Note 9 - Revenue From Contracts With Customers - Noninterest Income (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Noninterest income, financial service	$ 1,424	$ 1,351	$ 2,664	$ 2,583
Net gains on loans and investments	246	194	438	435
Increase in cash value of life insurance	70	85	118	128
Other	28	106	53	116
Other noninterest income	344	385	609	679
Total noninterest income	1,768	1,736	3,273	3,262
Deposit Account [Member]
Noninterest income, financial service	516	545	977	1,054
ATM and Debit Card Fees [Member]
Noninterest income, financial service	729	643	1,376	1,243
Investment Advisory, Management and Administrative Service [Member]
Noninterest income, financial service	146	130	244	218
Product and Service, Other [Member]
Noninterest income, financial service	$ 33	$ 33	$ 67	$ 68

The amount of gain (loss) on loans and investment.

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, excluding revenue from contracts with customers.

+ References

No definition available.

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- Definition

Amount of revenue earned, classified as other, excluding interest income and revenue from contract with customer.

+ References

No definition available.

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- Definition

Earnings on or other increases in the value of the cash surrender value of bank owned life insurance policies.

+ 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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- Definition

+ References

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- Definition

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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