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Mortgage Notes Payable - Premiums and Discounts (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Mortgage loans payable on real estate
Debt premiums (discounts), net	$ 47,773us-gaap_DebtInstrumentUnamortizedDiscountPremiumNet	$ 56,921us-gaap_DebtInstrumentUnamortizedDiscountPremiumNet
Arrowhead Towne Center
Mortgage loans payable on real estate
Debt premiums	10,800us-gaap_DebtInstrumentUnamortizedPremium / us-gaap_DebtInstrumentAxis = mac_ArrowheadTowneCenterMortgageMember	11,568us-gaap_DebtInstrumentUnamortizedPremium / us-gaap_DebtInstrumentAxis = mac_ArrowheadTowneCenterMortgageMember
Deptford Mall One
Mortgage loans payable on real estate
Debt discounts	(7)us-gaap_DebtInstrumentUnamortizedDiscount / us-gaap_DebtInstrumentAxis = mac_DeptfordMallMortgageOneMember	(8)us-gaap_DebtInstrumentUnamortizedDiscount / us-gaap_DebtInstrumentAxis = mac_DeptfordMallMortgageOneMember
Fashion Outlets of Niagara Falls USA
Mortgage loans payable on real estate
Debt premiums	5,182us-gaap_DebtInstrumentUnamortizedPremium / us-gaap_DebtInstrumentAxis = mac_FashionOutletsAtNiagaraMortgageMember	5,414us-gaap_DebtInstrumentUnamortizedPremium / us-gaap_DebtInstrumentAxis = mac_FashionOutletsAtNiagaraMortgageMember
Lakewood Center Mortgage
Mortgage loans payable on real estate
Debt premiums	0us-gaap_DebtInstrumentUnamortizedPremium / us-gaap_DebtInstrumentAxis = mac_LakewoodCenterMortgageMember	3,708us-gaap_DebtInstrumentUnamortizedPremium / us-gaap_DebtInstrumentAxis = mac_LakewoodCenterMortgageMember
Los Cerritos Center Mortgage
Mortgage loans payable on real estate
Debt premiums	16,695us-gaap_DebtInstrumentUnamortizedPremium / us-gaap_DebtInstrumentAxis = mac_LosCerritosCenterMortgageMember	17,965us-gaap_DebtInstrumentUnamortizedPremium / us-gaap_DebtInstrumentAxis = mac_LosCerritosCenterMortgageMember
Stonewood Center Mortgage
Mortgage loans payable on real estate
Debt premiums	7,287us-gaap_DebtInstrumentUnamortizedPremium / us-gaap_DebtInstrumentAxis = mac_StonewoodCenterMortgageMember	7,980us-gaap_DebtInstrumentUnamortizedPremium / us-gaap_DebtInstrumentAxis = mac_StonewoodCenterMortgageMember
Superstition Springs Center
Mortgage loans payable on real estate
Debt premiums	500us-gaap_DebtInstrumentUnamortizedPremium / us-gaap_DebtInstrumentAxis = mac_SuperstitionSpringsCenterMember	579us-gaap_DebtInstrumentUnamortizedPremium / us-gaap_DebtInstrumentAxis = mac_SuperstitionSpringsCenterMember
Valley Mall
Mortgage loans payable on real estate
Debt discounts	(110)us-gaap_DebtInstrumentUnamortizedDiscount / us-gaap_DebtInstrumentAxis = mac_ValleyMallMortgageMember	(132)us-gaap_DebtInstrumentUnamortizedDiscount / us-gaap_DebtInstrumentAxis = mac_ValleyMallMortgageMember
Washington Square Mortgage
Mortgage loans payable on real estate
Debt premiums	$ 7,426us-gaap_DebtInstrumentUnamortizedPremium / us-gaap_DebtInstrumentAxis = mac_WashingtonSquareMortgageMember	$ 9,847us-gaap_DebtInstrumentUnamortizedPremium / us-gaap_DebtInstrumentAxis = mac_WashingtonSquareMortgageMember

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The amount of debt discount that was originally recognized at the issuance of the instrument that has yet to be amortized.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 835

-SubTopic 30

-Section 45

-Paragraph 1A

-URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28541-108399



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-Publisher FASB

-Name Accounting Standards Codification

-Topic 835

-SubTopic 30

-Section 45

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-URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28551-108399



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-Publisher FASB

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-Topic 835

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-URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28541-108399



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