Condensed Consolidated Statements of Cash Flows (Unaudited) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Sep. 28, 2014	Sep. 29, 2013
Cash flows from operating activities:
Net income (loss)	$ (35,494)	$ 7,288
Reconciliation of net income (loss) to net cash provided by (used in) operating activities:
Depreciation and amortization	8,570	6,171
Impairment of Intangibles	12,284
Restructuring charges and exit costs	6,966
Stock-based compensation expense	6,727	4,710
Release of deferred tax valuation allowance	828	(6,770)
Net change in fair value of contingent consideration	(4,343)	(2,495)
Changes in operating assets and liabilities, net of effect of acquisitions:
Accounts receivable and accounts receivable, related party	492	(4,230)
Inventories	(573)	1,345
Other current and non-current assets	(1,025)	(427)
Accounts payable	(2,469)	2,807
Accrued compensation and related benefits	(1,339)	77
Other current and non-current liabilities	(4,001)	(3,256)
Deferred income and allowance to distributors including related party	3,280	(668)
Net cash provided by (used in) operating activities	(10,097)	4,552
Cash flows from investing activities:
Purchases of property, plant and equipment and intellectual property, net	(656)	(749)
Purchases of short-term marketable securities	(9,296)	(116,589)
Proceeds from maturities of short-term marketable securities	3,997	18,589
Proceeds from sales of short-term marketable securities	158,412	113,618
Restricted cash	(26,000)	0
Other disposal activities		125
Net cash provided by (used in) investing activities	53,798	(8,117)
Cash flows from financing activities:
Proceeds from issuance of common stock	2,542	2,897
Purchase of stock for withholding taxes on vested restricted stock	(611)	(1,018)
Proceeds from issuance of debt	91,000	0
Repayment of debt	(65,000)	0
Repurchase of common stock	(6,864)	(1,999)
Payments of lease financing obligations	(1,005)	(982)
Net cash provided by (used in) financing activities	20,062	(1,102)
Net increase (decrease) in cash and cash equivalents	63,763	(4,667)
Cash and cash equivalents at the beginning of period	14,614	14,718
Cash and cash equivalents at the end of period	78,377	10,051
Supplemental disclosure of cash flow and non-cash information:
Cash paid for income tax	62	66
Cash paid for (received from) interest	(466)	78
Release of restricted stock upon vesting	408	0
Integrated Memory Logic Limited [Member]
Cash flows from investing activities:
Acquisition of Integrated Memory Logic, net of cash acquired	(72,659)	0
Supplemental disclosure of cash flow and non-cash information:
Reclassification of non-controlling interest as liability upon close of iML acquisition	18883.00%
Cadeka Microcircuits [Member]
Cash flows from investing activities:
Acquisition of Integrated Memory Logic, net of cash acquired		(23,111)
Supplemental disclosure of cash flow and non-cash information:
Issuance of common stock in connection with Cadeka acquisition		$ 5,005