Note 3 - Nonperforming Loans Leases (Details) - USD ($)		Jun. 30, 2016		Dec. 31, 2015
Commercial Portfolio Segment [Member] | Nonperforming Financial Instruments [Member]
Accruing Past Due 90 Days or More
Nonaccrual Loans/Leases		4,776,046	[1]	5,791,975	[2]
Accruing TDRs		171,108		173,087
Loans		$ 4,947,154		$ 5,965,062
Loans and leases as a percentage of total loan/lease portfolio		39.34%		50.96%
Commercial Portfolio Segment [Member]
Nonaccrual Loans/Leases		$ 4,776,046		$ 5,791,975
Loans		706,261,186		648,159,892
Commercial Real Estate Portfolio Segment [Member] | Nonperforming Financial Instruments [Member] | Owner Occupied Commercial Real Estate Loans [Member]
Accruing Past Due 90 Days or More
Nonaccrual Loans/Leases		1,043,530	[1]	727,463	[2]
Accruing TDRs
Loans		$ 1,043,530		$ 727,463
Loans and leases as a percentage of total loan/lease portfolio		8.30%		6.22%
Commercial Real Estate Portfolio Segment [Member] | Nonperforming Financial Instruments [Member] | Construction Loans [Member]
Accruing Past Due 90 Days or More
Nonaccrual Loans/Leases		188,981	[1]	193,804	[2]
Accruing TDRs
Loans		$ 188,981		$ 193,804
Loans and leases as a percentage of total loan/lease portfolio		1.50%		1.66%
Commercial Real Estate Portfolio Segment [Member] | Nonperforming Financial Instruments [Member] | Other Non-owner Occupied Commercial Real Estate Loans [Member]
Accruing Past Due 90 Days or More		$ 84,500
Nonaccrual Loans/Leases		1,485,865	[1]	1,107,768	[2]
Accruing TDRs
Loans		$ 1,570,365		$ 1,107,768
Loans and leases as a percentage of total loan/lease portfolio		12.49%		9.46%
Commercial Real Estate Portfolio Segment [Member] | Owner Occupied Commercial Real Estate Loans [Member]
Nonaccrual Loans/Leases		$ 1,043,530		$ 727,463
Loans		258,688,445		252,523,164
Commercial Real Estate Portfolio Segment [Member] | Construction Loans [Member]
Nonaccrual Loans/Leases		188,981		193,804
Loans		48,948,825		49,083,844
Commercial Real Estate Portfolio Segment [Member] | Other Non-owner Occupied Commercial Real Estate Loans [Member]
Nonaccrual Loans/Leases		1,485,865		1,107,768
Loans		476,741,839		422,761,757
Commercial Real Estate Portfolio Segment [Member]
Loans		784,379,109		724,368,765
Finance Leases Portfolio Segment [Member] | Nonperforming Financial Instruments [Member]
Accruing Past Due 90 Days or More				2,843
Nonaccrual Loans/Leases		1,733,029	[1]	1,701,341	[2]
Accruing TDRs		1,059,919
Loans	[3]	$ 2,792,948		$ 1,704,184
Loans and leases as a percentage of total loan/lease portfolio		22.21%		14.56%
Finance Leases Portfolio Segment [Member]
Accruing Past Due 90 Days or More				$ 2,843
Nonaccrual Loans/Leases		$ 1,733,029		1,701,341
Loans	[3],[4]	169,927,481		173,655,605
Residential Portfolio Segment [Member] | Nonperforming Financial Instruments [Member]
Accruing Past Due 90 Days or More
Nonaccrual Loans/Leases		1,191,215	[1]	1,016,743	[2]
Accruing TDRs		393,799		402,044
Loans	[3]	$ 1,585,014		$ 1,418,787
Loans and leases as a percentage of total loan/lease portfolio		12.60%		12.12%
Residential Portfolio Segment [Member]
Accruing Past Due 90 Days or More
Nonaccrual Loans/Leases		1,191,215		$ 1,016,743
Loans	[3],[5]	180,482,005		170,432,530
Consumer Portfolio Segment [Member] | Nonperforming Financial Instruments [Member]
Accruing Past Due 90 Days or More		1,868
Nonaccrual Loans/Leases		318,145	[1]	109,117	[2]
Accruing TDRs		128,151		478,625
Loans	[3]	$ 448,164		$ 587,742
Loans and leases as a percentage of total loan/lease portfolio		3.56%		5.02%
Consumer Portfolio Segment [Member]
Accruing Past Due 90 Days or More		$ 1,868
Nonaccrual Loans/Leases		318,145		$ 109,117
Loans	[3]	73,658,172		73,669,493
Nonperforming Financial Instruments [Member]
Accruing Past Due 90 Days or More		86,368		2,843
Nonaccrual Loans/Leases		10,736,811	[1]	10,648,211	[2]
Accruing TDRs		1,752,977		1,053,756
Loans		$ 12,576,156		$ 11,704,810
Loans and leases as a percentage of total loan/lease portfolio		100.00%		100.00%
Accruing Past Due 90 Days or More		$ 86,368		$ 2,843
Nonaccrual Loans/Leases		10,736,811		10,648,211
Accruing TDRs		4,104,114		2,587,413
Loans		$ 1,914,707,953		$ 1,790,286,285
Loans and leases as a percentage of total loan/lease portfolio		100.00%		100.00%

[1] Nonaccrual loans/leases included $2,351,137 of TDRs, including $767,261 in C&I loans, $1,422,722 in CRE loans, $34,850 in direct financing leases, $113,031 in residential real estate loans, and $13,273 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 in residential real estate loans, and $14,027 in installment loans.

[3] 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.

[4] 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 residual values for the three and six months ended June 30, 2016 and 2015.

[5] Includes residential real estate loans held for sale totaling $1,558,500 and $565,850 as of June 30, 2016, and December 31, 2015, respectively.