Business segments and other information - total net revenues and total net property, plant and equipment by geographic region (Detail) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jul. 01, 2018	Apr. 01, 2018	Dec. 31, 2017	Oct. 01, 2017	Jul. 02, 2017	Apr. 02, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Segment Reporting Information [Line Items]
Net revenues	$ 641,615	$ 609,672	$ 609,866	$ 587,230	$ 595,106	$ 534,703	$ 528,613	$ 487,881	$ 2,448,383	$ 2,146,303	$ 1,868,027
Property, plant and equipment, net	432,766				382,999				432,766	382,999	302,899
United States
Segment Reporting Information [Line Items]
Net revenues									1,449,426	1,254,825	1,018,786
Property, plant and equipment, net	258,415				216,568				258,415	216,568	167,167
Europe
Segment Reporting Information [Line Items]
Net revenues									671,264	591,370	567,320
Asia and Asia Pacific
Segment Reporting Information [Line Items]
Net revenues									234,090	220,110	208,841
Malaysia
Segment Reporting Information [Line Items]
Property, plant and equipment, net	51,952				43,730				51,952	43,730	31,415
Ireland
Segment Reporting Information [Line Items]
Property, plant and equipment, net	41,223				43,867				41,223	43,867	36,569
Czech Republic
Segment Reporting Information [Line Items]
Property, plant and equipment, net	34,833				35,715				34,833	35,715	30,843
All other
Segment Reporting Information [Line Items]
Net revenues									93,603	79,998	73,080
Property, plant and equipment, net	$ 46,343				$ 43,119				$ 46,343	$ 43,119	$ 36,905