Note 5 - Loans (Details Textual) $ in Thousands	12 Months Ended
Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)
Loans and Leases Receivable, Deferred Expense Income	$ (592)	$ (600)
Loans and Leases Receivable, Collateral for Secured Borrowings	10,500	18,200
Financing Receivable, Recorded Investment, Past Due, Total	10,544	11,839
Impaired or Nonaccrual Financing Receivable, Interest Received Used to Reduce Principal	93	338	$ 307
Loans and Leases Receivable, Impaired, Interest Lost on Nonaccrual Loans	391	159	149
Impaired Financing Receivable, Interest Income, Cash Basis Method, Total	0	0	$ 0
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing	745	2
Financing Receivable, Modifications, Recorded Investment	$ 42	$ 869
Financing Receivable, Modifications, Number of Contracts	0	2	0
Financing Receivable, Modifications, Subsequent Default, Number of Contracts	0	0	0
Allowance for Credit Losses, Change in Method of Calculating Impairment	$ 42	$ 48
Loans and Leases Receivable, Impaired, Commitment to Lend	0	0
Mortgage Loans in Process of Foreclosure, Amount	528	62
Commercial Portfolio Segment [Member]
Financing Receivable, Modifications, Number of Contracts			2
Financing Receivable, Modifications, Pre-Modification Recorded Investment		39
Financing Receivable, Modifications, Post-Modification Recorded Investment		39
Residential Real Estate Portfolio Segment [Member]
Financing Receivable, Modifications, Pre-Modification Recorded Investment		12
Financing Receivable, Modifications, Post-Modification Recorded Investment		14
Consumer Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due, Total		169
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing
Financing Receivable, Modifications, Number of Contracts			1
Directors and Executive Officers [Member]
Financing Receivable, Recorded Investment, Past Due, Total	$ 500	$ 0

The amount of interest received on impaired or nonaccrual financing receivables that was used to reduce principal.

No definition available.

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- Definition

Represents the net amount of deferred loan costs or deferred interest and fee income for the period.

+ References

No definition available.

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- Definition

Amount of allowance for credit losses related to receivables which had been measured under a general allowance for credit losses methodology that are now identified as troubled debt restructurings.

+ References

No definition available.

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- Definition

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

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 33
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Post-modification amount of investment in financing receivables modified by troubled debt restructurings.

+ References

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- Definition

Pre-modification amount of investment in financing receivables modified by troubled debt restructurings.

+ References

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- Definition

The amount of the outstanding recorded investment related to financing receivables that have been modified by troubled debt restructurings.

+ References

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-Publisher FASB
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- Definition

Number of financing receivables that have been modified by troubled debt restructurings within the previous 12 months and for which there was a payment default.

+ References

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- Definition

Recorded investment in financing receivables that are 90 days or more past due and still accruing.

+ References

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- Definition

Recorded Investment in financing receivables that are past due at the balance sheet date.

+ References

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- Definition

Amount of interest income recognized on a cash-basis method of accounting that the financing receivables (with related allowance for credit losses and without a related allowance for credit losses) were impaired.

+ References

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- Definition

Reflects the aggregate value of loans, trade receivables, securities and financial instruments that serve as collateral for obligations arising from a transfer of financial assets recorded as a secured borrowing.

+ References

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- Definition

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

+ References

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- Definition

Reflects the amount of additional interest income that would have been recorded if impaired or nonperforming loans were instead current, in compliance with their original terms, and outstanding throughout the reporting period or since origination (if held for part of the period).

+ References

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- Definition

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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