Selected Quarterly Consolidated Financial Data (Unaudited) (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended								12 Months Ended
	Jul. 01, 2017	Apr. 01, 2017	Dec. 31, 2016	Oct. 01, 2016	Jul. 02, 2016	Mar. 26, 2016	Dec. 26, 2015	Sep. 26, 2015	Jul. 01, 2017	Jul. 02, 2016	Jun. 27, 2015	Aug. 31, 2016	Feb. 19, 2015
Debt Instrument [Line Items]
Revenues	$ 149,380	$ 162,182	$ 153,914	$ 135,492	$ 125,185	$ 101,050	$ 94,129	$ 87,550	$ 600,968	$ 407,914	$ 341,276
Cost of revenues	88,049	95,394	93,150	89,136	85,008	74,114	67,521	64,853	365,729	291,496	284,528
Gross profit	61,331	66,788	60,764	46,356	40,177	26,936	26,608	22,697	235,239	116,418	56,748
Operating expenses	31,444	29,048	27,362	28,417	27,374	24,477	24,076	24,649	116,271	100,576	102,209
Other income (expense), net	30	1,095	(3,098)	(14,182)	(2,470)	(1,894)	(1,390)	(659)	(16,155)	(6,413)	(2,445)
Income (loss) from continuing operations before income taxes	29,917	38,835	30,304	3,757	10,333	565	1,142	(2,611)	102,813	9,429	(47,906)
Income tax (benefit) provision	(26,110)	621	37	406	(1,511)	476	985	899	(25,046)	849	328
Net income (loss)	$ 56,027	$ 38,214	$ 30,267	$ 3,351	$ 11,844	$ 89	$ 157	$ (3,510)	$ 127,859	$ 8,580	$ (56,692)
Net income per share:
Basic (in usd per share)	$ 0.33	$ 0.23	$ 0.18	$ 0.03	$ 0.11	$ 0.00	$ 0.00	$ (0.03)	$ 0.81	$ 0.08	$ (0.52)
Diluted (in usd per share)	$ 0.33	$ 0.22	$ 0.18	$ 0.02	$ 0.09	$ 0.00	$ 0.00	$ (0.03)	$ 0.77	$ 0.08	$ (0.52)
Shares used in computing net income per share:
Basic (in shares)	167,349	166,808	165,822	132,480	111,678	110,882	110,296	109,458	158,115	110,599	108,144
Diluted (in shares)	170,204	169,841	168,856	135,529	147,649	113,699	112,394	109,458	165,031	113,228	108,144
Interest costs related to 6.00% Notes added back to numerator					$ 1,200
Incremental shares added to denominator related to 6.00% Notes (in shares)					33,300				3,753	0	0
6.00% Convertible Senior Notes due 2020 | Convertible Notes
Shares used in computing net income per share:
Stated interest rate (percent)												6.00%	6.00%