Short-term and Long-term Debt - Schedule of Short-Term Debt (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Jun. 30, 2020
Short-term Debt [Line Items]
Short-term debt	$ 24,047	$ 23,704
Long-term debt, net of debt issuance costs	11,980	5,697
Total debt	36,027	29,401
Short-term debt and current portion of long-term debt	24,047	23,704
Debt, Non-current	11,980	5,697
Secured debt | CTBC Bank term loan, due June 4, 2030 | Term loan
Short-term Debt [Line Items]
Long-term debt, net of debt issuance costs	$ 11,980	$ 5,697