Note 3 - Loans/Leases Receivable (Details) - Aging of the Loan/Lease Portfolio (USD $)	Sep. 30, 2014		Dec. 31, 2013
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	$ 1,536,535,721		$ 1,430,204,215
30-59 Days Past Due	2,448,884		5,430,932
60-89 Days Past Due	1,287,914		2,135,415
Accruing Past Due 90 Days or More	55,406		84,174
Nonacrrual Loans/Loans	26,337,439		17,877,897
Total	1,566,665,364		1,455,732,633
Current as a percentage of total loan/lease portfolio	98.08%		98.25%
30-59 Days Past Due as a percentage of total loan/lease portfolio	0.16%		0.37%
60-89 Days Past Due as a percentage of total loan/lease portfolio	0.08%		0.15%
Accruing Past Due 90 Days or More as a percentage of total loan/lease portfolio	0.00%		0.01%
Nonacrrual Loans/Loans as a percentage of total loan/lease portfolio	1.68%		1.23%
Total as a percentage of total loan/lease portfolio	100.00%		100.00%
Commercial and Industrial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	470,898,126		429,557,699
30-59 Days Past Due	638,002		199,949
60-89 Days Past Due	284,380		185,500
Nonacrrual Loans/Loans	7,926,551	[1]	1,744,981	[2]
Total	479,747,059		431,688,129
Total as a percentage of total loan/lease portfolio	32.83%		12.81%
Owner-Occupied Commercial Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	249,903,102		258,557,660
30-59 Days Past Due			465,418
60-89 Days Past Due			993,163
Accruing Past Due 90 Days or More			60,286
Nonacrrual Loans/Loans	1,173,258	[1]	1,139,385	[2]
Total	251,076,360		261,215,912
Total as a percentage of total loan/lease portfolio	4.11%		5.86%
Commercial Construction, Land Development, and Other Land [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	68,732,309		56,301,186
30-59 Days Past Due	510,364		358,626
Nonacrrual Loans/Loans	613,351	[1]	1,185,090	[2]
Total	69,856,024		57,844,902
Total as a percentage of total loan/lease portfolio	2.15%		5.79%
Other Commercial Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	363,737,989		341,743,730
30-59 Days Past Due	266,956		476,877
60-89 Days Past Due	25,543		151,017
Nonacrrual Loans/Loans	12,765,161		10,320,491
Total	376,795,649		352,692,115
Finance Leases Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	159,714,653		126,878,515
30-59 Days Past Due	699,590		714,464
60-89 Days Past Due	392,119		414,005
Nonacrrual Loans/Loans	1,669,717	[1]	894,458	[2]
Total	162,476,079	[3]	128,901,442	[3]
Total as a percentage of total loan/lease portfolio	5.85%		4.37%
Residential Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	153,145,275		142,353,936
30-59 Days Past Due	49,543		3,088,516
60-89 Days Past Due	382,281		275,262
Accruing Past Due 90 Days or More	51,094		20,126
Nonacrrual Loans/Loans	1,325,827	[1]	1,618,483	[2]
Total	154,954,020	[4]	147,356,323	[4]
Total as a percentage of total loan/lease portfolio	6.00%		9.82%
Consumer Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	70,404,267		74,811,489
30-59 Days Past Due	284,429		127,082
60-89 Days Past Due	203,591		116,468
Accruing Past Due 90 Days or More	4,312		3,762
Nonacrrual Loans/Loans	863,574	[1]	975,009	[2]
Total	$ 71,760,173		$ 76,033,810
Total as a percentage of total loan/lease portfolio	4.29%		6.57%

[1] Nonaccrual loans/leases includes $9,620,674 of troubled debt restructurings, including $81,043 in commercial and industrial loans, $8,768,590 in commercial real estate loans, $64,144 in direct financing leases, $515,827 in residential real estate loans, and $191,070 in installment loans.

[2] Nonaccrual loans/leases includes $10,890,785 of troubled debt restructurings, including $77,072 in commercial and industrial loans, $10,077,501 in commercial real estate loans, $446,996 in residential real estate loans, and $289,216 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 and 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, 2014 and 2013.

[4] Includes residential real estate loans held for sale totaling $1,642,300 and $1,358,290 as of September 30, 2014, and December 31, 2013, respectively.