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Employee Benefit Plans (Details Textual) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Defined Benefit Plan Disclosure [Line Items]      
Liability $ 231    
Benefit 7 $ 5 $ 31
National Bancshares Corporation      
Defined Benefit Plan Disclosure [Line Items]      
(Benefit) expense under the plan 36 105 11
Liability under the Plan $ 751 799  
Director age for eligibility for annual retirement benefit plan 70 years    
Maximum years for benefit payment under the plan 15 years    
Cortland Acquisition      
Defined Benefit Plan Disclosure [Line Items]      
Period of benefits paid for after retirement 15 years    
Payment benefit for director retirement $ 10    
Period over which benefits paid to directors after retirement 10 years    
Liability for post-retirement benefits $ 1,000 1,100  
Expense recognized for plans 37 87 11
Benefits expected to be paid in 2023 81    
Cortland Acquisition | Officers’ Plan      
Defined Benefit Plan Disclosure [Line Items]      
Liability for post-retirement benefits 870,000 919,000  
Cortland Acquisition | Directors Plan      
Defined Benefit Plan Disclosure [Line Items]      
Liability for post-retirement benefits 148 143  
Emclaire Acquisition      
Defined Benefit Plan Disclosure [Line Items]      
(Benefit) expense under the plan 37    
Liability for post-retirement benefits 846    
Benefits expected to be paid in 2023 $ 62    
Retirement Savings Plan      
Defined Benefit Plan Disclosure [Line Items]      
Employees who have completed no days of service 90 days    
Percentage of matching contribution by company 50.00%    
(Benefit) expense under the plan $ 1,000 870 814
Retirement Savings Plan | Maximum      
Defined Benefit Plan Disclosure [Line Items]      
Percentage of the participants' voluntary contributions of gross wages 6.00%    
Profit Sharing Plan      
Defined Benefit Plan Disclosure [Line Items]      
(Benefit) expense under the plan   $ 207 $ 268
Annual compensation for associates, Percent 2.00% 2.00% 2.00%
Deferred Compensation Plan      
Defined Benefit Plan Disclosure [Line Items]      
(Benefit) expense under the plan $ 5 $ 5 $ 6
Liability under the Plan 71 83  
Deferred compensation plan liability recorded $ 3,400 $ 2,500