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Troubled Debt Restructurings (Details Textual)	3 Months Ended
	Mar. 31, 2020 USD ($) Loans	Mar. 31, 2019 USD ($) Loans	Dec. 31, 2019 USD ($)
Financing Receivable Modifications [Line Items]
Total troubled debt restructurings	$ 4,700,000		$ 4,600,000
Specific reserves to loans	61,000		61,000
Commitments to lend additional amounts to borrowers classified as troubled debt restructurings	$ 0		0
Commercial farmland loans
Financing Receivable Modifications [Line Items]
Troubled debt restructured loans with subsequent payment defaults | Loans | Loans	2
Commercial loans
Financing Receivable Modifications [Line Items]
Provision for loan losses	$ 0
Troubled debt restructured loans with subsequent payment defaults | Loans | Loans	1
Loans default payment past due period	30 days
Residential real estate loan
Financing Receivable Modifications [Line Items]
Provision for loan losses		$ 0
Troubled debt restructured loans with subsequent payment defaults | Loans | Loans		2
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
Troubled debt restructurings
Financing Receivable Modifications [Line Items]
Specific reserves to loans	$ 61,000		$ 61,000
Allowance adjustment charge offs	5,000	$ 6,000
Provision for loan losses	$ 5,000	$ 6,000
Extended Maturity
Financing Receivable Modifications [Line Items]
Maturity period loans		86 months
Extended Maturity | Minimum
Financing Receivable Modifications [Line Items]
Maturity period loans	168 months
Extended Maturity | Maximum
Financing Receivable Modifications [Line Items]
Maturity period loans	180 months
Contractual Interest Rate Reduction | Minimum
Financing Receivable Modifications [Line Items]
Reduction of the notes stated interest rate		2.38%
Contractual Interest Rate Reduction | Maximum
Financing Receivable Modifications [Line Items]
Reduction of the notes stated interest rate		2.74%

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