EARNINGS PER SHARE - Reconciliation used in Computing Basic and Diluted Net Income (Loss) per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	1 Months Ended	3 Months Ended		6 Months Ended
	Jul. 31, 2024	Oct. 31, 2024	Jun. 30, 2023	Oct. 31, 2024	Jun. 30, 2023
Numerator for basic earnings per share:
Net income attributable to Immersion stockholders	$ 323	$ 27,157	$ 7,028	$ 54,317	$ 15,306
Denominator:
Weighted-average shares outstanding, basic	31,970	32,222	32,583	32,093	32,474
Shares related to outstanding options, unvested RSUs, RSAs, and PSUs	730	695	227	796	365
Weighted average shares outstanding, diluted	32,700	32,917	32,810	32,889	32,839
Net income per share attributable to Immersion stockholders
Basic	$ 0.01	$ 0.84	$ 0.22	$ 1.69	$ 0.47
Diluted	$ 0.01	$ 0.83	$ 0.21	$ 1.65	$ 0.47