Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Mar. 28, 2020	Mar. 30, 2019	Mar. 31, 2018
Cash flows from operating activities:
Net income	$ 159,498	$ 89,991	$ 161,995
Adjustments to net cash provided by operating activities:
Depreciation and amortization	68,237	79,826	81,399
Stock-based compensation expense	53,757	49,689	48,741
Deferred income taxes	(5,888)	1,717	11,646
(Gain) loss on retirement or write-off of long-lived assets	379	(2,713)	626
Charges (payments) for defined benefit pension plan	0	11,189	(10,929)
Other non-cash charges	697	429	(3,864)
MEMS restructuring charges	21,925	0	0
Net change in operating assets and liabilities:
Accounts receivable, net	(33,082)	(14,316)	19,173
Inventories	17,765	40,636	(37,865)
Other assets	1,379	965	16,824
Accounts payable	27,626	(21,965)	143
Accrued salaries and benefits	11,470	(6,432)	(4,469)
Income taxes payable	(9,809)	(7,974)	22,983
Other accrued liabilities	(18,139)	(14,348)	12,308
Net cash provided by operating activities	295,815	206,694	318,711
Cash flows from investing activities:
Maturities and sales of available-for-sale marketable securities	170,818	70,840	138,221
Purchases of available-for-sale marketable securities	(249,463)	(98,864)	(238,434)
Purchases of property, equipment and software	(15,656)	(31,615)	(55,180)
Investments in technology	(5,920)	(4,143)	(29,323)
Proceeds from the sale of assets	0	9,120	0
Net cash used in investing activities	(100,221)	(54,662)	(184,716)
Cash flows from financing activities:
Principal payments on long-term revolver	0	0	(60,000)
Issuance of common stock, net of shares withheld for taxes	18,635	1,616	4,417
Repurchase of stock to satisfy employee tax withholding obligations	(18,280)	(13,083)	(17,806)
Repurchase and retirement of common stock	(120,002)	(159,997)	(175,776)
Contingent consideration payments	0	0	(392)
Net cash used in financing activities	(119,647)	(171,464)	(249,557)
Net increase (decrease) in cash and cash equivalents	75,947	(19,432)	(115,562)
Cash and cash equivalents at beginning of period	216,172	235,604	351,166
Cash and cash equivalents at end of period	292,119	216,172	235,604
Cash payments during the year for:
Income taxes	22,321	20,617	34,385
Interest	$ 457	$ 612	$ 835