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Fair Value and Interest Rate Risk - Reconciliation of Level 3 Available-for-sale Securities (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]        
Level 3 fair value, beginning of year $ 10,968 $ 10,189 $ 11,123 $ 10,262
Unrealized gain 509 176 354 103
Level 3 fair value, end of year $ 11,477 $ 10,365 $ 11,477 $ 10,365
Fair Value, Asset, Recurring Basis, Unobservable Input Reconciliation, Asset, Gain (Loss), Statement of Other Comprehensive Income or Comprehensive Income [Extensible Enumeration] Unrealized holding gain (loss) on securities Unrealized holding gain (loss) on securities Unrealized holding gain (loss) on securities Unrealized holding gain (loss) on securities