Note 18 - Fair Value of Financial Instruments - Schedule of Fair Value Hierarchy Level and Estimated Fair Value of Significant Financial Instruments (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Securities held to maturity, fair value	$ 7,982	$ 8,632
Reported Value Measurement [Member] \| Fair Value, Inputs, Level 1 [Member]
Cash and due from banks	121,630	114,763
Federal funds sold and other cash equivalents	57,000	67,000
Interest-earning deposits in other financial institutions	600	600
Mortgage loans held for sale	23,886	108,194
Accrued interest receivable	15,542	8,942
Accrued interest payable	3,645	2,987
Reported Value Measurement [Member] \| Fair Value, Inputs, Level 2 [Member]
Investment securities - AFS	214,662	126,069
Securities held to maturity, fair value	7,569	8,332
Mortgage and SBA serving rights	14,724	17,083
Deposits	2,611,748	2,248,938
Reported Value Measurement [Member] \| Fair Value, Inputs, Level 3 [Member]
Loans, net	2,728,519	2,178,118
Equity security	11,854	11,826
FHLB advances	190,000	0
Long-term debt	104,305	104,049
Subordinated Debt Obligations, Fair Value Disclosure	14,229	9,673
Estimate of Fair Value Measurement [Member] \| Fair Value, Inputs, Level 1 [Member]
Cash and due from banks	121,630	114,763
Federal funds sold and other cash equivalents	57,000	67,000
Interest-earning deposits in other financial institutions	600	600
Mortgage loans held for sale	24,224	109,385
Accrued interest receivable	15,542	8,942
Accrued interest payable	3,645	2,987
Estimate of Fair Value Measurement [Member] \| Fair Value, Inputs, Level 2 [Member]
Investment securities - AFS	214,662	126,069
Securities held to maturity, fair value	7,982	8,632
Mortgage and SBA serving rights	16,253	20,752
Deposits	2,611,531	2,236,329
Estimate of Fair Value Measurement [Member] \| Fair Value, Inputs, Level 3 [Member]
Loans, net	2,741,656	2,158,970
Equity security	11,854	11,826
FHLB advances	189,965	0
Long-term debt	137,628	109,877
Subordinated Debt Obligations, Fair Value Disclosure	$ 14,562	$ 11,709

Represents federal funds sold and other cash equivalents fair value.

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- Definition

Represents interest earnings deposits in other financial institution fair value.

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No definition available.

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Fair value portion of interest payable on debt.

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No definition available.

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Fair value portion of interest earned but not received.

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No definition available.

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- Definition

Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading.

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- Definition

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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- Definition

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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Fair value of the entity's equity.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258

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Fair value of subordinated debt obligations including, but not limited to, subordinated loan, subordinated bond, subordinated debenture or junior debt.

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- Definition

Fair value portion of borrowing from Federal Home Loan Bank (FHLBank).

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-Publisher FASB
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Fair value of investment in debt security measured at amortized cost (held-to-maturity).

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- Definition

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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-Topic 310
-SubTopic 10
-URI http://asc.fasb.org/subtopic&trid=2196772

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- Definition

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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- Definition

Fair value portion of mortgage loans held-for-sale.

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- Definition

Fair value of an asset representing net future revenue from contractually specified servicing fees, late charges, and other ancillary revenues, in excess of future costs related to servicing arrangements.

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