Note 3 - Acquisition - Summary of the Estimated Fair Value of Assets Acquired and Liabilities Assumed at the Acquisition Date (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018	Sep. 08, 2017
Estimated goodwill	$ 28,616	$ 28,616
Benchmark Bancorp, Inc. [Member]
Cash and cash equivalents			$ 6,092
Restricted stock			472
Loans, including loans held for sale			98,804
Premises and equipment			2,483
Core deposit intangible asset			493
Other real estate owned			141
Other assets, including accrued interest receivable			5,342
Total assets acquired			113,827
Deposits			95,545
Other liabilities			2,661
Total liabilities assumed			98,206
Net identifiable assets			15,621
Estimated goodwill			15,131
Total cash paid			$ 30,752

Amount of other real estate acquired, at the acquisition date.

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Amount of assets acquired at the acquisition date.

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Amount of currency on hand as well as demand deposits with banks or financial institutions, acquired at the acquisition date. 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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Amount of investments in debt and equity securities, including, but not limited to, held-to-maturity, trading and available-for-sale expected to be converted to cash, sold or exchanged within one year or the normal operating cycle, if longer, acquired at the acquisition date.

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The amount of financial assets (as defined) recognized as of the acquisition date.

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The amount of financial liabilities assumed (as defined) which have been recognized as of the acquisition date.

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Amount of intangible assets, excluding goodwill, acquired at the acquisition date.

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Amount of liabilities assumed at the acquisition date.

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Amount recognized as of the acquisition date for the identifiable assets acquired in excess of (less than) the aggregate liabilities assumed.

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Amount of other liabilities due after one year or the normal operating cycle, if longer, assumed at the acquisition date.

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Amount of other assets expected to be realized or consumed after one year or the normal operating cycle, if longer, acquired at the acquisition date.

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The amount of property, plant, and equipment recognized as of the acquisition date.

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Amount recognized for assets, including goodwill, in excess of (less than) the aggregate liabilities assumed.

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Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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