Condensed Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended
Jul. 03, 2016	Jun. 28, 2015
Statement Of Income And Comprehensive Income [Abstract]
Net income	$ 18,283	$ 2,556
Changes in fair value of marketable securities:
Changes in unrealized gains	516	(455)
Net realized losses (gains) reclassified into earnings	(158)	26
Total changes in fair value of marketable securities	358	(429)
Foreign currency translation adjustments	(310)	116
Total other comprehensive income (loss)	48	(313)
Comprehensive income	$ 18,331	$ 2,243

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 after tax and reclassification adjustments, of appreciation (loss) in value of unsold available-for-sale securities, attributable to parent entity. Excludes amounts related to other than temporary impairment (OTTI) loss.

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Amount after 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, attributable to parent entity.

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