Note 9 - Mortgage Banking Derivatives (Details Textual) - USD ($)	Mar. 31, 2020	Jan. 01, 2020	Dec. 31, 2019
Interest Rate Lock Commitments [Member]
Derivative, Notional Amount	$ 16,667,000		$ 10,307,000
Derivative Asset, Fair Value, Gross Asset, Total	503,000		328,000
Forward Contracts [Member]
Derivative, Notional Amount	22,000,000		14,000,000
Derivative Liability, Fair Value, Gross Liability, Total	$ 385,000	$ 385,000	$ 23,000

Fair value, before effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes liabilities elected not to be offset. Excludes liabilities not subject to a master netting arrangement.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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-Section 50
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
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-Section 50
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Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 20
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-URI http://asc.fasb.org/extlink&oid=99393222&loc=SL20226000-175313

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