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Fair Value Measurements (Details 3) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2023
Mar. 31, 2022
Changes in the fair value of Level 3 assets measured on a recurring basis    
Total gains or losses (unrealized): included in earnings $ 0 $ 0
U.S. States and political subdivisions securities    
Changes in the fair value of Level 3 assets measured on a recurring basis    
Balance at the beginning of the period 1,464 1,849
Total gains or losses (realized/unrealized): included in earnings 0 0
Total gains or losses (realized/unrealized): included in other comprehensive income (loss) 32 (155)
Purchases 3,000 3,000
Issuances 0 0
Sales 0 0
Settlements 0 0
Maturities (175) (165)
Transfers into Level 3 0 0
Transfers out of Level 3 0 0
Balance at the end of the period $ 4,321 $ 4,529