Note 4 - Loans and Allowance for Loan Losses (Details) - Aging of the Recorded Investment of Past Due Loans (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total	$ 556,213	$ 558,288
Residential Real Estate Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	3,891	5,525
60-89 Days Past Due	1,861	1,033
90 or More Days Past Due	2,870	2,797
Total Past Due	8,622	9,355
Loans Not Past Due	207,379	216,667
Total	216,001	226,022
Commercial Real Estate Owner Occupied [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	722	753
60-89 Days Past Due	212	111
90 or More Days Past Due	841	675
Total Past Due	1,775	1,539
Loans Not Past Due	96,154	103,303
Total	97,929	104,842
Commercial Real Estate Nonowner Occupied [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	0	0
60-89 Days Past Due	0	0
90 or More Days Past Due	52	352
Total Past Due	52	352
Loans Not Past Due	55,443	52,440
Total	55,495	52,792
Construction [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	0	0
60-89 Days Past Due	0	0
90 or More Days Past Due	0	0
Total Past Due	0	0
Loans Not Past Due	24,169	17,376
Total	24,169	17,376
Commercial and Industrial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	303	202
60-89 Days Past Due	0	0
90 or More Days Past Due	20	0
Total Past Due	323	202
Loans Not Past Due	61,199	57,037
Total	61,522	57,239
Automobile Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	523	905
60-89 Days Past Due	163	138
90 or More Days Past Due	9	13
Total Past Due	695	1,056
Loans Not Past Due	39,599	40,112
Total	40,294	41,168
Home Equity Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	192	112
60-89 Days Past Due	59	37
90 or More Days Past Due	38	62
Total Past Due	289	211
Loans Not Past Due	17,447	18,121
Total	17,736	18,332
Other Consumer Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	533	1,066
60-89 Days Past Due	187	162
90 or More Days Past Due	1	7
Total Past Due	721	1,235
Loans Not Past Due	42,346	39,282
Total	43,067	40,517
Past Due Loans (Member)
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	6,164	8,563
60-89 Days Past Due	2,482	1,481
90 or More Days Past Due	3,831	3,906
Total Past Due	12,477	13,950
Loans Not Past Due	543,736	544,338
Total	$ 556,213	$ 558,288