Consolidated Condensed Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended
Jun. 29, 2019	Jun. 30, 2018
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ 4,618	$ (4,272)
Other comprehensive income (loss), before tax
Foreign currency translation gain (loss)	24	(2,190)
Unrealized gain on marketable securities	2,115	41
Cumulative effect of adoption of ASU 2018-02	(257)	0
Provision for income taxes	(444)	(8)
Comprehensive income (loss)	$ 6,056	$ (6,429)

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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