Statements of Cash Flows (Unaudited) (USD $)	9 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Cash Flows From Operating Activities:
Net income	$ 3,260,630	$ 2,415,317
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	68,499	54,374
Depreciation	321,144	349,723
ESOP compensation expense	376,251	361,941
Loss on disposal of assets	21,297	15
Deferred income tax	(84,227)	27,751
Changes in assets and liabilities:
Decrease in trade receivable, net	2,797,157	1,768,073
Increase in inventories	(849,949)	(434,354)
(Increase) decrease in prepaid expenses and other current assets	(14,003)	6,525
Increase (decrease) in accounts payable	29,069	(565,307)
(Decrease) increase in accrued salaries, wages and commissions	(107,168)	74,159
Increase in vacation accrual	52,408	23,082
Decrease in ESOP payable	(263,812)	(300,104)
Increase (decrease) in other accrued expenses	16,698	(75,445)
Increase (decrease) in payroll and other taxes withheld and accrued	1,443	(2,613)
(Decrease) increase in income taxes payable	(60,673)	115,052
Net cash provided by operating activities	5,523,963	3,807,250
Cash Flows From Investing Activities:
Additions to property, plant and equipment	(230,259)	(590,503)
Payment for loan receivable		(125,000)
Proceeds from loan receivable	30,584	18,200
Purchase of investment securities	(3,663,325)	(2,690,000)
Maturity of investment securities	2,122,505	6,960,000
Net cash (used in) provided by investing activities	(1,740,495)	3,572,697
Cash Flows From Financing Activities:
Sale of treasury stock	58,975	12,081
Dividends on common stock	(3,629,785)	(3,598,589)
Purchase of treasury stock	(143,731)	(575,246)
Proceeds from exercise of stock options	65,050	267,436
Excess tax benefits from share-based compensation	40,801	10,939
Net cash used in financing activities	(3,608,690)	(3,883,379)
Increase in cash and cash equivalents	174,778	3,496,568
Cash and cash equivalents, beginning of period	9,695,811	4,475,066
Cash and cash equivalents, end of period	9,870,589	7,971,634
Supplemental Schedule of Cash Flow Information:
Income taxes paid	$ 1,436,000	$ 806,000