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Note D - Other Comprehensive Loss (Details Textual) - USD ($) | 3 Months Ended
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Sep. 30, 2018 | Sep. 30, 2017
Revenues, Total | $ 36,532,000 | $ 28,074,000
Nonoperating Income (Expense), Total | 497,000 | 108,000
Reclassification out of Accumulated Other Comprehensive Income [Member] |  |
Revenues, Total | (41,000) | (422,000)
Nonoperating Income (Expense), Total | $ 487,000 | $ 244,000

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