CASH, CASH EQUIVALENTS, AND INVESTMENTS (Details) - USD ($) $ in Thousands	6 Months Ended
	Sep. 26, 2020	Mar. 28, 2020	May 31, 2015
Schedule of Cash, Cash Equivalents and Investments [Line Items]
Cash and cash equivalents	$ 213,901	$ 213,879
Short-term investments (due in 1 year or less)	13,975	11,841
Total cash, cash equivalents and investments measured at fair value, amortized cost	227,240	226,817
Total cash, cash equivalents and investments measured at fair value, gross unrealized gains	762	31
Total cash, cash equivalents and investments measured at fair value, gross unrealized losses	(126)	(1,128)
Total cash, cash equivalents and investments measured at fair value, fair value	227,876	225,720
Unrealized gain	1,800
Cash [Member]
Schedule of Cash, Cash Equivalents and Investments [Line Items]
Cash and cash equivalents	188,894	213,879
Level 1 [Member] | Mutual Funds [Member]
Schedule of Cash, Cash Equivalents and Investments [Line Items]
Cash and cash equivalents	0	0
Available-for-sale Securities, amortized cost basis	13,339	12,938
Available-for-sale Securities, gross unrealized gains	762	31
Available-for-sale Securities, gross unrealized losses	(126)	(1,128)
Available-for-sale Securities, fair value	13,975	11,841
Short-term investments (due in 1 year or less)	13,975	$ 11,841
Level 1 [Member] | Money Market Funds [Member]
Schedule of Cash, Cash Equivalents and Investments [Line Items]
Cash and cash equivalents	25,007
Available-for-sale Securities, amortized cost basis	25,007
Available-for-sale Securities, gross unrealized gains	0
Available-for-sale Securities, gross unrealized losses	0
Available-for-sale Securities	$ 25,007
5.50% Senior Notes [Member] | Senior Notes [Member]
Schedule of Cash, Cash Equivalents and Investments [Line Items]
Stated interest rate of debt instrument	5.50%		5.50%