SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details)		3 Months Ended		12 Months Ended
	Jul. 18, 2021	Jun. 30, 2025 USD ($) segment investment	Jun. 30, 2024 USD ($)	Mar. 31, 2025 USD ($) investment
Accounting Policies [Abstract]
Cash held in money market funds		$ 33,700,000		$ 28,100,000
FDIC uninsured amount		$ 46,800,000		$ 43,100,000
Number of operating segments | segment		1
Number of reportable segments | segment		1
Remaining lease term		10 years 3 months 18 days
Concentration Risk [Line Items]
Number of PIK investments | investment		4		5
Non-cash PIK interest income percent		5.80%	5.90%
Interest or penalties expense		$ 0	$ 0
Restricted Stock | 2010 Plan
Concentration Risk [Line Items]
Right to grant period	10 years
Investments on Non-accrual Status | Percentage of Total Portfolio at Fair Value | Credit risk
Concentration Risk [Line Items]
Percent of total investment portfolio's fair value		0.80%		1.70%
Investments on Non-accrual Status | Percentage of Total Portfolio at Cost | Credit risk
Concentration Risk [Line Items]
Percent of total investment portfolio's fair value		2.60%		3.50%