Note 4 - Loans/Leases Receivable (Details) - Allowance for Estimated Losses on Loans/Leases (USD $)	12 Months Ended
	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance, beginning	$ 19,925,204		$ 18,789,262		$ 20,364,656
Balance, ending	21,448,048		19,925,204		18,789,262
Loans/leases individually evaluated for impairment	19,080,420		24,294,211
Loans/leases collectively evaluated for impairment	1,436,652,213		1,259,917,023
Loans/Leases receivable	1,455,732,633		1,284,211,234
Allowance as a percentage of loans/leases individually evaluated for impairment	26.25%		18.88%
Allowance as a percentage of loans/leases collectively evaluated for impairment	1.14%		1.22%
Total allowance as a percentage of total loans/leaess	1.47%		1.55%
Allowance for loans/leases individually evaluated for impairment	5,008,822		4,587,769
Allowance for loans/leases collectively evaluated for impairment	16,439,226		15,337,435
Provisions charged to expense	5,930,420		4,370,767		6,616,014
Loans/leases charged off	(5,843,906)		(4,376,429)		(9,061,751)
Recoveries on loans/leases previously charged off	1,436,330		1,141,604		870,343
Commercial and Industrial [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance, beginning	4,531,545		4,878,006		7,548,922
Balance, ending	5,648,774		4,531,545		4,878,006
Loans/leases individually evaluated for impairment	1,761,850		1,006,952
Loans/leases collectively evaluated for impairment	429,926,279		393,237,300
Loans/Leases receivable	431,688,129		394,244,252
Allowance as a percentage of loans/leases individually evaluated for impairment	52.64%		27.82%
Allowance as a percentage of loans/leases collectively evaluated for impairment	1.10%		1.08%
Total allowance as a percentage of total loans/leaess	1.31%		1.15%
Allowance for loans/leases individually evaluated for impairment	927,453		280,170
Allowance for loans/leases collectively evaluated for impairment	4,721,321		4,251,375
Provisions charged to expense	1,453,455		(327,045)		256,945
Loans/leases charged off	(962,607)		(682,877)		(3,262,742)
Recoveries on loans/leases previously charged off	626,381		663,461		334,881
Commercial Real Estate Portfolio Segment [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance, beginning	11,069,502		10,596,958		9,087,315
Balance, ending	10,705,434		11,069,502		10,596,958
Loans/leases individually evaluated for impairment	12,956,915		20,383,846
Loans/leases collectively evaluated for impairment	658,796,014		573,595,393
Loans/Leases receivable	671,752,929		593,979,239
Allowance as a percentage of loans/leases individually evaluated for impairment	24.50%		19.65%
Allowance as a percentage of loans/leases collectively evaluated for impairment	1.14%		1.23%
Total allowance as a percentage of total loans/leaess	1.59%		1.86%
Allowance for loans/leases individually evaluated for impairment	3,174,704		4,005,042
Allowance for loans/leases collectively evaluated for impairment	7,530,730		7,064,460
Provisions charged to expense	2,635,327		2,482,327		4,759,003
Loans/leases charged off	(3,573,006)		(2,232,004)		(3,590,868)
Recoveries on loans/leases previously charged off	573,611		222,221		341,508
Finance Leases Portfolio Segment [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance, beginning	1,990,395		1,339,496		1,530,572
Balance, ending	2,517,217		1,990,395		1,339,496
Loans/leases individually evaluated for impairment	894,458		998,802
Loans/leases collectively evaluated for impairment	128,006,984		102,686,854
Loans/Leases receivable	128,901,442		103,685,656
Allowance as a percentage of loans/leases individually evaluated for impairment	21.56%		12.51%
Allowance as a percentage of loans/leases collectively evaluated for impairment	1.82%		1.82%
Total allowance as a percentage of total loans/leaess	1.95%		1.92%
Allowance for loans/leases individually evaluated for impairment	192,847		125,000
Allowance for loans/leases collectively evaluated for impairment	2,324,370		1,865,395
Provisions charged to expense	1,431,246		1,313,767		907,014
Loans/leases charged off	(916,836)		(739,755)		(1,100,886)
Recoveries on loans/leases previously charged off	12,412		76,887		2,796
Residential Portfolio Segment [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance, beginning	1,070,328		704,946		748,028
Balance, ending	1,395,849		1,070,328		704,946
Loans/leases individually evaluated for impairment	2,116,747		1,217,256
Loans/leases collectively evaluated for impairment	145,239,576		114,364,317
Loans/Leases receivable	147,356,323	[1]	115,581,573	[1]
Allowance as a percentage of loans/leases individually evaluated for impairment	11.63%		8.67%
Allowance as a percentage of loans/leases collectively evaluated for impairment	0.79%		0.84%
Total allowance as a percentage of total loans/leaess	0.95%		0.93%
Allowance for loans/leases individually evaluated for impairment	246,266		105,565
Allowance for loans/leases collectively evaluated for impairment	1,149,583		964,763
Provisions charged to expense	471,060		370,140		(4,147)
Loans/leases charged off	(162,010)		(4,758)		(38,935)
Recoveries on loans/leases previously charged off	16,471
Consumer Portfolio Segment [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance, beginning	1,263,434		1,269,856		1,449,819
Balance, ending	1,180,774		1,263,434		1,269,856
Loans/leases individually evaluated for impairment	1,350,450		687,355
Loans/leases collectively evaluated for impairment	74,683,360		76,033,159
Loans/Leases receivable	76,033,810		76,720,514
Allowance as a percentage of loans/leases individually evaluated for impairment	34.62%		10.47%
Allowance as a percentage of loans/leases collectively evaluated for impairment	0.95%		1.57%
Total allowance as a percentage of total loans/leaess	1.55%		1.65%
Allowance for loans/leases individually evaluated for impairment	467,552		71,992
Allowance for loans/leases collectively evaluated for impairment	713,222		1,191,442
Provisions charged to expense	(60,668)		531,578		697,199
Loans/leases charged off	(229,447)		(717,035)		(1,068,320)
Recoveries on loans/leases previously charged off	$ 207,455		$ 179,035		$ 191,158

[1] Includes residential real estate loans held for sale totaling $1,358,290 and $4,577,233 as of December 31, 2013 and 2012, respectively.