v3.25.1
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Narrative (Details)
$ in Thousands
12 Months Ended
Mar. 31, 2025
USD ($)
segment
Mar. 31, 2024
USD ($)
Mar. 31, 2023
USD ($)
Oct. 17, 2024
USD ($)
Sep. 17, 2024
USD ($)
Property, Plant and Equipment [Line Items]          
Fee and commission income $ 505,026 $ 440,333 $ 327,215    
Percentage of default probability on defaulted loans 100.00%        
Allowance for credit loss accrual percent 100.00%        
Impairment $ 0 0      
Goodwill $ 49,093 52,648 14,192    
Number of reportable segments | segment 4        
Single non-related party          
Property, Plant and Equipment [Line Items]          
Fee and commission income $ 284,728 196,663 42,526    
Interest income from margin loans $ 32,808 $ 99,594 $ 5,904    
Minimum          
Property, Plant and Equipment [Line Items]          
Useful lives of assets 3 years        
Maximum          
Property, Plant and Equipment [Line Items]          
Useful lives of assets 65 years        
Consideration paid for SilknetCom          
Property, Plant and Equipment [Line Items]          
Goodwill         $ 208
Business acquisition, percentage of voting interests acquired (in percentage)         100.00%
EliteCom LLP          
Property, Plant and Equipment [Line Items]          
Goodwill       $ 727  
Business acquisition, percentage of voting interests acquired (in percentage)       100.00%