Note 12 - Fair Value Measurements - Estimated Fair Values of the Company's Financial Information (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Available-for-sale debt securities	$ 302,638	$ 272,839
Equity securities, at fair value	934	920
Derivative liabilities	14
Reported Value Measurement [Member]
Available-for-sale debt securities	302,638	272,839
Reported Value Measurement [Member] \| Fair Value, Inputs, Level 1 [Member]
Cash and short term investments	45,547	34,565
Equity securities, at fair value	934	920
Reported Value Measurement [Member] \| Fair Value, Inputs, Level 2 [Member]
Restricted stock	4,224	3,804
Loans held for sale	470	1,061
Accrued interest receivable	3,387	3,234
Deposits	1,001,562	1,001,709
Borrowed funds	98,244	57,219
Accrued interest payable	261	258
Derivative liabilities	14
Reported Value Measurement [Member] \| Fair Value, Inputs, Level 3 [Member]
Loans, net	825,028	819,529
Equity securities without readily determinable fair values	1,658	1,658
Servicing rights	338	356
Estimate of Fair Value Measurement [Member]
Available-for-sale debt securities	302,638	272,839
Estimate of Fair Value Measurement [Member] \| Fair Value, Inputs, Level 1 [Member]
Cash and short term investments	45,547	34,565
Equity securities, at fair value	934	920
Estimate of Fair Value Measurement [Member] \| Fair Value, Inputs, Level 2 [Member]
Restricted stock	4,224	3,804
Loans held for sale	470	1,061
Accrued interest receivable	3,387	3,234
Deposits	1,003,411	1,001,829
Borrowed funds	98,626	57,234
Accrued interest payable	261	258
Derivative liabilities	14
Estimate of Fair Value Measurement [Member] \| Fair Value, Inputs, Level 3 [Member]
Loans, net	815,991	810,074
Equity securities without readily determinable fair values	1,658	1,658
Servicing rights	$ 805	$ 790

The fair value portion of liabilities related to accrued interest on debt.

No definition available.

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The fair value of interest earned but not received.

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The fair value of the rights retained or purchased to service mortgages.

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Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

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Fair value portion of deposit liabilities held by the entity, including, but not limited to, foreign and domestic, interest and noninterest bearing, demand deposits, saving deposits, negotiable orders of withdrawal (NOW) and time deposits.

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No definition available.

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Fair value, after the effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes liabilities not subject to a master netting arrangement and not elected to be offset.

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Amount of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI).

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Amount of restricted investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI).

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Amount of investment in equity security without readily determinable fair value.

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Fair value portion of loans held-for-sale including, but not limited to, mortgage loans and finance receivables.

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Fair value portion of loan receivable, including, but not limited to, mortgage loans held for investment, finance receivables held for investment, policy loans on insurance contracts.

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The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission.

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