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Note 14 - Business Segment Information (Detail) - Net Sales By Product Line (USD $) In Thousands, unless otherwise specified | 12 Months Ended
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Sep. 29, 2012 | Oct. 01, 2011 | Oct. 02, 2010
Sales By Product Line | $ 363,303 | $ 336,909 | $ 211,586
Welded Wire Reinforcement [Member] |  |  |
Sales By Product Line | 230,049 | 208,741 | 109,551
PC Strand [Member] |  |  |
Sales By Product Line | $ 133,254 | $ 128,168 | $ 102,035

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- Definition Amount of total revenue for the reportable segments, including revenue from external customers, transactions with other operating segments of the same entity, and (gross) interest revenue. All considered to be "operating revenue" for purposes of the taxonomy. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -Subparagraph (a),(b),(c) -URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e8736-108599 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 131 -Paragraph 27 -Subparagraph a, b, c -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
Name: | us-gaap_SegmentReportingInformationRevenue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration