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Foreign Operations (Tables) | 12 Months Ended
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Jun. 30, 2018
Foreign Operations Tables Abstract |
Assets and net assets in foreign countries |
|  | China |  | Latvia
|  | June 30, 2018 |  | June 30, 2017 |  | June 30, 2018 |  | June 30, 2017
Assets |  | $14.7 million |  | $14.0 million |  | $6.4 million |  | $6.1 million
Net assets |  | $12.6 million |  | $12.3 milllion |  | $5.9 million |  | $6.0 million

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