Annual report pursuant to Section 13 and 15(d)

INVESTMENT SECURITIES - (Narrative) (Details)

v3.23.4
INVESTMENT SECURITIES - (Narrative) (Details)
 12 Months Ended
Dec. 31, 2022
USD ($)
Securities
Dec. 31, 2021
USD ($)
Securities
Dec. 31, 2020
USD ($)
Sep. 30, 2022
USD ($)
Jun. 30, 2022
USD ($)
Mar. 31, 2022
USD ($)
Dec. 31, 2019
USD ($)
Investments Securities [Abstract]              
Securities pledged to secure public deposits $ 656,100,000 $ 463,800,000          
Schedule of Available-for-sale Securities [Line Items]              
Available-for-sale Securities and Held-to-maturity investments in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions, Total | Securities 928 401          
Available-for-sale Securities and Held-To-Maturity, Continuous Unrealized Loss Position, Accumulated Loss $ 90,000,000.0 $ 10,200,000          
Provision For Loan Losses Expensed $ 7,397,000 (2,842,000) $ 9,035,000        
Number of holdings securities in an amount greater than 10% of shareowner's equity | Securities 0            
Amortized Cost $ 455,232,000 660,732,000   $ 461,646,000 $ 643,679,000 $ 655,927,000  
Fair Value 413,294,000 654,611,000   416,745,000 601,405,000 624,361,000  
Unrealized Losses 41,946,000 7,460,000          
Allowance for Credit Losses 25,068,000 21,606,000 $ 23,816,000 22,747,000 21,463,000 20,788,000 $ 13,905,000
Equity Securities 10,000 861,000   $ 1,349,000 $ 900,000 $ 855,000  
Securities held nonaccrual status $ 0            
Municipal Securities [Member]              
Schedule of Available-for-sale Securities [Line Items]              
Available-for-sale Securities and Held-to-maturity investments in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions, Total | Securities 127            
Allowance for Credit Losses $ 13,000            
U.S. Treasury Securities [Member]              
Schedule of Available-for-sale Securities [Line Items]              
Available-for-sale Securities and Held-to-maturity investments in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions, Total | Securities 87            
Amortized Cost $ 23,977,000 190,409,000          
Fair Value 22,050,000 187,868,000          
Unrealized Losses 1,928,000 2,606,000          
U.S. Government Agency [Member]              
Schedule of Available-for-sale Securities [Line Items]              
Amortized Cost 198,888,000 238,490,000          
Fair Value 186,052,000 237,578,000          
Unrealized Losses 12,863,000 2,141,000          
Allowance for Credit Losses 0            
Estimated write off of loans and leases receivable $ 0            
U.S. government agency and mortgage-backed securities [Member]              
Schedule of Available-for-sale Securities [Line Items]              
Available-for-sale Securities and Held-to-maturity investments in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions, Total | Securities 714            
Available-for-sale Securities [Member]              
Schedule of Available-for-sale Securities [Line Items]              
Number of available for sale securities transferred | Securities 33            
Amortized Cost $ 168,400,000            
Fair Value 159,000,000.0            
Unrealized Losses 7,900,000            
Corporate Debt Securities [Member]              
Schedule of Available-for-sale Securities [Line Items]              
Amortized Cost 97,119,000 87,537,000          
Fair Value 88,236,000 86,222,000          
Unrealized Losses 8,874,000 $ 1,304,000          
Allowance for Credit Losses $ 28,000