Note 20 - Fair Value (Tables)

12 Months Ended

Dec. 31, 2013

Fair Value Disclosures [Abstract]

Fair Value Measurements, Recurring and Nonrecurring [Table Text Block]

			Fair Value Measurements at Reporting Date Using
	Fair Value		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
December 31, 2013:
Securities available for sale:
U.S. govt. sponsored agency securities	$	356,472,987	$	-	$	356,472,987	$	-
Residential mortgage-backed securities		157,429,451		-		157,429,451		-
Municipal securities		35,958,857		-		35,958,857		-
Other securities		1,897,163		317,698		1,579,465		-
	$	551,758,458	$	317,698	$	551,440,760	$	-
December 31, 2012:
Securities available for sale:
U.S. govt. sponsored agency securities	$	338,609,371	$	-	$	338,609,371	$	-
Residential mortgage-backed securities		163,601,103		-		163,601,103		-
Municipal securities		26,185,736		-		26,185,736		-
Trust preferred securities		139,400		-		139,400		-
Other securities		1,624,376		234,453		1,389,923		-
	$	530,159,986	$	234,453	$	529,925,533	$	-

			Fair Value Measurements at Reporting Date Using
	Fair Value		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
December 31, 2013:
Impaired loans/leases	$	9,009,557	$	-	$	-	$	9,009,557
Other real estate owned		10,507,377		-		-		10,507,377
	$	19,516,934	$	-	$	-	$	19,516,934
December 31, 2012:
Impaired loans/leases	$	18,054,234	$	-	$	-	$	18,054,234
Other real estate owned		4,270,901		-		-		4,270,901
	$	22,325,135	$	-	$	-	$	22,325,135

Fair Value Inputs, Assets, Quantitative Information [Table Text Block]

	Quantitave Information about Level Fair Value Measurments
	Fair Value		Valuation Technique	Unobservable Input	Range
December 31, 2013:
Impaired loans/leases	$	9,009,557	Appraisal of collateral	Appraisal adjustments	-10.00%	to	-50.00%
Other real estate owned		10,507,377	Appraisal of collateral	Appraisal adjustments	0.00%	to	-35.00%

	Quantitave Information about Level Fair Value Measurments
	Fair Value		Valuation Technique	Unobservable Input	Range
December 31, 2012:
Impaired loans/leases	$	18,054,234	Appraisal of collateral	Appraisal adjustments	-10.00%	to	-50.00%
Other real estate owned		4,270,901	Appraisal of collateral	Appraisal adjustments	0.00%	to	-35.00%

Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]

	Fair Value	As of December 31, 2013				As of December 31, 2012
	Heirarchy Level	Carrying Value		Estimated Fair Value		Carrying Value		Estimated Fair Value
Cash and due from banks	Level 1	$	41,950,790	$	41,950,790	$	61,568,446	$	61,568,446
Federal funds sold	Level 2		39,435,000		39,435,000		26,560,000		26,560,000
Interest-bearing deposits at financial institutions	Level 2		33,044,917		33,044,917		22,359,490		22,359,490
Investment securities:
Held to maturity	Level 3		145,451,895		138,640,105		72,079,385		73,005,706
Available for sale	See Previous Table		551,758,458		551,758,458		530,159,986		530,159,986
Loans/leases receivable, net	Level 3		8,342,182		9,009,557		16,716,883		18,054,234
Loans/leases receivable, net	Level 2		1,430,489,328		1,441,952,443		1,250,745,552		1,262,090,766
Deposits:
Nonmaturity deposits	Level 2		1,256,209,352		1,256,209,352		1,039,572,326		1,039,572,326
Time deposits	Level 2		390,781,891		394,202,000		334,541,774		337,343,000
Short-term borrowings	Level 2		149,292,967		149,292,967		171,082,961		171,082,961
Federal Home Loan Bank advances	Level 2		231,350,000		241,623,000		202,350,000		220,815,000
Other borrowings	Level 2		142,448,362		152,761,000		138,239,762		154,101,000
Junior subordinated debentures	Level 2		40,289,830		28,094,228		36,085,000		18,786,000