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Condensed Consolidated Statements Of Income (USD $)
3 Months Ended
Sep. 30, 2011
Sep. 30, 2010
Condensed Consolidated Statements Of Income [Abstract]  
Net sales$ 6,030,000$ 5,829,000
Cost of sales3,701,0003,645,000
Gross profit2,329,0002,184,000
Operating expenses:  
Selling expenses374,000424,000
General and administrative expenses836,000764,000
Research and development costs662,000591,000
Total operating expenses1,872,0001,779,000
Income from operations457,000405,000
Other income (expense):  
Interest expense, net(10,000)(57,000)
Total other income (expense)(10,000)(57,000)
Income before provision for income taxes447,000348,000
Provision for income taxes1,0006,000
Net income$ 446,000$ 342,000
Net income per share:  
Basic$ 0.14$ 0.11
Diluted$ 0.14$ 0.10
Weighted average shares outstanding - basic3,272,3503,251,850
Weighted average shares outstanding - diluted3,280,0453,263,366