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Note 3 - Acquisition Activity (Details Textual) $ in Thousands		1 Months Ended	3 Months Ended	4 Months Ended
	Aug. 31, 2018 USD ($) shares	Sep. 30, 2018 USD ($)	Mar. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets, Total	$ 167,775
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Loans	154,577
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deposits	140,375
Goodwill, Ending Balance	7,435		$ 7,435	$ 7,400
Business Combination, Consideration Transferred, Total	24,398
The Peoples Bank [Member]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets, Total	166,531
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Loans	156,772
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deposits	140,033
Goodwill, Ending Balance	$ 7,400			7,400
Assets, Fair Value Adjustment			0
Liabilities, Fair Value Adjustment			$ 0
Business Acquisition, Percentage of Voting Interests Acquired	100.00%
Business Combination, Consideration Transferred, Total	$ 23,400
Business Combination, Deductions Multiple	1.62
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Consideration Transferred				$ 400
Business Combination, Consideration Transferred, Percent Cash	90.00%
Payments to Acquire Businesses, Gross	$ 20,700	$ 1,400
Business Combination, Consideration Transferred, Percent Equity Interests	10.00%
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares | shares	204,355

X

- Definition

The percent of the consideration transferred in a business combination that was comprised of cash.

+ References

No definition available.

+ Details

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X

- Definition

The percent of consideration transferred as part of a business combination that was associated with equity interests.

+ References

No definition available.

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X

- Definition

The deductions multiple applied to a business combination.

+ References

No definition available.

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X

- Definition

Amount of deposits assumed at the acquisition date.

+ References

No definition available.

+ Details

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X

- Definition

Amount of loans acquired at the acquisition date.

+ References

No definition available.

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X

- Definition

Amount of addition (reduction) to the amount at which an asset could be incurred (settled) in a current transaction between willing parties.

+ References

No definition available.

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X

- Definition

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

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 50
-Paragraph 1
-Subparagraph (b)(4)
-URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e6927-128479

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X

- Definition

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

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-SubTopic 10
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-Paragraph 2
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X

- 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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X

- Definition

This element represents the amount of any measurement period adjustment (as defined) realized during the reporting period to items of consideration transferred in connection with a business combination for which the initial accounting was incomplete.

+ References

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- Definition

Amount of assets acquired at the acquisition date.

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- Definition

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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X

- Definition

Amount of addition (reduction) to the amount at which a liability could be incurred (settled) in a current transaction between willing parties.

+ References

No definition available.

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X

- Definition

The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price.

+ References

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