Note 4 - Loans - Activity in the Allowance for Loan Losses, by Loan Category (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2019	Mar. 31, 2018	Mar. 31, 2019	Dec. 31, 2018
Balance	$ 9,519	$ 9,034
Charge-offs	(454)	(400)
Recoveries	342	208
(Credit) provision for loan and lease losses	(154)	720
Balance	9,253	9,562
Individually evaluated for impairment			$ 906	$ 657
Collectively evaluated for impairment			8,347	8,862
Total	9,519	9,034	9,253	9,519
Individually evaluated for impairment			13,472	12,417
Financing Receivable, Collectively Evaluated for Impairment			821,895	822,790
Total			835,367	835,207
Residential Portfolio Segment [Member]
Total			161,938	164,833
Residential Portfolio Segment [Member] \| Real Estate Loan [Member]
Balance	1,175	1,236
Charge-offs		(63)
Recoveries	4	6
(Credit) provision for loan and lease losses	(24)	70
Balance	1,155	1,249
Individually evaluated for impairment			13	14
Collectively evaluated for impairment			1,142	1,161
Total	1,175	1,236	1,155	1,175
Individually evaluated for impairment			1,834	1,847
Financing Receivable, Collectively Evaluated for Impairment			160,104	162,986
Total			161,938	164,833
Commercial Real Estate Portfolio Segment [Member]
Total			266,617	262,778
Commercial Real Estate Portfolio Segment [Member] \| Real Estate Loan [Member]
Balance	3,107	3,499
Charge-offs
Recoveries		1
(Credit) provision for loan and lease losses	(56)	(158)
Balance	3,051	3,342
Individually evaluated for impairment			40	41
Collectively evaluated for impairment			3,011	3,066
Total	3,107	3,499	3,051	3,107
Individually evaluated for impairment			9,631	9,408
Financing Receivable, Collectively Evaluated for Impairment			256,986	253,370
Total			266,617	262,778
Construction, Land Acquisition and Development [Member]
Total			22,388	20,813
Construction, Land Acquisition and Development [Member] \| Real Estate Loan [Member]
Balance	188	209
Charge-offs	0
Recoveries	81	30
(Credit) provision for loan and lease losses	(163)	17
Balance	106	256
Individually evaluated for impairment
Collectively evaluated for impairment			106	188
Total	188	209	106	188
Individually evaluated for impairment			81	82
Financing Receivable, Collectively Evaluated for Impairment			22,307	20,731
Total			22,388	20,813
Commercial and Industrial [Member]
Balance	2,552	2,340
Charge-offs	(139)	(77)
Recoveries	84	72
(Credit) provision for loan and lease losses	2	170
Balance	2,499	2,505
Individually evaluated for impairment			851	600
Collectively evaluated for impairment			1,648	1,952
Total	2,552	2,340	2,499	2,552
Individually evaluated for impairment			1,546	697
Financing Receivable, Collectively Evaluated for Impairment			154,975	150,265
Total			156,521	150,962
Consumer Portfolio Segment [Member]
Balance	2,051	1,395
Charge-offs	(315)	(260)
Recoveries	173	99
(Credit) provision for loan and lease losses	54	588
Balance	1,963	1,822
Individually evaluated for impairment			2	2
Collectively evaluated for impairment			1,961	2,049
Total	2,051	1,395	1,963	2,051
Individually evaluated for impairment			380	383
Financing Receivable, Collectively Evaluated for Impairment			167,739	176,401
Total			168,119	176,784
State and Political Subdivisions [Member]
Balance	417	355
Charge-offs	0
Recoveries	0
(Credit) provision for loan and lease losses	6	33
Balance	423	388
Individually evaluated for impairment			0
Collectively evaluated for impairment			423	417
Total	417	355	423	417
Individually evaluated for impairment
Financing Receivable, Collectively Evaluated for Impairment			59,784	59,037
Total			59,784	59,037
Unallocated Financing Receivables [Member]
Balance	29
Charge-offs	0
Recoveries	0
(Credit) provision for loan and lease losses	27
Balance	56
Individually evaluated for impairment			0
Collectively evaluated for impairment			56	29
Total	$ 29		56	29
Individually evaluated for impairment
Financing Receivable, Collectively Evaluated for Impairment
Total

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 before allowance of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements.

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

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