Note 5 - Fair Value (Tables)

9 Months Ended

Sep. 30, 2017

Notes Tables

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

			Fair Value Measurements at Reporting Date Using
			Quoted Prices		Significant
			in Active		Other		Significant
			Markets for		Observable		Unobservable
			Identical Assets		Inputs		Inputs
	Fair Value		(Level 1)		(Level 2)		(Level 3)
September 30, 2017:
Securities AFS:
U.S. govt. sponsored agency securities	$	39,340,168	$	-	$	39,340,168	$	-
Residential mortgage-backed and related securities		158,968,509		-		158,968,509		-
Municipal securities		56,763,060		-		56,763,060		-
Other securities		4,882,685		1,017		4,881,668		-
Interest rate caps		390,527		-		390,527		-
Interest rate swaps - assets		2,603,002		-		2,603,002		-
Total assets measured at fair value	$	262,947,951	$	1,017	$	262,946,934	$	-
Interest rate swaps - liabilities	$	2,603,002	$	-	$	2,603,002	$	-
Total liabilities measured at fair value	$	2,603,002	$	-	$	2,603,002	$	-
December 31, 2016 :
Securities AFS:
U.S. govt. sponsored agency securities	$	46,083,607	$	-	$	46,083,607	$	-
Residential mortgage-backed and related securities		147,702,127		-		147,702,127		-
Municipal securities		52,604,426		-		52,604,426		-
Other securities		4,722,979		1,361		4,721,618		-
Interest rate caps		576,527		-		576,527		-
Interest rate swaps - assets		2,338,281		-		2,338,281		-
Total assets measured at fair value	$	254,027,947	$	1,361	$	254,026,586	$	-
Interest rate swaps - liabilities	$	2,338,281	$	-	$	2,338,281	$	-
Total liabilities measured at fair value	$	2,338,281	$	-	$	2,338,281	$	-

			Fair Value Measurements at Reporting Date Using
	Fair Value		Level 1		Level 2		Level 3
September 30, 2017:
Impaired loans/leases	$	18,177,320	$	-	$	-	$	18,177,320
OREO		5,545,633		-		-		5,545,633
	$	23,722,953	$	-	$	-	$	23,722,953
December 31, 2016:
Impaired loans/leases	$	12,823,121	$	-	$	-	$	12,823,121
OREO		5,964,952		-		-		5,964,952
	$	18,788,073	$	-	$	-	$	18,788,073

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

	Quantitative Information about Level Fair Value Measurements
	Fair Value September 30, 2017		Fair Value December 31, 2016		Valuation Technique	Unobservable Input	Range
Impaired loans/leases	$	18,177,320	$	12,823,121	Appraisal of collateral	Appraisal adjustments		-10.00%	to	-50.00	%
OREO		5,545,633		5,964,952	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 September 30, 2017				As of December 31, 2016
	Hierarchy	Carrying		Estimated		Carrying		Estimated
	Level	Value		Fair Value		Value		Fair Value
Cash and due from banks	Level 1	$	56,274,561	$	56,274,561	$	70,569,993	$	70,569,993
Federal funds sold	Level 2		20,568,000		20,568,000		22,257,000	$	22,257,000
Interest-bearing deposits at financial institutions	Level 2		41,221,383		41,221,383		63,948,925	$	63,948,925
Investment securities:
HTM	Level 2		323,981,227		323,436,578		322,909,056	$	320,414,899
AFS	See Previous Table		259,954,422		259,954,422		251,113,139	$	251,113,139
Loans/leases receivable, net	Level 3		16,830,852		18,177,320		11,873,260	$	12,823,121
Loans/leases receivable, net	Level 2		2,624,941,618		2,607,041,000		2,362,856,277	$	2,344,462,740
Interest rate caps	Level 2		390,527		390,527		576,527	$	576,527
Interest rate swaps - assets	Level 2		2,603,002		2,603,002		2,338,281	$	2,338,281
Deposits:
Nonmaturity deposits	Level 2		2,365,493,644		2,365,493,644		2,188,683,349	$	2,188,683,349
Time deposits	Level 2		528,774,838		526,265,000		480,577,924	$	479,605,000
Short-term borrowings	Level 2		16,010,805		16,010,805		39,971,387	$	39,971,387
FHLB advances	Level 2		169,055,000		169,434,000		137,500,000	$	138,338,000
Other borrowings	Level 2		77,500,000		78,428,000		80,000,000	$	81,282,000
Junior subordinated debentures	Level 2		33,578,744		25,349,715		33,480,202	$	24,881,494
Interest rate swaps - liabilities	Level 2		2,603,002		2,603,002		2,338,281		2,338,281