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Troubled Debt Restructurings (Details Textual)	3 Months Ended
	Mar. 31, 2019 USD ($) Loans	Mar. 31, 2018 USD ($)	Dec. 31, 2018 USD ($)
Financing Receivable Modifications [Line Items]
Total troubled debt restructurings	$ 5,300,000		$ 5,500,000
Specific reserves to customers	270,000		276,000
Commitments to lend additional amounts to borrowers classified as troubled debt restructurings	0		0
Provision for loan losses	550,000	$ 775,000
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 customers	$ 66,000		$ 72,000
Allowance adjustment charge offs	6,000	$ 19,000
Provision for loan losses	$ 6,000	$ 19,000
Troubled debt restructurings | Residential real estate loan
Financing Receivable Modifications [Line Items]
Troubled debt restructured loans with subsequent payment defaults | Loans | Loans	3
Loans default payment past due period	30 days
Contractual Interest Rate Reduction
Financing Receivable Modifications [Line Items]
Reduction of the notes stated interest rate		1.75%
Contractual Interest Rate Reduction | Minimum
Financing Receivable Modifications [Line Items]
Reduction of the notes stated interest rate	2.375%
Contractual Interest Rate Reduction | Maximum
Financing Receivable Modifications [Line Items]
Reduction of the notes stated interest rate	2.74%
Extended Maturity
Financing Receivable Modifications [Line Items]
Maturity period loans	86 months	6 months

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-SubTopic 10
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Reflects the unfunded portion of contractual agreements to lend funds to borrowers for loans whose terms have been modified by troubled debt restructuring.

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