Note 3 - Loans/Leases Receivable (Detail) - Troubed Debt Restructurings (USD $)	Sep. 30, 2012	Dec. 31, 2011	Sep. 30, 2012 Troubled Debt Restructurings [Member] Extension of Maturity [Member] Non-owner occupied Commercial Real Estate [Member] Three month period [Member]	Sep. 30, 2012 Troubled Debt Restructurings [Member] Extension of Maturity [Member] Non-owner occupied Commercial Real Estate [Member] Nine Month Period [Member]	Sep. 30, 2012 Troubled Debt Restructurings [Member] Extension of Maturity [Member] Three month period [Member]	Sep. 30, 2012 Troubled Debt Restructurings [Member] Extension of Maturity [Member] Nine Month Period [Member]	Sep. 30, 2012 Troubled Debt Restructurings [Member] Interest Rate Adjusted Below Market [Member] Non-owner occupied Commercial Real Estate [Member] Three month period [Member]	Sep. 30, 2012 Troubled Debt Restructurings [Member] Interest Rate Adjusted Below Market [Member] Non-owner occupied Commercial Real Estate [Member] Nine Month Period [Member]	Sep. 30, 2012 Troubled Debt Restructurings [Member] Interest Rate Adjusted Below Market [Member] Three month period [Member]	Sep. 30, 2012 Troubled Debt Restructurings [Member] Interest Rate Adjusted Below Market [Member] Nine Month Period [Member]	Sep. 30, 2012 Troubled Debt Restructurings [Member]	Sep. 30, 2012 Troubled Debt Restructurings [Member]	Sep. 30, 2011 Significant Payment Delay [Member] Commercial and Industrial [Member] Nine Month Period [Member]	Sep. 30, 2012 Significant Payment Delay [Member] Commercial construction, land development, and other land [Member] Nine Month Period [Member]	Sep. 30, 2012 Significant Payment Delay [Member] Nine Month Period [Member]	Sep. 30, 2011 Significant Payment Delay [Member] Nine Month Period [Member]	Sep. 30, 2012 Extension of Maturity [Member] Non-owner occupied Commercial Real Estate [Member] Three month period [Member]	Sep. 30, 2012 Extension of Maturity [Member] Non-owner occupied Commercial Real Estate [Member] Nine Month Period [Member]	Sep. 30, 2011 Extension of Maturity [Member] Non-owner occupied Commercial Real Estate [Member] Nine Month Period [Member]	Sep. 30, 2012 Extension of Maturity [Member] Three month period [Member]	Sep. 30, 2012 Extension of Maturity [Member] Nine Month Period [Member]	Sep. 30, 2011 Extension of Maturity [Member] Nine Month Period [Member]	Sep. 30, 2012 Interest Rate Adjusted Below Market [Member] Non-owner occupied Commercial Real Estate [Member] Three month period [Member]	Sep. 30, 2012 Interest Rate Adjusted Below Market [Member] Non-owner occupied Commercial Real Estate [Member] Nine Month Period [Member]	Sep. 30, 2012 Interest Rate Adjusted Below Market [Member] Commercial construction, land development, and other land [Member] Nine Month Period [Member]	Sep. 30, 2012 Interest Rate Adjusted Below Market [Member] Residential Real Estate [Member] Nine Month Period [Member]	Sep. 30, 2012 Interest Rate Adjusted Below Market [Member] Installment and Other Consumer [Member] Nine Month Period [Member]	Sep. 30, 2012 Interest Rate Adjusted Below Market [Member] Three month period [Member]	Sep. 30, 2012 Interest Rate Adjusted Below Market [Member] Nine Month Period [Member]	Sep. 30, 2012 Non-owner occupied Commercial Real Estate [Member]	Dec. 31, 2011 Non-owner occupied Commercial Real Estate [Member]	Sep. 30, 2012 Commercial and Industrial [Member]	Dec. 31, 2011 Commercial and Industrial [Member]	Sep. 30, 2012 Commercial construction, land development, and other land [Member]	Dec. 31, 2011 Commercial construction, land development, and other land [Member]	Sep. 30, 2012 Residential Real Estate [Member]	Dec. 31, 2011 Residential Real Estate [Member]	Sep. 30, 2012 Installment and Other Consumer [Member]	Dec. 31, 2011 Installment and Other Consumer [Member]	Sep. 30, 2012 Troubled Debt Restructurings [Member]	Sep. 30, 2011 Troubled Debt Restructurings [Member]
Troubled Debt Restructurings Number of Loans/Leases	6												4	2	2	4	4	4	1	4	4	1	2	2	1	1	1	2	5											11	5
Troubled Debt Restructurings Pre-Modification Recorded Investment	$ 2,727,073												$ 1,175,819	$ 200,000	$ 200,000	$ 1,175,819	$ 1,184,289	$ 1,184,289	$ 2,851,134	$ 1,184,289	$ 1,184,289	$ 2,851,134	$ 1,542,784	$ 1,542,784	$ 337,500	$ 167,739	$ 16,043	$ 1,542,784	$ 2,064,066											$ 3,448,355	$ 4,026,953
Troubled Debt Restructurings Post-Modification Recorded Investment	2,474,114												1,175,819	200,000	200,000	1,175,819	1,184,289	1,184,289	2,851,134	1,184,289	1,184,289	2,851,134	1,289,825	1,289,825	337,500	167,739	16,043	1,289,825	1,811,107											3,195,396	4,026,953
Troubled Debt Restructurings Specific Allowance	$ 4,152,560	$ 5,346,303	$ 325,923	$ 325,923	$ 325,923	$ 325,923	$ 55,187	$ 55,187	$ 55,187	$ 55,187	$ 381,110	$ 381,110																		$ 2,108,785	$ 1,247,377	$ 274,666	$ 903,187	$ 1,373,340	$ 3,002,450	$ 169,196	$ 55,884	$ 68,673	$ 22,819