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Income Taxes (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Mar. 31, 2019 | Mar. 31, 2018 | Mar. 31, 2019 | Mar. 31, 2018 | Oct. 31, 2019
Income Tax Examination [Line Items] |  |  |  |  |
Income tax provision | $ 497 | $ 4,159 | $ 10,540 | $ 25,725 |
Effective tax rate | 4.30% | 21.40% | 16.90% | 53.50% |
Unrecognized tax benefits that would impact effective tax rate, if recognized | $ 26,300 |  | $ 26,300 |  |
Tax Cuts and Jobs Act of 2017, U.S. deferred tax assets and liabilities write-down |  |  | 12,900 |  |
Tax Cuts and Jobs Act of 2017, Transition tax for accumulated foreign earnings |  |  | 2,800 |  |
Interest and penalties relating to unrecognized tax benefits | 1,500 |  | 1,500 |  |
Decrease in unrecognized tax benefits reasonably possible | $ 4,000 |  | $ 4,000 |  |
Subsequent event | Taiwan Tax Authority |  |  |  |  |
Income Tax Examination [Line Items] |  |  |  |  |
Income tax examination, increase liability |  |  |  |  | $ 1,600

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