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
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 2
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275

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

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

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Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267

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Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (a)
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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Amount of increase (decrease) from adjustments after acquisition date under purchase accounting of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 25
-Paragraph 16
-URI http://asc.fasb.org/extlink&oid=34752592&loc=d3e961-128460

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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Amount of increase (decrease) from foreign currency translation adjustments of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
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Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues.

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BALANCE SHEET ITEMS (Details 2) $ in Thousands	9 Months Ended
BALANCE SHEET ITEMS (Details 2) $ in Thousands	Dec. 31, 2015 USD ($) segment	Sep. 28, 2015 USD ($)	Jun. 29, 2015 USD ($)	Mar. 31, 2015 USD ($)
Goodwill [Line Items]
Number of operating segments \| segment	4
Activity in goodwill account
Balance, beginning of the year	$ 333,631
Additions	587,233
Purchase accounting adjustments	125
Foreign currency translation adjustments	(4,755)
Balance, end of the period	916,234
Gross carrying amount	533,401			$ 173,838
Accumulated Amortization	(132,618)			(92,294)
Total amortization expense	400,783			81,544
HRS
Activity in goodwill account
Balance, beginning of the year	93,138
Additions	330,346
Purchase accounting adjustments	125
Foreign currency translation adjustments	(4,755)
Balance, end of the period	418,854
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	253,312
Purchase accounting adjustments	0
Foreign currency translation adjustments	0
Balance, end of the period	317,533
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	258,079			133,853
Accumulated Amortization	(102,202)			(80,506)
Total amortization expense	155,877			53,347
Licenses and other intangibles
Activity in goodwill account
Gross carrying amount	275,322			39,985
Accumulated Amortization	(30,416)			(11,788)
Total amortization expense	$ 244,906			$ 28,197
Mirror Controls International \| Customer-related intangibles
Activity in goodwill account
Gross carrying amount			$ 75,500
Mirror Controls International \| Licenses and other intangibles
Activity in goodwill account
Gross carrying amount			$ 161,300
Nextracker \| Customer-related intangibles
Activity in goodwill account
Gross carrying amount		$ 44,600
Nextracker \| Licenses and other intangibles
Activity in goodwill account
Gross carrying amount		$ 55,900