Statements of Changes in Stockholders' Equity - USD ($)	Common Stock [Member]	Capital in Excess of Par Value [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Retained Earnings [Member]	Treasury Stock [Member]	Unearned ESOP Shares [Member]	Total
Balance, beginning at Jun. 30, 2015	$ 1,009,958	$ 16,785,604	$ (4,386)	$ 21,865,951	$ (7,582,296)	$ (1,143,957)	$ 30,930,874
Balance, beginning, shares at Jun. 30, 2015	2,362,687				667,187		2,362,687
Net income				3,175,801			$ 3,175,801
Other comprehensive income (loss), net of tax			2,978				2,978
Total comprehensive income							3,178,779
Stock options exercised		162,488			$ 134,475		$ 296,963
Stock options exercised, shares	16,300				(16,300)		16,300
Stock option expense		97,045					$ 97,045
Dividends paid on common stock				(2,256,018)			(2,256,018)
Tax effect of stock options exercised		17,141					17,141
Tax effect of dividends on unallocated ESOP shares				35,204			35,204
Purchase of treasury stock					$ (355,418)		(355,418)
Purchase of treasury stock, shares	(14,303)				14,303
Reduction of unearned ESOP shares		190,794				252,874	443,668
Balance, ending at Jun. 30, 2016	$ 1,009,958	17,253,072	(1,408)	22,820,938	$ (7,803,239)	(891,083)	$ 32,388,238
Balance, ending, common shares at Jun. 30, 2016	2,364,684				665,190		2,364,684
Net income				1,135,736			$ 1,135,736
Other comprehensive income (loss), net of tax			(2,191)				(2,191)
Total comprehensive income							1,133,545
Stock options exercised		82,442			$ 68,475		$ 150,917
Stock options exercised, shares	8,300				(8,300)		8,300
Stock option expense		129,167					$ 129,167
Dividends paid on common stock				(2,307,445)			(2,307,445)
Tax effect of stock options exercised		9,070					9,070
Tax effect of dividends on unallocated ESOP shares				20,967			20,967
Purchase of treasury stock					$ (44,335)		(44,335)
Purchase of treasury stock, shares	(1,663)				1,663
Reduction of unearned ESOP shares		176,584				240,835	417,419
Balance, ending at Jun. 30, 2017	$ 1,009,958	$ 17,650,335	$ (3,599)	$ 21,670,196	$ (7,779,099)	$ (650,248)	$ 31,897,543
Balance, ending, common shares at Jun. 30, 2017	2,371,321				658,553		2,371,321