Note 4 - Loans/Leases Receivable (Details) - Additional Information on Impaired Loans (USD $)	Sep. 30, 2013	Dec. 31, 2012	Sep. 30, 2012
Impaired Loans/Leases with No Specific Allowance Recorded:
Impaired loans with no related allowance recorded investment	$ 7,621,951	$ 4,372,125
Impaired loans with no related allowance unpaid principal balance	8,029,162	5,320,511
Impaired Loans/Leases with Specific Allowance Recorded:
Impaired loans with related allowance recorded investment	15,671,237	19,922,086
Impaired loans with related allowance unpaid principal balance	16,783,587	20,197,297
Impaired loans related allowance	6,493,658	4,587,769	525,110
Total Impaired Loans/Leases:
Impaired loans recorded investment	23,293,188	24,294,211
Impaired loans unpaid principal balance	24,812,749	25,517,808
Impaired loans related allowance	6,493,658	4,587,769	525,110
Commercial and Industrial [Member]
Impaired Loans/Leases with No Specific Allowance Recorded:
Impaired loans with no related allowance recorded investment	701,450	438,355
Impaired loans with no related allowance unpaid principal balance	1,108,661	1,203,710
Impaired Loans/Leases with Specific Allowance Recorded:
Impaired loans with related allowance recorded investment	1,872,767	568,597
Impaired loans with related allowance unpaid principal balance	1,886,717	590,849
Impaired loans related allowance	1,112,008	280,170
Total Impaired Loans/Leases:
Impaired loans recorded investment	2,574,217	1,006,952
Impaired loans unpaid principal balance	2,995,378	1,794,559
Impaired loans related allowance	1,112,008	280,170
Owner-occupied commercial real estate [Member]
Impaired Loans/Leases with No Specific Allowance Recorded:
Impaired loans with no related allowance recorded investment	705,653	503,321
Impaired loans with no related allowance unpaid principal balance	705,653	503,321
Impaired Loans/Leases with Specific Allowance Recorded:
Impaired loans with related allowance recorded investment	1,325,513
Impaired loans with related allowance unpaid principal balance	2,170,954
Impaired loans related allowance	461,491
Total Impaired Loans/Leases:
Impaired loans recorded investment	2,031,166	503,321
Impaired loans unpaid principal balance	2,876,607	503,321
Impaired loans related allowance	461,491
Commercial construction, land development, and other land [Member]
Impaired Loans/Leases with No Specific Allowance Recorded:
Impaired loans with no related allowance recorded investment	1,760,962	678,523
Impaired loans with no related allowance unpaid principal balance	1,760,962	678,523
Impaired Loans/Leases with Specific Allowance Recorded:
Impaired loans with related allowance recorded investment	1,882,762	3,967,583
Impaired loans with related allowance unpaid principal balance	1,882,762	3,967,583
Impaired loans related allowance	1,842,784	1,105,795
Total Impaired Loans/Leases:
Impaired loans recorded investment	3,643,724	4,646,106
Impaired loans unpaid principal balance	3,643,724	4,646,106
Impaired loans related allowance	1,842,784	1,105,795
Other commercial real estate [Member]
Impaired Loans/Leases with No Specific Allowance Recorded:
Impaired loans with no related allowance recorded investment	1,584,704	495,702
Impaired loans with no related allowance unpaid principal balance	1,584,704	495,702
Impaired Loans/Leases with Specific Allowance Recorded:
Impaired loans with related allowance recorded investment	9,257,889	14,738,717
Impaired loans with related allowance unpaid principal balance	9,510,848	14,991,676
Impaired loans related allowance	2,683,575	2,899,247
Total Impaired Loans/Leases:
Impaired loans recorded investment	10,842,593	15,234,419
Impaired loans unpaid principal balance	11,095,552	15,487,378
Impaired loans related allowance	2,683,575	2,899,247
Leases receivable [Member]
Impaired Loans/Leases with No Specific Allowance Recorded:
Impaired loans with no related allowance recorded investment	460,298	777,645
Impaired loans with no related allowance unpaid principal balance	460,298	777,645
Impaired Loans/Leases with Specific Allowance Recorded:
Impaired loans with related allowance recorded investment	238,290	221,157
Impaired loans with related allowance unpaid principal balance	238,290	221,157
Impaired loans related allowance	134,533	125,000
Total Impaired Loans/Leases:
Impaired loans recorded investment	698,588	998,802
Impaired loans unpaid principal balance	698,588	998,802
Impaired loans related allowance	134,533	125,000
Residential Real Estate [Member]
Impaired Loans/Leases with No Specific Allowance Recorded:
Impaired loans with no related allowance recorded investment	1,404,241	944,211
Impaired loans with no related allowance unpaid principal balance	1,404,241	1,127,242
Impaired Loans/Leases with Specific Allowance Recorded:
Impaired loans with related allowance recorded investment	656,477	273,045
Impaired loans with related allowance unpaid principal balance	656,477	273,045
Impaired loans related allowance	206,700	105,565
Total Impaired Loans/Leases:
Impaired loans recorded investment	2,060,718	1,217,256
Impaired loans unpaid principal balance	2,060,718	1,400,287
Impaired loans related allowance	206,700	105,565
Installment and Other Consumer [Member]
Impaired Loans/Leases with No Specific Allowance Recorded:
Impaired loans with no related allowance recorded investment	1,004,643	534,368
Impaired loans with no related allowance unpaid principal balance	1,004,643	534,368
Impaired Loans/Leases with Specific Allowance Recorded:
Impaired loans with related allowance recorded investment	437,539	152,987
Impaired loans with related allowance unpaid principal balance	437,539	152,987
Impaired loans related allowance	52,567	71,992
Total Impaired Loans/Leases:
Impaired loans recorded investment	1,442,182	687,355
Impaired loans unpaid principal balance	1,442,182	687,355
Impaired loans related allowance	$ 52,567	$ 71,992