Area of leased property.

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- Definition

Defense and administrative costs.

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- Definition

Estimated building cost of lease contract.

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- Definition

Estimated expenses related to material handling equipment, information technology systems and other capital projects.

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- Definition

Estimated project cost to be recorded as right of use asset.

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- Definition

Gain from changes in product liability provisions.

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No definition available.

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- Definition

Number of other product liability claims.

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No definition available.

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- Definition

Number of product liability cases.

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No definition available.

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- Definition

Schedule of commitments and contingencies.

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No definition available.

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- Definition

Carrying value of the obligation (known or estimated) arising from requirements to perform activities to remediate one or more sites, payable after twelve months or beyond the next operating cycle if longer.

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- Definition

Amount equal to the present value (the principal) at the beginning of the lease term of minimum lease payments during the lease term (excluding that portion of the payments representing executory costs such as insurance, maintenance, and taxes to be paid by the lessor, together with any profit thereon) net of payments or other amounts applied to the principal, through the balance sheet date and due to be paid more than one year (or one operating cycle, if longer) after the balance sheet date.

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- Definition

Amount of structure or a modification to a structure under construction. Includes recently completed structures or modifications to structures that have not been placed into service.

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-Publisher FASB
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- Definition

The amount recovered from insurance. These recoveries reduce costs and losses that are reported as a separate line item under operating expenses.

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-Name Accounting Standards Codification
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- Definition

Amount of rent expense incurred for leased assets, including but not limited to, furniture and equipment, that is not directly or indirectly associated with the manufacture, sale or creation of a product or product line.

+ References

No definition available.

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- Definition

Amount of litigation expense, including but not limited to legal, forensic, accounting, and investigative fees.

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No definition available.

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- Definition

The value (monetary amount) of the award the plaintiff seeks in the legal matter.

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- Definition

The amount of loss reported during the period pertaining to product liability.

+ References

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Commitments and Contingencies - Additional Information (Detail)	12 Months Ended
	Apr. 30, 2018 USD ($) ft² Case Claim	Apr. 30, 2017 USD ($)	Apr. 30, 2016 USD ($)
Schedule Of Commitments And Contingencies [Line Items]
Number of Product liability cases \| Case	5
Number of Other product liability claims \| Claim	10
Defense and administrative costs	$ 473,000	$ 254,000	$ 264,000
Settlement fees related to product liability cases	129,000	209,000	55,000
Gain from changes in product liability provisions		364,000
Expense related to changes in product liability and municipal litigation liability	540,000		299,000
Environmental reserve in non-current liabilities	1,000,000	730,000
Construction in progress	29,114,000	6,535,000
Rent expense	$ 5,200,000	$ 4,400,000	4,100,000
Ryan Boone County, LLC \| Logistics Facility in Columbia \| Missouri
Schedule Of Commitments And Contingencies [Line Items]
Area of leased property \| ft²	633,000
Ryan Boone County, LLC \| Logistics Facility in Columbia \| Property, Plant, and Equipment \| Missouri
Schedule Of Commitments And Contingencies [Line Items]
Construction in progress	$ 22,000,000
Ryan Boone County, LLC \| Logistics Facility in Columbia \| Other Non-current Liabilities \| Missouri
Schedule Of Commitments And Contingencies [Line Items]
Capital lease payable	22,000,000
General and Administrative Expense
Schedule Of Commitments And Contingencies [Line Items]
Insurance recovery as a result of an insurance settlement agreement			$ 1,800,000
Minimum
Schedule Of Commitments And Contingencies [Line Items]
Compensatory damages sought	75,000
Minimum \| Ryan Boone County, LLC \| Logistics Facility in Columbia \| Missouri
Schedule Of Commitments And Contingencies [Line Items]
Estimated total cost of the building	45,000,000
Estimated project cost to be recorded as right of use asset	30,000,000
Estimated expenses related to material handling equipment, information technology systems and other capital projects	25,000,000
Maximum
Schedule Of Commitments And Contingencies [Line Items]
Compensatory damages sought	350,000
Maximum \| Ryan Boone County, LLC \| Logistics Facility in Columbia \| Missouri
Schedule Of Commitments And Contingencies [Line Items]
Estimated total cost of the building	50,000,000
Estimated project cost to be recorded as right of use asset	35,000,000
Estimated expenses related to material handling equipment, information technology systems and other capital projects	$ 30,000,000