Note 9 - Revenue Recognition - Noninterest Income (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Noninterest Income (in-scope of Topic 606)	$ 1,576	$ 1,570	$ 4,572	$ 4,687
Noninterest Income (out-of-scope of Topic 606)	522	344	1,871	1,118
Total noninterest income	2,098	1,914	6,443	5,805
Deposit Account [Member]
Noninterest Income (in-scope of Topic 606)	643	673	1,840	2,037
Product and Service, Other [Member]
Noninterest Income (in-scope of Topic 606)	46	20	149	87
Credit and Debit Card [Member]
Noninterest Income (in-scope of Topic 606)	350	362	1,015	1,071
Fiduciary and Trust [Member]
Noninterest Income (in-scope of Topic 606)	440	355	1,208	1,131
Insurance and Investment [Member]
Noninterest Income (in-scope of Topic 606)	$ 97	$ 160	$ 360	$ 361

Amount, including tax collected from customer, of revenue (outside of topic 606) from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value-added and excise.

No definition available.

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- Definition

The total amount of noninterest income which may be derived from: (1) fees and commissions; (2) premiums earned; (3) insurance policy charges; (4) the sale or disposal of assets; and (5) other sources not otherwise specified.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 220
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-04.13)
-URI http://asc.fasb.org/extlink&oid=116637391&loc=SL114874048-224260

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Amount, including tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value-added and excise.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130545-203045

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130543-203045

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