Note 3 - Loans/Leases Receivable (Details) - Nonperforming Loans/Leases - USD ($)		Mar. 31, 2016		Dec. 31, 2015
Note 3 - Loans/Leases Receivable (Details) - Nonperforming Loans/Leases [Line Items]
Accruing Past Due 90 Days or More		$ 46,418		$ 2,843
Nonaccrual Loans/Leases		10,772,347		10,648,211
Troubled Debt Restructurings - Accruing		2,732,887		2,587,413
Total Nonperforming Loans/Leases		$ 1,865,928,672		$ 1,790,286,285
Percentage of Total Nonperforming Loans/Leases		100.00%		100.00%
Nonperforming Financial Instruments [Member]
Note 3 - Loans/Leases Receivable (Details) - Nonperforming Loans/Leases [Line Items]
Accruing Past Due 90 Days or More		$ 46,418		$ 2,843
Nonaccrual Loans/Leases		10,772,347	[1]	10,648,211	[2]
Troubled Debt Restructurings - Accruing		1,156,830		1,053,756
Total Nonperforming Loans/Leases		11,975,595		11,704,810
Commercial Portfolio Segment [Member]
Note 3 - Loans/Leases Receivable (Details) - Nonperforming Loans/Leases [Line Items]
Nonaccrual Loans/Leases		5,648,002		5,791,975
Total Nonperforming Loans/Leases		$ 682,056,782		$ 648,159,892
Percentage of Total Nonperforming Loans/Leases		48.60%		50.96%
Commercial Portfolio Segment [Member] | Nonperforming Financial Instruments [Member]
Note 3 - Loans/Leases Receivable (Details) - Nonperforming Loans/Leases [Line Items]
Nonaccrual Loans/Leases		$ 5,648,002	[1]	$ 5,791,975	[2]
Troubled Debt Restructurings - Accruing		172,093		173,087
Total Nonperforming Loans/Leases		5,820,095		5,965,062
Commercial Real Estate Portfolio Segment [Member]
Note 3 - Loans/Leases Receivable (Details) - Nonperforming Loans/Leases [Line Items]
Total Nonperforming Loans/Leases		766,159,365		724,368,765
Commercial Real Estate Portfolio Segment [Member] | Owner-occupied Commercial Real Estate Loans [Member]
Note 3 - Loans/Leases Receivable (Details) - Nonperforming Loans/Leases [Line Items]
Nonaccrual Loans/Leases		658,561		727,463
Total Nonperforming Loans/Leases		$ 261,730,899		$ 252,523,164
Percentage of Total Nonperforming Loans/Leases		5.50%		6.22%
Commercial Real Estate Portfolio Segment [Member] | Owner-occupied Commercial Real Estate Loans [Member] | Nonperforming Financial Instruments [Member]
Note 3 - Loans/Leases Receivable (Details) - Nonperforming Loans/Leases [Line Items]
Nonaccrual Loans/Leases		$ 658,561	[1]	$ 727,463	[2]
Total Nonperforming Loans/Leases		658,561		727,463
Commercial Real Estate Portfolio Segment [Member] | Construction Loans [Member]
Note 3 - Loans/Leases Receivable (Details) - Nonperforming Loans/Leases [Line Items]
Nonaccrual Loans/Leases		191,366		193,804
Total Nonperforming Loans/Leases		$ 37,970,546		$ 49,083,844
Percentage of Total Nonperforming Loans/Leases		1.60%		1.66%
Commercial Real Estate Portfolio Segment [Member] | Construction Loans [Member] | Nonperforming Financial Instruments [Member]
Note 3 - Loans/Leases Receivable (Details) - Nonperforming Loans/Leases [Line Items]
Nonaccrual Loans/Leases		$ 191,366	[1]	$ 193,804	[2]
Total Nonperforming Loans/Leases		191,366		193,804
Commercial Real Estate Portfolio Segment [Member] | Other Non Owner-occupied Commercial Real Estate Loans [Member]
Note 3 - Loans/Leases Receivable (Details) - Nonperforming Loans/Leases [Line Items]
Nonaccrual Loans/Leases		1,106,526		1,107,768
Total Nonperforming Loans/Leases		$ 466,457,920		$ 422,761,757
Percentage of Total Nonperforming Loans/Leases		9.24%		9.46%
Commercial Real Estate Portfolio Segment [Member] | Other Non Owner-occupied Commercial Real Estate Loans [Member] | Nonperforming Financial Instruments [Member]
Note 3 - Loans/Leases Receivable (Details) - Nonperforming Loans/Leases [Line Items]
Nonaccrual Loans/Leases		$ 1,106,526	[1]	$ 1,107,768	[2]
Total Nonperforming Loans/Leases		1,106,526		1,107,768
Finance Leases Portfolio Segment [Member]
Note 3 - Loans/Leases Receivable (Details) - Nonperforming Loans/Leases [Line Items]
Accruing Past Due 90 Days or More				2,843
Nonaccrual Loans/Leases		1,796,456		1,701,341
Total Nonperforming Loans/Leases	[3],[4]	$ 172,774,048		$ 173,655,605
Percentage of Total Nonperforming Loans/Leases		18.81%		14.56%
Finance Leases Portfolio Segment [Member] | Nonperforming Financial Instruments [Member]
Note 3 - Loans/Leases Receivable (Details) - Nonperforming Loans/Leases [Line Items]
Accruing Past Due 90 Days or More				$ 2,843
Nonaccrual Loans/Leases		$ 1,796,456	[1]	1,701,341	[2]
Troubled Debt Restructurings - Accruing		456,592
Total Nonperforming Loans/Leases	[4]	2,253,048		1,704,184
Residential Portfolio Segment [Member]
Note 3 - Loans/Leases Receivable (Details) - Nonperforming Loans/Leases [Line Items]
Accruing Past Due 90 Days or More		46,256
Nonaccrual Loans/Leases		1,051,643		1,016,743
Total Nonperforming Loans/Leases	[4],[5]	$ 173,096,209		$ 170,432,530
Percentage of Total Nonperforming Loans/Leases		12.49%		12.12%
Residential Portfolio Segment [Member] | Nonperforming Financial Instruments [Member]
Note 3 - Loans/Leases Receivable (Details) - Nonperforming Loans/Leases [Line Items]
Accruing Past Due 90 Days or More		$ 46,256
Nonaccrual Loans/Leases		1,051,643	[1]	$ 1,016,743	[2]
Troubled Debt Restructurings - Accruing		398,337		402,044
Total Nonperforming Loans/Leases	[4]	1,496,236		1,418,787
Consumer Portfolio Segment [Member]
Note 3 - Loans/Leases Receivable (Details) - Nonperforming Loans/Leases [Line Items]
Accruing Past Due 90 Days or More		162
Nonaccrual Loans/Leases		319,793		109,117
Total Nonperforming Loans/Leases	[4]	$ 71,842,268		$ 73,669,493
Percentage of Total Nonperforming Loans/Leases		3.76%		5.02%
Consumer Portfolio Segment [Member] | Nonperforming Financial Instruments [Member]
Note 3 - Loans/Leases Receivable (Details) - Nonperforming Loans/Leases [Line Items]
Accruing Past Due 90 Days or More		$ 162
Nonaccrual Loans/Leases		319,793	[1]	$ 109,117	[2]
Troubled Debt Restructurings - Accruing		129,808		478,625
Total Nonperforming Loans/Leases	[4]	$ 449,763		$ 587,742

[1] Nonaccrual loans/leases included $1,576,057 of TDRs, including $1,217,243 in C&I loans, $191,366 in CRE loans, $37,750 in direct financing leases, $115,671 inresidential real estate loans, and $14,027 in installment loans.

[2] Nonaccrual loans/leases included $1,533,657 of TDRs, including $1,164,423 in C&I loans, $193,804 in CRE loans, $42,098 in direct financing leases, $119,305 inresidential real estate loans, and $14,027 in installment loans.

[3] Management performs an evaluation of the estimated unguaranteed residual values of leased assets on an annual basis, at a minimum. The evaluation consists of discussions with reputable and current vendors, which is combined with management's expertise and understanding of the current states of particular industries to determine informal valuations of the equipment. As necessary and where available, management will utilize valuations by independent appraisers. The large majority of leases with residual values contain a lease options rider, which requires the lessee to pay the residual value directly, finance the payment of the residual value, or extend the lease term to pay the residual value. In these cases, the residual value is protected and the risk of loss is minimal. There were no losses related to residualvalues for the three months ended March 31, 2016 and 2015.

[4] Performing = loans/leases accruing and less than 90 days past due. Nonperforming = loans/leases on nonaccrual, accruing loans/leases that are greater than or equal to 90 days past due, and accruing TDRs.

[5] Includes residential real estate loans held for sale totaling $765,385 and $565,850 as of March 31, 2016, and December 31, 2015, respectively.