Annual report [Section 13 and 15(d), not S-K Item 405]

INSURANCE CONTRACTS ASSETS AND LIABILITIES FROM INSURANCE ACTIVITIES - Schedule of allocation by insurance products (Details)

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INSURANCE CONTRACTS ASSETS AND LIABILITIES FROM INSURANCE ACTIVITIES - Schedule of allocation by insurance products (Details) - USD ($)
$ in Thousands
Mar. 31, 2026
Mar. 31, 2025
Mar. 31, 2024
Liability for Claims and Claims Adjustment Expense [Line Items]      
Reserves for claims and claims' adjustment expenses $ 58,463 $ 84,023 $ 55,678
Liability for Unpaid Claims and Claims Adjustment Expense, Net 53,520 80,603 $ 51,647
Short-Term Contract with Customer      
Liability for Claims and Claims Adjustment Expense [Line Items]      
Reserves for claims and claims' adjustment expenses 58,463 $ 84,023  
Liability for Unpaid Claims and Claims Adjustment Expense, Net 53,520    
Life Insurance | Short-Term Contract with Customer      
Liability for Claims and Claims Adjustment Expense [Line Items]      
Reserves for claims and claims' adjustment expenses 4,631    
Reserves for claims and claims’ adjustment expenses, reinsurers’ share 22    
Liability for Unpaid Claims and Claims Adjustment Expense, Net 4,609    
Accident Insurance | Short-Term Contract with Customer      
Liability for Claims and Claims Adjustment Expense [Line Items]      
Reserves for claims and claims' adjustment expenses 438    
Reserves for claims and claims’ adjustment expenses, reinsurers’ share 0    
Liability for Unpaid Claims and Claims Adjustment Expense, Net 438    
Civil Liability | Short-Term Contract with Customer      
Liability for Claims and Claims Adjustment Expense [Line Items]      
Reserves for claims and claims' adjustment expenses 8,367    
Reserves for claims and claims’ adjustment expenses, reinsurers’ share 339    
Liability for Unpaid Claims and Claims Adjustment Expense, Net 8,028    
Vehicle Owners | Short-Term Contract with Customer      
Liability for Claims and Claims Adjustment Expense [Line Items]      
Reserves for claims and claims' adjustment expenses 14,030    
Reserves for claims and claims’ adjustment expenses, reinsurers’ share 0    
Liability for Unpaid Claims and Claims Adjustment Expense, Net 14,030    
Compulsory employer liability insurance | Short-Term Contract with Customer      
Liability for Claims and Claims Adjustment Expense [Line Items]      
Reserves for claims and claims' adjustment expenses 8,189    
Reserves for claims and claims’ adjustment expenses, reinsurers’ share 491    
Liability for Unpaid Claims and Claims Adjustment Expense, Net 7,698    
Property Damage | Short-Term Contract with Customer      
Liability for Claims and Claims Adjustment Expense [Line Items]      
Reserves for claims and claims' adjustment expenses 4,987    
Reserves for claims and claims’ adjustment expenses, reinsurers’ share 454    
Liability for Unpaid Claims and Claims Adjustment Expense, Net 4,533    
Motor Vehicle | Short-Term Contract with Customer      
Liability for Claims and Claims Adjustment Expense [Line Items]      
Reserves for claims and claims' adjustment expenses 2,431    
Reserves for claims and claims’ adjustment expenses, reinsurers’ share 22    
Liability for Unpaid Claims and Claims Adjustment Expense, Net 2,409    
Other | Short-Term Contract with Customer      
Liability for Claims and Claims Adjustment Expense [Line Items]      
Liability for Unpaid Claims and Claims Adjustment Expense, Net $ 11,775