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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.

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Amount of fees and commissions from financial services and banking activities and correspondent clearing. Includes fees from depositor accounts, credit cards, merchant discounts, and fiduciary and trust activities, guarantee fees, investment advisory, management, and administrative fees, transfer agent fees, and insurance commissions.

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Certain Relationships and Related Transactions - Additional Information (Detail) $ in Thousands	12 Months Ended
	Apr. 28, 2018 USD ($) Location	Apr. 29, 2017 USD ($)	Apr. 30, 2016 USD ($)
Transactions with Third Party [Line Items]
Recruiting consultation fees	$ 253	$ 64
Corporate Office
Transactions with Third Party [Line Items]
Number of location leased \| Location	2
Annual rent	$ 10,503	9,637	$ 7,784
Office And Warehouse Facilities
Transactions with Third Party [Line Items]
Annual rent			456
Ownership interest by related parties	50.00%
Payment for rent			179
MBS
Transactions with Third Party [Line Items]
Sales of books		0	2
Commission outstanding		$ 480
Supply agreement term		10 years
Purchases of books and others		$ 8,328	7,092
MBS \| B&N.com
Transactions with Third Party [Line Items]
Commission earned		198	268
Payment for commissions		47	68
TXTB and MBS Direct \| B&N.com
Transactions with Third Party [Line Items]
Payment for commissions		645	515
Outstanding amounts payable		5	0
LR Enterprises
Transactions with Third Party [Line Items]
Aircraft time-sharing and operating costs	$ 185	$ 153	63
Argix
Transactions with Third Party [Line Items]
Ownership interest by related parties	20.00%
Freight and transportation costs			$ 19,102