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RELATED PARTY TRANSACTIONS (Details) - USD ($)
$ in Thousands
12 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2019
Jul. 26, 2016
Related Party Transaction [Line Items]        
Equity in net income of unconsolidated affiliates $ 21,073 $ 12,537 $ 5,658  
Administrative Fee Revenue        
Related Party Transaction [Line Items]        
Net administrative fee revenue 6,000 7,400 8,000  
Unconsolidated subsidiary        
Related Party Transaction [Line Items]        
Equity in net income of unconsolidated affiliates $ 21,073 $ 12,537 5,658  
Unconsolidated subsidiary | FFF        
Related Party Transaction [Line Items]        
Equity method investment ownership interest (percent) 49.00% 49.00%   49.00%
Equity in net income of unconsolidated affiliates $ 11,344 $ 12,299 $ 5,102