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Foreign Operations (Tables)
 6 Months Ended
Dec. 31, 2019
Foreign Currency [Abstract]  
Summary of foreign assets
  China   Latvia
  December 31, 2019   June 30, 2019   December 31, 2019   June 30, 2019
Assets  $16.5 million    $16.9 million    $9.5 million    $8.2 million
Net assets  $13.9 million    $14.5 million    $8.2 million    $7.8 million