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REGULATORY AUTHORITIES - Additional Information (Details)
Sep. 30, 2023
USD ($)
Jun. 30, 2023
USD ($)
LFNY    
Regulatory Requirements [Line Items]    
Minimum net capital requirement as defined under exchange act $ 5,000  
Aggregate indebtedness to net capital ratio 0.74  
Regulatory capital $ 73,105,000  
Regulatory capital in excess of minimum requirement 69,493,000  
U.K. Subsidiaries    
Regulatory Requirements [Line Items]    
Regulatory capital 174,572,000  
Regulatory capital in excess of minimum requirement 111,142,000  
CFLF    
Regulatory Requirements [Line Items]    
Regulatory capital   $ 154,143,000
Regulatory capital in excess of minimum requirement   68,939,000
Combined European Regulated Group    
Regulatory Requirements [Line Items]    
Regulatory capital   180,261,000
Regulatory capital in excess of minimum requirement   $ 86,449,000
Other U.S. and Non-U.S. Subsidiaries    
Regulatory Requirements [Line Items]    
Regulatory capital 141,320,000  
Regulatory capital in excess of minimum requirement $ 114,703,000