Note 3 - Loans/Leases Receivable (Detail) - Information For Impaired Loans/Leases by Classes of Financing Receivable (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Dec. 31, 2011
Impaired Loans/Leases with No Specific Allowance Recorded:
Impaired Loans/Leases with No Specific Allowance Recorded - Average Recorded Investment	$ 15,604,148	$ 9,897,081
Impaired Loans/Leases with No Specific Allowance Recorded - Interest Income Recognized	3,457	0
Impaired Loans/Leases with No Specific Allowance Recorded - Interest Income Recognized for Cash Payments Received	3,457	0
Impaired Loans/Leases with No Specific Allowance Recorded - Recorded Investment				7,511,233
Impaired Loans/Leases with No Specific Allowance Recorded - Unpaid Principal Balance				8,253,794
Impaired Loans/Leases with Specific Allowance Recorded:
Impaired Loans/Leases with Specific Allowance Recorded - Average Recorded Investment	11,667,009	16,975,316
Impaired Loans/Leases with Specific Allowance Recorded - Interest Income Recognized	85,084	19,850
Impaired Loans/Leases with Specific Allowance Recorded - Interest Income Recognized for Cash Payments Received	85,084	19,850
Impaired Loans/Leases with Specific Allowance Recorded - Recorded Investment				22,347,930
Impaired Loans/Leases with Specific Allowance Recorded - Unpaid Principal Balance				22,847,930
Impaired Loans/Leases with Specific Allowance Recorded - Related Allowance	3,650,962		3,650,962	5,346,303
Total Impaired Loans/Leases:
Average Recorded Investment	27,271,157	26,872,397	28,382,107
Interest Income Recognized	88,541	19,850	162,830
Interest Income Recognized for Cash Payments Received	88,541	19,850	162,830
Recorded Investment	25,161,521		25,161,521	29,859,163
Unpaid Principal Balance	27,317,874		27,317,874	31,101,724
Related Allowance	3,650,962		3,650,962	5,346,303
Commercial and Industrial [Member]
Impaired Loans/Leases with No Specific Allowance Recorded:
Impaired Loans/Leases with No Specific Allowance Recorded - Average Recorded Investment	870,085	1,455,378
Impaired Loans/Leases with No Specific Allowance Recorded - Interest Income Recognized	0	0
Impaired Loans/Leases with No Specific Allowance Recorded - Interest Income Recognized for Cash Payments Received	0	0
Impaired Loans/Leases with No Specific Allowance Recorded - Recorded Investment				360,947
Impaired Loans/Leases with No Specific Allowance Recorded - Unpaid Principal Balance				979,901
Impaired Loans/Leases with Specific Allowance Recorded:
Impaired Loans/Leases with Specific Allowance Recorded - Average Recorded Investment	314,872	3,666,049
Impaired Loans/Leases with Specific Allowance Recorded - Interest Income Recognized	1,971	1,705
Impaired Loans/Leases with Specific Allowance Recorded - Interest Income Recognized for Cash Payments Received	1,971	1,705
Impaired Loans/Leases with Specific Allowance Recorded - Recorded Investment				1,791,908
Impaired Loans/Leases with Specific Allowance Recorded - Unpaid Principal Balance				1,791,908
Impaired Loans/Leases with Specific Allowance Recorded - Related Allowance	265,046		265,046	903,187
Total Impaired Loans/Leases:
Average Recorded Investment	1,184,957	5,121,427	1,512,364
Interest Income Recognized	1,971	1,705	3,951
Interest Income Recognized for Cash Payments Received	1,971	1,705	3,951
Recorded Investment	1,011,904		1,011,904	2,152,855
Unpaid Principal Balance	1,743,689		1,743,689	2,771,809
Related Allowance	265,046		265,046	903,187
Owner-occupied commercial real estate [Member]
Impaired Loans/Leases with No Specific Allowance Recorded:
Impaired Loans/Leases with No Specific Allowance Recorded - Average Recorded Investment	668,313	1,737,998
Impaired Loans/Leases with No Specific Allowance Recorded - Interest Income Recognized	0	0
Impaired Loans/Leases with No Specific Allowance Recorded - Interest Income Recognized for Cash Payments Received	0	0
Impaired Loans/Leases with No Specific Allowance Recorded - Recorded Investment				736,610
Impaired Loans/Leases with No Specific Allowance Recorded - Unpaid Principal Balance				736,610
Impaired Loans/Leases with Specific Allowance Recorded:
Impaired Loans/Leases with Specific Allowance Recorded - Average Recorded Investment	66,660	370,843
Impaired Loans/Leases with Specific Allowance Recorded - Interest Income Recognized	0	18,145
Impaired Loans/Leases with Specific Allowance Recorded - Interest Income Recognized for Cash Payments Received	0	18,145
Impaired Loans/Leases with Specific Allowance Recorded - Recorded Investment				217,059
Impaired Loans/Leases with Specific Allowance Recorded - Unpaid Principal Balance				217,059
Impaired Loans/Leases with Specific Allowance Recorded - Related Allowance	1,276		1,276	47,911
Total Impaired Loans/Leases:
Average Recorded Investment	734,973	2,108,841	778,123
Interest Income Recognized	0	18,145
Interest Income Recognized for Cash Payments Received	0	18,145
Recorded Investment	622,389		622,389	953,669
Unpaid Principal Balance	622,389		622,389	953,669
Related Allowance	1,276		1,276	47,911
Commercial construction, land development, and other land [Member]
Impaired Loans/Leases with No Specific Allowance Recorded:
Impaired Loans/Leases with No Specific Allowance Recorded - Average Recorded Investment	4,773,032	184,693
Impaired Loans/Leases with No Specific Allowance Recorded - Interest Income Recognized	1,683
Impaired Loans/Leases with No Specific Allowance Recorded - Interest Income Recognized for Cash Payments Received	1,683
Impaired Loans/Leases with Specific Allowance Recorded:
Impaired Loans/Leases with Specific Allowance Recorded - Average Recorded Investment	2,348,194	4,688,045
Impaired Loans/Leases with Specific Allowance Recorded - Interest Income Recognized	0	0
Impaired Loans/Leases with Specific Allowance Recorded - Interest Income Recognized for Cash Payments Received	0	0
Impaired Loans/Leases with Specific Allowance Recorded - Recorded Investment				9,051,455
Impaired Loans/Leases with Specific Allowance Recorded - Unpaid Principal Balance				9,051,455
Impaired Loans/Leases with Specific Allowance Recorded - Related Allowance	1,018,457		1,018,457	3,002,450
Total Impaired Loans/Leases:
Average Recorded Investment	7,121,226	4,872,738	7,369,784
Interest Income Recognized	1,683	0	3,851
Interest Income Recognized for Cash Payments Received	1,683	0	3,851
Recorded Investment	3,779,883		3,779,883	9,051,455
Unpaid Principal Balance	4,385,719		4,385,719	9,051,455
Related Allowance	1,018,457		1,018,457	3,002,450
Non-owner occupied Commercial Real Estate [Member]
Impaired Loans/Leases with No Specific Allowance Recorded:
Impaired Loans/Leases with No Specific Allowance Recorded - Average Recorded Investment	6,997,797	3,840,268
Impaired Loans/Leases with No Specific Allowance Recorded - Interest Income Recognized	0	0
Impaired Loans/Leases with No Specific Allowance Recorded - Interest Income Recognized for Cash Payments Received	0	0
Impaired Loans/Leases with No Specific Allowance Recorded - Recorded Investment				3,936,826
Impaired Loans/Leases with No Specific Allowance Recorded - Unpaid Principal Balance				3,986,820
Impaired Loans/Leases with Specific Allowance Recorded:
Impaired Loans/Leases with Specific Allowance Recorded - Average Recorded Investment	8,354,604	7,130,672
Impaired Loans/Leases with Specific Allowance Recorded - Interest Income Recognized	83,113	0
Impaired Loans/Leases with Specific Allowance Recorded - Interest Income Recognized for Cash Payments Received	83,113	0
Impaired Loans/Leases with Specific Allowance Recorded - Recorded Investment				10,339,415
Impaired Loans/Leases with Specific Allowance Recorded - Unpaid Principal Balance				10,839,415
Impaired Loans/Leases with Specific Allowance Recorded - Related Allowance	2,155,993		2,155,993	1,247,377
Total Impaired Loans/Leases:
Average Recorded Investment	15,352,401	10,970,940	15,636,051
Interest Income Recognized	83,113	0	151,558
Interest Income Recognized for Cash Payments Received	83,113	0	151,558
Recorded Investment	16,903,023		16,903,023	14,276,241
Unpaid Principal Balance	17,703,023		17,703,023	14,826,235
Related Allowance	2,155,993		2,155,993	1,247,377
Leases receivable [Member]
Impaired Loans/Leases with No Specific Allowance Recorded:
Impaired Loans/Leases with No Specific Allowance Recorded - Average Recorded Investment	585,845	1,052,176
Impaired Loans/Leases with No Specific Allowance Recorded - Interest Income Recognized	0	0
Impaired Loans/Leases with No Specific Allowance Recorded - Interest Income Recognized for Cash Payments Received	0	0
Impaired Loans/Leases with No Specific Allowance Recorded - Recorded Investment				1,094,178
Impaired Loans/Leases with No Specific Allowance Recorded - Unpaid Principal Balance				1,094,178
Impaired Loans/Leases with Specific Allowance Recorded:
Impaired Loans/Leases with Specific Allowance Recorded - Average Recorded Investment	118,275	746,288
Impaired Loans/Leases with Specific Allowance Recorded - Interest Income Recognized	0	0
Impaired Loans/Leases with Specific Allowance Recorded - Interest Income Recognized for Cash Payments Received	0	0
Impaired Loans/Leases with Specific Allowance Recorded - Recorded Investment				212,485
Impaired Loans/Leases with Specific Allowance Recorded - Unpaid Principal Balance				212,485
Impaired Loans/Leases with Specific Allowance Recorded - Related Allowance	90,000		90,000	66,675
Total Impaired Loans/Leases:
Average Recorded Investment	704,120	1,798,464	904,967
Interest Income Recognized	0	0
Interest Income Recognized for Cash Payments Received	0	0
Recorded Investment	687,508		687,508	1,306,663
Unpaid Principal Balance	687,508		687,508	1,306,663
Related Allowance	90,000		90,000	66,675
Residential Real Estate [Member]
Impaired Loans/Leases with No Specific Allowance Recorded:
Impaired Loans/Leases with No Specific Allowance Recorded - Average Recorded Investment	734,485	958,303
Impaired Loans/Leases with No Specific Allowance Recorded - Interest Income Recognized	1,673
Impaired Loans/Leases with No Specific Allowance Recorded - Interest Income Recognized for Cash Payments Received	1,673
Impaired Loans/Leases with No Specific Allowance Recorded - Recorded Investment				788,685
Impaired Loans/Leases with No Specific Allowance Recorded - Unpaid Principal Balance				862,298
Impaired Loans/Leases with Specific Allowance Recorded:
Impaired Loans/Leases with Specific Allowance Recorded - Average Recorded Investment	462,406	140,332
Impaired Loans/Leases with Specific Allowance Recorded - Interest Income Recognized	0	0
Impaired Loans/Leases with Specific Allowance Recorded - Interest Income Recognized for Cash Payments Received	0	0
Impaired Loans/Leases with Specific Allowance Recorded - Recorded Investment				344,789
Impaired Loans/Leases with Specific Allowance Recorded - Unpaid Principal Balance				344,789
Impaired Loans/Leases with Specific Allowance Recorded - Related Allowance	117,877		117,877	55,884
Total Impaired Loans/Leases:
Average Recorded Investment	1,196,891	1,098,635	1,206,583
Interest Income Recognized	1,673	0	3,346
Interest Income Recognized for Cash Payments Received	1,673	0	3,346
Recorded Investment	1,191,136		1,191,136	1,133,474
Unpaid Principal Balance	1,191,136		1,191,136	1,207,087
Related Allowance	117,877		117,877	55,884
Installment and Other Consumer [Member]
Impaired Loans/Leases with No Specific Allowance Recorded:
Impaired Loans/Leases with No Specific Allowance Recorded - Average Recorded Investment	974,591	668,265
Impaired Loans/Leases with No Specific Allowance Recorded - Interest Income Recognized	101	0
Impaired Loans/Leases with No Specific Allowance Recorded - Interest Income Recognized for Cash Payments Received	101	0
Impaired Loans/Leases with No Specific Allowance Recorded - Recorded Investment				593,987
Impaired Loans/Leases with No Specific Allowance Recorded - Unpaid Principal Balance				593,987
Impaired Loans/Leases with Specific Allowance Recorded:
Impaired Loans/Leases with Specific Allowance Recorded - Average Recorded Investment	1,998	233,087
Impaired Loans/Leases with Specific Allowance Recorded - Interest Income Recognized	0	0
Impaired Loans/Leases with Specific Allowance Recorded - Interest Income Recognized for Cash Payments Received	0	0
Impaired Loans/Leases with Specific Allowance Recorded - Recorded Investment				390,819
Impaired Loans/Leases with Specific Allowance Recorded - Unpaid Principal Balance				390,819
Impaired Loans/Leases with Specific Allowance Recorded - Related Allowance	2,313		2,313	22,819
Total Impaired Loans/Leases:
Average Recorded Investment	976,589	901,352	974,235
Interest Income Recognized	101	0	124
Interest Income Recognized for Cash Payments Received	101	0	124
Recorded Investment	965,678		965,678	984,806
Unpaid Principal Balance	984,410		984,410	984,806
Related Allowance	$ 2,313		$ 2,313	$ 22,819