Note 3 - Available-for-sale Securities (Tables)

12 Months Ended

Dec. 31, 2017

Notes Tables

Available-for-sale Securities [Table Text Block]

	Gross		Gross		Gross
	Amortized		Unrealized		Unrealized
	Cost		Gains		Losses			Fair Value
December 31, 2017
Available-for-sale securities:
Mortgage-backed securities	$	21,028,794	$	12,757	$	(272,959	)	$	20,768,592
U.S. Government agencies		2,006,786		44		(49,047	)		1,957,783
Municipal obligations		1,672,277		2,584		(1,355	)		1,673,506
	$	24,707,857	$	15,385	$	(323,361	)	$	24,399,881
December 31, 2016
Available-for-sale securities:
Mortgage-backed securities	$	27,524,834	$	45,866	$	(442,303	)	$	27,128,397
U.S. Government agencies		2,588,843		-		(63,107	)		2,525,736
Municipal obligations		1,837,337		7,823		(161	)		1,844,999
	$	31,951,014	$	53,689	$	(505,571	)	$	31,499,132

Gain (Loss) on Investments [Table Text Block]

	Year Ended December 31,
	2017			2016
Proceeds from sale	$	6,933,361		$	-
Sales gains	$	3,618		$	-
Sales losses	$	(179,707	)	$	-

Available-for-sale Securities Debt Maturities [Table Text Block]

	December 31, 2017				December 31, 2016
	Amortized		Fair		Amortized		Fair
	Cost		Value		Cost		Value
Due in one year or less	$	1,254,321	$	1,256,906	$	121,744	$	121,884
Due after one to five years		21,574,631		21,306,086		29,365,434		28,889,086
Due after five to ten years		1,878,905		1,836,889		2,463,836		2,488,162
Totals	$	24,707,857	$	24,399,881	$	31,951,014	$	31,499,132

Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value [Table Text Block]

	December 31, 2017
	Less Than 12 Months					12 Months or More					Total
			Gross					Gross					Gross
Description of			Unrealized					Unrealized					Unrealized
Securities	Fair Value		Losses			Fair Value		Losses			Fair Value		Losses
Available-for-sale securities:
Mortgage-backed securities	$	3,468,607	$	(39,099	)	$	9,763,879	$	(233,860	)	$	13,232,486	$	(272,959	)
U.S. Government agencies		-		-			1,548,481		(49,047	)		1,548,481		(49,047	)
Municipal obligations		416,600		(1,355	)		-					416,600		(1,355	)
Total temporarily impaired securities	$	3,885,207	$	(40,454	)	$	11,312,360	$	(282,907	)	$	15,197,567	$	(323,361	)

	December 31, 2016
	Less Than 12 Months					12 Months or More					Total
			Gross					Gross					Gross
Description of			Unrealized					Unrealized					Unrealized
Securities	Fair Value		Losses			Fair Value		Losses			Fair Value		Losses
Available-for-sale securities:
Mortgage-backed securities	$	17,377,335	$	(337,092	)	$	5,351,384	$	(105,211	)	$	22,728,719	$	(442,303	)
U.S. Government agencies		2,525,737		(63,107	)		-		-			2,525,737		(63,107	)
Municipal obligations		20,054		(161	)		-		-			20,054		(161	)
Total temporarily impaired securities	$	19,923,126	$	(400,360	)	$	5,351,384	$	(105,211	)	$	25,274,510	$	(505,571	)