Note 1 - Summary of Significant Accounting Policies (Details Textual) - USD ($) $ in Thousands	9 Months Ended
Sep. 30, 2019	Jan. 01, 2019	Dec. 31, 2018
Percentage of Loan Portfolio Concentrated in Loans Secured by Real Estate	85.00%
Discounted Percentage to Account for Selling and Marketing Costs	10.00%
Probability of Uncertain Tax Positions of Being Realized upon Settlement, Minimum	50.00%
Operating Lease, Liability, Total	$ 585
Accounting Standards Update 2016-02 [Member]
Operating Lease, Right-of-Use Asset		$ 483
Operating Lease, Liability, Total		$ 483
Other Assets [Member]
Cash Surrender Value of Life Insurance	21,480		$ 17,598
Operating Lease, Right-of-Use Asset	$ 676

Discounted percentage to account for selling and marketing costs.

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- Definition

Percentage of loan portfolio concentrated in loans secured by real estate.

+ References

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- Definition

Minimum probability of uncertain tax positions of being realized upon settlement.

+ References

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- Definition

Carrying amount as of the balance sheet date of amounts which could be received based on the terms of the insurance contract upon surrendering life policies owned by the entity.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section 45
-Paragraph 4
-Subparagraph (d)
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-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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- Definition

Present value of lessee's discounted obligation for lease payments from operating lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 45
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=77888419&loc=SL77918627-209977

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Amount of lessee's right to use underlying asset under operating lease.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 45
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