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ACQUISITIONS (Details) - USD ($) $ in Millions			3 Months Ended		6 Months Ended
	Oct. 03, 2017	Jul. 27, 2017	Oct. 28, 2017	Oct. 29, 2016	Oct. 28, 2017	Oct. 29, 2016
Business Acquisition [Line Items]
Cash paid, net of cash acquired					$ 129.9	$ 0.0
Net loss			$ 24.2	$ 24.9	44.7	$ 45.9
Procoplast
Business Acquisition [Line Items]
Percentage acquired		100.00%
Cash paid, net of cash acquired		$ 22.2
Goodwill purchase accounting adjustments			(0.9)
Acquisition-related costs incurred					1.3
Pacific Insight
Business Acquisition [Line Items]
Percentage acquired	100.00%
Cash paid, net of cash acquired	$ 107.7
Acquisition-related costs incurred			4.0		5.5
Revenues			7.0		7.0
Net loss			(0.2)		(0.2)
Cost of Products Sold | Procoplast
Business Acquisition [Line Items]
Acquisition-related costs incurred			0.2		0.2
Cost of Products Sold | Pacific Insight
Business Acquisition [Line Items]
Acquisition-related costs incurred			0.6		0.6
Selling, General and Administrative Expenses | Procoplast
Business Acquisition [Line Items]
Acquisition-related costs incurred					1.1
Selling, General and Administrative Expenses | Pacific Insight
Business Acquisition [Line Items]
Acquisition-related costs incurred			$ 3.4		$ 4.9

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Percentage of voting equity interests acquired at the acquisition date in the business combination.

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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.

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