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

- Details

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 SEC

-Name Regulation S-X (SX)

-Number 210

-Section 04

-Article 3

Reference 2: 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 3: 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 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

Reference 5: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 29, 30

-Article 5

Reference 6: 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