Note 8 - Loans and Allowance for Loan Losses (Details) - Allowance for Loan Losses - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Commercial:
Allowance for loan losses, beginning of period	$ 7,655	$ 8,900	$ 8,001	$ 8,925
Provision for (credit to) loan losses	0	0	60	0
Charge-offs	(21)	(578)	(502)	(794)
Recoveries	35	44	110	235
Allowance for loan losses, end of period	7,669	8,366	7,669	8,366
Commercial Portfolio Segment [Member] \| Commercial and Industrial Loans [Member]
Commercial:
Allowance for loan losses, beginning of period	1,603	2,407	1,892	2,044
Provision for (credit to) loan losses	(79)	(139)	(357)	190
Charge-offs	0	0	(30)	(17)
Recoveries	11	8	30	59
Allowance for loan losses, end of period	1,535	2,276	1,535	2,276
Commercial Portfolio Segment [Member] \| Construction Loans [Member]
Commercial:
Allowance for loan losses, beginning of period	149	240	297	439
Provision for (credit to) loan losses	118	(67)	(30)	(266)
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Allowance for loan losses, end of period	267	173	267	173
Commercial Portfolio Segment [Member] \| Secured by Commercial Real Estate [Member]
Commercial:
Allowance for loan losses, beginning of period	2,655	2,600	2,700	2,898
Provision for (credit to) loan losses	(494)	(129)	(458)	(427)
Charge-offs	0	0	(85)	0
Recoveries	3	1	7	1
Allowance for loan losses, end of period	2,164	2,472	2,164	2,472
Commercial Portfolio Segment [Member] \| Secured by Residential Real Estate [Member]
Commercial:
Allowance for loan losses, beginning of period	1,635	1,708	1,630	1,632
Provision for (credit to) loan losses	(53)	555	251	623
Charge-offs	(4)	(452)	(321)	(453)
Recoveries	2	13	20	22
Allowance for loan losses, end of period	1,580	1,824	1,580	1,824
State and Political Subdivisions Portfolio Segment [Member]
Commercial:
Allowance for loan losses, beginning of period	232	214	221	186
Provision for (credit to) loan losses	(4)	(20)	7	8
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Allowance for loan losses, end of period	228	194	228	194
Finance Leases Portfolio Segment [Member]
Commercial:
Allowance for loan losses, beginning of period	121	92	93	103
Provision for (credit to) loan losses	(4)	(6)	22	(20)
Charge-offs	0	(14)	(8)	(20)
Recoveries	5	4	15	13
Allowance for loan losses, end of period	122	76	122	76
Retail Portfolio Segment [Member] \| 1-4 Family Residential Mortgages [Member]
Commercial:
Allowance for loan losses, beginning of period	313	372	312	303
Provision for (credit to) loan losses	(7)	39	(6)	108
Charge-offs	0	(92)	0	(92)
Recoveries	0	1	0	1
Allowance for loan losses, end of period	306	320	306	320
Retail Portfolio Segment [Member] \| Home Equity Loan [Member]
Commercial:
Allowance for loan losses, beginning of period	474	520	453	583
Provision for (credit to) loan losses	(28)	25	(19)	(15)
Charge-offs	0	(3)	0	(124)
Recoveries	4	5	16	103
Allowance for loan losses, end of period	450	547	450	547
Retail Portfolio Segment [Member] \| Consumer Loans [Member]
Commercial:
Allowance for loan losses, beginning of period	71	67	85	64
Provision for (credit to) loan losses	18	59	33	109
Charge-offs	(17)	(17)	(58)	(88)
Recoveries	10	12	22	36
Allowance for loan losses, end of period	82	121	82	121
Unallocated Financing Receivables [Member]
Commercial:
Allowance for loan losses, beginning of period	402	679	318	669
Provision for (credit to) loan losses	533	(316)	617	(306)
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Allowance for loan losses, end of period	$ 935	363	$ 935	363
Loans to Depository Institutions Portfolio Segment [Member]
Commercial:
Allowance for loan losses, beginning of period		1		4
Provision for (credit to) loan losses		(1)		(4)
Charge-offs		0		0
Recoveries		0		0
Allowance for loan losses, end of period		$ 0		$ 0

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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-Number Topic 6

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

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