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Note H - Segment Information (Details) - Net Sales by Geographic Region (USD $) | 3 Months Ended
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Sep. 30, 2014 | Sep. 30, 2013
Note H - Segment Information (Details) - Net Sales by Geographic Region [Line Items] |  |
Net sales | $ 18,695,000 | $ 17,155,000
UNITED STATES |  |
Note H - Segment Information (Details) - Net Sales by Geographic Region [Line Items] |  |
Net sales | 9,710,000 | 9,488,000
Markets Outside the United States [Member] |  |
Note H - Segment Information (Details) - Net Sales by Geographic Region [Line Items] |  |
Net sales | $ 8,985,000 | $ 7,667,000

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Balance Type: | na
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- Definition Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 1 -Article 5 + Details
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