Note 8 - Loans and Allowance for Loan Losses - Activity In the Allowance for Loan Losses (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2018	Mar. 31, 2017
Balance, beginning of period	$ 9,783	$ 9,344
Provision for loan losses	(261)	580
Recoveries	388	77
Loans charged off	(162)	(494)
Balance, end of period	9,748	9,507
Real Estate Portfolio Segment [Member]
Balance, beginning of period	8,509	8,205
Provision for loan losses	(191)	396
Recoveries	341	17
Loans charged off	(58)	(434)
Balance, end of period	8,601	8,184
Commercial Portfolio Segment [Member]
Balance, beginning of period	951	854
Provision for loan losses	(47)	(7)
Recoveries	20	49
Loans charged off	(88)	(32)
Balance, end of period	836	864
Consumer Portfolio Segment [Member]
Balance, beginning of period	323	285
Provision for loan losses	(23)	191
Recoveries	27	11
Loans charged off	(16)	(28)
Balance, end of period	$ 311	$ 459

Amount of recovery of loans and lease receivables which had previously been fully or partially written-off as bad debts.

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Amount of loans and leases that have been written off from both loan receivables and allowance reserve for credit loss.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
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-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03.7(d))
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

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A valuation allowance for financing receivables that are expected to be uncollectible.

+ References

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Amount of expense related to estimated loss from loan and lease transactions.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
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-URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3602-108585

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-Name Accounting Standards Codification
-Topic 942
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-URI http://asc.fasb.org/extlink&oid=114873765&loc=SL114874048-224260

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 11B
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-URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953423-111524

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