BALANCE SHEET ITEMS (Details 3) (USD $) In Thousands, unless otherwise specified	Jun. 28, 2013	Mar. 31, 2013
Components of acquired intangible assets
Gross Carrying Amount	$ 319,751	$ 315,350
Accumulated Amortization	(237,071)	(233,803)
Net Carrying Amount	82,680	81,547
Estimated future annual amortization expense for acquired intangible assets
2014	20,509
2015	24,547
2016	19,889
2017	10,847
2018	5,179
Thereafter	1,709
Net Carrying Amount	82,680	81,547
Customer-related intangibles
Components of acquired intangible assets
Gross Carrying Amount	298,711	294,310
Accumulated Amortization	(227,037)	(224,517)
Net Carrying Amount	71,674	69,793
Estimated future annual amortization expense for acquired intangible assets
Net Carrying Amount	71,674	69,793
Licenses and other intangibles
Components of acquired intangible assets
Gross Carrying Amount	21,040	21,040
Accumulated Amortization	(10,034)	(9,286)
Net Carrying Amount	11,006	11,754
Estimated future annual amortization expense for acquired intangible assets
Net Carrying Amount	$ 11,006	$ 11,754