INSURANCE CONTRACTS ASSETS AND LIABILITIES FROM INSURANCE ACTIVITIES - Schedule of long-duration insurance, by product segment (Details) - USD ($) $ in Thousands	Jun. 30, 2026	Mar. 31, 2026	Mar. 31, 2025
Liabilities for Guarantees on Long-Duration Contracts [Line Items]
Discounted PVENP	$ 5,491	$ 4,985	$ 4,787
Life Insurance
Liabilities for Guarantees on Long-Duration Contracts [Line Items]
Undiscounted PVEFPB	43,430	40,626
Undiscounted PVENP	11,060	8,083
Discounted PVEFPB	19,939	18,776
Discounted PVENP	$ 5,491	$ 4,985
Weighted-average duration of the liability (years)	3 years 9 months 18 days	5 years 6 months
Weighted-average interest accretion (original locked-in) rate in KZT	13.00%	12.00%
Weighted-average current discount rate at balance sheet date in KZT	16.00%	14.00%
Annuity Contracts
Liabilities for Guarantees on Long-Duration Contracts [Line Items]
Undiscounted PVEFPB	$ 1,001,611	$ 726,403
Undiscounted PVENP	0	0
Discounted PVEFPB	384,104	314,350
Discounted PVENP	$ 0	$ 0
Weighted-average duration of the liability (years)	3 years 6 months	3 years 1 month 6 days
Weighted-average interest accretion (original locked-in) rate in KZT	15.00%	14.00%
Weighted-average current discount rate at balance sheet date in KZT	16.00%	15.00%

Current weighted-average discount rate used to measure present value of total expected payment to policyholder in excess of present value of total expected assessment. Excludes benefit classified as market risk benefit or under provisions of Topic 815 on derivative and hedging.

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Weighted-average duration of present value of total expected payment to policyholder in excess of present value of total expected assessment, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Excludes benefit classified as market risk benefit or under provision of Topic 815 on derivative and hedging.

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Original weighted-average discount rate at contract issue date used to measure present value of total expected payment to policyholder in excess of present value of total expected assessment. Excludes benefit classified as market risk benefit or under provisions of Topic 815 on derivative and hedging.

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Amount, before effect of reinsurance, of discounted balance for expected future gross premium component of liability for future policy benefit.

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Amount, before effect of reinsurance, of undiscounted balance for expected future policy benefit and expense component of liability for future policy benefit.

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