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SHARE-BASED COMPENSATION - Narrative (Details) - USD ($) $ / shares in Units, $ in Millions	1 Months Ended		3 Months Ended		111 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Mar. 31, 2025	Mar. 31, 2024	Mar. 31, 2025
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares available for issuance (in shares)			2,258,071		2,258,071
Unrecognized option employee stock-based compensation costs			$ 113.8		$ 113.8
Former Executive Officers
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Accelerated vesting costs			$ 1.6	$ 3.5
Restricted Stock Units Outstanding
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period			4 years
Remaining weighted-average period for stock options and RSUs			3 years 6 months 25 days
Unrecognized employee stock-based compensation costs related to unvested RSUs			$ 15.6		$ 15.6
Options to Purchase Common Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period			48 months
Expiration period (in years)			10 years
Weighted average fair value per option (in dollars per share)			$ 10.53	$ 14.43
Remaining weighted-average period for stock options and RSUs			3 years 2 months 4 days
Options to Purchase Common Stock \| Initial Vesting Period
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting (in percent)			25.00%
Options to Purchase Common Stock \| Subsequent Vesting Period
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period			36 months
Vesting (in percent)			75.00%
Employee Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Purchase price of common stock, fair market value (in percent)			85.00%
Shares available for issuance (in shares)			51,915		51,915
Issuance of common stock for cash under employee stock purchase plan (in shares)					143,532
2016 Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Additional shares authorized for plan (in shares)	2,000,000	2,000,000
Shares available for issuance (in shares)			2,258,071		2,258,071