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Short-term Debt - Schedule of Short-Term Debt (Details) - USD ($)
$ in Thousands
Dec. 31, 2019
Jun. 30, 2019
Short-term Debt [Line Items]    
Short-term debt $ 23,250 $ 23,647
Revolving Credit Facility | Line of credit | Bank of America    
Short-term Debt [Line Items]    
Short-term debt 0 1,116
Secured debt | Term loan | CTBC Credit Facility    
Short-term Debt [Line Items]    
Short-term debt $ 23,250 $ 22,531