STOCK-BASED COMPENSATION - Schedule of fair value models for the PSUs use valuation assumptions (Details) - Barnes & Noble Education, Inc. - Performance Shares	6 Months Ended
Oct. 31, 2024 $ / shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Derived service period	1 year
Tranche #1
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance Milestone (VWAP)	$ 10
Valuation method utilized	us-gaap:MonteCarloModelMember
Risk-free interest rate	3.53%
Company volatility	120.00%
Grant date fair value per award	$ 9.74
Tranche #2
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance Milestone (VWAP)	$ 15
Valuation method utilized	us-gaap:MonteCarloModelMember
Risk-free interest rate	3.53%
Company volatility	120.00%
Derived service period	2 years
Grant date fair value per award	$ 9.62
Tranche #3
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance Milestone (VWAP)	$ 20
Valuation method utilized	us-gaap:MonteCarloModelMember
Risk-free interest rate	3.53%
Company volatility	120.00%
Derived service period	3 years
Grant date fair value per award	$ 9.46

The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period.

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The risk-free interest rate assumption that is used in valuing an option on its own shares.

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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.

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Expected term of award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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