Note 4 - Loans/Leases Receivable (Details) - Nonperforming Loans/Leases (USD $)	Sep. 30, 2013		Dec. 31, 2012		Sep. 30, 2012
Note 4 - Loans/Leases Receivable (Details) - Nonperforming Loans/Leases [Line Items]
Nonaccrual loans/leases	$ 22,126,437		$ 17,932,495
Troubled debt restructurings - accruing			12,958,374		16,451,616
Total nonperforming loans/leases	23,293,188		24,294,211
Percentage of total nonperforming loans/leases	100.00%		100.00%
Commercial and Industrial [Member] | Nonperforming [Member]
Note 4 - Loans/Leases Receivable (Details) - Nonperforming Loans/Leases [Line Items]
Total nonperforming loans/leases	3,843,902		1,868,583
Commercial and Industrial [Member]
Note 4 - Loans/Leases Receivable (Details) - Nonperforming Loans/Leases [Line Items]
Accruing Past Due 90 Days or More			120,000
Nonaccrual loans/leases	2,957,737	[1]	1,564,499	[1]
Troubled debt restructurings - accruing	886,165		184,084
Percentage of total nonperforming loans/leases	15.42%		7.36%
Owner-occupied commercial real estate [Member] | Nonperforming [Member]
Note 4 - Loans/Leases Receivable (Details) - Nonperforming Loans/Leases [Line Items]
Total nonperforming loans/leases	2,141,325		627,245
Owner-occupied commercial real estate [Member]
Note 4 - Loans/Leases Receivable (Details) - Nonperforming Loans/Leases [Line Items]
Accruing Past Due 90 Days or More	0
Nonaccrual loans/leases	2,141,325	[1]	627,245	[2]
Troubled debt restructurings - accruing			0
Percentage of total nonperforming loans/leases	8.59%		2.47%
Commercial construction, land development, and other land [Member] | Nonperforming [Member]
Note 4 - Loans/Leases Receivable (Details) - Nonperforming Loans/Leases [Line Items]
Total nonperforming loans/leases	950,055		3,797,585
Commercial construction, land development, and other land [Member]
Note 4 - Loans/Leases Receivable (Details) - Nonperforming Loans/Leases [Line Items]
Accruing Past Due 90 Days or More	59,975		0
Nonaccrual loans/leases	590,080	[1]	2,781,562	[2]
Troubled debt restructurings - accruing	300,000		1,016,023
Percentage of total nonperforming loans/leases	3.81%		14.96%
Non-owner occupied Commercial Real Estate [Member] | Nonperforming [Member]
Note 4 - Loans/Leases Receivable (Details) - Nonperforming Loans/Leases [Line Items]
Total nonperforming loans/leases	13,788,891		16,082,941
Non-owner occupied Commercial Real Estate [Member]
Note 4 - Loans/Leases Receivable (Details) - Nonperforming Loans/Leases [Line Items]
Accruing Past Due 90 Days or More	0
Nonaccrual loans/leases	12,979,729	[1]	10,262,176	[2]
Troubled debt restructurings - accruing	809,162		5,820,765
Percentage of total nonperforming loans/leases	55.32%		63.34%
Finance Leases Portfolio Segment [Member] | Nonperforming [Member]
Note 4 - Loans/Leases Receivable (Details) - Nonperforming Loans/Leases [Line Items]
Total nonperforming loans/leases	698,588		998,802
Finance Leases Portfolio Segment [Member]
Note 4 - Loans/Leases Receivable (Details) - Nonperforming Loans/Leases [Line Items]
Accruing Past Due 90 Days or More	0		0
Nonaccrual loans/leases	698,588	[1]	998,802	[2]
Percentage of total nonperforming loans/leases	2.80%		3.93%
Residential Portfolio Segment [Member] | Nonperforming [Member]
Note 4 - Loans/Leases Receivable (Details) - Nonperforming Loans/Leases [Line Items]
Total nonperforming loans/leases	2,060,718		1,217,257
Residential Portfolio Segment [Member]
Note 4 - Loans/Leases Receivable (Details) - Nonperforming Loans/Leases [Line Items]
Accruing Past Due 90 Days or More	0
Nonaccrual loans/leases	1,686,796	[1]	1,049,518	[2]
Troubled debt restructurings - accruing	373,922		167,739
Percentage of total nonperforming loans/leases	8.27%		4.79%
Consumer Portfolio Segment [Member] | Nonperforming [Member]
Note 4 - Loans/Leases Receivable (Details) - Nonperforming Loans/Leases [Line Items]
Total nonperforming loans/leases	1,443,121		799,156
Consumer Portfolio Segment [Member]
Note 4 - Loans/Leases Receivable (Details) - Nonperforming Loans/Leases [Line Items]
Accruing Past Due 90 Days or More	939		39,481
Nonaccrual loans/leases	1,072,182	[1]	648,693	[2]
Troubled debt restructurings - accruing	370,000		110,982
Percentage of total nonperforming loans/leases	5.79%		3.15%
Total [Member] | Nonperforming [Member]
Note 4 - Loans/Leases Receivable (Details) - Nonperforming Loans/Leases [Line Items]
Total nonperforming loans/leases	24,926,600		25,391,569
Total [Member]
Note 4 - Loans/Leases Receivable (Details) - Nonperforming Loans/Leases [Line Items]
Accruing Past Due 90 Days or More	60,914		159,481
Nonaccrual loans/leases	22,126,437	[1]	17,932,495	[2]
Troubled debt restructurings - accruing	$ 2,739,249		$ 7,299,593
Percentage of total nonperforming loans/leases	100.00%		100.00%

[1] Nonaccrual loans/leases includes $13,712,367 of troubled debt restructurings, including $130,655 in commercial and industrial loans, $12,935,422 in commercial real estate loans, $374,102 in residential real estate loans, and $272,188 in installment loans.

[2] Nonaccrual loans/leases includes $5,658,781 of troubled debt restructurings, including $99,804 in commercial and industrial loans, $5,173,589 in commercial real estate loans, $64,722 in residential real estate loans, and $320,666 in installment loans.