CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Jan. 01, 2022	Dec. 26, 2020	Jan. 01, 2022	Dec. 26, 2020
Net revenues	$ 409,566	$ 484,685	$ 1,259,762	$ 1,251,375
Cost of revenues	245,380	258,028	740,694	687,639
Gross profit	164,186	226,657	519,068	563,736
Operating expenses
Research, development, and engineering	46,216	54,150	136,090	156,327
Selling, general, and administrative	121,387	129,641	364,417	361,892
Loss, net from litigation settlements	0	0	0	17,561
Restructuring and other related charges	2,398	13,977	33,977	49,477
Total operating expenses	170,001	197,768	534,484	585,257
Operating (loss) income	(5,815)	28,889	(15,416)	(21,521)
Interest expense	15,948	18,417	53,871	58,182
Other non-operating income, net	(995)	(2,596)	(1,664)	(4,188)
(Loss) income before income taxes	(20,768)	13,068	(67,623)	(75,515)
Income tax benefit	(9,604)	(7,045)	(116,433)	(7,208)
Net (loss) income	$ (11,164)	$ 20,113	$ 48,810	$ (68,307)
Per share data
Basic (in dollars per share)	$ (0.26)	$ 0.49	$ 1.15	$ (1.67)
Diluted (in dollars per share)	$ (0.26)	$ 0.48	$ 1.11	$ (1.67)
Basic (in shares)	42,745	41,252	42,450	40,894
Diluted (in shares)	42,745	42,184	43,811	40,894
Product
Net revenues	$ 354,022	$ 420,711	$ 1,086,607	$ 1,059,846
Cost of revenues	226,994	236,842	682,360	622,718
Service
Net revenues	55,544	63,974	173,155	191,529
Cost of revenues	$ 18,386	$ 21,186	$ 58,334	$ 64,921