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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details)
12 Months Ended
Jul. 18, 2021
Mar. 31, 2024
USD ($)
investment
Mar. 31, 2023
USD ($)
investment
Mar. 31, 2022
USD ($)
Accounting Policies [Abstract]        
FDIC Insured amount   $ 18,800,000 $ 8,900,000  
FDIC uninsured amount   $ 30,700,000 $ 20,300,000  
Remaining lease term   11 years 6 months    
Concentration Risk [Line Items]        
Non-cash interest income percent   2.90% 3.20%  
Number of PIK investments | investment   5 3  
Non-cash PIK interest income percent   5.70% 4.60%  
Interest or penalties expense   $ 0 $ 0 $ 0
Restricted Stock | 2010 Plan        
Concentration Risk [Line Items]        
Right to grant period 10 years      
Percentage of Total Portfolio at Fair Value | Credit risk | Investments on non-accrual status        
Concentration Risk [Line Items]        
Percent of total investment portfolio's fair value   2.30% 0.30%  
Percentage of Total Portfolio at Cost | Credit risk | Investments on non-accrual status        
Concentration Risk [Line Items]        
Percent of total investment portfolio's fair value   3.90% 1.30%