Assets pledged as collateral for letters of credit issued.

No definition available.

Name:	mni_AssetPledgedAsCollateral
Namespace Prefix:	mni_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Details

Name:	mni_LossContingenciesAdditionalDisclosuresAbstract
Namespace Prefix:	mni_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

The liability as of the balance sheet date representing required funding mandated by statute or regulatory authority that is related directly or indirectly to underwriting activities, including pools for self-insurance and excluding premium taxes and income taxes.

+ References

No definition available.

+ Details

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

- Definition

Amount of required future payments of undiscounted ultimate losses in the fiscal year following the latest fiscal year for self-insurance reserves.

+ References

No definition available.

+ Details

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

- Definition

Amount of required future payments of undiscounted ultimate losses in the fifth fiscal year following the latest fiscal year for self-insurance reserves.

+ References

No definition available.

+ Details

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

- Definition

Amount of required future payments of undiscounted ultimate losses in the fourth fiscal year following the latest fiscal year for self-insurance reserves.

+ References

No definition available.

+ Details

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

- Definition

Amount of required future payments of undiscounted ultimate losses in the third fiscal year following the latest fiscal year for self-insurance reserves.

+ References

No definition available.

+ Details

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

- Definition

Amount of required future payments of undiscounted ultimate losses in the second fiscal year following the latest fiscal year for self-insurance reserves.

+ References

No definition available.

+ Details

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

- Definition

Amount of required future payments of undiscounted ultimate losses after the fifth fiscal year following the latest fiscal year for self-insurance reserves.

+ References

No definition available.

+ Details

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

- Details

Name:	mni_LossContingencyUndiscountedAmountOfInsuranceRelatedAssessmentLiabilityAbstract
Namespace Prefix:	mni_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Carrying amount as of the balance sheet date of amounts expected to be recovered under the terms of insurance contracts.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.17)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 17

-Article 5

+ Details

Name:	us-gaap_EstimatedInsuranceRecoveries
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

+ References

No definition available.

+ Details

Name:	us-gaap_LettersOfCreditOutstandingAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Details

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

- Definition

The increase (decrease) in the period in loss contingency liabilities.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 450

-SubTopic 20

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6952336&loc=d3e14326-108349

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 5

-Paragraph 9, 10, 11, 12

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

Name:	us-gaap_LossContingencyAccrualCarryingValuePeriodIncreaseDecrease
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	duration

- Definition

The rate applied as of the balance sheet date to reduce the undiscounted amount of a guarantee fund and other insurance-related assessments to present value.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 405

-SubTopic 30

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6392405&loc=d3e24119-109301

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher AICPA

-Name Statement of Position (SOP)

-Number 97-3

-Paragraph 27

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

Name:	us-gaap_LossContingencyAccrualInsuranceRelatedAssessmentDiscountRate
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

The present value of the liability as of the balance sheet date representing required funding mandated by statute or regulatory authority that is related directly or indirectly to underwriting activities, including pools for self-insurance and excluding premium taxes and income taxes. The funds derived from the assessments generally enable a government guarantor to pay insurance claims in the event that the underwriting insurer is insolvent or otherwise unable to meet its payment obligations.

+ References

+ Details

Name:	us-gaap_LossContingencyDiscountedAmountOfInsuranceRelatedAssessmentLiability
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

COMMITMENTS AND CONTINGENCIES (Details 2) (USD $)			12 Months Ended
COMMITMENTS AND CONTINGENCIES (Details 2) (USD $)	Dec. 30, 2012 Self-Insurance	Dec. 25, 2011 Self-Insurance	Dec. 26, 2010 Indemnification obligations	Dec. 30, 2012 Revolving credit facility
Contingencies
Estimated insurance recoveries	$ 9,100,000
Expected payments of undiscounted ultimate losses
2013	4,827,000
2014	3,377,000
2015	2,478,000
2016	1,889,000
2017	1,481,000
Thereafter	5,717,000
Total	19,769,000	20,500,000
Additional disclosures
Discount rate of ultimate losses (as a percent)	1.10%	1.40%
Present value of self-insurance reserves	19,800,000	20,400,000
Outstanding letters of credit	2,200,000			36,100,000
Asset Pledged as Collateral	2,200,000
Amount reversed and recorded as income			$ 6,500,000