CONTRIBUTION OF REAL PROPERTY TO QUALIFIED DEFINED BENEFIT PLAN (Details) - Pension plan - Expected $ in Thousands	1 Months Ended	3 Months Ended
Feb. 29, 2016 USD ($) property	Mar. 27, 2016 USD ($)
Defined Benefit Plan Real Property Contributed Number of Locations \| property	6
Lease Term of Contributed Property	11 years
Financing Obligations Not Long Term Debt Current and Noncurrent		$ 47,100
Aggregate Annual Rent Payments On Contributed Property	$ 3,500
Gain or loss recognized on the contribution of property		$ 0
Real Estate
Defined Benefit Plan, Contributions by Employer	$ 47,100

Represents the aggregate annual rent payment associated with the contributed lease properties within the Pension Plan.

No definition available.

Name:	mni_AggregateAnnualRentPaymentsOnContributedProperty
Namespace Prefix:	mni_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Represents the number of locations from which real property was contributed to a defined benefit plan.

+ References

No definition available.

+ Details

Name:	mni_DefinedBenefitPlanRealPropertyContributedNumberOfLocations
Namespace Prefix:	mni_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents liabilities recorded by the entity related to financing obligations created by the entity's continuing involvement in properties sold or donated. Includes the current and noncurrent portion of the obligations.

+ References

No definition available.

+ Details

Name:	mni_FinancingObligationsNotLongTermDebtCurrentAndNoncurrent
Namespace Prefix:	mni_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Represents the amount of gain (loss) on value of property contributed.

+ References

No definition available.

+ Details

Name:	mni_GainLossOnContributionOfProperty
Namespace Prefix:	mni_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The lease term for properties which the entity contributed to its pension plan and then leased back.

+ References

No definition available.

+ Details

Name:	mni_LeaseTermOfContributedProperty
Namespace Prefix:	mni_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

The increase in the fair value of plan assets from contributions made by the employer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (b)(3)
-URI http://asc.fasb.org/extlink&oid=58740216&loc=d3e1928-114920

+ Details

Name:	us-gaap_DefinedBenefitPlanContributionsByEmployer
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Details

Name:	us-gaap_DefinedContributionPlanTypeAxis=us-gaap_PensionPlansDefinedBenefitMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_StatementScenarioAxis=us-gaap_ScenarioForecastMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis=us-gaap_RealEstateMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: