Statements of Cash Flows (Unaudited) (USD $)	3 Months Ended
Sep. 30, 2011	Sep. 30, 2010
Cash Flows From Operating Activities:
Net income	$ 926,904	$ 753,539
Adjustments to reconcile net income to net cash provided by operating activities:
Excess tax benefits from share-based compensation	(39,028)	(4,488)
Stock-based compensation	16,316	16,040
Depreciation	108,248	113,645
ESOP compensation expense	127,761	107,033
Loss on disposal of assets	79
Deferred income tax benefit	(26,320)	9,452
Changes in assets and liabilities:
Decrease in trade receivable, net	967,899	1,458,295
Increase in income taxes receivables	(75,875)	(88,991)
Increase in inventories	(284,141)	(248,205)
Decrease (increase) in prepaid expenses and other current assets	60,543	(49,417)
Increase (decrease) in accounts payable	159,583	(426,338)
Increase in accrued salaries, wages and commissions	51,829	32,038
Decrease in vacation accrual	(37,203)	(34,781)
Decrease in ESOP payable	(35,438)	(40,312)
Decrease in other accrued expenses	(50,305)	(143,458)
Increase (decrease) in payroll and other taxes withheld and accrued	2,639	(4,367)
Decrease in income taxes payable	(238,718)	(10,305)
Net cash provided by operating activities	1,634,773	1,439,380
Cash Flows From Investing Activities:
Additions to property, plant and equipment	(40,370)	(107,247)
Proceeds from loan receivable	10,118	4,600
Purchase of investment securities	(1,611,980)	(1,778,000)
Maturity of investment securities	1,010,000	4,128,000
Net cash (used in) provided by investing activities	(632,232)	2,247,353
Cash Flows From Financing Activities:
Sale of treasury stock	58,974	12,081
Dividends on common stock	(487,303)	(481,800)
Proceeds from exercise of stock options	27,344	79,660
Excess tax benefits from share-based compensation	39,028	4,488
Net cash used in financing activities	(361,957)	(385,571)
Increase in cash and cash equivalents	640,584	3,301,162
Cash and cash equivalents, beginning of period	9,695,811	4,475,066
Cash and cash equivalents, end of period	10,336,395	7,776,228
Supplemental Schedule of Cash Flow Information:
Income taxes paid	$ 710,000	$ 386,000

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Includes currency on hand as well as demand deposits with banks or financial institutions. It also includes other kinds of accounts that have the general characteristics of demand deposits in that the Entity may deposit additional funds at any time and also effectively may withdraw funds at any time without prior notice or penalty. Cash equivalents, excluding items classified as marketable securities, include short-term, highly liquid investments that are both readily convertible to known amounts of cash, and so near their maturity that they present minimal risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify under that definition. Original maturity means original maturity to the entity holding the investment. For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three years ago does not become a cash equivalent when its remaining maturity is three months. Compensating balance arrangements that do not legally restrict the withdrawal or usage of cash amounts may be reported as Cash and Cash Equivalents, while legally restricted deposits held as compensating balances against borrowing arrangements, contracts entered into with others, or company statements of intention with regard to particular deposits are not generally reported as cash and cash equivalents. Includes cash and cash equivalents associated with the entity's continuing operations. Excludes cash and cash equivalents associated with the disposal group (and discontinued operation).

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Reductions in the entity's income taxes that arise when compensation cost (from non-qualified share-based compensation) recognized on the entity's tax return exceeds compensation cost from equity-based compensation recognized in financial statements. This element represents the cash inflow reported in the enterprise's financing activities.

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Reductions in the entity's income taxes that arise when compensation cost (from non-qualified equity-based compensation) recognized on the entity's tax return exceeds compensation cost from equity-based compensation recognized in financial statements. This element reduces net cash provided by operating activities.

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The gains (losses) included in earnings resulting from the sale or disposal of tangible assets. This item does not include any gain (loss) recognized on the sale of oil and gas property or timber property.

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