Quarterly Financial Data (Unaudited) (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended								12 Months Ended
	Jun. 29, 2014	Mar. 30, 2014	Dec. 29, 2013	Sep. 29, 2013	Jun. 30, 2013	Mar. 24, 2013	Dec. 23, 2012	Sep. 23, 2012	Jun. 29, 2014	Jun. 30, 2013	Jun. 24, 2012
Quarterly Financial Information Disclosure [Abstract]
Revenues	$ 297,587	$ 269,269	$ 269,965	$ 269,750	$ 276,453	$ 224,268	$ 223,822	$ 252,492	$ 1,106,571	$ 977,035	$ 1,050,588
Cost of sales	191,789	169,135	172,000	174,439	193,386	169,860	174,733	181,951	707,363	719,930	710,565
Gross profit	105,798	100,134	97,965	95,311	83,067	54,408	49,089	70,541	399,208	257,105	340,023
Selling, general and administrative expense	48,816	45,025	44,727	43,750	46,348	43,020	45,083	47,295	182,318	181,746	200,411
Research and development expense	33,179	32,710	32,786	32,173	32,643	28,876	32,125	33,449	130,848	127,093	135,105
Impairment of goodwill									0	0	69,421
Amortization of acquisition-related intangible assets	1,555	1,605	1,630	1,630	1,630	1,663	1,680	1,680	6,420	6,653	8,369
Asset impairment, restructuring and related charges (recoveries)	1,597	1,624	1,015	1,402	2,209	880	4,941	8,966	5,638	16,996	0
Operating income (loss)	20,651	19,170	17,807	16,356	237	(20,031)	(34,740)	(20,849)	73,984	(75,383)	(67,873)
Other expense (income), net	251	451	1,510	762	421	(450)	411	1,008	2,974	1,390	4,267
Interest (income) expense, net	(10)	28	7	(1)	33	64	(8)	(32)	24	57	(333)
Income (loss) before income taxes	20,410	18,691	16,290	15,595	(217)	(19,645)	(35,143)	(21,825)	70,986	(76,830)	(71,807)
Provision for (benefit from) income taxes	7,461	(449)	(1,631)	6,872	5,861	1,600	(2,421)	6,950	12,253	11,990	(16,757)
Net income (loss)	$ 12,949	$ 19,140	$ 17,921	$ 8,723	$ (6,078)	$ (21,245)	$ (32,722)	$ (28,775)	$ 58,733	$ (88,820)	$ (55,050)
Net income (loss) per common share:
Basic	$ 0.18	$ 0.27	$ 0.25	$ 0.12	$ (0.09)	$ (0.31)	$ (0.47)	$ (0.42)	$ 0.83	$ (1.28)	$ (0.79)
Diluted	$ 0.18	$ 0.26	$ 0.25	$ 0.12	$ (0.09)	$ (0.31)	$ (0.47)	$ (0.42)	$ 0.81	$ (1.28)	$ (0.79)
Weighted average common shares outstanding:
Basic	71,208	71,248	71,147	70,830	69,785	69,273	69,144	69,283	71,108	69,385	69,270
Diluted	72,874	72,728	72,163	71,664	69,785	69,273	69,144	69,283	72,549	69,385	69,270