Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Apr. 01, 2017
Components of accumulated other comprehensive income (loss)
Accumulated unrealized losses on available-for-sale securities, net of tax	$ (29,844)	$ (17,091)
Accumulated unrealized gain (losses) on hedging transactions, net of tax	1,674	661
Accumulated cumulative translation adjustment, net of tax	(6,339)	(8,251)
Accumulated other comprehensive loss	$ (34,509)	$ (24,681)