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BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES, Restricted Cash (Details) - USD ($)
3 Months Ended
Sep. 30, 2021
Jun. 30, 2021
Sep. 30, 2020
Jun. 30, 2020
Cash, Cash Equivalents and Restricted Cash [Abstract]        
Cash and cash equivalents $ 14,116,632 $ 21,302,317    
Restricted cash 5,050,000 144,634    
Total cash, cash equivalents, and restricted cash 19,166,632 $ 21,446,951 $ 13,861,709 $ 14,617,234
JPMorgan Chase Credit Facility [Member]        
Restricted Cash [Abstract]        
Borrowing capacity 5,000,000.00      
Cash deposit 5,050,000.00      
White Oak Credit Facility [Member]        
Restricted Cash [Abstract]        
Borrowing capacity $ 5,000,000.00      
White Oak Credit Facility [Member] | Maximum [Member]        
Restricted Cash [Abstract]        
Restriction period on access and usage of certain cash deposit balances 2 days