Name:	mni_MinimumPercentageOfCommonStockAfterConversionForFreeTransferOfShares
Namespace Prefix:	mni_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

Represents the number of classes of stock.

No definition available.

Name:	mni_NumberOfClassesOfStock
Namespace Prefix:	mni_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

Represents the minimum number of permitted transferees who are descendants of the leading founders of the company.

No definition available.

Name:	mni_NumberOfLinealDescendantsPermittedTransfereesMinimum
Namespace Prefix:	mni_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

Represents the number of votes to which the holders of common stock are entitled for each share held.

No definition available.

Name:	mni_NumberOfVotesPerCommonShareHeld
Namespace Prefix:	mni_
Data Type:	xbrli:decimalItemType
Balance Type:	na
Period Type:	instant

Represents the percentage of Board of Directors selected from voting.

No definition available.

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

Represents the minimum permitted transferees subject to restriction.

No definition available.

Name:	mni_RestrictionNumberOfPermittedTransfereesMinimum
Namespace Prefix:	mni_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

Represents the vote of the holders as a percentage of outstanding shares required for termination of the agreement.

No definition available.

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

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

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

Number of shares issued during the period as a result of the conversion of convertible securities.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.29-30)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21475-112644