CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $)	3 Months Ended
	Sep. 30, 2013	Sep. 30, 2012
Operating activities:
Net income (loss)	$ 2,100	$ (62,200)
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities
Depreciation and amortization	44,200	44,300
Deferred income taxes	4,000	5,100
Stock-based compensation	800	3,400
Changes in operating assets and liabilities:
Accounts receivable	100	(15,600)
Inventories	(77,800)	(134,600)
Prepaid expenses and other current assets	(46,900)	17,400
Other assets		100
Accounts payable	5,000	63,900
Customer advances	27,500	102,400
Accrued expenses and taxes	(118,100)	(4,400)
Total adjustments	(161,200)	82,000
Net cash provided by (used in) operating activities	(159,100)	19,800
Investing activities:
Purchase of investment securities, available for sale	(5,700)	(2,300)
Capital expenditures	(8,500)	(17,400)
Purchases of intangible assets	(1,900)	(2,100)
Net cash used in investing activities	(16,100)	(21,800)
Financing activities:
Principal payments on note payable	(19,400)	(18,700)
Net decrease in cash and cash equivalents	(194,600)	(20,700)
Cash and cash equivalents, beginning of year	927,300	769,300
Cash and cash equivalents, end of period	732,700	748,600
Cash paid during the period for:
Income Taxes	100,000
Interest	$ 800	$ 1,400