XML 45 R34.htm IDEA: XBRL DOCUMENT v3.20.2

Revenue Recognition - Summary of Net Sales Transferred to Customers at a Point in Time and Over Time (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Oct. 31, 2020	Oct. 31, 2019	Oct. 31, 2020	Oct. 31, 2019
Disaggregation of Revenue [Line Items]
Net sales transferred to customers	$ 39,000	$ 39,722	$ 75,423	$ 79,058
Over Time
Disaggregation of Revenue [Line Items]
Net sales transferred to customers	37,178	38,088	72,623	76,372
Point in Time
Disaggregation of Revenue [Line Items]
Net sales transferred to customers	1,822	1,634	2,800	2,686
Domestic
Disaggregation of Revenue [Line Items]
Net sales transferred to customers	28,772	31,584	58,830	60,871
Domestic | Over Time
Disaggregation of Revenue [Line Items]
Net sales transferred to customers	26,950	29,950	56,030	58,185
Domestic | Point in Time
Disaggregation of Revenue [Line Items]
Net sales transferred to customers	1,822	1,634	2,800	2,686
International
Disaggregation of Revenue [Line Items]
Net sales transferred to customers	10,228	8,138	16,593	18,187
International | Over Time
Disaggregation of Revenue [Line Items]
Net sales transferred to customers	10,228	8,138	16,593	18,187
International | Point in Time
Disaggregation of Revenue [Line Items]
Net sales transferred to customers	$ 0	$ 0	$ 0	$ 0

X

- 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.

+ Details

Name:	us-gaap_DisaggregationOfRevenueLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130543-203045

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130545-203045

+ Details

Name:	us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Details

Name:	us-gaap_TimingOfTransferOfGoodOrServiceAxis=us-gaap_TransferredOverTimeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_TimingOfTransferOfGoodOrServiceAxis=us-gaap_TransferredAtPointInTimeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_GeographicDistributionAxis=us-gaap_GeographicDistributionDomesticMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_GeographicDistributionAxis=us-gaap_GeographicDistributionForeignMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: