Note 12 - Business Unit Segment Information (Detail) - Net Sales by Geographical Area (USD $) In Thousands, unless otherwise specified	3 Months Ended				6 Months Ended
	Jun. 30, 2012		Jul. 02, 2011		Jun. 30, 2012		Jul. 02, 2011
Net sales	$ 175,853	[1]	$ 176,615	[1]	$ 336,431	[1]	$ 343,775	[1]
United States [Member]
Net sales	59,370		60,858		114,610		118,641
China [Member]
Net sales	37,677		40,361		68,127		75,557
Other Countries [Member]
Net sales	$ 78,806		$ 75,396		$ 153,694		$ 149,577

[1] Sales by country represent sales to customer or distributor locations.