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GOODWILL AND INTANGIBLE ASSETS - Narrative (Details) - USD ($) $ in Millions	Oct. 03, 2017	Jul. 27, 2017	Jan. 27, 2018	Apr. 29, 2017
Goodwill [Line Items]
Goodwill			$ 59.6	$ 1.6
Trade names not subject to amortization			$ 1.8	$ 1.8
Procoplast
Goodwill [Line Items]
Goodwill		$ 8.1
Intangible assets acquired		19.2
Procoplast | Technology Licenses
Goodwill [Line Items]
Intangible assets acquired		$ 2.1
Amortization period		8 years 6 months
Procoplast | Trade Names
Goodwill [Line Items]
Intangible assets acquired		$ 2.0
Amortization period		8 years 6 months
Pacific Insight
Goodwill [Line Items]
Goodwill	$ 48.5
Intangible assets acquired	41.8
Pacific Insight | Technology Licenses
Goodwill [Line Items]
Intangible assets acquired	$ 1.6
Amortization period	6 years
Pacific Insight | Trade Names
Goodwill [Line Items]
Intangible assets acquired	$ 6.4
Amortization period	7 years 6 months

X

- Definition

The amount of identifiable intangible assets recognized as of the acquisition date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 55
-Paragraph 37
-URI http://asc.fasb.org/extlink&oid=73531372&loc=d3e2207-128464

Reference 2: http://www.xbrl.org/2003/role/presentationRef
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-Topic 805
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-Section 50
-Paragraph 1
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-URI http://asc.fasb.org/extlink&oid=73530397&loc=d3e4845-128472

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- Definition

Remaining amortization period of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

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- Definition

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
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267

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-Name Accounting Standards Codification
-Topic 350
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-Section 45
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- Definition

Carrying amount (original costs adjusted for previously recognized amortization and impairment) as of the balance sheet date for the rights acquired through registration of a trade name to gain or protect exclusive use thereof for a projected indefinite period of benefit.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 2
-Subparagraph (b)
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