Operating Segment Information - Schedule of Reportable Segments (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended	6 Months Ended	36 Months Ended
Dec. 28, 2014	Jun. 29, 2014	Dec. 29, 2013	Dec. 28, 2014	Dec. 29, 2013	Dec. 28, 2014
Segment Reporting Information [Line Items]
Consolidated net revenues	$ 111,087us-gaap_SalesRevenueNet		$ 122,996us-gaap_SalesRevenueNet	$ 214,896us-gaap_SalesRevenueNet	$ 237,828us-gaap_SalesRevenueNet
Operating (loss) income	8,305us-gaap_OperatingIncomeLoss		(1,589)us-gaap_OperatingIncomeLoss	9,438us-gaap_OperatingIncomeLoss	(4,841)us-gaap_OperatingIncomeLoss
Stock-based compensation				(6,555)us-gaap_ShareBasedCompensation	(8,316)us-gaap_ShareBasedCompensation
Amortization of intangibles	(6,931)		(7,842)	(13,885)	(15,606)
Patent litigation damages, license fees and royalties	(2,090)		(2,358)	(3,815)	(3,855)
Mitigation expenses related to the Broadcom patents			(900)	(200)	(3,400)	(21,900)
Restructuring Charges	480us-gaap_RestructuringCharges	(1,100)us-gaap_RestructuringCharges	(7,450)us-gaap_RestructuringCharges	853us-gaap_RestructuringCharges	(7,450)us-gaap_RestructuringCharges
Total assets	722,386us-gaap_Assets	717,923us-gaap_Assets		722,386us-gaap_Assets		722,386us-gaap_Assets
Goodwill	248,519us-gaap_Goodwill	248,519us-gaap_Goodwill		248,519us-gaap_Goodwill		248,519us-gaap_Goodwill
Operating Segments [Member]
Segment Reporting Information [Line Items]
Operating (loss) income	20,146		20,655	33,109	34,128
Operating Segments [Member] \| Connectivity [Member]
Segment Reporting Information [Line Items]
Consolidated net revenues	104,801		113,348	202,736	218,083
Operating (loss) income	22,708		22,143	38,625	36,860
Total assets	537,457	568,709		537,457		537,457
Goodwill	177,290	177,290		177,290		177,290
Operating Segments [Member] \| Visibility [Member]
Segment Reporting Information [Line Items]
Consolidated net revenues	6,286		9,648	12,160	19,745
Operating (loss) income	(2,562)		(1,488)	(5,516)	(2,732)
Total assets	184,929	149,214		184,929		184,929
Goodwill	71,229	71,229		71,229		71,229
Reconciling Items [Member]
Segment Reporting Information [Line Items]
Operating (loss) income	(11,841)		(22,244)	(23,671)	(38,969)
Stock-based compensation	(3,024)		(3,744)	(6,555)	(8,316)
Amortization of intangibles	(6,931)		(7,842)	(13,885)	(15,606)
Patent litigation damages, license fees and royalties	(2,090)		(2,358)	(3,815)	(3,855)
Mitigation expenses related to the Broadcom patents	(8)		(930)	(182)	(3,449)
Restructuring Charges	480		(7,450)	853	(7,450)
Other	$ (268)		$ 80	$ (87)	$ (293)

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