Shareholders' Equity of MAA - Schedule of Cumulative Redeemable Preferred Stock (Details) - $ / shares	3 Months Ended	12 Months Ended
	Mar. 31, 2020	Dec. 31, 2019
Equity [Line Items]
Preferred Stock, Shares Outstanding	867,846	867,846
Preferred Stock, Liquidation Preference Per Share	$ 50.00	$ 50.00
Preferred Stock, Redemption Date	Oct. 01, 2026
Preferred Stock, Redemption Price Per Share	$ 50.00
Preferred Stock, Dividend Rate, Percentage	8.50%	8.50%
Preferred Stock, Dividend Rate, Per-Dollar-Amount	$ 4.25
Redeemable Preferred Stock [Member]
Equity [Line Items]
Preferred Stock, Shares Outstanding	867,846