STOCK-BASED COMPENSATION - Summary of Stock-based Compensation Expenses (Details) - USD ($) $ in Thousands	3 Months Ended
	Jul. 31, 2026	Jul. 31, 2025
Immersion
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Share-based compensation, total	$ 954	$ 1,998
Immersion \| Location, Statement of Income, Balance [Axis]: us-gaap:SellingGeneralAndAdministrativeExpense
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Share-based compensation, total	954	1,998
Immersion \| RSUs, RSAs and PSUs
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Share-based compensation, total	954	1,998
Barnes & Noble Education, Inc.
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Share-based compensation, total	1,084	2,480
Barnes & Noble Education, Inc. \| Location, Statement of Income, Balance [Axis]: us-gaap:SellingGeneralAndAdministrativeExpense
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Share-based compensation, total	1,084	2,480
Barnes & Noble Education, Inc. \| Employee Stock Option
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Share-based compensation, total	3	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	$ 1,081	$ 2,480