GOODWILL AND INTANGIBLE ASSETS (Tables)

9 Months Ended

Dec. 30, 2012

Purchased Intangible Assets

Our purchased intangible assets as of the dates indicated below were as follows (in thousands):

	December 30, 2012							April 1, 2012
	Carrying Amount		Accumulated Amortization			Net Carrying Amount		Carrying Amount		Accumulated Amortization			Net Carrying Amount
Existing technology	$	35,318	$	(29,829	)	$	5,489	$	34,848	$	(27,286	)	$	7,562
Patents/Core technology		3,459		(3,133	)		326		3,736		(2,855	)		881
Distributor relationships		1,264		(1,194	)		70		1,264		(1,119	)		145
Customer relationships		2,905		(1,997	)		908		2,905		(1,751	)		1,154
Tradenames/Trademarks		1,025		(1,025	)		—		1,025		(1,012	)		13
Total	$	43,971	$	(37,178	)	$	6,793	$	43,778	$	(34,023	)	$	9,755

Aggregate Amortization Expenses for Our Purchased Intangible Assets

The aggregate amortization expenses for our purchased intangible assets for the periods indicated below were as follows (in thousands):

	Three Months Ended				Nine Months Ended
	December  30, 2012		January  1, 2012		December  30, 2012		January  1, 2012
Amortization expense	$	994	$	1,271	$	3,155	$	3,801

Estimated Future Amortization Expenses for Our Purchased Intangible Assets

The estimated future amortization expenses for our purchased intangible assets are summarized below (in thousands):

Amortization Expense (by fiscal year)
2013 (3 months remaining)	$	994
2014		3,540
2015		1,313
2016		722
2017		195
Thereafter		29
Total estimated amortization	$	6,793