Statements of Cash Flows (Unaudited) (USD $)	9 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Cash Flows From Operating Activities:
Net income	$ 1,866,089	$ 3,267,725
Adjustments to reconcile net income to net cash provided by operating activities:
Excess tax benefits from share-based compensation	(26,242)	(16,509)
Stock-based compensation	77,721	87,777
Depreciation	333,354	312,254
ESOP compensation expense	427,987	401,554
Loss on disposal of assets	13	6,152
Deferred income tax	48,130	(97,969)
Changes in assets and liabilities:
Decrease (increase) in trade receivable, net	2,401,748	(367,471)
Increase in income taxes receivables	(188,276)	(228,866)
Increase in inventories, net	(567,843)	(1,155,855)
Decrease (increase) in prepaid expenses and other current assets	86,674	(75,124)
Decrease in accounts payable	32,059	27,047
Decrease in accrued salaries, wages and commissions	(17,415)	(113,598)
Decrease in vacation accrual	(1,295)	(34,148)
Decrease in ESOP payable	(204,166)	(235,750)
(Decrease) increase in other accrued expenses	(455,801)	85,538
Increase in payroll and other taxes withheld and accrued	9,087	6,180
Decrease in income taxes payable	(404,221)	(57,087)
Net cash provided by operating activities	3,417,603	1,811,850
Cash Flows From Investing Activities:
Additions to property, plant and equipment	(659,762)	(203,500)
Proceeds from loan receivable	25,194	31,515
Purchase of investment securities	(2,311,639)	(5,002,595)
Proceeds from sale/maturity of investment securities	1,535,000	4,508,189
Net cash used in investing activities	(1,411,207)	(666,391)
Cash Flows From Financing Activities:
Sale of treasury stock		66,102
Dividends on common stock	(3,918,205)	(3,804,060)
Purchase of treasury stock		(150,020)
Proceeds from exercise of stock options	257,465	417,656
Excess tax benefits from share-based compensation	26,242	16,509
Net cash used in financing activities	(3,634,498)	(3,453,813)
Decrease in cash and cash equivalents	(1,628,102)	(2,308,354)
Cash and cash equivalents, beginning of period	9,888,628	11,523,424
Cash and cash equivalents, end of period	8,260,526	9,215,070
Supplemental Schedule of Cash Flow Information:
Income taxes paid	$ 1,257,200	$ 1,640,000