Note 3 - Loans/Leases Receivable (Detail) - Troubed Debt Restructurings (USD $)	Jun. 30, 2012	Dec. 31, 2011	Jun. 30, 2011 Significant Payment Delay [Member] Commercial and Industrial [Member] Six Month Period [Member]	Jun. 30, 2012 Significant Payment Delay [Member] Commercial construction, land development, and other land [Member] Six Month Period [Member]	Jun. 30, 2012 Significant Payment Delay [Member] Six Month Period [Member]	Jun. 30, 2011 Significant Payment Delay [Member] Six Month Period [Member]	Jun. 30, 2011 Extension of Maturity [Member] Non-owner occupied Commercial Real Estate [Member] Three month period [Member]	Jun. 30, 2011 Extension of Maturity [Member] Non-owner occupied Commercial Real Estate [Member] Six Month Period [Member]	Jun. 30, 2011 Extension of Maturity [Member] Three month period [Member]	Jun. 30, 2011 Extension of Maturity [Member] Six Month Period [Member]	Jun. 30, 2012 Interest Rate Adjusted Below Market [Member] Commercial construction, land development, and other land [Member] Six Month Period [Member]	Jun. 30, 2012 Interest Rate Adjusted Below Market [Member] Residential Real Estate [Member] Six Month Period [Member]	Jun. 30, 2012 Interest Rate Adjusted Below Market [Member] Installment and Other Consumer [Member] Six Month Period [Member]	Jun. 30, 2012 Interest Rate Adjusted Below Market [Member] Six Month Period [Member]	Jun. 30, 2012 Non-owner occupied Commercial Real Estate [Member]	Dec. 31, 2011 Non-owner occupied Commercial Real Estate [Member]	Jun. 30, 2012 Commercial and Industrial [Member]	Dec. 31, 2011 Commercial and Industrial [Member]	Jun. 30, 2012 Commercial construction, land development, and other land [Member]	Dec. 31, 2011 Commercial construction, land development, and other land [Member]	Jun. 30, 2012 Residential Real Estate [Member]	Dec. 31, 2011 Residential Real Estate [Member]	Jun. 30, 2012 Installment and Other Consumer [Member]	Dec. 31, 2011 Installment and Other Consumer [Member]	Jun. 30, 2012 Troubled Debt Restructurings [Member]	Jun. 30, 2011 Troubled Debt Restructurings [Member]
Troubled Debt Restructurings Number of Loans/Leases			4	2	2	4	1	1	1	1	1	1	1	3											5	5
Troubled Debt Restructurings Pre-Modification Recorded Investment			$ 1,175,819	$ 200,000	$ 200,000	$ 1,175,819	$ 2,851,134	$ 2,851,134	$ 2,851,134	$ 2,851,134	$ 337,500	$ 167,739	$ 16,043	$ 521,282											$ 721,282	$ 4,026,953
Troubled Debt Restructurings Post-Modification Recorded Investment			1,175,819	200,000	200,000	1,175,819	2,851,134	2,851,134	2,851,134	2,851,134	337,500	167,739	16,043	521,282											721,282	4,026,953
Troubled Debt Restructurings Specific Allowance	$ 3,650,962	$ 5,346,303		$ 144,000	$ 144,000										$ 2,155,993	$ 1,247,377	$ 265,046	$ 903,187	$ 1,018,457	$ 3,002,450	$ 117,877	$ 55,884	$ 2,313	$ 22,819	$ 144,000