Note 9 - Goodwill and Intangible Assets (Details) - Purchased Intangible Assets (USD $) In Thousands, unless otherwise specified	Mar. 29, 2015	Mar. 30, 2014
Amortized intangible assets:
Carrying Amount	$ 147,249	$ 74,071
Accumulated Amortization	(57,472)	(44,961)
Impairment charge	(10,004)
Net Carrying Amount	79,773us-gaap_FiniteLivedIntangibleAssetsNet	29,110us-gaap_FiniteLivedIntangibleAssetsNet
Total	156,397	76,351
Total	(57,472)	(44,961)
Total	(12,823)
Total	86,102	31,390
In Process Research and Development [Member]
Amortized intangible assets:
In-process research and development	9,148	2,280
In-process research and development	(2,819)
In-process research and development	6,329	2,280
Technology-Based Intangible Assets [Member]
Amortized intangible assets:
Carrying Amount	120,041	63,043
Accumulated Amortization	(47,259)	(37,510)
Impairment charge	(9,134)
Net Carrying Amount	63,648	25,533
Total	(47,259)	(37,510)
Customer Relationships [Member]
Amortized intangible assets:
Carrying Amount	15,165	6,095
Accumulated Amortization	(4,520)	(2,762)
Impairment charge	(870)
Net Carrying Amount	9,775	3,333
Total	(4,520)	(2,762)
Distribution Rights [Member]
Amortized intangible assets:
Carrying Amount	7,254	1,264
Accumulated Amortization	(1,973)	(1,260)
Net Carrying Amount	5,281	4
Total	(1,973)	(1,260)
Patents [Member]
Amortized intangible assets:
Carrying Amount	3,459	3,459
Accumulated Amortization	(3,446)	(3,378)
Net Carrying Amount	13	81
Total	(3,446)	(3,378)
Trade Names [Member]
Amortized intangible assets:
Carrying Amount	1,330	210
Accumulated Amortization	(274)	(51)
Net Carrying Amount	1,056	159
Total	$ (274)	$ (51)

Amount of accumulated impairment loss for an finite-lived intangible assets.

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Amount of accumulated impairment loss for indefinite-lived intangible assets.

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Amount of accumulated impairment loss for intangible assets.

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Amount of assets, excluding financial assets and goodwill, lacking physical substance and having a projected indefinite period of benefit before impairment charges.

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Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

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Sum of the carrying amounts of all intangible assets, excluding goodwill, as of the balance sheet date, net of accumulated amortization and impairment charges.

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