EBook Settlement - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
Apr. 29, 2017	Apr. 30, 2016
Loss Contingencies [Line Items]
Redemptions receivable from Apple	$ 2,478	$ 53,809
Apple Inc \| Antitrust Lawsuit on Price of Digital Books
Loss Contingencies [Line Items]
Credit settlement amount	95,707
Redemptions receivable from Apple	2,478
Customer redemptions liability	60,844
Activated credit amount	59,232
Credit redeemed	$ 52,687

Redemptions Receivable

No definition available.

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- Definition

Current regulatory liabilities generally represent obligations to make refunds to customers for various reasons including overpayment.

+ References

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- Definition

Amount of cash inflow from customers for revenue related transactions that are refundable to the customers and do not meet the criteria for revenue recognition.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 25
-Subparagraph (a)
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-Publisher FASB
-Name Accounting Standards Codification
-Topic 605
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-Section S99
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- Definition

Amount of cash outflow to customers for refund payments.

+ References

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- Definition

Amount awarded to other party in judgment or settlement of litigation.

+ References

No definition available.

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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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