Statements of Cash Flows - USD ($)	12 Months Ended
Jun. 30, 2017	Jun. 30, 2016
Cash Flows from Operating Activities:
Net income	$ 1,135,736	$ 3,175,801
Adjustments to reconcile net income to net cash provided by operating activities:
Excess tax benefits from share-based compensation	(9,070)	(17,141)
Tax effect of dividends on unallocated ESOP shares	20,967	35,204
Stock-based compensation	129,167	97,045
Depreciation	435,557	434,401
ESOP compensation expense	417,419	443,668
Loss on disposal of assets	4	147
Deferred income tax (benefit) expense	(46,488)	57,735
Changes in assets and liabilities:
Decrease in trade receivables, net	1,557,851	1,736,937
Decrease (increase) in income tax receivable	218,189	(314,874)
Decrease in inventories, net	1,054,870	852,216
Increase in prepaid expenses and other current assets	(7,618)	(7,748)
Increase (decrease) in accounts payable	1,697,328	(423,325)
(Decrease) increase in accrued salaries and wages	(185,865)	25,523
(Decrease) increase in vacation accrual	(48,562)	13,928
Increase (decrease) in other accrued expenses	53,652	(352,186)
(Decrease) increase in payroll and other taxes withheld	(2,414)	2,271
Net cash provided by operating activities	6,420,723	5,759,602
Cash Flows from Investing Activities:
Additions to property, plant and equipment	(352,132)	(284,210)
Purchase of investment securities	(8,922,097)	(4,930,146)
Proceeds from sale/maturity of investment securities	5,071,818	3,514,997
Net cash used in investing activities	(4,202,411)	(1,699,359)
Cash Flows from Financing Activities:
Dividends paid on common stock	(2,307,445)	(2,846,690)
Purchase of treasury stock	(44,335)	(355,418)
Proceeds from exercise of stock options	150,917	296,963
Excess tax benefits from share-based compensation	9,070	17,141
Net cash used in financing activities	(2,191,793)	(2,888,004)
Increase in cash and cash equivalents	26,519	1,172,239
Cash and cash equivalents, beginning of the year	10,031,644	8,859,405
Cash and cash equivalents, end of the year	10,058,163	10,031,644
Supplemental Schedule of Cash Flow Information:
Income taxes paid	$ 323,000	$ 1,511,000

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