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)

v3.24.3
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, 2024
Mar. 31, 2024
Debt Securities, Available-for-sale [Line Items]    
Fair value of equity securities $ 284,580 $ 216,621
Corporate debt    
Debt Securities, Available-for-sale [Line Items]    
Fair value of equity securities 184,556 173,568
Non-US sovereign debt    
Debt Securities, Available-for-sale [Line Items]    
Fair value of equity securities 78,446 27,016
U.S. sovereign debt    
Debt Securities, Available-for-sale [Line Items]    
Fair value of equity securities 21,578 16,037
Up to 1 year    
Debt Securities, Available-for-sale [Line Items]    
Fair value of equity securities 47,159 73,254
Up to 1 year | Corporate debt    
Debt Securities, Available-for-sale [Line Items]    
Fair value of equity securities 29,395 65,415
Up to 1 year | Non-US sovereign debt    
Debt Securities, Available-for-sale [Line Items]    
Fair value of equity securities 17,764 7,839
Up to 1 year | U.S. sovereign debt    
Debt Securities, Available-for-sale [Line Items]    
Fair value of equity securities 0 0
1-5 years    
Debt Securities, Available-for-sale [Line Items]    
Fair value of equity securities 128,087 56,743
1-5 years | Corporate debt    
Debt Securities, Available-for-sale [Line Items]    
Fair value of equity securities 98,466 44,374
1-5 years | Non-US sovereign debt    
Debt Securities, Available-for-sale [Line Items]    
Fair value of equity securities 17,675 7,310
1-5 years | U.S. sovereign debt    
Debt Securities, Available-for-sale [Line Items]    
Fair value of equity securities 11,946 5,059
5-10 years    
Debt Securities, Available-for-sale [Line Items]    
Fair value of equity securities 96,881 75,103
5-10 years | Corporate debt    
Debt Securities, Available-for-sale [Line Items]    
Fair value of equity securities 52,424 59,553
5-10 years | Non-US sovereign debt    
Debt Securities, Available-for-sale [Line Items]    
Fair value of equity securities 36,100 5,797
5-10 years | U.S. sovereign debt    
Debt Securities, Available-for-sale [Line Items]    
Fair value of equity securities 8,357 9,753
More than 10 years    
Debt Securities, Available-for-sale [Line Items]    
Fair value of equity securities 12,453 11,521
More than 10 years | Corporate debt    
Debt Securities, Available-for-sale [Line Items]    
Fair value of equity securities 4,271 4,226
More than 10 years | Non-US sovereign debt    
Debt Securities, Available-for-sale [Line Items]    
Fair value of equity securities 6,907 6,070
More than 10 years | U.S. sovereign debt    
Debt Securities, Available-for-sale [Line Items]    
Fair value of equity securities $ 1,275 $ 1,225