Certain Relationships and Related Transactions - Additional Information (Detail) $ in Thousands	12 Months Ended
Apr. 27, 2019 USD ($) Location	Apr. 28, 2018 USD ($)	Apr. 29, 2017 USD ($)
Corporate Office
Transactions with Third Party [Line Items]
Number of location leased \| Location	2
Annual rent	$ 10,649	$ 10,503	$ 9,637
LR Enterprises
Transactions with Third Party [Line Items]
Aircraft time-sharing and operating costs	147	185	$ 153
Live Ramp Holding
Transactions with Third Party [Line Items]
Consultacy fees paid for onboarding services	$ 165	$ 0

Number of Locations

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- Definition

Transactions with Third Party [Line Items]

+ References

No definition available.

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- Definition

Expenses incurred related to the lease of aircraft from outside third parties that are used in the entity's business operations and direct costs incurred at airports primarily consisting of fees paid to the airport authority for takeoff and landing, gate and facility fees, and other related fees.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.2(e))
-URI http://asc.fasb.org/extlink&oid=115205541&loc=SL114868664-224227

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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.

+ Details

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- Definition

A fee charged for services from professionals such as doctors, lawyers and accountants. The term is often expanded to include other professions, for example, pharmacists charging to maintain a medicinal profile of a client or customer.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 946
-SubTopic 220
-Section S99
-Paragraph 1
-Subparagraph (SX 210.6-07.2(a),(b),(c),(d))
-URI http://asc.fasb.org/extlink&oid=114873854&loc=SL114874292-224272

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 946
-SubTopic 220
-Section 45
-Paragraph 3
-Subparagraph (k)
-URI http://asc.fasb.org/extlink&oid=114873831&loc=SL114874205-224268

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