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Note F - Economic Dependency (Tables) | 3 Months Ended
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Sep. 30, 2018
Supplier Concentration Risk [Member] |
Notes Tables |
Schedules of Concentration of Risk, by Risk Factor [Table Text Block] |
|  | Three months Ended September 30, |
|  | 2018 |  |  | 201 7 |
|  | Raw Material Purchases by Supplier |  |  | % of Total Raw Material Purchases |  |  | Raw Material Purchases by Supplier |  |  | % of Total Raw Material Purchases |
Supplier 1 |  | $ | 3,107 |  |  |  | 15 | % |  |  | (a | ) |  |  | (a | )
Supplier 2 |  |  | (a | ) |  |  | (a | ) |  |  | 1,967 |  |  |  | 14 | %
|  | $ | 3,107 |  |  |  | 15 | % |  | $ | 1,967 |  |  |  | 14 | %
Customer Concentration Risk [Member] |
Notes Tables |
Schedules of Concentration of Risk, by Risk Factor [Table Text Block] |
|  | Three months Ended September 30, |
|  | 2018 |  |  | 2017 |
Customer 1 |  | $ | 21,078 |  |  | $ | 13,157 |
Customer 2 |  |  | 3,729 |  |  |  | 3,161 |
|  | $ | 24,807 |  |  | $ | 16,318 |

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