Note 2 - Acquisitions (Details Textual) $ in Thousands		3 Months Ended
Sep. 11, 2019 USD ($)	Mar. 31, 2020 USD ($)	Mar. 31, 2019 USD ($)
Provision for Loan and Lease Losses, Total		$ 3,500	$ 1,220
Highlands Bankshares, Inc. [Member]
Business Combination, Stock Conversion Ratio	0.2703
Business Combination, Consideration Transferred, Total	$ 86,647
Acquired Loan, Fair Value Adjustments	(14,700)
Deferred Loan Fees Excluded from Fair Value Adjustment of Acquired Loan	3,270
Death Benefits Payable, Fair Value Adjustment	320
Lease Liability, Fair Value Adjustment	(37)
Reserve for Unfunded Commitments, Fair Value Adjustment	$ (85)
Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual		7,120
Business Combination, Acquisition Related Costs		$ 1,890
Provision for Loan and Lease Losses, Total			$ 103,000,000

The increase (decrease) to acquired loan related to the fair value adjustments.

No definition available.

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- Definition

The stock conversion ratio for a business combination.

+ References

No definition available.

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- Definition

The increase (decrease) to death benefits payable related to the fair value adjustment.

+ References

No definition available.

+ Details

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- Definition

The amount of deferred loan fees that excluded from the fair value adjustment of acquired loan.

+ References

No definition available.

+ Details

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- Definition

The increase (decrease) to lease liability related to the fair value adjustment.

+ References

No definition available.

+ Details

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- Definition

The increase (decrease) to reserve for unfunded commitments related to the fair value adjustment.

+ References

No definition available.

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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.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 25
-Paragraph 23
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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.

+ References

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-Name Accounting Standards Codification
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- Definition

This element represents the amount of earnings or loss of the acquiree since the acquisition date included in the consolidated income statement for the reporting period.

+ References

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-Publisher FASB
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- Definition

Amount of expense related to estimated loss from loan and lease transactions.

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