Consolidated Condensed Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Dec. 26, 2020	Dec. 28, 2019
Cash flows from operating activities:
Net income	$ 192,063	$ 149,340
Adjustments to reconcile net income to net cash generated by operating activities:
Depreciation and amortization	35,478	55,379
Stock-based compensation expense	42,069	39,700
Deferred income taxes	3,679	(3,403)
Loss on retirement or write-off of long-lived assets	52	46
Other non-cash adjustments	124	560
MEMS restructuring charges	352	0
Net change in operating assets and liabilities:
Accounts receivable, net	(90,806)	(55,281)
Inventories	4,036	26,813
Other assets	(3,529)	(9,892)
Accounts payable and other accrued liabilities	6,157	47,080
Income taxes payable	(13,233)	(3,795)
Net cash generated by operating activities	176,442	246,547
Cash flows from investing activities:
Maturities and sales of available-for-sale marketable securities	97,415	131,761
Purchases of available-for-sale marketable securities	(153,505)	(163,925)
Purchases of property, equipment and software	(11,734)	(13,262)
Investments in technology	(1,310)	(4,893)
Net cash used in investing activities	(69,134)	(50,319)
Cash flows from financing activities:
Issuance of common stock, net of shares withheld for taxes	6,487	14,211
Repurchase of stock to satisfy employee tax withholding obligations	(13,619)	(14,309)
Repurchase and retirement of common stock	(65,001)	(70,001)
Net cash used in financing activities	(72,133)	(70,099)
Net increase in cash and cash equivalents	35,175	126,129
Cash and cash equivalents at beginning of period	292,119	216,172
Cash and cash equivalents at end of period	$ 327,294	$ 342,301