Consolidated Condensed Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Sep. 28, 2019	Sep. 29, 2018	Sep. 28, 2019	Sep. 29, 2018
Statement of Comprehensive Income [Abstract]
Net income	$ 76,210	$ 58,173	$ 80,828	$ 53,901
Other comprehensive income (loss), before tax
Foreign currency translation gain (loss)	(1,427)	204	(1,403)	(1,986)
Unrealized gain on marketable securities	385	198	2,500	239
Cumulative effect of adoption of ASU 2018-02	0	0	(257)	0
Provision for income taxes	(81)	(42)	(525)	(50)
Comprehensive income	$ 75,087	$ 58,533	$ 81,143	$ 52,104

Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners.

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Amount before tax and reclassification adjustments of gain (loss) on foreign currency translation adjustments, foreign currency transactions designated and effective as economic hedges of a net investment in a foreign entity and intra-entity foreign currency transactions that are of a long-term-investment nature.

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Amount before tax and reclassification adjustments of unrealized holding gain (loss) on available-for-sale securities and unrealized holding gain (loss) related to transfers of securities into the available-for-sale classification and out of the held-to-maturity classification.

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Amount of increase (decrease) in accumulated other comprehensive income (AOCI) for reclassification to retained earnings of tax effect from remeasurement of deferred tax pursuant to Tax Cuts and Jobs Act.

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