INSURANCE CONTRACTS ASSETS AND LIABILITIES FROM INSURANCE ACTIVITIES -Schedule of insurance and reinsurance payables (Details) - USD ($) $ in Thousands	Jun. 30, 2026	Mar. 31, 2026	Mar. 31, 2025
Insurance and Reinsurance Payable [Line Items]
Insurance and reinsurance payables:	$ 14,345	$ 7,640
Unearned premium reserve	109,450	95,573
Reserves for claims and claims' adjustment expenses - short-duration	56,049	58,463	$ 84,023
Liability for future policy benefits	398,552	328,288
Deferred profit liability	189,699	163,943
Insurance contract liabilities	768,095	653,907
Reserves for claims and claims' adjustment expenses, reinsurers' share - short-duration
Insurance and Reinsurance Payable [Line Items]
Reserves for claims and claims' adjustment expenses - short-duration	56,049	58,463
Amounts payable to insured
Insurance and Reinsurance Payable [Line Items]
Insurance and reinsurance payables:	5,772	5,058
Amounts payable to reinsurers
Insurance and Reinsurance Payable [Line Items]
Insurance and reinsurance payables:	8,144	2,248
Amounts payable to agents and brokers
Insurance and Reinsurance Payable [Line Items]
Insurance and reinsurance payables:	$ 429	$ 334