Note 5 - Investment Securities Available for Sale (Tables)

3 Months Ended

Jun. 30, 2017

Notes Tables

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

			Gross		Gross
	Amortized		unrealized		unrealized		Fair
June 30, 2017	cost		gains		losses		value
U.S. government agencies	$	3,521,460	$	310	$	13,142	$	3,508,628
Municipal bonds		17,051,933		30,894		618,977		16,463,850
Corporate bonds		2,000,000		-		80,504		1,919,496
Mortgage-backed securities		77,678,074		74,001		1,030,266		76,721,809
	$	100,251,467	$	105,205	$	1,742,889	$	98,613,783

			Gross		Gross
	Amortized		unrealized		unrealized		Fair
March 31, 2017	cost		gains		losses		value
U.S. government agencies	$	3,525,373	$	323	$	13,393	$	3,512,303
Municipal bonds		17,096,477		21,858		950,496		16,167,839
Corporate bonds		2,000,000		-		83,478		1,916,522
Mortgage-backed securities		81,994,305		65,094		1,226,935		80,832,464
	$	104,616,155	$	87,275	$	2,274,302	$	102,429,128

Investments Classified by Contractual Maturity Date [Table Text Block]

	Available for Sale
	June 30, 2017				March 31, 2017
	Amortized		Fair		Amortized		Fair
	cost		value		cost		value
Maturing
Within one year	$	-	$	-	$	-	$	-
Over one to five years		4,228,385		4,238,868		4,234,642		4,240,740
Over five to ten years		5,216,084		5,098,347		5,538,313		5,404,810
Over ten years		13,128,924		12,554,759		12,848,895		11,951,114
Mortgage-backed, in monthly installments		77,678,074		76,721,809		81,994,305		80,832,464
	$	100,251,467	$	98,613,783	$	104,616,155	$	102,429,128

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

	Less than 12 months				12 months or longer				Total
	Gross				Gross				Gross
	Unrealized		Fair		Unrealized		Fair		Unrealized		Fair
June 30, 2017	losses		value		losses		value		losses		value
U.S. government agencies	$	13,142	$	2,749,979	$	-	$	-	$	13,142	$	2,749,979
Municipal bonds		618,977		14,273,701		-		-		618,977		14,273,701
Corporate bonds		-		-		80,504		1,919,496		80,504		1,919,496
Mortgage-backed securities		761,162		57,857,120		269,104		7,075,161		1,030,266		64,932,281
	$	1,393,281	$	74,880,800	$	349,608	$	8,994,657	$	1,742,889	$	83,875,457

	Less than 12 months				12 months or longer				Total
	Gross				Gross				Gross
	Unrealized		Fair		Unrealized		Fair		Unrealized		Fair
March 31, 2017	losses		value		losses		value		losses		value
U.S. government agencies	$	13,393	$	3,256,964	$	-	$	-	$	13,393	$	3,256,964
Municipal bonds		950,496		13,982,251		-		-		950,496		13,982,251
Corporate bonds		-		-		83,478		1,916,522		83,478		1,916,522
Mortgage-backed securities		941,183		66,953,532		285,752		7,016,746		1,226,935		73,970,278
	$	1,905,072	$	84,192,747	$	369,230	$	8,933,268	$	2,274,302	$	93,126,015