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Note 7 - Dana Claim (Details) (USD $)	0 Months Ended	3 Months Ended	9 Months Ended
Note 7 - Dana Claim (Details) (USD $)	Aug. 07, 2007	Sep. 30, 2012	Sep. 29, 2013	Sep. 30, 2012	Aug. 31, 2011	Mar. 03, 2006
Note 7 - Dana Claim (Details) [Line Items]
Number Of Subsidiaries Of Client						40
Number of Supply Commitments Replaced	3
Litigation Settlement, Amount	$ 89,900,000
Deferred Revenue, Revenue Recognized			6,000,000	5,919,000
NumberOfSharesReceivedInSettlement (in Shares)					143,966
Marketable Securities, Gain (Loss)		1,313,000		1,850,000
Fair Value [Member]
Note 7 - Dana Claim (Details) [Line Items]
Litigation Settlement, Amount	$ 76,483,000

This item represents the net total realized and unrealized gain (loss) included in earnings for the period as a result of selling or holding marketable securities categorized as trading, available-for-sale, or held-to-maturity, including the unrealized holding gain (loss) of held-to-maturity securities transferred to the trading security category and the cumulative unrealized gain (loss) which was included in other comprehensive income (a separate component of shareholders' equity) for available-for-sale securities transferred to trading securities during the period. Additionally, this item would include any losses recognized for other than temporary impairments (OTTI) of the subject investments in debt and equity securities.

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