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Income Taxes - Narrative (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2019 | Dec. 31, 2018 | Oct. 31, 2019
Income Tax Examination [Line Items] |  |  |  |  |
Income tax provision | $ 2,113 | $ 4,520 | $ 10,681 | $ 10,043 |
Effective tax rate (as a percent) | 7.90% | 18.40% | 17.60% | 19.80% |
Unrecognized tax benefits that would impact effective tax rate, if recognized | $ 27,400 |  | $ 27,400 |  |
Interest and penalties relating to unrecognized tax benefits | 1,600 |  | 1,600 |  |
Decrease in unrecognized tax benefits is reasonably possible | $ 3,200 |  | $ 3,200 |  |
Taiwan Tax Authority |  |  |  |  |
Income Tax Examination [Line Items] |  |  |  |  |
Income tax examination, increase (decrease) liability |  |  |  |  | $ 1,600

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