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Loans (Details 1) - National Bancshares Corporation
$ in Thousands
Dec. 31, 2020
USD ($)
Financing Receivable Impaired [Line Items]  
Total outstanding balance $ 1,178
Carrying amount, net of allowance 917
Commercial real estate, Non-owner occupied | Commercial real estate  
Financing Receivable Impaired [Line Items]  
Loans acquired with deteriorated credit quality 574
Commercial, Commercial and industrial | Commercial  
Financing Receivable Impaired [Line Items]  
Loans acquired with deteriorated credit quality $ 604