XML 21 R57.htm IDEA: XBRL DOCUMENT v2.4.1.9

Stockholder's Equity (Narrative) (Details)	12 Months Ended
	Sep. 27, 2014	Sep. 28, 2013
Class of Stock [Line Items]
Percentage of cash dividend or liquidation payment based on Class B common stock	110.00%imkta_PercentageOfCashDividendOrLiquidationPaymentOnClassBCommonStockPayableToOtherClassCommonStock
Shares authorized for repurchase		4,000,000us-gaap_StockRepurchaseProgramNumberOfSharesAuthorizedToBeRepurchased
Minimum [Member]
Class of Stock [Line Items]
Number of directors set by board of directors	5imkta_NumberOfDirectors / us-gaap_RangeAxis = us-gaap_MinimumMember
Maximum [Member]
Class of Stock [Line Items]
Number of directors set by board of directors	11imkta_NumberOfDirectors / us-gaap_RangeAxis = us-gaap_MaximumMember
Class A Common Stock [Member]
Class of Stock [Line Items]
Number of votes per share held by common stock holders	1imkta_NumberOfVotesPerShareHeldByCommonStockHolders / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassAMember
Percentage of directors to be elected by holders of common stock	25.00%imkta_PercentageOfDirectorsToBeElectedByHoldersOfCommonStock / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassAMember
Class B Common Stock [Member]
Class of Stock [Line Items]
Number of votes per share held by common stock holders	10imkta_NumberOfVotesPerShareHeldByCommonStockHolders / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassBMember
Minimum percentage of outstanding common stock of both classes represented by common stock	12.50%imkta_PercentageOfCommonStockForClassBCommonStock / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassBMember
Shares authorized for repurchase	2,500,000us-gaap_StockRepurchaseProgramNumberOfSharesAuthorizedToBeRepurchased / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassBMember	1,500,000us-gaap_StockRepurchaseProgramNumberOfSharesAuthorizedToBeRepurchased / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassBMember
Shares repurchased during the period	2,500,000us-gaap_StockRepurchasedDuringPeriodShares / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassBMember

X

- Definition

Number of directors.

+ References

No definition available.

+ Details

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Balance Type:	na
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X

- Definition

Number of votes per share held by common stock holders.

+ References

No definition available.

+ Details

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Namespace Prefix:	imkta_
Data Type:	xbrli:integerItemType
Balance Type:	na
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X

- Definition

Percentage of cash dividend or liquidation payment on class B common stock payable to other class common stock.

+ References

No definition available.

+ Details

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Namespace Prefix:	imkta_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Percentage of common stock for class B common stock.

+ References

No definition available.

+ Details

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Namespace Prefix:	imkta_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Percentage of directors to be elected by holders of common stock.

+ References

No definition available.

+ Details

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Namespace Prefix:	imkta_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Details

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

X

- Definition

Number of shares that have been repurchased during the period and have not been retired and are not held in treasury. Some state laws may govern the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock.

+ References

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 SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 29, 30

-Article 5

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The number of shares authorized to be repurchased by an entity's Board of Directors under a stock repurchase plan.

+ References

No definition available.

+ Details

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- Details

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X

- Details

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X

- Details

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