CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $)	9 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Operating activities:
Net income (loss)	$ (280,300)	$ 77,500
Adjustments to reconcile net income to net cash used in operating activities:
Loss on sale of investments	4,400	17,300
Depreciation and amortization	327,200	154,000
Deferred income taxes	(37,300)	(11,400)
Stock-based compensation	10,200	14,900
Income tax benefit of stock options exercised	4,900	0
Changes in operating assets and liabilities, net of effect of acquisition:
Accounts receivable	(72,900)	(319,400)
Inventories	(312,100)	(399,700)
Prepaid expenses and other current assets	11,900	(66,900)
Accounts payable	(48,600)	77,900
Customer advances	235,400	256,000
Accrued expenses and taxes	(13,500)	19,900
Other assets	(24,200)	0
Total adjustments	85,400	(257,400)
Net cash used in operating activities	(194,900)	(179,900)
Investing activities:
Cash paid for asset acquisition	0	(700,000)
Redemption of investment securities, available-for-sale	127,000	450,900
Purchase of investment securities, available for sale	(3,800)	(25,000)
Capital expenditures	(56,500)	(47,100)
Purchase of other intangible assets	(4,400)	(2,900)
Net cash provided by (used in) investing activities	62,300	(324,100)
Financing activities:
Line of credit proceeds	250,000	150,000
Line of credit repayments	(150,000)	(70,000)
Payments of contingent consideration	(98,900)	(1,100)
Proceeds from exercise of stock options	18,800	6,700
Cash dividend declared and paid	0	(107,400)
Principal payments on note payable	(26,700)	(58,500)
Net cash used in financing activities	(6,800)	(80,300)
Net decrease in cash and cash equivalents	(139,400)	(584,300)
Cash and cash equivalents, beginning of year	493,700	927,300
Cash and cash equivalents, end of period	354,300	343,000
Cash paid during the period for:
Income Taxes	3,500	152,100
Interest	$ 4,300	$ 2,400