Note 7 - Loans and Related Allowance for Loan Losses - Allowance for Loan Losses (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2017	Mar. 31, 2016
ALLL balance, period start	$ 6,598	$ 6,385
Charge-offs	(208)	(177)
Recoveries	165	44
Provision	165	105
ALLL balance, period end	6,720	6,357
Commercial And Industrial [Member]
ALLL balance, period start	448	867
Charge-offs	(20)	(120)
Recoveries	78	37
Provision	110	(201)
ALLL balance, period end	616	583
Real Estate Construction Porfolio Segment [Member]
ALLL balance, period start	172	276
Charge-offs
Recoveries	17
Provision	(3)	(29)
ALLL balance, period end	186	247
Real Estate Mortgage Portfolio Segment [Member] \| Residential Loan [Member]
ALLL balance, period start	2,818	3,139
Charge-offs	(68)	(42)
Recoveries	7	4
Provision	(234)	(385)
ALLL balance, period end	2,523	2,716
Real Estate Mortgage Portfolio Segment [Member] \| Commercial Loans [Member]
ALLL balance, period start	3,135	2,078
Charge-offs	(19)
Recoveries
Provision	262	705
ALLL balance, period end	3,378	2,783
Consumer Portfolio Segment [Member]
ALLL balance, period start	25	25
Charge-offs	(101)	(15)
Recoveries	63	3
Provision	30	15
ALLL balance, period end	$ 17	$ 28

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.

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Amount of allowance to cover probable credit losses on loans and leases. Includes carryover of or adjustments to the allowance for loan losses in connection with business combinations. Excludes allowance for loans and leases covered under loss sharing agreements.

+ References

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-Name Accounting Standards Codification
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-Publisher FASB
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Amount of expense related to estimated loss from loan and lease transactions.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 225
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