SEGMENT REPORTING AND GEOGRAPHIC INFORMATION - Segments Results for Revenue and Gross Margin (Details) - USD ($) $ in Thousands	3 Months Ended
	Jun. 27, 2020	Jun. 29, 2019
Segment Reporting, Asset Reconciling Item [Line Items]
Total segment gross profit as reviewed by CODM	$ 156,332	$ 212,646
Operating Segments
Segment Reporting, Asset Reconciling Item [Line Items]
Total segment revenues as reviewed by CODM	360,802	459,926
Total segment gross profit as reviewed by CODM	180,485	256,741
Operating Segments | Products Segment
Segment Reporting, Asset Reconciling Item [Line Items]
Total segment revenues as reviewed by CODM	291,786	383,372
Total segment gross profit as reviewed by CODM	134,242	206,692
Operating Segments | Services Segment
Segment Reporting, Asset Reconciling Item [Line Items]
Total segment revenues as reviewed by CODM	69,016	76,554
Total segment gross profit as reviewed by CODM	$ 46,243	$ 50,049