XML 32 R67.htm IDEA: XBRL DOCUMENT
v2.4.0.6

Major Supplier (Details) (USD $) In Millions, unless otherwise specified | 12 Months Ended
--- | ---
Sep. 29, 2012 | Sep. 24, 2011 | Sep. 25, 2010
Major Supplier (Textual) [Abstract] |  |  |
Purchases from distributor | $ 201.3 | $ 273.9 | $ 269.4
Due to distributors current | 0.1 | 10.4 |
Sales to distributor | 39.4 | 42.2 | 37.6
Due from distributor Current | $ 1.7 | $ 1.9 |
Class A Common Stock [Member] |  |  |
Major Supplier (Textual) [Abstract] |  |  |
Percentage of common stock owns by distributor | 2.00% |  |
Class B Common Stock [Member] |  |  |
Major Supplier (Textual) [Abstract] |  |  |
Percentage of common stock owns by distributor | 1.00% |  |

X
- Definition Due from distributor current. + References No definition available. + Details
Name: | imkta_DueFromDistributorCurrent
Namespace Prefix: | imkta_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Due to distributors current. + References No definition available. + Details
Name: | imkta_DueToDistributorsCurrent
Namespace Prefix: | imkta_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Details
Name: | imkta_MajorSupplierTextualAbstract
Namespace Prefix: | imkta_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Percentage of common stock owns by distributor. + References No definition available. + Details
Name: | imkta_PercentageOfCommonStockOwnsByDistributor
Namespace Prefix: | imkta_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Purchases from distributor. + References No definition available. + Details
Name: | imkta_PurchasesFromDistributor
Namespace Prefix: | imkta_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Sales to distributor. + References No definition available. + Details
Name: | imkta_SalesToDistributor
Namespace Prefix: | imkta_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration