Note 4 - Loans and Related Allowance for Loan Loss (Details) - Activity in the Allowance for Loan Losses (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 as of	$ 5,372	$ 5,446	$ 5,382	$ 5,904
Individually Evaluated for Impairment	942	705	942	705
Collectively Evaluted for Potential Losses	4,398	4,728	4,398	4,728
Total Allowance for Loan Losses			5,340	5,433
Charge-offs	(40)	(158)	(76)	(763)
Recoveries	8	145	34	192
Provision				100
Balance as of	5,340	5,433	5,340	5,433
Residential Mortgage [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance as of	1,481	1,272	1,481	2,215
Collectively Evaluted for Potential Losses	1,478	1,299	1,478	1,299
Total Allowance for Loan Losses			1,478	1,299
Charge-offs	(10)	(38)	(10)	(181)
Recoveries		86	1	86
Provision	7	(21)	6	(821)
Balance as of	1,478	1,299	1,478	1,299
Commercial Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance as of	1,703	2,154	1,703	2,051
Individually Evaluated for Impairment	493	376	493	376
Collectively Evaluted for Potential Losses	1,219	1,640	1,219	1,640
Total Allowance for Loan Losses			1,712	2,016
Charge-offs				(436)
Recoveries		14		14
Provision	9	(152)	9	387
Balance as of	1,712	2,016	1,712	2,016
Construction Loan [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance as of	355	304	355	326
Individually Evaluated for Impairment	201	211	201	211
Collectively Evaluted for Potential Losses	92	95	92	95
Total Allowance for Loan Losses			293	306
Provision	(62)	2	(62)	(20)
Balance as of	293	306	293	306
Commercial Loan [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance as of	1,014	866	1,013	1,043
Individually Evaluated for Impairment	248	118	248	118
Collectively Evaluted for Potential Losses	779	930	779	930
Total Allowance for Loan Losses			1,027	1,048
Charge-offs		(106)		(106)
Recoveries	1	21	2	35
Provision	12	267	12	76
Balance as of	1,027	1,048	1,027	1,048
Consumer Loan [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance as of	580	361	592	320
Collectively Evaluted for Potential Losses	571	413	571	413
Total Allowance for Loan Losses			571	413
Charge-offs	(30)	(14)	(66)	(40)
Recoveries	7	24	31	57
Provision	14	42	14	76
Balance as of	571	413	571	413
Unallocated [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance as of	239	489	238	(51)
Collectively Evaluted for Potential Losses	259	351	259	351
Total Allowance for Loan Losses			259	351
Provision	20	(138)	21	402
Balance as of	$ 259	$ 351	$ 259	$ 351