INVESTMENTS IN UNCONSOLIDATED COMPANIES (Details 2) (USD $) In Thousands, unless otherwise specified	3 Months Ended
Mar. 31, 2013	Mar. 25, 2012
INVESTMENTS IN UNCONSOLIDATED COMPANIES
Proportionate share of net loss before taxes	20.00%
Condensed financial information
Net revenues	$ 308,832	$ 295,513
Operating income	47,248	38,023
Net income	$ 51,131	$ 37,536

Represents the proportionate share in consolidated net income (loss) before taxes in affiliates subsidiaries associates and joint ventures.

No definition available.

Name:	mni_ShareInConsolidatedNetIncomeLossBeforeTaxesInAffiliatesSubsidiariesAssociatesAndJointVentures
Namespace Prefix:	mni_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration