Note 10 - Goodwill and Intangible Assets (Tables)

12 Months Ended

Mar. 30, 2014

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Goodwill [Table Text Block]

	March 30, 2014		March 31, 2013
Beginning balance	$	10,356	$	3,184
Goodwill additions		20,054		7,172
Ending balance	$	30,410	$	10,356

Schedule of Finite-Lived Intangible Assets [Table Text Block]

	March 30, 2014										March 31, 2013
	Carrying Amount		Impair- ment			Accumulated Amortization			Net Carrying Amount		Carrying Amount		Accumulated Amortization			Net Carrying Amount
Amortized intangible assets:
Existing technology	$	64,678	$	(1,635	)	$	(37,510	)	$	25,533	$	42,858	$	(30,668	)	$	12,190
Customer relationships		6,095		—			(2,762	)		3,333		2,905		(2,079	)		826
Patents/Core technology		3,459		—			(3,378	)		81		3,459		(3,182	)		277
Distributor relationships		1,264		—			(1,260	)		4		1,264		(1,219	)		45
Tradenames		210		—			(51	)		159		—		—			—
Total intangible assets subject to amortization		75,706		(1,635	)		(44,961	)		29,110		50,486		(37,148	)		13,338
In-process research and development		2,280		—			—			2,280		—		—			—
Total	$	77,986	$	(1,635	)	$	(44,961	)	$	31,390	$	50,486	$	(37,148	)	$	13,338

Finite-lived Intangible Assets Amortization Expense [Table Text Block]

	March 30, 2014		March 31, 2013		April 1, 2012
Amortization expense	$	7,813	$	4,150	$	6,700

Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block]

Amortization Expense (by fiscal year)
2015	$	6,159
2016		5,578
2017		4,645
2018		4,432
2019		3,231
2020 and thereafter		5,065
Total future amortization excluding IPR&D	$	29,110