Goodwill And Other Intangible Assets (Schedule Of Other Intangibles) (Details) (USD $) In Thousands, unless otherwise specified	Jun. 29, 2013	Dec. 29, 2012
Finite and Indefinite-lived Intangible Assets by Major Class [Line Items]
GROSS CARRYING AMOUNT, Amortized	$ 16,521	$ 16,354
ACCUMULATED AMORTIZATION, Amortized	15,018	14,648
OTHER INTANGIBLES, NET, Amortized	1,503	1,706
OTHER INTANGIBLES, NET	8,403	8,606
Trademarks [Member]
Finite and Indefinite-lived Intangible Assets by Major Class [Line Items]
GROSS CARRYING AMOUNT, Amortized	9,638	9,542
ACCUMULATED AMORTIZATION, Amortized	9,256	9,163
OTHER INTANGIBLES, NET, Amortized	382	379
Patents [Member]
Finite and Indefinite-lived Intangible Assets by Major Class [Line Items]
GROSS CARRYING AMOUNT, Amortized	3,713	3,642
ACCUMULATED AMORTIZATION, Amortized	3,384	3,334
OTHER INTANGIBLES, NET, Amortized	329	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	2,378	2,151
OTHER INTANGIBLES, NET, Amortized	792	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