Acquisitions - Additional Information (Detail) - USD ($)		3 Months Ended	4 Months Ended	9 Months Ended
	Jun. 11, 2015	Dec. 31, 2015	Oct. 04, 2015	Oct. 02, 2016	Oct. 04, 2015
Business Acquisition [Line Items]
Payments of contingent consideration				$ 11,697,000
Universal Robots
Business Acquisition [Line Items]
Total purchase price	$ 315,437,000
Cash paid to acquire outstanding common and preferred stock	283,800,000
Contingent consideration	31,600,000
Arrangement range of outcomes value high	65,000,000
Payments of contingent consideration				$ 15,000,000
EBITDA contingent consideration amount, percentage				100.00%
Decrease in goodwill		$ (5,400,000)
Contingent consideration adjustment		(2,200,000)
Increase in intangible assets		1,600,000
Decrease in acquired liabilities		$ (1,600,000)
Goodwill, not deductible for tax purposes	$ 221,100,000
Revenues			$ 19,800,000
Income (loss) before income taxes			$ (6,500,000)
Net income					$ 197,745,000
Universal Robots | Fair Value Adjustment to Inventory
Business Acquisition [Line Items]
Net income					1,600,000
Universal Robots | Acquisition Related Costs
Business Acquisition [Line Items]
Net income					$ 1,000,000