Statements of Cash Flows (Unaudited) (USD $)	6 Months Ended
	Dec. 31, 2011	Dec. 31, 2010
Cash Flows From Operating Activities:
Net income	$ 1,997,767	$ 1,403,286
Adjustments to reconcile net income to net cash provided by operating activities:
Excess tax benefits from share-based compensation	(40,801)	(10,939)
Stock-based compensation	42,425	37,639
Depreciation	215,042	228,767
ESOP compensation expense	251,355	235,408
Loss on disposal of assets	20,624	15
Deferred income tax benefit	(55,321)	18,398
Changes in assets and liabilities:
Decrease in trade receivable, net	1,650,901	1,968,127
(Increase) in income taxes receivables		(64,986)
(Increase) in ESOP receivable due to dividends on unallocated shares		(24,383)
(Increase) decrease in inventories	(244,894)	149,708
Decrease (increase) in prepaid expenses and other current assets	123,295	(2,172)
Increase (decrease) in accounts payable	56,217	(312,142)
(Decrease) increase in accrued salaries, wages and commissions	(146,279)	5,150
Decrease in vacation accrual	(19,957)	(31,293)
Decrease in ESOP payable	(228,375)	(235,408)
Increase (decrease) in other accrued expenses	65,673	(77,732)
Increase (decrease) in payroll and other taxes withheld and accrued	766	(3,758)
Decrease in income taxes payable	(170,898)	(3,854)
Net cash provided by operating activities	3,517,540	3,279,831
Cash Flows From Investing Activities:
Additions to property, plant and equipment	(162,438)	(543,613)
Proceeds from loan receivable	20,313	11,546
Purchase of investment securities	(2,700,343)	(2,498,000)
Maturity of investment securities	1,460,288	5,712,000
Net cash (used in) provided by investing activities	(1,382,180)	2,681,933
Cash Flows From Financing Activities:
Sale of treasury stock	58,975	12,081
Dividends on common stock	(3,142,847)	(3,115,472)
Purchase of treasury stock	(103,346)	(83,662)
Proceeds from exercise of stock options	51,378	161,688
Excess tax benefits from share-based compensation	40,801	10,939
Net cash used in financing activities	(3,095,039)	(3,014,426)
(Decrease) increase in cash and cash equivalents	(959,679)	2,947,338
Cash and cash equivalents, beginning of period	9,695,811	4,475,066
Cash and cash equivalents, end of period	8,736,132	7,422,404
Supplemental Schedule of Cash Flow Information:
Income taxes paid	$ 1,018,000	$ 601,000