BALANCE SHEET ITEMS (Details 2) $ in Thousands	6 Months Ended
Sep. 25, 2015 USD ($) segment	Mar. 31, 2015 USD ($)
Goodwill [Line Items]
Number of operating segments \| segment	4
Activity in goodwill account
Balance, beginning of the year	$ 333,631
Additions	299,165
Purchase accounting adjustments	125
Foreign currency translation adjustments	(5,562)
Balance, end of the period	627,359
Gross Carrying Amount	469,946	$ 173,838
Accumulated Amortization	(115,467)	(92,294)
Total amortization expense	354,479	81,544
HRS
Activity in goodwill account
Balance, beginning of the year	93,138
Additions	292,608
Purchase accounting adjustments	125
Foreign currency translation adjustments	(5,562)
Balance, end of the period	380,309
CTG
Activity in goodwill account
Balance, beginning of the year	68,234
Additions	0
Purchase accounting adjustments	0
Foreign currency translation adjustments	0
Balance, end of the period	68,234
IEI
Activity in goodwill account
Balance, beginning of the year	64,221
Additions	2,982
Purchase accounting adjustments	0
Foreign currency translation adjustments	0
Balance, end of the period	67,203
INS
Activity in goodwill account
Balance, beginning of the year	108,038
Additions	3,575
Purchase accounting adjustments	0
Foreign currency translation adjustments	0
Balance, end of the period	111,613
Customer-related intangibles
Activity in goodwill account
Gross Carrying Amount	279,204	133,853
Accumulated Amortization	(93,401)	(80,506)
Total amortization expense	185,803	53,347
Licenses and other intangibles
Activity in goodwill account
Gross Carrying Amount	190,742	39,985
Accumulated Amortization	(22,066)	(11,788)
Total amortization expense	168,676	$ 28,197
Mirror Controls International
Activity in goodwill account
Balance, end of the period	290,478
Mirror Controls International \| Customer-related intangibles
Activity in goodwill account
Gross Carrying Amount	131,400
Mirror Controls International \| Licenses and other intangibles
Activity in goodwill account
Gross Carrying Amount	$ 148,600

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

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

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