INVESTMENTS IN UNCONSOLIDATED COMPANIES (Details 2) (USD $) In Thousands, unless otherwise specified	6 Months Ended
Jun. 30, 2013	Jun. 24, 2012
INVESTMENTS IN UNCONSOLIDATED COMPANIES
Proportionate share of net loss before taxes	20.00%
Condensed financial information
Net revenues	$ 645,959	$ 608,406
Operating income	102,949	96,989
Net income	$ 103,954	$ 95,084

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