Short-term Debt - Schedule of Short-Term Debt (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Jun. 30, 2019
Short-term Debt [Line Items]
Short-term debt	$ 33,158	$ 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	23,158	22,531
Line of Credit | Revolving Credit Facility
Short-term Debt [Line Items]
Short-term debt	10,000	1,116
Line of Credit | Revolving Credit Facility | CTBC Credit Facility
Short-term Debt [Line Items]
Short-term debt	$ 10,000	$ 0