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Investments - Available-For-Sale Debt Securities (Details) - USD ($)
$ in Thousands
Apr. 02, 2017
Apr. 03, 2016
Amortized Cost    
Due in 1 year or less $ 188,008 $ 150,253
Due in 1-2 years 46,089 69,571
Due in 2-5 years 101,700 55,805
Total investments in available-for-sale debt securities 335,797 275,629
Estimated Fair Value    
Due in 1 year or less 187,984 150,262
Due in 1-2 years 45,995 69,666
Due in 2-5 years 101,011 55,923
Total investments in available-for-sale debt securities $ 334,990 $ 275,851