Statements of Cash Flows - USD ($)	6 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Cash Flows from Operating Activities:
Net income	$ 1,492,957	$ 2,130,303
Adjustments to reconcile net income to net cash provided by operating activities:
Excess tax benefits from share-based compensation	(15,021)	(26,835)
Stock-based compensation	52,249	26,058
Depreciation	218,021	227,753
ESOP compensation expense	224,175	208,678
Loss on disposal of assets	147	233
Deferred income tax expense	31,600	40,707
Changes in assets and liabilities:
Decrease (increase) in trade receivable, net	2,656,012	(192,316)
(Increase) decrease in income taxes receivable	(207,551)	677,238
Increase in inventories, net	(121,508)	(912,542)
Decrease in prepaid expenses and other current assets	100,561	115,436
(Decrease) increase in accounts payable	(371,694)	150,252
Decrease in accrued salaries and wages	(89,507)	(240,224)
Decrease in vacation accrual	(43,308)	(160,543)
Decrease in ESOP payable	(59,375)	(48,750)
Decrease in other accrued expenses	(100,541)	(380,033)
Increase (decrease) in payroll and other taxes withheld	38,595	(5,829)
Increase in income taxes payable	12,305	26,835
Net cash provided by operating activities	3,818,117	1,636,421
Cash Flows from Investing Activities:
Additions to property, plant and equipment	(82,341)	(54,050)
Purchase of investment securities	(2,347,595)	(1,427,174)
Proceeds from sale/maturity of investment securities	1,282,686	1,942,735
Net cash (used in) provided by investing activities	(1,147,250)	461,511
Cash Flows from Financing Activities:
Dividends on common stock	(1,710,215)	(1,132,317)
Purchase of treasury stock	(355,418)	(320,504)
Proceeds from exercise of stock options	67,558	9,000
Excess tax benefits from share-based compensation	15,021	26,835
Net cash used in financing activities	(1,983,054)	(1,416,986)
Increase in cash and cash equivalents	687,813	680,946
Cash and cash equivalents, beginning of period	8,859,405	9,556,891
Cash and cash equivalents, end of period	9,547,218	$ 10,237,837
Supplemental Schedule of Cash Flow Information:
Income taxes paid	$ 786,000