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STOCK-BASED COMPENSATION - Summary of Stock-based Compensation Expenses (Details) - USD ($) $ in Thousands | 3 Months Ended
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Jul. 31, 2025 | Jul. 31, 2024
Employee Stock Option |  |
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] |  |
Share-based compensation, total | $ 0 | $ 0
Immersion |  |
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] |  |
Share-based compensation, total | 1,998 | 1,472
Immersion | Selling and administrative expenses |  |
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] |  |
Share-based compensation, total | 1,998 | 1,472
Immersion | RSUs, RSAs and PSUs |  |
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] |  |
Share-based compensation, total | 1,998 | 1,472
Barnes & Noble Education, Inc. |  |
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] |  |
Share-based compensation, total | 2,480 | (187)
Barnes & Noble Education, Inc. | Selling and administrative expenses |  |
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] |  |
Share-based compensation, total | 2,480 | (187)
Barnes & Noble Education, Inc. | Employee Stock Option |  |
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] |  |
Share-based compensation, total | 0 | 0
Barnes & Noble Education, Inc. | RSUs, RSAs and PSUs |  |
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] |  |
Share-based compensation, total | $ 2,480 | $ (187)

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