REVENUE RECOGNITION - Deferred Revenue (Details) - USD ($) $ in Thousands	6 Months Ended
	Oct. 31, 2024	Jun. 30, 2023
Immersion Corporation [Member]
Movement in Deferred Revenue [Roll Forward]
Deferred revenue at April 30, 2024	$ 20,472	$ 17,395
Additions to deferred revenue during the period	1,312	0
Reductions to deferred revenue for revenue recognized during the period	(11,566)	(2,387)
Deferred revenue balance at October 31, 2024	10,218	15,008
Balance Sheet classification:
Deferred revenue balance at the end of period:	10,218	$ 15,008
Barnes and Noble Education, Inc. [Member]
Movement in Deferred Revenue [Roll Forward]
Deferred revenue at April 30, 2024	11,044
Additions to deferred revenue during the period	91,225
Reductions to deferred revenue for revenue recognized during the period	(61,392)
Deferred revenue balance at October 31, 2024	40,877
Balance Sheet classification:
Deferred revenue balance at the end of period:	$ 40,877