Quarterly report pursuant to Section 13 or 15(d)

TRADING AND AVAILABLE FOR SALE SECURITIES AT FAIR VALUE - Schedule of maturity of trading and available-for-sale securities (Details)

v3.23.3
TRADING AND AVAILABLE FOR SALE SECURITIES AT FAIR VALUE - Schedule of maturity of trading and available-for-sale securities (Details) - USD ($)
$ in Thousands
Sep. 30, 2023
Mar. 31, 2023
Debt Securities, Available-for-sale [Line Items]    
Fair value of equity securities $ 192,546 $ 239,053
Corporate debt    
Debt Securities, Available-for-sale [Line Items]    
Fair value of equity securities 133,093 191,082
Non-US sovereign debt    
Debt Securities, Available-for-sale [Line Items]    
Fair value of equity securities 47,363 40,162
US sovereign debt    
Debt Securities, Available-for-sale [Line Items]    
Fair value of equity securities 12,090 7,809
Up to 1 year    
Debt Securities, Available-for-sale [Line Items]    
Fair value of equity securities 10,569 78,953
Up to 1 year | Corporate debt    
Debt Securities, Available-for-sale [Line Items]    
Fair value of equity securities 8,579 77,006
Up to 1 year | Non-US sovereign debt    
Debt Securities, Available-for-sale [Line Items]    
Fair value of equity securities 0 0
Up to 1 year | US sovereign debt    
Debt Securities, Available-for-sale [Line Items]    
Fair value of equity securities 1,990 1,947
1-5 years    
Debt Securities, Available-for-sale [Line Items]    
Fair value of equity securities 116,210 118,527
1-5 years | Corporate debt    
Debt Securities, Available-for-sale [Line Items]    
Fair value of equity securities 72,941 82,579
1-5 years | Non-US sovereign debt    
Debt Securities, Available-for-sale [Line Items]    
Fair value of equity securities 35,935 33,143
1-5 years | US sovereign debt    
Debt Securities, Available-for-sale [Line Items]    
Fair value of equity securities 7,334 2,805
5-10 years    
Debt Securities, Available-for-sale [Line Items]    
Fair value of equity securities 58,503 34,031
5-10 years | Corporate debt    
Debt Securities, Available-for-sale [Line Items]    
Fair value of equity securities 51,563 31,486
5-10 years | Non-US sovereign debt    
Debt Securities, Available-for-sale [Line Items]    
Fair value of equity securities 5,316 820
5-10 years | US sovereign debt    
Debt Securities, Available-for-sale [Line Items]    
Fair value of equity securities 1,624 1,725
More than 10 years    
Debt Securities, Available-for-sale [Line Items]    
Fair value of equity securities 7,264 7,542
More than 10 years | Corporate debt    
Debt Securities, Available-for-sale [Line Items]    
Fair value of equity securities 10 11
More than 10 years | Non-US sovereign debt    
Debt Securities, Available-for-sale [Line Items]    
Fair value of equity securities 6,112 6,199
More than 10 years | US sovereign debt    
Debt Securities, Available-for-sale [Line Items]    
Fair value of equity securities $ 1,142 $ 1,332