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Leases (Details) $ in Thousands	3 Months Ended	9 Months Ended
	Feb. 01, 2020 USD ($)	Feb. 01, 2020 USD ($)
Lessee, Lease, Description [Line Items]
Operating lease cost	$ 886	$ 2,748
Weighted average remaining lease term (years)	5 years 1 month	5 years 1 month
Weighted average discount rate (percent)	3.50%	3.50%
Operating lease payments	$ 823	$ 2,426
Minimum
Lessee, Lease, Description [Line Items]
Term of lease (years)	1 year	1 year
Maximum
Lessee, Lease, Description [Line Items]
Term of lease (years)	5 years	5 years

X

- Definition

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+ References

No definition available.

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- Definition

Term of lessee's operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 50
-Paragraph 3
-Subparagraph (a)(3)
-URI http://asc.fasb.org/extlink&oid=77888426&loc=SL77918673-209980

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Amount of single lease cost, calculated by allocation of remaining cost of lease over remaining lease term. Includes, but is not limited to, single lease cost, after impairment of right-of-use asset, calculated by amortization of remaining right-of-use asset and accretion of lease liability.

+ References

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-Publisher FASB
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Amount of cash outflow from operating lease, excluding payments to bring another asset to condition and location necessary for its intended use.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
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Weighted average discount rate for operating lease calculated at point in time.

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-Publisher FASB
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Weighted average remaining lease term for operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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