Condensed Consolidated Statements of Cash Flows (Unaudited) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Dec. 28, 2014	Dec. 29, 2013
Cash flows from operating activities:
Net income (loss)	$ (42,093)	$ 5,654
Depreciation and amortization	13,325	9,386
Impairment of Intangibles	12,284
Restructuring charges and exit costs	6,732	(1,279)
Stock-based compensation expense	10,949	7,267
Release of deferred tax valuation allowance	828	(6,770)
Net change in fair value of contingent consideration	(4,343)	(2,437)
Changes in operating assets and liabilities, net of effect of acquisitions:
Accounts receivable and accounts receivable, related party	(1,125)	(7,155)
Inventories	(3,506)	(3,764)
Other current and non-current assets	(1,087)	(558)
Accounts payable	(2,945)	4,849
Accrued compensation and related benefits	(231)	659
Other current and non-current liabilities	(5,380)	(4,713)
Deferred income and allowance to distributors including related party	581	(1,996)
Net cash used in operating activities	(16,011)	(857)
Cash flows from investing activities:
Purchases of property, plant and equipment and intellectual property, net	(2,447)	(1,675)
Purchases of short-term marketable securities	(9,296)	(166,738)
Proceeds from maturities of short-term marketable securities	3,997	24,410
Proceeds from sales of short-term marketable securities	158,412	178,167
Other disposal activities		125
Net cash provided by investing activities	59,124	11,178
Cash flows from financing activities:
Proceeds from issuance of common stock	4,530	3,971
Purchase of stock for withholding taxes on vested restricted stock	(629)	(1,042)
Proceeds from issuance of debt	91,000
Repayment of debt	(91,000)
Repurchase of common stock	(7,999)	(4,000)
Payments of lease financing obligations	(1,007)	(2,898)
Net cash used in financing activities	(5,105)	(3,969)
Net increase in cash and cash equivalents	38,008	6,352
Cash and cash equivalents at the beginning of period	14,614	14,718
Cash and cash equivalents at the end of period	52,622	21,070
Supplemental disclosure of cash flow and non-cash information:
Cash paid for income tax	104	119
Cash paid for interest	1,041	863
Engineering design tool acquired under capital lease	2,924
Release of restricted stock upon vesting	408
Integrated Memory Logic Limited [Member]
Cash flows from investing activities:
Acquisition, net of cash acquired	(91,542)
Cadeka Microcircuits [Member]
Cash flows from investing activities:
Acquisition, net of cash acquired		(23,111)
Supplemental disclosure of cash flow and non-cash information:
Issuance of common stock in connection with Cadeka acquisition		$ 5,117