SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details)		3 Months Ended		6 Months Ended		12 Months Ended
	Jul. 18, 2021	Sep. 30, 2025 USD ($)	Sep. 30, 2024	Sep. 30, 2025 USD ($) segment investment	Sep. 30, 2024 USD ($)	Mar. 31, 2025 USD ($) investment
Accounting Policies [Abstract]
Cash held in money market funds		$ 76,600,000		$ 76,600,000		$ 28,100,000
FDIC uninsured amount		$ 87,100,000		$ 87,100,000		$ 43,100,000
Number of operating segments | segment				1
Number of reportable segments | segment				1
Remaining lease term		10 years		10 years
Concentration Risk [Line Items]
Number of PIK investments | investment				4		5
Non-cash PIK interest income percent		4.90%	4.90%	5.40%	5.50%
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				1.00%		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%