Note 8 - Loans and Allowance for Loan Losses (Details) - Allowance for Loan Losses (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Commercial:
Balance, Beginning of Period	$ 8,925	$ 9,772
Charge-offs	(154)	(451)
Recoveries	48	30
Balance, End of Period	8,819	9,351
Commercial:Commercial and Industrial [Member]
Commercial:
Balance, Beginning of Period	2,044	2,505
Provision for (Credit to) Loan Losses	274	(198)
Charge-offs	(17)
Recoveries	7	7
Balance, End of Period	2,308	2,314
Commercial:Construction [Member]
Commercial:
Balance, Beginning of Period	439	209
Provision for (Credit to) Loan Losses	(48)	21
Balance, End of Period	391	230
Commercial:Secured by Commercial Real Estate [Member]
Commercial:
Balance, Beginning of Period	2,898	3,795
Provision for (Credit to) Loan Losses	(141)	78
Balance, End of Period	2,757	3,873
Commercial Secured By Residential Real Estate [Member]
Commercial:
Balance, Beginning of Period	1,632	1,230
Provision for (Credit to) Loan Losses	(170)	252
Charge-offs	(1)	(336)
Recoveries	4
Balance, End of Period	1,465	1,146
State And Political Subdivisions [Member]
Commercial:
Balance, Beginning of Period	186	260
Provision for (Credit to) Loan Losses	107	(3)
Balance, End of Period	293	257
Loans To Depository Institutions [Member]
Commercial:
Balance, Beginning of Period	4	15
Provision for (Credit to) Loan Losses	(1)	(5)
Balance, End of Period	3	10
Indirect Lease Financing [Member]
Commercial:
Balance, Beginning of Period	103	168
Provision for (Credit to) Loan Losses	5	2
Charge-offs	(6)	(1)
Recoveries	4	10
Balance, End of Period	106	179
Retail:1-4 Family Residential Mortgages [Member]
Commercial:
Balance, Beginning of Period	303	324
Provision for (Credit to) Loan Losses	11	(24)
Balance, End of Period	314	300
Retail Home Equity Loans And Lines [Member]
Commercial:
Balance, Beginning of Period	583	582
Provision for (Credit to) Loan Losses	87	224
Charge-offs	(87)	(93)
Recoveries	19	1
Balance, End of Period	602	714
Retail:Consumer [Member]
Commercial:
Balance, Beginning of Period	64	27
Provision for (Credit to) Loan Losses	28	11
Charge-offs	(43)	(21)
Recoveries	14	12
Balance, End of Period	63	29
Unallocated Financing Receivables [Member]
Commercial:
Balance, Beginning of Period	669	657
Provision for (Credit to) Loan Losses	(152)	(358)
Balance, End of Period	$ 517	$ 299