Summary of Impact of Adoption of New Accounting Pronouncements on Balance Sheets (Detail) - USD ($) $ in Thousands	Apr. 27, 2019	Apr. 28, 2018
Assets
Prepaid expenses and other current assets	$ 69,807	$ 65,153
Liabilities and Shareholders' Equity
Accrued liabilities	268,143	260,209
Gift card liabilities	215,459	323,465
Deferred taxes	70,261	52,044
Retained earnings	(186,823)	(216,236)
Calculated under Revenue Guidance in Effect before Topic 606 \| ASU 2014-09
Assets
Prepaid expenses and other current assets	70,050
Liabilities and Shareholders' Equity
Accrued liabilities	267,521
Gift card liabilities	296,776	323,465
Deferred taxes	50,158
Retained earnings	(248,903)
Difference between Revenue Guidance in Effect before and after Topic 606 \| ASU 2014-09
Assets
Prepaid expenses and other current assets	(243)
Liabilities and Shareholders' Equity
Accrued liabilities	622
Gift card liabilities	(81,317)	$ (90,147)
Deferred taxes	20,103
Retained earnings	$ 62,080

Carrying value as of the balance sheet date of obligations incurred and payable, pertaining to costs that are statutory in nature, are incurred on contractual obligations, or accumulate over time and for which invoices have not yet been received or will not be rendered. Examples include taxes, interest, rent and utilities. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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Carrying value as of the balance sheet date of the liability for outstanding gift cards. Retail customers purchase gift cards or gift certificates that can be redeemed at a later date for merchandise or services; those unredeemed represent a liability of the entity because the revenue is being deferred.

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Amount of asset related to consideration paid in advance for costs that provide economic benefits in future periods, and amount of other assets that are expected to be realized or consumed within one year or the normal operating cycle, if longer.

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