Statements of Cash Flows (Unaudited) (USD $)	3 Months Ended
	Sep. 30, 2012	Sep. 30, 2011
Cash Flows From Operating Activities:
Net income	$ 1,280,718	$ 926,904
Adjustments to reconcile net income to net cash provided by operating activities:
Excess tax benefits from share-based compensation	(11,163)	(39,028)
Stock-based compensation	32,965	16,316
Depreciation	104,539	108,248
ESOP compensation expense	139,701	127,761
Loss on disposal of assets	5,288	79
Deferred income tax benefit	(32,219)	(26,320)
Changes in assets and liabilities:
(Increase) decrease in trade receivable, net	(971,552)	967,899
Increase in income taxes receivables	(40,707)	(75,875)
Increase in inventories	(267,443)	(284,141)
Decrease in prepaid expenses and other current assets	30,181	60,543
Increase in accounts payable	92,252	159,583
Increase in accrued salaries, wages and commissions	64,746	51,829
Decrease in vacation accrual	(100,451)	(37,203)
Decrease in ESOP payable	(30,750)	(35,438)
Decrease in other accrued expenses	(203,089)	(50,305)
Increase in payroll and other taxes withheld and accrued	5,742	2,639
Decrease in income taxes payable	(62,433)	(238,718)
Net cash provided by operating activities	36,325	1,634,773
Cash Flows From Investing Activities:
Additions to property, plant and equipment	(72,187)	(40,370)
Proceeds from loan receivable	10,426	10,118
Purchase of investment securities	(1,621,921)	(1,611,980)
Proceeds from maturity of investment securities	1,499,766	1,010,000
Net cash used in investing activities	(183,916)	(632,232)
Cash Flows From Financing Activities:
Sale of treasury stock	66,102	58,974
Dividends on common stock	(492,245)	(487,303)
Purchase of treasury stock	(50,566)
Proceeds from exercise of stock options	67,904	27,344
Excess tax benefits from share-based compensation	11,163	39,028
Net cash used in financing activities	(397,642)	(361,957)
(Decrease) Increase in cash and cash equivalents	(545,233)	640,584
Cash and cash equivalents, beginning of year	11,523,424	9,695,811
Cash and cash equivalents, end of year	10,978,191	10,336,395
Supplemental Schedule of Cash Flow Information:
Income taxes paid	$ 630,000	$ 710,000