Note 4 - Loans/Leases Receivable (Details) - Nonperforming Loans/Leases (USD $)	Jun. 30, 2013		Dec. 31, 2012		Jun. 30, 2012
Note 4 - Loans/Leases Receivable (Details) - Nonperforming Loans/Leases [Line Items]
Nonaccrual loans/leases	$ 27,782,205		$ 17,932,495
Troubled debt restructurings - accruing			12,958,374		9,918,012
Total nonperforming loans/leases	25,494,427		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	4,267,713		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	3,373,838	[1]	1,564,499	[1]
Troubled debt restructurings - accruing	893,875		184,084
Percentage of total nonperforming loans/leases	14.24%		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	7,638,507		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	7,590,549	[1]	627,245	[2]
Troubled debt restructurings - accruing	47,958		0
Percentage of total nonperforming loans/leases	25.49%		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	1,432,976		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			0
Nonaccrual loans/leases	1,132,976	[1]	2,781,562	[2]
Troubled debt restructurings - accruing	300,000		1,016,023
Percentage of total nonperforming loans/leases	4.78%		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	12,906,634		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	12,637,307	[1]	10,262,176	[2]
Troubled debt restructurings - accruing	269,327		5,820,765
Percentage of total nonperforming loans/leases	43.08%		63.34%
Finance Leases Portfolio Segment [Member] | Nonperforming [Member]
Note 4 - Loans/Leases Receivable (Details) - Nonperforming Loans/Leases [Line Items]
Total nonperforming loans/leases	700,574		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	700,574	[1]	998,802	[2]
Percentage of total nonperforming loans/leases	2.34%		3.93%
Residential Portfolio Segment [Member] | Nonperforming [Member]
Note 4 - Loans/Leases Receivable (Details) - Nonperforming Loans/Leases [Line Items]
Total nonperforming loans/leases	1,572,520		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	1,276,084	[1]	1,049,518	[2]
Troubled debt restructurings - accruing	296,436		167,739
Percentage of total nonperforming loans/leases	5.25%		4.79%
Consumer Portfolio Segment [Member] | Nonperforming [Member]
Note 4 - Loans/Leases Receivable (Details) - Nonperforming Loans/Leases [Line Items]
Total nonperforming loans/leases	1,444,125		799,156
Consumer Portfolio Segment [Member]
Note 4 - Loans/Leases Receivable (Details) - Nonperforming Loans/Leases [Line Items]
Accruing Past Due 90 Days or More	3,248		39,481
Nonaccrual loans/leases	1,070,877	[1]	648,693	[2]
Troubled debt restructurings - accruing	370,000		110,982
Percentage of total nonperforming loans/leases	4.82%		3.15%
Total [Member] | Nonperforming [Member]
Note 4 - Loans/Leases Receivable (Details) - Nonperforming Loans/Leases [Line Items]
Total nonperforming loans/leases	29,963,049		25,391,569
Total [Member]
Note 4 - Loans/Leases Receivable (Details) - Nonperforming Loans/Leases [Line Items]
Accruing Past Due 90 Days or More	3,248		159,481
Nonaccrual loans/leases	27,782,205	[1]	17,932,495	[2]
Troubled debt restructurings - accruing	$ 2,177,596		$ 7,299,593
Percentage of total nonperforming loans/leases	100.00%		100.00%

[1] Nonaccrual loans/leases includes $7,740,416 of troubled debt restructurings, including $145,914 in commercial and industrial loans, $6,934,208 in commercial real estate loans, $379,769 in residential real estate loans, and $280,525 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.