Goodwill And Other Intangible Assets (Schedule Of Other Intangibles) (Details) (USD $) In Thousands, unless otherwise specified	Mar. 30, 2013	Dec. 29, 2012
Finite and Indefinite-lived Intangible Assets by Major Class [Line Items]
GROSS CARRYING AMOUNT, Amortized	$ 16,456	$ 16,354
ACCUMULATED AMORTIZATION, Amortized	14,833	14,648
OTHER INTANGIBLES, NET, Amortized	1,623	1,706
OTHER INTANGIBLES, NET	8,523	8,606
Trademarks [Member]
Finite and Indefinite-lived Intangible Assets by Major Class [Line Items]
GROSS CARRYING AMOUNT, Amortized	9,602	9,542
ACCUMULATED AMORTIZATION, Amortized	9,210	9,163
OTHER INTANGIBLES, NET, Amortized	392	379
Patents [Member]
Finite and Indefinite-lived Intangible Assets by Major Class [Line Items]
GROSS CARRYING AMOUNT, Amortized	3,684	3,642
ACCUMULATED AMORTIZATION, Amortized	3,359	3,334
OTHER INTANGIBLES, NET, Amortized	325	308
Customer Relationships [Member]
Finite and Indefinite-lived Intangible Assets by Major Class [Line Items]
GROSS CARRYING AMOUNT, Amortized	3,170	3,170
ACCUMULATED AMORTIZATION, Amortized	2,264	2,151
OTHER INTANGIBLES, NET, Amortized	906	1,019
Trade Names [Member]
Finite and Indefinite-lived Intangible Assets by Major Class [Line Items]
OTHER INTANGIBLES, NET, Not Amortized	$ 6,900	$ 6,900