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Securities, Available for Sale (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Debt securities, available-for-sale [Abstract]      
Amortized cost $ 1,743,882 $ 1,694,806  
Unrealized gains 38 14,497  
Unrealized losses (216,695) (21,942)  
Estimated fair value 1,527,225 1,687,361  
Allowance for credit losses on AFS securities 0 0  
Components of net realized gains (losses) on sale of AFS securities [Abstract]      
Gross realized gains 0 0 $ 3
Gross realized (losses) 0 0 0
Net AFS realized gains (losses) 0 0 3
Gains from calls on securities available for sale     $ 3
U.S. Treasury [Member]      
Debt securities, available-for-sale [Abstract]      
Amortized cost 132,891 73,016  
Unrealized gains 0 59  
Unrealized losses (11,233) (6)  
Estimated fair value 121,658 73,069  
Federal Agency [Member]      
Debt securities, available-for-sale [Abstract]      
Amortized cost 248,419 248,454  
Unrealized gains 0 0  
Unrealized losses (42,000) (8,523)  
Estimated fair value 206,419 239,931  
State & Municipal [Member]      
Debt securities, available-for-sale [Abstract]      
Amortized cost 97,036 95,531  
Unrealized gains 5 116  
Unrealized losses (14,190) (1,559)  
Estimated fair value 82,851 94,088  
Mortgage-Backed, Government Sponsored Enterprises [Member]      
Debt securities, available-for-sale [Abstract]      
Amortized cost 454,177 538,036  
Unrealized gains 9 8,036  
Unrealized losses (54,675) (5,589)  
Estimated fair value 399,511 540,483  
Mortgage-backed Securities, U.S. Government Agency Securities [Member]      
Debt securities, available-for-sale [Abstract]      
Amortized cost 81,844 65,339  
Unrealized gains 15 1,108  
Unrealized losses (7,676) (255)  
Estimated fair value 74,183 66,192  
Collateralized Mortgage Obligations, Government-Sponsored Enterprises [Member]      
Debt securities, available-for-sale [Abstract]      
Amortized cost 498,021 484,550  
Unrealized gains 9 2,723  
Unrealized losses (59,473) (5,113)  
Estimated fair value 438,557 482,160  
Collateralized Mortgage Obligations, U.S. Government Agency Securities [Member]      
Debt securities, available-for-sale [Abstract]      
Amortized cost 171,090 139,380  
Unrealized gains 0 939  
Unrealized losses (21,284) (884)  
Estimated fair value 149,806 139,435  
Corporate [Member]      
Debt securities, available-for-sale [Abstract]      
Amortized cost 60,404 50,500  
Unrealized gains 0 1,516  
Unrealized losses (6,164) (13)  
Estimated fair value $ 54,240 $ 52,003