CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)	3 Months Ended
	Sep. 30, 2015	Sep. 30, 2014
Operating activities:
Net loss	$ (60,100)	$ (161,300)
Adjustments to reconcile net income to net cash used in operating activities:
Loss on sale of investments	0	1,300
Loss on asset disposal	2,700	0
Depreciation and amortization	105,200	110,100
Deferred income taxes	(17,800)	(4,400)
Stock-based compensation	600	1,000
Income tax benefit of stock options exercised	0	4,900
Changes in operating assets and liabilities, net of effect of acquisition:
Accounts receivable	344,300	(38,500)
Inventories	(130,100)	26,300
Prepaid expenses and other current assets	(76,700)	(61,600)
Accounts payable	(26,500)	(31,500)
Customer advances	17,100	3,300
Accrued expenses and taxes	(203,100)	(83,900)
Other assets	0	(25,400)
Total adjustments	15,700	(98,400)
Net cash used in operating activities	(44,400)	(259,700)
Investing activities:
Redemption of investment securities, available-for-sale	0	75,000
Capital expenditures	(6,500)	(19,700)
Purchase of other intangible assets	0	(1,100)
Net cash provided by (used in) investing activities	(6,500)	54,200
Financing activities:
Line of credit proceeds	200,000	200,000
Payments of contingent consideration	(100,900)	(98,900)
Proceeds from exercise of stock options	0	18,800
Principal payments on note payable	0	(20,000)
Net cash provided by financing activities	99,100	99,900
Net increase (decrease) in cash and cash equivalents	48,200	(105,600)
Cash and cash equivalents, beginning of year	482,000	493,700
Cash and cash equivalents, end of period	530,200	388,100
Cash paid during the period for:
Income Taxes	18,500	3,500
Interest	$ 4,400	$ 1,200