Marketable Securities (Narrative) (Details) - USD ($) $ in Thousands	9 Months Ended
Dec. 28, 2019	Mar. 30, 2019
Debt Securities, Available-for-sale [Line Items]
Amortized cost on available for sale securities held at gross unrealized loss	$ 27,900	$ 123,100
Gross unrealized loss	(43)	(641)
Amortized cost	$ 260,403	228,757
Securities in a continuous unrealized loss position for more than 12 months, amortized cost		120,300
Securities in a continuous unrealized loss position for more than 12 months, aggregate unrealized loss		$ 600
Minimum
Debt Securities, Available-for-sale [Line Items]
Maturity period for highly-rated securities	1 year
Maximum
Debt Securities, Available-for-sale [Line Items]
Maturity period for highly-rated securities	3 years

Amortized cost of available for sale securities in an unrealized loss position.

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- Definition

Debt Securities, Available-For-Sale, Maturity Period

+ References

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- Definition

Amount, before tax, of unrealized loss in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

+ References

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- Definition

Amortized cost of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

+ References

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Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in continuous unrealized loss position for more than 12 months, without allowance for credit loss. Includes beneficial interest in securitized financial asset.

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Amount of accumulated unrealized loss on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in continuous unrealized loss position for 12 months or longer, without allowance for credit loss. Includes beneficial interest in securitized financial asset.

+ References

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

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