Note 3 - Loans/Leases Receivable (Detail) - Nonperforming Loans/Leases (USD $)	Jun. 30, 2012	Dec. 31, 2011
Nonaccrual loans/leases	$ 16,246,760	$ 18,994,839
Troubled debt restructurings - accruing	16,020,355	20,526,457
Total nonperforming loans/leases	25,161,521	29,859,163
Percentage of total nonperforming loans/leases	100.00%	100.00%
Nonperforming [Member] | Commercial and Industrial [Member]
Total nonperforming loans/leases	2,764,714	3,097,617
Nonperforming [Member] | Owner-occupied commercial real estate [Member]
Total nonperforming loans/leases	687,218	1,011,456
Nonperforming [Member] | Commercial construction, land development, and other land [Member]
Total nonperforming loans/leases	3,124,884	10,020,374
Nonperforming [Member] | Non-owner occupied Commercial Real Estate [Member]
Total nonperforming loans/leases	17,756,700	14,342,900
Nonperforming [Member] | Finance Leases Portfolio Segment [Member]
Total nonperforming loans/leases	687,508	1,306,663
Nonperforming [Member] | Residential Portfolio Segment [Member]
Total nonperforming loans/leases	1,191,136	1,133,475
Nonperforming [Member] | Consumer Portfolio Segment [Member]
Total nonperforming loans/leases	1,083,894	1,097,016
Nonperforming [Member] | Total [Member]
Total nonperforming loans/leases	27,296,054	32,009,501
Commercial and Industrial [Member]
Accruing Past Due 90 Days or More	965,673	120,000
Nonaccrual loans/leases	1,613,450	2,790,210
Troubled debt restructurings - accruing	185,591	187,407
Percentage of total nonperforming loans/leases	10.13%	9.68%
Owner-occupied commercial real estate [Member]
Accruing Past Due 90 Days or More	0	0
Nonaccrual loans/leases	687,218	1,011,456
Troubled debt restructurings - accruing	0	0
Percentage of total nonperforming loans/leases	2.52%	3.16%
Commercial construction, land development, and other land [Member]
Accruing Past Due 90 Days or More	0	968,919
Nonaccrual loans/leases	2,787,384	2,975,312
Troubled debt restructurings - accruing	337,500	6,076,143
Percentage of total nonperforming loans/leases	11.45%	31.30%
Non-owner occupied Commercial Real Estate [Member]
Accruing Past Due 90 Days or More	137,611	0
Nonaccrual loans/leases	8,452,069	9,293,105
Troubled debt restructurings - accruing	9,167,020	5,049,795
Percentage of total nonperforming loans/leases	65.05%	44.81%
Finance Leases Portfolio Segment [Member]
Accruing Past Due 90 Days or More	0	0
Nonaccrual loans/leases	687,508	716,425
Troubled debt restructurings - accruing	0	590,238
Percentage of total nonperforming loans/leases	2.52%	4.08%
Residential Portfolio Segment [Member]
Accruing Past Due 90 Days or More	0	0
Nonaccrual loans/leases	1,023,397	1,133,475
Troubled debt restructurings - accruing	167,739	0
Percentage of total nonperforming loans/leases	4.36%	3.54%
Consumer Portfolio Segment [Member]
Accruing Past Due 90 Days or More	48,607	22,160
Nonaccrual loans/leases	995,734	1,074,856
Troubled debt restructurings - accruing	39,553	0
Percentage of total nonperforming loans/leases	3.97%	3.43%
Total [Member]
Accruing Past Due 90 Days or More	1,151,891	1,111,079
Nonaccrual loans/leases	16,246,760	18,994,839
Troubled debt restructurings - accruing	$ 9,897,403	$ 11,903,583
Percentage of total nonperforming loans/leases	100.00%	100.00%