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Reconciliation of Operating Income (Loss) from Segments to Consolidated By Reportable Segments (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 28, 2020	Sep. 30, 2019	Sep. 28, 2020	Sep. 30, 2019
Segment Reporting Information [Line Items]
Net sales	$ 513,576	$ 534,173	$ 1,581,520	$ 1,597,495
Operating (loss) income	(40,252)	21,131	(1,074)	80,239
Amortization of definite-lived intangibles	(11,510)	(10,680)	(33,400)	(39,784)
Total other expense	(22,520)	(14,548)	(57,916)	(53,586)
(Loss) income before income taxes	(62,772)	6,583	(58,990)	26,653
Printed Circuit Board
Segment Reporting Information [Line Items]
Net sales	463,664	452,816	1,429,629	1,366,762
RF&S Components
Segment Reporting Information [Line Items]
Net sales	11,742	13,644	33,274	51,725
E-M Solutions
Segment Reporting Information [Line Items]
Net sales	38,170	67,713	118,617	179,008
Operating Segment
Segment Reporting Information [Line Items]
Operating (loss) income	(28,742)	31,811	32,326	120,023
Operating Segment | Printed Circuit Board
Segment Reporting Information [Line Items]
Net sales	463,664	452,816	1,429,629	1,366,762
Operating (loss) income	64,219	51,326	199,683	164,458
Operating Segment | RF&S Components
Segment Reporting Information [Line Items]
Net sales	11,742	13,644	33,274	51,725
Operating (loss) income	(66,098)	5,999	(59,880)	25,824
Operating Segment | E-M Solutions
Segment Reporting Information [Line Items]
Net sales	38,170	67,713	118,617	179,008
Operating (loss) income	(873)	3,236	(20,779)	5,278
Corporate
Segment Reporting Information [Line Items]
Operating (loss) income	$ (25,990)	$ (28,750)	$ (86,698)	$ (75,537)

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