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Summary of Significant Accounting Policies: (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Revenues
Increase in minimum rent due to straight-line rent adjustment	$ 7,498	$ 5,399	$ 4,557
Minimum
Revenues
Management fees as a percentage of gross monthly rental revenue	1.50%
Maximum
Revenues
Management fees as a percentage of gross monthly rental revenue	5.00%

X

- Definition

Represents the revenue earned for operating and managing third-party properties, expressed as a percentage of the gross monthly rental revenue of the properties managed.

+ References

No definition available.

+ Details

Name:	mac_ManagementFeeRevenueAsPercentageOfGrossMonthlyRentalRevenue
Namespace Prefix:	mac_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	us-gaap_EntityWideInformationRevenueFromExternalCustomerLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Difference between actual rental income due and rental income recognized on a straight-line basis.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 28

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585

+ Details

Name:	us-gaap_StraightLineRent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration