INCOME TAX - Reconciliation of Deferred Tax Assets/Liabilities (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Mar. 31, 2023
Deferred tax assets:
Accrued expenses	$ 5,849	$ 5,287
Lease liabilities	10,107	11,613
Net operating loss carryforwards	30,408	22,504
Stock-based compensation	7,346	3,335
Nonqualified deferred compensation	2,809	2,797
Property and equipment	0	585
Tax credit carryforwards	9,764	7,779
Capitalized research and development	45,499	26,357
Other	1,477	253
Total deferred tax assets	113,259	80,510
Less valuation allowance	(81,284)	(61,152)
Net deferred tax assets	31,975	19,358
Deferred tax liabilities:
Prepaid expenses	(2,821)	(2,411)
Property and equipment	(1,976)	0
Right-of-use assets	(6,186)	(6,011)
Intangible assets	(7,118)	(829)
Deferred commissions	(12,098)	(9,153)
Other	(364)	0
Total deferred tax liabilities	(30,563)	(18,404)
Net deferred tax assets	$ 1,412	$ 954