| Schedule of fees and commission income/(expense) | 
 As of March 31, 2022 and 2021, fee and commission income/expense of the Company included the following: 
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 | 
 Year ended 
March 31, 2022 
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 | 
 Year ended 
March 31, 2021  
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 | 
 Year ended 
March 31, 2020 
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(restated) | 
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(restated) | 
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(restated) | 
 
| Fee and commission income: | 
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| Brokerage services | 
$ | 
319,015  | 
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$ | 
204,057  | 
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$ | 
60,130  | 
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| Bank services | 
6,727  | 
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 | 
699  | 
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 | 
—  | 
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| Underwriting services | 
5,963  | 
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 | 
6,451  | 
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 | 
1,031  | 
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| Other commission income | 
3,739  | 
 | 
 | 
4,789  | 
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 | 
31  | 
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 | 
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| Total fee and commission income | 
$ | 
335,444  | 
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$ | 
215,996  | 
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$ | 
61,192  | 
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| Fee and commission expense: | 
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| Brokerage services | 
$ | 
61,941  | 
 | 
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$ | 
62,487  | 
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$ | 
18,314  | 
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| Bank services | 
7,546  | 
 | 
 | 
1,653  | 
 | 
 | 
158  | 
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| Stock exchange services | 
1,669  | 
 | 
 | 
807  | 
 | 
 | 
466  | 
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| Central Depository services | 
329  | 
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 | 
247  | 
 | 
 | 
399  | 
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| Other commission expense | 
1,758  | 
 | 
 | 
784  | 
 | 
 | 
78  | 
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| Total fee and commission expense | 
$ | 
73,243  | 
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$ | 
65,978  | 
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$ | 
19,415  | 
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