Quarterly report pursuant to Section 13 or 15(d)

TRADING AND AVAILABLE FOR SALE SECURITIES AT FAIR VALUE - Schedule of amortized cost, unrealized gains and losses accumulated in other comprehensive income, and fair value of available-for-sale securities (Details)

v3.25.0.1
TRADING AND AVAILABLE FOR SALE SECURITIES AT FAIR VALUE - Schedule of amortized cost, unrealized gains and losses accumulated in other comprehensive income, and fair value of available-for-sale securities (Details) - USD ($)
$ in Thousands
Dec. 31, 2024
Mar. 31, 2024
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Assets measured at amortized cost $ 417,025 $ 218,577
Accumulated impairment loss (456) (413)
Unrealized gain accumulated in other comprehensive (loss)/income 2,045 (1,543)
Assets measured at fair value 418,614 216,621
Non-US sovereign debt    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Assets measured at amortized cost 214,637 29,121
Accumulated impairment loss (401) (352)
Unrealized gain accumulated in other comprehensive (loss)/income 2,866 (1,753)
Assets measured at fair value 217,102 27,016
Corporate debt    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Assets measured at amortized cost 180,438 172,689
Accumulated impairment loss (55) (61)
Unrealized gain accumulated in other comprehensive (loss)/income (111) 940
Assets measured at fair value 180,272 173,568
U.S. sovereign debt    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Assets measured at amortized cost 21,950 16,767
Accumulated impairment loss 0 0
Unrealized gain accumulated in other comprehensive (loss)/income (710) (730)
Assets measured at fair value $ 21,240 $ 16,037