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FAIR VALUE DISCLOSURES, Assets (Liabilities) Measured at Fair Value on Recurring and Non-Recurring Basis (Details) - USD ($)
$ in Thousands
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Securities available for sale [Abstract]        
Securities available for sale $ 724,504 $ 803,087    
Mortgage servicing rights 19,700 9,049 $ 2,054 $ 1,270
U.S. Government and Agencies [Member]        
Securities available for sale [Abstract]        
Securities available for sale 0 4,753    
State and Municipal [Member]        
Securities available for sale [Abstract]        
Securities available for sale 275,672 272,607    
Mortgage-Backed Securities [Member]        
Securities available for sale [Abstract]        
Securities available for sale 303,089 373,362    
Collateralized Mortgage Obligations [Member]        
Securities available for sale [Abstract]        
Securities available for sale 106,320 106,715    
Other Securities [Member]        
Securities available for sale [Abstract]        
Securities available for sale 12,487 12,078    
Recurring [Member]        
Securities available for sale [Abstract]        
Asset-backed and other amortizing securities 26,936 33,572    
Loans held for sale (mandatory) 47,593 80,174    
Mortgage servicing rights 19,700 9,049    
Asset derivatives 7,328 6,734    
Liability derivatives (535) (4,357)    
Recurring [Member] | U.S. Government and Agencies [Member]        
Securities available for sale [Abstract]        
Securities available for sale 0 4,753    
Recurring [Member] | State and Municipal [Member]        
Securities available for sale [Abstract]        
Securities available for sale 275,672 272,607    
Recurring [Member] | Mortgage-Backed Securities [Member]        
Securities available for sale [Abstract]        
Securities available for sale 303,089 373,362    
Recurring [Member] | Collateralized Mortgage Obligations [Member]        
Securities available for sale [Abstract]        
Securities available for sale 106,320 106,715    
Recurring [Member] | Other Securities [Member]        
Securities available for sale [Abstract]        
Securities available for sale 12,487 12,078    
Recurring [Member] | Level 1 [Member]        
Securities available for sale [Abstract]        
Asset-backed and other amortizing securities 0 0    
Loans held for sale (mandatory) 0 0    
Mortgage servicing rights 0 0    
Asset derivatives 0 0    
Liability derivatives 0 0    
Recurring [Member] | Level 1 [Member] | U.S. Government and Agencies [Member]        
Securities available for sale [Abstract]        
Securities available for sale 0 0    
Recurring [Member] | Level 1 [Member] | State and Municipal [Member]        
Securities available for sale [Abstract]        
Securities available for sale 0 0    
Recurring [Member] | Level 1 [Member] | Mortgage-Backed Securities [Member]        
Securities available for sale [Abstract]        
Securities available for sale 0 0    
Recurring [Member] | Level 1 [Member] | Collateralized Mortgage Obligations [Member]        
Securities available for sale [Abstract]        
Securities available for sale 0 0    
Recurring [Member] | Level 1 [Member] | Other Securities [Member]        
Securities available for sale [Abstract]        
Securities available for sale 0 0    
Recurring [Member] | Level 2 [Member]        
Securities available for sale [Abstract]        
Asset-backed and other amortizing securities 26,936 33,572    
Loans held for sale (mandatory) 47,593 80,174    
Mortgage servicing rights 0 0    
Asset derivatives 7,328 6,734    
Liability derivatives (535) (4,357)    
Recurring [Member] | Level 2 [Member] | U.S. Government and Agencies [Member]        
Securities available for sale [Abstract]        
Securities available for sale 0 4,753    
Recurring [Member] | Level 2 [Member] | State and Municipal [Member]        
Securities available for sale [Abstract]        
Securities available for sale 275,672 272,607    
Recurring [Member] | Level 2 [Member] | Mortgage-Backed Securities [Member]        
Securities available for sale [Abstract]        
Securities available for sale 303,089 373,362    
Recurring [Member] | Level 2 [Member] | Collateralized Mortgage Obligations [Member]        
Securities available for sale [Abstract]        
Securities available for sale 106,320 106,715    
Recurring [Member] | Level 2 [Member] | Other Securities [Member]        
Securities available for sale [Abstract]        
Securities available for sale 12,487 12,078    
Recurring [Member] | Level 3 [Member]        
Securities available for sale [Abstract]        
Asset-backed and other amortizing securities 0 0    
Loans held for sale (mandatory) 0 0    
Mortgage servicing rights 19,700 9,049    
Asset derivatives 0 0    
Liability derivatives 0 0    
Recurring [Member] | Level 3 [Member] | U.S. Government and Agencies [Member]        
Securities available for sale [Abstract]        
Securities available for sale 0 0    
Recurring [Member] | Level 3 [Member] | State and Municipal [Member]        
Securities available for sale [Abstract]        
Securities available for sale 0 0    
Recurring [Member] | Level 3 [Member] | Mortgage-Backed Securities [Member]        
Securities available for sale [Abstract]        
Securities available for sale 0 0    
Recurring [Member] | Level 3 [Member] | Collateralized Mortgage Obligations [Member]        
Securities available for sale [Abstract]        
Securities available for sale 0 0    
Recurring [Member] | Level 3 [Member] | Other Securities [Member]        
Securities available for sale [Abstract]        
Securities available for sale 0 0    
Non-recurring [Member]        
Assets Measured at Fair Value on a Non-Recurring Basis [Abstract]        
Impaired loans 6,427 11,926    
Other real estate owned 0 1,353    
Non-recurring [Member] | Level 1 [Member]        
Assets Measured at Fair Value on a Non-Recurring Basis [Abstract]        
Impaired loans 0 0    
Other real estate owned 0 0    
Non-recurring [Member] | Level 2 [Member]        
Assets Measured at Fair Value on a Non-Recurring Basis [Abstract]        
Impaired loans 0 0    
Other real estate owned 0 0    
Non-recurring [Member] | Level 3 [Member]        
Assets Measured at Fair Value on a Non-Recurring Basis [Abstract]        
Impaired loans 6,427 11,926    
Other real estate owned $ 0 $ 1,353