Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Jun. 30, 2018	Jul. 01, 2017
Cash flows from operating activities:
Net income	$ 190,038	$ 157,244	[1]
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	15,075	11,232
Amortization	7,333	3,729
Stock-based compensation	35,608	32,036
Amortization of debt discounts	295	1,676
Provision (benefit) for deferred income taxes	(13,532)	24,694	[1]
Others	6,147	(446)
Changes in assets and liabilities:
Accounts receivable, net	(74,652)	(23,654)	[1]
Inventories	(10,924)	11,691
Prepaid expenses and other current assets	2,140	(5,023)
Other assets	(7,770)	(8,690)
Accounts payable	9,320	(3,049)
Accrued liabilities	(32,437)	2,378	[1]
Income taxes payable	49,527	(12,910)
Net cash provided by operating activities	176,168	190,908
Cash flows from investing activities:
Purchases of available-for-sale securities	(559,159)	(832,705)
Proceeds from sale and maturity of available-for-sale securities	155,230	613,396
Purchases of property, plant and equipment and other intangibles	(26,359)	(9,926)
Other investing activities	(13,900)	(3,008)
Net cash used in investing activities	(444,188)	(232,243)
Cash flows from financing activities:
Payments for Repurchase of Common Stock	(137,300)	(67,062)
Payments Related to Tax Withholding for Share-based Compensation	(5,495)	(933)
Proceeds from issuance of common stock through various stock plans	214	2,003
Payment of dividends to stockholders	(90,675)	(87,303)
Repayment of convertible debt	0	(457,918)
Proceeds from Issuance of Long-term Debt	0	745,871
Other financing activities	(663)	(663)
Net cash (used in) provided by financing activities	(233,919)	133,995
Net (decrease) increase in cash and cash equivalents	(501,939)	92,660
Cash and cash equivalents at beginning of period	2,179,328	966,695
Cash and cash equivalents at end of period	1,677,389	1,059,355
Supplemental disclosure of cash flow information:
Interest paid	21,174	5,795
Income taxes (refunded) paid, net	$ (13,328)	$ 1,873

[1] Prior year balances have been restated to reflect the retrospective application of the new revenue recognition accounting standard. Please refer to "Note 2. Recent Accounting Changes and Accounting Pronouncements."