Acquisitions - Additional Information (Detail) - USD ($)				3 Months Ended		6 Months Ended
	Apr. 25, 2018	Feb. 08, 2018	May 31, 2017	Jul. 01, 2018	Jul. 02, 2017	Jul. 01, 2018	Jul. 02, 2017
Business Acquisition [Line Items]
Severance, restructuring, and acquisition integration costs				$ 24,928,000	$ 9,560,000	$ 45,322,000	$ 16,160,000
Amortization of intangibles				25,039,000	27,113,000	49,457,000	50,782,000
Net-Tech Technology, Inc.
Business Acquisition [Line Items]
Percentage of outstanding shares acquired	100.00%
Acquisition price	$ 8,500,000
Snell Advanced Media
Business Acquisition [Line Items]
Percentage of outstanding shares acquired		100.00%
Acquisition price		$ 104,500,000
Maximum earnout consideration		31,400,000
Estimated earnout consideration		29,300,000
Long-term debt		19,315,000
Receivables		19,900,000
Tax basis in acquired goodwill		$ 0
Revenue of acquiree				31,100,000		51,900,000
Loss before taxes of acquiree				6,600,000		9,400,000
Severance, restructuring, and acquisition integration costs				20,300,000		29,500,000
Amortization of intangibles				2,800,000		5,000,000
Inventory adjustment				700,000		1,200,000
Snell Advanced Media | Acquisition-related Costs
Business Acquisition [Line Items]
Severance, restructuring, and acquisition integration costs					20,300,000		29,500,000
Amortization of intangibles					500,000		1,800,000
Inventory adjustment					$ 700,000		$ 1,500,000
Thinklogical Holdings LLC
Business Acquisition [Line Items]
Percentage of outstanding shares acquired		100.00%
Acquisition price			$ 165,800,000
Receivables			4,355,000
Tax basis in acquired goodwill			$ 43,300,000
Revenue of acquiree				9,600,000		17,400,000
Loss before taxes of acquiree				800,000		3,000,000
Amortization of intangibles				$ 3,200,000		$ 6,400,000
Business acquisition, goodwill, tax deductible period						15 years