Note 12 - Borrowings (Details Textual) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2020	Dec. 31, 2019
Federal Home Loan Bank Percentage of Fair Value of Collateral	45.00%
Long-term Line of Credit, Total	$ 0	$ 0
Notes Payable to Banks [Member]
Proceeds from Issuance of Long-term Debt, Total		$ 11,200
Debt Instrument, Interest Rate, Effective Percentage		4.24%
Notes Payable to Banks [Member] \| London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument, Basis Spread on Variable Rate		2.50%
Line of Credit [Member]
Line of Credit Facility, Maximum Borrowing Capacity		$ 3,000
Line of Credit [Member] \| Minimum [Member]
Debt Instrument, Interest Rate, Stated Percentage	4.00%
Line of Credit [Member] \| London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument, Basis Spread on Variable Rate	2.50%
Federal Home Loan Bank [Member]
Line of Credit Facility, Remaining Borrowing Capacity	$ 162,400
Federal Reserve Bank Borrowings [Member]
Line of Credit Facility, Remaining Borrowing Capacity	37,200
Long-term Line of Credit, Total	$ 0	$ 0
Mortgage Loans Freeof Other Pledges Liensand Encumbrances [Member]
Federal Home Loan Bank Percentage of Fair Value of Collateral	80.00%
Investment Securities Freeof Other Pledges Liensand Encumbrances [Member]
Federal Home Loan Bank Percentage of Fair Value of Collateral	95.00%

Represents Federal Home Loan Bank percentage of fair value of collateral.

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- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

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- Definition

Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
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-Paragraph 6
-Subparagraph (a)
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-Name Accounting Standards Codification
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-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(1))
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

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Contractual interest rate for funds borrowed, under the debt agreement.

+ References

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- Definition

The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
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- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

+ Details

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- Definition

Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

+ References

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- Definition

The cash inflow from a debt initially having maturity due after one year or beyond the operating cycle, if longer.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
-Section 45
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