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Quarterly Financial Data (Additional Information) (Detail) € in Thousands			3 Months Ended								12 Months Ended
	Jun. 11, 2013 USD ($)	Jun. 11, 2013 EUR (€)	Mar. 31, 2019 USD ($)	Dec. 30, 2018 USD ($)	Sep. 30, 2018 USD ($)	Jul. 01, 2018 USD ($)	Mar. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)	Oct. 01, 2017 USD ($)	Jul. 02, 2017 USD ($)	Mar. 31, 2019 USD ($)	Mar. 31, 2018 USD ($)	Mar. 31, 2017 USD ($)
Quarterly Financial Information Disclosure [Abstract]
Inventory Adjustments			$ 2,590			$ 526
Inventory step up to fair value relating to Alpha acquisition and exit activities			3,516,000	$ 3,747,000			$ 3,457,000				$ 10,379,000	$ 3,457,000	$ 2,157,000
Restructuring and other exit charges			26,457,000	5,392,000	$ 1,121,000	$ 1,739,000	1,064,000	$ 1,808,000	$ 1,776,000	$ 833,000	34,709,000	5,481,000	7,160,000
Litigation Settlement, Amount Awarded from Other Party	$ 2,756,000	€ 2,000		2,843
Litigation Settlement, Expense			$ 7,280								4,437,000	0	23,725,000
Income tax expense				$ 13,483							21,584,000	118,493,000	54,472,000
Impairment of goodwill											0	0	12,216,000
Gain on sale of facility - Asia											258,000	(116,000)	7,000
Tax expense relating to Tax Cuts and Jobs Act of 2017							$ 4,106,000	$ 77,347,000			$ (13,483,000)	$ 83,400,000	$ 0

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