| Interest Income and Interest Expense Disclosure | NET INTEREST INCOME/EXPENSE Net interest income/expense for the three and nine months ended December 31, 2022, and December 31, 2021 includes: 
 
|  |  |  |  |  |  |  |  |  |  |  |  |  
|  | Three months ended December 31, 2022 |  | Three months ended December 31, 2021 |  
| Interest income: |  |  | (Restated) |  
| Interest income on securities repurchased under reverse repurchase agreements and amounts due from banks | $ | 4,062 |  |  | $ | 280 |  |  
| Interest income on trading securities | 44,760 |  |  | 20,745 |  |  
| Interest income on available-for-sale securities | 6,727 |  |  | 6,470 |  |  
| 
Interest income on margin lending (2)
 | 12,379 |  |  | 4,921 |  |  
| Interest income on loans issued | 12,327 |  |  | 1,241 |  |  
| Total interest income | $ | 80,255 |  |  | $ | 33,657 |  |  
|  |  |  |  |  
| Interest expense: |  |  |  |  
| Interest expense on securities repurchase agreement obligations | $ | 39,958 |  |  | $ | 15,671 |  |  
| Interest expense on customer liabilities | 11,149 |  |  | 5,732 |  |  
| Interest expense on debt securities issued | 842 |  |  | 394 |  |  
| Other interest expense | 88 |  |  | 93 |  |  
| Total interest expense | $ | 52,037 |  |  | $ | 21,890 |  |  
|  |  |  |  |  
| Net interest income | $ | 28,218 |  |  | $ | 11,767 |  | 
 
|  |  |  |  |  |  |  |  |  |  |  |  |  
|  | Nine months ended December 31, 2022 |  | Nine months ended December 31, 2021 |  
| Interest income: |  |  | (Restated) |  
| Interest income on securities repurchased under reverse repurchase agreements and amounts due from banks | $ | 6,198 |  |  | $ | 887 |  |  
| Interest income on trading securities | 116,922 |  |  | 54,966 |  |  
| Interest income on available-for-sale securities | 13,280 |  |  | 16,244 |  |  
| 
Interest income on margin lending (2)
 | 27,259 |  |  | 8,212 |  |  
| Interest income on loans issued | 24,158 |  |  | 2,205 |  |  
| Total interest income | $ | 187,817 |  |  | $ | 82,514 |  |  
|  |  |  |  |  
| Interest expense: |  |  |  |  
| Interest expense on securities repurchase agreement obligations | $ | 105,466 |  |  | $ | 38,548 |  |  
| Interest expense on customer accounts and deposits | 24,780 |  |  | 12,645 |  |  
| Interest expense on debt securities issued | 2,457 |  |  | 1,323 |  |  
| Interest expense on loans received | 268 |  |  | 291 |  |  
| Other interest expense | — |  |  | 45 |  |  
| Total interest expense | $ | 132,971 |  |  | $ | 52,852 |  |  
|  |  |  |  |  
| Net interest income | $ | 54,846 |  |  | $ | 29,662 |  | ____________________ (2) Amounts for the three and nine months ended December 31, 2021, are shown after reclassification of interest income from margin lending. Please see Note 4 |