XML 51 R72.htm IDEA: XBRL DOCUMENT
v2.4.0.6

Certain Transactions (detail) (USD $) | Mar. 31, 2013 | Mar. 31, 2012
--- | --- | ---
Related Party [Line Items] |  |
Raw Materials and Supplies | $ 118,467,000 | $ 108,438,000
Director [Member] |  |
Related Party [Line Items] |  |
Raw Materials and Supplies | $ 1,184,000 | $ 872,000

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

X
- Definition Gross amount of unprocessed materials to be used in manufacturing or production process and supplies that will be consumed. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 6 -Subparagraph a -Article 5 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 210.5-02.6(a)(4),(5)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_InventoryRawMaterialsAndSupplies
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant