Intangibles (Details) - USD ($) $ in Thousands	Oct. 27, 2018	Apr. 30, 2018
Intangibles
Intangibles, gross	$ 1,770	$ 1,582
Less accumulated amortization	(1,104)	(954)
Intangibles, net	666	628
Licenses
Intangibles
Intangibles, gross	1,006	818
Customer relationships
Intangibles
Intangibles, gross	733	733
Trademarks and tradenames
Intangibles
Intangibles, gross	28	28
Other
Intangibles
Intangibles, gross	$ 3	$ 3

Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 2
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275

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- Definition

Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 928
-SubTopic 340
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6473545&loc=d3e61844-108004

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

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