INCOME TAXES - Narrative (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2021
Income Tax Contingency [Line Items]
Provision (benefit) for income taxes	$ 3,642	$ 2,807	$ (387)
Undistributed earnings of foreign subsidiaries	2,600	2,700	12,900
Deferred tax benefit	0	0	1,253
Deferred tax assets, valuation allowance	368,408	360,274
Operating loss carryforwards	1,118,700
Operating loss carryforwards, subject to expiration	335,500
Operating loss carryforward, indefinitely	783,200
Unrecognized tax benefits	10,811	10,113	9,850	$ 7,053
Accrued penalties and interest	200	$ 100
Domestic
Income Tax Contingency [Line Items]
Research tax credit carryforwards	16,800
State and local
Income Tax Contingency [Line Items]
Operating loss carryforwards	915,800
Research tax credit carryforwards	$ 23,400
Fuze
Income Tax Contingency [Line Items]
Deferred tax benefit			$ (1,200)