Derivatives and Hedging Activities (Other Comprehensive Income) (Details) - Parent Company [Member] - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	$ (412)	$ 108	$ (26,054)
Other comprehensive income before reclassifications	(8,306)	(12,335)	10,684
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, Net of Tax	7,064	11,785	16,370
Net current-period other comprehensive income attributable to noncontrolling interest	65	30	(892)
Net current-period other comprehensive income attributable to MAA	(1,177)	(520)	26,162
Ending balance	$ (1,589)	$ (412)	$ 108