XML 44 R28.htm IDEA: XBRL DOCUMENT
v2.4.0.8

Note 3 (Details) (USD $) | 3 Months Ended | 9 Months Ended
--- | --- | ---
Jun. 29, 2013 | Jun. 23, 2012 | Jun. 29, 2013 | Jun. 23, 2012
Note 3 (Details) [Line Items] |  |  |  |
Depreciation | $ 7,434,000 | $ 6,620,000 | $ 21,298,000 | $ 19,332,000
Minimum [Member] |  |  |  |
Note 3 (Details) [Line Items] |  |  |  |
Finite-Lived Intangible Asset, Useful Life |  |  | 3 years |
Maximum [Member] |  |  |  |
Note 3 (Details) [Line Items] |  |  |  |
Finite-Lived Intangible Asset, Useful Life |  |  | 20 years |

X
- Details
Name: | jjsf_Note3DetailsLineItems
Namespace Prefix: | jjsf_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 + Details
Name: | us-gaap_Depreciation
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
Name: | us-gaap_FiniteLivedIntangibleAssetUsefulLife
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration