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)

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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, 2023
Mar. 31, 2023
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Assets measured at amortized cost $ 204,648 $ 243,014
Recognized impairment loss in Income Statement (342) (402)
Unrealized loss accumulated in other comprehensive income/(loss) (1,809) (3,559)
Assets measured at fair value 202,497 239,053
Corporate debt    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Assets measured at amortized cost 127,073 192,167
Recognized impairment loss in Income Statement (61) (402)
Unrealized loss accumulated in other comprehensive income/(loss) 390 (683)
Assets measured at fair value 127,402 191,082
Non-US sovereign debt    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Assets measured at amortized cost 64,799 42,456
Recognized impairment loss in Income Statement (281) 0
Unrealized loss accumulated in other comprehensive income/(loss) (1,531) (2,294)
Assets measured at fair value 62,987 40,162
U.S. sovereign debt    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Assets measured at amortized cost 12,776 8,391
Recognized impairment loss in Income Statement 0 0
Unrealized loss accumulated in other comprehensive income/(loss) (668) (582)
Assets measured at fair value $ 12,108 $ 7,809