Consolidated Condensed Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended
	Jun. 26, 2021	Jun. 27, 2020
Statement of Comprehensive Income [Abstract]
Net income	$ 17,209	$ 18,209
Other comprehensive income (loss), before tax
Foreign currency translation gain (loss)	(52)	1,014
Unrealized gain (loss) on marketable securities	(1,123)	9,488
Benefit (provision) for income taxes	236	(1,992)
Comprehensive income	$ 16,270	$ 26,719