v3.25.1
INVESTMENT SECURITIES - 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
Mar. 31, 2025
Mar. 31, 2024
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Assets measured at amortized cost $ 477,156 $ 218,577
Recognized impairment loss in Income Statement (406) (413)
Unrealized gain/(loss) accumulated in other comprehensive income/(loss) including foreign currency translation adjustments, net (3,163) (1,543)
Total available-for-sale securities, at fair value 473,587 216,621
Non-US sovereign debt    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Assets measured at amortized cost 211,628 29,121
Recognized impairment loss in Income Statement (378) (352)
Unrealized gain/(loss) accumulated in other comprehensive income/(loss) including foreign currency translation adjustments, net (3,019) (1,753)
Total available-for-sale securities, at fair value 208,231 27,016
Corporate debt    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Assets measured at amortized cost 243,660 172,689
Recognized impairment loss in Income Statement (28) (61)
Unrealized gain/(loss) accumulated in other comprehensive income/(loss) including foreign currency translation adjustments, net 98 940
Total available-for-sale securities, at fair value 243,730 173,568
U.S. sovereign debt    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Assets measured at amortized cost 21,868 16,767
Recognized impairment loss in Income Statement 0 0
Unrealized gain/(loss) accumulated in other comprehensive income/(loss) including foreign currency translation adjustments, net (242) (730)
Total available-for-sale securities, at fair value $ 21,626 $ 16,037