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Reinsurance And Policy Benefits And Losses Claims And Loss Expenses Payable (Cumulative Paid Claims And Allocated Claim Adjustment Expense Net Of Reinsurance) (Details) - USD ($)
$ in Thousands
Mar. 31, 2025
Mar. 31, 2024
Mar. 31, 2023
Mar. 31, 2022
Mar. 31, 2021
Mar. 31, 2020
Mar. 31, 2019
Incurred claims development [Abstract]              
Shortduration Insurance Contracts Cumulative Paid Claims And Allocated Claim Adjustment Expense Net $ 121,503            
All outstanding liabilities before 2019, net of reinsurance 52,077            
Liabilities for claims and claim adjustment expenses, net of reinsurance 93,236            
Accident Year 2018 [Member]              
Incurred claims development [Abstract]              
Shortduration Insurance Contracts Cumulative Paid Claims And Allocated Claim Adjustment Expense Net 16,885 $ 16,851 $ 16,809 $ 16,766 $ 15,150 $ 12,689 $ 8,838
Accident Year 2019 [Member]              
Incurred claims development [Abstract]              
Shortduration Insurance Contracts Cumulative Paid Claims And Allocated Claim Adjustment Expense Net 25,239 25,122 21,598 19,215 14,737 $ 7,366  
Accident Year 2020 [Member]              
Incurred claims development [Abstract]              
Shortduration Insurance Contracts Cumulative Paid Claims And Allocated Claim Adjustment Expense Net 14,005 13,510 12,521 11,114 $ 7,665    
Accident Year 2021 [Member]              
Incurred claims development [Abstract]              
Shortduration Insurance Contracts Cumulative Paid Claims And Allocated Claim Adjustment Expense Net 18,550 16,829 14,831 $ 11,040      
Accident Year 2022 [Member]              
Incurred claims development [Abstract]              
Shortduration Insurance Contracts Cumulative Paid Claims And Allocated Claim Adjustment Expense Net 22,266 18,444 $ 10,572        
Accident Year 2023 [Member]              
Incurred claims development [Abstract]              
Shortduration Insurance Contracts Cumulative Paid Claims And Allocated Claim Adjustment Expense Net 14,336 $ 9,414          
Accident Year 2024 [Member]              
Incurred claims development [Abstract]              
Shortduration Insurance Contracts Cumulative Paid Claims And Allocated Claim Adjustment Expense Net $ 10,222