SEGMENT REPORTING AND GEOGRAPHIC INFORMATION - Segments Results for Revenue and Gross Margin (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Oct. 02, 2021	Sep. 26, 2020	Oct. 02, 2021	Sep. 26, 2020
Segment Reporting, Asset Reconciling Item [Line Items]
Total segment gross profit as reviewed by CODM	$ 179,693	$ 180,746	$ 354,883	$ 337,078
Operating Segments
Segment Reporting, Asset Reconciling Item [Line Items]
Total segment revenues as reviewed by CODM	420,078	415,206	852,510	776,008
Total segment gross profit as reviewed by CODM	198,145	202,901	391,960	383,386
Operating Segments | Products Reportable Segment
Segment Reporting, Asset Reconciling Item [Line Items]
Total segment revenues as reviewed by CODM	361,530	347,970	732,909	639,756
Total segment gross profit as reviewed by CODM	158,759	156,627	312,307	290,869
Operating Segments | Services Reportable Segment
Segment Reporting, Asset Reconciling Item [Line Items]
Total segment revenues as reviewed by CODM	58,548	67,236	119,601	136,252
Total segment gross profit as reviewed by CODM	$ 39,386	$ 46,274	$ 79,653	$ 92,517