Statements of Cash Flows - USD ($)	3 Months Ended
	Sep. 30, 2015	Sep. 30, 2014
Cash Flows from Operating Activities:
Net income	$ 878,530	$ 911,221
Adjustments to reconcile net income to net cash provided by operating activities:
Excess tax benefits from share-based compensation	(15,021)	(23,074)
Stock-based compensation	30,466	13,029
Depreciation	110,199	115,911
ESOP compensation expense	113,094	111,191
Loss on disposal of assets	8	129
Deferred income tax expense	16,789	20,354
Changes in assets and liabilities:
Decrease (increase) in trade receivable, net	$ 2,575,057	(838,678)
Decrease income tax receivable		274,879
Increase in inventories, net	$ (867,509)	(14,659)
Increase in prepaid expenses and other current assets	(39,726)	(21,748)
Increase in accounts payable	97,343	742,429
Decrease in accrued salaries and wages	(45,188)	(15,486)
Decrease in vacation accrual	(38,930)	(153,112)
Decrease in ESOP payable	(19,792)	(24,375)
Decrease in other accrued expenses	(146,152)	(425,947)
Increase (decrease) in payroll and other taxes withheld and accrued	1,267	(6,544)
Increase in income taxes payable	300,707	23,074
Net cash provided by operating activities	2,951,142	688,594
Cash Flows from Investing Activities:
Additions to property, plant and equipment	(5,751)	(18,588)
Purchase of investment securities	(1,284,178)	(445,493)
Proceeds from sale/maturity of investment securities	448,900	861,371
Net cash (used in) provided by investing activities	(841,029)	397,290
Cash Flows from Financing Activities:
Dividends on common stock	$ (570,880)	(567,853)
Purchase of treasury stock		(234,834)
Proceeds from exercise of stock options	$ 13,888	9,000
Excess tax benefits from share-based compensation	15,021	23,074
Net cash used in financing activities	(541,971)	(770,613)
Increase in cash and cash equivalents	1,568,142	315,271
Cash and cash equivalents, beginning of period	8,859,405	9,556,891
Cash and cash equivalents, end of period	10,427,547	$ 9,872,162
Supplemental Schedule of Cash Flow Information:
Income taxes paid	50,000
Supplemental Schedule of Non-cash Financing Activities:
Accrual of dividends	$ 590,872