Restructuring and Other Expense (Income), Net - Additional Information (Detail) - USD ($) $ in Thousands		6 Months Ended
Nov. 01, 2019	Nov. 30, 2019
Restructuring Cost and Reserve [Line Items]
Net loss on sale of assets		$ 431
Other Non-significant Restructuring Activities
Restructuring Cost and Reserve [Line Items]
Facility exit costs reduction		(26)
Cabs Joint Venture
Restructuring Cost and Reserve [Line Items]
Net gain on deconsolidation	$ 50
Cryogenics
Restructuring Cost and Reserve [Line Items]
Net proceeds from sale of business		8,295
Net loss on sale of assets		$ 481

Amount of gain (loss) from remeasurement to fair value of retained investment in former subsidiary and group of assets constituting business or nonprofit activity deconsolidated and derecognized, excluding conveyance of oil and gas mineral rights and transfer of product or service in contract with customer.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 1B
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=109239629&loc=SL4582445-111684

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Amount of gain (loss) on sale or disposal of property, plant and equipment assets, including oil and gas property and timber property.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
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The cash inflow associated with the amount received from the sale of a portion of the company's business, for example a segment, division, branch or other business, during the period.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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-Topic 230
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-Section 45
-Paragraph 12
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Increase decrease in facility exit costs.

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