Note 3 - Securities (Tables)

6 Months Ended

Jun. 30, 2017

Notes Tables

Schedule of Available-for-sale Securities Reconciliation [Table Text Block]

	Amortized Cost		Gross Unrealized Gains		Gross Unrealized (Losses)			Approximate Fair Value
As of June 30, 2017
Debt Securities:
Municipals		35,989,090		235,378		(368,313	)		35,856,155
Corporates		3,000,000		55,000		-			3,055,000
Government sponsored mortgage-backed securities and SBA loan pools		46,709,113		22,669		(636,894	)		46,094,888
	$	85,698,203	$	313,047	$	(1,005,207	)	$	85,006,043

	Amortized Cost		Gross Unrealized Gains		Gross Unrealized (Losses)			Approximate Fair Value
As of December 31, 2016
Debt Securities:
Municipals	$	39,357,506	$	65,673	$	(1,085,654	)	$	38,337,525
Corporates		7,003,986		54,050		(4,514	)		7,053,522
Government sponsored mortgage-backed securities and SBA loan pools		48,115,793		19,432		(1,127,037	)		47,008,188
	$	94,477,285	$	139,155	$	(2,217,205	)	$	92,399,235

Available-for-sale Securities [Table Text Block]

	Amortized Cost		Approximate Fair Value
1-5 years		2,846,819		2,890,286
6-10 years		15,422,023		15,486,199
After 10 years		20,720,248		20,534,670
Government sponsored mortgage-backed securities and SBA loan pools not due on a single maturity date		46,709,113		46,094,888
	$	85,698,203	$	85,006,043

Held-to-maturity Securities [Table Text Block]

	Amortized Cost		Gross Unrealized Gains		Gross Unrealized (Losses)			Approximate Fair Value
As of June 30, 2017
Debt Securities:
Government sponsored mortgage-backed securities	$	20,954	$	568	$	(17	)	$	21,505

	Amortized Cost		Gross Unrealized Gains		Gross Unrealized (Losses)		Approximate Fair Value
As of December 31, 2016
Debt Securities:
Government sponsored mortgage-backed securities	$	27,528	$	625	$	-	$	28,153

Schedule of Unrealized Loss on Investments [Table Text Block]

	June 30, 2017
	Less than 12 Months					12 Months or More					Total
Description of Securities	Fair Value		Unrealized Losses			Fair Value		Unrealized Losses			Fair Value		Unrealized Losses
Municipals		19,268,849		(306,515	)		1,572,882		(61,798	)		20,841,731		(368,313	)
Government sponsored mortgage-backed securities and SBA loan pools		36,305,898		(512,187	)		5,739,609		(124,724	)		42,045,507		(636,911	)
	$	55,574,747	$	(818,702	)	$	7,312,491	$	(186,522	)	$	62,887,238	$	(1,005,224	)

	December 31, 2016
	Less than 12 Months					12 Months or More					Total
Description of Securities	Fair Value		Unrealized Losses			Fair Value		Unrealized Losses			Fair Value		Unrealized Losses
Municipals	$	33,084,816	$	(1,082,021	)	$	179,402	$	(3,633	)	$	33,264,218	$	(1,085,654	)
Corporates		1,996,172		(3,828	)		881,100		(686	)		2,877,272		(4,514	)
Government sponsored mortgage-backed securities and SBA loan pools		39,570,463		(1,022,511	)		3,649,276		(104,526	)		43,219,739		(1,127,037	)
	$	74,651,451	$	(2,108,360	)	$	4,709,778	$	(108,845	)	$	79,361,229	$	(2,217,205	)

Held-to-maturity Securities [Member]

Notes Tables

Held-to-maturity Securities [Table Text Block]

	Amortized Cost		Approximate Fair Value
Government sponsored mortgage-backed securities not due on a single maturity date	$	20,954	$	21,505