Note 21 - Business Acquisition (Details Textual) - USD ($)		12 Months Ended
Dec. 01, 2022	Dec. 31, 2022	Dec. 31, 2021
Goodwill, Impairment Loss		$ 0	$ 0
Amortization of Intangible Assets		$ 372,000	321,000
Core Deposits [Member]
Finite-Lived Intangible Asset, Useful Life (Year)		10 years
Finite-Lived Intangible Assets, Accumulated Amortization		$ 2,100,000	1,700,000
Liberty Bancshares Inc [Member]
Business Acquisition, Percentage of Voting Interests Acquired	100.00%
Business Combination, Amount Shares Issued to Acquiree's Shareholders Per Share (in shares)	2.752
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares (in shares)	2,561,513
Business Combination, Consideration Transferred, Total	$ 73,265,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Including Goodwill		16,700,000
Goodwill, Impairment Loss		0
Amortization of Intangible Assets		0
Business Acquisition, Pro Forma Net Income (Loss)		21,142,000	16,297,000
Liberty Bancshares Inc [Member] \| Acquisition-related Costs [Member]
Business Acquisition, Pro Forma Net Income (Loss)		8,500,000	$ (8,500,000)
Liberty Bancshares Inc [Member] \| Noninterest Expense [Member]
Business Combination, Acquisition Related Costs		2,400,000
Liberty Bancshares Inc [Member] \| Core Deposits [Member]
Finite-Lived Intangible Asset, Useful Life (Year)	10 years
Finite-Lived Intangible Assets, Gross, Total		6,700,000
Finite-Lived Intangible Assets, Accumulated Amortization		$ 63,000
Liberty Bancshares Inc [Member] \| Common Stock [Member]
Business Combination, Amount Shares Issued to Acquiree's Shareholders Per Share (in shares)	2.752
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares (in shares)	2,600,000

Amount of shares issued to acquiree's shareholders per share as part of a business combination.

No definition available.

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- Definition

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

+ References

No definition available.

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- Definition

The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

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- Definition

Number of shares of equity interests issued or issuable to acquire entity.

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- Definition

Percentage of voting equity interests acquired at the acquisition date in the business combination.

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- Definition

The pro forma net Income or Loss for the period as if the business combination or combinations had been completed at the beginning of a period.

+ References

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- Definition

This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities.

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- Definition

Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

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- Definition

Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

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- Definition

Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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