CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) Statement (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Mar. 30, 2013	Dec. 29, 2012	Sep. 29, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Oct. 01, 2011	Jul. 02, 2011	Mar. 30, 2013	Mar. 31, 2012	Apr. 02, 2011
Net (loss) income	$ (65,751)	$ 6,768	$ 5,211	$ (944)	$ (7,665)	$ (1,881)	$ 8,537	$ 5,913	$ (54,716)	$ 4,904	$ 7,934
Cumulative translation adjustment, net of taxes of $0, $12, and ($449)									(198)	277	715
Reclassification of unrealized gain on auction rate securities									0	(1,445)	144
Accumulated other comprehensive loss related to benefit plan obligations, net of taxes of $8, ($15), and $4									9	(23)	(3)
Net unrealized (loss) gain on available-for-sale securities, net of taxes of $0, ($3), and ($15)									(34)	7	27
Comprehensive (loss) income									$ (54,939)	$ 3,720	$ 8,817