Note 5 - Credit Quality and the Allowance for Loan and Lease Losses (Details) - Aging Analysis of the Loan Portfolio (USD $)	Jun. 30, 2013	Dec. 31, 2012	Jun. 30, 2012
Recorded Balance of Loans Past Due:
Total Loans	$ 247,954,000	$ 243,741,000	$ 219,351,000
Accruing Troubled Debt Restructurings			743,000
Construction and Land Development Loans [Member]
Recorded Balance of Loans Past Due:
60-89 Days			219,000
Total Past Due			219,000
Loans in Current Payment Status	11,541,000	11,995,000	15,322,000
Total Loans	11,541,000	11,995,000	15,541,000
Loans 90+ Days Past Due and Accruing1	0	0
Accruing Troubled Debt Restructurings	0	0
Loans in Non-accrual Status	741,000	555,000	963,000
Commercial Real Estate Owner Occupied [Member]
Recorded Balance of Loans Past Due:
30-59 Days	339,000	55,000	858,000
60-89 Days	872,000	916,000	961,000
90+ Days	746,000	820,000	581,000
Total Past Due	1,957,000	1,791,000	2,400,000
Loans in Current Payment Status	66,941,000	69,237,000	64,788,000
Total Loans	68,898,000	71,028,000	67,188,000
Loans 90+ Days Past Due and Accruing1	0	0
Accruing Troubled Debt Restructurings	8,000	13,000
Loans in Non-accrual Status	3,536,000	3,779,000	2,053,000
Commercial Real Estate Non Owner Occupied [Member]
Recorded Balance of Loans Past Due:
Loans in Current Payment Status	75,015,000	69,361,000	64,504,000
Total Loans	75,015,000	69,361,000	64,504,000
Loans 90+ Days Past Due and Accruing1	0	0
Accruing Troubled Debt Restructurings	0	0
Loans in Non-accrual Status	807,000	845,000	104,000
Residential Real Estate Loans [Member]
Recorded Balance of Loans Past Due:
30-59 Days	488,000	325,000	185,000
90+ Days	76,000	343,000
Total Past Due	564,000	668,000	185,000
Loans in Current Payment Status	27,918,000	30,373,000	33,056,000
Total Loans	28,482,000	31,041,000	33,241,000
Loans 90+ Days Past Due and Accruing1	0	0
Accruing Troubled Debt Restructurings	704,000	709,000
Loans in Non-accrual Status	874,000	842,000	1,117,000
All Other Real Estate Loans [Member]
Recorded Balance of Loans Past Due:
Loans in Current Payment Status	17,541,000	8,348,000	1,880,000
Total Loans	17,541,000	8,348,000	1,880,000
Loans 90+ Days Past Due and Accruing1	0	0
Accruing Troubled Debt Restructurings	0	0
Loans in Non-accrual Status	22,000	29,000
Commercial and Industrial Loans [Member]
Recorded Balance of Loans Past Due:
30-59 Days	53,000	620,000	1,497,000
60-89 Days	308,000	44,000	81,000
90+ Days	393,000	227,000	97,000
Total Past Due	754,000	891,000	1,675,000
Loans in Current Payment Status	40,007,000	48,463,000	32,234,000
Total Loans	40,761,000	49,354,000	33,909,000
Loans 90+ Days Past Due and Accruing1		0
Accruing Troubled Debt Restructurings		0
Loans in Non-accrual Status	2,909,000	3,018,000	1,452,000
Consumer and All Other Loans and Lease Financing [Member]
Recorded Balance of Loans Past Due:
30-59 Days		69,000	8,000
Total Past Due		69,000	8,000
Loans in Current Payment Status	5,716,000	2,545,000	3,080,000
Total Loans	5,716,000	2,614,000	3,088,000
Loans 90+ Days Past Due and Accruing1		0
Accruing Troubled Debt Restructurings	0	0
Total [Member]
Recorded Balance of Loans Past Due:
30-59 Days	880,000	1,069,000	2,548,000
60-89 Days	1,180,000	960,000	1,261,000
90+ Days	1,215,000	1,390,000	678,000
Total Past Due	3,275,000	3,419,000	4,487,000
Loans in Current Payment Status	244,679,000	240,322,000	214,864,000
Total Loans	247,954,000	243,741,000	219,351,000
Loans 90+ Days Past Due and Accruing1		0
Accruing Troubled Debt Restructurings	712,000	722,000
Loans in Non-accrual Status	$ 8,889,000	$ 9,068,000	$ 5,689,000