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Financial Instruments - Schedule Available-for-sale Securities (Details) - USD ($)
$ in Thousands
12 Months Ended
Apr. 03, 2021
Mar. 28, 2020
Mar. 30, 2019
Information on sale of available-for-sale securities      
Proceeds from sale of available-for-sale and equity securities $ 76,407 $ 670,604 $ 35,734
Gross realized gains on sale of available-for-sale securities 801 3,349 372
Gross realized losses on sale of available-for-sale securities (450) (216) (51)
Net realized gains (losses) on sale of available-for-sale securities 351 3,133 321
Amortization of premiums on available-for-sale securities $ (280) $ 3,551 $ 8,118