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Restricted Available-for-Sale Investments - Additional Information (Details) - USD ($)
3 Months Ended 12 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Dec. 31, 2025
Schedule Of Available For Sale Securities [Line Items]      
Accrued interest receivable $ 38,000   $ 13,000
Debt securities available for sale accrued interest after allowance for credit loss statement of financial position extensible list not disclosed flag true   true
Restricted Investments      
Schedule Of Available For Sale Securities [Line Items]      
Gross realized gains or losses $ 0 $ 0