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GOODWILL AND INTANGIBLE ASSETS - Narrative (Details) - USD ($) $ in Millions | Oct. 03, 2017 | Jul. 27, 2017 | Oct. 28, 2017 | Apr. 29, 2017
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Goodwill [Line Items] |  |  |  |
Goodwill |  |  | $ 66.8 | $ 1.6
Trade names not subject to amortization |  |  | $ 1.8 | $ 1.8
Procoplast |  |  |  |
Goodwill [Line Items] |  |  |  |
Goodwill |  | $ 15.4 |  |
Intangible assets acquired |  | $ 12.0 |  |
Procoplast | Customer Relationships and Agreements |  |  |  |
Goodwill [Line Items] |  |  |  |
Amortization period |  | 10 years |  |
Pacific Insight |  |  |  |
Goodwill [Line Items] |  |  |  |
Goodwill | $ 51.2 |  |  |
Intangible assets acquired | $ 40.8 |  |  |
Amortization period | 10 years |  |  |
Pacific Insight | Customer Relationships and Agreements |  |  |  |
Goodwill [Line Items] |  |  |  |
Intangible assets acquired | $ 29.0 |  |  |
Pacific Insight | Technology Licenses |  |  |  |
Goodwill [Line Items] |  |  |  |
Intangible assets acquired | 6.1 |  |  |
Pacific Insight | Trade Names |  |  |  |
Goodwill [Line Items] |  |  |  |
Intangible assets acquired | $ 5.7 |  |  |

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