Quarterly report pursuant to Section 13 or 15(d)

FEE AND COMMISSION INCOME/EXPENSE-Schedule of commission income (Details)

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FEE AND COMMISSION INCOME/EXPENSE-Schedule of commission income (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Sep. 30, 2023
Sep. 30, 2022
Sep. 30, 2023
Sep. 30, 2022
Disaggregation of Revenue [Line Items]        
Brokerage services $ 84,713 $ 75,343 $ 139,795 $ 158,943
Commission income from payment processing 10,299   28,341  
Bank services 9,308 5,779 22,149 9,592
Underwriting and market-making services 2,910 1,587 11,741 3,230
Other fee and commission income 4,473 448 8,380 838
Total fee and commission income 111,703 83,157 210,406 172,603
Central Asia and Eastern Europe        
Disaggregation of Revenue [Line Items]        
Brokerage services 58,603 11,512 93,621 15,115
Commission income from payment processing 10,299   28,341  
Bank services 9,308 5,779 22,149 9,592
Underwriting and market-making services 1,771 1,587 6,469 3,230
Other fee and commission income 4,246 189 7,032 322
Total fee and commission income 84,227 19,067 157,612 28,259
Europe, excluding Eastern Europe        
Disaggregation of Revenue [Line Items]        
Brokerage services 24,038 62,781 42,989 141,644
Commission income from payment processing 0   0  
Bank services 0 0 0 0
Underwriting and market-making services 0 0 0 0
Other fee and commission income 209 259 424 516
Total fee and commission income 24,247 63,040 43,413 142,160
The United States        
Disaggregation of Revenue [Line Items]        
Brokerage services 959 1,050 2,072 2,184
Commission income from payment processing 0   0  
Bank services 0 0 0 0
Underwriting and market-making services 1,139 0 5,272 0
Other fee and commission income 18 0 924 0
Total fee and commission income 2,116 1,050 8,268 2,184
Middle East/Caucasus        
Disaggregation of Revenue [Line Items]        
Brokerage services 1,113 0 1,113 0
Commission income from payment processing 0   0  
Bank services 0 0 0 0
Underwriting and market-making services 0 0 0 0
Other fee and commission income 0 0 0 0
Total fee and commission income $ 1,113 $ 0 $ 1,113 $ 0