Financing receivable modifications number of newly identified troubled debt restructurings.

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The ratio of the amount of mortgage to the underlying collateral.

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No definition available.

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Indicates the number of mortgages for which foreclosure proceedings are in process under each classification.

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No definition available.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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No definition available.

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Carrying value as of the balance sheet date of payments made in excess of existing cash balances, which will be honored by the bank but reflected as a loan to the entity. Overdrafts generally have a very short time frame for correction or repayment and are therefore more similar to short-term bank financing than trade financing.

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For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

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Number of financing receivables that have been modified by troubled debt restructurings.

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Amount of financing receivable modified as troubled debt restructuring.

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Number of financing receivable contracts modified as troubled debt restructuring within previous 12 months, with subsequent payment default.

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Reflects the amount of the write-down related to a troubled debt restructuring.

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Amount of unfunded portion of contractual agreement to lend funds to borrower for financing receivable modified as troubled debt restructuring.

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Recorded investment of consumer mortgage loan receivables secured by residential real estate properties for which formal foreclosure proceedings are in process.

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Note 5 - Loans Receivable and the Allowance for Loan Losses (Details Textual)	12 Months Ended
	Dec. 31, 2019 USD ($) contract loan	Dec. 31, 2018 USD ($) contract loan	Dec. 31, 2017 USD ($)
Accounts Notes And Loans Receivable [Line Items]
Bank overdrafts	$ 224,000	$ 183,000
Financing receivable, modifications, recorded investment	5,891,000	3,477,000
Financing receivables, impaired, troubled debt restructuring, write-down	$ 5,000	$ 51,000	$ 3,000
Number of newly identified TDRs during the current period \| contract	6
Number of contracts \| contract	7	4
Loans and leases receivable, impaired, commitment to lend	$ 24,000	$ 0
Financing receivable, modifications, subsequent default, number of contracts \| contract	0	0
Performing Financial Instruments [Member]
Accounts Notes And Loans Receivable [Line Items]
Financing receivable, modifications, recorded investment	$ 4,760,000	$ 2,160,000
Nonperforming Financial Instruments [Member]
Accounts Notes And Loans Receivable [Line Items]
Financing receivable, modifications, recorded investment	$ 1,131,000	$ 1,317,000
Residential Portfolio Segment [Member]
Accounts Notes And Loans Receivable [Line Items]
Mortgage loan on real estate number of loan in foreclosure \| loan	4	5
Mortgage loans in process of foreclosure, amount	$ 467,000	$ 537,000
Residential Portfolio Segment [Member] \| Maximum [Member]
Accounts Notes And Loans Receivable [Line Items]
Loan to value ratio	80.00%
Commercial Portfolio Segment [Member]
Accounts Notes And Loans Receivable [Line Items]
Number of contracts \| contract	3
Residential Buildings and Dwellings [Member] \| Credit Concentration Risk [Member]
Accounts Notes And Loans Receivable [Line Items]
Concentration of loans to lessors percentage of total loans	16.60%	15.80%
Nonresidential Buildings [Member] \| Credit Concentration Risk [Member]
Accounts Notes And Loans Receivable [Line Items]
Concentration of loans to lessors percentage of total loans	18.30%	18.10%