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Goodwill and Other Intangible Assets (Details) - USD ($)
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Identified intangible assets      
Carrying Amount $ 60,697,000 $ 60,697,000  
Accumulated Amortization 60,697,000 60,697,000  
Amortization expense 0 0 $ 0
Changes in carrying amount of goodwill 0 0  
Core Deposits [Member]      
Identified intangible assets      
Carrying Amount 58,675,000 58,675,000  
Accumulated Amortization 58,675,000 58,675,000  
Contractual Rights [Member]      
Identified intangible assets      
Carrying Amount 2,022,000 2,022,000  
Accumulated Amortization $ 2,022,000 $ 2,022,000