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, 2017	Oct. 01, 2017	Jul. 02, 2017	Apr. 02, 2017	Dec. 31, 2016	Sep. 25, 2016	Jun. 26, 2016	Mar. 27, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Segment Reporting Information [Line Items]
Net revenues	$ 595,106	$ 534,703	$ 528,613	$ 487,881	$ 513,933	$ 455,648	$ 473,553	$ 424,893	$ 2,146,303	$ 1,868,027	$ 1,809,690
Property, plant and equipment, net	382,999				302,899				382,999	302,899	316,123
United States
Segment Reporting Information [Line Items]
Net revenues									1,254,825	1,018,786	967,819
Property, plant and equipment, net	216,568				167,167				216,568	167,167	178,895
Europe
Segment Reporting Information [Line Items]
Net revenues									591,370	567,320	570,672
Asia and Asia Pacific
Segment Reporting Information [Line Items]
Net revenues									220,110	208,841	196,796
Malaysia
Segment Reporting Information [Line Items]
Property, plant and equipment, net	43,730				31,415				43,730	31,415	33,777
Ireland
Segment Reporting Information [Line Items]
Property, plant and equipment, net	43,867				36,569				43,867	36,569	33,219
Czech Republic
Segment Reporting Information [Line Items]
Property, plant and equipment, net	35,715				30,843				35,715	30,843	32,305
All other
Segment Reporting Information [Line Items]
Net revenues									79,998	73,080	74,403
Property, plant and equipment, net	$ 43,119				$ 36,905				$ 43,119	$ 36,905	$ 37,927