COMMITMENTS AND CONTINGENCIES - Narrative (Details)	3 Months Ended		6 Months Ended
	Sep. 30, 2025 USD ($)	Sep. 30, 2024 USD ($)	Sep. 30, 2025 USD ($)	Sep. 30, 2024 USD ($)	Mar. 31, 2025 USD ($)	Mar. 31, 2024 ft²	Mar. 31, 2021
Gain Contingencies [Line Items]
Lease extension							3 years
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]	Other assets		Other assets		Other assets
Operating Lease, Liability, Statement of Financial Position [Extensible Enumeration]	Other liabilities		Other liabilities		Other liabilities
Lease expense	$ 100,000	$ 100,000	$ 300,000	$ 200,000
Operating lease asset	3,600,000		3,600,000		$ 3,900,000
Operating lease liability	$ 5,000,000		$ 5,000,000		$ 5,400,000
Remaining lease term	10 years		10 years
Discount rate	7.37%		7.37%
Undiscounted excess amount not disclosed	$ 0		$ 0
Office Space
Gain Contingencies [Line Items]
Area of additional office space | ft²						7,100
Letters of Credit Issued and Outstanding
Gain Contingencies [Line Items]
Expiring letters of credit	900,000		900,000
Letters of credit drawn	0		0
Letters of Credit Issued and Outstanding | February 2026
Gain Contingencies [Line Items]
Expiring letters of credit	400,000		400,000
Letters of Credit Issued and Outstanding | March 2026
Gain Contingencies [Line Items]
Expiring letters of credit	300,000		300,000
Letters of Credit Issued and Outstanding | April 2026
Gain Contingencies [Line Items]
Expiring letters of credit	$ 200,000		$ 200,000