CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	6 Months Ended
	Sep. 30, 2018	Oct. 01, 2017
Cash flows from operating activities:
Net income	$ 66,220	$ 35,394
Adjustments:
Depreciation	13,506	13,173
Amortization of intangible assets	20,767	21,626
Amortization of debt issuance costs and debt discount	7,686	7,326
Other-than-temporary impairment loss on investment	(2,000)	0
Stock-based compensation expense, net of amounts capitalized in inventory	30,700	24,769
Deferred income tax	4,452	(7,550)
Changes in assets and liabilities, net of acquisitions:
Accounts receivable, net	(9,662)	(1,569)
Inventories	7,656	7,111
Prepayments and other assets	(2,831)	1,112
Accounts payable	1,889	(7,633)
Accrued compensation and related expenses	(4,103)	852
Deferred income on shipments to distributors	0	838
Income taxes payable and receivable	(3,432)	4,573
Other accrued liabilities and long-term liabilities	4,774	(1,413)
Net cash provided by operating activities	139,622	98,609
Cash flows from investing activities:
Business acquisitions, net of cash acquired	0	(237,716)
Asset acquisition	0	(12,956)
Purchases of property, plant and equipment, net	(17,294)	(15,531)
Purchases of intangible assets	(3,045)	(259)
Purchase of non-marketable equity securities	(950)	(10,000)
Purchases of short-term investments	(13,096)	(128,718)
Proceeds from sales of short-term investments	4,455	77,287
Proceeds from maturities of short-term investments	38,436	21,292
Net cash provided by (used in) investing activities	8,506	(306,601)
Cash flows from financing activities:
Proceeds from issuance of common stock	9,389	5,154
Repurchases of common stock	(87,486)	(58,312)
Payment of capital lease obligations	(581)	(587)
Proceeds of Initial Term B Loan, net of discount and issuance costs	0	194,252
Principal payments of long-term bank loan	(990)	(1,000)
Payment of contingent consideration	(2,790)	0
Net cash provided by (used in) financing activities	(82,458)	139,507
Effect of exchange rates on cash and cash equivalents	(1,898)	1,828
Net increase (decrease) in cash and cash equivalents	63,772	(66,657)
Cash and cash equivalents at beginning of period	136,873	214,554
Cash and cash equivalents at end of period	200,645	147,897
Non-cash investing and financing activities:
Additions to property, plant and equipment included in accounts payable	661	1,109
Additions to intangible assets included in accounts payable and other accrued liabilities	12,605	4,768
Fair value of partially vested employee equity awards related to pre-combination services that were assumed as part of the business acquisition	0	3,400
Contingent consideration in connection with the asset acquisition included in other accrued liabilities and other long-term liabilities	$ 0	$ 4,080