Note 3 - Loans Leases Receivable - Loans Leases Nonperforming Loans Leases (Details) - USD ($)		Sep. 30, 2016	Dec. 31, 2015
Commercial Portfolio Segment [Member] | Nonperforming Financial Instruments [Member]
Accruing Past Due 90 Days or More
Nonaccrual Loans/Leases	[1]		5,791,975
Accruing TDRs		$ 170,113	173,087
Loans		$ 6,943,803	$ 5,965,062
Loans and leases as a percentage of total loan/lease portfolio		41.86%	50.96%
Commercial Portfolio Segment [Member]
Accruing Past Due 90 Days or More		$ 266,485
Nonaccrual Loans/Leases		6,507,205	$ 5,791,975
Loans		804,307,562	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]		727,463
Accruing TDRs
Loans		$ 1,599,213	$ 727,463
Loans and leases as a percentage of total loan/lease portfolio		9.64%	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	[1]		193,804
Accruing TDRs
Loans		$ 492,266	$ 193,804
Loans and leases as a percentage of total loan/lease portfolio		2.97%	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
Nonaccrual Loans/Leases	[1]		1,107,768
Accruing TDRs
Loans		$ 1,716,564	$ 1,107,768
Loans and leases as a percentage of total loan/lease portfolio		10.35%	9.46%
Commercial Real Estate Portfolio Segment [Member] | Owner Occupied Commercial Real Estate Loans [Member]
Accruing Past Due 90 Days or More
Nonaccrual Loans/Leases		1,599,213	$ 727,463
Loans		317,899,011	252,523,164
Commercial Real Estate Portfolio Segment [Member] | Construction Loans [Member]
Accruing Past Due 90 Days or More
Nonaccrual Loans/Leases		492,266	193,804
Loans		160,527,094	49,083,844
Commercial Real Estate Portfolio Segment [Member] | Other Non-owner Occupied Commercial Real Estate Loans [Member]
Accruing Past Due 90 Days or More
Nonaccrual Loans/Leases		1,716,564	1,107,768
Loans		591,878,656	422,761,757
Commercial Real Estate Portfolio Segment [Member]
Loans		1,070,304,761	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]		1,701,341
Accruing TDRs		1,138,335
Loans	[2]	$ 3,326,501	$ 1,704,184
Loans and leases as a percentage of total loan/lease portfolio		20.05%	14.56%
Finance Leases Portfolio Segment [Member]
Accruing Past Due 90 Days or More			$ 2,843
Nonaccrual Loans/Leases		2,188,166	1,701,341
Loans	[2],[3]	166,924,077	173,655,605
Residential Portfolio Segment [Member] | Nonperforming Financial Instruments [Member]
Accruing Past Due 90 Days or More
Nonaccrual Loans/Leases	[1]		1,016,743
Accruing TDRs		390,039	402,044
Loans		$ 2,172,045	$ 1,418,787	[2]
Loans and leases as a percentage of total loan/lease portfolio		13.09%	12.12%
Residential Portfolio Segment [Member]
Accruing Past Due 90 Days or More		$ 104,789
Nonaccrual Loans/Leases		1,677,217	$ 1,016,743
Loans	[2],[4]	229,080,600	170,432,530
Consumer Portfolio Segment [Member] | Nonperforming Financial Instruments [Member]
Accruing Past Due 90 Days or More
Nonaccrual Loans/Leases	[1]		109,117
Accruing TDRs		126,998	478,625
Loans	[2]	$ 337,512	$ 587,742
Loans and leases as a percentage of total loan/lease portfolio		2.03%	5.02%
Consumer Portfolio Segment [Member]
Accruing Past Due 90 Days or More		$ 20,492
Nonaccrual Loans/Leases		190,022	$ 109,117
Loans	[2]	81,917,732	73,669,493
Nonperforming Financial Instruments [Member]
Accruing Past Due 90 Days or More			2,843
Nonaccrual Loans/Leases	[1]		10,648,211
Accruing TDRs		1,825,485	1,053,756
Loans		$ 16,587,904	$ 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		$ 391,766	$ 2,843
Nonaccrual Loans/Leases		14,370,653	10,648,211
Accruing TDRs		6,684,905	2,587,413
Loans		$ 2,352,534,732	$ 1,790,286,285
Loans and leases as a percentage of total loan/lease portfolio		100.00%	100.00%

[1] 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.

[2] 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.

[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 residual values for the three and nine months ended September 30, 2016 and 2015.

[4] Includes residential real estate loans held for sale totaling $1,377,875 and $565,850 as of September 30, 2016, and December 31, 2015, respectively.