Earnings Per OP Unit of MAALP (Details) - Limited Partner [Member] - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands		12 Months Ended
		Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Earnings Per Unit Disclosure
Weighted average common units - basic		79,361	79,188	53,075
Weighted Average Number Diluted Shares Outstanding Adjustment		0	0	88
Weighted average common shares - diluted		79,361	79,188	53,163
Calculation of Basic Earnings Per Unit [Member]
Earnings Per Unit Disclosure
Income from Continuing Operations, Including Portion Attributable to Noncontrolling Interest		$ 350,745	$ 150,946	$ 37,692
Income from continuing operations allocated to unvested restricted shares		772	278	33
Income from continuing operations available for common unitholders, adjusted		349,973	150,668	37,659
Income from Discontinued Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest		0	5,331	69,852
Income from discontinued operations allocated to unvested restricted shares		0	(10)	(62)
Income from discontinued operations available for common unitholders, adjusted		$ 0	$ 5,321	$ 69,790
Earnings per unit - basic		$ 4.41	$ 1.97	$ 2.02
Calculation of Diluted Earnings Per Unit [Member]
Earnings Per Unit Disclosure
Income from Continuing Operations, Including Portion Attributable to Noncontrolling Interest		$ 350,745	$ 150,946	$ 37,692
Income from continuing operations allocated to unvested restricted shares		772	278	0
Income from continuing operations available for common unitholders, adjusted		349,973	150,668	37,692
Income from Discontinued Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest		0	5,331	69,852
Income from discontinued operations allocated to unvested restricted shares		0	(10)	0
Income from discontinued operations available for common unitholders, adjusted		$ 0	$ 5,321	$ 69,852
Diluted Earnings Per Unit		$ 4.41	$ 1.97	$ 2.02
Restricted Stock [Member]
Earnings Per Unit Disclosure
Effect of dilutive securities (units)	[1]	100

[1] 0.1 million potentially dilutive securities and their related income are not included in the diluted earnings per unit calculations as they are not dilutive.