Note 7. Intangible Assets and Goodwill (Detail) - Intangible Assets (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 30, 2012
Gross amount	$ 212,344	$ 213,014
Accumulated amortization	(70,674)	(63,861)
Net amount	141,670	149,153
Developed Technology [Member]
Gross amount	111,376	111,376
Accumulated amortization	(39,485)	(35,386)
Net amount	71,891	75,990
Customer Relationships [Member]
Gross amount	92,594	93,264
Accumulated amortization	(27,592)	(25,191)
Net amount	65,002	68,073
Trade Names [Member]
Gross amount	8,374	8,374
Accumulated amortization	(3,597)	(3,284)
Net amount	$ 4,777	$ 5,090