Note 4 - Allowance for Loan Losses, Nonperforming Assets and Impaired Loans (Details) - Allowance Roll-forward and Related Loan Balance by Portfolio Segments (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance	$ 8,297	$ 8,291	$ 8,227	$ 8,349
Charge-offs	(1,053)	(730)	(1,244)	(1,484)
Recoveries	26	36	184	61
Provision for loan losses	701	355	804	1,026
Balance	7,971	7,952	7,971	7,952
Real Estate Construction [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance	850	1,173	863	1,070
Charge-offs			(2)	(184)
Provision for loan losses	(187)	(141)	(198)	146
Balance	663	1,032	663	1,032
Consumer Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance	1,814	1,846	1,697	2,263
Charge-offs	(16)	(46)	(70)	(99)
Recoveries		1		1
Provision for loan losses	(244)	(131)	(73)	(495)
Balance	1,554	1,670	1,554	1,670
Commercial Real Estate Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance	3,694	3,289	3,685	3,442
Charge-offs	(891)		(943)	(35)
Recoveries	17	4	25	4
Provision for loan losses	970	(264)	1,023	(382)
Balance	3,790	3,029	3,790	3,029
Commercial Non Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance	861	1,276	989	959
Charge-offs	(79)	(556)	(79)	(960)
Recoveries			131	16
Provision for loan losses	274	761	15	1,466
Balance	1,056	1,481	1,056	1,481
Public Sector And IDA [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance	202	110	132	142
Provision for loan losses	76	1	146	(31)
Balance	278	111	278	111
Consumer Non Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance	529	585	576	424
Charge-offs	(67)	(128)	(150)	(206)
Recoveries	9	31	28	40
Provision for loan losses	81	25	98	255
Balance	552	513	552	513
Unallocated [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance	347	12	285	49
Provision for loan losses	(269)	104	(207)	67
Balance	$ 78	$ 116	$ 78	$ 116