Consolidated Condensed Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Jun. 29, 2019	Jun. 30, 2018
Cash flows from operating activities:
Net income (loss)	$ 4,618	$ (4,272)
Adjustments to reconcile net income (loss) to net cash generated by operating activities:
Depreciation and amortization	19,745	22,639
Stock-based compensation expense	11,782	12,794
Deferred income taxes	(251)	(371)
Loss on retirement or write-off of long-lived assets	2	314
Other non-cash adjustments	346	107
Net change in operating assets and liabilities:
Accounts receivable, net	9,159	(20,264)
Inventories	18,416	32,306
Other assets	(2,966)	(3,361)
Accounts payable and other accrued liabilities	3,220	(31,185)
Income taxes payable	(7,084)	(4,018)
Net cash generated by operating activities	56,987	4,689
Cash flows from investing activities:
Maturities and sales of available-for-sale marketable securities	42,057	17,655
Purchases of available-for-sale marketable securities	(68,663)	(17,937)
Purchases of property, equipment and software	(3,816)	(10,827)
Investments in technology	(4,301)	(1,728)
Net cash used in investing activities	(34,723)	(12,837)
Cash flows from financing activities:
Issuance of common stock, net of shares withheld for taxes	260	60
Repurchase of stock to satisfy employee tax withholding obligations	(619)	(1,057)
Repurchase and retirement of common stock	(40,000)	(40,000)
Net cash used in financing activities	(40,359)	(40,997)
Net decrease in cash and cash equivalents	(18,095)	(49,145)
Cash and cash equivalents at beginning of period	216,172	235,604
Cash and cash equivalents at end of period	$ 198,077	$ 186,459