below). Repairs and maintenance costs are expensed as incurred, while significant improvements, renovations and recurring capital replacements are capitalized and depreciated over their estimated useful lives. Recurring capital replacements typically include scheduled carpet replacement, new roofs, HVAC units, plumbing, concrete, masonry and other paving, pools and various exterior building improvements. In addition to these costs, the Company also capitalizes salary costs directly identifiable with renovation work. These expenditures extend the useful life of the property and increase the property’s fair market value. The cost of interior painting and blinds are typically expensed as incurred. Depreciation is computed on a straight-line basis over the estimated useful lives of the related assets, which range from three to 40 years. The line item “Buildings and improvements and other” in the Consolidated Balance Sheets includes land improvements and buildings, which have a useful life ranging from five to 40 years, as well as furniture, fixtures and equipment, which have a useful life of three to five years. Development Costs Development projects and the related carrying costs, including interest, property taxes, insurance and allocated direct development salary costs during the construction period, are capitalized and reported in the accompanying Consolidated Balance Sheets as “Development and capital improvements in progress” during the construction period. Interest is capitalized in accordance with accounting standards governing the capitalization of interest. Upon completion and certification for occupancy of individual buildings or floors within a development, amounts representing the completed portion of total estimated development costs for the project are transferred to “Buildings and improvements and other” as real estate held for investment. Capitalization of interest, property taxes, insurance and allocated direct development salary costs cease upon the transfer. The assets are depreciated over their estimated useful lives. Total capitalized costs (including capitalized interest, salaries and real estate taxes) during the years ended December 31, 2020, 2019 and 2018 were $12.7 million, $6.5 million and $4.2 million, respectively. Certain costs associated with the lease-up of development projects, including cost of model units, furnishings and signs, are capitalized and amortized over their respective estimated useful lives. All other costs relating to renting development projects are expensed as incurred. Acquisition of Real Estate Assets In accordance with Accounting Standards Codification (“ASC”) Topic 805, Business Combinations The purchase price of an acquired property is allocated based on the relative fair value of the individual components as a proportion of the total assets acquired. The Company allocates the cost of the tangible assets of an acquired property by valuing the building as if it were vacant, based on management’s determination of the relative fair values of these assets. Management determines the as-if-vacant fair value of a building using methods similar to those used by independent appraisers. These methods include using stabilized net operating income, or NOI, and market specific capitalization and discount rates. In allocating the cost of identified intangible assets of an acquired property, the in-place leases are valued based on current rent rates and time and cost to lease a unit. Management concluded that the residential leases acquired in connection with each of its property acquisitions approximate at-market rates since the residential lease terms generally do not extend beyond one year. For residential leases, the fair value of the in-place leases and resident relationships is amortized over six months, which represents the estimated remaining term of the tenant leases. For retail and commercial leases, the fair value of in-place leases and tenant relationships is amortized over the remaining term of the leases. The net amount of these lease intangibles included in “Other assets” totaled $1.3 million and $2.6 million as of December 31, 2020 and 2019, respectively. Impairment of Long-lived Assets The Company accounts for long-lived assets in accordance with the provisions of accounting standards for the impairment or disposal of long-lived assets. Management periodically evaluates long-lived assets, including investments in real estate, for indicators that would suggest that the carrying amount of the assets may not be recoverable. The judgments regarding the existence of such indicators are based on factors such as operating performance, market conditions and legal factors. Long-lived assets, such as real estate assets, equipment and purchased intangibles subject to amortization, are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable. Recoverability of assets to be held and used is measured by a comparison of the carrying amount of an asset to estimated undiscounted future cash flows expected to be generated by the asset. If the carrying amount of an asset exceeds its estimated future cash flows, an impairment charge is recognized for the amount by which the carrying amount of the asset exceeds the fair value of the asset. Assets to be disposed of are separately presented in the Consolidated Balance Sheets, are reported at the lower of the carrying amount or fair value less costs to sell and are no longer depreciated. The assets and liabilities of a disposed group or a property classified as held for sale are presented separately in the appropriate asset and liability sections of the Consolidated Balance Sheets. Undeveloped Land Undeveloped land includes sites intended for future multifamily developments, sites for future commercial development and sites intended for residential use, which are carried at the lower of cost or fair value in accordance with GAAP. Any costs incurred prior to commencement of pre-development activities are expensed as incurred. 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 each 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 $43.3 million and $43.7 million as of December 31, 2020 and 2019, respectively. As of December 31, 2020 and 2019, the Company’s investments in the technology-focused limited partnerships were $23.0 million and $13.1 million, respectively, and are included in “Other assets” in the accompanying Consolidated Balance Sheets. As of December 31, 2020, the Company was committed until February 2025 to make additional capital contributions totaling $19.2 million if and when called by the general partners of the limited partnerships. Cash and Cash Equivalents Investments in money market accounts and certificates of deposit with original maturities of three months or less are considered to be cash equivalents. Restricted Cash Restricted cash consists of security deposits required to be held separately, escrow deposits held by lenders for property taxes, insurance, debt service and replacement reserves, and exchanges under Section 1031(b) of the Internal Revenue Code of 1986, as amended, or the Code. Section 1031(b) exchanges are presented within cash, cash equivalents and restricted cash reported in the Consolidated Statements of Cash Flows. Other Assets Other assets consist primarily of receivables and deposits from residents, the value of derivative contracts, right-of-use lease assets, investments in limited partnerships, deferred rental concessions, deferred financing costs relating to a revolving credit facility and other prepaid expenses. Also included in other assets are the fair market value of in-place leases and resident relationships, net of accumulated amortization. Accrued Expenses and Other Liabilities Accrued expenses consist of accrued dividends payable, accrued real estate taxes, accrued interest payable, accrued loss contingencies (see Note 11), accounts payable, right-of-use lease liabilities, security deposits not related to restricted cash, other accrued expenses, and unearned income. Significant accruals include accrued dividends payable of $121.4 million and $118.3 million as of December 31, 2020 and 2019, respectively; accrued real estate taxes of $140.6 million and $131.9 million as of December 31, 2020 and 2019, respectively; unearned income of $48.8 million and $42.0 million as of December 31, 2020 and 2019, respectively; accrued loss contingencies of $5.3 million and $8.6 million as of December 31, 2020 and 2019, respectively; security deposits of $21.6 million and $19.4 million as of December 31, 2020 and 2019, respectively; and accrued interest payable of $24.8 million and $21.4 million as of December 31, 2020 and 2019, respectively. Income Taxes MAA has elected to be taxed as a REIT under the Code and intends to continue to operate in such a manner. The current and continuing qualification as a REIT depends on MAA’s ability to meet the various requirements imposed by the Code, which are related to organizational structure, distribution levels, diversity of stock ownership and certain requirements with respect to the nature and diversity of MAA’s assets and sources of MAA’s gross income. As long as MAA qualifies for taxation as a REIT, it will generally not be subject to United States federal corporate income tax on its taxable income that is currently distributed to shareholders. This treatment substantially eliminates the “double taxation” (i.e., income taxation at both the corporate and shareholder levels) that generally results from an investment in a corporation. Even if MAA qualifies as a REIT, MAA may be subject to United States federal income and excise taxes in certain situations, such as if MAA fails to distribute timely all of its taxable income with respect to a taxable year. MAA also will be required to pay a 100% tax on any net income on non-arm’s length transactions between MAA and one of its taxable REIT subsidiaries, or TRS. Furthermore, MAA and its shareholders may be subject to state or local taxation in various state or local jurisdictions, including those in which MAA transacts business or its shareholders reside, and the applicable state and local tax laws may not conform to the United States federal income tax treatment. Any taxes imposed on MAA would reduce its operating cash flows and net income. The Company has elected TRS status for certain of its corporate subsidiaries. As a result, the TRS incur both federal and state income taxes on any taxable income after consideration of any net operating losses. The TRS use the liability method of accounting for income taxes. Deferred income tax assets and liabilities are recognized for future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which those temporary differences are expected to be recovered or settled. The effect on deferred tax assets and liabilities from a change in tax rate is recognized in earnings in the period of the enactment date. A valuation allowance is provided when it is more likely than not that all or some portion of the deferred tax assets will not be realized. The Company recognizes liabilities for uncertain income tax positions based on a two-step process. The first step is to evaluate the tax position for recognition by determining if the weight of available evidence indicates that it is more likely than not that the position will be sustained on audit, including resolution of related appeals or litigation processes, if any. The second step requires the Company to estimate and measure the tax benefit as the largest amount that is more likely than not to be realized upon ultimate settlement. See Note 7 for additional disclosures regarding income taxes. Fair Value Measurements The Company applies the guidance in ASC Topic 820, Fair Value Measurements and Disclosures 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 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 13. Revenue from Contracts with Customers 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 December 31, 2020 and December 31, 2019 , right-of-use assets recorded within “Other assets” totaled $49.4 million and $53.8 million , respectively, and related lease obligations recorded within “Accrued expenses and other liabilities” totaled $31.7 million and $33.1 million , respectively, in the Consolidated Balance Sheets. As of December 31, 2020 , the Company’s operating leases had a weighted average remaining lease term of approximately 32 years and a weighted average discount rate of approximately 4.4% . Lease expense recognized for the years ended December 31, 2020, 2019 and 2018 was immaterial to the Company. Cash paid for amounts included in the measurement of operating lease liabilities during the years ended December 31, 2020 and 2019 was also immaterial. Recently Adopted Accounting Pronouncements In June 2016, the Financial Accounting Standards Board (“FASB”) issued Account Standards Update (“ASU”) No. 2016-13, Measurement of Credit Losses on Financial Instruments

Earnings Per Common Share of MA

Earnings Per Common Share of MAA	12 Months Ended
	Dec. 31, 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 years ended December 31, 2020, 2019 and 2018, 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): Calculation of Earnings per common share - basic 2020 2019 2018 Net income $ 264,015 $ 366,618 $ 231,022 Net income attributable to noncontrolling interests (9,053 ) (12,807 ) (8,123 ) Unvested restricted stock (allocation of earnings) (338 ) (519 ) (291 ) Preferred dividends (3,688 ) (3,688 ) (3,688 ) Net income available for MAA common shareholders, adjusted $ 250,936 $ 349,604 $ 218,920 Weighted average common shares - basic 114,188 113,854 113,638 Earnings per common share - basic $ 2.20 $ 3.07 $ 1.93 Calculation of Earnings per common share - diluted Net income $ 264,015 $ 366,618 $ 231,022 Net income attributable to noncontrolling interests (9,053 ) (1) (12,807 ) (1) (8,123 ) (1) Preferred dividends (3,688 ) (3,688 ) (3,688 ) Net income available for MAA common shareholders, adjusted $ 251,274 $ 350,123 $ 219,211 Weighted average common shares - basic 114,188 113,854 113,638 Effect of dilutive securities 312 259 198 Weighted average common shares - diluted 114,500 114,113 113,836 Earnings per common share - diluted $ 2.19 $ 3.07 $ 1.93 (1)

Earnings Per OP Unit of MAALP

Earnings Per OP Unit of MAALP	12 Months Ended
	Dec. 31, 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 using the two-class method 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 years ended December 31, 2020, 2019 and 2018, 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):

Stock-Based Compensation

Stock-Based Compensation	12 Months Ended
	Dec. 31, 2020
Stock Based Compensation [Abstract]
Stock-Based Compensation	4. Overview MAA accounts for its stock-based employee compensation plans in accordance with accounting standards governing stock-based compensation. These standards require an entity to measure the cost of employee services received in exchange for an award of an equity instrument based on the award’s fair value on the grant date and recognize the cost over the period during which the employee is required to provide service in exchange for the award, which is generally the vesting period. Any liability awards issued are remeasured at each reporting period. MAA’s stock compensation plans consist of a number of incentives provided to attract and retain independent directors, executive officers and key employees. Incentives are currently granted under the Second Amended and Restated 2013 Stock Incentive Plan, or the Stock Plan, which was approved at the 2018 annual meeting of MAA shareholders. The Stock Plan allows for the grant of restricted stock and stock options up to 2,000,000 shares. MAA believes that such awards better align the interests of its employees with those of its shareholders. Compensation expense is generally recognized for service based restricted stock awards using the straight-line method over the vesting period of the shares regardless of cliff or ratable vesting distinctions. Compensation expense for market and performance based restricted stock awards is generally recognized using the accelerated amortization method with each vesting tranche valued as a separate award, with a separate vesting date, consistent with the estimated value of the award at each period end. Additionally, compensation expense is adjusted for actual forfeitures for all awards in the period that the award was forfeited. Compensation expense for stock options is generally recognized on a straight-line basis over the requisite service period. MAA presents stock compensation expense in the Consolidated Statements of Operations in “General and administrative expenses”. Total compensation expense under the Stock Plan was $16.0 million, $14.7 million and $12.9 million for the years ended December 31, 2020, 2019 and 2018, respectively. Of these amounts, total compensation expense capitalized was $1.7 million, $1.0 million and $0.5 million for the years ended December 31, 2020, 2019 and 2018, respectively. As of December 31, 2020, the total unrecognized compensation expense was $14.3 million. This cost is expected to be recognized over the remaining weighted average period of 0.8 years. Total cash paid for the settlement of plan shares totaled $5.7 million, $3.7 million and $2.9 million for the years ended December 31, 2020, 2019 and 2018, respectively. Information concerning grants under the Stock Plan is provided below. Restricted Stock In general, restricted stock is earned based on either a service condition, market condition, performance condition or a combination thereof and generally vests ratably over a period from at grant date up to 5 years. Service based awards are earned when the employee remains employed over the requisite service period and are valued on the grant date based upon the market price of MAA common stock on the date of grant. Market based awards are earned when MAA reaches a specified stock price or specified return on the stock price (price appreciation plus dividends) and are valued on the grant date using a Monte Carlo simulation. Performance based awards are earned when MAA reaches certain operational goals, such as funds available for distribution targets, and are valued based upon the market price of MAA common stock on the date of grant as well as the probability of reaching the stated targets. MAA remeasures the fair value of the performance based awards each balance sheet date with adjustments made on a cumulative basis until the award is settled and the final compensation is known. The weighted average grant date fair value per share of restricted stock awards granted during the years ended December 31, 2020, 2019 and 2018, was $100.53, $72.98 and $71.85, respectively. The following is a summary of the key assumptions used in the valuation calculations for market based awards granted during the years ended December 31, 2020, 2019 and 2018: 2020 2019 2018 Risk free rate 1.603% 2.578% 1.61% - 2.14% Dividend yield 3.070% 4.043% 3.884% Volatility 17.02% 18.95% 15.05% - 17.18% Requisite service period 3 years 3 years 3 years The risk free rate was based on a zero coupon risk-free rate. The dividend yield was based on the closing stock price of MAA stock on the date of grant. Volatility for MAA was obtained by using a blend of both historical and implied volatility calculations. Historical volatility was based on the standard deviation of daily total continuous returns, and implied volatility was based on the trailing month average of daily implied volatilities interpolating between the volatilities implied by stock call option contracts that were closest to the terms shown and closest to the money. The requisite service period is based on the criteria for the separate programs according to the vesting schedule. For the year ended December 31, 2018, the minimum risk free rate was based on a period of 0.25 years, and the maximum risk free rate was based on a period of 3 years. For the year ended December 31, 2018, the minimum volatility was based on a period of A summary of the status of the nonvested restricted shares as of December 31, 2020, and the changes for the year ended December 31, 2020, is presented below: Nonvested Shares Shares Weighted Average Grant-Date Fair Value Nonvested as of January 1, 2020 233,878 $ 96.33 Issued 152,729 88.56 Vested (169,198 ) 81.69 Forfeited (559 ) 106.86 Nonvested as of December 31, 2020 216,850 $ 102.10 The total fair value of shares vested during the years ended December 31, 2020, 2019 and 2018 was $13.9 million, $9.3 million and $7.6 million, respectively. Stock Options Stock options are earned when the employee remains employed over the requisite service period and vest ratably over a period from 0.3 years to 2.3 years. Stock options exercised result in new common shares being issued on the open market by the Company. The fair value of stock option awards is determined using the Monte Carlo valuation model. No stock options were granted or expired during the years ended December 31, 2020, 2019 or 2018. A summary of the status of the outstanding stock options as of December 31, 2020 and the changes for the year ended December 31, 2020 is presented below: Stock Options Options Weighted Average Exercise Price Outstanding as of January 1, 2020 20,763 $ 77.82 Exercised (918 ) 77.77 Outstanding as of December 31, 2020 19,845 $ 77.83 All options outstanding as of December 31, 2020 were exercisable and had an intrinsic value of $1.0 million with a weighted average remaining term of 4.2 years. There were 918 options, 69,852 options and 17,823 options exercised during the years ended December 31, 2020, 2019 and 2018, respectively. Cash received from the exercise of stock options totaled $0.1 million, $2.9 million and $0.9 million for the years ended December 31, 2020, 2019 and 2018, respectively.

Borrowings

Borrowings	12 Months Ended
	Dec. 31, 2020
Notes To Financial Statements [Abstract]
Borrowings	5. Borrowings The following table summarizes the Company’s outstanding debt as of December 31, 2020 and 2019 (dollars in thousands): As of December 31, 2020 Unsecured debt December 31, 2020 December 31, 2019 Weighted Average Effective Rate Weighted Average Contract Maturity Variable rate commercial paper program $ 172,000 $ 70,000 0.3 % 1/7/2021 Fixed rate senior notes 3,922,000 3,472,000 3.6 % 1/27/2027 Term loans fixed with swaps — 300,000 — — Debt issuance costs, discounts, premiums and fair market value adjustments (16,627 ) (13,799 ) Total unsecured debt $ 4,077,373 $ 3,828,201 3.5 % Secured debt Fixed rate property mortgages $ 488,709 $ 629,817 4.6 % 1/12/2042 Debt issuance costs and fair market value adjustments (3,370 ) (3,420 ) Total secured debt $ 485,339 $ 626,397 4.6 % Total outstanding debt $ 4,562,712 $ 4,454,598 3.6 % 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 December 31, 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 December 31, 2020, MAALP had $172.0 million outstanding under the commercial paper program. Unsecured Senior Notes As of 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 Consolidated Balance Sheets as of December 31, 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 December 31, 2020, MAALP had $488.7 million 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. Schedule of Maturities The following table includes scheduled principal repayments of MAALP’s outstanding borrowings as of December 31, 2020, as well as the amortization of the fair market value of debt assumed, debt discounts, premiums and issuance costs (in thousands): Year Maturities Amortization Total 2021 $ 363,578 $ (73 ) $ 363,505 2022 367,000 (856 ) 366,144 2023 362,250 (1,858 ) 360,392 2024 420,000 (2,828 ) 417,172 2025 406,588 (3,570 ) 403,018 Thereafter 2,663,293 (10,812 ) 2,652,481 $ 4,582,709 $ (19,997 ) $ 4,562,712 Guarantees As of December 31, 2020, MAA fully and unconditionally guaranteed $222.0 million of the privately placed unsecured senior notes issued by MAALP.

Financial Instruments and Deriv

Financial Instruments and Derivatives	12 Months Ended
	Dec. 31, 2020
Fair Value Disclosures [Abstract]
Financial Instruments and Derivatives	6. 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 December 31, 2020 and 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), respectively. The carrying values of variable rate debt (excluding the effect of interest rate swap agreements) as of December 31, 2020 and 2019 totaled $172.0 million and $370.0 million, respectively, and had estimated fair values of $172.0 million and $370.0 million (excluding prepayment penalties), 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 at various maturities typically less than 30 days, and management concluded these rates reasonably estimate current market rates. Financial Instruments Measured at Fair Value on a Recurring Basis As of December 31, 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 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” in the accompanying Consolidated Statements of Operations. As a result of adjustments of non-cash income recorded to reflect the change in fair value of the derivative asset during year ended December 31, 2020, the fair value of the embedded derivative asset increased to $39.0 million as of December 31, 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. 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 December 31, 2020, the Company did not have any outstanding interest rate swaps designated as cash flow hedges of interest rate risk. The fair value of interest rate swaps designated as hedging instruments recorded in “Other assets” in the accompanying Consolidated Balance Sheets as of December 31, 2019 was $0.1 million. The interest rate swaps 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 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 December 31, 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 Tabular Disclosure of the Effect of Derivative Instruments on the Statements of Operations The tables below present the effect of the Company’s derivative financial instruments on the Consolidated Statements of Operations for the years ended December 31, 2020, 2019 and 2018, respectively (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) For the Year ended December 31, 2020 2019 2018 OCL into Income 2020 2019 2018 Interest rate contracts $ — $ (11,676 ) $ (751 ) Interest expense $ (1,088 ) $ 1,747 $ 1,938 (1) Derivatives Not Designated as Hedging Instruments Location of Gain (Loss) Recognized in Gain (Loss) Recognized in Earnings on Derivative For the year ended December 31, Income on Derivative 2020 2019 2018 Preferred stock embedded derivative Other non-operating income $ 2,562 $ 17,886 $ (2,576 )

Income Taxes

Income Taxes	12 Months Ended
	Dec. 31, 2020
Income Taxes [Abstract]
Income Taxes	7. Income Taxes Due to the structure of MAA as a REIT and the nature of the operations of its operating properties, no provision for federal income taxes has been made at the MAA level. In addition, as MAALP is structured as a limited partnership, and its partners recognize their proportionate share of income or loss in their tax returns, no provision for federal income taxes has been made at the MAALP level. Historically, the Company has incurred certain state and local income, excise and franchise taxes. Taxable REIT Subsidiaries A TRS is an entity that is subject to federal, state and any applicable local corporate income tax without the benefit of the dividends paid deduction applicable to REITs. The Company’s TRS did not generate any material taxable income or income tax expense for the years ended December 31, 2020, 2019 and 2018. The Company’s TRS generally provide the Company with third party services (property management services to a real estate joint venture and other services) for which the Company reimburses its TRS. In addition, one of the Company’s TRS has investments in two limited partnerships that may generate investment income and losses. All intercompany transactions are eliminated in the accompanying consolidated financial statements. For the years ended December 31, 2020, 2019 and 2018, the reconciliation of income tax attributable to continuing operations for the Company’s TRS computed at the U.S. statutory rate to the income tax provision was as follows (in thousands): 2020 2019 2018 Tax expense at U.S. statutory rates on the Company’s TRS income subject to tax $ 763 $ 1,026 $ 115 Valuation allowance — — 127 TRS income tax provision $ 763 $ 1,026 $ 242 Income tax expense primarily relates to the Texas-based margin tax for all Texas apartment communities in addition to the Company’s TRS income tax provision discussed above. Income tax expense for the Company for the years ended December 31, 2020, 2019 and 2018 was $3.3 million, $3.7 million and $2.6 million, respectively, and is presented in “Income tax expense” in the accompanying Consolidated Statements of Operations. The Company’s TRS deferred tax asset and liability balances as of December 31, 2020 and 2019 were immaterial. The TRS had no reserve for uncertain tax positions for the years ended December 31, 2020 and 2019, and management does not believe there will be any material changes in the TRS unrecognized tax positions over the next 12 months. If necessary, the TRS accrues interest and penalties on unrecognized tax benefits as a component of income tax expense. NOL Carryforwards As of December 31, 2020, the Company held federal NOL carryforwards of $62.0 million for income tax purposes that expire in years 2021 to 2032. Utilization of any NOL carryforwards is subject to an annual limitation due to ownership change limitations provided by Section 382 of the Code and similar state provisions. The annual limitations may result in the expiration of NOL carryforwards before utilization. The Company may use these NOLs to offset all or a portion of the taxable income generated at the REIT level. Tax years 2017 through 2020 are subject to examination by the Internal Revenue Service. No tax examination is currently in process. Taxable Composition of Distributions For income tax purposes, dividends paid to holders of common stock generally consist of ordinary income, return of capital, capital gains, qualified dividends and un-recaptured Section 1250 gains, or a combination thereof. For the years ended December 31, 2020, 2019 and 2018, dividends per share held for the entire year were estimated to be taxable as follows: 2020 2019 2018 Amount Percentage Amount Percentage Amount Percentage Ordinary income $ 4.00 99.98 % $ 3.51 91.39 % $ 3.66 99.26 % Capital gain 0.00 0.02 % 0.21 5.54 % 0.02 0.61 % Un-recaptured Section 1250 gain 0.00 0.00 % 0.12 3.07 % 0.01 0.13 % $ 4.00 100 % $ 3.84 100 % $ 3.69 100 % The Company designated the per share amounts above as capital gain dividends in accordance with the requirements of the Code. The difference between net income available to common shareholders for financial reporting purposes and taxable income before dividend deductions relates primarily to temporary differences such as depreciation and amortization and taxable gains on sold properties.

Shareholders' Equity of MAA

Shareholders' Equity of MAA	12 Months Ended
	Dec. 31, 2020
Shareholders Equity Of M A A [Abstract]
Shareholders' Equity of MAA	8. Shareholders’ Equity of MAA As of December 31, 2020, 114,373,727 shares of common stock of MAA and 4,057,657 OP Units (excluding the OP Units held by MAA) were issued and outstanding, representing a total of 118,431,384 common shares and units. As of December 31, 2019, 114,246,393 Preferred Stock As of December 31, 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 6 for details of the valuation of the derivative asset related to the redemption feature embedded in the MAA Series I preferred stock. Direct Stock Purchase and Distribution Reinvestment Plan MAA has a Dividend and Distribution Reinvestment and Share Purchase Plan, or DRSPP, pursuant to which MAA’s common shareholders have the ability to reinvest all or part of their distributions from MAA into shares of MAA’s common stock and holders of Class A OP Units have the ability to reinvest all or part of their distributions from the Operating Partnership into MAA’s common stock. The DRSPP also provides the opportunity to make optional cash investments in MAA’s common stock of at least $250, but not more than $5,000 in any given month, free of brokerage commissions and charges. MAA, in its absolute discretion, may grant waivers to allow for optional cash payments in excess of $5,000. To fulfill its obligations under the DRSPP, MAA may either issue additional shares of common stock or repurchase common stock in the open market. MAA currently has registered with the SEC the offer and sale of up to 1,940,500 shares of common stock pursuant to the DRSPP. MAA may elect to sell shares under the DRSPP at up to a 5% discount. Shares of MAA’s common stock totaling 8,259 in 2020, 16,219 in 2019, and 9,721 in 2018 were acquired by participants under the DRSPP. MAA did not offer a discount for optional cash purchases in 2020, 2019 or 2018. 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 years ended December 31, 2020 and 2018, MAA did not sell any shares of common stock under its ATM program. During the year ended December 31, 2019, MAA sold 146,301 shares of common stock for net proceeds of $19.6 million through its ATM program. As of December 31, 2020, 3.9 million shares remained issuable under the ATM program .

Partners' Capital of MAALP

Partners' Capital of MAALP	12 Months Ended
	Dec. 31, 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 December 31, 2020, there were 118,431,384 OP Units outstanding, 114,373,727, 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 4,057,657 OP Units were Class A OP Units owned by Class A limited partners. As of December 31, 2019, there were 118,313,567 OP Units outstanding, 114,246,393, or 96.6%, of which were owned by MAA and 4,067,174 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 December 31, 2020, a total of 4,057,657 Class A OP Units were outstanding and redeemable for 4,057,657 shares of MAA common stock, with an approximate value of $514.1 million, based on the closing price of MAA’s common stock on December 31, 2020 of $126.69 per share. As of December 31, 2019, a total of 4,067,174 Class A OP Units were outstanding and redeemable for 4,067,174 shares of MAA common stock, with an approximate value of $536.3 million, based on the closing price of MAA’s common stock on December 31, 2019 of $131.86 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 December 31, 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 December 31, 2020, 867,846 units of the MAALP Series I preferred units were outstanding. See Note 6 for details of the valuation of the derivative asset related to the redemption feature embedded in the MAALP Series I preferred units.

Employee Benefit Plans

Employee Benefit Plans	12 Months Ended
	Dec. 31, 2020
Employee Benefit Plans [Abstract]
EMPLOYEE BENEFIT PLANS	10. Employee Benefit Plans The following provides details of the employee benefit plans not previously discussed in Note 4. 401(k) Savings Plans MAA’s 401(k) Savings Plan, or 401(k) Plan, is a defined contribution plan that satisfies the requirements of Section 401(a) and 401(k) of the Code. MAA’s Board of Directors has the discretion to approve matching contributions to the 401(k) Plan. MAA recognized expense from the 401(k) Plan of $3.9 million, $3.5 million and $3.2 million, for the years ended December 31, 2020, 2019 and 2018, respectively. Non-Qualified Executive Deferred Compensation Retirement Plan MAA has adopted the MAA Non-Qualified Executive Deferred Compensation Retirement Plan Amended and Restated effective January 1, 2016, or the Deferred Compensation Plan, for certain executive employees. Under the terms of the Deferred Compensation Plan, employees may elect to defer a percentage of their compensation and bonus, and MAA may, but is not obligated to, match a portion of the employees’ salary deferral. MAA recognized expense on its match to the Deferred Compensation Plan for the years ended December 31, 2020, 2019 and 2018 of $0.4 million, $0.3 million and $0.3 million, respectively. Non-Qualified Deferred Compensation Plan for Outside Company Directors MAA has adopted the Non-Qualified Deferred Compensation Plan for Outside Company Directors as Amended effective November 30, 2010, or the Directors Deferred Compensation Plan, which allows non-employee directors to defer their director fees by having the fees held by MAA as shares of MAA’s common stock. Directors can also choose to have their annual restricted stock grants issued into the Directors Deferred Compensation Plan. Amounts deferred through the Directors Deferred Compensation Plan are distributed to the directors in two annual installments beginning in the first 90 days of the year following the director’s departure from the board. Participating directors may choose to have the amount issued to them in shares of MAA ’ s common stock or paid to them as cash at the market value of MAA ’ s common stock as of the end of the year the director ceases to serve on the board. For the years ended December 31, 2020, 2019 and 2018, directors deferred 10,593 shares, 10,738 shares and 12,240 shares of common stock, respectively, with weighted-average grant date fair values of $111.19, $117.73 and $92.63, respectively, into the Directors Deferred Compensation Plan. The shares of common stock held in the Directors Deferred Compensation Plan are classified outside of permanent equity in redeemable stock with changes in redemption amount recorded immediately to retained earnings because the directors have redemption rights not solely within the control of MAA. Additionally, any shares that become mandatorily redeemable because a departed director has elected to receive a cash payout are recorded as a liability. MAA did not record a liability related to mandatorily redeemable shares for the years ended December 31, 2020, 2019 and 2018. Employee Stock Ownership Plan MAA’s Employee Stock Ownership Plan, or ESOP, is a non-contributory stock bonus plan that satisfies the requirements of Section 401(a) of the Code. On December 31, 2010, the ESOP was frozen by amendment, whereby effective January 1, 2011, no additional employees became eligible for the plan, no additional contributions were made to the ESOP, and all participants with an account balance under the ESOP became 100% vested. The Company did not contribute to the ESOP during 2020, 2019 or 2018. As of December 31, 2020, there were 130,664 shares outstanding with a fair value of $16.6 million.

Commitments and Contingencies

Commitments and Contingencies	12 Months Ended
	Dec. 31, 2020
Loss Contingency [Abstract]
Commitments and Contingencies	11. 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 Consolidated Balance Sheets as of December 31, 2020 (in thousands): Operating Leases 2021 $ 2,863 2022 2,894 2023 2,885 2024 2,862 2025 2,872 Thereafter 62,913 Total minimum lease payments 77,289 Net present value adjustments (45,549 ) Operating lease obligations $ 31,740 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. 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 December 31, 2020 and 2019, the Company’s accrual for loss contingencies relating to unresolved legal matters was $5.3 million and $8.6 million in the aggregate, respectively. The loss contingencies are presented in “Accrued expenses and other liabilities” in the accompanying Consolidated Balance Sheets.

Related Party Transactions

Related Party Transactions	12 Months Ended
	Dec. 31, 2020
Related Party Transactions [Abstract]
Related Party Transactions	12. Related Party Transactions The Company holds investments in unconsolidated affiliates accounted for under the equity method of accounting. All significant intercompany transactions were eliminated in the accompanying consolidated financial statements. The cash management of the Company is managed by the Operating Partnership. In general, cash receipts are remitted to the Operating Partnership and all cash disbursements are funded by the Operating Partnership. As a result of these transactions, the Operating Partnership had a payable to MAA, its general partner, of $19,000 as of December 31, 2020 and 2019, respectively. The Partnership Agreement does not require the due to/due from balance to be settled in cash until liquidation of the Operating Partnership, and therefore, there is no regular settlement schedule for such amounts.

Segment Information

Segment Information	12 Months Ended
	Dec. 31, 2020
Notes To Financial Statements [Abstract]
Segment Information	13. Segment Information As of December 31, 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 includes 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. Communities previously in development or lease-up are added to the Same Store portfolio on the first day of the calendar year after the 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 years ended December 31, 2020, 2019 and 2018 Revenues 2020 2019 2018 Same Store: Rental revenues $ 1,566,079 $ 1,526,101 $ 1,364,744 Reimbursable property revenues — — 91,020 Other property revenues 11,372 12,174 11,696 Total Same Store revenues 1,577,451 1,538,275 1,467,460 Non-Same Store and Other: Rental revenues 100,134 101,503 99,281 Reimbursable property revenues — — 3,744 Other property revenues 399 1,239 861 Total Non-Same Store and Other revenues 100,533 102,742 103,886 Total rental and other property revenues $ 1,677,984 $ 1,641,017 $ 1,571,346 Net Operating Income Same Store NOI $ 979,330 $ 968,190 $ 921,240 Non-Same Store and Other NOI 58,183 59,982 55,518 Total NOI 1,037,513 1,028,172 976,758 Depreciation and amortization (510,842 ) (496,843 ) (489,759 ) Property management expenses (52,300 ) (55,011 ) (47,633 ) General and administrative expenses (46,858 ) (43,845 ) (38,855 ) Merger and integration expenses — — (9,112 ) Interest expense (167,562 ) (179,847 ) (173,594 ) Gain (loss) on sale of depreciable real estate assets 9 80,988 (39 ) Gain on sale of non-depreciable real estate assets 1,024 12,047 4,532 Other non-operating income 4,857 22,999 9,503 Income tax expense (3,327 ) (3,696 ) (2,611 ) Income from real estate joint venture 1,501 1,654 1,832 Net income attributable to noncontrolling interests (9,053 ) (12,807 ) (8,123 ) Dividends to MAA Series I preferred shareholders (3,688 ) (3,688 ) (3,688 ) Net income available for MAA common shareholders $ 251,274 $ 350,123 $ 219,211 Assets for each reportable segment as of December 31, 2020 and 2019 were as follows (in thousands): Assets December 31, 2020 December 31, 2019 Same Store $ 9,714,024 $ 9,975,880 Non-Same Store and Other 1,299,862 1,049,029 Corporate assets 180,905 205,541 Total assets $ 11,194,791 $ 11,230,450

Real Estate Acquisitions and Di

Real Estate Acquisitions and Dispositions	12 Months Ended
	Dec. 31, 2020
Real Estate [Abstract]
Real Estate Acquisitions and Dispositions	14. Real Estate Acquisitions and Dispositions The following table reflects the Company’s acquisition activity for the year ended December 31, 2020: Land Acquisitions Market Acres Date Acquired MAA Windmill Hill Austin, TX 22 January 2020 MAA Central Park Denver, CO 27 November 2020 Novel Val Vista (1) Phoenix, AZ 13 December 2020 (1) The following table reflects the Company’s disposition activity for the year ended December 31, 2020: Land Disposition Market Units Date Sold Colonial Promenade Huntsville, AL 27 September 2020

Subsequent Events

Subsequent Events	12 Months Ended
	Dec. 31, 2020
Subsequent Events [Abstract]
Subsequent Events	15. Financing On February 10, 2021, MAALP retired a $118.6 million mortgage associated with eight apartment communities prior to its maturity.

Schedule III Real Estate and Ac

Schedule III Real Estate and Accumulated Depreciation	12 Months Ended
	Dec. 31, 2020
Real Estate And Accumulated Depreciation Disclosure [Abstract]
Schedule III Real Estate and Accumulated Depreciation	Initial Cost Costs Capitalized Subsequent to Acquisition Gross Amount carried as of December 31, 2020 Property Location Encumbrances Land Buildings and Fixtures Land Buildings and Fixtures Land Buildings and Fixtures Total (4) Accumulated Depreciation (5) Net Date of Construction Date Acquired Birchall at Ross Bridge Birmingham, AL — $ 2,640 $ 28,842 $ — $ 2,720 $ 2,640 $ 31,562 $ 34,202 $ (10,147 ) $ 24,055 2009 2011 Colonial Grand at Riverchase Trails Birmingham, AL — 3,761 22,079 — 5,591 3,761 27,670 31,431 (9,480 ) 21,951 2010 2013 Colonial Village at Trussville Birmingham, AL — 3,402 31,813 — 3,871 3,402 35,684 39,086 (11,493 ) 27,593 1996/97 2013 Eagle Ridge Birmingham, AL — 851 7,667 — 4,473 851 12,140 12,991 (8,352 ) 4,639 1986 1998 Colonial Grand at Traditions Gulf Shores, AL — 3,211 25,162 — 3,734 3,211 28,896 32,107 (9,766 ) 22,341 2007 2013 Colonial Grand at Edgewater Huntsville, AL — 4,943 38,673 — 7,646 4,943 46,319 51,262 (13,207 ) 38,055 1990 2013 Paddock Club at Providence Huntsville, AL — 909 10,152 830 14,419 1,739 24,571 26,310 (15,550 ) 10,760 1993 1997 Colonial Grand at Madison Madison, AL — 3,601 28,934 — 2,107 3,601 31,041 34,642 (10,251 ) 24,391 2000 2013 Cypress Village Orange Beach, AL — 1,290 12,238 — 2,436 1,290 14,674 15,964 (4,390 ) 11,574 2008 2013 Colonial Grand at Liberty Park Vestavia Hills, AL — 3,922 30,977 — 7,021 3,922 37,998 41,920 (12,569 ) 29,351 2000 2013 Sky View Ranch Gilbert, AZ — 2,668 14,577 — 2,947 2,668 17,524 20,192 (7,180 ) 13,012 2007 2009 Colonial Grand at Inverness Commons Mesa, AZ — 4,219 26,255 — 3,412 4,219 29,667 33,886 (8,961 ) 24,925 2002 2013 Edge at Lyon's Gate Phoenix, AZ — 7,901 27,182 — 3,049 7,901 30,231 38,132 (13,033 ) 25,099 2007 2008 Residences at Fountainhead Phoenix, AZ — (3) 12,212 56,705 — 2,049 12,212 58,754 70,966 (8,281 ) 62,685 2015 2016 Talus Ranch Phoenix, AZ — 12,741 47,701 — 5,123 12,741 52,824 65,565 (24,977 ) 40,588 2005 2006 Colonial Grand at OldTown Scottsdale Scottsdale, AZ — 7,820 51,627 — 5,764 7,820 57,391 65,211 (17,704 ) 47,507 1994/95 2013 Colonial Grand at Scottsdale Scottsdale, AZ — 3,612 20,273 — 2,724 3,612 22,997 26,609 (7,312 ) 19,297 1999 2013 SkySong Scottsdale, AZ — — 55,748 — 2,885 — 58,633 58,633 (8,802 ) 49,831 2014 2015 Post River North Denver, CO — 14,500 28,900 — 40,624 14,500 69,524 84,024 (7,424 ) 76,600 2018 2016 Sync 36 I Denver, CO — 18,887 81,317 134 5,284 19,021 86,601 105,622 (6,805 ) 98,817 2017 2018 Sync 36 II Denver, CO — 5,090 — — 16,828 5,090 16,828 21,918 (1,145 ) 20,773 2019 2018 Tiffany Oaks Altamonte Springs, FL — 1,024 9,219 — 5,444 1,024 14,663 15,687 (10,831 ) 4,856 1985 1996 Colonial Grand at Lakewood Ranch Bradenton, FL — 2,980 40,230 — 5,362 2,980 45,592 48,572 (13,905 ) 34,667 1999 2013 Indigo Point Brandon, FL — 1,167 10,500 — 3,905 1,167 14,405 15,572 (9,584 ) 5,988 1989 2000 Paddock Club Brandon Brandon, FL — 2,896 26,111 — 6,939 2,896 33,050 35,946 (22,893 ) 13,053 1998 1997 The Preserve at Coral Square Coral Springs, FL — 9,600 40,004 — 13,362 9,600 53,366 62,966 (28,019 ) 34,947 1996 2004 Paddock Club Gainesville Gainesville, FL — 1,800 15,879 — 4,906 1,800 20,785 22,585 (11,415 ) 11,170 1999 1998 The Retreat at Magnolia Parke Gainesville, FL — 2,040 16,338 — 1,358 2,040 17,696 19,736 (5,871 ) 13,865 2009 2011 Colonial Grand at Heathrow Heathrow, FL — 4,101 35,684 — 4,475 4,101 40,159 44,260 (12,877 ) 31,383 1997 2013 220 Riverside Jacksonville, FL — 2,381 35,514 — 8,337 2,381 43,851 46,232 (5,915 ) 40,317 2015 2012 Atlantic Crossing Jacksonville, FL — 4,000 19,495 — 2,368 4,000 21,863 25,863 (7,382 ) 18,481 2008 2011 Cooper's Hawk Jacksonville, FL — 854 7,500 — 3,742 854 11,242 12,096 (8,695 ) 3,401 1987 1995 Hunter's Ridge at Deerwood Jacksonville, FL — 1,533 13,835 — 5,249 1,533 19,084 20,617 (13,650 ) 6,967 1987 1997 Lakeside Jacksonville, FL — 1,430 12,883 — 8,284 1,430 21,167 22,597 (15,608 ) 6,989 1985 1996 Lighthouse at Fleming Island Jacksonville, FL — 4,047 35,052 — 5,114 4,047 40,166 44,213 (23,102 ) 21,111 2003 2003 Paddock Club Mandarin Jacksonville, FL — 1,411 14,967 — 3,288 1,411 18,255 19,666 (10,246 ) 9,420 1998 1998 St. Augustine Jacksonville, FL — 2,857 6,475 — 18,575 2,857 25,050 27,907 (12,664 ) 15,243 1987/ 2008 1995 Tattersall at Tapestry Park Jacksonville, FL — 6,417 36,069 — 1,957 6,417 38,026 44,443 (12,286 ) 32,157 2009 2011 Woodhollow Jacksonville, FL — 1,686 15,179 (8 ) 9,218 1,678 24,397 26,075 (18,279 ) 7,796 1986 1997 Colonial Grand at Lake Mary Lake Mary, FL — (1) 6,346 41,539 — 24,883 6,346 66,422 72,768 (16,359 ) 56,409 2012 2013 Colonial Grand at Town Park Lake Mary, FL — 5,742 56,562 — 6,304 5,742 62,866 68,608 (20,707 ) 47,901 2005 2013 Colonial Grand at Town Park Reserve Lake Mary, FL — 3,481 10,311 — 510 3,481 10,821 14,302 (3,642 ) 10,660 2004 2013 Colonial Grand at Heather Glen Orlando, FL — 4,662 56,988 — 7,365 4,662 64,353 69,015 (19,815 ) 49,200 2000 2013 Colonial Grand at Randal Lakes Orlando, FL — 5,659 50,553 — 11,424 5,659 61,977 67,636 (10,951 ) 56,685 2013 2013 Colonial Grand at Randal Lakes II Orlando, FL — 3,200 — — 36,931 3,200 36,931 40,131 (3,784 ) 36,347 2013 2013 Post Lake at Baldwin Park Orlando, FL — 18,101 144,200 — 4,101 18,101 148,301 166,402 (24,572 ) 141,830 2011 2016 Post Lakeside Orlando, FL — 7,046 52,585 — 938 7,046 53,523 60,569 (8,100 ) 52,469 2013 2016 Post Parkside Orlando, FL — 5,669 49,754 — 5,299 5,669 55,053 60,722 (9,093 ) 51,629 1999 2016 Retreat at Lake Nona Orlando, FL — 7,880 41,175 — 6,266 7,880 47,441 55,321 (14,170 ) 41,151 2006 2012 Park Crest at Innisbrook Palm Harbor, FL — 6,900 26,613 — 3,812 6,900 30,425 37,325 (12,866 ) 24,459 2000 2009 The Club at Panama Beach Panama City, FL — 898 14,276 (5 ) 4,626 893 18,902 19,795 (11,057 ) 8,738 2000 1998 Colonial Village at Twin Lakes Sanford, FL — 3,091 47,793 — 3,062 3,091 50,855 53,946 (15,922 ) 38,024 2005 2013 Paddock Club Tallahassee Tallahassee, FL — 530 4,805 950 14,466 1,480 19,271 20,751 (13,992 ) 6,759 1992 1997 Verandas at Southwood Tallahassee, FL — 3,600 25,914 — 1,685 3,600 27,599 31,199 (6,423 ) 24,776 2003 2011 Belmere Tampa, FL — 852 7,667 — 6,809 852 14,476 15,328 (10,529 ) 4,799 1984 1994 Colonial Grand at Hampton Preserve Tampa, FL — 6,233 69,535 — 2,571 6,233 72,106 78,339 (20,819 ) 57,520 2012 2013 Links at Carrollwood Tampa, FL — 817 7,355 110 5,840 927 13,195 14,122 (9,206 ) 4,916 1980 1998 Post Bay at Rocky Point Tampa, FL — 4,541 28,381 — 1,989 4,541 30,370 34,911 (4,993 ) 29,918 1997 2016 Post Harbour Place Tampa, FL — 16,296 116,193 — 11,137 16,296 127,330 143,626 (21,840 ) 121,786 1997 2016 Post Hyde Park Tampa, FL — 16,891 95,259 — 7,030 16,891 102,289 119,180 (17,523 ) 101,657 1994 2016 Post Rocky Point Tampa, FL — 35,260 153,102 — 13,405 35,260 166,507 201,767 (27,806 ) 173,961 1994-1996 2016 Post Soho Square Tampa, FL — (3) 5,190 56,296 — 898 5,190 57,194 62,384 (8,535 ) 53,849 2012 2016 Village Oaks Tampa, FL — 2,738 19,055 153 2,913 2,891 21,968 24,859 (9,218 ) 15,641 2005 2008 Colonial Grand at Seven Oaks Wesley Chapel, FL — 3,051 42,768 — 3,249 3,051 46,017 49,068 (13,919 ) 35,149 2004 2013 Colonial Grand at Windermere Windermere, FL — (3) 2,711 36,710 — 1,770 2,711 38,480 41,191 (11,101 ) 30,090 2009 2013 MAA Briarcliff Atlanta, GA — 24,645 114,921 — 4,766 24,645 119,687 144,332 (19,281 ) 125,051 1996 2016 MAA Brookhaven Atlanta, GA — 29,048 106,463 — 9,330 29,048 115,793 144,841 (20,071 ) 124,770 1989/92 2016 MAA Brookwood Atlanta, GA — (1) 11,168 52,758 — 5,780 11,168 58,538 69,706 (17,638 ) 52,068 2008 2012 Initial Cost Costs Capitalized Subsequent to Acquisition Gross Amount carried as of December 31, 2020 Property Location Encumbrances Land Buildings and Fixtures Land Buildings and Fixtures Land Buildings and Fixtures Total (4) Accumulated Depreciation (5) Net Date of Construction Date Acquired MAA Buckhead Atlanta, GA — 8,633 19,844 — 9,934 8,633 29,778 38,411 (9,589 ) 28,822 2002 2012 MAA Centennial Park Atlanta, GA — 13,650 10,950 — 61,842 13,650 72,792 86,442 (5,984 ) 80,458 2018 2016 MAA Chastain Atlanta, GA — 30,223 82,964 — 3,326 30,223 86,290 116,513 (13,710 ) 102,803 1990 2016 MAA Dunwoody Atlanta, GA — 15,799 48,054 — 3,975 15,799 52,029 67,828 (8,616 ) 59,212 1995 2016 MAA Gardens Atlanta, GA — 17,907 56,093 — 4,467 17,907 60,560 78,467 (10,531 ) 67,936 1996 2016 MAA Glen Atlanta, GA — 13,878 51,079 — 5,291 13,878 56,370 70,248 (9,299 ) 60,949 1996 2016 MAA Lenox Atlanta, GA — 15,440 73,278 — 3,777 15,440 77,055 92,495 (10,120 ) 82,375 2006 2016 MAA Lenox II Atlanta, GA — 8,435 92,294 — 625 8,435 92,919 101,354 (20,112 ) 81,242 2015 2016 MAA Midtown Atlanta, GA — 7,000 44,000 — 41,102 7,000 85,102 92,102 (7,958 ) 84,144 2017 2016 MAA Oglethorpe Atlanta, GA — 6,875 31,441 (19 ) 7,880 6,856 39,321 46,177 (15,280 ) 30,897 1994 2008 MAA Peachtree Hills Atlanta, GA — 11,974 55,264 — 1,258 11,974 56,522 68,496 (8,689 ) 59,807 1992-1994/2009 2016 MAA Piedmont Park Atlanta, GA — 11,025 34,277 — 2,288 11,025 36,565 47,590 (5,599 ) 41,991 1999 2016 MAA Riverside Atlanta, GA — 23,765 89,369 — 8,746 23,765 98,115 121,880 (17,720 ) 104,160 1996 2016 MAA Spring Atlanta, GA — 18,596 57,819 — 5,723 18,596 63,542 82,138 (11,169 ) 70,969 1999 2016 MAA Stratford Atlanta, GA — — 30,051 — 5,222 — 35,273 35,273 (5,938 ) 29,335 1999 2016 MAA Berkeley Lake Duluth, GA — 1,960 15,707 — 2,714 1,960 18,421 20,381 (6,854 ) 13,527 1998 2013 MAA McDaniel Farm Duluth, GA — 3,985 32,206 — 5,215 3,985 37,421 41,406 (13,550 ) 27,856 1997 2013 MAA Pleasant Hill Duluth, GA — 6,753 32,202 — 6,576 6,753 38,778 45,531 (13,125 ) 32,406 1996 2013 MAA Prescott Duluth, GA — (2) 3,840 24,011 — 5,082 3,840 29,093 32,933 (15,852 ) 17,081 2001 2004 MAA River Oaks Duluth, GA — 4,360 13,579 (11 ) 3,249 4,349 16,828 21,177 (7,345 ) 13,832 1992 2013 MAA River Place Duluth, GA — 2,059 19,158 — 3,563 2,059 22,721 24,780 (8,010 ) 16,770 1994 2013 MAA Mount Vernon Dunwoody, GA — 6,861 23,748 — 4,124 6,861 27,872 34,733 (8,736 ) 25,997 1997 2013 MAA Lake Lanier Gainesville, GA — (2) 6,710 40,994 — 9,576 6,710 50,570 57,280 (27,073 ) 30,207 1998/ 2001 2005 MAA Shiloh Kennesaw, GA — 4,864 45,893 — 6,089 4,864 51,982 56,846 (17,065 ) 39,781 2002 2013 MAA Milstead LaGrange, GA — 3,100 29,240 — 2,899 3,100 32,139 35,239 (9,082 ) 26,157 1998 2008 MAA Barrett Creek Marietta, GA — 5,661 26,186 — 3,564 5,661 29,750 35,411 (11,162 ) 24,249 1999 2013 Colonial Grand at Godley Lake Pooler, GA — 1,750 30,893 — 2,021 1,750 32,914 34,664 (10,184 ) 24,480 2008 2013 Colonial Grand at Godley Station Pooler, GA 6,588 1,800 35,454 — 4,172 1,800 39,626 41,426 (12,117 ) 29,309 2001 2013 Avala at Savannah Quarters Savannah, GA — 1,500 24,862 — 2,323 1,500 27,185 28,685 (8,982 ) 19,703 2009 2011 Colonial Grand at Hammocks Savannah, GA — 2,441 36,863 — 5,452 2,441 42,315 44,756 (13,065 ) 31,691 1997 2013 Colonial Village at Greentree Savannah, GA — 1,710 10,494 — 2,363 1,710 12,857 14,567 (4,769 ) 9,798 1984 2013 Colonial Village at Huntington Savannah, GA — 2,521 8,223 — 1,913 2,521 10,136 12,657 (3,378 ) 9,279 1986 2013 Colonial Village at Marsh Cove Savannah, GA — 5,231 8,555 — 2,095 5,231 10,650 15,881 (4,016 ) 11,865 1983 2013 Georgetown Grove Savannah, GA — 1,288 11,579 — 3,597 1,288 15,176 16,464 (10,950 ) 5,514 1997 1998 Oaks at Wilmington Island Savannah, GA — 2,910 25,315 (46 ) 5,272 2,864 30,587 33,451 (14,649 ) 18,802 1999 2006 MAA West Village Smyrna, GA — 14,410 73,733 — 9,330 14,410 83,063 97,473 (18,741 ) 78,732 2006/12 2014 Ranch at Prairie Trace Overland Park, KS — 3,500 40,614 — 2,048 3,500 42,662 46,162 (6,292 ) 39,870 2015 2015 Grand Reserve at Pinnacle Lexington, KY — 2,024 31,525 — 6,720 2,024 38,245 40,269 (20,846 ) 19,423 2000 1998 Lakepointe Lexington, KY — 411 3,699 — 2,732 411 6,431 6,842 (4,903 ) 1,939 1986 1994 The Mansion Lexington, KY — 694 6,242 — 4,033 694 10,275 10,969 (7,831 ) 3,138 1989 1994 The Village Lexington, KY — 900 8,097 — 4,994 900 13,091 13,991 (10,026 ) 3,965 1989 1994 Stonemill Village Louisville, KY — 1,169 10,518 — 9,889 1,169 20,407 21,576 (15,351 ) 6,225 1985 1994 Market Station Kansas City, MO — 5,814 46,241 — 3,496 5,814 49,737 55,551 (14,079 ) 41,472 2010 2012 The Denton Kansas City, MO — 750 8,795 — 969 750 9,764 10,514 (1,331 ) 9,183 2014 2015 The Denton II Kansas City, MO — 770 — — 24,644 770 24,644 25,414 (1,915 ) 23,499 2017 2015 The Denton III Kansas City, MO — 4,000 42,144 — 2,868 4,000 45,012 49,012 (7,062 ) 41,950 2013/14 2015 Crosswinds Jackson, MS — 1,535 13,826 — 6,870 1,535 20,696 22,231 (15,016 ) 7,215 1989 1996 Pear Orchard Jackson, MS — 1,351 12,168 — 7,808 1,351 19,976 21,327 (15,389 ) 5,938 1985 1994 Reflection Pointe Jackson, MS — 710 8,770 138 8,547 848 17,317 18,165 (12,990 ) 5,175 1986 1988 Lakeshore Landing Ridgeland, MS — 676 6,284 — 4,257 676 10,541 11,217 (5,812 ) 5,405 1974 1994 Colonial Village at Beaver Creek Apex, NC — 7,491 34,863 — 2,929 7,491 37,792 45,283 (11,386 ) 33,897 2007 2013 Hermitage at Beechtree Cary, NC — 900 8,099 — 5,442 900 13,541 14,441 (9,487 ) 4,954 1988 1997 Waterford Forest Cary, NC — (2) 4,000 20,250 — 4,893 4,000 25,143 29,143 (12,793 ) 16,350 1996 2005 MAA 1225 Charlotte, NC — 9,612 22,342 — 29,659 9,612 52,001 61,613 (12,555 ) 49,058 2010 2010 MAA Ayrsley Charlotte, NC — 2,481 52,119 — 15,776 2,481 67,895 70,376 (18,765 ) 51,611 2008 2013 MAA Ballantyne Charlotte, NC — 16,216 44,817 — 3,373 16,216 48,190 64,406 (7,866 ) 56,540 2004 2016 MAA Beverly Crest Charlotte, NC — 3,161 24,004 — 3,991 3,161 27,995 31,156 (8,526 ) 22,630 1996 2013 MAA Chancellor Park Charlotte, NC — 5,311 28,016 — 5,195 5,311 33,211 38,522 (10,515 ) 28,007 1999 2013 MAA City Grand Charlotte, NC — 1,620 17,499 — 1,233 1,620 18,732 20,352 (5,494 ) 14,858 2005 2013 MAA Enclave Charlotte, NC — 1,461 18,984 — 1,881 1,461 20,865 22,326 (5,651 ) 16,675 2008 2013 MAA Gateway Charlotte, NC — 17,528 57,444 — 6,189 17,528 63,633 81,161 (11,000 ) 70,161 2000 2016 MAA Legacy Park Charlotte, NC — 2,891 28,272 — 3,600 2,891 31,872 34,763 (9,899 ) 24,864 2001 2013 MAA Prosperity Creek Charlotte, NC — 4,591 27,713 — 2,616 4,591 30,329 34,920 (9,662 ) 25,258 2005 2013 MAA Reserve Charlotte, NC — 4,628 44,282 — 13,450 4,628 57,732 62,360 (9,812 ) 52,548 2013 2013 MAA South Line Charlotte, NC — 18,835 58,795 — 3,374 18,835 62,169 81,004 (9,182 ) 71,822 2009 2016 MAA South Park Charlotte, NC — 20,869 65,517 — 6,145 20,869 71,662 92,531 (11,933 ) 80,598 1996 2016 MAA South Tryon Charlotte, NC — 2,260 19,489 — 2,780 2,260 22,269 24,529 (6,982 ) 17,547 2002 2013 MAA Timbercrest Charlotte, NC — 2,901 17,192 — 3,396 2,901 20,588 23,489 (6,183 ) 17,306 2000 2013 MAA University Lake Charlotte, NC — 3,250 31,389 — 5,150 3,250 36,539 39,789 (11,864 ) 27,925 1998 2013 MAA Uptown Charlotte, NC — 10,888 30,078 — 2,798 10,888 32,876 43,764 (5,527 ) 38,237 2000 2016 MAA Cornelius Cornelius, NC — 4,571 29,151 — 2,124 4,571 31,275 35,846 (10,161 ) 25,685 2009 2013 Colonial Grand at Patterson Place Durham, NC — 2,590 27,126 — 3,819 2,590 30,945 33,535 (9,593 ) 23,942 1997 2013 Colonial Grand at Research Park Durham, NC — 4,201 37,682 — 4,008 4,201 41,690 45,891 (13,146 ) 32,745 2002 2013 Initial Cost Costs Capitalized Subsequent to Acquisition Gross Amount carried as of December 31, 2020 Property Location Encumbrances Land Buildings and Fixtures Land Buildings and Fixtures Land Buildings and Fixtures Total (4) Accumulated Depreciation (5) Net Date of Construction Date Acquired Colonial Village at Deerfield Durham, NC — 3,271 15,609 — 2,004 3,271 17,613 20,884 (6,425 ) 14,459 1985 2013 MAA Huntersville Huntersville, NC — 4,251 31,948 — 3,712 4,251 35,660 39,911 (11,287 ) 28,624 2008 2013 MAA Fifty-One Matthews, NC — 3,071 21,830 — 6,066 3,071 27,896 30,967 (9,892 ) 21,075 2008 2013 MAA Matthews Commons Matthews, NC — 3,690 28,536 — 2,672 3,690 31,208 34,898 (9,824 ) 25,074 2008 2013 Reserve at Arringdon Morrisville, NC — 6,401 31,134 — 4,204 6,401 35,338 41,739 (11,039 ) 30,700 2003 2013 Colonial Grand at Brier Creek Raleigh, NC — 7,372 50,202 — 2,977 7,372 53,179 60,551 (15,996 ) 44,555 2010 2013 Colonial Grand at Brier Falls Raleigh, NC — 6,572 48,910 — 2,760 6,572 51,670 58,242 (15,174 ) 43,068 2008 2013 Colonial Grand at Crabtree Valley Raleigh, NC — 2,241 18,434 — 2,511 2,241 20,945 23,186 (6,105 ) 17,081 1997 2013 Colonial Grand at Trinity Commons Raleigh, NC — 5,232 45,138 — 5,068 5,232 50,206 55,438 (16,100 ) 39,338 2000/02 2013 Hue Raleigh, NC — 3,690 29,910 — 2,579 3,690 32,489 36,179 (8,967 ) 27,212 2009 2010 Post Parkside at Wade Raleigh, NC — 7,196 51,972 — 2,687 7,196 54,659 61,855 (8,476 ) 53,379 2011 2016 Post Parkside at Wade II Raleigh, NC — 9,450 46,316 587 2,209 10,037 48,525 58,562 (11,932 ) 46,630 2017 2016 Post Parkside at Wade III Raleigh, NC — 2,200 — — 22,407 2,200 22,407 24,607 (1,142 ) 23,465 2019 2016 Preserve at Brier Creek Raleigh, NC — 5,850 21,980 (19 ) 26,755 5,831 48,735 54,566 (21,121 ) 33,445 2004 2006 Providence at Brier Creek Raleigh, NC — 4,695 29,007 — 2,437 4,695 31,444 36,139 (13,463 ) 22,676 2007 2008 Colonial Grand at Desert Vista North Las Vegas, NV — 4,091 29,826 — 2,303 4,091 32,129 36,220 (10,207 ) 26,013 2009 2013 Colonial Grand at Palm Vista North Las Vegas, NV — 4,909 25,643 — 4,318 4,909 29,961 34,870 (9,973 ) 24,897 2007 2013 Tanglewood Anderson, SC — 427 3,853 — 2,741 427 6,594 7,021 (5,376 ) 1,645 1980 1994 1201 Midtown Charleston, SC — 11,929 57,885 — 954 11,929 58,839 70,768 (7,130 ) 63,638 2015 2016 1201 Midtown II Charleston, SC — 6,750 5,874 — 16,451 6,750 22,325 29,075 (1,600 ) 27,475 2018 2016 Colonial Grand at Cypress Cove Charleston, SC — 3,610 28,645 — 2,717 3,610 31,362 34,972 (10,031 ) 24,941 2001 2013 Colonial Village at Hampton Pointe Charleston, SC — 3,971 22,790 — 6,965 3,971 29,755 33,726 (9,304 ) 24,422 1986 2013 Colonial Village at Westchase Charleston, SC — 4,571 20,091 — 4,839 4,571 24,930 29,501 (8,766 ) 20,735 1985 2013 Quarterdeck at James Island Charleston, SC — 920 24,097 — 6,473 920 30,570 31,490 (9,639 ) 21,851 1987 2013 River's Walk Charleston, SC — 8,831 39,430 — 2,523 8,831 41,953 50,784 (6,852 ) 43,932 2013/16 2013 Paddock Club Columbia Columbia, SC — 1,840 16,560 — 5,170 1,840 21,730 23,570 (15,547 ) 8,023 1991 1997 The Fairways Columbia, SC — 910 8,207 — 3,428 910 11,635 12,545 (9,073 ) 3,472 1992 1994 Colonial Village at Windsor Place Goose Creek, SC — 1,321 14,163 — 3,765 1,321 17,928 19,249 (6,376 ) 12,873 1985 2013 Highland Ridge Greenville, SC — 482 4,337 — 2,998 482 7,335 7,817 (5,123 ) 2,694 1984 1995 Howell Commons Greenville, SC — 1,304 11,740 — 4,415 1,304 16,155 17,459 (11,843 ) 5,616 1987 1997 Innovation Apartment Homes Greenville, SC — 4,437 52,026 — 2,223 4,437 54,249 58,686 (8,075 ) 50,611 2015 2016 Paddock Club Greenville Greenville, SC — 1,200 10,800 — 3,149 1,200 13,949 15,149 (9,730 ) 5,419 1996 1997 Park Haywood Greenville, SC — 325 2,925 35 4,767 360 7,692 8,052 (5,857 ) 2,195 1983 1993 Spring Creek Greenville, SC — 597 5,374 (14 ) 2,973 583 8,347 8,930 (6,216 ) 2,714 1985 1995 The Greene Greenville, SC — 5,420 66,546 7 600 5,427 67,146 72,573 (2,072 ) 70,501 2019 2019 Runaway Bay Mt. Pleasant, SC — 1,085 7,269 12 6,622 1,097 13,891 14,988 (10,344 ) 4,644 1988 1995 Colonial Grand at Commerce Park North Charleston, SC — 2,780 33,966 — 3,514 2,780 37,480 40,260 (11,287 ) 28,973 2008 2013 535 Brookwood Simpsonville, SC — 1,216 18,666 — 2,222 1,216 20,888 22,104 (7,605 ) 14,499 2008 2010 Park Place Spartanburg, SC — 723 6,504 — 2,811 723 9,315 10,038 (6,870 ) 3,168 1987 1997 Colonial Village at Waters Edge Summerville, SC — 2,103 9,187 — 4,537 2,103 13,724 15,827 (5,627 ) 10,200 1985 2013 Farmington Village Summerville, SC — 2,800 26,295 — 2,963 2,800 29,258 32,058 (13,242 ) 18,816 2007 2007 Hamilton Pointe Chattanooga, TN — 1,131 10,632 — 6,688 1,131 17,320 18,451 (8,622 ) 9,829 1989 1992 Hidden Creek Chattanooga, TN — 972 8,954 — 6,875 972 15,829 16,801 (7,757 ) 9,044 1987 1988 Steeplechase Chattanooga, TN — 217 1,957 — 4,220 217 6,177 6,394 (3,835 ) 2,559 1986 1991 Windridge Chattanooga, TN — 817 7,416 — 4,398 817 11,814 12,631 (8,498 ) 4,133 1984 1997 Kirby Station Memphis, TN — 1,148 10,337 — 10,378 1,148 20,715 21,863 (15,153 ) 6,710 1978 1994 Lincoln on the Green Memphis, TN — 1,498 20,483 — 16,721 1,498 37,204 38,702 (27,617 ) 11,085 1992 1994 Park Estate Memphis, TN — 178 1,141 — 3,587 178 4,728 4,906 (3,482 ) 1,424 1974 1977 Reserve at Dexter Lake Memphis, TN — 1,260 16,043 2,147 43,880 3,407 59,923 63,330 (30,350 ) 32,980 2000 1998 Paddock Club Murfreesboro Murfreesboro, TN — 915 14,774 — 4,044 915 18,818 19,733 (10,577 ) 9,156 1999 1998 Acklen West End Nashville, TN — 12,761 58,906 — 1,714 12,761 60,620 73,381 (6,643 ) 66,738 2015 2017 Aventura at Indian Lake Village Nashville, TN — 4,950 28,053 — 2,747 4,950 30,800 35,750 (9,845 ) 25,905 2010 2011 Avondale at Kennesaw Nashville, TN — 3,456 22,443 — 4,011 3,456 26,454 29,910 (9,468 ) 20,442 2008 2010 Brentwood Downs Nashville, TN — 1,193 10,739 (2 ) 8,946 1,191 19,685 20,876 (13,542 ) 7,334 1986 1994 Charlotte at Midtown Nashville, TN — 7,898 54,480 — 1,692 7,898 56,172 64,070 (6,139 ) 57,931 2016 2017 Colonial Grand at Bellevue Nashville, TN — 17,278 64,196 (2 ) 5,577 17,276 69,773 87,049 (17,249 ) 69,800 1996/ 2015 2013 Grande View Nashville Nashville, TN — 2,963 33,673 — 8,777 2,963 42,450 45,413 (22,334 ) 23,079 2001 1998 Monthaven Park Nashville, TN — 2,736 28,902 — 6,246 2,736 35,148 37,884 (19,946 ) 17,938 2000 2004 Park at Hermitage Nashville, TN — 1,524 14,800 — 8,839 1,524 23,639 25,163 (18,064 ) 7,099 1987 1995 Venue at Cool Springs Nashville, TN — 6,670 — — 52,837 6,670 52,837 59,507 (11,775 ) 47,732 2012 2010 Verandas at Sam Ridley Nashville, TN — 3,350 28,308 — 3,892 3,350 32,200 35,550 (11,401 ) 24,149 2009 2010 Balcones Woods Austin, TX — 1,598 14,398 — 9,785 1,598 24,183 25,781 (17,292 ) 8,489 1983 1997 Colonial Grand at Canyon Creek Austin, TX — 3,621 32,137 — 2,212 3,621 34,349 37,970 (10,837 ) 27,133 2008 2013 Colonial Grand at Canyon Pointe Austin, TX — 3,778 20,201 — 2,780 3,778 22,981 26,759 (7,995 ) 18,764 2003 2013 Colonial Grand at Double Creek Austin, TX — 3,131 29,375 — 1,284 3,131 30,659 33,790 (9,669 ) 24,121 2013 2013 Colonial Grand at Onion Creek Austin, TX — 4,902 33,010 — 2,682 4,902 35,692 40,594 (11,464 ) 29,130 2009 2013 Colonial Grand at Wells Branch Austin, TX — (3) 3,094 32,283 294 2,287 3,388 34,570 37,958 (10,328 ) 27,630 2008 2013 Colonial Village at Quarry Oaks Austin, TX — 4,621 34,461 — 7,297 4,621 41,758 46,379 (14,463 ) 31,916 1996 2013 Grand Reserve at Sunset Valley Austin, TX — 3,150 11,393 — 4,064 3,150 15,457 18,607 (8,415 ) 10,192 1996 2004 Legacy at Western Oaks Austin, TX — (1) 9,100 49,339 — 1,619 9,100 50,958 60,058 (15,957 ) 44,101 2001 2009 Post Barton Creek Austin, TX — 8,683 21,497 — 1,779 8,683 23,276 31,959 (4,315 ) 27,644 1998 2016 Post Park Mesa Austin, TX — 4,653 19,828 — 1,326 4,653 21,154 25,807 (3,423 ) 22,384 1992 2016 Post South Lamar Austin, TX — 11,542 41,293 — 3,704 11,542 44,997 56,539 (8,822 ) 47,717 2011 2016 Post South Lamar II Austin, TX — 9,000 32,800 — 20,134 9,000 52,934 61,934 (5,292 ) 56,642 2017 2016 Post West Austin Austin, TX — (3) 7,805 48,843 — 2,203 7,805 51,046 58,851 (9,935 ) 48,916 2009 2016 Silverado at Brushy Creek Austin, TX — 2,900 24,009 — 4,788 2,900 28,797 31,697 (14,486 ) 17,211 2003 2006 Initial Cost Costs Capitalized Subsequent to Acquisition Gross Amount carried as of December 31, 2020 Property Location Encumbrances Land Buildings and Fixtures Land Buildings and Fixtures Land Buildings and Fixtures Total (4) Accumulated Depreciation (5) Net Date of Construction Date Acquired Sixty 600 Austin, TX — 2,281 6,169 — 7,794 2,281 13,963 16,244 (9,297 ) 6,947 1987 1995 Stassney Woods Austin, TX — 1,621 7,501 — 8,403 1,621 15,904 17,525 (10,580 ) 6,945 1985 1995 The Woods on Barton Skyway Austin, TX — 1,405 12,769 — 12,043 1,405 24,812 26,217 (12,214 ) 14,003 1977 1997 Colonial Village at Shoal Creek Bedford, TX — 4,982 27,377 — 4,463 4,982 31,840 36,822 (10,699 ) 26,123 1996 2013 Colonial Village at Willow Creek Bedford, TX — 3,109 33,488 — 8,965 3,109 42,453 45,562 (14,258 ) 31,304 1996 2013 Colonial Grand at Hebron Carrollton, TX — 4,231 42,237 — 2,316 4,231 44,553 48,784 (12,640 ) 36,144 2011 2013 Colonial Grand at Silverado Cedar Park, TX — 3,282 24,935 — 1,846 3,282 26,781 30,063 (8,371 ) 21,692 2005 2013 Colonial Grand at Silverado Reserve Cedar Park, TX — 3,951 31,705 — 2,588 3,951 34,293 38,244 (10,495 ) 27,749 2005 2013 Grand Cypress Cypress, TX — 3,881 24,267 — 1,814 3,881 26,081 29,962 (6,036 ) 23,926 2008 2013 Colonial Reserve at Medical District Dallas, TX — 4,050 33,779 — 2,815 4,050 36,594 40,644 (10,055 ) 30,589 2007 2013 Courtyards at Campbell Dallas, TX — 988 8,893 — 4,327 988 13,220 14,208 (9,130 ) 5,078 1986 1998 Deer Run Dallas, TX — 1,252 11,271 — 5,034 1,252 16,305 17,557 (11,804 ) 5,753 1985 1998 Grand Courtyards Dallas, TX — 2,730 22,240 — 4,848 2,730 27,088 29,818 (13,175 ) 16,643 2000 2006 Legends at Lowe's Farm Dallas, TX — 5,016 41,091 — 2,916 5,016 44,007 49,023 (14,543 ) 34,480 2008 2011 MAA Frisco Bridges I/III Dallas, TX — 8,745 66,571 — 3,896 8,745 70,467 79,212 (16,574 ) 62,638 2009/13 2013 MAA McKinney Avenue Dallas, TX — 13,178 24,048 — 4,248 13,178 28,296 41,474 (4,339 ) 37,135 1996 2016 MAA McKinney Avenue II Dallas, TX — 13,621 8,608 — 2,726 13,621 11,334 24,955 (1,984 ) 22,971 1993 2016 MAA McKinney Avenue III Dallas, TX — 7,966 7,471 — 1,936 7,966 9,407 17,373 (1,565 ) 15,808 1996 2016 MAA Worthington Dallas, TX — 13,713 43,268 — 6,056 13,713 49,324 63,037 (7,368 ) 55,669 1993/ 2008 2016 Post Abbey Dallas, TX — 2,711 4,369 — 403 2,711 4,772 7,483 (813 ) 6,670 1996 2016 Post Addison Circle Dallas, TX — 12,308 189,419 — 15,002 12,308 204,421 216,729 (33,343 ) 183,386 1998-2000 2016 Post Cole's Corner Dallas, TX — 13,030 14,383 — 2,975 13,030 17,358 30,388 (3,309 ) 27,079 1998 2016 Post Eastside Dallas, TX — 7,134 58,095 — 2,393 7,134 60,488 67,622 (10,636 ) 56,986 2008 2016 Post Gallery Dallas, TX — 4,391 7,910 — 1,079 4,391 8,989 13,380 (1,852 ) 11,528 1999 2016 Post Heights Dallas, TX — 26,245 37,922 — 2,420 26,245 40,342 66,587 (7,074 ) 59,513 1998-1999/2009 2016 Post Katy Trail Dallas, TX — 10,333 32,456 — 1,374 10,333 33,830 44,163 (5,130 ) 39,033 2010 2016 Post Legacy Dallas, TX — (3) 6,575 55,277 — 4,781 6,575 60,058 66,633 (9,694 ) 56,939 2000 2016 Post Meridian Dallas, TX — 8,780 13,654 — 839 8,780 14,493 23,273 (2,611 ) 20,662 1991 2016 Post Uptown Village Dallas, TX — 34,974 33,213 — 5,969 34,974 39,182 74,156 (7,154 ) 67,002 1995-2000 2016 Watermark Dallas, TX — (2) 960 14,438 — 3,080 960 17,518 18,478 (9,748 ) 8,730 2002 2004 Colonial Grand at Bear Creek Euless, TX — 6,453 30,048 — 3,637 6,453 33,685 40,138 (11,649 ) 28,489 1998 2013 Colonial Grand at Fairview Fairview, TX — 2,171 35,077 — 1,391 2,171 36,468 38,639 (10,300 ) 28,339 2012 2013 La Valencia at Starwood Frisco, TX — 3,240 26,069 — 2,041 3,240 28,110 31,350 (10,144 ) 21,206 2009 2010 Colonial Village at Grapevine Grapevine, TX — 2,351 29,757 — 6,985 2,351 36,742 39,093 (11,674 ) 27,419 1985/86 2013 Greenwood Forest Houston, TX — 3,465 23,482 — 1,685 3,465 25,167 28,632 (6,907 ) 21,725 1994 2013 Legacy Pines Houston, TX — (2) 2,157 19,066 (15 ) 4,172 2,142 23,238 25,380 (13,617 ) 11,763 1999 2003 Park Place Houston Houston, TX — 2,061 15,830 — 3,221 2,061 19,051 21,112 (9,071 ) 12,041 1996 2007 Post 510 Houston, TX — 7,227 33,366 — 931 7,227 34,297 41,524 (6,287 ) 35,237 2014 2016 Post at Afton Oaks Houston, TX — 11,503 65,469 — 4,129 11,503 69,598 81,101 (14,474 ) 66,627 2017 2016 Post Midtown Square Houston, TX — 19,038 89,570 — 4,708 19,038 94,278 113,316 (16,178 ) 97,138 1999/ 2013 2016 Ranchstone Houston, TX — 1,480 14,807 — 3,343 1,480 18,150 19,630 (8,367 ) 11,263 1996 2007 Reserve at Woodwind Lakes Houston, TX — 1,968 19,928 — 4,551 1,968 24,479 26,447 (11,956 ) 14,491 1999 2006 Retreat at Vintage Park Houston, TX — (3) 8,211 40,352 — 1,704 8,211 42,056 50,267 (6,774 ) 43,493 2014 2014 Yale at 6th Houston, TX — (1) 13,107 62,764 — 2,109 13,107 64,873 77,980 (8,309 ) 69,671 2015 2016 Cascade at Fall Creek Humble, TX — 5,985 40,011 — 3,599 5,985 43,610 49,595 (19,437 ) 30,158 2007 2007 Bella Casita Irving, TX — (2) 2,521 26,432 — 3,894 2,521 30,326 32,847 (10,396 ) 22,451 2007 2010 Colonial Grand at Valley Ranch Irving, TX — 5,072 37,397 — 13,787 5,072 51,184 56,256 (17,704 ) 38,552 1997 2013 Colonial Reserve at Las Colinas Irving, TX — (1) 3,902 40,691 — 2,411 3,902 43,102 47,004 (11,879 ) 35,125 2006 2013 Remington Hills Irving, TX — 4,390 21,822 — 12,573 4,390 34,395 38,785 (10,890 ) 27,895 1984 2013 Colonial Village at Oakbend Lewisville, TX — 5,598 28,616 — 5,700 5,598 34,316 39,914 (11,122 ) 28,792 1997 2013 Times Square at Craig Ranch McKinney, TX — 1,130 28,058 — 5,658 1,130 33,716 34,846 (12,315 ) 22,531 2009 2010 Venue at Stonebridge Ranch McKinney, TX — 4,034 19,528 — 2,444 4,034 21,972 26,006 (5,556 ) 20,450 2000 2013 Cityscape at Market Center Plano, TX — 16,894 110,705 — 4,076 16,894 114,781 131,675 (17,834 ) 113,841 2013/15 2014 Highwood Plano, TX — 864 7,783 — 3,395 864 11,178 12,042 (7,906 ) 4,136 1983 1998 Los Rios Park Plano, TX — 3,273 28,823 — 7,115 3,273 35,938 39,211 (20,443 ) 18,768 2000 2003 Boulder Ridge Roanoke, TX — 3,382 26,930 — 7,050 3,382 33,980 37,362 (17,563 ) 19,799 1999 2005 Copper Ridge Roanoke, TX — 3,336 — — 22,762 3,336 22,762 26,098 (7,161 ) 18,937 2009 2008 Copper Ridge II Roanoke, TX — 830 — — 25,427 830 25,427 26,257 (1,012 ) 25,245 2020 2008 Colonial Grand at Ashton Oaks Round Rock, TX — 5,511 36,241 — 2,661 5,511 38,902 44,413 (12,248 ) 32,165 2009 2013 Colonial Grand at Round Rock Round Rock, TX — 4,691 45,379 — 3,064 4,691 48,443 53,134 (14,797 ) 38,337 1997 2013 Colonial Village at Sierra Vista Round Rock, TX — 2,561 16,488 — 4,290 2,561 20,778 23,339 (7,251 ) 16,088 1999 2013 Alamo Ranch San Antonio, TX — 2,380 26,982 — 3,158 2,380 30,140 32,520 (10,753 ) 21,767 2009 2011 Bulverde Oaks San Antonio, TX — 4,257 36,759 — 1,796 4,257 38,555 42,812 (6,544 ) 36,268 2014 2014 Haven at Blanco San Antonio, TX — 5,450 45,958 (39 ) 3,940 5,411 49,898 55,309 (14,877 ) 40,432 2010 2012 Stone Ranch at Westover Hills San Antonio, TX — 4,000 24,992 — 3,444 4,000 28,436 32,436 (10,973 ) 21,463 2009 2009 Cypresswood Court Spring, TX — (2) 576 5,190 — 4,876 576 10,066 10,642 (6,274 ) 4,368 1984 1994 Villages at Kirkwood Stafford, TX — 1,918 15,846 — 3,260 1,918 19,106 21,024 (10,306 ) 10,718 1996 2004 Green Tree Place Woodlands, TX — (2) 539 4,850 — 3,797 539 8,647 9,186 (6,452 ) 2,734 1984 1994 Stonefield Commons Charlottesville, VA — 11,044 36,689 — 1,739 11,044 38,428 49,472 (6,655 ) 42,817 2013 2014 Adalay Bay Chesapeake, VA — 5,280 31,341 — 3,864 5,280 35,205 40,485 (11,284 ) 29,201 2002 2012 Apartments at Cobblestone Square Fredericksburg, VA — 10,990 48,696 — 3,035 10,990 51,731 62,721 (9,495 ) 53,226 2012 2016 Colonial Village at Greenbrier Fredericksburg, VA — 4,842 21,677 — 2,926 4,842 24,603 29,445 (6,988 ) 22,457 1980 2013 Seasons at Celebrate Virginia Fredericksburg, VA — 14,490 32,083 — 40,576 14,490 72,659 87,149 (17,743 ) 69,406 2011 2011 Station Square at Cosner's Corner Fredericksburg, VA — 12,825 51,078 — 1,895 12,825 52,973 65,798 (9,454 ) 56,344 2013/16 2013 Colonial Village at Hampton Glen Glen Allen, VA — 4,851 21,678 — 3,890 4,851 25,568 30,419 (7,916 ) 22,503 1986 2013 Initial Cost Costs Capitalized Subsequent to Acquisition Gross Amount carried as of December 31, 2020 Property Location Encumbrances Land Buildings and Fixtures Land Buildings and Fixtures Land Buildings and Fixtures Total (4) Accumulated Depreciation (5) Net Date of Construction Date Acquired Colonial Village at West End Glen Allen, VA — 4,661 18,908 — 3,203 4,661 22,111 26,772 (6,900 ) 19,872 1987 2013 Township Hampton, VA — 1,509 8,189 — 8,610 1,509 16,799 18,308 (11,803 ) 6,505 1987 1995 Colonial Village at Waterford Midlothian, VA — 6,733 29,221 — 5,267 6,733 34,488 41,221 (11,295 ) 29,926 1989 2013 Radius Newport News, VA — 5,040 36,481 — 3,515 5,040 39,996 45,036 (6,344 ) 38,692 2012 2015 Ashley Park Richmond, VA — 4,761 13,365 — 2,960 4,761 16,325 21,086 (5,791 ) 15,295 1988 2013 Colonial Village at Chase Gayton Richmond, VA — 6,021 29,004 — 4,209 6,021 33,213 39,234 (10,660 ) 28,574 1984 2013 Hamptons at Hunton Park Richmond, VA — 4,930 35,598 — 6,270 4,930 41,868 46,798 (13,740 ) 33,058 2003 2011 Retreat at West Creek Richmond, VA — 7,112 36,136 — 2,811 7,112 38,947 46,059 (5,868 ) 40,191 2015 2015 Retreat at West Creek II Richmond, VA — 3,000 — — 12,242 3,000 12,242 15,242 (1,165 ) 14,077 2017 2015 Post Carlyle Square Washington D.C. — 29,7

Organization and Summary of S_2

Organization and Summary of Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2020
Accounting Policies [Abstract]
Basis of Presentation And Principles Of Consolidation	Basis of Presentation and Principles of Consolidation The accompanying 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 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 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 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
Noncontrolling Interests	Noncontrolling Interests As of December 31, 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.
Use of Estimates	Use of Estimates Management has made a number of estimates and assumptions relating to the reporting of assets and liabilities, the disclosure of contingent assets and liabilities, and the reported amounts of revenues and expenses to prepare these financial statements and notes in conformity with GAAP. Actual results could differ from those estimates.
Rental Costs	Rental Costs Costs associated with rental activities are expensed as incurred and include advertising expenses, which were $23.9 million, $20.8 million and $20.2 million for the years ended December 31, 2020, 2019 and 2018, respectively.
Real Estate Assets and Depreciation and Amortization	Real Estate Assets and Depreciation and Amortization Real estate assets are carried at depreciated cost and consist of land, buildings and improvements and other and development and capital improvements in progress (see “Development Costs” below). Repairs and maintenance costs are expensed as incurred, while significant improvements, renovations and recurring capital replacements are capitalized and depreciated over their estimated useful lives. Recurring capital replacements typically include scheduled carpet replacement, new roofs, HVAC units, plumbing, concrete, masonry and other paving, pools and various exterior building improvements. In addition to these costs, the Company also capitalizes salary costs directly identifiable with renovation work. These expenditures extend the useful life of the property and increase the property’s fair market value. The cost of interior painting and blinds are typically expensed as incurred. Depreciation is computed on a straight-line basis over the estimated useful lives of the related assets, which range from three to 40 years. The line item “Buildings and improvements and other” in the Consolidated Balance Sheets includes land improvements and buildings, which have a useful life ranging from five to 40 years, as well as furniture, fixtures and equipment, which have a useful life of three to five years.
Development Costs	Development Costs Development projects and the related carrying costs, including interest, property taxes, insurance and allocated direct development salary costs during the construction period, are capitalized and reported in the accompanying Consolidated Balance Sheets as “Development and capital improvements in progress” during the construction period. Interest is capitalized in accordance with accounting standards governing the capitalization of interest. Upon completion and certification for occupancy of individual buildings or floors within a development, amounts representing the completed portion of total estimated development costs for the project are transferred to “Buildings and improvements and other” as real estate held for investment. Capitalization of interest, property taxes, insurance and allocated direct development salary costs cease upon the transfer. The assets are depreciated over their estimated useful lives. Total capitalized costs (including capitalized interest, salaries and real estate taxes) during the years ended December 31, 2020, 2019 and 2018 were $12.7 million, $6.5 million and $4.2 million, respectively. Certain costs associated with the lease-up of development projects, including cost of model units, furnishings and signs, are capitalized and amortized over their respective estimated useful lives. All other costs relating to renting development projects are expensed as incurred.
Acquisition of Real Estate Assets	Acquisition of Real Estate Assets In accordance with Accounting Standards Codification (“ASC”) Topic 805, Business Combinations The purchase price of an acquired property is allocated based on the relative fair value of the individual components as a proportion of the total assets acquired. The Company allocates the cost of the tangible assets of an acquired property by valuing the building as if it were vacant, based on management’s determination of the relative fair values of these assets. Management determines the as-if-vacant fair value of a building using methods similar to those used by independent appraisers. These methods include using stabilized net operating income, or NOI, and market specific capitalization and discount rates. In allocating the cost of identified intangible assets of an acquired property, the in-place leases are valued based on current rent rates and time and cost to lease a unit. Management concluded that the residential leases acquired in connection with each of its property acquisitions approximate at-market rates since the residential lease terms generally do not extend beyond one year.
Impairment of Long-lived Assets, including Goodwill	Impairment of Long-lived Assets The Company accounts for long-lived assets in accordance with the provisions of accounting standards for the impairment or disposal of long-lived assets. Management periodically evaluates long-lived assets, including investments in real estate, for indicators that would suggest that the carrying amount of the assets may not be recoverable. The judgments regarding the existence of such indicators are based on factors such as operating performance, market conditions and legal factors. Long-lived assets, such as real estate assets, equipment and purchased intangibles subject to amortization, are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable. Recoverability of assets to be held and used is measured by a comparison of the carrying amount of an asset to estimated undiscounted future cash flows expected to be generated by the asset. If the carrying amount of an asset exceeds its estimated future cash flows, an impairment charge is recognized for the amount by which the carrying amount of the asset exceeds the fair value of the asset. Assets to be disposed of are separately presented in the Consolidated Balance Sheets, are reported at the lower of the carrying amount or fair value less costs to sell and are no longer depreciated. The assets and liabilities of a disposed group or a property classified as held for sale are presented separately in the appropriate asset and liability sections of the Consolidated Balance Sheets.
Undeveloped Land	Undeveloped Land Undeveloped land includes sites intended for future multifamily developments, sites for future commercial development and sites intended for residential use, which are carried at the lower of cost or fair value in accordance with GAAP. Any costs incurred prior to commencement of pre-development activities are expensed as incurred.
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 each 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 $43.3 million and $43.7 million as of December 31, 2020 and 2019, respectively. As of December 31, 2020 and 2019, the Company’s investments in the technology-focused limited partnerships were $23.0 million and $13.1 million, respectively, and are included in “Other assets” in the accompanying Consolidated Balance Sheets. As of December 31, 2020, the Company was committed until February 2025 to make additional capital contributions totaling $19.2 million if and when called by the general partners of the limited partnerships.
Cash and Cash Equivalents	Cash and Cash Equivalents Investments in money market accounts and certificates of deposit with original maturities of three months or less are considered to be cash equivalents.
Restricted Cash	Restricted Cash Restricted cash consists of security deposits required to be held separately, escrow deposits held by lenders for property taxes, insurance, debt service and replacement reserves, and exchanges under Section 1031(b) of the Internal Revenue Code of 1986, as amended, or the Code. Section 1031(b) exchanges are presented within cash, cash equivalents and restricted cash reported in the Consolidated Statements of Cash Flows.
Other Assets	Other Assets Other assets consist primarily of receivables and deposits from residents, the value of derivative contracts, right-of-use lease assets, investments in limited partnerships, deferred rental concessions, deferred financing costs relating to a revolving credit facility and other prepaid expenses. Also included in other assets are the fair market value of in-place leases and resident relationships, net of accumulated amortization.
Accrued Expenses and Other Liabilities	Accrued Expenses and Other Liabilities Accrued expenses consist of accrued dividends payable, accrued real estate taxes, accrued interest payable, accrued loss contingencies (see Note 11), accounts payable, right-of-use lease liabilities, security deposits not related to restricted cash, other accrued expenses, and unearned income. Significant accruals include accrued dividends payable of $121.4 million and $118.3 million as of December 31, 2020 and 2019, respectively; accrued real estate taxes of $140.6 million and $131.9 million as of December 31, 2020 and 2019, respectively; unearned income of $48.8 million and $42.0 million as of December 31, 2020 and 2019, respectively; accrued loss contingencies of $5.3 million and $8.6 million as of December 31, 2020 and 2019, respectively; security deposits of $21.6 million and $19.4 million as of December 31, 2020 and 2019, respectively; and accrued interest payable of $24.8 million and $21.4 million as of December 31, 2020 and 2019, respectively.
Income Taxes	Income Taxes MAA has elected to be taxed as a REIT under the Code and intends to continue to operate in such a manner. The current and continuing qualification as a REIT depends on MAA’s ability to meet the various requirements imposed by the Code, which are related to organizational structure, distribution levels, diversity of stock ownership and certain requirements with respect to the nature and diversity of MAA’s assets and sources of MAA’s gross income. As long as MAA qualifies for taxation as a REIT, it will generally not be subject to United States federal corporate income tax on its taxable income that is currently distributed to shareholders. This treatment substantially eliminates the “double taxation” (i.e., income taxation at both the corporate and shareholder levels) that generally results from an investment in a corporation. Even if MAA qualifies as a REIT, MAA may be subject to United States federal income and excise taxes in certain situations, such as if MAA fails to distribute timely all of its taxable income with respect to a taxable year. MAA also will be required to pay a 100% tax on any net income on non-arm’s length transactions between MAA and one of its taxable REIT subsidiaries, or TRS. Furthermore, MAA and its shareholders may be subject to state or local taxation in various state or local jurisdictions, including those in which MAA transacts business or its shareholders reside, and the applicable state and local tax laws may not conform to the United States federal income tax treatment. Any taxes imposed on MAA would reduce its operating cash flows and net income. The Company has elected TRS status for certain of its corporate subsidiaries. As a result, the TRS incur both federal and state income taxes on any taxable income after consideration of any net operating losses. The TRS use the liability method of accounting for income taxes. Deferred income tax assets and liabilities are recognized for future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which those temporary differences are expected to be recovered or settled. The effect on deferred tax assets and liabilities from a change in tax rate is recognized in earnings in the period of the enactment date. A valuation allowance is provided when it is more likely than not that all or some portion of the deferred tax assets will not be realized. The Company recognizes liabilities for uncertain income tax positions based on a two-step process. The first step is to evaluate the tax position for recognition by determining if the weight of available evidence indicates that it is more likely than not that the position will be sustained on audit, including resolution of related appeals or litigation processes, if any. The second step requires the Company to estimate and measure the tax benefit as the largest amount that is more likely than not to be realized upon ultimate settlement. See Note 7 for additional disclosures regarding income taxes.
Fair value of derivative financial instruments	Fair Value Measurements The Company applies the guidance in ASC Topic 820, Fair Value Measurements and Disclosures 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 Revenue from Contracts with Customers
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 December 31, 2020 and December 31, 2019 , right-of-use assets recorded within “Other assets” totaled $49.4 million and $53.8 million , respectively, and related lease obligations recorded within “Accrued expenses and other liabilities” totaled $31.7 million and $33.1 million , respectively, in the Consolidated Balance Sheets. As of December 31, 2020 , the Company’s operating leases had a weighted average remaining lease term of approximately 32 years and a weighted average discount rate of approximately 4.4% . Lease expense recognized for the years ended December 31, 2020, 2019 and 2018 was immaterial to the Company. Cash paid for amounts included in the measurement of operating lease liabilities during the years ended December 31, 2020 and 2019 was also immaterial.
Recently Adopted Accounting Pronouncement	Recently Adopted Accounting Pronouncements Measurement of Credit Losses on Financial Instruments

Earnings Per Common Share of _2

Earnings Per Common Share of MAA (Tables)	12 Months Ended
	Dec. 31, 2020
Earnings Per Common Share Of M A A [Abstract]
Schedule of Computation of Diluted Earnings per Share	For the years ended December 31, 2020, 2019 and 2018, 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): Calculation of Earnings per common share - basic 2020 2019 2018 Net income $ 264,015 $ 366,618 $ 231,022 Net income attributable to noncontrolling interests (9,053 ) (12,807 ) (8,123 ) Unvested restricted stock (allocation of earnings) (338 ) (519 ) (291 ) Preferred dividends (3,688 ) (3,688 ) (3,688 ) Net income available for MAA common shareholders, adjusted $ 250,936 $ 349,604 $ 218,920 Weighted average common shares - basic 114,188 113,854 113,638 Earnings per common share - basic $ 2.20 $ 3.07 $ 1.93 Calculation of Earnings per common share - diluted Net income $ 264,015 $ 366,618 $ 231,022 Net income attributable to noncontrolling interests (9,053 ) (1) (12,807 ) (1) (8,123 ) (1) Preferred dividends (3,688 ) (3,688 ) (3,688 ) Net income available for MAA common shareholders, adjusted $ 251,274 $ 350,123 $ 219,211 Weighted average common shares - basic 114,188 113,854 113,638 Effect of dilutive securities 312 259 198 Weighted average common shares - diluted 114,500 114,113 113,836 Earnings per common share - diluted $ 2.19 $ 3.07 $ 1.93 (1)

Earnings Per OP Unit of MAALP (

Earnings Per OP Unit of MAALP (Tables)	12 Months Ended
	Dec. 31, 2020
Earnings Per Share [Abstract]
Schedule of Diluted Earnings per Common Unit	For the years ended December 31, 2020, 2019 and 2018, 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):

Stock-Based Compensation (Table

Stock-Based Compensation (Tables)	12 Months Ended
	Dec. 31, 2020
Stock Based Compensation [Abstract]
Schedule of Share based Payment Award Restricted Stock Valuation Assumptions	The following is a summary of the key assumptions used in the valuation calculations for market based awards granted during the years ended December 31, 2020, 2019 and 2018: 2020 2019 2018 Risk free rate 1.603% 2.578% 1.61% - 2.14% Dividend yield 3.070% 4.043% 3.884% Volatility 17.02% 18.95% 15.05% - 17.18% Requisite service period 3 years 3 years 3 years
Nonvested Restricted Stock Shares Activity	A summary of the status of the nonvested restricted shares as of December 31, 2020, and the changes for the year ended December 31, 2020, is presented below: Nonvested Shares Shares Weighted Average Grant-Date Fair Value Nonvested as of January 1, 2020 233,878 $ 96.33 Issued 152,729 88.56 Vested (169,198 ) 81.69 Forfeited (559 ) 106.86 Nonvested as of December 31, 2020 216,850 $ 102.10
Share-based Compensation, Stock Options, Activity	A summary of the status of the outstanding stock options as of December 31, 2020 and the changes for the year ended December 31, 2020 is presented below: Stock Options Options Weighted Average Exercise Price Outstanding as of January 1, 2020 20,763 $ 77.82 Exercised (918 ) 77.77 Outstanding as of December 31, 2020 19,845 $ 77.83

Borrowings (Tables)

Borrowings (Tables)	12 Months Ended
	Dec. 31, 2020
Debt Disclosure [Abstract]
Summary of Outstanding Debt	The following table summarizes the Company’s outstanding debt as of December 31, 2020 and 2019 (dollars in thousands): As of December 31, 2020 Unsecured debt December 31, 2020 December 31, 2019 Weighted Average Effective Rate Weighted Average Contract Maturity Variable rate commercial paper program $ 172,000 $ 70,000 0.3 % 1/7/2021 Fixed rate senior notes 3,922,000 3,472,000 3.6 % 1/27/2027 Term loans fixed with swaps — 300,000 — — Debt issuance costs, discounts, premiums and fair market value adjustments (16,627 ) (13,799 ) Total unsecured debt $ 4,077,373 $ 3,828,201 3.5 % Secured debt Fixed rate property mortgages $ 488,709 $ 629,817 4.6 % 1/12/2042 Debt issuance costs and fair market value adjustments (3,370 ) (3,420 ) Total secured debt $ 485,339 $ 626,397 4.6 % Total outstanding debt $ 4,562,712 $ 4,454,598 3.6 %
Scheduled Principal Repayments on Borrowings	The following table includes scheduled principal repayments of MAALP’s outstanding borrowings as of December 31, 2020, as well as the amortization of the fair market value of debt assumed, debt discounts, premiums and issuance costs (in thousands): Year Maturities Amortization Total 2021 $ 363,578 $ (73 ) $ 363,505 2022 367,000 (856 ) 366,144 2023 362,250 (1,858 ) 360,392 2024 420,000 (2,828 ) 417,172 2025 406,588 (3,570 ) 403,018 Thereafter 2,663,293 (10,812 ) 2,652,481 $ 4,582,709 $ (19,997 ) $ 4,562,712

Financial Instruments and Der_2

Financial Instruments and Derivatives (Tables)	12 Months Ended
	Dec. 31, 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 Consolidated Statements of Operations for the years ended December 31, 2020, 2019 and 2018, respectively (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) For the Year ended December 31, 2020 2019 2018 OCL into Income 2020 2019 2018 Interest rate contracts $ — $ (11,676 ) $ (751 ) Interest expense $ (1,088 ) $ 1,747 $ 1,938 (1) Derivatives Not Designated as Hedging Instruments Location of Gain (Loss) Recognized in Gain (Loss) Recognized in Earnings on Derivative For the year ended December 31, Income on Derivative 2020 2019 2018 Preferred stock embedded derivative Other non-operating income $ 2,562 $ 17,886 $ (2,576 )

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2020
Income Taxes [Abstract]
Schedule of Effective Income Tax Rate Reconciliation	For the years ended December 31, 2020, 2019 and 2018, the reconciliation of income tax attributable to continuing operations for the Company’s TRS computed at the U.S. statutory rate to the income tax provision was as follows (in thousands): 2020 2019 2018 Tax expense at U.S. statutory rates on the Company’s TRS income subject to tax $ 763 $ 1,026 $ 115 Valuation allowance — — 127 TRS income tax provision $ 763 $ 1,026 $ 242
Taxability Of Cash Distributions	For income tax purposes, dividends paid to holders of common stock generally consist of ordinary income, return of capital, capital gains, qualified dividends and un-recaptured Section 1250 gains, or a combination thereof. For the years ended December 31, 2020, 2019 and 2018, dividends per share held for the entire year were estimated to be taxable as follows: 2020 2019 2018 Amount Percentage Amount Percentage Amount Percentage Ordinary income $ 4.00 99.98 % $ 3.51 91.39 % $ 3.66 99.26 % Capital gain 0.00 0.02 % 0.21 5.54 % 0.02 0.61 % Un-recaptured Section 1250 gain 0.00 0.00 % 0.12 3.07 % 0.01 0.13 % $ 4.00 100 % $ 3.84 100 % $ 3.69 100 %

Shareholders' Equity of MAA (Ta

Shareholders' Equity of MAA (Tables)	12 Months Ended
	Dec. 31, 2020
Shareholders Equity Of M A A [Abstract]
Schedule of Cumulative Redeemable Preferred Stock	As of December 31, 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.

Commitments and Contingencies (

Commitments and Contingencies (Tables)	12 Months Ended
	Dec. 31, 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 Consolidated Balance Sheets as of December 31, 2020 (in thousands): Operating Leases 2021 $ 2,863 2022 2,894 2023 2,885 2024 2,862 2025 2,872 Thereafter 62,913 Total minimum lease payments 77,289 Net present value adjustments (45,549 ) Operating lease obligations $ 31,740

Segment Information (Tables)

Segment Information (Tables)	12 Months Ended
	Dec. 31, 2020
Notes To Financial Statements [Abstract]
Revenues and NOI for Reportable Segment	Revenues and NOI for each reportable segment for the years ended December 31, 2020, 2019 and 2018 Revenues 2020 2019 2018 Same Store: Rental revenues $ 1,566,079 $ 1,526,101 $ 1,364,744 Reimbursable property revenues — — 91,020 Other property revenues 11,372 12,174 11,696 Total Same Store revenues 1,577,451 1,538,275 1,467,460 Non-Same Store and Other: Rental revenues 100,134 101,503 99,281 Reimbursable property revenues — — 3,744 Other property revenues 399 1,239 861 Total Non-Same Store and Other revenues 100,533 102,742 103,886 Total rental and other property revenues $ 1,677,984 $ 1,641,017 $ 1,571,346 Net Operating Income Same Store NOI $ 979,330 $ 968,190 $ 921,240 Non-Same Store and Other NOI 58,183 59,982 55,518 Total NOI 1,037,513 1,028,172 976,758 Depreciation and amortization (510,842 ) (496,843 ) (489,759 ) Property management expenses (52,300 ) (55,011 ) (47,633 ) General and administrative expenses (46,858 ) (43,845 ) (38,855 ) Merger and integration expenses — — (9,112 ) Interest expense (167,562 ) (179,847 ) (173,594 ) Gain (loss) on sale of depreciable real estate assets 9 80,988 (39 ) Gain on sale of non-depreciable real estate assets 1,024 12,047 4,532 Other non-operating income 4,857 22,999 9,503 Income tax expense (3,327 ) (3,696 ) (2,611 ) Income from real estate joint venture 1,501 1,654 1,832 Net income attributable to noncontrolling interests (9,053 ) (12,807 ) (8,123 ) Dividends to MAA Series I preferred shareholders (3,688 ) (3,688 ) (3,688 ) Net income available for MAA common shareholders $ 251,274 $ 350,123 $ 219,211
Assets for Reportable Segment	Assets for each reportable segment as of December 31, 2020 and 2019 were as follows (in thousands): Assets December 31, 2020 December 31, 2019 Same Store $ 9,714,024 $ 9,975,880 Non-Same Store and Other 1,299,862 1,049,029 Corporate assets 180,905 205,541 Total assets $ 11,194,791 $ 11,230,450

Real Estate Acquisitions and _2

Real Estate Acquisitions and Dispositions (Tables)	12 Months Ended
	Dec. 31, 2020
Real Estate [Abstract]
Schedule of Real Estate Asset Acquisitions and Dispositions	The following table reflects the Company’s acquisition activity for the year ended December 31, 2020: Land Acquisitions Market Acres Date Acquired MAA Windmill Hill Austin, TX 22 January 2020 MAA Central Park Denver, CO 27 November 2020 Novel Val Vista (1) Phoenix, AZ 13 December 2020 (1) The following table reflects the Company’s disposition activity for the year ended December 31, 2020: Land Disposition Market Units Date Sold Colonial Promenade Huntsville, AL 27 September 2020

Organization and Summary of S_3

Organization and Summary of Significant Accounting Policies (Textual) (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2020USD ($)PropertyCommunityStateshares	Dec. 31, 2019USD ($)shares	Dec. 31, 2018USD ($)	Dec. 31, 2023Property	Dec. 31, 2022Property	Dec. 31, 2021Property
Real Estate Properties [Line Items]
General Partners' Capital Account, Units Outstanding | shares	114,373,727	114,246,393
Number of Real Estate Properties | Community	299
Development and capital improvements in progress	$ 283,477	$ 116,424
Number of States in which Entity Operates | State	16
Other non-operating expense (income)	$ 4,857	22,999	$ 9,503
Consolidated assets	11,194,791	11,230,450
Consolidated liabilities	5,090,986	4,926,860
Advertising expenses	23,900	20,800	20,200
Lease Intangibles, Gross	$ 14,277,902	13,864,159
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	$ 49,400	53,800
Operating Lease, Liability	$ 31,740
Operating Lease, Weighted Average Remaining Lease Term	32 years
Operating Lease, Weighted Average Discount Rate, Percent	4.40%
Accounting Standards Update 2016-02 [Member]
Real Estate Properties [Line Items]
Operating Lease, Liability	$ 31,700	$ 33,100
Operating Lease, Liability, Statement of Financial Position [Extensible List]	maa:AccruedExpensesAndOtherLiabilitiesMember	maa:AccruedExpensesAndOtherLiabilitiesMember
Accrued Liabilities [Member]
Real Estate Properties [Line Items]
Dividends Payable	$ 121,400	$ 118,300
Accrued Real Estate Taxes	140,600	131,900
Unearned Income	48,800	42,000
Loss Contingency, Loss in Period	5,300	8,600
Security Deposit Liability	21,600	19,400
Interest Payable	24,800	21,400
Leases, Acquired-in-Place
Real Estate Properties [Line Items]
Lease Intangibles, Gross	1,300	2,600
Parent Company
Real Estate Properties [Line Items]
Capitalized Development Costs, Period	12,700	6,500	4,200
Real Estate [Member]
Real Estate Properties [Line Items]
Real Estate Investments, Joint Ventures	19,200
Real Estate [Member] | Other Assets [Member]
Real Estate Properties [Line Items]
Real Estate Investments, Joint Ventures	23,000	13,100
Real Estate [Member] | Post Massachusetts Avenue [Member]
Real Estate Properties [Line Items]
Real Estate Investments, Joint Ventures	43,300	43,700
Real Estate [Member] | Variable Interest Entity Primary Beneficiary [Member]
Real Estate Properties [Line Items]
Consolidated assets	128,900	46,000
Consolidated liabilities	$ 8,100	3,200
General And Administrative Expense [Member]
Real Estate Properties [Line Items]
Other non-operating expense (income)		$ 2,300
Other non-operating income			4,100
Minimum [Member]
Real Estate Properties [Line Items]
Percentage of ownership interests of all consolidated subsidiaries (percent)	80.00%
Minimum [Member] | Land Improvements And Buildings
Real Estate Properties [Line Items]
Equipment, Useful Life	5 years
Minimum [Member] | Furniture, Fixtures And Equipment
Real Estate Properties [Line Items]
Equipment, Useful Life	3 years
Maximum [Member]
Real Estate Properties [Line Items]
Percentage of ownership interests of all consolidated subsidiaries (percent)	100.00%
Maximum [Member] | Accounting Standards Update 2016-02 [Member]
Real Estate Properties [Line Items]
Operating lease, term of contract	1 year
Maximum [Member] | Land Improvements And Buildings
Real Estate Properties [Line Items]
Equipment, Useful Life	40 years
Maximum [Member] | Furniture, Fixtures And Equipment
Real Estate Properties [Line Items]
Equipment, Useful Life	5 years
Limited Partner [Member]
Real Estate Properties [Line Items]
General Partners' Capital Account, Units Outstanding | shares	114,373,727	114,246,393
Number of Real Estate Properties | Property	1
Development and capital improvements in progress	$ 283,477	$ 116,424
Other non-operating expense (income)	4,857	22,999	$ 9,503
Consolidated assets	11,194,791	11,230,450
Consolidated liabilities	5,091,005	4,926,879
Lease Intangibles, Gross	$ 14,277,902	$ 13,864,159
Limited Partner [Member] | Minimum [Member]
Real Estate Properties [Line Items]
Percentage of ownership interests of all consolidated subsidiaries (percent)	80.00%
Limited Partner [Member] | Maximum [Member]
Real Estate Properties [Line Items]
Percentage of ownership interests of all consolidated subsidiaries (percent)	100.00%
Development Properties [Member]
Real Estate Properties [Line Items]
Number of Real Estate Properties | Community	8
Number of units under development community | Property	2,607
Development Properties [Member] | Expected Costs
Real Estate Properties [Line Items]
Development and capital improvements in progress	$ 595,000
Development Properties [Member] | Costs Incurred To Date
Real Estate Properties [Line Items]
Development and capital improvements in progress	$ 335,600
Development Properties [Member] | Scenario Forecast [Member]
Real Estate Properties [Line Items]
Number of Real Estate Properties | Property				1	2	5
Retail
Real Estate Properties [Line Items]
Number of Real Estate Properties | Property	32
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%

Earnings Per Common Share of _3

Earnings Per Common Share of MAA - Schedule of Computation of Diluted Earnings per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands		12 Months Ended
		Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Earnings Per Share Disclosure [Line Items]
Income from Continuing Operations, Including Portion Attributable to Noncontrolling Interest		$ 264,015	$ 366,618	$ 231,022
Income from continuing operations attributable to noncontrolling interests		(9,053)	(12,807)	(8,123)
Income from continuing operations allocated to unvested restricted shares		(338)	(519)	(291)
Dividends, Preferred Stock, Cash		(3,688)	(3,688)	(3,688)
Income from continuing operations available for common shareholders, adjusted		$ 250,936	$ 349,604	$ 218,920
Weighted average common shares - basic		114,188	113,854	113,638
Earnings per common share - basic		$ 2.20	$ 3.07	$ 1.93
Income from Continuing Operations, Including Portion Attributable to Noncontrolling Interest		$ 264,015	$ 366,618	$ 231,022
Income from continuing operations attributable to noncontrolling interests	[1]	9,053	12,807	8,123
Net income available for MAA common shareholders, adjusted		$ 251,274	$ 350,123	$ 219,211
Effect of dilutive securities		312	259	198
Weighted average common shares - diluted		114,500	114,113	113,836
Net income available for MAA common shareholders		$ 2.19	$ 3.07	$ 1.93
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
[1]

Earnings Per OP Unit of MAALP -

Earnings Per OP Unit of MAALP - Schedule of Diluted Earnings per Common Unit (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Earnings Per Share Disclosure [Line Items]
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	$ 264,015	$ 366,618	$ 231,022
Net income attributable to noncontrolling interests	(9,053)	(12,807)	(8,123)
Dividends, Preferred Stock, Cash	(3,688)	(3,688)	(3,688)
Income from continuing operations available for common shareholders, adjusted	$ 250,936	$ 349,604	$ 218,920
Net income available for MAA common shareholders	$ 2.20	$ 3.07	$ 1.93
Net income available for MAALP common unitholders, adjusted	$ 251,274	$ 350,123	$ 219,211
Effect of dilutive securities	312,000	259,000	198,000
Weighted average common shares - diluted	114,500,000	114,113,000	113,836,000
Earnings per common unit - diluted	$ 2.19	$ 3.07	$ 1.93
Limited Partner [Member]
Earnings Per Share Disclosure [Line Items]
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	$ 264,015	$ 366,618	$ 231,022
Net income attributable to noncontrolling interests		(136)
Income from continuing operations allocated to unvested restricted shares	(338)	(519)	(291)
Dividends, Preferred Stock, Cash	(3,688)	(3,688)	(3,688)
Income from continuing operations available for common shareholders, adjusted	$ 259,989	$ 362,275	$ 227,043
Weighted average common units - basic	118,248	117,944	117,777
Net income available for MAA common shareholders	$ 2.20	$ 3.07	$ 1.93
Net income available for MAALP common unitholders, adjusted	$ 260,327	$ 362,794	$ 227,334
Effect of dilutive securities	312	259	198
Weighted average common shares - diluted	118,560	118,203	117,975
Earnings per common unit - diluted	$ 2.20	$ 3.07	$ 1.93

Stock-Based Compensation - Addi

Stock-Based Compensation - Additional Information (Details) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Allocated Share-based Compensation Expense	$ 16	$ 14.7	$ 12.9
Employee Service Share-based Compensation, Allocation of Recognized Period Costs, Capitalized Amount	1.7	1	0.5
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized	$ 14.3
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition	9 years 18 months
Employee Service Share-based Compensation, Cash Flow Effect, Cash Used to Settle Awards	$ 5.7	3.7	2.9
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value	$ 13.9	$ 9.3	$ 7.6
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross	0	0	0
Share Based Compensation Arrangement By Share Based Payment Award Options Expirations In Period	0	0	0
Exercise of stock options, Shares	918
Minimum [Member] | Risk Free Rate [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Requisite service period			3 months
Minimum [Member] | Volatility [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Requisite service period			1 year
Maximum [Member] | Risk Free Rate [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Requisite service period			3 years
Maximum [Member] | Volatility [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Requisite service period			3 years
Restricted Stock
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value	$ 100.53	$ 72.98	$ 71.85
Requisite service period	3 years	3 years	3 years
Restricted Stock | Maximum [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	5 years
Employee Stock Option [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Intrinsic Value	$ 1
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Remaining Contractual Term	4 years 2 months 12 days
Exercise of stock options, Shares	918	69,852	17,823
Proceeds from Stock Options Exercised	$ 0.1	$ 2.9	$ 0.9
Employee Stock Option [Member] | Minimum [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	3 months 18 days
Employee Stock Option [Member] | Maximum [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	2 years 3 months 18 days
2013 Stock Incentive Plan [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized	2,000,000

Stock-Based Compensation Key As

Stock-Based Compensation Key Assumptions for Restricted Stock Grants (Details) - Restricted Stock	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Risk free rate	1.603%	2.578%
Risk free rate, Minimum			1.61%
Risk free rate, Maximum			2.14%
Dividend yield	3.07%	4.043%	3.884%
Volatility	17.02%	18.95%
Volatility, Minimum			15.05%
Volatility, Maximum			17.18%
Requisite service period	3 years	3 years	3 years

Stock-Based Compensation Status

Stock-Based Compensation Status of Nonvested Restricted Shares (Details) - Restricted Stock	12 Months Ended
	Dec. 31, 2020$ / sharesshares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Nonvested as of January 1, 2020 | shares	233,878
Issued | shares	152,729
Vested | shares	(169,198)
Forfeited | shares	(559)
Nonvested as of December 31, 2020 | shares	216,850
Nonvested as of January 1, 2020 | $ / shares	$ 96.33
Issued | $ / shares	88.56
Vested | $ / shares	81.69
Forfeited | $ / shares	106.86
Nonvested as of December 31, 2020 | $ / shares	$ 102.10

Stock-Based Compensation Stat_2

Stock-Based Compensation Status of Outstanding Stock Options (Details)	12 Months Ended
	Dec. 31, 2020$ / sharesshares
Statusof Stock Options [Abstract]
Outstanding as of January 1, 2020 | shares	20,763
Exercised | shares	(918)
Outstanding as of December 31, 2020 | shares	19,845
Outstanding as of January 1, 2020 | $ / shares	$ 77.82
Exercised | $ / shares	77.77
Outstanding as of December 31, 2020 | $ / shares	$ 77.83

Borrowings - Summary of Outstan

Borrowings - Summary of Outstanding Debt (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Debt Instrument [Line Items]
Total Outstanding Debt	$ 4,562,712	$ 4,454,598
Debt Instrument, Interest Rate, Effective Percentage	3.60%
Fixed Rate Property Mortgages [Member]
Debt Instrument [Line Items]
Contract Maturity	Jan. 12, 2042
Unsecured Debt [Member]
Debt Instrument [Line Items]
Total Outstanding Debt	$ 4,077,373	3,828,201
Debt Instrument, Interest Rate, Effective Percentage	3.50%
Unsecured Debt [Member] | Fixed Rate Debt Senior Notes [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount	$ 3,922,000	3,472,000
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	$ 172,000	70,000
Debt Instrument, Interest Rate, Effective Percentage	0.30%
Contract Maturity	Jan. 7, 2021
Unsecured Debt [Member] | Term Loan [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount		300,000
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	$ (16,627)	(13,799)
Secured Debt [Member]
Debt Instrument [Line Items]
Total Outstanding Debt	$ 485,339	626,397
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	$ (3,370)	(3,420)
Secured Debt [Member] | Fixed Rate Property Mortgages [Member]
Debt Instrument [Line Items]
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate	$ 488,709	$ 629,817
Debt Instrument, Interest Rate, Effective Percentage	4.60%

Borrowings - Additional Informa

Borrowings - Additional Information (Details)	1 Months Ended		12 Months Ended
	Aug. 31, 2020USD ($)	Jul. 31, 2020USD ($)ApartmentUnit	Dec. 31, 2020USD ($)	Dec. 31, 2019USD ($)
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Effective Percentage			3.60%
Commercial Paper Notes [Member]
Debt Instrument [Line Items]
Debt Instrument, Payment Terms			397
Debt Instrument, Face Amount			$ 172,000,000
Maximum [Member] | Commercial Paper Notes [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount			$ 500,000,000
Secured Debt [Member] | Fixed Rate Debt Senior Notes [Member]
Debt Instrument [Line Items]
Debt Instrument, Maturity Date			Dec. 31, 2042
Debt Instrument, Interest Rate, Effective Percentage			4.60%
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate			$ 488,700,000
Unsecured Debt [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Effective Percentage			3.50%
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	$ 3,472,000,000
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 1 month 6 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
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
Unsecured Debt [Member] | Private Placement [Member] | Fixed Rate Debt Senior Notes [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount			$ 222,000,000
Unsecured Debt [Member] | 1.700% Notes Due 2031 [Member]
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
Debt Instrument, Interest Rate, Stated Percentage	1.70%
Debt Instrument, Interest Rate, Effective Percentage	1.76%
Debt Instrument, Redemption Price, Percentage	99.465%
Debt Issuance Costs, Gross	$ 5,300,000
Proceeds from Debt, Net of Issuance Costs	444,700,000
Unsecured Debt [Member] | Wells Fargo Term Loan [Member]
Debt Instrument [Line Items]
Repayments of Unsecured Debt	$ 300,000,000
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

Borrowings (Scheduled Principal

Borrowings (Scheduled Principal Repayments on Borrowings) (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Debt Instrument [Line Items]
2021	$ 363,505
2022	366,144
2023	360,392
2024	417,172
2025	403,018
Thereafter	2,652,481
Total Outstanding Debt	4,562,712	$ 4,454,598
Maturities
Debt Instrument [Line Items]
2021	363,578
2022	367,000
2023	362,250
2024	420,000
2025	406,588
Thereafter	2,663,293
Total Outstanding Debt	4,582,709
Amortization Other [Member]
Debt Instrument [Line Items]
2021	(73)
2022	(856)
2023	(1,858)
2024	(2,828)
2025	(3,570)
Thereafter	(10,812)
Total Outstanding Debt	$ (19,997)

Financial Instruments and Der_3

Financial Instruments and Derivatives - Additional Information (Details) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2020USD ($)Contract$ / shares	Dec. 31, 2019USD ($)
Derivative [Line Items]
Preferred Stock Redemption Price Per Share | $ / shares	$ 50
Preferred Stock, Redemption Date	Oct. 1, 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	$ 39	$ 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] | Maximum [Member]
Derivative [Line Items]
Debt Renewal Period	30 days
Fixed Rate Debt [Member]
Derivative [Line Items]
Notes Payable Excluding Interest Rate Swaps and Cap Agreements	$ 4,400	4,100
Notes Payable, Fair Value Disclosure	4,900	4,500
Floating Rate Debt [Member]
Derivative [Line Items]
Notes Payable Excluding Interest Rate Swaps and Cap Agreements	172	370
Notes Payable, Fair Value Disclosure	$ 172	$ 370

Financial Instruments and Der_4

Financial Instruments and Derivatives - Effect of Derivative Instruments on Consolidated Statement of Operations (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Derivative [Line Items]
Unrealized (loss) gain from the effective portion of derivative instruments		$ (11,676)	$ (751)
Derivative Instruments, (Loss) Gain Recognized in Income, Net	$ 2,562	17,886	(2,576)
Designated as Hedging Instrument | Interest Expense
Derivative [Line Items]
Amount of Gain or (Loss) Reclassified from Accumulated OCI into Income (Effective Portion)	(1,088)	1,747	1,938
Designated as Hedging Instrument | Interest Rate Contract
Derivative [Line Items]
Unrealized (loss) gain from the effective portion of derivative instruments		(11,676)	(751)
Not Designated as Hedging Instrument | Interest Expense
Derivative [Line Items]
Derivative Instruments, (Loss) Gain Recognized in Income, Net	$ 2,562	$ 17,886	$ (2,576)

Income Taxes Reconciliation of

Income Taxes Reconciliation of Income Tax Attributable to Continuing Operations (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Investments Owned Federal Income Tax Note [Line Items]
Income tax expense/(benefit)	$ 3,327	$ 3,696	$ 2,611
Subsidiary of Common Parent
Investments Owned Federal Income Tax Note [Line Items]
Tax expense at U.S. statutory rates on the Company’s TRS income subject to tax	763	1,026	115
Valuation Allowance Change in Amount			127
Income tax expense/(benefit)	$ 763	$ 1,026	$ 242

Income Taxes (Textual) (Details

Income Taxes (Textual) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Disclosure Income Taxes Additional Information [Abstract]
Income tax expense	$ 3.3	$ 3.7	$ 2.6
Operating Loss Carryforwards	$ 62

Income Taxes (Taxability of Cas

Income Taxes (Taxability of Cash Distributions Paid on Common Shares) (Details) - $ / shares	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Disclosure Taxability Of Cash Distributions Paid On Common Shares [Abstract]
Ordinary income (dollars per share)	$ 4	$ 3.51	$ 3.66
Return of capital (dollars per share)	0	0.21	0.02
Un-recaptured Section 1250 gain dividends per share	0	0.12	0.01
Total (dollars per share)	$ 4	$ 3.84	$ 3.69
Ordinary income (percentage per share)	99.98%	91.39%	99.26%
Return of capital (percentage per share)	0.02%	5.54%	0.61%
Un-recaptured Section 1250 gain dividends per share percentage	0.00%	3.07%	0.13%
Total (percentage per share)	100.00%	100.00%	100.00%

Shareholders' Equity of MAA - A

Shareholders' Equity of MAA - Additional Information (Details) - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Equity [Line Items]
Common stock, shares outstanding	114,373,727	114,246,393
Total common shares and operating partnership units outstanding	118,431,384	118,313,567
Common stock, shares authorized	145,000,000	145,000,000
At The Market Offering
Equity [Line Items]
Common stock shares sold	146,301
Net proceeds from share issued	$ 19,600,000
Remaining common stock to sale	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
Dividend And Distribution Reinvestment And Share Purchase Plan
Equity [Line Items]
Common stock issued for shareholders to reinvest distributions (shares)	8,259	16,219	9,721
Dividend And Distribution Reinvestment And Share Purchase Plan | Minimum [Member]
Equity [Line Items]
Optional cash investments in common shares	$ 250
Dividend And Distribution Reinvestment And Share Purchase Plan | Maximum [Member]
Equity [Line Items]
Optional cash investments in common shares	$ 5,000
Common stock, shares authorized	1,940,500
Discount rate on sale of common stock (percent)	5.00%
Noncontrolling Interest
Equity [Line Items]
Common Shares Issuable Upon Conversion Of Convertible Stock	4,057,657	4,067,174

Shareholders' Equity of MAA - S

Shareholders' Equity of MAA - Schedule of Cumulative Redeemable Preferred Stock (Details) - $ / shares	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Equity [Line Items]
Preferred Stock, Shares Outstanding	867,846	867,846
Preferred Stock, Liquidation Preference Per Share	$ 50	$ 50
Preferred Stock, Redemption Date	Oct. 1, 2026
Preferred Stock Redemption Price Per Share	$ 50
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

Shareholders' Equity of MAA -_2

Shareholders' Equity of MAA - Schedule of Cumulative Redeemable Preferred Stock (Parenthetical) (Details) $ in Millions	Dec. 31, 2020USD ($)
M A A Equity [Abstract]
Preferred Stock, Liquidation Preference, Value	$ 43.4

Partners' Capital of MAALP - Ad

Partners' Capital of MAALP - Additional Information (Details) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Schedule Of Capital Structure [Line Items]
Operating partnership units outstanding	118,431,384	118,313,567
General Partners' Capital Account, Units Outstanding	114,373,727	114,246,393
Limited Partners' Capital Account, Units Outstanding	4,057,657	4,067,174
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	4,057,657	4,067,174
Limited Partners' Capital Account	$ 514.1	$ 536.3
Redeemable Capital Shares Par Or Stated Value Per Share	$ 126.69	$ 131.86
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%

Employee Benefit Plans (Details

Employee Benefit Plans (Details) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2020USD ($)Installment$ / sharesshares	Dec. 31, 2019USD ($)$ / sharesshares	Dec. 31, 2018USD ($)$ / sharesshares
Defined Benefit Plan Disclosure [Line Items]
Employer contribution for defined contribution plan	$ 3.9	$ 3.5	$ 3.2
Employee Stock Ownership Plan, common stock, fair value	$ 16.6
Employee Stock Ownership Plan, common stock, shares outstanding (shares) | shares	130,664
Nonqualified Deferred Compensation Plan
Defined Benefit Plan Disclosure [Line Items]
Deferred compensation expense	$ 0.4	$ 0.3	$ 0.3
Number of annual installments of deferred compensation (installment) | Installment	2
Number of days after departure from board of directors for payment of deferred compensation (days)	90 days
Outside Directors
Defined Benefit Plan Disclosure [Line Items]
Number of deferred common stock (shares) | shares	10,593	10,738	12,240
Vested | $ / shares	$ 111.19	$ 117.73	$ 92.63

Commitments and Contingencies -

Commitments and Contingencies - Additional Information (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Loss Contingencies [Line Items]
Loss Contingency Accrual	$ 5.3	$ 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

Commitments and Contingencies_2

Commitments and Contingencies - Schedule of Operating Lease Obligations (Details) $ in Thousands	Dec. 31, 2020USD ($)
Loss Contingency [Abstract]
Operating Leases, Future Minimum Payments Due, Next Twelve Months	$ 2,863
Operating Leases, Future Minimum Payments, Due in Two Years	2,894
Operating Leases, Future Minimum Payments, Due in Three Years	2,885
Operating Leases, Future Minimum Payments, Due in Four Years	2,862
Operating Leases, Future Minimum Payments, Due in Five Years	2,872
Operating Leases, Future Minimum Payments, Due Thereafter	62,913
Operating Leases, Future Minimum Payments Due	77,289
Net present value adjustments	(45,549)
Operating Lease, Liability	$ 31,740

Related Party Transactions (Det

Related Party Transactions (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Related Party Transactions [Abstract]
Due to general partner	$ 19,000	$ 19,000

Segment Information - Additiona

Segment Information - Additional Information (Details)	12 Months Ended
	Dec. 31, 2020CommunityStateSegment
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

Segment Information - Revenues

Segment Information - Revenues and NOI for Reportable Segment (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Segment Information
Total operating revenues	$ 1,677,984	$ 1,641,017	$ 1,571,346
Rental and other property revenues	1,677,984	1,641,017	1,571,346
Net Operating Income	1,037,513	1,028,172	976,758
Depreciation and amortization	(510,842)	(496,843)	(489,759)
Other Cost and Expense, Operating	(52,300)	(55,011)	(47,633)
General and administrative expenses	(46,858)	(43,845)	(38,855)
Business Combination, Merger and Integration Related Expenses	0	0	(9,112)
Interest expense	(167,562)	(179,847)	(173,594)
Gain (loss) on sale of depreciable real estate assets	9	80,988	(39)
Gain on sale of non-depreciable real estate assets	1,024	12,047	4,532
Other non-operating expense (income)	4,857	22,999	9,503
Income tax expense	(3,327)	(3,696)	(2,611)
Gain (loss) from real estate joint ventures	1,501	1,654	1,832
Net income attributable to noncontrolling interests	(9,053)	(12,807)	(8,123)
Preferred Stock Dividends, Income Statement Impact	(3,688)	(3,688)	(3,688)
Net income available for MAA common shareholders	251,274	350,123	219,211
Same Store [Member]
Segment Information
Revenue from Contract with Customer, Including Assessed Tax	1,566,079	1,526,101	1,364,744
Property Management Fee Revenue			91,020
Other Operating Income	11,372	12,174	11,696
Total operating revenues	1,577,451	1,538,275	1,467,460
Rental and other property revenues	1,577,451	1,538,275	1,467,460
Net Operating Income	979,330	968,190	921,240
Non-Same Store and Other
Segment Information
Revenue from Contract with Customer, Including Assessed Tax	100,134	101,503	99,281
Property Management Fee Revenue			3,744
Other Operating Income	399	1,239	861
Total operating revenues	100,533	102,742	103,886
Rental and other property revenues	100,533	102,742	103,886
Net Operating Income	$ 58,183	$ 59,982	$ 55,518

Segment Information - Assets fo

Segment Information - Assets for Reportable Segment (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Segment Reporting Asset Reconciling Item [Line Items]
Total assets	$ 11,194,791	$ 11,230,450
Same Store [Member]
Segment Reporting Asset Reconciling Item [Line Items]
Total assets	9,714,024	9,975,880
Non-Same Store and Other
Segment Reporting Asset Reconciling Item [Line Items]
Total assets	1,299,862	1,049,029
Corporate Segment
Segment Reporting Asset Reconciling Item [Line Items]
Total assets	$ 180,905	$ 205,541

Real Estate Acquisitions and _3

Real Estate Acquisitions and Dispositions - Schedule of Real Estate Asset Acquisitions and Dispositions (Details) - Land	12 Months Ended
	Dec. 31, 2020aApartmentUnit
Huntsville, AL [Member] | Colonial Promenade [Member]
Business Acquisitions and Dispositions [Line Items]
Number of Units in Real Estate Property | ApartmentUnit	27
Disposal Date	September 2020
MAA Windmill Hill [Member] | Austin TX [Member]
Business Acquisitions and Dispositions [Line Items]
Area of Land	22
Acquisition Date	2020-01
Novel Val Vista [Member] | Phoenix, AZ [Member]
Business Acquisitions and Dispositions [Line Items]
Area of Land	13	[1]
Acquisition Date	2020-12	[1]
MAA Central Park [Member] | Denver CO [Member]
Business Acquisitions and Dispositions [Line Items]
Area of Land	27
Acquisition Date	2020-11
[1]

Real Estate Acquisitions and _4

Real Estate Acquisitions and Dispositions - Schedule of Real Estate Asset Acquisitions and Dispositions (Parenthetical) (Details)	Dec. 31, 2020
Novel Val Vista [Member]
Business Acquisitions and Dispositions [Line Items]
Joint venture interest	80.00%

Subsequent Events - Additional

Subsequent Events - Additional Information (Details) - Eight Property Mortgage [Member] - Secured Debt [Member] $ in Millions	Feb. 10, 2021USD ($)ApartmentUnit
Debt Instrument [Line Items]
Repayments of Secured Debt | $	$ 118.6
Number of Apartment Communities | ApartmentUnit	8

Schedule III Real Estate and _2

Schedule III Real Estate and Accumulated Depreciation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Real Estate And Accumulated Depreciation [Line Items]
Location	Total Real Estate Assets, net of Real Estate Joint Venture
Encumbrances	$ 6,588
Initial Cost Land	1,960,547
Initial Cost Buildings and Fixtures	10,112,798
Gross Amount, Land	1,990,174
Gross Amount, Buildings and Fixtures	12,348,721
Total	14,338,895	$ 13,898,707	$ 13,656,807	$ 13,292,039
Accumulated Depreciation	(3,415,105)	$ (2,955,253)	$ (2,549,287)	$ (2,075,071)
Net	10,923,790
Land
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	29,627
Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	2,235,923
Total Residential Properties
Real Estate And Accumulated Depreciation [Line Items]
Encumbrances	6,588
Initial Cost Land	1,820,908
Initial Cost Buildings and Fixtures	9,941,939
Gross Amount, Land	1,826,125
Gross Amount, Buildings and Fixtures	11,823,840
Total	13,649,965
Accumulated Depreciation	(3,360,649)
Net	10,289,316
Total Residential Properties | Land
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	5,217
Total Residential Properties | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	1,881,901
Total Properties In Predevelopment
Real Estate And Accumulated Depreciation [Line Items]
Gross Amount, Land	12,572
Gross Amount, Buildings and Fixtures	2,396
Total	14,968
Accumulated Depreciation	(58)
Net	14,910
Total Properties In Predevelopment | Land
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	12,572
Total Properties In Predevelopment | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 2,396
Wholly Owned Properties - Residential | Birchall At Ross Bridge
Real Estate And Accumulated Depreciation [Line Items]
Location	Birmingham, AL
Initial Cost Land	$ 2,640
Initial Cost Buildings and Fixtures	28,842
Gross Amount, Land	2,640
Gross Amount, Buildings and Fixtures	31,562
Total	34,202
Accumulated Depreciation	(10,147)
Net	$ 24,055
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2009
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2011
Wholly Owned Properties - Residential | Birchall At Ross Bridge | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 2,720
Wholly Owned Properties - Residential | Colonial Grand At Riverchase Trails
Real Estate And Accumulated Depreciation [Line Items]
Location	Birmingham, AL
Initial Cost Land	$ 3,761
Initial Cost Buildings and Fixtures	22,079
Gross Amount, Land	3,761
Gross Amount, Buildings and Fixtures	27,670
Total	31,431
Accumulated Depreciation	(9,480)
Net	$ 21,951
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2010
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2013
Wholly Owned Properties - Residential | Colonial Grand At Riverchase Trails | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 5,591
Wholly Owned Properties - Residential | Colonial Village At Trussville
Real Estate And Accumulated Depreciation [Line Items]
Location	Birmingham, AL
Initial Cost Land	$ 3,402
Initial Cost Buildings and Fixtures	31,813
Gross Amount, Land	3,402
Gross Amount, Buildings and Fixtures	35,684
Total	39,086
Accumulated Depreciation	(11,493)
Net	$ 27,593
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2013
Wholly Owned Properties - Residential | Colonial Village At Trussville | Phase I [Member]
Real Estate And Accumulated Depreciation [Line Items]
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1996
Wholly Owned Properties - Residential | Colonial Village At Trussville | Phase II [Member]
Real Estate And Accumulated Depreciation [Line Items]
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1997
Wholly Owned Properties - Residential | Colonial Village At Trussville | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 3,871
Wholly Owned Properties - Residential | Eagle Ridge
Real Estate And Accumulated Depreciation [Line Items]
Location	Birmingham, AL
Initial Cost Land	$ 851
Initial Cost Buildings and Fixtures	7,667
Gross Amount, Land	851
Gross Amount, Buildings and Fixtures	12,140
Total	12,991
Accumulated Depreciation	(8,352)
Net	$ 4,639
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1986
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 1998
Wholly Owned Properties - Residential | Eagle Ridge | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 4,473
Wholly Owned Properties - Residential | Colonial Grand At Traditions
Real Estate And Accumulated Depreciation [Line Items]
Location	Gulf Shores, AL
Initial Cost Land	$ 3,211
Initial Cost Buildings and Fixtures	25,162
Gross Amount, Land	3,211
Gross Amount, Buildings and Fixtures	28,896
Total	32,107
Accumulated Depreciation	(9,766)
Net	$ 22,341
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2007
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2013
Wholly Owned Properties - Residential | Colonial Grand At Traditions | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 3,734
Wholly Owned Properties - Residential | Colonial Grand At Edgewater
Real Estate And Accumulated Depreciation [Line Items]
Location	Huntsville, AL
Initial Cost Land	$ 4,943
Initial Cost Buildings and Fixtures	38,673
Gross Amount, Land	4,943
Gross Amount, Buildings and Fixtures	46,319
Total	51,262
Accumulated Depreciation	(13,207)
Net	$ 38,055
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1990
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2013
Wholly Owned Properties - Residential | Colonial Grand At Edgewater | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 7,646
Wholly Owned Properties - Residential | Paddock Clubat Providence
Real Estate And Accumulated Depreciation [Line Items]
Location	Huntsville, AL
Initial Cost Land	$ 909
Initial Cost Buildings and Fixtures	10,152
Gross Amount, Land	1,739
Gross Amount, Buildings and Fixtures	24,571
Total	26,310
Accumulated Depreciation	(15,550)
Net	$ 10,760
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1993
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 1997
Wholly Owned Properties - Residential | Paddock Clubat Providence | Land
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 830
Wholly Owned Properties - Residential | Paddock Clubat Providence | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 14,419
Wholly Owned Properties - Residential | Colonial Grand At Madison
Real Estate And Accumulated Depreciation [Line Items]
Location	Madison, AL
Initial Cost Land	$ 3,601
Initial Cost Buildings and Fixtures	28,934
Gross Amount, Land	3,601
Gross Amount, Buildings and Fixtures	31,041
Total	34,642
Accumulated Depreciation	(10,251)
Net	$ 24,391
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2000
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2013
Wholly Owned Properties - Residential | Colonial Grand At Madison | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 2,107
Wholly Owned Properties - Residential | Cypress Village
Real Estate And Accumulated Depreciation [Line Items]
Location	Orange Beach, AL
Initial Cost Land	$ 1,290
Initial Cost Buildings and Fixtures	12,238
Gross Amount, Land	1,290
Gross Amount, Buildings and Fixtures	14,674
Total	15,964
Accumulated Depreciation	(4,390)
Net	$ 11,574
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2008
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2013
Wholly Owned Properties - Residential | Cypress Village | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 2,436
Wholly Owned Properties - Residential | Colonial Grand At Liberty Park
Real Estate And Accumulated Depreciation [Line Items]
Location	Vestavia Hills, AL
Initial Cost Land	$ 3,922
Initial Cost Buildings and Fixtures	30,977
Gross Amount, Land	3,922
Gross Amount, Buildings and Fixtures	37,998
Total	41,920
Accumulated Depreciation	(12,569)
Net	$ 29,351
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2000
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2013
Wholly Owned Properties - Residential | Colonial Grand At Liberty Park | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 7,021
Wholly Owned Properties - Residential | Sky View Ranch
Real Estate And Accumulated Depreciation [Line Items]
Location	Gilbert, AZ
Initial Cost Land	$ 2,668
Initial Cost Buildings and Fixtures	14,577
Gross Amount, Land	2,668
Gross Amount, Buildings and Fixtures	17,524
Total	20,192
Accumulated Depreciation	(7,180)
Net	$ 13,012
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2007
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2009
Wholly Owned Properties - Residential | Sky View Ranch | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 2,947
Wholly Owned Properties - Residential | Colonial Grand At Inverness Commons
Real Estate And Accumulated Depreciation [Line Items]
Location	Mesa, AZ
Initial Cost Land	$ 4,219
Initial Cost Buildings and Fixtures	26,255
Gross Amount, Land	4,219
Gross Amount, Buildings and Fixtures	29,667
Total	33,886
Accumulated Depreciation	(8,961)
Net	$ 24,925
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2002
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2013
Wholly Owned Properties - Residential | Colonial Grand At Inverness Commons | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 3,412
Wholly Owned Properties - Residential | Edge At Lyons Gate
Real Estate And Accumulated Depreciation [Line Items]
Location	Phoenix, AZ
Initial Cost Land	$ 7,901
Initial Cost Buildings and Fixtures	27,182
Gross Amount, Land	7,901
Gross Amount, Buildings and Fixtures	30,231
Total	38,132
Accumulated Depreciation	(13,033)
Net	$ 25,099
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2007
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2008
Wholly Owned Properties - Residential | Edge At Lyons Gate | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 3,049
Wholly Owned Properties - Residential | Residencesat Fountainhead
Real Estate And Accumulated Depreciation [Line Items]
Location	Phoenix, AZ
Initial Cost Land	$ 12,212
Initial Cost Buildings and Fixtures	56,705
Gross Amount, Land	12,212
Gross Amount, Buildings and Fixtures	58,754
Total	70,966
Accumulated Depreciation	(8,281)
Net	$ 62,685
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2015
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2016
Wholly Owned Properties - Residential | Residencesat Fountainhead | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 2,049
Wholly Owned Properties - Residential | Talus Ranch
Real Estate And Accumulated Depreciation [Line Items]
Location	Phoenix, AZ
Initial Cost Land	$ 12,741
Initial Cost Buildings and Fixtures	47,701
Gross Amount, Land	12,741
Gross Amount, Buildings and Fixtures	52,824
Total	65,565
Accumulated Depreciation	(24,977)
Net	$ 40,588
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2005
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2006
Wholly Owned Properties - Residential | Talus Ranch | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 5,123
Wholly Owned Properties - Residential | Colonial Grandat Old Town Scottsdale
Real Estate And Accumulated Depreciation [Line Items]
Location	Scottsdale, AZ
Initial Cost Land	$ 7,820
Initial Cost Buildings and Fixtures	51,627
Gross Amount, Land	7,820
Gross Amount, Buildings and Fixtures	57,391
Total	65,211
Accumulated Depreciation	(17,704)
Net	$ 47,507
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2013
Wholly Owned Properties - Residential | Colonial Grandat Old Town Scottsdale | Phase I [Member]
Real Estate And Accumulated Depreciation [Line Items]
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1994
Wholly Owned Properties - Residential | Colonial Grandat Old Town Scottsdale | Phase II [Member]
Real Estate And Accumulated Depreciation [Line Items]
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1995
Wholly Owned Properties - Residential | Colonial Grandat Old Town Scottsdale | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 5,764
Wholly Owned Properties - Residential | Colonial Grand At Scottsdale
Real Estate And Accumulated Depreciation [Line Items]
Location	Scottsdale, AZ
Initial Cost Land	$ 3,612
Initial Cost Buildings and Fixtures	20,273
Gross Amount, Land	3,612
Gross Amount, Buildings and Fixtures	22,997
Total	26,609
Accumulated Depreciation	(7,312)
Net	$ 19,297
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2013
Wholly Owned Properties - Residential | Colonial Grand At Scottsdale | Phase I [Member]
Real Estate And Accumulated Depreciation [Line Items]
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1999
Wholly Owned Properties - Residential | Colonial Grand At Scottsdale | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 2,724
Wholly Owned Properties - Residential | Sky Song
Real Estate And Accumulated Depreciation [Line Items]
Location	Scottsdale, AZ
Initial Cost Buildings and Fixtures	$ 55,748
Gross Amount, Buildings and Fixtures	58,633
Total	58,633
Accumulated Depreciation	(8,802)
Net	$ 49,831
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2014
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2015
Wholly Owned Properties - Residential | Sky Song | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 2,885
Wholly Owned Properties - Residential | Post River North [Member]
Real Estate And Accumulated Depreciation [Line Items]
Location	Denver, CO
Initial Cost Land	$ 14,500
Initial Cost Buildings and Fixtures	28,900
Gross Amount, Land	14,500
Gross Amount, Buildings and Fixtures	69,524
Total	84,024
Accumulated Depreciation	(7,424)
Net	$ 76,600
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2018
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2016
Wholly Owned Properties - Residential | Post River North [Member] | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 40,624
Wholly Owned Properties - Residential | Sync36 I
Real Estate And Accumulated Depreciation [Line Items]
Location	Denver, CO
Initial Cost Land	$ 18,887
Initial Cost Buildings and Fixtures	81,317
Gross Amount, Land	19,021
Gross Amount, Buildings and Fixtures	86,601
Total	105,622
Accumulated Depreciation	(6,805)
Net	$ 98,817
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2017
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2018
Wholly Owned Properties - Residential | Sync36 I | Land
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 134
Wholly Owned Properties - Residential | Sync36 I | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 5,284
Wholly Owned Properties - Residential | Sync36 I I
Real Estate And Accumulated Depreciation [Line Items]
Location	Denver, CO
Initial Cost Land	$ 5,090
Gross Amount, Land	5,090
Gross Amount, Buildings and Fixtures	16,828
Total	21,918
Accumulated Depreciation	(1,145)
Net	$ 20,773
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2019
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2018
Wholly Owned Properties - Residential | Sync36 I I | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 16,828
Wholly Owned Properties - Residential | Tiffany Oaks
Real Estate And Accumulated Depreciation [Line Items]
Location	Altamonte Springs, FL
Initial Cost Land	$ 1,024
Initial Cost Buildings and Fixtures	9,219
Gross Amount, Land	1,024
Gross Amount, Buildings and Fixtures	14,663
Total	15,687
Accumulated Depreciation	(10,831)
Net	$ 4,856
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1985
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 1996
Wholly Owned Properties - Residential | Tiffany Oaks | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 5,444
Wholly Owned Properties - Residential | Colonial Grand At Lakewood Ranch
Real Estate And Accumulated Depreciation [Line Items]
Location	Bradenton, FL
Initial Cost Land	$ 2,980
Initial Cost Buildings and Fixtures	40,230
Gross Amount, Land	2,980
Gross Amount, Buildings and Fixtures	45,592
Total	48,572
Accumulated Depreciation	(13,905)
Net	$ 34,667
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1999
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2013
Wholly Owned Properties - Residential | Colonial Grand At Lakewood Ranch | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 5,362
Wholly Owned Properties - Residential | Indigo Point
Real Estate And Accumulated Depreciation [Line Items]
Location	Brandon, FL
Initial Cost Land	$ 1,167
Initial Cost Buildings and Fixtures	10,500
Gross Amount, Land	1,167
Gross Amount, Buildings and Fixtures	14,405
Total	15,572
Accumulated Depreciation	(9,584)
Net	$ 5,988
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1989
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2000
Wholly Owned Properties - Residential | Indigo Point | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 3,905
Wholly Owned Properties - Residential | Paddock Club Brandon
Real Estate And Accumulated Depreciation [Line Items]
Location	Brandon, FL
Initial Cost Land	$ 2,896
Initial Cost Buildings and Fixtures	26,111
Gross Amount, Land	2,896
Gross Amount, Buildings and Fixtures	33,050
Total	35,946
Accumulated Depreciation	(22,893)
Net	$ 13,053
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1998
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 1997
Wholly Owned Properties - Residential | Paddock Club Brandon | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 6,939
Wholly Owned Properties - Residential | Preserve At Coral Square
Real Estate And Accumulated Depreciation [Line Items]
Location	Coral Springs, FL
Initial Cost Land	$ 9,600
Initial Cost Buildings and Fixtures	40,004
Gross Amount, Land	9,600
Gross Amount, Buildings and Fixtures	53,366
Total	62,966
Accumulated Depreciation	(28,019)
Net	$ 34,947
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1996
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2004
Wholly Owned Properties - Residential | Preserve At Coral Square | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 13,362
Wholly Owned Properties - Residential | Paddock Club Gainesville
Real Estate And Accumulated Depreciation [Line Items]
Location	Gainesville, FL
Initial Cost Land	$ 1,800
Initial Cost Buildings and Fixtures	15,879
Gross Amount, Land	1,800
Gross Amount, Buildings and Fixtures	20,785
Total	22,585
Accumulated Depreciation	(11,415)
Net	$ 11,170
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1999
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 1998
Wholly Owned Properties - Residential | Paddock Club Gainesville | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 4,906
Wholly Owned Properties - Residential | Retreat At Magnolia Park
Real Estate And Accumulated Depreciation [Line Items]
Location	Gainesville, FL
Initial Cost Land	$ 2,040
Initial Cost Buildings and Fixtures	16,338
Gross Amount, Land	2,040
Gross Amount, Buildings and Fixtures	17,696
Total	19,736
Accumulated Depreciation	(5,871)
Net	$ 13,865
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2009
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2011
Wholly Owned Properties - Residential | Retreat At Magnolia Park | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 1,358
Wholly Owned Properties - Residential | Colonial Grand At Heathrow
Real Estate And Accumulated Depreciation [Line Items]
Location	Heathrow, FL
Initial Cost Land	$ 4,101
Initial Cost Buildings and Fixtures	35,684
Gross Amount, Land	4,101
Gross Amount, Buildings and Fixtures	40,159
Total	44,260
Accumulated Depreciation	(12,877)
Net	$ 31,383
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1997
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2013
Wholly Owned Properties - Residential | Colonial Grand At Heathrow | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 4,475
Wholly Owned Properties - Residential | A220 Riverside
Real Estate And Accumulated Depreciation [Line Items]
Location	Jacksonville, FL
Initial Cost Land	$ 2,381
Initial Cost Buildings and Fixtures	35,514
Gross Amount, Land	2,381
Gross Amount, Buildings and Fixtures	43,851
Total	46,232
Accumulated Depreciation	(5,915)
Net	$ 40,317
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2015
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2012
Wholly Owned Properties - Residential | A220 Riverside | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 8,337
Wholly Owned Properties - Residential | Atlantic Crossing
Real Estate And Accumulated Depreciation [Line Items]
Location	Jacksonville, FL
Initial Cost Land	$ 4,000
Initial Cost Buildings and Fixtures	19,495
Gross Amount, Land	4,000
Gross Amount, Buildings and Fixtures	21,863
Total	25,863
Accumulated Depreciation	(7,382)
Net	$ 18,481
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2008
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2011
Wholly Owned Properties - Residential | Atlantic Crossing | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 2,368
Wholly Owned Properties - Residential | Coopers Hawk
Real Estate And Accumulated Depreciation [Line Items]
Location	Jacksonville, FL
Initial Cost Land	$ 854
Initial Cost Buildings and Fixtures	7,500
Gross Amount, Land	854
Gross Amount, Buildings and Fixtures	11,242
Total	12,096
Accumulated Depreciation	(8,695)
Net	$ 3,401
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1987
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 1995
Wholly Owned Properties - Residential | Coopers Hawk | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 3,742
Wholly Owned Properties - Residential | Hunters Ridge At Deerwood
Real Estate And Accumulated Depreciation [Line Items]
Location	Jacksonville, FL
Initial Cost Land	$ 1,533
Initial Cost Buildings and Fixtures	13,835
Gross Amount, Land	1,533
Gross Amount, Buildings and Fixtures	19,084
Total	20,617
Accumulated Depreciation	(13,650)
Net	$ 6,967
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1987
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 1997
Wholly Owned Properties - Residential | Hunters Ridge At Deerwood | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 5,249
Wholly Owned Properties - Residential | Lakeside
Real Estate And Accumulated Depreciation [Line Items]
Location	Jacksonville, FL
Initial Cost Land	$ 1,430
Initial Cost Buildings and Fixtures	12,883
Gross Amount, Land	1,430
Gross Amount, Buildings and Fixtures	21,167
Total	22,597
Accumulated Depreciation	(15,608)
Net	$ 6,989
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1985
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 1996
Wholly Owned Properties - Residential | Lakeside | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 8,284
Wholly Owned Properties - Residential | Lighthouse At Fleming Island
Real Estate And Accumulated Depreciation [Line Items]
Location	Jacksonville, FL
Initial Cost Land	$ 4,047
Initial Cost Buildings and Fixtures	35,052
Gross Amount, Land	4,047
Gross Amount, Buildings and Fixtures	40,166
Total	44,213
Accumulated Depreciation	(23,102)
Net	$ 21,111
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2003
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2003
Wholly Owned Properties - Residential | Lighthouse At Fleming Island | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 5,114
Wholly Owned Properties - Residential | Paddock Club Mandarin
Real Estate And Accumulated Depreciation [Line Items]
Location	Jacksonville, FL
Initial Cost Land	$ 1,411
Initial Cost Buildings and Fixtures	14,967
Gross Amount, Land	1,411
Gross Amount, Buildings and Fixtures	18,255
Total	19,666
Accumulated Depreciation	(10,246)
Net	$ 9,420
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1998
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 1998
Wholly Owned Properties - Residential | Paddock Club Mandarin | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 3,288
Wholly Owned Properties - Residential | St Augustine
Real Estate And Accumulated Depreciation [Line Items]
Location	Jacksonville, FL
Initial Cost Land	$ 2,857
Initial Cost Buildings and Fixtures	6,475
Gross Amount, Land	2,857
Gross Amount, Buildings and Fixtures	25,050
Total	27,907
Accumulated Depreciation	(12,664)
Net	$ 15,243
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 1995
Wholly Owned Properties - Residential | St Augustine | Phase I [Member]
Real Estate And Accumulated Depreciation [Line Items]
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1987
Wholly Owned Properties - Residential | St Augustine | Phase II [Member]
Real Estate And Accumulated Depreciation [Line Items]
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2008
Wholly Owned Properties - Residential | St Augustine | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 18,575
Wholly Owned Properties - Residential | Tattersall At Tapestry Park
Real Estate And Accumulated Depreciation [Line Items]
Location	Jacksonville, FL
Initial Cost Land	$ 6,417
Initial Cost Buildings and Fixtures	36,069
Gross Amount, Land	6,417
Gross Amount, Buildings and Fixtures	38,026
Total	44,443
Accumulated Depreciation	(12,286)
Net	$ 32,157
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2009
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2011
Wholly Owned Properties - Residential | Tattersall At Tapestry Park | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 1,957
Wholly Owned Properties - Residential | Woodhollow
Real Estate And Accumulated Depreciation [Line Items]
Location	Jacksonville, FL
Initial Cost Land	$ 1,686
Initial Cost Buildings and Fixtures	15,179
Gross Amount, Land	1,678
Gross Amount, Buildings and Fixtures	24,397
Total	26,075
Accumulated Depreciation	(18,279)
Net	$ 7,796
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1986
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 1997
Wholly Owned Properties - Residential | Woodhollow | Land
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ (8)
Wholly Owned Properties - Residential | Woodhollow | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 9,218
Wholly Owned Properties - Residential | Colonial Grand at Lake Mary
Real Estate And Accumulated Depreciation [Line Items]
Location	Lake Mary, FL
Initial Cost Land	$ 6,346
Initial Cost Buildings and Fixtures	41,539
Gross Amount, Land	6,346
Gross Amount, Buildings and Fixtures	66,422
Total	72,768
Accumulated Depreciation	(16,359)
Net	$ 56,409
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2012
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2013
Wholly Owned Properties - Residential | Colonial Grand at Lake Mary | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 24,883
Wholly Owned Properties - Residential | Colonial Grand At Town Park
Real Estate And Accumulated Depreciation [Line Items]
Location	Lake Mary, FL
Initial Cost Land	$ 5,742
Initial Cost Buildings and Fixtures	56,562
Gross Amount, Land	5,742
Gross Amount, Buildings and Fixtures	62,866
Total	68,608
Accumulated Depreciation	(20,707)
Net	$ 47,901
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2005
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2013
Wholly Owned Properties - Residential | Colonial Grand At Town Park | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 6,304
Wholly Owned Properties - Residential | Colonial Grand At Town Park Reserve
Real Estate And Accumulated Depreciation [Line Items]
Location	Lake Mary, FL
Initial Cost Land	$ 3,481
Initial Cost Buildings and Fixtures	10,311
Gross Amount, Land	3,481
Gross Amount, Buildings and Fixtures	10,821
Total	14,302
Accumulated Depreciation	(3,642)
Net	$ 10,660
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2004
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2013
Wholly Owned Properties - Residential | Colonial Grand At Town Park Reserve | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 510
Wholly Owned Properties - Residential | Colonial Grand At Heather Glen
Real Estate And Accumulated Depreciation [Line Items]
Location	Orlando, FL
Initial Cost Land	$ 4,662
Initial Cost Buildings and Fixtures	56,988
Gross Amount, Land	4,662
Gross Amount, Buildings and Fixtures	64,353
Total	69,015
Accumulated Depreciation	(19,815)
Net	$ 49,200
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2000
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2013
Wholly Owned Properties - Residential | Colonial Grand At Heather Glen | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 7,365
Wholly Owned Properties - Residential | Colonial Grand At Randal Lakes
Real Estate And Accumulated Depreciation [Line Items]
Location	Orlando, FL
Initial Cost Land	$ 5,659
Initial Cost Buildings and Fixtures	50,553
Gross Amount, Land	5,659
Gross Amount, Buildings and Fixtures	61,977
Total	67,636
Accumulated Depreciation	(10,951)
Net	$ 56,685
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2013
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2013
Wholly Owned Properties - Residential | Colonial Grand At Randal Lakes | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 11,424
Wholly Owned Properties - Residential | Colonial Grand at Randal Lakes I I
Real Estate And Accumulated Depreciation [Line Items]
Location	Orlando, FL
Initial Cost Land	$ 3,200
Gross Amount, Land	3,200
Gross Amount, Buildings and Fixtures	36,931
Total	40,131
Accumulated Depreciation	(3,784)
Net	$ 36,347
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2017
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2013
Wholly Owned Properties - Residential | Colonial Grand at Randal Lakes I I | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 36,931
Wholly Owned Properties - Residential | Post Lake at Baldwin Park
Real Estate And Accumulated Depreciation [Line Items]
Location	Orlando, FL
Initial Cost Land	$ 18,101
Initial Cost Buildings and Fixtures	144,200
Gross Amount, Land	18,101
Gross Amount, Buildings and Fixtures	148,301
Total	166,402
Accumulated Depreciation	(24,572)
Net	$ 141,830
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2011
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2016
Wholly Owned Properties - Residential | Post Lake at Baldwin Park | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 4,101
Wholly Owned Properties - Residential | Post Lakeside
Real Estate And Accumulated Depreciation [Line Items]
Location	Orlando, FL
Initial Cost Land	$ 7,046
Initial Cost Buildings and Fixtures	52,585
Gross Amount, Land	7,046
Gross Amount, Buildings and Fixtures	53,523
Total	60,569
Accumulated Depreciation	(8,100)
Net	$ 52,469
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2013
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2016
Wholly Owned Properties - Residential | Post Lakeside | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 938
Wholly Owned Properties - Residential | Post Parkside Orlando
Real Estate And Accumulated Depreciation [Line Items]
Location	Orlando, FL
Initial Cost Land	$ 5,669
Initial Cost Buildings and Fixtures	49,754
Gross Amount, Land	5,669
Gross Amount, Buildings and Fixtures	55,053
Total	60,722
Accumulated Depreciation	(9,093)
Net	$ 51,629
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1999
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2016
Wholly Owned Properties - Residential | Post Parkside Orlando | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 5,299
Wholly Owned Properties - Residential | Retreat At Lake Nona
Real Estate And Accumulated Depreciation [Line Items]
Location	Orlando, FL
Initial Cost Land	$ 7,880
Initial Cost Buildings and Fixtures	41,175
Gross Amount, Land	7,880
Gross Amount, Buildings and Fixtures	47,441
Total	55,321
Accumulated Depreciation	(14,170)
Net	$ 41,151
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2006
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2012
Wholly Owned Properties - Residential | Retreat At Lake Nona | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 6,266
Wholly Owned Properties - Residential | Park Crest At Innisbrook
Real Estate And Accumulated Depreciation [Line Items]
Location	Palm Harbor, FL
Initial Cost Land	$ 6,900
Initial Cost Buildings and Fixtures	26,613
Gross Amount, Land	6,900
Gross Amount, Buildings and Fixtures	30,425
Total	37,325
Accumulated Depreciation	(12,866)
Net	$ 24,459
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2000
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2009
Wholly Owned Properties - Residential | Park Crest At Innisbrook | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 3,812
Wholly Owned Properties - Residential | Club At Panama Beach
Real Estate And Accumulated Depreciation [Line Items]
Location	Panama City, FL
Initial Cost Land	$ 898
Initial Cost Buildings and Fixtures	14,276
Gross Amount, Land	893
Gross Amount, Buildings and Fixtures	18,902
Total	19,795
Accumulated Depreciation	(11,057)
Net	$ 8,738
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2000
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 1998
Wholly Owned Properties - Residential | Club At Panama Beach | Land
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ (5)
Wholly Owned Properties - Residential | Club At Panama Beach | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 4,626
Wholly Owned Properties - Residential | Colonial Village At Twin Lakes
Real Estate And Accumulated Depreciation [Line Items]
Location	Sanford, FL
Initial Cost Land	$ 3,091
Initial Cost Buildings and Fixtures	47,793
Gross Amount, Land	3,091
Gross Amount, Buildings and Fixtures	50,855
Total	53,946
Accumulated Depreciation	(15,922)
Net	$ 38,024
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2005
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2013
Wholly Owned Properties - Residential | Colonial Village At Twin Lakes | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 3,062
Wholly Owned Properties - Residential | Paddock Club Tallahassee
Real Estate And Accumulated Depreciation [Line Items]
Location	Tallahassee, FL
Initial Cost Land	$ 530
Initial Cost Buildings and Fixtures	4,805
Gross Amount, Land	1,480
Gross Amount, Buildings and Fixtures	19,271
Total	20,751
Accumulated Depreciation	(13,992)
Net	$ 6,759
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1992
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 1997
Wholly Owned Properties - Residential | Paddock Club Tallahassee | Land
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 950
Wholly Owned Properties - Residential | Paddock Club Tallahassee | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 14,466
Wholly Owned Properties - Residential | Verandas at Southwood
Real Estate And Accumulated Depreciation [Line Items]
Location	Tallahassee, FL
Initial Cost Land	$ 3,600
Initial Cost Buildings and Fixtures	25,914
Gross Amount, Land	3,600
Gross Amount, Buildings and Fixtures	27,599
Total	31,199
Accumulated Depreciation	(6,423)
Net	$ 24,776
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2003
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2011
Wholly Owned Properties - Residential | Verandas at Southwood | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 1,685
Wholly Owned Properties - Residential | Belmere
Real Estate And Accumulated Depreciation [Line Items]
Location	Tampa, FL
Initial Cost Land	$ 852
Initial Cost Buildings and Fixtures	7,667
Gross Amount, Land	852
Gross Amount, Buildings and Fixtures	14,476
Total	15,328
Accumulated Depreciation	(10,529)
Net	$ 4,799
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1984
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 1994
Wholly Owned Properties - Residential | Belmere | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 6,809
Wholly Owned Properties - Residential | Colonial Grand At Hampton Preserve
Real Estate And Accumulated Depreciation [Line Items]
Location	Tampa, FL
Initial Cost Land	$ 6,233
Initial Cost Buildings and Fixtures	69,535
Gross Amount, Land	6,233
Gross Amount, Buildings and Fixtures	72,106
Total	78,339
Accumulated Depreciation	(20,819)
Net	$ 57,520
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2012
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2013
Wholly Owned Properties - Residential | Colonial Grand At Hampton Preserve | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 2,571
Wholly Owned Properties - Residential | Links At Carrollwood
Real Estate And Accumulated Depreciation [Line Items]
Location	Tampa, FL
Initial Cost Land	$ 817
Initial Cost Buildings and Fixtures	7,355
Gross Amount, Land	927
Gross Amount, Buildings and Fixtures	13,195
Total	14,122
Accumulated Depreciation	(9,206)
Net	$ 4,916
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1980
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 1998
Wholly Owned Properties - Residential | Links At Carrollwood | Land
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 110
Wholly Owned Properties - Residential | Links At Carrollwood | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 5,840
Wholly Owned Properties - Residential | Post Bay at Rocky Point
Real Estate And Accumulated Depreciation [Line Items]
Location	Tampa, FL
Initial Cost Land	$ 4,541
Initial Cost Buildings and Fixtures	28,381
Gross Amount, Land	4,541
Gross Amount, Buildings and Fixtures	30,370
Total	34,911
Accumulated Depreciation	(4,993)
Net	$ 29,918
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1997
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2016
Wholly Owned Properties - Residential | Post Bay at Rocky Point | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 1,989
Wholly Owned Properties - Residential | Post Harbour Place
Real Estate And Accumulated Depreciation [Line Items]
Location	Tampa, FL
Initial Cost Land	$ 16,296
Initial Cost Buildings and Fixtures	116,193
Gross Amount, Land	16,296
Gross Amount, Buildings and Fixtures	127,330
Total	143,626
Accumulated Depreciation	(21,840)
Net	$ 121,786
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1997
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2016
Wholly Owned Properties - Residential | Post Harbour Place | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 11,137
Wholly Owned Properties - Residential | Post Hyde Park
Real Estate And Accumulated Depreciation [Line Items]
Location	Tampa, FL
Initial Cost Land	$ 16,891
Initial Cost Buildings and Fixtures	95,259
Gross Amount, Land	16,891
Gross Amount, Buildings and Fixtures	102,289
Total	119,180
Accumulated Depreciation	(17,523)
Net	$ 101,657
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2016
Wholly Owned Properties - Residential | Post Hyde Park | Phase I [Member]
Real Estate And Accumulated Depreciation [Line Items]
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1994
Wholly Owned Properties - Residential | Post Hyde Park | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 7,030
Wholly Owned Properties - Residential | Post Rocky Point
Real Estate And Accumulated Depreciation [Line Items]
Location	Tampa, FL
Initial Cost Land	$ 35,260
Initial Cost Buildings and Fixtures	153,102
Gross Amount, Land	35,260
Gross Amount, Buildings and Fixtures	166,507
Total	201,767
Accumulated Depreciation	(27,806)
Net	$ 173,961
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2016
Wholly Owned Properties - Residential | Post Rocky Point | Phase I [Member]
Real Estate And Accumulated Depreciation [Line Items]
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1994
Wholly Owned Properties - Residential | Post Rocky Point | Phase II [Member]
Real Estate And Accumulated Depreciation [Line Items]
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1996
Wholly Owned Properties - Residential | Post Rocky Point | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 13,405
Wholly Owned Properties - Residential | Post Soho Square
Real Estate And Accumulated Depreciation [Line Items]
Location	Tampa, FL
Initial Cost Land	$ 5,190
Initial Cost Buildings and Fixtures	56,296
Gross Amount, Land	5,190
Gross Amount, Buildings and Fixtures	57,194
Total	62,384
Accumulated Depreciation	(8,535)
Net	$ 53,849
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2012
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2016
Wholly Owned Properties - Residential | Post Soho Square | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 898
Wholly Owned Properties - Residential | Village Oaks
Real Estate And Accumulated Depreciation [Line Items]
Location	Tampa, FL
Initial Cost Land	$ 2,738
Initial Cost Buildings and Fixtures	19,055
Gross Amount, Land	2,891
Gross Amount, Buildings and Fixtures	21,968
Total	24,859
Accumulated Depreciation	(9,218)
Net	$ 15,641
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2005
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2008
Wholly Owned Properties - Residential | Village Oaks | Land
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 153
Wholly Owned Properties - Residential | Village Oaks | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 2,913
Wholly Owned Properties - Residential | Colonial Grand At Seven Oaks [Member]
Real Estate And Accumulated Depreciation [Line Items]
Location	Wesley Chapel, FL
Initial Cost Land	$ 3,051
Initial Cost Buildings and Fixtures	42,768
Gross Amount, Land	3,051
Gross Amount, Buildings and Fixtures	46,017
Total	49,068
Accumulated Depreciation	(13,919)
Net	$ 35,149
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2004
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2013
Wholly Owned Properties - Residential | Colonial Grand At Seven Oaks [Member] | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 3,249
Wholly Owned Properties - Residential | Colonial Grand At Windermere [Member]
Real Estate And Accumulated Depreciation [Line Items]
Location	Windermere, FL
Initial Cost Land	$ 2,711
Initial Cost Buildings and Fixtures	36,710
Gross Amount, Land	2,711
Gross Amount, Buildings and Fixtures	38,480
Total	41,191
Accumulated Depreciation	(11,101)
Net	$ 30,090
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2009
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2013
Wholly Owned Properties - Residential | Colonial Grand At Windermere [Member] | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 1,770
Wholly Owned Properties - Residential | MAA Briarcliff
Real Estate And Accumulated Depreciation [Line Items]
Location	Atlanta, GA
Initial Cost Land	$ 24,645
Initial Cost Buildings and Fixtures	114,921
Gross Amount, Land	24,645
Gross Amount, Buildings and Fixtures	119,687
Total	144,332
Accumulated Depreciation	(19,281)
Net	$ 125,051
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1996
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2016
Wholly Owned Properties - Residential | MAA Briarcliff | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 4,766
Wholly Owned Properties - Residential | MAA Brookhaven
Real Estate And Accumulated Depreciation [Line Items]
Location	Atlanta, GA
Initial Cost Land	$ 29,048
Initial Cost Buildings and Fixtures	106,463
Gross Amount, Land	29,048
Gross Amount, Buildings and Fixtures	115,793
Total	144,841
Accumulated Depreciation	(20,071)
Net	$ 124,770
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2016
Wholly Owned Properties - Residential | MAA Brookhaven | Phase I [Member]
Real Estate And Accumulated Depreciation [Line Items]
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1989
Wholly Owned Properties - Residential | MAA Brookhaven | Phase II [Member]
Real Estate And Accumulated Depreciation [Line Items]
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1992
Wholly Owned Properties - Residential | MAA Brookhaven | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 9,330
Wholly Owned Properties - Residential | MAA Brookwood
Real Estate And Accumulated Depreciation [Line Items]
Location	Atlanta, GA
Initial Cost Land	$ 11,168
Initial Cost Buildings and Fixtures	52,758
Gross Amount, Land	11,168
Gross Amount, Buildings and Fixtures	58,538
Total	69,706
Accumulated Depreciation	(17,638)
Net	$ 52,068
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2008
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2012
Wholly Owned Properties - Residential | MAA Brookwood | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 5,780
Wholly Owned Properties - Residential | M A A Buckhead
Real Estate And Accumulated Depreciation [Line Items]
Location	Atlanta, GA
Initial Cost Land	$ 8,633
Initial Cost Buildings and Fixtures	19,844
Gross Amount, Land	8,633
Gross Amount, Buildings and Fixtures	29,778
Total	38,411
Accumulated Depreciation	(9,589)
Net	$ 28,822
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2002
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2012
Wholly Owned Properties - Residential | M A A Buckhead | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 9,934
Wholly Owned Properties - Residential | MAA Centennial Park
Real Estate And Accumulated Depreciation [Line Items]
Location	Atlanta, GA
Initial Cost Land	$ 13,650
Initial Cost Buildings and Fixtures	10,950
Gross Amount, Land	13,650
Gross Amount, Buildings and Fixtures	72,792
Total	86,442
Accumulated Depreciation	(5,984)
Net	$ 80,458
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2018
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2016
Wholly Owned Properties - Residential | MAA Centennial Park | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 61,842
Wholly Owned Properties - Residential | MAA Chastain
Real Estate And Accumulated Depreciation [Line Items]
Location	Atlanta, GA
Initial Cost Land	$ 30,223
Initial Cost Buildings and Fixtures	82,964
Gross Amount, Land	30,223
Gross Amount, Buildings and Fixtures	86,290
Total	116,513
Accumulated Depreciation	(13,710)
Net	$ 102,803
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1990
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2016
Wholly Owned Properties - Residential | MAA Chastain | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 3,326
Wholly Owned Properties - Residential | MAA Dunwoody
Real Estate And Accumulated Depreciation [Line Items]
Location	Atlanta, GA
Initial Cost Land	$ 15,799
Initial Cost Buildings and Fixtures	48,054
Gross Amount, Land	15,799
Gross Amount, Buildings and Fixtures	52,029
Total	67,828
Accumulated Depreciation	(8,616)
Net	$ 59,212
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1995
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2016
Wholly Owned Properties - Residential | MAA Dunwoody | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 3,975
Wholly Owned Properties - Residential | MAA Gardens
Real Estate And Accumulated Depreciation [Line Items]
Location	Atlanta, GA
Initial Cost Land	$ 17,907
Initial Cost Buildings and Fixtures	56,093
Gross Amount, Land	17,907
Gross Amount, Buildings and Fixtures	60,560
Total	78,467
Accumulated Depreciation	(10,531)
Net	$ 67,936
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1996
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2016
Wholly Owned Properties - Residential | MAA Gardens | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 4,467
Wholly Owned Properties - Residential | MAA Glen
Real Estate And Accumulated Depreciation [Line Items]
Location	Atlanta, GA
Initial Cost Land	$ 13,878
Initial Cost Buildings and Fixtures	51,079
Gross Amount, Land	13,878
Gross Amount, Buildings and Fixtures	56,370
Total	70,248
Accumulated Depreciation	(9,299)
Net	$ 60,949
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1996
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2016
Wholly Owned Properties - Residential | MAA Glen | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 5,291
Wholly Owned Properties - Residential | MAA Lenox
Real Estate And Accumulated Depreciation [Line Items]
Location	Atlanta, GA
Initial Cost Land	$ 15,440
Initial Cost Buildings and Fixtures	73,278
Gross Amount, Land	15,440
Gross Amount, Buildings and Fixtures	77,055
Total	92,495
Accumulated Depreciation	(10,120)
Net	$ 82,375
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2006
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2016
Wholly Owned Properties - Residential | MAA Lenox | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 3,777
Wholly Owned Properties - Residential | MAA Lenox II
Real Estate And Accumulated Depreciation [Line Items]
Location	Atlanta, GA
Initial Cost Land	$ 8,435
Initial Cost Buildings and Fixtures	92,294
Gross Amount, Land	8,435
Gross Amount, Buildings and Fixtures	92,919
Total	101,354
Accumulated Depreciation	(20,112)
Net	$ 81,242
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2015
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2016
Wholly Owned Properties - Residential | MAA Lenox II | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 625
Wholly Owned Properties - Residential | MAA Midtown
Real Estate And Accumulated Depreciation [Line Items]
Location	Atlanta, GA
Initial Cost Land	$ 7,000
Initial Cost Buildings and Fixtures	44,000
Gross Amount, Land	7,000
Gross Amount, Buildings and Fixtures	85,102
Total	92,102
Accumulated Depreciation	(7,958)
Net	$ 84,144
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2017
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2016
Wholly Owned Properties - Residential | MAA Midtown | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 41,102
Wholly Owned Properties - Residential | MAA Oglethorpe
Real Estate And Accumulated Depreciation [Line Items]
Location	Atlanta, GA
Initial Cost Land	$ 6,875
Initial Cost Buildings and Fixtures	31,441
Gross Amount, Land	6,856
Gross Amount, Buildings and Fixtures	39,321
Total	46,177
Accumulated Depreciation	(15,280)
Net	$ 30,897
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1994
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2008
Wholly Owned Properties - Residential | MAA Oglethorpe | Land
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ (19)
Wholly Owned Properties - Residential | MAA Oglethorpe | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 7,880
Wholly Owned Properties - Residential | MAA Peachtree Hills
Real Estate And Accumulated Depreciation [Line Items]
Location	Atlanta, GA
Initial Cost Land	$ 11,974
Initial Cost Buildings and Fixtures	55,264
Gross Amount, Land	11,974
Gross Amount, Buildings and Fixtures	56,522
Total	68,496
Accumulated Depreciation	(8,689)
Net	$ 59,807
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2016
Wholly Owned Properties - Residential | MAA Peachtree Hills | Phase I [Member]
Real Estate And Accumulated Depreciation [Line Items]
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1992
Wholly Owned Properties - Residential | MAA Peachtree Hills | Phase II [Member]
Real Estate And Accumulated Depreciation [Line Items]
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1994
Wholly Owned Properties - Residential | MAA Peachtree Hills | Phase III [Member]
Real Estate And Accumulated Depreciation [Line Items]
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2009
Wholly Owned Properties - Residential | MAA Peachtree Hills | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 1,258
Wholly Owned Properties - Residential | MAA Piedmont Park
Real Estate And Accumulated Depreciation [Line Items]
Location	Atlanta, GA
Initial Cost Land	$ 11,025
Initial Cost Buildings and Fixtures	34,277
Gross Amount, Land	11,025
Gross Amount, Buildings and Fixtures	36,565
Total	47,590
Accumulated Depreciation	(5,599)
Net	$ 41,991
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1999
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2016
Wholly Owned Properties - Residential | MAA Piedmont Park | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 2,288
Wholly Owned Properties - Residential | MAA Riverside
Real Estate And Accumulated Depreciation [Line Items]
Location	Atlanta, GA
Initial Cost Land	$ 23,765
Initial Cost Buildings and Fixtures	89,369
Gross Amount, Land	23,765
Gross Amount, Buildings and Fixtures	98,115
Total	121,880
Accumulated Depreciation	(17,720)
Net	$ 104,160
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1996
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2016
Wholly Owned Properties - Residential | MAA Riverside | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 8,746
Wholly Owned Properties - Residential | MAA Spring
Real Estate And Accumulated Depreciation [Line Items]
Location	Atlanta, GA
Initial Cost Land	$ 18,596
Initial Cost Buildings and Fixtures	57,819
Gross Amount, Land	18,596
Gross Amount, Buildings and Fixtures	63,542
Total	82,138
Accumulated Depreciation	(11,169)
Net	$ 70,969
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1999
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2016
Wholly Owned Properties - Residential | MAA Spring | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 5,723
Wholly Owned Properties - Residential | MAA Stratford
Real Estate And Accumulated Depreciation [Line Items]
Location	Atlanta, GA
Initial Cost Buildings and Fixtures	$ 30,051
Gross Amount, Buildings and Fixtures	35,273
Total	35,273
Accumulated Depreciation	(5,938)
Net	$ 29,335
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1999
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2016
Wholly Owned Properties - Residential | MAA Stratford | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 5,222
Wholly Owned Properties - Residential | MAA Berkeley Lake
Real Estate And Accumulated Depreciation [Line Items]
Location	Duluth, GA
Initial Cost Land	$ 1,960
Initial Cost Buildings and Fixtures	15,707
Gross Amount, Land	1,960
Gross Amount, Buildings and Fixtures	18,421
Total	20,381
Accumulated Depreciation	(6,854)
Net	$ 13,527
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1998
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2013
Wholly Owned Properties - Residential | MAA Berkeley Lake | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 2,714
Wholly Owned Properties - Residential | MAA McDaniel Farm
Real Estate And Accumulated Depreciation [Line Items]
Location	Duluth, GA
Initial Cost Land	$ 3,985
Initial Cost Buildings and Fixtures	32,206
Gross Amount, Land	3,985
Gross Amount, Buildings and Fixtures	37,421
Total	41,406
Accumulated Depreciation	(13,550)
Net	$ 27,856
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1997
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2013
Wholly Owned Properties - Residential | MAA McDaniel Farm | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 5,215
Wholly Owned Properties - Residential | MAA Pleasant Hill
Real Estate And Accumulated Depreciation [Line Items]
Location	Duluth, GA
Initial Cost Land	$ 6,753
Initial Cost Buildings and Fixtures	32,202
Gross Amount, Land	6,753
Gross Amount, Buildings and Fixtures	38,778
Total	45,531
Accumulated Depreciation	(13,125)
Net	$ 32,406
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1996
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2013
Wholly Owned Properties - Residential | MAA Pleasant Hill | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 6,576
Wholly Owned Properties - Residential | MAA Prescott
Real Estate And Accumulated Depreciation [Line Items]
Location	Duluth, GA
Initial Cost Land	$ 3,840
Initial Cost Buildings and Fixtures	24,011
Gross Amount, Land	3,840
Gross Amount, Buildings and Fixtures	29,093
Total	32,933
Accumulated Depreciation	(15,852)
Net	$ 17,081
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2001
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2004
Wholly Owned Properties - Residential | MAA Prescott | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 5,082
Wholly Owned Properties - Residential | MAA River Oaks
Real Estate And Accumulated Depreciation [Line Items]
Location	Duluth, GA
Initial Cost Land	$ 4,360
Initial Cost Buildings and Fixtures	13,579
Gross Amount, Land	4,349
Gross Amount, Buildings and Fixtures	16,828
Total	21,177
Accumulated Depreciation	(7,345)
Net	$ 13,832
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1992
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2013
Wholly Owned Properties - Residential | MAA River Oaks | Land
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ (11)
Wholly Owned Properties - Residential | MAA River Oaks | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 3,249
Wholly Owned Properties - Residential | MAA River Place
Real Estate And Accumulated Depreciation [Line Items]
Location	Duluth, GA
Initial Cost Land	$ 2,059
Initial Cost Buildings and Fixtures	19,158
Gross Amount, Land	2,059
Gross Amount, Buildings and Fixtures	22,721
Total	24,780
Accumulated Depreciation	(8,010)
Net	$ 16,770
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1994
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2013
Wholly Owned Properties - Residential | MAA River Place | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 3,563
Wholly Owned Properties - Residential | MAA Mount Vernon
Real Estate And Accumulated Depreciation [Line Items]
Location	Dunwoody, GA
Initial Cost Land	$ 6,861
Initial Cost Buildings and Fixtures	23,748
Gross Amount, Land	6,861
Gross Amount, Buildings and Fixtures	27,872
Total	34,733
Accumulated Depreciation	(8,736)
Net	$ 25,997
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1997
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2013
Wholly Owned Properties - Residential | MAA Mount Vernon | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 4,124
Wholly Owned Properties - Residential | MAA Lake Lanier
Real Estate And Accumulated Depreciation [Line Items]
Location	Gainesville, GA
Initial Cost Land	$ 6,710
Initial Cost Buildings and Fixtures	40,994
Gross Amount, Land	6,710
Gross Amount, Buildings and Fixtures	50,570
Total	57,280
Accumulated Depreciation	(27,073)
Net	$ 30,207
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2005
Wholly Owned Properties - Residential | MAA Lake Lanier | Phase I [Member]
Real Estate And Accumulated Depreciation [Line Items]
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1998
Wholly Owned Properties - Residential | MAA Lake Lanier | Phase II [Member]
Real Estate And Accumulated Depreciation [Line Items]
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2001
Wholly Owned Properties - Residential | MAA Lake Lanier | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 9,576
Wholly Owned Properties - Residential | MAA Shiloh
Real Estate And Accumulated Depreciation [Line Items]
Location	Kennesaw, GA
Initial Cost Land	$ 4,864
Initial Cost Buildings and Fixtures	45,893
Gross Amount, Land	4,864
Gross Amount, Buildings and Fixtures	51,982
Total	56,846
Accumulated Depreciation	(17,065)
Net	$ 39,781
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2002
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2013
Wholly Owned Properties - Residential | MAA Shiloh | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 6,089
Wholly Owned Properties - Residential | MAA Milstead
Real Estate And Accumulated Depreciation [Line Items]
Location	LaGrange, GA
Initial Cost Land	$ 3,100
Initial Cost Buildings and Fixtures	29,240
Gross Amount, Land	3,100
Gross Amount, Buildings and Fixtures	32,139
Total	35,239
Accumulated Depreciation	(9,082)
Net	$ 26,157
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1998
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2008
Wholly Owned Properties - Residential | MAA Milstead | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 2,899
Wholly Owned Properties - Residential | MAA Barrett Creek
Real Estate And Accumulated Depreciation [Line Items]
Location	Marietta, GA
Initial Cost Land	$ 5,661
Initial Cost Buildings and Fixtures	26,186
Gross Amount, Land	5,661
Gross Amount, Buildings and Fixtures	29,750
Total	35,411
Accumulated Depreciation	(11,162)
Net	$ 24,249
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1999
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2013
Wholly Owned Properties - Residential | MAA Barrett Creek | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 3,564
Wholly Owned Properties - Residential | Colonial Grand at Godley Lake
Real Estate And Accumulated Depreciation [Line Items]
Location	Pooler, GA
Initial Cost Land	$ 1,750
Initial Cost Buildings and Fixtures	30,893
Gross Amount, Land	1,750
Gross Amount, Buildings and Fixtures	32,914
Total	34,664
Accumulated Depreciation	(10,184)
Net	$ 24,480
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2008
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2013
Wholly Owned Properties - Residential | Colonial Grand at Godley Lake | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 2,021
Wholly Owned Properties - Residential | Colonial Grand at Godley Station [Member]
Real Estate And Accumulated Depreciation [Line Items]
Location	Pooler, GA
Encumbrances	$ 6,588
Initial Cost Land	1,800
Initial Cost Buildings and Fixtures	35,454
Gross Amount, Land	1,800
Gross Amount, Buildings and Fixtures	39,626
Total	41,426
Accumulated Depreciation	(12,117)
Net	$ 29,309
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2001
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2013
Wholly Owned Properties - Residential | Colonial Grand at Godley Station [Member] | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 4,172
Wholly Owned Properties - Residential | Avala at Savannah Quarters [Member]
Real Estate And Accumulated Depreciation [Line Items]
Location	Savannah, GA
Initial Cost Land	$ 1,500
Initial Cost Buildings and Fixtures	24,862
Gross Amount, Land	1,500
Gross Amount, Buildings and Fixtures	27,185
Total	28,685
Accumulated Depreciation	(8,982)
Net	$ 19,703
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2009
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2011
Wholly Owned Properties - Residential | Avala at Savannah Quarters [Member] | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 2,323
Wholly Owned Properties - Residential | Colonial Grand at Hammocks [Member]
Real Estate And Accumulated Depreciation [Line Items]
Location	Savannah, GA
Initial Cost Land	$ 2,441
Initial Cost Buildings and Fixtures	36,863
Gross Amount, Land	2,441
Gross Amount, Buildings and Fixtures	42,315
Total	44,756
Accumulated Depreciation	(13,065)
Net	$ 31,691
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1997
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2013
Wholly Owned Properties - Residential | Colonial Grand at Hammocks [Member] | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 5,452
Wholly Owned Properties - Residential | Colonial Village at Greentree [Member]
Real Estate And Accumulated Depreciation [Line Items]
Location	Savannah, GA
Initial Cost Land	$ 1,710
Initial Cost Buildings and Fixtures	10,494
Gross Amount, Land	1,710
Gross Amount, Buildings and Fixtures	12,857
Total	14,567
Accumulated Depreciation	(4,769)
Net	$ 9,798
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1984
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2013
Wholly Owned Properties - Residential | Colonial Village at Greentree [Member] | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 2,363
Wholly Owned Properties - Residential | Colonial Village at Huntington [Member]
Real Estate And Accumulated Depreciation [Line Items]
Location	Savannah, GA
Initial Cost Land	$ 2,521
Initial Cost Buildings and Fixtures	8,223
Gross Amount, Land	2,521
Gross Amount, Buildings and Fixtures	10,136
Total	12,657
Accumulated Depreciation	(3,378)
Net	$ 9,279
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1986
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2013
Wholly Owned Properties - Residential | Colonial Village at Huntington [Member] | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 1,913
Wholly Owned Properties - Residential | Colonial Village at Marsh Cove [Member]
Real Estate And Accumulated Depreciation [Line Items]
Location	Savannah, GA
Initial Cost Land	$ 5,231
Initial Cost Buildings and Fixtures	8,555
Gross Amount, Land	5,231
Gross Amount, Buildings and Fixtures	10,650
Total	15,881
Accumulated Depreciation	(4,016)
Net	$ 11,865
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1983
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2013
Wholly Owned Properties - Residential | Colonial Village at Marsh Cove [Member] | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 2,095
Wholly Owned Properties - Residential | Georgetown Grove [Member]
Real Estate And Accumulated Depreciation [Line Items]
Location	Savannah, GA
Initial Cost Land	$ 1,288
Initial Cost Buildings and Fixtures	11,579
Gross Amount, Land	1,288
Gross Amount, Buildings and Fixtures	15,176
Total	16,464
Accumulated Depreciation	(10,950)
Net	$ 5,514
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1997
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 1998
Wholly Owned Properties - Residential | Georgetown Grove [Member] | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 3,597
Wholly Owned Properties - Residential | Oaks at Wilmington Island [Member]
Real Estate And Accumulated Depreciation [Line Items]
Location	Savannah, GA
Initial Cost Land	$ 2,910
Initial Cost Buildings and Fixtures	25,315
Gross Amount, Land	2,864
Gross Amount, Buildings and Fixtures	30,587
Total	33,451
Accumulated Depreciation	(14,649)
Net	$ 18,802
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1999
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2006
Wholly Owned Properties - Residential | Oaks at Wilmington Island [Member] | Land
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ (46)
Wholly Owned Properties - Residential | Oaks at Wilmington Island [Member] | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 5,272
Wholly Owned Properties - Residential | MAA West Village [Member]
Real Estate And Accumulated Depreciation [Line Items]
Location	Smyrna, GA
Initial Cost Land	$ 14,410
Initial Cost Buildings and Fixtures	73,733
Gross Amount, Land	14,410
Gross Amount, Buildings and Fixtures	83,063
Total	97,473
Accumulated Depreciation	(18,741)
Net	$ 78,732
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2014
Wholly Owned Properties - Residential | MAA West Village [Member] | Phase I [Member]
Real Estate And Accumulated Depreciation [Line Items]
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2006
Wholly Owned Properties - Residential | MAA West Village [Member] | Phase II [Member]
Real Estate And Accumulated Depreciation [Line Items]
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2012
Wholly Owned Properties - Residential | MAA West Village [Member] | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 9,330
Wholly Owned Properties - Residential | Ranch at Prairie Trace [Member]
Real Estate And Accumulated Depreciation [Line Items]
Location	Overland Park, KS
Initial Cost Land	$ 3,500
Initial Cost Buildings and Fixtures	40,614
Gross Amount, Land	3,500
Gross Amount, Buildings and Fixtures	42,662
Total	46,162
Accumulated Depreciation	(6,292)
Net	$ 39,870
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2015
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2015
Wholly Owned Properties - Residential | Ranch at Prairie Trace [Member] | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 2,048
Wholly Owned Properties - Residential | Grand Reserve at Pinnacle [Member]
Real Estate And Accumulated Depreciation [Line Items]
Location	Lexington, KY
Initial Cost Land	$ 2,024
Initial Cost Buildings and Fixtures	31,525
Gross Amount, Land	2,024
Gross Amount, Buildings and Fixtures	38,245
Total	40,269
Accumulated Depreciation	(20,846)
Net	$ 19,423
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2000
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 1998
Wholly Owned Properties - Residential | Grand Reserve at Pinnacle [Member] | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 6,720
Wholly Owned Properties - Residential | Lakepointe [Member]
Real Estate And Accumulated Depreciation [Line Items]
Location	Lexington, KY
Initial Cost Land	$ 411
Initial Cost Buildings and Fixtures	3,699
Gross Amount, Land	411
Gross Amount, Buildings and Fixtures	6,431
Total	6,842
Accumulated Depreciation	(4,903)
Net	$ 1,939
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1986
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 1994
Wholly Owned Properties - Residential | Lakepointe [Member] | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 2,732
Wholly Owned Properties - Residential | The Mansion [Member]
Real Estate And Accumulated Depreciation [Line Items]
Location	Lexington, KY
Initial Cost Land	$ 694
Initial Cost Buildings and Fixtures	6,242
Gross Amount, Land	694
Gross Amount, Buildings and Fixtures	10,275
Total	10,969
Accumulated Depreciation	(7,831)
Net	$ 3,138
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1989
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 1994
Wholly Owned Properties - Residential | The Mansion [Member] | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 4,033
Wholly Owned Properties - Residential | The Village [Member]
Real Estate And Accumulated Depreciation [Line Items]
Location	Lexington, KY
Initial Cost Land	$ 900
Initial Cost Buildings and Fixtures	8,097
Gross Amount, Land	900
Gross Amount, Buildings and Fixtures	13,091
Total	13,991
Accumulated Depreciation	(10,026)
Net	$ 3,965
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1989
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 1994
Wholly Owned Properties - Residential | The Village [Member] | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 4,994
Wholly Owned Properties - Residential | Stonemill Village [Member]
Real Estate And Accumulated Depreciation [Line Items]
Location	Louisville, KY
Initial Cost Land	$ 1,169
Initial Cost Buildings and Fixtures	10,518
Gross Amount, Land	1,169
Gross Amount, Buildings and Fixtures	20,407
Total	21,576
Accumulated Depreciation	(15,351)
Net	$ 6,225
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1985
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 1994
Wholly Owned Properties - Residential | Stonemill Village [Member] | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 9,889
Wholly Owned Properties - Residential | Market Station
Real Estate And Accumulated Depreciation [Line Items]
Location	Kansas City, MO
Initial Cost Land	$ 5,814
Initial Cost Buildings and Fixtures	46,241
Gross Amount, Land	5,814
Gross Amount, Buildings and Fixtures	49,737
Total	55,551
Accumulated Depreciation	(14,079)
Net	$ 41,472
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2010
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2012
Wholly Owned Properties - Residential | Market Station | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 3,496
Wholly Owned Properties - Residential | The Denton [Member]
Real Estate And Accumulated Depreciation [Line Items]
Location	Kansas City, MO
Initial Cost Land	$ 750
Initial Cost Buildings and Fixtures	8,795
Gross Amount, Land	750
Gross Amount, Buildings and Fixtures	9,764
Total	10,514
Accumulated Depreciation	(1,331)
Net	$ 9,183
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2014
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2015
Wholly Owned Properties - Residential | The Denton [Member] | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 969
Wholly Owned Properties - Residential | The Denton II [Member]
Real Estate And Accumulated Depreciation [Line Items]
Location	Kansas City, MO
Initial Cost Land	$ 770
Gross Amount, Land	770
Gross Amount, Buildings and Fixtures	24,644
Total	25,414
Accumulated Depreciation	(1,915)
Net	$ 23,499
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2017
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2015
Wholly Owned Properties - Residential | The Denton II [Member] | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 24,644
Wholly Owned Properties - Residential | The Denton III
Real Estate And Accumulated Depreciation [Line Items]
Location	Kansas City, MO
Initial Cost Land	$ 4,000
Initial Cost Buildings and Fixtures	42,144
Gross Amount, Land	4,000
Gross Amount, Buildings and Fixtures	45,012
Total	49,012
Accumulated Depreciation	(7,062)
Net	$ 41,950
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2015
Wholly Owned Properties - Residential | The Denton III | Phase I [Member]
Real Estate And Accumulated Depreciation [Line Items]
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2013
Wholly Owned Properties - Residential | The Denton III | Phase II [Member]
Real Estate And Accumulated Depreciation [Line Items]
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2014
Wholly Owned Properties - Residential | The Denton III | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 2,868
Wholly Owned Properties - Residential | Crosswinds [Member]
Real Estate And Accumulated Depreciation [Line Items]
Location	Jackson, MS
Initial Cost Land	$ 1,535
Initial Cost Buildings and Fixtures	13,826
Gross Amount, Land	1,535
Gross Amount, Buildings and Fixtures	20,696
Total	22,231
Accumulated Depreciation	(15,016)
Net	$ 7,215
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1989
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 1996
Wholly Owned Properties - Residential | Crosswinds [Member] | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 6,870
Wholly Owned Properties - Residential | Pear Orchard [Member]
Real Estate And Accumulated Depreciation [Line Items]
Location	Jackson, MS
Initial Cost Land	$ 1,351
Initial Cost Buildings and Fixtures	12,168
Gross Amount, Land	1,351
Gross Amount, Buildings and Fixtures	19,976
Total	21,327
Accumulated Depreciation	(15,389)
Net	$ 5,938
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1985
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 1994
Wholly Owned Properties - Residential | Pear Orchard [Member] | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 7,808
Wholly Owned Properties - Residential | Reflection Pointe [Member]
Real Estate And Accumulated Depreciation [Line Items]
Location	Jackson, MS
Initial Cost Land	$ 710
Initial Cost Buildings and Fixtures	8,770
Gross Amount, Land	848
Gross Amount, Buildings and Fixtures	17,317
Total	18,165
Accumulated Depreciation	(12,990)
Net	$ 5,175
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1986
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 1988
Wholly Owned Properties - Residential | Reflection Pointe [Member] | Land
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 138
Wholly Owned Properties - Residential | Reflection Pointe [Member] | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 8,547
Wholly Owned Properties - Residential | Lakeshore Landing [Member]
Real Estate And Accumulated Depreciation [Line Items]
Location	Ridgeland, MS
Initial Cost Land	$ 676
Initial Cost Buildings and Fixtures	6,284
Gross Amount, Land	676
Gross Amount, Buildings and Fixtures	10,541
Total	11,217
Accumulated Depreciation	(5,812)
Net	$ 5,405
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1974
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 1994
Wholly Owned Properties - Residential | Lakeshore Landing [Member] | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 4,257
Wholly Owned Properties - Residential | Colonial Village at beaver creek [Member]
Real Estate And Accumulated Depreciation [Line Items]
Location	Apex, NC
Initial Cost Land	$ 7,491
Initial Cost Buildings and Fixtures	34,863
Gross Amount, Land	7,491
Gross Amount, Buildings and Fixtures	37,792
Total	45,283
Accumulated Depreciation	(11,386)
Net	$ 33,897
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2007
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2013
Wholly Owned Properties - Residential | Colonial Village at beaver creek [Member] | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 2,929
Wholly Owned Properties - Residential | Hermitage at Beechtree [Member]
Real Estate And Accumulated Depreciation [Line Items]
Location	Cary, NC
Initial Cost Land	$ 900
Initial Cost Buildings and Fixtures	8,099
Gross Amount, Land	900
Gross Amount, Buildings and Fixtures	13,541
Total	14,441
Accumulated Depreciation	(9,487)
Net	$ 4,954
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1988
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 1997
Wholly Owned Properties - Residential | Hermitage at Beechtree [Member] | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 5,442
Wholly Owned Properties - Residential | Waterford Forest [Member]
Real Estate And Accumulated Depreciation [Line Items]
Location	Cary, NC
Initial Cost Land	$ 4,000
Initial Cost Buildings and Fixtures	20,250
Gross Amount, Land	4,000
Gross Amount, Buildings and Fixtures	25,143
Total	29,143
Accumulated Depreciation	(12,793)
Net	$ 16,350
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1996
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2005
Wholly Owned Properties - Residential | Waterford Forest [Member] | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 4,893
Wholly Owned Properties - Residential | MAA 1225
Real Estate And Accumulated Depreciation [Line Items]
Location	Charlotte, NC
Initial Cost Land	$ 9,612
Initial Cost Buildings and Fixtures	22,342
Gross Amount, Land	9,612
Gross Amount, Buildings and Fixtures	52,001
Total	61,613
Accumulated Depreciation	(12,555)
Net	$ 49,058
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2010
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2010
Wholly Owned Properties - Residential | MAA 1225 | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 29,659
Wholly Owned Properties - Residential | MAA Ayrsley
Real Estate And Accumulated Depreciation [Line Items]
Location	Charlotte, NC
Initial Cost Land	$ 2,481
Initial Cost Buildings and Fixtures	52,119
Gross Amount, Land	2,481
Gross Amount, Buildings and Fixtures	67,895
Total	70,376
Accumulated Depreciation	(18,765)
Net	$ 51,611
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2008
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2013
Wholly Owned Properties - Residential | MAA Ayrsley | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 15,776
Wholly Owned Properties - Residential | MAA Ballantyne
Real Estate And Accumulated Depreciation [Line Items]
Location	Charlotte, NC
Initial Cost Land	$ 16,216
Initial Cost Buildings and Fixtures	44,817
Gross Amount, Land	16,216
Gross Amount, Buildings and Fixtures	48,190
Total	64,406
Accumulated Depreciation	(7,866)
Net	$ 56,540
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2004
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2016
Wholly Owned Properties - Residential | MAA Ballantyne | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 3,373
Wholly Owned Properties - Residential | MAA Beverly Crest
Real Estate And Accumulated Depreciation [Line Items]
Location	Charlotte, NC
Initial Cost Land	$ 3,161
Initial Cost Buildings and Fixtures	24,004
Gross Amount, Land	3,161
Gross Amount, Buildings and Fixtures	27,995
Total	31,156
Accumulated Depreciation	(8,526)
Net	$ 22,630
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1996
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2013
Wholly Owned Properties - Residential | MAA Beverly Crest | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 3,991
Wholly Owned Properties - Residential | MAA Chancellor Park
Real Estate And Accumulated Depreciation [Line Items]
Location	Charlotte, NC
Initial Cost Land	$ 5,311
Initial Cost Buildings and Fixtures	28,016
Gross Amount, Land	5,311
Gross Amount, Buildings and Fixtures	33,211
Total	38,522
Accumulated Depreciation	(10,515)
Net	$ 28,007
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1999
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2013
Wholly Owned Properties - Residential | MAA Chancellor Park | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 5,195
Wholly Owned Properties - Residential | MAA City Grand
Real Estate And Accumulated Depreciation [Line Items]
Location	Charlotte, NC
Initial Cost Land	$ 1,620
Initial Cost Buildings and Fixtures	17,499
Gross Amount, Land	1,620
Gross Amount, Buildings and Fixtures	18,732
Total	20,352
Accumulated Depreciation	(5,494)
Net	$ 14,858
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2005
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2013
Wholly Owned Properties - Residential | MAA City Grand | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 1,233
Wholly Owned Properties - Residential | MAA Enclave
Real Estate And Accumulated Depreciation [Line Items]
Location	Charlotte, NC
Initial Cost Land	$ 1,461
Initial Cost Buildings and Fixtures	18,984
Gross Amount, Land	1,461
Gross Amount, Buildings and Fixtures	20,865
Total	22,326
Accumulated Depreciation	(5,651)
Net	$ 16,675
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2008
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2013
Wholly Owned Properties - Residential | MAA Enclave | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 1,881
Wholly Owned Properties - Residential | MAA Gateway
Real Estate And Accumulated Depreciation [Line Items]
Location	Charlotte, NC
Initial Cost Land	$ 17,528
Initial Cost Buildings and Fixtures	57,444
Gross Amount, Land	17,528
Gross Amount, Buildings and Fixtures	63,633
Total	81,161
Accumulated Depreciation	(11,000)
Net	$ 70,161
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2000
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2016
Wholly Owned Properties - Residential | MAA Gateway | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 6,189
Wholly Owned Properties - Residential | MAA Legacy Park
Real Estate And Accumulated Depreciation [Line Items]
Location	Charlotte, NC
Initial Cost Land	$ 2,891
Initial Cost Buildings and Fixtures	28,272
Gross Amount, Land	2,891
Gross Amount, Buildings and Fixtures	31,872
Total	34,763
Accumulated Depreciation	(9,899)
Net	$ 24,864
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2001
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2013
Wholly Owned Properties - Residential | MAA Legacy Park | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 3,600
Wholly Owned Properties - Residential | MAA Prosperity Creek
Real Estate And Accumulated Depreciation [Line Items]
Location	Charlotte, NC
Initial Cost Land	$ 4,591
Initial Cost Buildings and Fixtures	27,713
Gross Amount, Land	4,591
Gross Amount, Buildings and Fixtures	30,329
Total	34,920
Accumulated Depreciation	(9,662)
Net	$ 25,258
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2005
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2013
Wholly Owned Properties - Residential | MAA Prosperity Creek | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 2,616
Wholly Owned Properties - Residential | MAA Reserve
Real Estate And Accumulated Depreciation [Line Items]
Location	Charlotte, NC
Initial Cost Land	$ 4,628
Initial Cost Buildings and Fixtures	44,282
Gross Amount, Land	4,628
Gross Amount, Buildings and Fixtures	57,732
Total	62,360
Accumulated Depreciation	(9,812)
Net	$ 52,548
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2013
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2013
Wholly Owned Properties - Residential | MAA Reserve | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 13,450
Wholly Owned Properties - Residential | MAA South Line
Real Estate And Accumulated Depreciation [Line Items]
Location	Charlotte, NC
Initial Cost Land	$ 18,835
Initial Cost Buildings and Fixtures	58,795
Gross Amount, Land	18,835
Gross Amount, Buildings and Fixtures	62,169
Total	81,004
Accumulated Depreciation	(9,182)
Net	$ 71,822
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2009
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2016
Wholly Owned Properties - Residential | MAA South Line | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 3,374
Wholly Owned Properties - Residential | MAA South Park
Real Estate And Accumulated Depreciation [Line Items]
Location	Charlotte, NC
Initial Cost Land	$ 20,869
Initial Cost Buildings and Fixtures	65,517
Gross Amount, Land	20,869
Gross Amount, Buildings and Fixtures	71,662
Total	92,531
Accumulated Depreciation	(11,933)
Net	$ 80,598
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1996
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2016
Wholly Owned Properties - Residential | MAA South Park | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 6,145
Wholly Owned Properties - Residential | MAA South Tryon
Real Estate And Accumulated Depreciation [Line Items]
Location	Charlotte, NC
Initial Cost Land	$ 2,260
Initial Cost Buildings and Fixtures	19,489
Gross Amount, Land	2,260
Gross Amount, Buildings and Fixtures	22,269
Total	24,529
Accumulated Depreciation	(6,982)
Net	$ 17,547
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2002
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2013
Wholly Owned Properties - Residential | MAA South Tryon | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 2,780
Wholly Owned Properties - Residential | MAA Timbercrest
Real Estate And Accumulated Depreciation [Line Items]
Location	Charlotte, NC
Initial Cost Land	$ 2,901
Initial Cost Buildings and Fixtures	17,192
Gross Amount, Land	2,901
Gross Amount, Buildings and Fixtures	20,588
Total	23,489
Accumulated Depreciation	(6,183)
Net	$ 17,306
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2000
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2013
Wholly Owned Properties - Residential | MAA Timbercrest | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 3,396
Wholly Owned Properties - Residential | MAA University Lake
Real Estate And Accumulated Depreciation [Line Items]
Location	Charlotte, NC
Initial Cost Land	$ 3,250
Initial Cost Buildings and Fixtures	31,389
Gross Amount, Land	3,250
Gross Amount, Buildings and Fixtures	36,539
Total	39,789
Accumulated Depreciation	(11,864)
Net	$ 27,925
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1998
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2013
Wholly Owned Properties - Residential | MAA University Lake | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 5,150
Wholly Owned Properties - Residential | MAA Uptown
Real Estate And Accumulated Depreciation [Line Items]
Location	Charlotte, NC
Initial Cost Land	$ 10,888
Initial Cost Buildings and Fixtures	30,078
Gross Amount, Land	10,888
Gross Amount, Buildings and Fixtures	32,876
Total	43,764
Accumulated Depreciation	(5,527)
Net	$ 38,237
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2000
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2016
Wholly Owned Properties - Residential | MAA Uptown | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 2,798
Wholly Owned Properties - Residential | MAA Cornelius
Real Estate And Accumulated Depreciation [Line Items]
Location	Cornelius, NC
Initial Cost Land	$ 4,571
Initial Cost Buildings and Fixtures	29,151
Gross Amount, Land	4,571
Gross Amount, Buildings and Fixtures	31,275
Total	35,846
Accumulated Depreciation	(10,161)
Net	$ 25,685
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2009
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2013
Wholly Owned Properties - Residential | MAA Cornelius | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 2,124
Wholly Owned Properties - Residential | Colonial Grand at Patterson Place [Member]
Real Estate And Accumulated Depreciation [Line Items]
Location	Durham, NC
Initial Cost Land	$ 2,590
Initial Cost Buildings and Fixtures	27,126
Gross Amount, Land	2,590
Gross Amount, Buildings and Fixtures	30,945
Total	33,535
Accumulated Depreciation	(9,593)
Net	$ 23,942
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1997
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2013
Wholly Owned Properties - Residential | Colonial Grand at Patterson Place [Member] | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 3,819
Wholly Owned Properties - Residential | Colonial Grand at Research Park [Member]
Real Estate And Accumulated Depreciation [Line Items]
Location	Durham, NC
Initial Cost Land	$ 4,201
Initial Cost Buildings and Fixtures	37,682
Gross Amount, Land	4,201
Gross Amount, Buildings and Fixtures	41,690
Total	45,891
Accumulated Depreciation	(13,146)
Net	$ 32,745
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2002
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2013
Wholly Owned Properties - Residential | Colonial Grand at Research Park [Member] | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 4,008
Wholly Owned Properties - Residential | Colonial Village at Deerfield
Real Estate And Accumulated Depreciation [Line Items]
Location	Durham, NC
Initial Cost Land	$ 3,271
Initial Cost Buildings and Fixtures	15,609
Gross Amount, Land	3,271
Gross Amount, Buildings and Fixtures	17,613
Total	20,884
Accumulated Depreciation	(6,425)
Net	$ 14,459
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1985
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2013
Wholly Owned Properties - Residential | Colonial Village at Deerfield | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 2,004
Wholly Owned Properties - Residential | MAA Huntersville
Real Estate And Accumulated Depreciation [Line Items]
Location	Huntersville, NC
Initial Cost Land	$ 4,251
Initial Cost Buildings and Fixtures	31,948
Gross Amount, Land	4,251
Gross Amount, Buildings and Fixtures	35,660
Total	39,911
Accumulated Depreciation	(11,287)
Net	$ 28,624
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2008
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2013
Wholly Owned Properties - Residential | MAA Huntersville | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 3,712
Wholly Owned Properties - Residential | MAA Fifty One
Real Estate And Accumulated Depreciation [Line Items]
Location	Matthews, NC
Initial Cost Land	$ 3,071
Initial Cost Buildings and Fixtures	21,830
Gross Amount, Land	3,071
Gross Amount, Buildings and Fixtures	27,896
Total	30,967
Accumulated Depreciation	(9,892)
Net	$ 21,075
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2008
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2013
Wholly Owned Properties - Residential | MAA Fifty One | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 6,066
Wholly Owned Properties - Residential | MAA Matthews Commons
Real Estate And Accumulated Depreciation [Line Items]
Location	Matthews, NC
Initial Cost Land	$ 3,690
Initial Cost Buildings and Fixtures	28,536
Gross Amount, Land	3,690
Gross Amount, Buildings and Fixtures	31,208
Total	34,898
Accumulated Depreciation	(9,824)
Net	$ 25,074
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2008
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2013
Wholly Owned Properties - Residential | MAA Matthews Commons | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 2,672
Wholly Owned Properties - Residential | Reserve at Arringdon
Real Estate And Accumulated Depreciation [Line Items]
Location	Morrisville, NC
Initial Cost Land	$ 6,401
Initial Cost Buildings and Fixtures	31,134
Gross Amount, Land	6,401
Gross Amount, Buildings and Fixtures	35,338
Total	41,739
Accumulated Depreciation	(11,039)
Net	$ 30,700
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2003
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2013
Wholly Owned Properties - Residential | Reserve at Arringdon | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 4,204
Wholly Owned Properties - Residential | Colonial Grand At Brier Creek Raleigh Nc
Real Estate And Accumulated Depreciation [Line Items]
Location	Raleigh, NC
Initial Cost Land	$ 7,372
Initial Cost Buildings and Fixtures	50,202
Gross Amount, Land	7,372
Gross Amount, Buildings and Fixtures	53,179
Total	60,551
Accumulated Depreciation	(15,996)
Net	$ 44,555
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2010
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2013
Wholly Owned Properties - Residential | Colonial Grand At Brier Creek Raleigh Nc | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 2,977
Wholly Owned Properties - Residential | Colonial Grand At Brier Falls Raleigh Nc
Real Estate And Accumulated Depreciation [Line Items]
Location	Raleigh, NC
Initial Cost Land	$ 6,572
Initial Cost Buildings and Fixtures	48,910
Gross Amount, Land	6,572
Gross Amount, Buildings and Fixtures	51,670
Total	58,242
Accumulated Depreciation	(15,174)
Net	$ 43,068
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2008
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2013
Wholly Owned Properties - Residential | Colonial Grand At Brier Falls Raleigh Nc | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 2,760
Wholly Owned Properties - Residential | Colonial Grand At Crabtree Valley
Real Estate And Accumulated Depreciation [Line Items]
Location	Raleigh, NC
Initial Cost Land	$ 2,241
Initial Cost Buildings and Fixtures	18,434
Gross Amount, Land	2,241
Gross Amount, Buildings and Fixtures	20,945
Total	23,186
Accumulated Depreciation	(6,105)
Net	$ 17,081
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1997
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2013
Wholly Owned Properties - Residential | Colonial Grand At Crabtree Valley | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 2,511
Wholly Owned Properties - Residential | Colonial Grand At Trinity Commons
Real Estate And Accumulated Depreciation [Line Items]
Location	Raleigh, NC
Initial Cost Land	$ 5,232
Initial Cost Buildings and Fixtures	45,138
Gross Amount, Land	5,232
Gross Amount, Buildings and Fixtures	50,206
Total	55,438
Accumulated Depreciation	(16,100)
Net	$ 39,338
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2013
Wholly Owned Properties - Residential | Colonial Grand At Trinity Commons | Phase I [Member]
Real Estate And Accumulated Depreciation [Line Items]
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2000
Wholly Owned Properties - Residential | Colonial Grand At Trinity Commons | Phase II [Member]
Real Estate And Accumulated Depreciation [Line Items]
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2002
Wholly Owned Properties - Residential | Colonial Grand At Trinity Commons | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 5,068
Wholly Owned Properties - Residential | Hue
Real Estate And Accumulated Depreciation [Line Items]
Location	Raleigh, NC
Initial Cost Land	$ 3,690
Initial Cost Buildings and Fixtures	29,910
Gross Amount, Land	3,690
Gross Amount, Buildings and Fixtures	32,489
Total	36,179
Accumulated Depreciation	(8,967)
Net	$ 27,212
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2009
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2010
Wholly Owned Properties - Residential | Hue | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 2,579
Wholly Owned Properties - Residential | Post Parksideat Wade
Real Estate And Accumulated Depreciation [Line Items]
Location	Raleigh, NC
Initial Cost Land	$ 7,196
Initial Cost Buildings and Fixtures	51,972
Gross Amount, Land	7,196
Gross Amount, Buildings and Fixtures	54,659
Total	61,855
Accumulated Depreciation	(8,476)
Net	$ 53,379
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2011
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2016
Wholly Owned Properties - Residential | Post Parksideat Wade | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 2,687
Wholly Owned Properties - Residential | Post Parksideat Wade I I
Real Estate And Accumulated Depreciation [Line Items]
Location	Raleigh, NC
Initial Cost Land	$ 9,450
Initial Cost Buildings and Fixtures	46,316
Gross Amount, Land	10,037
Gross Amount, Buildings and Fixtures	48,525
Total	58,562
Accumulated Depreciation	(11,932)
Net	$ 46,630
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2017
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2016
Wholly Owned Properties - Residential | Post Parksideat Wade I I | Land
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 587
Wholly Owned Properties - Residential | Post Parksideat Wade I I | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 2,209
Wholly Owned Properties - Residential | Post Parkside At Wade I I I
Real Estate And Accumulated Depreciation [Line Items]
Location	Raleigh, NC
Initial Cost Land	$ 2,200
Gross Amount, Land	2,200
Gross Amount, Buildings and Fixtures	22,407
Total	24,607
Accumulated Depreciation	(1,142)
Net	$ 23,465
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2019
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2016
Wholly Owned Properties - Residential | Post Parkside At Wade I I I | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 22,407
Wholly Owned Properties - Residential | Preserve At Brier Creek
Real Estate And Accumulated Depreciation [Line Items]
Location	Raleigh, NC
Initial Cost Land	$ 5,850
Initial Cost Buildings and Fixtures	21,980
Gross Amount, Land	5,831
Gross Amount, Buildings and Fixtures	48,735
Total	54,566
Accumulated Depreciation	(21,121)
Net	$ 33,445
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2004
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2006
Wholly Owned Properties - Residential | Preserve At Brier Creek | Land
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ (19)
Wholly Owned Properties - Residential | Preserve At Brier Creek | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 26,755
Wholly Owned Properties - Residential | Providence At Brier Creek
Real Estate And Accumulated Depreciation [Line Items]
Location	Raleigh, NC
Initial Cost Land	$ 4,695
Initial Cost Buildings and Fixtures	29,007
Gross Amount, Land	4,695
Gross Amount, Buildings and Fixtures	31,444
Total	36,139
Accumulated Depreciation	(13,463)
Net	$ 22,676
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2007
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2008
Wholly Owned Properties - Residential | Providence At Brier Creek | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 2,437
Wholly Owned Properties - Residential | Colonial Grand at Desert Vista
Real Estate And Accumulated Depreciation [Line Items]
Location	North Las Vegas, NV
Initial Cost Land	$ 4,091
Initial Cost Buildings and Fixtures	29,826
Gross Amount, Land	4,091
Gross Amount, Buildings and Fixtures	32,129
Total	36,220
Accumulated Depreciation	(10,207)
Net	$ 26,013
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2009
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2013
Wholly Owned Properties - Residential | Colonial Grand at Desert Vista | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 2,303
Wholly Owned Properties - Residential | Colonial Grand at Palm Vista
Real Estate And Accumulated Depreciation [Line Items]
Location	North Las Vegas, NV
Initial Cost Land	$ 4,909
Initial Cost Buildings and Fixtures	25,643
Gross Amount, Land	4,909
Gross Amount, Buildings and Fixtures	29,961
Total	34,870
Accumulated Depreciation	(9,973)
Net	$ 24,897
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2007
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2013
Wholly Owned Properties - Residential | Colonial Grand at Palm Vista | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 4,318
Wholly Owned Properties - Residential | Tanglewood
Real Estate And Accumulated Depreciation [Line Items]
Location	Anderson, SC
Initial Cost Land	$ 427
Initial Cost Buildings and Fixtures	3,853
Gross Amount, Land	427
Gross Amount, Buildings and Fixtures	6,594
Total	7,021
Accumulated Depreciation	(5,376)
Net	$ 1,645
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1980
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 1994
Wholly Owned Properties - Residential | Tanglewood | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 2,741
Wholly Owned Properties - Residential | 1201 Midtown
Real Estate And Accumulated Depreciation [Line Items]
Location	Charleston, SC
Initial Cost Land	$ 11,929
Initial Cost Buildings and Fixtures	57,885
Gross Amount, Land	11,929
Gross Amount, Buildings and Fixtures	58,839
Total	70,768
Accumulated Depreciation	(7,130)
Net	$ 63,638
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2015
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2016
Wholly Owned Properties - Residential | 1201 Midtown | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 954
Wholly Owned Properties - Residential | 1201 Midtown II
Real Estate And Accumulated Depreciation [Line Items]
Location	Charleston, SC
Initial Cost Land	$ 6,750
Initial Cost Buildings and Fixtures	5,874
Gross Amount, Land	6,750
Gross Amount, Buildings and Fixtures	22,325
Total	29,075
Accumulated Depreciation	(1,600)
Net	$ 27,475
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2018
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2016
Wholly Owned Properties - Residential | 1201 Midtown II | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 16,451
Wholly Owned Properties - Residential | Colonial Grand At Cypress Cove
Real Estate And Accumulated Depreciation [Line Items]
Location	Charleston, SC
Initial Cost Land	$ 3,610
Initial Cost Buildings and Fixtures	28,645
Gross Amount, Land	3,610
Gross Amount, Buildings and Fixtures	31,362
Total	34,972
Accumulated Depreciation	(10,031)
Net	$ 24,941
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2001
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2013
Wholly Owned Properties - Residential | Colonial Grand At Cypress Cove | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 2,717
Wholly Owned Properties - Residential | Colonial Village At Hampton Pointe
Real Estate And Accumulated Depreciation [Line Items]
Location	Charleston, SC
Initial Cost Land	$ 3,971
Initial Cost Buildings and Fixtures	22,790
Gross Amount, Land	3,971
Gross Amount, Buildings and Fixtures	29,755
Total	33,726
Accumulated Depreciation	(9,304)
Net	$ 24,422
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1986
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2013
Wholly Owned Properties - Residential | Colonial Village At Hampton Pointe | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 6,965
Wholly Owned Properties - Residential | Colonial Village At Westchase
Real Estate And Accumulated Depreciation [Line Items]
Location	Charleston, SC
Initial Cost Land	$ 4,571
Initial Cost Buildings and Fixtures	20,091
Gross Amount, Land	4,571
Gross Amount, Buildings and Fixtures	24,930
Total	29,501
Accumulated Depreciation	(8,766)
Net	$ 20,735
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1985
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2013
Wholly Owned Properties - Residential | Colonial Village At Westchase | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 4,839
Wholly Owned Properties - Residential | Quarterdeck at James Island
Real Estate And Accumulated Depreciation [Line Items]
Location	Charleston, SC
Initial Cost Land	$ 920
Initial Cost Buildings and Fixtures	24,097
Gross Amount, Land	920
Gross Amount, Buildings and Fixtures	30,570
Total	31,490
Accumulated Depreciation	(9,639)
Net	$ 21,851
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1987
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2013
Wholly Owned Properties - Residential | Quarterdeck at James Island | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 6,473
Wholly Owned Properties - Residential | Rivers Walk
Real Estate And Accumulated Depreciation [Line Items]
Location	Charleston, SC
Initial Cost Land	$ 8,831
Initial Cost Buildings and Fixtures	39,430
Gross Amount, Land	8,831
Gross Amount, Buildings and Fixtures	41,953
Total	50,784
Accumulated Depreciation	(6,852)
Net	$ 43,932
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2013
Wholly Owned Properties - Residential | Rivers Walk | Phase I [Member]
Real Estate And Accumulated Depreciation [Line Items]
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2013
Wholly Owned Properties - Residential | Rivers Walk | Phase II [Member]
Real Estate And Accumulated Depreciation [Line Items]
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2016
Wholly Owned Properties - Residential | Rivers Walk | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 2,523
Wholly Owned Properties - Residential | Paddock Club Columbia
Real Estate And Accumulated Depreciation [Line Items]
Location	Columbia, SC
Initial Cost Land	$ 1,840
Initial Cost Buildings and Fixtures	16,560
Gross Amount, Land	1,840
Gross Amount, Buildings and Fixtures	21,730
Total	23,570
Accumulated Depreciation	(15,547)
Net	$ 8,023
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1991
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 1997
Wholly Owned Properties - Residential | Paddock Club Columbia | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 5,170
Wholly Owned Properties - Residential | The Fairways
Real Estate And Accumulated Depreciation [Line Items]
Location	Columbia, SC
Initial Cost Land	$ 910
Initial Cost Buildings and Fixtures	8,207
Gross Amount, Land	910
Gross Amount, Buildings and Fixtures	11,635
Total	12,545
Accumulated Depreciation	(9,073)
Net	$ 3,472
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1992
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 1994
Wholly Owned Properties - Residential | The Fairways | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 3,428
Wholly Owned Properties - Residential | Colonial Village At Windsor Place
Real Estate And Accumulated Depreciation [Line Items]
Location	Goose Creek, SC
Initial Cost Land	$ 1,321
Initial Cost Buildings and Fixtures	14,163
Gross Amount, Land	1,321
Gross Amount, Buildings and Fixtures	17,928
Total	19,249
Accumulated Depreciation	(6,376)
Net	$ 12,873
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1985
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2013
Wholly Owned Properties - Residential | Colonial Village At Windsor Place | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 3,765
Wholly Owned Properties - Residential | Highland Ridge
Real Estate And Accumulated Depreciation [Line Items]
Location	Greenville, SC
Initial Cost Land	$ 482
Initial Cost Buildings and Fixtures	4,337
Gross Amount, Land	482
Gross Amount, Buildings and Fixtures	7,335
Total	7,817
Accumulated Depreciation	(5,123)
Net	$ 2,694
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1984
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 1995
Wholly Owned Properties - Residential | Highland Ridge | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 2,998
Wholly Owned Properties - Residential | Howell Commons
Real Estate And Accumulated Depreciation [Line Items]
Location	Greenville, SC
Initial Cost Land	$ 1,304
Initial Cost Buildings and Fixtures	11,740
Gross Amount, Land	1,304
Gross Amount, Buildings and Fixtures	16,155
Total	17,459
Accumulated Depreciation	(11,843)
Net	$ 5,616
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1987
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 1997
Wholly Owned Properties - Residential | Howell Commons | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 4,415
Wholly Owned Properties - Residential | Innovation Apartment Homes
Real Estate And Accumulated Depreciation [Line Items]
Location	Greenville, SC
Initial Cost Land	$ 4,437
Initial Cost Buildings and Fixtures	52,026
Gross Amount, Land	4,437
Gross Amount, Buildings and Fixtures	54,249
Total	58,686
Accumulated Depreciation	(8,075)
Net	$ 50,611
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2015
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2016
Wholly Owned Properties - Residential | Innovation Apartment Homes | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 2,223
Wholly Owned Properties - Residential | Paddock Club Greenville
Real Estate And Accumulated Depreciation [Line Items]
Location	Greenville, SC
Initial Cost Land	$ 1,200
Initial Cost Buildings and Fixtures	10,800
Gross Amount, Land	1,200
Gross Amount, Buildings and Fixtures	13,949
Total	15,149
Accumulated Depreciation	(9,730)
Net	$ 5,419
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1996
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 1997
Wholly Owned Properties - Residential | Paddock Club Greenville | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 3,149
Wholly Owned Properties - Residential | Park Haywood
Real Estate And Accumulated Depreciation [Line Items]
Location	Greenville, SC
Initial Cost Land	$ 325
Initial Cost Buildings and Fixtures	2,925
Gross Amount, Land	360
Gross Amount, Buildings and Fixtures	7,692
Total	8,052
Accumulated Depreciation	(5,857)
Net	$ 2,195
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1983
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 1993
Wholly Owned Properties - Residential | Park Haywood | Land
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 35
Wholly Owned Properties - Residential | Park Haywood | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 4,767
Wholly Owned Properties - Residential | Spring Creek
Real Estate And Accumulated Depreciation [Line Items]
Location	Greenville, SC
Initial Cost Land	$ 597
Initial Cost Buildings and Fixtures	5,374
Gross Amount, Land	583
Gross Amount, Buildings and Fixtures	8,347
Total	8,930
Accumulated Depreciation	(6,216)
Net	$ 2,714
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1985
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 1995
Wholly Owned Properties - Residential | Spring Creek | Land
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ (14)
Wholly Owned Properties - Residential | Spring Creek | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 2,973
Wholly Owned Properties - Residential | The Greene [Member]
Real Estate And Accumulated Depreciation [Line Items]
Location	Greenville, SC
Initial Cost Land	$ 5,420
Initial Cost Buildings and Fixtures	66,546
Gross Amount, Land	5,427
Gross Amount, Buildings and Fixtures	67,146
Total	72,573
Accumulated Depreciation	(2,072)
Net	$ 70,501
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2019
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2019
Wholly Owned Properties - Residential | The Greene [Member] | Land
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 7
Wholly Owned Properties - Residential | The Greene [Member] | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 600
Wholly Owned Properties - Residential | Runaway Bay
Real Estate And Accumulated Depreciation [Line Items]
Location	Mt. Pleasant, SC
Initial Cost Land	$ 1,085
Initial Cost Buildings and Fixtures	7,269
Gross Amount, Land	1,097
Gross Amount, Buildings and Fixtures	13,891
Total	14,988
Accumulated Depreciation	(10,344)
Net	$ 4,644
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1988
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 1995
Wholly Owned Properties - Residential | Runaway Bay | Land
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 12
Wholly Owned Properties - Residential | Runaway Bay | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 6,622
Wholly Owned Properties - Residential | Colonial Grand At Commerce Park Charleston Sc
Real Estate And Accumulated Depreciation [Line Items]
Location	North Charleston, SC
Initial Cost Land	$ 2,780
Initial Cost Buildings and Fixtures	33,966
Gross Amount, Land	2,780
Gross Amount, Buildings and Fixtures	37,480
Total	40,260
Accumulated Depreciation	(11,287)
Net	$ 28,973
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2008
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2013
Wholly Owned Properties - Residential | Colonial Grand At Commerce Park Charleston Sc | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 3,514
Wholly Owned Properties - Residential | Brookwood535
Real Estate And Accumulated Depreciation [Line Items]
Location	Simpsonville, SC
Initial Cost Land	$ 1,216
Initial Cost Buildings and Fixtures	18,666
Gross Amount, Land	1,216
Gross Amount, Buildings and Fixtures	20,888
Total	22,104
Accumulated Depreciation	(7,605)
Net	$ 14,499
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2008
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2010
Wholly Owned Properties - Residential | Brookwood535 | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 2,222
Wholly Owned Properties - Residential | Park Place
Real Estate And Accumulated Depreciation [Line Items]
Location	Spartanburg, SC
Initial Cost Land	$ 723
Initial Cost Buildings and Fixtures	6,504
Gross Amount, Land	723
Gross Amount, Buildings and Fixtures	9,315
Total	10,038
Accumulated Depreciation	(6,870)
Net	$ 3,168
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1987
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 1997
Wholly Owned Properties - Residential | Park Place | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 2,811
Wholly Owned Properties - Residential | Colonial Village At Waters Edge
Real Estate And Accumulated Depreciation [Line Items]
Location	Summerville, SC
Initial Cost Land	$ 2,103
Initial Cost Buildings and Fixtures	9,187
Gross Amount, Land	2,103
Gross Amount, Buildings and Fixtures	13,724
Total	15,827
Accumulated Depreciation	(5,627)
Net	$ 10,200
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1985
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2013
Wholly Owned Properties - Residential | Colonial Village At Waters Edge | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 4,537
Wholly Owned Properties - Residential | Farmington Village
Real Estate And Accumulated Depreciation [Line Items]
Location	Summerville, SC
Initial Cost Land	$ 2,800
Initial Cost Buildings and Fixtures	26,295
Gross Amount, Land	2,800
Gross Amount, Buildings and Fixtures	29,258
Total	32,058
Accumulated Depreciation	(13,242)
Net	$ 18,816
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2007
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2007
Wholly Owned Properties - Residential | Farmington Village | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 2,963
Wholly Owned Properties - Residential | Hamilton Pointe
Real Estate And Accumulated Depreciation [Line Items]
Location	Chattanooga, TN
Initial Cost Land	$ 1,131
Initial Cost Buildings and Fixtures	10,632
Gross Amount, Land	1,131
Gross Amount, Buildings and Fixtures	17,320
Total	18,451
Accumulated Depreciation	(8,622)
Net	$ 9,829
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1989
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 1992
Wholly Owned Properties - Residential | Hamilton Pointe | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 6,688
Wholly Owned Properties - Residential | Hidden Creek
Real Estate And Accumulated Depreciation [Line Items]
Location	Chattanooga, TN
Initial Cost Land	$ 972
Initial Cost Buildings and Fixtures	8,954
Gross Amount, Land	972
Gross Amount, Buildings and Fixtures	15,829
Total	16,801
Accumulated Depreciation	(7,757)
Net	$ 9,044
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1987
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 1988
Wholly Owned Properties - Residential | Hidden Creek | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 6,875
Wholly Owned Properties - Residential | Steeplechase
Real Estate And Accumulated Depreciation [Line Items]
Location	Chattanooga, TN
Initial Cost Land	$ 217
Initial Cost Buildings and Fixtures	1,957
Gross Amount, Land	217
Gross Amount, Buildings and Fixtures	6,177
Total	6,394
Accumulated Depreciation	(3,835)
Net	$ 2,559
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1986
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 1991
Wholly Owned Properties - Residential | Steeplechase | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 4,220
Wholly Owned Properties - Residential | Windridge
Real Estate And Accumulated Depreciation [Line Items]
Location	Chattanooga, TN
Initial Cost Land	$ 817
Initial Cost Buildings and Fixtures	7,416
Gross Amount, Land	817
Gross Amount, Buildings and Fixtures	11,814
Total	12,631
Accumulated Depreciation	(8,498)
Net	$ 4,133
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1984
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 1997
Wholly Owned Properties - Residential | Windridge | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 4,398
Wholly Owned Properties - Residential | Kirby Station
Real Estate And Accumulated Depreciation [Line Items]
Location	Memphis, TN
Initial Cost Land	$ 1,148
Initial Cost Buildings and Fixtures	10,337
Gross Amount, Land	1,148
Gross Amount, Buildings and Fixtures	20,715
Total	21,863
Accumulated Depreciation	(15,153)
Net	$ 6,710
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1978
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 1994
Wholly Owned Properties - Residential | Kirby Station | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 10,378
Wholly Owned Properties - Residential | Lincoln On Green
Real Estate And Accumulated Depreciation [Line Items]
Location	Memphis, TN
Initial Cost Land	$ 1,498
Initial Cost Buildings and Fixtures	20,483
Gross Amount, Land	1,498
Gross Amount, Buildings and Fixtures	37,204
Total	38,702
Accumulated Depreciation	(27,617)
Net	$ 11,085
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1992
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 1994
Wholly Owned Properties - Residential | Lincoln On Green | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 16,721
Wholly Owned Properties - Residential | Park Estate
Real Estate And Accumulated Depreciation [Line Items]
Location	Memphis, TN
Initial Cost Land	$ 178
Initial Cost Buildings and Fixtures	1,141
Gross Amount, Land	178
Gross Amount, Buildings and Fixtures	4,728
Total	4,906
Accumulated Depreciation	(3,482)
Net	$ 1,424
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1974
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 1977
Wholly Owned Properties - Residential | Park Estate | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 3,587
Wholly Owned Properties - Residential | Reserve At Dexter Lake
Real Estate And Accumulated Depreciation [Line Items]
Location	Memphis, TN
Initial Cost Land	$ 1,260
Initial Cost Buildings and Fixtures	16,043
Gross Amount, Land	3,407
Gross Amount, Buildings and Fixtures	59,923
Total	63,330
Accumulated Depreciation	(30,350)
Net	$ 32,980
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2000
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 1998
Wholly Owned Properties - Residential | Reserve At Dexter Lake | Land
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 2,147
Wholly Owned Properties - Residential | Reserve At Dexter Lake | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 43,880
Wholly Owned Properties - Residential | Paddock Club Murfreesboro
Real Estate And Accumulated Depreciation [Line Items]
Location	Murfreesboro, TN
Initial Cost Land	$ 915
Initial Cost Buildings and Fixtures	14,774
Gross Amount, Land	915
Gross Amount, Buildings and Fixtures	18,818
Total	19,733
Accumulated Depreciation	(10,577)
Net	$ 9,156
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1999
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 1998
Wholly Owned Properties - Residential | Paddock Club Murfreesboro | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 4,044
Wholly Owned Properties - Residential | Acklen West End
Real Estate And Accumulated Depreciation [Line Items]
Location	Nashville, TN
Initial Cost Land	$ 12,761
Initial Cost Buildings and Fixtures	58,906
Gross Amount, Land	12,761
Gross Amount, Buildings and Fixtures	60,620
Total	73,381
Accumulated Depreciation	(6,643)
Net	$ 66,738
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2015
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2017
Wholly Owned Properties - Residential | Acklen West End | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 1,714
Wholly Owned Properties - Residential | Aventura At Indian Lake Village
Real Estate And Accumulated Depreciation [Line Items]
Location	Nashville, TN
Initial Cost Land	$ 4,950
Initial Cost Buildings and Fixtures	28,053
Gross Amount, Land	4,950
Gross Amount, Buildings and Fixtures	30,800
Total	35,750
Accumulated Depreciation	(9,845)
Net	$ 25,905
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2010
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2011
Wholly Owned Properties - Residential | Aventura At Indian Lake Village | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 2,747
Wholly Owned Properties - Residential | Avondale At Kennesaw
Real Estate And Accumulated Depreciation [Line Items]
Location	Nashville, TN
Initial Cost Land	$ 3,456
Initial Cost Buildings and Fixtures	22,443
Gross Amount, Land	3,456
Gross Amount, Buildings and Fixtures	26,454
Total	29,910
Accumulated Depreciation	(9,468)
Net	$ 20,442
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2008
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2010
Wholly Owned Properties - Residential | Avondale At Kennesaw | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 4,011
Wholly Owned Properties - Residential | Brentwood Downs
Real Estate And Accumulated Depreciation [Line Items]
Location	Nashville, TN
Initial Cost Land	$ 1,193
Initial Cost Buildings and Fixtures	10,739
Gross Amount, Land	1,191
Gross Amount, Buildings and Fixtures	19,685
Total	20,876
Accumulated Depreciation	(13,542)
Net	$ 7,334
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1986
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 1994
Wholly Owned Properties - Residential | Brentwood Downs | Land
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ (2)
Wholly Owned Properties - Residential | Brentwood Downs | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 8,946
Wholly Owned Properties - Residential | Charlotteat M Idtown
Real Estate And Accumulated Depreciation [Line Items]
Location	Nashville, TN
Initial Cost Land	$ 7,898
Initial Cost Buildings and Fixtures	54,480
Gross Amount, Land	7,898
Gross Amount, Buildings and Fixtures	56,172
Total	64,070
Accumulated Depreciation	(6,139)
Net	$ 57,931
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2016
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2017
Wholly Owned Properties - Residential | Charlotteat M Idtown | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 1,692
Wholly Owned Properties - Residential | Colonial Grand At Bellevue
Real Estate And Accumulated Depreciation [Line Items]
Location	Nashville, TN
Initial Cost Land	$ 17,278
Initial Cost Buildings and Fixtures	64,196
Gross Amount, Land	17,276
Gross Amount, Buildings and Fixtures	69,773
Total	87,049
Accumulated Depreciation	(17,249)
Net	$ 69,800
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2013
Wholly Owned Properties - Residential | Colonial Grand At Bellevue | Phase I [Member]
Real Estate And Accumulated Depreciation [Line Items]
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1996
Wholly Owned Properties - Residential | Colonial Grand At Bellevue | Phase II [Member]
Real Estate And Accumulated Depreciation [Line Items]
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2015
Wholly Owned Properties - Residential | Colonial Grand At Bellevue | Land
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ (2)
Wholly Owned Properties - Residential | Colonial Grand At Bellevue | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 5,577
Wholly Owned Properties - Residential | Grand View Nashville
Real Estate And Accumulated Depreciation [Line Items]
Location	Nashville, TN
Initial Cost Land	$ 2,963
Initial Cost Buildings and Fixtures	33,673
Gross Amount, Land	2,963
Gross Amount, Buildings and Fixtures	42,450
Total	45,413
Accumulated Depreciation	(22,334)
Net	$ 23,079
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2001
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 1998
Wholly Owned Properties - Residential | Grand View Nashville | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 8,777
Wholly Owned Properties - Residential | Monthaven Park
Real Estate And Accumulated Depreciation [Line Items]
Location	Nashville, TN
Initial Cost Land	$ 2,736
Initial Cost Buildings and Fixtures	28,902
Gross Amount, Land	2,736
Gross Amount, Buildings and Fixtures	35,148
Total	37,884
Accumulated Depreciation	(19,946)
Net	$ 17,938
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2000
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2004
Wholly Owned Properties - Residential | Monthaven Park | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 6,246
Wholly Owned Properties - Residential | Park At Hermitage
Real Estate And Accumulated Depreciation [Line Items]
Location	Nashville, TN
Initial Cost Land	$ 1,524
Initial Cost Buildings and Fixtures	14,800
Gross Amount, Land	1,524
Gross Amount, Buildings and Fixtures	23,639
Total	25,163
Accumulated Depreciation	(18,064)
Net	$ 7,099
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1987
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 1995
Wholly Owned Properties - Residential | Park At Hermitage | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 8,839
Wholly Owned Properties - Residential | Venue At Cool Springs
Real Estate And Accumulated Depreciation [Line Items]
Location	Nashville, TN
Initial Cost Land	$ 6,670
Gross Amount, Land	6,670
Gross Amount, Buildings and Fixtures	52,837
Total	59,507
Accumulated Depreciation	(11,775)
Net	$ 47,732
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2012
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2010
Wholly Owned Properties - Residential | Venue At Cool Springs | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 52,837
Wholly Owned Properties - Residential | Verandas At Sam Ridley
Real Estate And Accumulated Depreciation [Line Items]
Location	Nashville, TN
Initial Cost Land	$ 3,350
Initial Cost Buildings and Fixtures	28,308
Gross Amount, Land	3,350
Gross Amount, Buildings and Fixtures	32,200
Total	35,550
Accumulated Depreciation	(11,401)
Net	$ 24,149
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2009
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2010
Wholly Owned Properties - Residential | Verandas At Sam Ridley | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 3,892
Wholly Owned Properties - Residential | Balcones Woods
Real Estate And Accumulated Depreciation [Line Items]
Location	Austin, TX
Initial Cost Land	$ 1,598
Initial Cost Buildings and Fixtures	14,398
Gross Amount, Land	1,598
Gross Amount, Buildings and Fixtures	24,183
Total	25,781
Accumulated Depreciation	(17,292)
Net	$ 8,489
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1983
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 1997
Wholly Owned Properties - Residential | Balcones Woods | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 9,785
Wholly Owned Properties - Residential | Colonial Grand At Canyon Creek Austin Tx
Real Estate And Accumulated Depreciation [Line Items]
Location	Austin, TX
Initial Cost Land	$ 3,621
Initial Cost Buildings and Fixtures	32,137
Gross Amount, Land	3,621
Gross Amount, Buildings and Fixtures	34,349
Total	37,970
Accumulated Depreciation	(10,837)
Net	$ 27,133
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2008
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2013
Wholly Owned Properties - Residential | Colonial Grand At Canyon Creek Austin Tx | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 2,212
Wholly Owned Properties - Residential | Colonial Grand at Canyon Pointe
Real Estate And Accumulated Depreciation [Line Items]
Location	Austin, TX
Initial Cost Land	$ 3,778
Initial Cost Buildings and Fixtures	20,201
Gross Amount, Land	3,778
Gross Amount, Buildings and Fixtures	22,981
Total	26,759
Accumulated Depreciation	(7,995)
Net	$ 18,764
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2003
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2013
Wholly Owned Properties - Residential | Colonial Grand at Canyon Pointe | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 2,780
Wholly Owned Properties - Residential | Colonial Grand At Double Creek Austin Tx
Real Estate And Accumulated Depreciation [Line Items]
Location	Austin, TX
Initial Cost Land	$ 3,131
Initial Cost Buildings and Fixtures	29,375
Gross Amount, Land	3,131
Gross Amount, Buildings and Fixtures	30,659
Total	33,790
Accumulated Depreciation	(9,669)
Net	$ 24,121
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2013
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2013
Wholly Owned Properties - Residential | Colonial Grand At Double Creek Austin Tx | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 1,284
Wholly Owned Properties - Residential | Colonial Grand At Onion Creek
Real Estate And Accumulated Depreciation [Line Items]
Location	Austin, TX
Initial Cost Land	$ 4,902
Initial Cost Buildings and Fixtures	33,010
Gross Amount, Land	4,902
Gross Amount, Buildings and Fixtures	35,692
Total	40,594
Accumulated Depreciation	(11,464)
Net	$ 29,130
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2009
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2013
Wholly Owned Properties - Residential | Colonial Grand At Onion Creek | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 2,682
Wholly Owned Properties - Residential | Colonial Grand At Wells Branch
Real Estate And Accumulated Depreciation [Line Items]
Location	Austin, TX
Initial Cost Land	$ 3,094
Initial Cost Buildings and Fixtures	32,283
Gross Amount, Land	3,388
Gross Amount, Buildings and Fixtures	34,570
Total	37,958
Accumulated Depreciation	(10,328)
Net	$ 27,630
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2008
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2013
Wholly Owned Properties - Residential | Colonial Grand At Wells Branch | Land
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 294
Wholly Owned Properties - Residential | Colonial Grand At Wells Branch | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 2,287
Wholly Owned Properties - Residential | Colonial Village At Quarry Oaks
Real Estate And Accumulated Depreciation [Line Items]
Location	Austin, TX
Initial Cost Land	$ 4,621
Initial Cost Buildings and Fixtures	34,461
Gross Amount, Land	4,621
Gross Amount, Buildings and Fixtures	41,758
Total	46,379
Accumulated Depreciation	(14,463)
Net	$ 31,916
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1996
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2013
Wholly Owned Properties - Residential | Colonial Village At Quarry Oaks | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 7,297
Wholly Owned Properties - Residential | Grand Reserve At Sunset Valley
Real Estate And Accumulated Depreciation [Line Items]
Location	Austin, TX
Initial Cost Land	$ 3,150
Initial Cost Buildings and Fixtures	11,393
Gross Amount, Land	3,150
Gross Amount, Buildings and Fixtures	15,457
Total	18,607
Accumulated Depreciation	(8,415)
Net	$ 10,192
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1996
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2004
Wholly Owned Properties - Residential | Grand Reserve At Sunset Valley | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 4,064
Wholly Owned Properties - Residential | Legacy At Western Oaks
Real Estate And Accumulated Depreciation [Line Items]
Location	Austin, TX
Initial Cost Land	$ 9,100
Initial Cost Buildings and Fixtures	49,339
Gross Amount, Land	9,100
Gross Amount, Buildings and Fixtures	50,958
Total	60,058
Accumulated Depreciation	(15,957)
Net	$ 44,101
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2001
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2009
Wholly Owned Properties - Residential | Legacy At Western Oaks | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 1,619
Wholly Owned Properties - Residential | Post Barton Creek
Real Estate And Accumulated Depreciation [Line Items]
Location	Austin, TX
Initial Cost Land	$ 8,683
Initial Cost Buildings and Fixtures	21,497
Gross Amount, Land	8,683
Gross Amount, Buildings and Fixtures	23,276
Total	31,959
Accumulated Depreciation	(4,315)
Net	$ 27,644
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1998
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2016
Wholly Owned Properties - Residential | Post Barton Creek | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 1,779
Wholly Owned Properties - Residential | Post Park Mesa
Real Estate And Accumulated Depreciation [Line Items]
Location	Austin, TX
Initial Cost Land	$ 4,653
Initial Cost Buildings and Fixtures	19,828
Gross Amount, Land	4,653
Gross Amount, Buildings and Fixtures	21,154
Total	25,807
Accumulated Depreciation	(3,423)
Net	$ 22,384
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1992
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2016
Wholly Owned Properties - Residential | Post Park Mesa | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 1,326
Wholly Owned Properties - Residential | Post South Lamar
Real Estate And Accumulated Depreciation [Line Items]
Location	Austin, TX
Initial Cost Land	$ 11,542
Initial Cost Buildings and Fixtures	41,293
Gross Amount, Land	11,542
Gross Amount, Buildings and Fixtures	44,997
Total	56,539
Accumulated Depreciation	(8,822)
Net	$ 47,717
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2011
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2016
Wholly Owned Properties - Residential | Post South Lamar | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 3,704
Wholly Owned Properties - Residential | Post South Lamar I I
Real Estate And Accumulated Depreciation [Line Items]
Location	Austin, TX
Initial Cost Land	$ 9,000
Initial Cost Buildings and Fixtures	32,800
Gross Amount, Land	9,000
Gross Amount, Buildings and Fixtures	52,934
Total	61,934
Accumulated Depreciation	(5,292)
Net	$ 56,642
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2017
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2016
Wholly Owned Properties - Residential | Post South Lamar I I | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 20,134
Wholly Owned Properties - Residential | Post West Austin
Real Estate And Accumulated Depreciation [Line Items]
Location	Austin, TX
Initial Cost Land	$ 7,805
Initial Cost Buildings and Fixtures	48,843
Gross Amount, Land	7,805
Gross Amount, Buildings and Fixtures	51,046
Total	58,851
Accumulated Depreciation	(9,935)
Net	$ 48,916
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2009
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2016
Wholly Owned Properties - Residential | Post West Austin | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 2,203
Wholly Owned Properties - Residential | Silverado at Brushy Creek
Real Estate And Accumulated Depreciation [Line Items]
Location	Austin, TX
Initial Cost Land	$ 2,900
Initial Cost Buildings and Fixtures	24,009
Gross Amount, Land	2,900
Gross Amount, Buildings and Fixtures	28,797
Total	31,697
Accumulated Depreciation	(14,486)
Net	$ 17,211
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2003
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2006
Wholly Owned Properties - Residential | Silverado at Brushy Creek | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 4,788
Wholly Owned Properties - Residential | Sixty 600
Real Estate And Accumulated Depreciation [Line Items]
Location	Austin, TX
Initial Cost Land	$ 2,281
Initial Cost Buildings and Fixtures	6,169
Gross Amount, Land	2,281
Gross Amount, Buildings and Fixtures	13,963
Total	16,244
Accumulated Depreciation	(9,297)
Net	$ 6,947
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1987
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 1995
Wholly Owned Properties - Residential | Sixty 600 | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 7,794
Wholly Owned Properties - Residential | Stassney Woods
Real Estate And Accumulated Depreciation [Line Items]
Location	Austin, TX
Initial Cost Land	$ 1,621
Initial Cost Buildings and Fixtures	7,501
Gross Amount, Land	1,621
Gross Amount, Buildings and Fixtures	15,904
Total	17,525
Accumulated Depreciation	(10,580)
Net	$ 6,945
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1985
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 1995
Wholly Owned Properties - Residential | Stassney Woods | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 8,403
Wholly Owned Properties - Residential | The Woods on Barton Skyway
Real Estate And Accumulated Depreciation [Line Items]
Location	Austin, TX
Initial Cost Land	$ 1,405
Initial Cost Buildings and Fixtures	12,769
Gross Amount, Land	1,405
Gross Amount, Buildings and Fixtures	24,812
Total	26,217
Accumulated Depreciation	(12,214)
Net	$ 14,003
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1977
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 1997
Wholly Owned Properties - Residential | The Woods on Barton Skyway | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 12,043
Wholly Owned Properties - Residential | Colonial Village at Shoal Creek
Real Estate And Accumulated Depreciation [Line Items]
Location	Bedford, TX
Initial Cost Land	$ 4,982
Initial Cost Buildings and Fixtures	27,377
Gross Amount, Land	4,982
Gross Amount, Buildings and Fixtures	31,840
Total	36,822
Accumulated Depreciation	(10,699)
Net	$ 26,123
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1996
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2013
Wholly Owned Properties - Residential | Colonial Village at Shoal Creek | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 4,463
Wholly Owned Properties - Residential | Colonial Village at Willow Creek
Real Estate And Accumulated Depreciation [Line Items]
Location	Bedford, TX
Initial Cost Land	$ 3,109
Initial Cost Buildings and Fixtures	33,488
Gross Amount, Land	3,109
Gross Amount, Buildings and Fixtures	42,453
Total	45,562
Accumulated Depreciation	(14,258)
Net	$ 31,304
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1996
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2013
Wholly Owned Properties - Residential | Colonial Village at Willow Creek | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 8,965
Wholly Owned Properties - Residential | Colonial Grand at Hebron
Real Estate And Accumulated Depreciation [Line Items]
Location	Carrollton, TX
Initial Cost Land	$ 4,231
Initial Cost Buildings and Fixtures	42,237
Gross Amount, Land	4,231
Gross Amount, Buildings and Fixtures	44,553
Total	48,784
Accumulated Depreciation	(12,640)
Net	$ 36,144
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2011
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2013
Wholly Owned Properties - Residential | Colonial Grand at Hebron | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 2,316
Wholly Owned Properties - Residential | Colonial Grand at Silverado
Real Estate And Accumulated Depreciation [Line Items]
Location	Cedar Park, TX
Initial Cost Land	$ 3,282
Initial Cost Buildings and Fixtures	24,935
Gross Amount, Land	3,282
Gross Amount, Buildings and Fixtures	26,781
Total	30,063
Accumulated Depreciation	(8,371)
Net	$ 21,692
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2005
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2013
Wholly Owned Properties - Residential | Colonial Grand at Silverado | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 1,846
Wholly Owned Properties - Residential | Colonial Grand at Silverado Reserve
Real Estate And Accumulated Depreciation [Line Items]
Location	Cedar Park, TX
Initial Cost Land	$ 3,951
Initial Cost Buildings and Fixtures	31,705
Gross Amount, Land	3,951
Gross Amount, Buildings and Fixtures	34,293
Total	38,244
Accumulated Depreciation	(10,495)
Net	$ 27,749
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2005
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2013
Wholly Owned Properties - Residential | Colonial Grand at Silverado Reserve | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 2,588
Wholly Owned Properties - Residential | Grand Cypress
Real Estate And Accumulated Depreciation [Line Items]
Location	Cypress, TX
Initial Cost Land	$ 3,881
Initial Cost Buildings and Fixtures	24,267
Gross Amount, Land	3,881
Gross Amount, Buildings and Fixtures	26,081
Total	29,962
Accumulated Depreciation	(6,036)
Net	$ 23,926
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2008
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2013
Wholly Owned Properties - Residential | Grand Cypress | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 1,814
Wholly Owned Properties - Residential | Colonial Reserve at Medical District
Real Estate And Accumulated Depreciation [Line Items]
Location	Dallas, TX
Initial Cost Land	$ 4,050
Initial Cost Buildings and Fixtures	33,779
Gross Amount, Land	4,050
Gross Amount, Buildings and Fixtures	36,594
Total	40,644
Accumulated Depreciation	(10,055)
Net	$ 30,589
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2007
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2013
Wholly Owned Properties - Residential | Colonial Reserve at Medical District | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 2,815
Wholly Owned Properties - Residential | Courtyards at Campbell
Real Estate And Accumulated Depreciation [Line Items]
Location	Dallas, TX
Initial Cost Land	$ 988
Initial Cost Buildings and Fixtures	8,893
Gross Amount, Land	988
Gross Amount, Buildings and Fixtures	13,220
Total	14,208
Accumulated Depreciation	(9,130)
Net	$ 5,078
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1986
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 1998
Wholly Owned Properties - Residential | Courtyards at Campbell | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 4,327
Wholly Owned Properties - Residential | Deer Run
Real Estate And Accumulated Depreciation [Line Items]
Location	Dallas, TX
Initial Cost Land	$ 1,252
Initial Cost Buildings and Fixtures	11,271
Gross Amount, Land	1,252
Gross Amount, Buildings and Fixtures	16,305
Total	17,557
Accumulated Depreciation	(11,804)
Net	$ 5,753
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1985
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 1998
Wholly Owned Properties - Residential | Deer Run | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 5,034
Wholly Owned Properties - Residential | Grand Courtyards
Real Estate And Accumulated Depreciation [Line Items]
Location	Dallas, TX
Initial Cost Land	$ 2,730
Initial Cost Buildings and Fixtures	22,240
Gross Amount, Land	2,730
Gross Amount, Buildings and Fixtures	27,088
Total	29,818
Accumulated Depreciation	(13,175)
Net	$ 16,643
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2000
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2006
Wholly Owned Properties - Residential | Grand Courtyards | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 4,848
Wholly Owned Properties - Residential | Legends at Lowe's Farm
Real Estate And Accumulated Depreciation [Line Items]
Location	Dallas, TX
Initial Cost Land	$ 5,016
Initial Cost Buildings and Fixtures	41,091
Gross Amount, Land	5,016
Gross Amount, Buildings and Fixtures	44,007
Total	49,023
Accumulated Depreciation	(14,543)
Net	$ 34,480
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2008
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2011
Wholly Owned Properties - Residential | Legends at Lowe's Farm | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 2,916
Wholly Owned Properties - Residential | MAA Frisco Bridges I/III
Real Estate And Accumulated Depreciation [Line Items]
Location	Dallas, TX
Initial Cost Land	$ 8,745
Initial Cost Buildings and Fixtures	66,571
Gross Amount, Land	8,745
Gross Amount, Buildings and Fixtures	70,467
Total	79,212
Accumulated Depreciation	(16,574)
Net	$ 62,638
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2009
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2016
Wholly Owned Properties - Residential | MAA Frisco Bridges I/III | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 3,896
Wholly Owned Properties - Residential | MAA McKinney Avenue
Real Estate And Accumulated Depreciation [Line Items]
Location	Dallas, TX
Initial Cost Land	$ 13,178
Initial Cost Buildings and Fixtures	24,048
Gross Amount, Land	13,178
Gross Amount, Buildings and Fixtures	28,296
Total	41,474
Accumulated Depreciation	(4,339)
Net	$ 37,135
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1996
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2016
Wholly Owned Properties - Residential | MAA McKinney Avenue | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 4,248
Wholly Owned Properties - Residential | MAA McKinney Avenue II
Real Estate And Accumulated Depreciation [Line Items]
Location	Dallas, TX
Initial Cost Land	$ 13,621
Initial Cost Buildings and Fixtures	8,608
Gross Amount, Land	13,621
Gross Amount, Buildings and Fixtures	11,334
Total	24,955
Accumulated Depreciation	(1,984)
Net	$ 22,971
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1993
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2016
Wholly Owned Properties - Residential | MAA McKinney Avenue II | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 2,726
Wholly Owned Properties - Residential | MAA McKinney Avenue III
Real Estate And Accumulated Depreciation [Line Items]
Location	Dallas, TX
Initial Cost Land	$ 7,966
Initial Cost Buildings and Fixtures	7,471
Gross Amount, Land	7,966
Gross Amount, Buildings and Fixtures	9,407
Total	17,373
Accumulated Depreciation	(1,565)
Net	$ 15,808
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1996
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2016
Wholly Owned Properties - Residential | MAA McKinney Avenue III | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 1,936
Wholly Owned Properties - Residential | MAA Worthington
Real Estate And Accumulated Depreciation [Line Items]
Location	Dallas, TX
Initial Cost Land	$ 13,713
Initial Cost Buildings and Fixtures	43,268
Gross Amount, Land	13,713
Gross Amount, Buildings and Fixtures	49,324
Total	63,037
Accumulated Depreciation	(7,368)
Net	$ 55,669
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2016
Wholly Owned Properties - Residential | MAA Worthington | Phase I [Member]
Real Estate And Accumulated Depreciation [Line Items]
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1993
Wholly Owned Properties - Residential | MAA Worthington | Phase II [Member]
Real Estate And Accumulated Depreciation [Line Items]
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2008
Wholly Owned Properties - Residential | MAA Worthington | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 6,056
Wholly Owned Properties - Residential | Post Abbey
Real Estate And Accumulated Depreciation [Line Items]
Location	Dallas, TX
Initial Cost Land	$ 2,711
Initial Cost Buildings and Fixtures	4,369
Gross Amount, Land	2,711
Gross Amount, Buildings and Fixtures	4,772
Total	7,483
Accumulated Depreciation	(813)
Net	$ 6,670
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1996
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2016
Wholly Owned Properties - Residential | Post Abbey | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 403
Wholly Owned Properties - Residential | Post Addison Circle
Real Estate And Accumulated Depreciation [Line Items]
Location	Dallas, TX
Initial Cost Land	$ 12,308
Initial Cost Buildings and Fixtures	189,419
Gross Amount, Land	12,308
Gross Amount, Buildings and Fixtures	204,421
Total	216,729
Accumulated Depreciation	(33,343)
Net	$ 183,386
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2016
Wholly Owned Properties - Residential | Post Addison Circle | Phase I [Member]
Real Estate And Accumulated Depreciation [Line Items]
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1998
Wholly Owned Properties - Residential | Post Addison Circle | Phase II [Member]
Real Estate And Accumulated Depreciation [Line Items]
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2000
Wholly Owned Properties - Residential | Post Addison Circle | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 15,002
Wholly Owned Properties - Residential | Post Cole's Corner
Real Estate And Accumulated Depreciation [Line Items]
Location	Dallas, TX
Initial Cost Land	$ 13,030
Initial Cost Buildings and Fixtures	14,383
Gross Amount, Land	13,030
Gross Amount, Buildings and Fixtures	17,358
Total	30,388
Accumulated Depreciation	(3,309)
Net	$ 27,079
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1998
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2016
Wholly Owned Properties - Residential | Post Cole's Corner | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 2,975
Wholly Owned Properties - Residential | Post Eastside
Real Estate And Accumulated Depreciation [Line Items]
Location	Dallas, TX
Initial Cost Land	$ 7,134
Initial Cost Buildings and Fixtures	58,095
Gross Amount, Land	7,134
Gross Amount, Buildings and Fixtures	60,488
Total	67,622
Accumulated Depreciation	(10,636)
Net	$ 56,986
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2008
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2016
Wholly Owned Properties - Residential | Post Eastside | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 2,393
Wholly Owned Properties - Residential | Post Gallery
Real Estate And Accumulated Depreciation [Line Items]
Location	Dallas, TX
Initial Cost Land	$ 4,391
Initial Cost Buildings and Fixtures	7,910
Gross Amount, Land	4,391
Gross Amount, Buildings and Fixtures	8,989
Total	13,380
Accumulated Depreciation	(1,852)
Net	$ 11,528
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1999
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2016
Wholly Owned Properties - Residential | Post Gallery | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 1,079
Wholly Owned Properties - Residential | Post Heights
Real Estate And Accumulated Depreciation [Line Items]
Location	Dallas, TX
Initial Cost Land	$ 26,245
Initial Cost Buildings and Fixtures	37,922
Gross Amount, Land	26,245
Gross Amount, Buildings and Fixtures	40,342
Total	66,587
Accumulated Depreciation	(7,074)
Net	$ 59,513
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2016
Wholly Owned Properties - Residential | Post Heights | Phase I [Member]
Real Estate And Accumulated Depreciation [Line Items]
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1998
Wholly Owned Properties - Residential | Post Heights | Phase II [Member]
Real Estate And Accumulated Depreciation [Line Items]
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1999
Wholly Owned Properties - Residential | Post Heights | Phase III [Member]
Real Estate And Accumulated Depreciation [Line Items]
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2009
Wholly Owned Properties - Residential | Post Heights | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 2,420
Wholly Owned Properties - Residential | Post Katy Trail
Real Estate And Accumulated Depreciation [Line Items]
Location	Dallas, TX
Initial Cost Land	$ 10,333
Initial Cost Buildings and Fixtures	32,456
Gross Amount, Land	10,333
Gross Amount, Buildings and Fixtures	33,830
Total	44,163
Accumulated Depreciation	(5,130)
Net	$ 39,033
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2010
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2016
Wholly Owned Properties - Residential | Post Katy Trail | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 1,374
Wholly Owned Properties - Residential | Post Legacy
Real Estate And Accumulated Depreciation [Line Items]
Location	Dallas, TX
Initial Cost Land	$ 6,575
Initial Cost Buildings and Fixtures	55,277
Gross Amount, Land	6,575
Gross Amount, Buildings and Fixtures	60,058
Total	66,633
Accumulated Depreciation	(9,694)
Net	$ 56,939
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2000
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2016
Wholly Owned Properties - Residential | Post Legacy | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 4,781
Wholly Owned Properties - Residential | Post Meridian
Real Estate And Accumulated Depreciation [Line Items]
Location	Dallas, TX
Initial Cost Land	$ 8,780
Initial Cost Buildings and Fixtures	13,654
Gross Amount, Land	8,780
Gross Amount, Buildings and Fixtures	14,493
Total	23,273
Accumulated Depreciation	(2,611)
Net	$ 20,662
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1991
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2016
Wholly Owned Properties - Residential | Post Meridian | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 839
Wholly Owned Properties - Residential | Post Uptown Village
Real Estate And Accumulated Depreciation [Line Items]
Location	Dallas, TX
Initial Cost Land	$ 34,974
Initial Cost Buildings and Fixtures	33,213
Gross Amount, Land	34,974
Gross Amount, Buildings and Fixtures	39,182
Total	74,156
Accumulated Depreciation	(7,154)
Net	$ 67,002
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2016
Wholly Owned Properties - Residential | Post Uptown Village | Phase I [Member]
Real Estate And Accumulated Depreciation [Line Items]
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1995
Wholly Owned Properties - Residential | Post Uptown Village | Phase II [Member]
Real Estate And Accumulated Depreciation [Line Items]
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2000
Wholly Owned Properties - Residential | Post Uptown Village | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 5,969
Wholly Owned Properties - Residential | Watermark
Real Estate And Accumulated Depreciation [Line Items]
Location	Dallas, TX
Initial Cost Land	$ 960
Initial Cost Buildings and Fixtures	14,438
Gross Amount, Land	960
Gross Amount, Buildings and Fixtures	17,518
Total	18,478
Accumulated Depreciation	(9,748)
Net	$ 8,730
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2002
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2004
Wholly Owned Properties - Residential | Watermark | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 3,080
Wholly Owned Properties - Residential | Colonial Grand at Bear Creek
Real Estate And Accumulated Depreciation [Line Items]
Location	Euless, TX
Initial Cost Land	$ 6,453
Initial Cost Buildings and Fixtures	30,048
Gross Amount, Land	6,453
Gross Amount, Buildings and Fixtures	33,685
Total	40,138
Accumulated Depreciation	(11,649)
Net	$ 28,489
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1998
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2013
Wholly Owned Properties - Residential | Colonial Grand at Bear Creek | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 3,637
Wholly Owned Properties - Residential | Colonial Grand at Fairview
Real Estate And Accumulated Depreciation [Line Items]
Location	Fairview, TX
Initial Cost Land	$ 2,171
Initial Cost Buildings and Fixtures	35,077
Gross Amount, Land	2,171
Gross Amount, Buildings and Fixtures	36,468
Total	38,639
Accumulated Depreciation	(10,300)
Net	$ 28,339
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2012
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2013
Wholly Owned Properties - Residential | Colonial Grand at Fairview | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 1,391
Wholly Owned Properties - Residential | La Valencia at Starwood
Real Estate And Accumulated Depreciation [Line Items]
Location	Frisco, TX
Initial Cost Land	$ 3,240
Initial Cost Buildings and Fixtures	26,069
Gross Amount, Land	3,240
Gross Amount, Buildings and Fixtures	28,110
Total	31,350
Accumulated Depreciation	(10,144)
Net	$ 21,206
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2009
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2010
Wholly Owned Properties - Residential | La Valencia at Starwood | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 2,041
Wholly Owned Properties - Residential | Colonial Village at Grapevine
Real Estate And Accumulated Depreciation [Line Items]
Location	Grapevine, TX
Initial Cost Land	$ 2,351
Initial Cost Buildings and Fixtures	29,757
Gross Amount, Land	2,351
Gross Amount, Buildings and Fixtures	36,742
Total	39,093
Accumulated Depreciation	(11,674)
Net	$ 27,419
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2013
Wholly Owned Properties - Residential | Colonial Village at Grapevine | Phase I [Member]
Real Estate And Accumulated Depreciation [Line Items]
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1985
Wholly Owned Properties - Residential | Colonial Village at Grapevine | Phase II [Member]
Real Estate And Accumulated Depreciation [Line Items]
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1986
Wholly Owned Properties - Residential | Colonial Village at Grapevine | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 6,985
Wholly Owned Properties - Residential | Greenwood Forest
Real Estate And Accumulated Depreciation [Line Items]
Location	Houston, TX
Initial Cost Land	$ 3,465
Initial Cost Buildings and Fixtures	23,482
Gross Amount, Land	3,465
Gross Amount, Buildings and Fixtures	25,167
Total	28,632
Accumulated Depreciation	(6,907)
Net	$ 21,725
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1994
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2013
Wholly Owned Properties - Residential | Greenwood Forest | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 1,685
Wholly Owned Properties - Residential | Legacy Pines
Real Estate And Accumulated Depreciation [Line Items]
Location	Houston, TX
Initial Cost Land	$ 2,157
Initial Cost Buildings and Fixtures	19,066
Gross Amount, Land	2,142
Gross Amount, Buildings and Fixtures	23,238
Total	25,380
Accumulated Depreciation	(13,617)
Net	$ 11,763
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1999
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2003
Wholly Owned Properties - Residential | Legacy Pines | Land
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ (15)
Wholly Owned Properties - Residential | Legacy Pines | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 4,172
Wholly Owned Properties - Residential | Park Place Houston
Real Estate And Accumulated Depreciation [Line Items]
Location	Houston, TX
Initial Cost Land	$ 2,061
Initial Cost Buildings and Fixtures	15,830
Gross Amount, Land	2,061
Gross Amount, Buildings and Fixtures	19,051
Total	21,112
Accumulated Depreciation	(9,071)
Net	$ 12,041
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1996
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2007
Wholly Owned Properties - Residential | Park Place Houston | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 3,221
Wholly Owned Properties - Residential | Post 510
Real Estate And Accumulated Depreciation [Line Items]
Location	Houston, TX
Initial Cost Land	$ 7,227
Initial Cost Buildings and Fixtures	33,366
Gross Amount, Land	7,227
Gross Amount, Buildings and Fixtures	34,297
Total	41,524
Accumulated Depreciation	(6,287)
Net	$ 35,237
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2014
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2016
Wholly Owned Properties - Residential | Post 510 | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 931
Wholly Owned Properties - Residential | Post at Afton Oaks
Real Estate And Accumulated Depreciation [Line Items]
Location	Houston, TX
Initial Cost Land	$ 11,503
Initial Cost Buildings and Fixtures	65,469
Gross Amount, Land	11,503
Gross Amount, Buildings and Fixtures	69,598
Total	81,101
Accumulated Depreciation	(14,474)
Net	$ 66,627
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2017
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2016
Wholly Owned Properties - Residential | Post at Afton Oaks | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 4,129
Wholly Owned Properties - Residential | Post Midtown Square
Real Estate And Accumulated Depreciation [Line Items]
Location	Houston, TX
Initial Cost Land	$ 19,038
Initial Cost Buildings and Fixtures	89,570
Gross Amount, Land	19,038
Gross Amount, Buildings and Fixtures	94,278
Total	113,316
Accumulated Depreciation	(16,178)
Net	$ 97,138
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2016
Wholly Owned Properties - Residential | Post Midtown Square | Phase I [Member]
Real Estate And Accumulated Depreciation [Line Items]
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1999
Wholly Owned Properties - Residential | Post Midtown Square | Phase II [Member]
Real Estate And Accumulated Depreciation [Line Items]
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2013
Wholly Owned Properties - Residential | Post Midtown Square | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 4,708
Wholly Owned Properties - Residential | Ranchstone
Real Estate And Accumulated Depreciation [Line Items]
Location	Houston, TX
Initial Cost Land	$ 1,480
Initial Cost Buildings and Fixtures	14,807
Gross Amount, Land	1,480
Gross Amount, Buildings and Fixtures	18,150
Total	19,630
Accumulated Depreciation	(8,367)
Net	$ 11,263
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1996
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2007
Wholly Owned Properties - Residential | Ranchstone | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 3,343
Wholly Owned Properties - Residential | Reserve at Woodwind Lakes
Real Estate And Accumulated Depreciation [Line Items]
Location	Houston, TX
Initial Cost Land	$ 1,968
Initial Cost Buildings and Fixtures	19,928
Gross Amount, Land	1,968
Gross Amount, Buildings and Fixtures	24,479
Total	26,447
Accumulated Depreciation	(11,956)
Net	$ 14,491
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1999
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2006
Wholly Owned Properties - Residential | Reserve at Woodwind Lakes | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 4,551
Wholly Owned Properties - Residential | Retreat at Vintage Park
Real Estate And Accumulated Depreciation [Line Items]
Location	Houston, TX
Initial Cost Land	$ 8,211
Initial Cost Buildings and Fixtures	40,352
Gross Amount, Land	8,211
Gross Amount, Buildings and Fixtures	42,056
Total	50,267
Accumulated Depreciation	(6,774)
Net	$ 43,493
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2014
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2014
Wholly Owned Properties - Residential | Retreat at Vintage Park | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 1,704
Wholly Owned Properties - Residential | Yale at 6th
Real Estate And Accumulated Depreciation [Line Items]
Location	Houston, TX
Initial Cost Land	$ 13,107
Initial Cost Buildings and Fixtures	62,764
Gross Amount, Land	13,107
Gross Amount, Buildings and Fixtures	64,873
Total	77,980
Accumulated Depreciation	(8,309)
Net	$ 69,671
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2015
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2016
Wholly Owned Properties - Residential | Yale at 6th | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 2,109
Wholly Owned Properties - Residential | Cascade at Fall Creek
Real Estate And Accumulated Depreciation [Line Items]
Location	Humble, TX
Initial Cost Land	$ 5,985
Initial Cost Buildings and Fixtures	40,011
Gross Amount, Land	5,985
Gross Amount, Buildings and Fixtures	43,610
Total	49,595
Accumulated Depreciation	(19,437)
Net	$ 30,158
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2007
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2007
Wholly Owned Properties - Residential | Cascade at Fall Creek | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 3,599
Wholly Owned Properties - Residential | Bella Casita
Real Estate And Accumulated Depreciation [Line Items]
Location	Irving, TX
Initial Cost Land	$ 2,521
Initial Cost Buildings and Fixtures	26,432
Gross Amount, Land	2,521
Gross Amount, Buildings and Fixtures	30,326
Total	32,847
Accumulated Depreciation	(10,396)
Net	$ 22,451
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2007
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2010
Wholly Owned Properties - Residential | Bella Casita | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 3,894
Wholly Owned Properties - Residential | Colonial Grand at Valley Ranch
Real Estate And Accumulated Depreciation [Line Items]
Location	Irving, TX
Initial Cost Land	$ 5,072
Initial Cost Buildings and Fixtures	37,397
Gross Amount, Land	5,072
Gross Amount, Buildings and Fixtures	51,184
Total	56,256
Accumulated Depreciation	(17,704)
Net	$ 38,552
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1997
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2013
Wholly Owned Properties - Residential | Colonial Grand at Valley Ranch | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 13,787
Wholly Owned Properties - Residential | Colonial Reserve at Las Colinas
Real Estate And Accumulated Depreciation [Line Items]
Location	Irving, TX
Initial Cost Land	$ 3,902
Initial Cost Buildings and Fixtures	40,691
Gross Amount, Land	3,902
Gross Amount, Buildings and Fixtures	43,102
Total	47,004
Accumulated Depreciation	(11,879)
Net	$ 35,125
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2006
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2013
Wholly Owned Properties - Residential | Colonial Reserve at Las Colinas | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 2,411
Wholly Owned Properties - Residential | Remington Hills
Real Estate And Accumulated Depreciation [Line Items]
Location	Irving, TX
Initial Cost Land	$ 4,390
Initial Cost Buildings and Fixtures	21,822
Gross Amount, Land	4,390
Gross Amount, Buildings and Fixtures	34,395
Total	38,785
Accumulated Depreciation	(10,890)
Net	$ 27,895
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1984
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2013
Wholly Owned Properties - Residential | Remington Hills | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 12,573
Wholly Owned Properties - Residential | Colonial Village at Oakbend
Real Estate And Accumulated Depreciation [Line Items]
Location	Lewisville, TX
Initial Cost Land	$ 5,598
Initial Cost Buildings and Fixtures	28,616
Gross Amount, Land	5,598
Gross Amount, Buildings and Fixtures	34,316
Total	39,914
Accumulated Depreciation	(11,122)
Net	$ 28,792
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1997
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2013
Wholly Owned Properties - Residential | Colonial Village at Oakbend | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 5,700
Wholly Owned Properties - Residential | Times Square at Craig Ranch
Real Estate And Accumulated Depreciation [Line Items]
Location	McKinney, TX
Initial Cost Land	$ 1,130
Initial Cost Buildings and Fixtures	28,058
Gross Amount, Land	1,130
Gross Amount, Buildings and Fixtures	33,716
Total	34,846
Accumulated Depreciation	(12,315)
Net	$ 22,531
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2009
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2010
Wholly Owned Properties - Residential | Times Square at Craig Ranch | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 5,658
Wholly Owned Properties - Residential | Venue at Stonebridge Ranch
Real Estate And Accumulated Depreciation [Line Items]
Location	McKinney, TX
Initial Cost Land	$ 4,034
Initial Cost Buildings and Fixtures	19,528
Gross Amount, Land	4,034
Gross Amount, Buildings and Fixtures	21,972
Total	26,006
Accumulated Depreciation	(5,556)
Net	$ 20,450
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2000
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2013
Wholly Owned Properties - Residential | Venue at Stonebridge Ranch | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 2,444
Wholly Owned Properties - Residential | Cityscape at Market Center
Real Estate And Accumulated Depreciation [Line Items]
Location	Plano, TX
Initial Cost Land	$ 16,894
Initial Cost Buildings and Fixtures	110,705
Gross Amount, Land	16,894
Gross Amount, Buildings and Fixtures	114,781
Total	131,675
Accumulated Depreciation	(17,834)
Net	$ 113,841
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2014
Wholly Owned Properties - Residential | Cityscape at Market Center | Phase I [Member]
Real Estate And Accumulated Depreciation [Line Items]
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2013
Wholly Owned Properties - Residential | Cityscape at Market Center | Phase II [Member]
Real Estate And Accumulated Depreciation [Line Items]
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2015
Wholly Owned Properties - Residential | Cityscape at Market Center | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 4,076
Wholly Owned Properties - Residential | Highwood
Real Estate And Accumulated Depreciation [Line Items]
Location	Plano, TX
Initial Cost Land	$ 864
Initial Cost Buildings and Fixtures	7,783
Gross Amount, Land	864
Gross Amount, Buildings and Fixtures	11,178
Total	12,042
Accumulated Depreciation	(7,906)
Net	$ 4,136
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1983
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 1998
Wholly Owned Properties - Residential | Highwood | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 3,395
Wholly Owned Properties - Residential | Los Rios Park
Real Estate And Accumulated Depreciation [Line Items]
Location	Plano, TX
Initial Cost Land	$ 3,273
Initial Cost Buildings and Fixtures	28,823
Gross Amount, Land	3,273
Gross Amount, Buildings and Fixtures	35,938
Total	39,211
Accumulated Depreciation	(20,443)
Net	$ 18,768
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2000
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2003
Wholly Owned Properties - Residential | Los Rios Park | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 7,115
Wholly Owned Properties - Residential | Boulder Ridge
Real Estate And Accumulated Depreciation [Line Items]
Location	Roanoke, TX
Initial Cost Land	$ 3,382
Initial Cost Buildings and Fixtures	26,930
Gross Amount, Land	3,382
Gross Amount, Buildings and Fixtures	33,980
Total	37,362
Accumulated Depreciation	(17,563)
Net	$ 19,799
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1999
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2005
Wholly Owned Properties - Residential | Boulder Ridge | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 7,050
Wholly Owned Properties - Residential | Copper Ridge
Real Estate And Accumulated Depreciation [Line Items]
Location	Roanoke, TX
Initial Cost Land	$ 3,336
Gross Amount, Land	3,336
Gross Amount, Buildings and Fixtures	22,762
Total	26,098
Accumulated Depreciation	(7,161)
Net	$ 18,937
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2009
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2008
Wholly Owned Properties - Residential | Copper Ridge | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 22,762
Wholly Owned Properties - Residential | Copper Ridge II
Real Estate And Accumulated Depreciation [Line Items]
Location	Roanoke, TX
Initial Cost Land	$ 830
Gross Amount, Land	830
Gross Amount, Buildings and Fixtures	25,427
Total	26,257
Accumulated Depreciation	(1,012)
Net	$ 25,245
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2020
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2008
Wholly Owned Properties - Residential | Copper Ridge II | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 25,427
Wholly Owned Properties - Residential | Colonial Grand at Ashton Oaks
Real Estate And Accumulated Depreciation [Line Items]
Location	Round Rock, TX
Initial Cost Land	$ 5,511
Initial Cost Buildings and Fixtures	36,241
Gross Amount, Land	5,511
Gross Amount, Buildings and Fixtures	38,902
Total	44,413
Accumulated Depreciation	(12,248)
Net	$ 32,165
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2009
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2013
Wholly Owned Properties - Residential | Colonial Grand at Ashton Oaks | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 2,661
Wholly Owned Properties - Residential | Colonial Grand at Round Rock
Real Estate And Accumulated Depreciation [Line Items]
Location	Round Rock, TX
Initial Cost Land	$ 4,691
Initial Cost Buildings and Fixtures	45,379
Gross Amount, Land	4,691
Gross Amount, Buildings and Fixtures	48,443
Total	53,134
Accumulated Depreciation	(14,797)
Net	$ 38,337
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1997
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2013
Wholly Owned Properties - Residential | Colonial Grand at Round Rock | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 3,064
Wholly Owned Properties - Residential | Colonial Village at Sierra Vista
Real Estate And Accumulated Depreciation [Line Items]
Location	Round Rock, TX
Initial Cost Land	$ 2,561
Initial Cost Buildings and Fixtures	16,488
Gross Amount, Land	2,561
Gross Amount, Buildings and Fixtures	20,778
Total	23,339
Accumulated Depreciation	(7,251)
Net	$ 16,088
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1999
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2013
Wholly Owned Properties - Residential | Colonial Village at Sierra Vista | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 4,290
Wholly Owned Properties - Residential | Alamo Ranch
Real Estate And Accumulated Depreciation [Line Items]
Location	San Antonio, TX
Initial Cost Land	$ 2,380
Initial Cost Buildings and Fixtures	26,982
Gross Amount, Land	2,380
Gross Amount, Buildings and Fixtures	30,140
Total	32,520
Accumulated Depreciation	(10,753)
Net	$ 21,767
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2009
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2011
Wholly Owned Properties - Residential | Alamo Ranch | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 3,158
Wholly Owned Properties - Residential | Bulverde Oaks
Real Estate And Accumulated Depreciation [Line Items]
Location	San Antonio, TX
Initial Cost Land	$ 4,257
Initial Cost Buildings and Fixtures	36,759
Gross Amount, Land	4,257
Gross Amount, Buildings and Fixtures	38,555
Total	42,812
Accumulated Depreciation	(6,544)
Net	$ 36,268
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2014
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2014
Wholly Owned Properties - Residential | Bulverde Oaks | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 1,796
Wholly Owned Properties - Residential | Haven at Blanco
Real Estate And Accumulated Depreciation [Line Items]
Location	San Antonio, TX
Initial Cost Land	$ 5,450
Initial Cost Buildings and Fixtures	45,958
Gross Amount, Land	5,411
Gross Amount, Buildings and Fixtures	49,898
Total	55,309
Accumulated Depreciation	(14,877)
Net	$ 40,432
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2010
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2012
Wholly Owned Properties - Residential | Haven at Blanco | Land
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ (39)
Wholly Owned Properties - Residential | Haven at Blanco | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 3,940
Wholly Owned Properties - Residential | Stone Ranch at Westover Hills
Real Estate And Accumulated Depreciation [Line Items]
Location	San Antonio, TX
Initial Cost Land	$ 4,000
Initial Cost Buildings and Fixtures	24,992
Gross Amount, Land	4,000
Gross Amount, Buildings and Fixtures	28,436
Total	32,436
Accumulated Depreciation	(10,973)
Net	$ 21,463
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2009
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2009
Wholly Owned Properties - Residential | Stone Ranch at Westover Hills | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 3,444
Wholly Owned Properties - Residential | Cypresswood Court
Real Estate And Accumulated Depreciation [Line Items]
Location	Spring, TX
Initial Cost Land	$ 576
Initial Cost Buildings and Fixtures	5,190
Gross Amount, Land	576
Gross Amount, Buildings and Fixtures	10,066
Total	10,642
Accumulated Depreciation	(6,274)
Net	$ 4,368
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1984
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 1994
Wholly Owned Properties - Residential | Cypresswood Court | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 4,876
Wholly Owned Properties - Residential | Villages at Kirkwood
Real Estate And Accumulated Depreciation [Line Items]
Location	Stafford, TX
Initial Cost Land	$ 1,918
Initial Cost Buildings and Fixtures	15,846
Gross Amount, Land	1,918
Gross Amount, Buildings and Fixtures	19,106
Total	21,024
Accumulated Depreciation	(10,306)
Net	$ 10,718
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1996
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2004
Wholly Owned Properties - Residential | Villages at Kirkwood | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 3,260
Wholly Owned Properties - Residential | Green Tree Place
Real Estate And Accumulated Depreciation [Line Items]
Location	Woodlands, TX
Initial Cost Land	$ 539
Initial Cost Buildings and Fixtures	4,850
Gross Amount, Land	539
Gross Amount, Buildings and Fixtures	8,647
Total	9,186
Accumulated Depreciation	(6,452)
Net	$ 2,734
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1984
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 1994
Wholly Owned Properties - Residential | Green Tree Place | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 3,797
Wholly Owned Properties - Residential | Stonefield Commons
Real Estate And Accumulated Depreciation [Line Items]
Location	Charlottesville, VA
Initial Cost Land	$ 11,044
Initial Cost Buildings and Fixtures	36,689
Gross Amount, Land	11,044
Gross Amount, Buildings and Fixtures	38,428
Total	49,472
Accumulated Depreciation	(6,655)
Net	$ 42,817
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2013
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2014
Wholly Owned Properties - Residential | Stonefield Commons | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 1,739
Wholly Owned Properties - Residential | Adalay Bay
Real Estate And Accumulated Depreciation [Line Items]
Location	Chesapeake, VA
Initial Cost Land	$ 5,280
Initial Cost Buildings and Fixtures	31,341
Gross Amount, Land	5,280
Gross Amount, Buildings and Fixtures	35,205
Total	40,485
Accumulated Depreciation	(11,284)
Net	$ 29,201
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2002
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2012
Wholly Owned Properties - Residential | Adalay Bay | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 3,864
Wholly Owned Properties - Residential | Apartments at Cobblestone Square
Real Estate And Accumulated Depreciation [Line Items]
Location	Fredericksburg, VA
Initial Cost Land	$ 10,990
Initial Cost Buildings and Fixtures	48,696
Gross Amount, Land	10,990
Gross Amount, Buildings and Fixtures	51,731
Total	62,721
Accumulated Depreciation	(9,495)
Net	$ 53,226
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2012
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2016
Wholly Owned Properties - Residential | Apartments at Cobblestone Square | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 3,035
Wholly Owned Properties - Residential | Colonial Village at Greenbrier
Real Estate And Accumulated Depreciation [Line Items]
Location	Fredericksburg, VA
Initial Cost Land	$ 4,842
Initial Cost Buildings and Fixtures	21,677
Gross Amount, Land	4,842
Gross Amount, Buildings and Fixtures	24,603
Total	29,445
Accumulated Depreciation	(6,988)
Net	$ 22,457
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1980
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2013
Wholly Owned Properties - Residential | Colonial Village at Greenbrier | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 2,926
Wholly Owned Properties - Residential | Seasons at Celebrate Virginia
Real Estate And Accumulated Depreciation [Line Items]
Location	Fredericksburg, VA
Initial Cost Land	$ 14,490
Initial Cost Buildings and Fixtures	32,083
Gross Amount, Land	14,490
Gross Amount, Buildings and Fixtures	72,659
Total	87,149
Accumulated Depreciation	(17,743)
Net	$ 69,406
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2011
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2011
Wholly Owned Properties - Residential | Seasons at Celebrate Virginia | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 40,576
Wholly Owned Properties - Residential | Station Square at Cosner's Corner
Real Estate And Accumulated Depreciation [Line Items]
Location	Fredericksburg, VA
Initial Cost Land	$ 12,825
Initial Cost Buildings and Fixtures	51,078
Gross Amount, Land	12,825
Gross Amount, Buildings and Fixtures	52,973
Total	65,798
Accumulated Depreciation	(9,454)
Net	$ 56,344
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2013
Wholly Owned Properties - Residential | Station Square at Cosner's Corner | Phase I [Member]
Real Estate And Accumulated Depreciation [Line Items]
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2013
Wholly Owned Properties - Residential | Station Square at Cosner's Corner | Phase II [Member]
Real Estate And Accumulated Depreciation [Line Items]
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2016
Wholly Owned Properties - Residential | Station Square at Cosner's Corner | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 1,895
Wholly Owned Properties - Residential | Colonial Village at Hampton Glen
Real Estate And Accumulated Depreciation [Line Items]
Location	Glen Allen, VA
Initial Cost Land	$ 4,851
Initial Cost Buildings and Fixtures	21,678
Gross Amount, Land	4,851
Gross Amount, Buildings and Fixtures	25,568
Total	30,419
Accumulated Depreciation	(7,916)
Net	$ 22,503
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1986
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2013
Wholly Owned Properties - Residential | Colonial Village at Hampton Glen | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 3,890
Wholly Owned Properties - Residential | Colonial Village At West End
Real Estate And Accumulated Depreciation [Line Items]
Location	Glen Allen, VA
Initial Cost Land	$ 4,661
Initial Cost Buildings and Fixtures	18,908
Gross Amount, Land	4,661
Gross Amount, Buildings and Fixtures	22,111
Total	26,772
Accumulated Depreciation	(6,900)
Net	$ 19,872
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1987
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2013
Wholly Owned Properties - Residential | Colonial Village At West End | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 3,203
Wholly Owned Properties - Residential | Township
Real Estate And Accumulated Depreciation [Line Items]
Location	Hampton, VA
Initial Cost Land	$ 1,509
Initial Cost Buildings and Fixtures	8,189
Gross Amount, Land	1,509
Gross Amount, Buildings and Fixtures	16,799
Total	18,308
Accumulated Depreciation	(11,803)
Net	$ 6,505
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1987
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 1995
Wholly Owned Properties - Residential | Township | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 8,610
Wholly Owned Properties - Residential | Colonial Village At Waterford
Real Estate And Accumulated Depreciation [Line Items]
Location	Midlothian, VA
Initial Cost Land	$ 6,733
Initial Cost Buildings and Fixtures	29,221
Gross Amount, Land	6,733
Gross Amount, Buildings and Fixtures	34,488
Total	41,221
Accumulated Depreciation	(11,295)
Net	$ 29,926
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1989
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2013
Wholly Owned Properties - Residential | Colonial Village At Waterford | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 5,267
Wholly Owned Properties - Residential | Radius
Real Estate And Accumulated Depreciation [Line Items]
Location	Newport News, VA
Initial Cost Land	$ 5,040
Initial Cost Buildings and Fixtures	36,481
Gross Amount, Land	5,040
Gross Amount, Buildings and Fixtures	39,996
Total	45,036
Accumulated Depreciation	(6,344)
Net	$ 38,692
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2012
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2015
Wholly Owned Properties - Residential | Radius | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 3,515
Wholly Owned Properties - Residential | Ashley Park
Real Estate And Accumulated Depreciation [Line Items]
Location	Richmond, VA
Initial Cost Land	$ 4,761
Initial Cost Buildings and Fixtures	13,365
Gross Amount, Land	4,761
Gross Amount, Buildings and Fixtures	16,325
Total	21,086
Accumulated Depreciation	(5,791)
Net	$ 15,295
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1988
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2013
Wholly Owned Properties - Residential | Ashley Park | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 2,960
Wholly Owned Properties - Residential | Colonial Village At Chase Gayton
Real Estate And Accumulated Depreciation [Line Items]
Location	Richmond, VA
Initial Cost Land	$ 6,021
Initial Cost Buildings and Fixtures	29,004
Gross Amount, Land	6,021
Gross Amount, Buildings and Fixtures	33,213
Total	39,234
Accumulated Depreciation	(10,660)
Net	$ 28,574
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1984
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2013
Wholly Owned Properties - Residential | Colonial Village At Chase Gayton | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 4,209
Wholly Owned Properties - Residential | Hamptons At Hunton Park
Real Estate And Accumulated Depreciation [Line Items]
Location	Richmond, VA
Initial Cost Land	$ 4,930
Initial Cost Buildings and Fixtures	35,598
Gross Amount, Land	4,930
Gross Amount, Buildings and Fixtures	41,868
Total	46,798
Accumulated Depreciation	(13,740)
Net	$ 33,058
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2003
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2011
Wholly Owned Properties - Residential | Hamptons At Hunton Park | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 6,270
Wholly Owned Properties - Residential | Retreat At West Creek
Real Estate And Accumulated Depreciation [Line Items]
Location	Richmond, VA
Initial Cost Land	$ 7,112
Initial Cost Buildings and Fixtures	36,136
Gross Amount, Land	7,112
Gross Amount, Buildings and Fixtures	38,947
Total	46,059
Accumulated Depreciation	(5,868)
Net	$ 40,191
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2015
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2015
Wholly Owned Properties - Residential | Retreat At West Creek | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 2,811
Wholly Owned Properties - Residential | Retreat At West Creek I I
Real Estate And Accumulated Depreciation [Line Items]
Location	Richmond, VA
Initial Cost Land	$ 3,000
Gross Amount, Land	3,000
Gross Amount, Buildings and Fixtures	12,242
Total	15,242
Accumulated Depreciation	(1,165)
Net	$ 14,077
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2017
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2015
Wholly Owned Properties - Residential | Retreat At West Creek I I | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 12,242
Wholly Owned Properties - Residential | Post Carlyle Square
Real Estate And Accumulated Depreciation [Line Items]
Location	Washington D.C.
Initial Cost Land	$ 29,728
Initial Cost Buildings and Fixtures	154,309
Gross Amount, Land	29,728
Gross Amount, Buildings and Fixtures	158,335
Total	188,063
Accumulated Depreciation	(24,500)
Net	$ 163,563
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2016
Wholly Owned Properties - Residential | Post Carlyle Square | Phase I [Member]
Real Estate And Accumulated Depreciation [Line Items]
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2006
Wholly Owned Properties - Residential | Post Carlyle Square | Phase II [Member]
Real Estate And Accumulated Depreciation [Line Items]
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2013
Wholly Owned Properties - Residential | Post Carlyle Square | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 4,026
Wholly Owned Properties - Residential | Post Corners At Trinity Center
Real Estate And Accumulated Depreciation [Line Items]
Location	Washington D.C.
Initial Cost Land	$ 7,664
Initial Cost Buildings and Fixtures	70,012
Gross Amount, Land	7,664
Gross Amount, Buildings and Fixtures	72,430
Total	80,094
Accumulated Depreciation	(11,401)
Net	$ 68,693
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1996
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2016
Wholly Owned Properties - Residential | Post Corners At Trinity Center | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 2,418
Wholly Owned Properties - Residential | Post Fallsgrove
Real Estate And Accumulated Depreciation [Line Items]
Location	Washington D.C.
Initial Cost Land	$ 17,524
Initial Cost Buildings and Fixtures	58,896
Gross Amount, Land	17,524
Gross Amount, Buildings and Fixtures	62,573
Total	80,097
Accumulated Depreciation	(10,264)
Net	$ 69,833
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2003
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2016
Wholly Owned Properties - Residential | Post Fallsgrove | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 3,677
Wholly Owned Properties - Residential | Post Park
Real Estate And Accumulated Depreciation [Line Items]
Location	Washington D.C.
Initial Cost Land	$ 5,355
Initial Cost Buildings and Fixtures	79,842
Gross Amount, Land	5,355
Gross Amount, Buildings and Fixtures	82,394
Total	87,749
Accumulated Depreciation	(16,666)
Net	$ 71,083
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2010
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2016
Wholly Owned Properties - Residential | Post Park | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 2,552
Wholly Owned Properties - Residential | Post Pentagon Row
Real Estate And Accumulated Depreciation [Line Items]
Location	Washington D.C.
Initial Cost Land	$ 30,452
Initial Cost Buildings and Fixtures	125,091
Gross Amount, Land	30,452
Gross Amount, Buildings and Fixtures	136,451
Total	166,903
Accumulated Depreciation	(21,740)
Net	$ 145,163
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2001
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2016
Wholly Owned Properties - Residential | Post Pentagon Row | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 11,360
Wholly Owned Properties - Residential | Post Tysons Corner
Real Estate And Accumulated Depreciation [Line Items]
Location	Washington D.C.
Initial Cost Land	$ 30,776
Initial Cost Buildings and Fixtures	82,021
Gross Amount, Land	30,776
Gross Amount, Buildings and Fixtures	87,152
Total	117,928
Accumulated Depreciation	(13,561)
Net	$ 104,367
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1990
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2016
Wholly Owned Properties - Residential | Post Tysons Corner | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 5,131
Retail Properties | The Denton [Member]
Real Estate And Accumulated Depreciation [Line Items]
Location	Kansas City, MO
Initial Cost Land	$ 700
Initial Cost Buildings and Fixtures	4,439
Gross Amount, Land	700
Gross Amount, Buildings and Fixtures	5,170
Total	5,870
Accumulated Depreciation	(808)
Net	$ 5,062
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2014
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2015
Retail Properties | The Denton [Member] | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 731
Retail Properties | The Greene [Member]
Real Estate And Accumulated Depreciation [Line Items]
Location	Greenville, SC
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2019
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2019
Retail Properties | Colonial Promenade at Huntsville Retail
Real Estate And Accumulated Depreciation [Line Items]
Location	Huntsville, AL
Initial Cost Land	$ 1,748
Gross Amount, Land	448
Total	448
Net	$ 448
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2017
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2013
Retail Properties | Colonial Promenade at Huntsville Retail | Land
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ (1,300)
Retail Properties | 220 Riverside Retail
Real Estate And Accumulated Depreciation [Line Items]
Location	Jacksonville, FL
Initial Cost Land	$ 119
Initial Cost Buildings and Fixtures	2,902
Gross Amount, Land	119
Gross Amount, Buildings and Fixtures	3,133
Total	3,252
Accumulated Depreciation	(149)
Net	$ 3,103
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2015
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2019
Retail Properties | 220 Riverside Retail | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 231
Retail Properties | Post Parkside Orlando Retail
Real Estate And Accumulated Depreciation [Line Items]
Location	Orlando, FL
Initial Cost Land	$ 742
Initial Cost Buildings and Fixtures	11,924
Gross Amount, Land	742
Gross Amount, Buildings and Fixtures	13,137
Total	13,879
Accumulated Depreciation	(2,131)
Net	$ 11,748
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1999
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2016
Retail Properties | Post Parkside Orlando Retail | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 1,213
Retail Properties | Post Harbour Place Retail
Real Estate And Accumulated Depreciation [Line Items]
Location	Tampa, FL
Initial Cost Land	$ 386
Initial Cost Buildings and Fixtures	4,315
Gross Amount, Land	386
Gross Amount, Buildings and Fixtures	4,676
Total	5,062
Accumulated Depreciation	(738)
Net	$ 4,324
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1997
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2016
Retail Properties | Post Harbour Place Retail | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 361
Retail Properties | Post Rocky Point Retail
Real Estate And Accumulated Depreciation [Line Items]
Location	Tampa, FL
Initial Cost Land	$ 34
Initial Cost Buildings and Fixtures	51
Gross Amount, Land	34
Gross Amount, Buildings and Fixtures	449
Total	483
Accumulated Depreciation	(147)
Net	$ 336
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2016
Retail Properties | Post Rocky Point Retail | Phase I [Member]
Real Estate And Accumulated Depreciation [Line Items]
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1994
Retail Properties | Post Rocky Point Retail | Phase II [Member]
Real Estate And Accumulated Depreciation [Line Items]
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1996
Retail Properties | Post Rocky Point Retail | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 398
Retail Properties | Post Soho Square Retail
Real Estate And Accumulated Depreciation [Line Items]
Location	Tampa, FL
Initial Cost Land	$ 268
Initial Cost Buildings and Fixtures	4,033
Gross Amount, Land	268
Gross Amount, Buildings and Fixtures	4,046
Total	4,314
Accumulated Depreciation	(893)
Net	$ 3,421
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2012
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2016
Retail Properties | Post Soho Square Retail | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 13
Retail Properties | M A A Buckhead Retail
Real Estate And Accumulated Depreciation [Line Items]
Location	Atlanta, GA
Initial Cost Land	$ 867
Initial Cost Buildings and Fixtures	3,465
Gross Amount, Land	867
Gross Amount, Buildings and Fixtures	4,267
Total	5,134
Accumulated Depreciation	(1,077)
Net	$ 4,057
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2012
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2012
Retail Properties | M A A Buckhead Retail | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 802
Retail Properties | M A A Piedmont Park Retail
Real Estate And Accumulated Depreciation [Line Items]
Location	Atlanta, GA
Initial Cost Land	$ 426
Initial Cost Buildings and Fixtures	1,089
Gross Amount, Land	426
Gross Amount, Buildings and Fixtures	1,110
Total	1,536
Accumulated Depreciation	(195)
Net	$ 1,341
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1999
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2016
Retail Properties | M A A Piedmont Park Retail | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 21
Retail Properties | M A A Riverside Office
Real Estate And Accumulated Depreciation [Line Items]
Location	Atlanta, GA
Initial Cost Land	$ 9,680
Initial Cost Buildings and Fixtures	22,108
Gross Amount, Land	9,680
Gross Amount, Buildings and Fixtures	31,215
Total	40,895
Accumulated Depreciation	(6,079)
Net	$ 34,816
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1996
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2016
Retail Properties | M A A Riverside Office | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 9,107
Retail Properties | M A A Riverside Retail
Real Estate And Accumulated Depreciation [Line Items]
Location	Atlanta, GA
Initial Cost Land	$ 889
Initial Cost Buildings and Fixtures	2,340
Gross Amount, Land	889
Gross Amount, Buildings and Fixtures	4,914
Total	5,803
Accumulated Depreciation	(694)
Net	$ 5,109
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1996
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2016
Retail Properties | M A A Riverside Retail | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 2,574
Retail Properties | Post Training Facility
Real Estate And Accumulated Depreciation [Line Items]
Location	Atlanta, GA
Initial Cost Land	$ 1,092
Initial Cost Buildings and Fixtures	968
Gross Amount, Land	1,092
Gross Amount, Buildings and Fixtures	1,000
Total	2,092
Accumulated Depreciation	(325)
Net	$ 1,767
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1999
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2016
Retail Properties | Post Training Facility | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 32
Retail Properties | M A A West Village Retail
Real Estate And Accumulated Depreciation [Line Items]
Location	Smyrna, GA
Initial Cost Land	$ 2,500
Initial Cost Buildings and Fixtures	8,446
Gross Amount, Land	3,408
Gross Amount, Buildings and Fixtures	9,946
Total	13,354
Accumulated Depreciation	(2,109)
Net	$ 11,245
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2012
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2014
Retail Properties | M A A West Village Retail | Land
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 908
Retail Properties | M A A West Village Retail | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 1,500
Retail Properties | M A A1225 Retail
Real Estate And Accumulated Depreciation [Line Items]
Location	Charlotte, NC
Initial Cost Land	$ 43
Initial Cost Buildings and Fixtures	199
Gross Amount, Land	52
Gross Amount, Buildings and Fixtures	441
Total	493
Accumulated Depreciation	(157)
Net	$ 336
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2010
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2010
Retail Properties | M A A1225 Retail | Land
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 9
Retail Properties | M A A1225 Retail | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 242
Retail Properties | M A A Gateway Retail
Real Estate And Accumulated Depreciation [Line Items]
Location	Charlotte, NC
Initial Cost Land	$ 318
Initial Cost Buildings and Fixtures	1,430
Gross Amount, Land	318
Gross Amount, Buildings and Fixtures	1,456
Total	1,774
Accumulated Depreciation	(280)
Net	$ 1,494
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2000
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2016
Retail Properties | M A A Gateway Retail | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 26
Retail Properties | M A A South Line Retail
Real Estate And Accumulated Depreciation [Line Items]
Location	Charlotte, NC
Initial Cost Land	$ 470
Initial Cost Buildings and Fixtures	1,289
Gross Amount, Land	470
Gross Amount, Buildings and Fixtures	1,411
Total	1,881
Accumulated Depreciation	(271)
Net	$ 1,610
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2009
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2016
Retail Properties | M A A South Line Retail | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 122
Retail Properties | M A A Uptown Retail
Real Estate And Accumulated Depreciation [Line Items]
Location	Charlotte, NC
Initial Cost Land	$ 319
Initial Cost Buildings and Fixtures	1,144
Gross Amount, Land	319
Gross Amount, Buildings and Fixtures	1,155
Total	1,474
Accumulated Depreciation	(199)
Net	$ 1,275
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1998
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2016
Retail Properties | M A A Uptown Retail | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 11
Retail Properties | Post Uptown Leasing Center
Real Estate And Accumulated Depreciation [Line Items]
Location	Charlotte, NC
Initial Cost Land	$ 1,290
Initial Cost Buildings and Fixtures	1,488
Gross Amount, Land	1,290
Gross Amount, Buildings and Fixtures	1,634
Total	2,924
Accumulated Depreciation	(258)
Net	$ 2,666
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1998
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2016
Retail Properties | Post Uptown Leasing Center | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 146
Retail Properties | Hue Retail
Real Estate And Accumulated Depreciation [Line Items]
Location	Raleigh, NC
Initial Cost Buildings and Fixtures	$ 2,129
Gross Amount, Buildings and Fixtures	2,193
Total	2,193
Accumulated Depreciation	(177)
Net	$ 2,016
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2010
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2018
Retail Properties | Hue Retail | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 64
Retail Properties | Post Parkside At Wade Retail
Real Estate And Accumulated Depreciation [Line Items]
Location	Raleigh, NC
Initial Cost Land	$ 317
Initial Cost Buildings and Fixtures	4,552
Gross Amount, Land	317
Gross Amount, Buildings and Fixtures	4,636
Total	4,953
Accumulated Depreciation	(1,009)
Net	$ 3,944
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2011
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2016
Retail Properties | Post Parkside At Wade Retail | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 84
Retail Properties | Post South Lamar Retail
Real Estate And Accumulated Depreciation [Line Items]
Location	Austin, TX
Initial Cost Land	$ 421
Initial Cost Buildings and Fixtures	3,072
Gross Amount, Land	421
Gross Amount, Buildings and Fixtures	3,646
Total	4,067
Accumulated Depreciation	(567)
Net	$ 3,500
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2011
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2016
Retail Properties | Post South Lamar Retail | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 574
Retail Properties | M A A Frisco Bridges Retail
Real Estate And Accumulated Depreciation [Line Items]
Location	Dallas, TX
Initial Cost Land	$ 779
Initial Cost Buildings and Fixtures	6,593
Gross Amount, Land	779
Gross Amount, Buildings and Fixtures	7,261
Total	8,040
Accumulated Depreciation	(1,335)
Net	$ 6,705
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2009
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2016
Retail Properties | M A A Frisco Bridges Retail | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 668
Retail Properties | M A A Mc Kinney Avenue Retail
Real Estate And Accumulated Depreciation [Line Items]
Location	Dallas, TX
Initial Cost Land	$ 1,581
Initial Cost Buildings and Fixtures	5,982
Gross Amount, Land	1,581
Gross Amount, Buildings and Fixtures	6,267
Total	7,848
Accumulated Depreciation	(1,052)
Net	$ 6,796
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1996
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2016
Retail Properties | M A A Mc Kinney Avenue Retail | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 285
Retail Properties | M A A Worthington Retail
Real Estate And Accumulated Depreciation [Line Items]
Location	Dallas, TX
Initial Cost Land	$ 108
Initial Cost Buildings and Fixtures	495
Gross Amount, Land	108
Gross Amount, Buildings and Fixtures	865
Total	973
Accumulated Depreciation	(107)
Net	$ 866
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2016
Retail Properties | M A A Worthington Retail | Phase I [Member]
Real Estate And Accumulated Depreciation [Line Items]
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1993
Retail Properties | M A A Worthington Retail | Phase II [Member]
Real Estate And Accumulated Depreciation [Line Items]
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2008
Retail Properties | M A A Worthington Retail | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 370
Retail Properties | Post Addison Circle Office
Real Estate And Accumulated Depreciation [Line Items]
Location	Dallas, TX
Initial Cost Land	$ 1,395
Initial Cost Buildings and Fixtures	4,280
Gross Amount, Land	1,395
Gross Amount, Buildings and Fixtures	5,108
Total	6,503
Accumulated Depreciation	(1,257)
Net	$ 5,246
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2016
Retail Properties | Post Addison Circle Office | Phase I [Member]
Real Estate And Accumulated Depreciation [Line Items]
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1998
Retail Properties | Post Addison Circle Office | Phase II [Member]
Real Estate And Accumulated Depreciation [Line Items]
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2000
Retail Properties | Post Addison Circle Office | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 828
Retail Properties | Post Addison Circle Retail
Real Estate And Accumulated Depreciation [Line Items]
Location	Dallas, TX
Initial Cost Land	$ 448
Initial Cost Buildings and Fixtures	21,386
Gross Amount, Land	448
Gross Amount, Buildings and Fixtures	23,337
Total	23,785
Accumulated Depreciation	(4,583)
Net	$ 19,202
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2016
Retail Properties | Post Addison Circle Retail | Phase I [Member]
Real Estate And Accumulated Depreciation [Line Items]
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1998
Retail Properties | Post Addison Circle Retail | Phase II [Member]
Real Estate And Accumulated Depreciation [Line Items]
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2000
Retail Properties | Post Addison Circle Retail | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 1,951
Retail Properties | Post Coles Corner Retail
Real Estate And Accumulated Depreciation [Line Items]
Location	Dallas, TX
Initial Cost Land	$ 347
Initial Cost Buildings and Fixtures	716
Gross Amount, Land	347
Gross Amount, Buildings and Fixtures	791
Total	1,138
Accumulated Depreciation	(159)
Net	$ 979
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1998
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2016
Retail Properties | Post Coles Corner Retail | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 75
Retail Properties | Post Eastside Retail
Real Estate And Accumulated Depreciation [Line Items]
Location	Dallas, TX
Initial Cost Land	$ 682
Initial Cost Buildings and Fixtures	10,645
Gross Amount, Land	682
Gross Amount, Buildings and Fixtures	11,042
Total	11,724
Accumulated Depreciation	(1,866)
Net	$ 9,858
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2008
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2016
Retail Properties | Post Eastside Retail | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 397
Retail Properties | Post Heights Retail
Real Estate And Accumulated Depreciation [Line Items]
Location	Dallas, TX
Initial Cost Land	$ 1,066
Initial Cost Buildings and Fixtures	3,314
Gross Amount, Land	1,066
Gross Amount, Buildings and Fixtures	3,466
Total	4,532
Accumulated Depreciation	(615)
Net	$ 3,917
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1997
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2016
Retail Properties | Post Heights Retail | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 152
Retail Properties | Post Katy Trail Retail
Real Estate And Accumulated Depreciation [Line Items]
Location	Dallas, TX
Initial Cost Land	$ 465
Initial Cost Buildings and Fixtures	4,883
Gross Amount, Land	465
Gross Amount, Buildings and Fixtures	4,964
Total	5,429
Accumulated Depreciation	(783)
Net	$ 4,646
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2010
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2016
Retail Properties | Post Katy Trail Retail | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 81
Retail Properties | Post Legacy Retail
Real Estate And Accumulated Depreciation [Line Items]
Location	Dallas, TX
Initial Cost Land	$ 150
Initial Cost Buildings and Fixtures	3,334
Gross Amount, Land	150
Gross Amount, Buildings and Fixtures	3,712
Total	3,862
Accumulated Depreciation	(569)
Net	$ 3,293
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2000
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2016
Retail Properties | Post Legacy Retail | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 378
Retail Properties | Post Midtown Square Retail
Real Estate And Accumulated Depreciation [Line Items]
Location	Houston, TX
Initial Cost Land	$ 1,327
Initial Cost Buildings and Fixtures	16,005
Gross Amount, Land	1,327
Gross Amount, Buildings and Fixtures	16,377
Total	17,704
Accumulated Depreciation	(2,614)
Net	$ 15,090
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2016
Retail Properties | Post Midtown Square Retail | Phase I [Member]
Real Estate And Accumulated Depreciation [Line Items]
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1993
Retail Properties | Post Midtown Square Retail | Phase II [Member]
Real Estate And Accumulated Depreciation [Line Items]
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2013
Retail Properties | Post Midtown Square Retail | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 372
Retail Properties | Rise Condo Devel L P Retail
Real Estate And Accumulated Depreciation [Line Items]
Location	Houston, TX
Initial Cost Buildings and Fixtures	$ 2,280
Gross Amount, Buildings and Fixtures	2,336
Total	2,336
Accumulated Depreciation	(397)
Net	$ 1,939
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2016
Retail Properties | Rise Condo Devel L P Retail | Phase I [Member]
Real Estate And Accumulated Depreciation [Line Items]
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 1993
Retail Properties | Rise Condo Devel L P Retail | Phase II [Member]
Real Estate And Accumulated Depreciation [Line Items]
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2013
Retail Properties | Rise Condo Devel L P Retail | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 56
Retail Properties | Bella Casita At Las Colinas Retail
Real Estate And Accumulated Depreciation [Line Items]
Location	Irving, TX
Initial Cost Land	$ 46
Initial Cost Buildings and Fixtures	186
Gross Amount, Land	46
Gross Amount, Buildings and Fixtures	362
Total	408
Accumulated Depreciation	(118)
Net	$ 290
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2007
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2010
Retail Properties | Bella Casita At Las Colinas Retail | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 176
Retail Properties | Times Square At Craig Ranch Retail
Real Estate And Accumulated Depreciation [Line Items]
Location	McKinney, TX
Initial Cost Land	$ 253
Initial Cost Buildings and Fixtures	1,310
Gross Amount, Land	253
Gross Amount, Buildings and Fixtures	5,320
Total	5,573
Accumulated Depreciation	(940)
Net	$ 4,633
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2009
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2010
Retail Properties | Times Square At Craig Ranch Retail | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 4,010
Retail Properties | Post Carlyle Square Retail
Real Estate And Accumulated Depreciation [Line Items]
Location	Washington D.C.
Initial Cost Land	$ 1,048
Initial Cost Buildings and Fixtures	7,930
Gross Amount, Land	1,048
Gross Amount, Buildings and Fixtures	7,987
Total	9,035
Accumulated Depreciation	(1,315)
Net	$ 7,720
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2016
Retail Properties | Post Carlyle Square Retail | Phase I [Member]
Real Estate And Accumulated Depreciation [Line Items]
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2006
Retail Properties | Post Carlyle Square Retail | Phase II [Member]
Real Estate And Accumulated Depreciation [Line Items]
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2016
Retail Properties | Post Carlyle Square Retail | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 57
Retail Properties | Post Park Maryland Retail
Real Estate And Accumulated Depreciation [Line Items]
Location	Washington D.C.
Initial Cost Land	$ 25
Initial Cost Buildings and Fixtures	137
Gross Amount, Land	25
Gross Amount, Buildings and Fixtures	137
Total	162
Accumulated Depreciation	(19)
Net	$ 143
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date of Construction	Dec. 31, 2007
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2016
Retail Properties | Total Retail Commercial Properties
Real Estate And Accumulated Depreciation [Line Items]
Initial Cost Land	$ 32,349
Initial Cost Buildings and Fixtures	170,859
Gross Amount, Land	31,966
Gross Amount, Buildings and Fixtures	198,967
Total	230,933
Accumulated Depreciation	(35,992)
Net	194,941
Retail Properties | Total Retail Commercial Properties | Land
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	(383)
Retail Properties | Total Retail Commercial Properties | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 28,108
Development Properties [Member] | Novel Val Vista [Member]
Real Estate And Accumulated Depreciation [Line Items]
Location	Gilbert, AZ
Gross Amount, Land	$ 7,284
Gross Amount, Buildings and Fixtures	5,670
Total	12,954
Net	$ 12,954
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2020
Development Properties [Member] | Novel Val Vista [Member] | Land
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 7,284
Development Properties [Member] | Novel Val Vista [Member] | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 5,670
Development Properties [Member] | Novel Midtown
Real Estate And Accumulated Depreciation [Line Items]
Location	Phoenix, AZ
Initial Cost Land	$ 9,381
Gross Amount, Land	9,381
Gross Amount, Buildings and Fixtures	62,922
Total	72,303
Net	$ 72,303
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2019
Development Properties [Member] | Novel Midtown | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 62,922
Development Properties [Member] | MAA Frisco Bridges II
Real Estate And Accumulated Depreciation [Line Items]
Location	Dallas, TX
Initial Cost Land	$ 6,100
Gross Amount, Land	6,100
Gross Amount, Buildings and Fixtures	59,145
Total	65,245
Accumulated Depreciation	(1,049)
Net	$ 64,196
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2016
Development Properties [Member] | MAA Frisco Bridges II | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 59,145
Development Properties [Member] | M A A Westglenn
Real Estate And Accumulated Depreciation [Line Items]
Location	Denver, CO
Initial Cost Land	$ 8,077
Gross Amount, Land	8,077
Gross Amount, Buildings and Fixtures	39,715
Total	47,792
Net	$ 47,792
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2018
Development Properties [Member] | M A A Westglenn | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 39,715
Development Properties [Member] | M A A Robinson
Real Estate And Accumulated Depreciation [Line Items]
Location	Orlando, FL
Initial Cost Land	$ 6,004
Gross Amount, Land	6,004
Gross Amount, Buildings and Fixtures	62,714
Total	68,718
Net	$ 68,718
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2018
Development Properties [Member] | M A A Robinson | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 62,714
Development Properties [Member] | MAA Windmill Hill [Member]
Real Estate And Accumulated Depreciation [Line Items]
Location	Austin, TX
Gross Amount, Land	$ 5,006
Gross Amount, Buildings and Fixtures	5,131
Total	10,137
Net	$ 10,137
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2020
Development Properties [Member] | MAA Windmill Hill [Member] | Land
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 5,006
Development Properties [Member] | MAA Windmill Hill [Member] | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 5,131
Development Properties [Member] | Sand Lake
Real Estate And Accumulated Depreciation [Line Items]
Location	Orlando, FL
Initial Cost Land	$ 7,704
Gross Amount, Land	7,635
Gross Amount, Buildings and Fixtures	35,224
Total	42,859
Net	$ 42,859
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2019
Development Properties [Member] | Sand Lake | Land
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ (69)
Development Properties [Member] | Sand Lake | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 35,224
Development Properties [Member] | Longpoint
Real Estate And Accumulated Depreciation [Line Items]
Location	Houston, TX
Initial Cost Land	$ 9,031
Gross Amount, Land	9,031
Gross Amount, Buildings and Fixtures	22,206
Total	31,237
Net	$ 31,237
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired	Dec. 31, 2018
Development Properties [Member] | Longpoint | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 22,206
Development Properties [Member] | Total Active Development Properties
Real Estate And Accumulated Depreciation [Line Items]
Initial Cost Land	46,297
Gross Amount, Land	58,518
Gross Amount, Buildings and Fixtures	292,727
Total	351,245
Accumulated Depreciation	(1,049)
Net	350,196
Development Properties [Member] | Total Active Development Properties | Land
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	12,221
Development Properties [Member] | Total Active Development Properties | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	292,727
Real Estate [Member] | Total Properties
Real Estate And Accumulated Depreciation [Line Items]
Encumbrances	6,588
Initial Cost Land	1,899,554
Initial Cost Buildings and Fixtures	10,112,798
Gross Amount, Land	1,916,609
Gross Amount, Buildings and Fixtures	12,315,534
Total	14,232,143
Accumulated Depreciation	(3,397,690)
Net	10,834,453
Real Estate [Member] | Total Properties | Land
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	17,055
Real Estate [Member] | Total Properties | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	2,202,736
Land Improvements | Total Land Held For Future Developments
Real Estate And Accumulated Depreciation [Line Items]
Initial Cost Land	60,993
Gross Amount, Land	60,993
Total	60,993
Net	60,993
Corporate Real Estate Owned Domain | Corporate Properties
Real Estate And Accumulated Depreciation [Line Items]
Gross Amount, Buildings and Fixtures	30,791
Total	30,791
Accumulated Depreciation	(17,357)
Net	13,434
Corporate Real Estate Owned Domain | Corporate Properties | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	30,791
Other Real Estate Owned | Total Other
Real Estate And Accumulated Depreciation [Line Items]
Initial Cost Land	60,993
Gross Amount, Land	73,565
Gross Amount, Buildings and Fixtures	33,187
Total	106,752
Accumulated Depreciation	(17,415)
Net	89,337
Other Real Estate Owned | Total Other | Land
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	12,572
Other Real Estate Owned | Total Other | Buildings and Fixtures
Real Estate And Accumulated Depreciation [Line Items]
Costs Capitalized Subsequent to Acquisition	$ 33,187

Schedule III Real Estate and _3

Schedule III Real Estate and Accumulated Depreciation (Parenthetical) (Details) $ in Millions	12 Months Ended
	Dec. 31, 2020USD ($)
Real Estate And Accumulated Depreciation [Line Items]
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Federal Income Tax Basis	$ 11.5
Minimum [Member] | Land Improvements And Buildings
Real Estate And Accumulated Depreciation [Line Items]
Equipment, Useful Life	5 years
Minimum [Member] | Furniture Fixtures And Equipment
Real Estate And Accumulated Depreciation [Line Items]
Equipment, Useful Life	3 years
Maximum [Member] | Land Improvements And Buildings
Real Estate And Accumulated Depreciation [Line Items]
Equipment, Useful Life	40 years
Maximum [Member] | Furniture Fixtures And Equipment
Real Estate And Accumulated Depreciation [Line Items]
Equipment, Useful Life	5 years
Encumbrance1
Real Estate And Accumulated Depreciation [Line Items]
Amount of bond used as encumbrance	$ 172
Derivative cap interest rate (percent)	4.44%
Derivative termination date	Jan. 10, 2049
Encumbrance2
Real Estate And Accumulated Depreciation [Line Items]
Amount of bond used as encumbrance	$ 118.8
Derivative cap interest rate (percent)	5.08%
Derivative termination date	Jun. 10, 2021
Encumbrance3
Real Estate And Accumulated Depreciation [Line Items]
Amount of bond used as encumbrance	$ 191.3
Derivative cap interest rate (percent)	4.43%
Derivative termination date	Feb. 10, 2049

Schedule III Real Estate and _4

Schedule III Real Estate and Accumulated Depreciation [Schedule] (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Real estate investments:
Balance at beginning of year	$ 13,898,707	$ 13,656,807	$ 13,292,039
Acquisitions	56,327	105,730	130,187
Less: FMV of leases included in acquisitions		(512)	(796)
Improvement and development	437,268	302,380	253,954
Disposition of real estate assets	(53,407)	(165,698)	(18,577)
Balance at end of year	14,338,895	13,898,707	13,656,807
Accumulated depreciation:
Balance at beginning of year	2,955,253	2,549,287	2,075,071
Depreciation	508,746	493,674	485,654
Disposition of real estate assets	(48,894)	(87,708)	(11,438)
Balance at end of year	$ 3,415,105	$ 2,955,253	$ 2,549,287