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Troubled Debt Restructurings (Details Textual)
3 Months Ended 6 Months Ended
Jun. 30, 2019
USD ($)
Loans
Jun. 30, 2018
USD ($)
Loans
Jun. 30, 2019
USD ($)
Loans
Jun. 30, 2018
USD ($)
Loans
Dec. 31, 2018
USD ($)
Financing Receivable Modifications [Line Items]          
Total troubled debt restructurings $ 5,100,000   $ 5,100,000   $ 5,500,000
Specific reserves to loans 271,000   271,000   276,000
Commitments to lend additional amounts to borrowers classified as troubled debt restructurings 0   0   0
Provision for loan losses $ 750,000 $ 750,000 1,300,000 $ 1,525,000  
Commercial loans          
Financing Receivable Modifications [Line Items]          
Provision for loan losses     $ 0    
Troubled debt restructured loans with subsequent payment defaults | Loans | Loans 4 1 4 1  
Loans default payment past due period     30 days    
Residential real estate loan          
Financing Receivable Modifications [Line Items]          
Troubled debt restructured loans with subsequent payment defaults | Loans | Loans 1 3 1 3  
Loans default payment past due period       30 days  
Residential real estate, Home equity lines of credit          
Financing Receivable Modifications [Line Items]          
Troubled debt restructured loans with subsequent payment defaults | Loans | Loans 1 1 1 1  
Residential real estate, Indirect Loan          
Financing Receivable Modifications [Line Items]          
Troubled debt restructured loans with subsequent payment defaults | Loans | Loans 1   1    
Troubled debt restructurings          
Financing Receivable Modifications [Line Items]          
Specific reserves to loans $ 67,000   $ 67,000   $ 72,000
Allowance adjustment charge offs 44,000 $ 20,000 51,000 $ 39,000  
Provision for loan losses $ 44,000 $ 20,000 $ 51,000 $ 39,000  
Contractual Interest Rate Reduction          
Financing Receivable Modifications [Line Items]          
Reduction of the notes stated interest rate 0.24%        
Contractual Interest Rate Reduction | Maximum          
Financing Receivable Modifications [Line Items]          
Reduction of the notes stated interest rate   2.50% 2.74% 2.50%  
Contractual Interest Rate Reduction | Minimum          
Financing Receivable Modifications [Line Items]          
Reduction of the notes stated interest rate   1.75% 0.24% 1.75%  
Extended Maturity          
Financing Receivable Modifications [Line Items]          
Maturity period loans 124 months        
Extended Maturity | Maximum          
Financing Receivable Modifications [Line Items]          
Maturity period loans   25 months 124 months 25 months  
Extended Maturity | Minimum          
Financing Receivable Modifications [Line Items]          
Maturity period loans   5 months 86 months 5 months