Note 2 - Fair Value of Financial Instruments (Details Textual) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018
Selling Costs, Percentage	10.00%
Impaired Financing Receivable, Related Allowance	$ 261		$ 98
Financing Receivables, Impaired, Troubled Debt Restructuring, Write-down	0
Other Real Estate, Ending Balance	228		228
Other Real Estate, Gross	2,217		2,217
Real Estate Owned, Valuation Allowance, Ending Balance	1,989		1,989
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Write-down or Reserve, Amount	0	$ 0
Collateral Dependent Loans [Member]
Impaired Financing Receivable, with Related Allowance, Recorded Investment	3,784		362
Impaired Financing Receivable, Related Allowance	261	0	98
Financing Receivable, Credit Loss, Expense (Reversal)	163	$ 0	4
Financing Receivables, Impaired, Troubled Debt Restructuring, Write-down	$ 0		$ 0

The gross caryring amount of other real estate not separately disclosed.

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- Definition

The percent selling cost makes up.

+ References

No definition available.

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- Definition

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

+ References

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Amount of allowance for credit losses related to recorded investment.

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Amount of investment in impaired financing receivables for which there is a related allowance for credit losses.

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Carrying amount of other real estate not separately disclosed, including, but not limited to, real estate investments, real estate loans that qualify as investments in real estate, and premises that are no longer used in operations may also be included in real estate owned. This does not include real estate assets taken in settlement of troubled loans through surrender or foreclosure.

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Amount of credit loss expense (reversal of expense) for financing receivable.

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For each period for which an income statement is required, disclosure of the changes in the allowance, including balances at end of period.

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- Definition

Amount of write-down or reserve recognized in the income statement on real estate investments for entities with a substantial portion of business acquiring and holding investment real estate.

+ References

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