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Securities - Unrealized Loss Positions (Details)
Dec. 31, 2021
USD ($)
security
Dec. 31, 2020
USD ($)
Securities Available-for-Sale, Number of Securities    
Less than 12 months in an unrealized loss position 241 7
Greater than 12 months in an unrealized loss position 11 13
Total 252 20
Securities Available-for-Sale, Unrealized Losses    
Less than 12 months in an unrealized loss position $ 4,230,000 $ 313,000
Greater than 12 months in an unrealized loss position 885,000 2,205,000
Total 5,115,000 2,518,000
Securities Available-for-Sale, Fair Value    
Less than 12 months in an unrealized loss position 734,235,000 16,002,000
Greater than 12 months in an unrealized loss position 24,626,000 81,285,000
Total $ 758,861,000 $ 97,287,000
US Treasury Securities    
Securities Available-for-Sale, Number of Securities    
Less than 12 months in an unrealized loss position | security 1  
Total | security 1  
Securities Available-for-Sale, Unrealized Losses    
Less than 12 months in an unrealized loss position $ 37,000  
Total 37,000  
Securities Available-for-Sale, Fair Value    
Less than 12 months in an unrealized loss position 49,719,000  
Total $ 49,719,000  
US Government Corporations and Agencies Securities    
Securities Available-for-Sale, Number of Securities    
Less than 12 months in an unrealized loss position | security 5  
Greater than 12 months in an unrealized loss position 4 4
Total 9 4
Securities Available-for-Sale, Unrealized Losses    
Less than 12 months in an unrealized loss position $ 592,000  
Greater than 12 months in an unrealized loss position 107,000 $ 154,000
Total 699,000 154,000
Securities Available-for-Sale, Fair Value    
Less than 12 months in an unrealized loss position 56,879,000  
Greater than 12 months in an unrealized loss position 5,008,000 6,657,000
Total $ 61,887,000 $ 6,657,000
Mortgage Backed Securities, Issued by US Government Agencies    
Securities Available-for-Sale, Number of Securities    
Less than 12 months in an unrealized loss position 63 1
Greater than 12 months in an unrealized loss position | security 1  
Total 64 1
Securities Available-for-Sale, Unrealized Losses    
Less than 12 months in an unrealized loss position $ 505,000 $ 1,000
Greater than 12 months in an unrealized loss position 65,000  
Total 570,000 1,000
Securities Available-for-Sale, Fair Value    
Less than 12 months in an unrealized loss position 78,711,000 141,000
Greater than 12 months in an unrealized loss position 1,663,000  
Total $ 80,374,000 $ 141,000
States and political subdivisions    
Securities Available-for-Sale, Number of Securities    
Less than 12 months in an unrealized loss position | security 7  
Greater than 12 months in an unrealized loss position 1 1
Total 8 1
Securities Available-for-Sale, Unrealized Losses    
Less than 12 months in an unrealized loss position $ 55,000  
Greater than 12 months in an unrealized loss position 617,000 $ 1,362,000
Total 672,000 1,362,000
Securities Available-for-Sale, Fair Value    
Less than 12 months in an unrealized loss position 8,430,000  
Greater than 12 months in an unrealized loss position 4,051,000 3,433,000
Total $ 12,481,000 $ 3,433,000
Corporate bonds    
Securities Available-for-Sale, Number of Securities    
Less than 12 months in an unrealized loss position | security 2  
Total | security 2  
Securities Available-for-Sale, Unrealized Losses    
Less than 12 months in an unrealized loss position $ 113,000  
Total 113,000  
Securities Available-for-Sale, Fair Value    
Less than 12 months in an unrealized loss position 9,887,000  
Total $ 9,887,000  
Collateralized loan obligations    
Securities Available-for-Sale, Number of Securities    
Less than 12 months in an unrealized loss position 133 4
Greater than 12 months in an unrealized loss position   1
Total 133 5
Securities Available-for-Sale, Unrealized Losses    
Less than 12 months in an unrealized loss position $ 2,285,000 $ 279,000
Greater than 12 months in an unrealized loss position   1,000
Total 2,285,000 280,000
Securities Available-for-Sale, Fair Value    
Less than 12 months in an unrealized loss position 381,658,000 8,142,000
Greater than 12 months in an unrealized loss position   146,000
Total $ 381,658,000 $ 8,288,000
Asset-backed Securities    
Securities Available-for-Sale, Number of Securities    
Less than 12 months in an unrealized loss position 20 1
Greater than 12 months in an unrealized loss position 3 3
Total 23 4
Securities Available-for-Sale, Unrealized Losses    
Less than 12 months in an unrealized loss position $ 608,000 $ 2,000
Greater than 12 months in an unrealized loss position 53,000 509,000
Total 661,000 511,000
Securities Available-for-Sale, Fair Value    
Less than 12 months in an unrealized loss position 103,819,000 251,000
Greater than 12 months in an unrealized loss position 3,276,000 49,572,000
Total $ 107,095,000 $ 49,823,000
Collateralized loan obligations.    
Securities Available-for-Sale, Number of Securities    
Less than 12 months in an unrealized loss position 10 1
Greater than 12 months in an unrealized loss position 2 4
Total 12 5
Securities Available-for-Sale, Unrealized Losses    
Less than 12 months in an unrealized loss position $ 35,000 $ 31,000
Greater than 12 months in an unrealized loss position 43,000 179,000
Total 78,000 210,000
Securities Available-for-Sale, Fair Value    
Less than 12 months in an unrealized loss position 45,132,000 7,468,000
Greater than 12 months in an unrealized loss position 10,628,000 21,477,000
Total $ 55,760,000 $ 28,945,000