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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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Amount of decrease reasonably possible in the next twelve months for the unrecognized tax benefit.

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