Consolidated Balance Sheets - USD ($)	Jun. 30, 2016	Jun. 30, 2015
Current assets:
Cash and cash equivalents	$ 9,049,327	$ 9,623,749
Accounts receivable, less allowance for doubtful accounts of $96,868 and$126,868, respectively	3,869,427	4,481,247
Inventories, net	5,822,935	4,303,163
Prepaid expenses and other current assets	530,564	441,562
Deferred income tax		2,118,716
Total current assets	19,272,253	20,968,437
Property, plant and equipment, net of accumulated amortization and depreciation of $6,976,282 and $5,672,287, respectively	2,492,815	2,056,600
Patents, net of accumulated amortization of $885,394 and $791,551, respectively	604,916	566,028
Goodwill	1,701,094	1,701,094
Intangible and other assets	266,603	388,377
Deferred income tax	3,394,690	773,712
Total assets	27,732,371	26,454,248
Current liabilities:
Accounts payable	1,402,797	1,147,414
Accrued expenses and other current liabilities	1,887,337	1,532,094
Total current liabilities	3,290,134	2,679,508
Deferred lease liability	9,262
Deferred income	31,685	20,395
Total liabilities	3,331,081	2,699,903
Commitments and contingencies (Footnote 7)
Shareholders' equity:
Common stock, $.01 par value-shares authorized 20,000,000; 7,948,234 and 7,869,095 shares issued and 7,809,385 and 7,744,113 shares outstanding, respectively	79,482	78,691
Additional paid-in capital	32,502,521	30,531,129
Accumulated deficit	(7,081,361)	(5,909,215)
Treasury stock, at cost, 138,849 and 124,982 shares, respectively	(1,099,352)	(946,260)
Total shareholders' equity	24,401,290	23,754,345
Total liabilities and shareholders' equity	$ 27,732,371	$ 26,454,248