Income Taxes	9 Months Ended
Mar. 31, 2019
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes The Company recorded provisions for income taxes of $0.5 million and $10.5 million for three and nine months ended March 31, 2019, respectively, and $4.2 million and $25.7 million for the three and nine months ended March 31, 2018, respectively. The effective tax rate was 4.3% and 16.9% for the three and nine months ended March 31, 2019, respectively, and 21.4% and 53.5% for the three and nine months ended March 31, 2018, respectively. The effective tax rates for the three and nine months ended March 31, 2019 were lower than the statutory tax rate of 21%, primarily due to releases of unrecognized tax benefits as a result of lapse of statute of limitations. The effective tax rates for the three and nine months ended March 31, 2018 were higher than that for the three and nine months ended March 31, 2019, primarily due to a one-time $12.9 million write down of U.S. deferred tax assets and liabilities, and a one-time transition tax of $2.8 million, as a result of the 2017 Tax Reform Act. As of March 31, 2019, the Company had a liability for gross unrecognized tax benefits of $26.3 million, substantially all of which, if recognized, would affect the Company's effective tax rate. During the nine months ended March 31, 2019, there were no material changes in the total amount of the liability for gross unrecognized tax benefits. The Company’s policy is to include interest and penalties related to unrecognized tax benefits within the provision for taxes on the condensed consolidated statements of operations. As of March 31, 2019, the Company had accrued $1.5 million of interest and penalties relating to unrecognized tax benefits. In December 2017, the U.S. federal government enacted the 2017 Tax Reform Act. The 2017 Tax Reform Act reduced the U.S. federal corporate income tax rate from 35% to 21% effective January 1, 2018 and created a one-time transition tax on foreign earnings of U.S. subsidiaries that were not previously subject to U.S. income tax. Under U.S. GAAP, changes in tax rates and tax law are accounted for in the period of enactment and deferred tax assets and liabilities are measured at the enacted tax rate. As a result, the Company has completed its analysis and recorded a one-time $12.9 million, net write down of its U.S. deferred tax assets and liabilities resulting from the U.S. federal corporate income tax rate decrease from 35% to 21%, and a one-time transition tax of $2.8 million, in the Company's income tax provision for the fiscal year ended June 30, 2018. The Company expects further guidance may be forthcoming from the federal and state tax agencies, which could result in additional impacts. The 2017 Tax Reform Act also creates a new requirement that Global Intangible Low-Taxed Income (“GILTI”) earned by controlled foreign corporations (“CFCs”) that must be included currently in the gross income of a CFC’s U.S. stockholder starting in the tax year that begins after 2017. The tax impact from GILTI will be recorded in the Company's income tax provision for the fiscal year ended June 30, 2019, net of foreign tax credit, and will not be material to the Company's income tax provision for the fiscal year ended June 30, 2019. Under U.S. GAAP, the Company is allowed to make an accounting policy choice of either (i) treating taxes due on future U.S. inclusions in taxable income related to GILTI as a current-period expense when incurred (the “period cost method”) or (ii) factoring such amounts into a company’s measurement of its deferred taxes. The Company's selection of an accounting policy for the fiscal year ended June 30, 2019 with respect to the GILTI tax rules is to treat GILTI tax as a current period expense under the period cost method. Under the 2017 Tax Reform Act, starting on July 1, 2018, the company is no longer subject to federal income tax on earnings remitted from our foreign subsidiaries. The Company previously asserted that all of its foreign undistributed earnings were indefinitely reinvested. As a result of the 2017 Tax Reform Act, the Company has determined that its foreign undistributed earnings are indefinitely reinvested except for Netherlands. The Company may repatriate certain foreign earnings from Netherlands that have been previously taxed in the U.S. The tax impact of such repatriation is estimated to be immaterial. In October 2019, the Taiwan tax authority completed its audit in Taiwan for fiscal year 2018 and proposed a transfer pricing adjustment on the Company which resulted in additional tax liability of $1.6 million. The Company accepted the proposed adjustment in October 2019 and intends to pay the $1.6 million tax liability in January 2020. The impact of this adjustment on the income statement will be offset by the recognition of previously unrecognized tax benefits related to the fiscal year audited in the period in which the proposed adjustment was accepted. The Company believes that it has adequately provided reserves for all uncertain tax positions; however, amounts asserted by tax authorities could be greater or less than the Company’s current position. Accordingly, the Company’s provision on federal, state and foreign tax related matters to be recorded in the future may change as revised estimates are made as or the underlying matters are settled or otherwise resolved. The federal statute of limitations remains open in general for tax years ended June 30, 2016 through 2019. Various states statute of limitations remain open in general for tax years ended June 30, 2015 through 2019. Certain statutes of limitations in major foreign jurisdictions remain open in general for the tax years ended June 30, 2013 through 2019. The Company does not expect its unrecognized tax benefits to change materially over the next 12 months, except for the reductions arising from the lapse of the statute of limitations. It is reasonably possible that our gross unrecognized tax benefits will decrease by approximately $4.0 million in the next 12 months, primarily due to the lapse of the statute of limitations and settlement with the Tax Authorities. These adjustments, if recognized, would positively impact our effective tax rate, and would be recognized as additional tax benefits.

Income Taxes

The Company recorded provisions for income taxes of $0.5 million and $10.5 million for three and nine months ended March 31, 2019, respectively, and $4.2 million and $25.7 million for the three and nine months ended March 31, 2018, respectively. The effective tax rate was 4.3% and 16.9% for the three and nine months ended March 31, 2019, respectively, and 21.4% and 53.5% for the three and nine months ended March 31, 2018, respectively. The effective tax rates for the three and nine months ended March 31, 2019 were lower than the statutory tax rate of 21%, primarily due to releases of unrecognized tax benefits as a result of lapse of statute of limitations. The effective tax rates for the three and nine months ended March 31, 2018 were higher than that for the three and nine months ended March 31, 2019, primarily due to a one-time $12.9 million write down of U.S. deferred tax assets and liabilities, and a one-time transition tax of $2.8 million, as a result of the 2017 Tax Reform Act.

As of March 31, 2019, the Company had a liability for gross unrecognized tax benefits of $26.3 million, substantially all of which, if recognized, would affect the Company's effective tax rate. During the nine months ended March 31, 2019, there were no material changes in the total amount of the liability for gross unrecognized tax benefits. The Company’s policy is to include interest and penalties related to unrecognized tax benefits within the provision for taxes on the condensed consolidated statements of operations. As of March 31, 2019, the Company had accrued $1.5 million of interest and penalties relating to unrecognized tax benefits.

In December 2017, the U.S. federal government enacted the 2017 Tax Reform Act. The 2017 Tax Reform Act reduced the U.S. federal corporate income tax rate from 35% to 21% effective January 1, 2018 and created a one-time transition tax on foreign earnings of U.S. subsidiaries that were not previously subject to U.S. income tax. Under U.S. GAAP, changes in tax rates and tax law are accounted for in the period of enactment and deferred tax assets and liabilities are measured at the enacted tax rate. As a result, the Company has completed its analysis and recorded a one-time $12.9 million, net write down of its U.S. deferred tax assets and liabilities resulting from the U.S. federal corporate income tax rate decrease from 35% to 21%, and a one-time transition tax of $2.8 million, in the Company's income tax provision for the fiscal year ended June 30, 2018. The Company expects further guidance may be forthcoming from the federal and state tax agencies, which could result in additional impacts.

The 2017 Tax Reform Act also creates a new requirement that Global Intangible Low-Taxed Income (“GILTI”) earned by controlled foreign corporations (“CFCs”) that must be included currently in the gross income of a CFC’s U.S. stockholder starting in the tax year that begins after 2017. The tax impact from GILTI will be recorded in the Company's income tax provision for the fiscal year ended June 30, 2019, net of foreign tax credit, and will not be material to the Company's income tax provision for the fiscal year ended June 30, 2019.

Under U.S. GAAP, the Company is allowed to make an accounting policy choice of either (i) treating taxes due on future U.S. inclusions in taxable income related to GILTI as a current-period expense when incurred (the “period cost method”) or (ii) factoring such amounts into a company’s measurement of its deferred taxes. The Company's selection of an accounting policy for the fiscal year ended June 30, 2019 with respect to the GILTI tax rules is to treat GILTI tax as a current period expense under the period cost method.

Under the 2017 Tax Reform Act, starting on July 1, 2018, the company is no longer subject to federal income tax on earnings remitted from our foreign subsidiaries. The Company previously asserted that all of its foreign undistributed earnings were indefinitely reinvested. As a result of the 2017 Tax Reform Act, the Company has determined that its foreign undistributed earnings are indefinitely reinvested except for Netherlands. The Company may repatriate certain foreign earnings from Netherlands that have been previously taxed in the U.S. The tax impact of such repatriation is estimated to be immaterial.

In October 2019, the Taiwan tax authority completed its audit in Taiwan for fiscal year 2018 and proposed a transfer pricing adjustment on the Company which resulted in additional tax liability of $1.6 million. The Company accepted the proposed adjustment in October 2019 and intends to pay the $1.6 million tax liability in January 2020. The impact of this adjustment on the income statement will be offset by the recognition of previously unrecognized tax benefits related to the fiscal year audited in the period in which the proposed adjustment was accepted.

The Company believes that it has adequately provided reserves for all uncertain tax positions; however, amounts asserted by tax authorities could be greater or less than the Company’s current position. Accordingly, the Company’s provision on federal, state and foreign tax related matters to be recorded in the future may change as revised estimates are made as or the underlying matters are settled or otherwise resolved.

The federal statute of limitations remains open in general for tax years ended June 30, 2016 through 2019. Various states statute of limitations remain open in general for tax years ended June 30, 2015 through 2019. Certain statutes of limitations in major foreign jurisdictions remain open in general for the tax years ended June 30, 2013 through 2019. The Company does not expect its unrecognized tax benefits to change materially over the next 12 months, except for the reductions arising from the lapse of the statute of limitations. It is reasonably possible that our gross unrecognized tax benefits will decrease by approximately $4.0 million in the next 12 months, primarily due to the lapse of the statute of limitations and settlement with the Tax Authorities. These adjustments, if recognized, would positively impact our effective tax rate, and would be recognized as additional tax benefits.