Income Taxes	9 Months Ended
Mar. 25, 2018
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes In general, the variation between the Company's effective income tax rate and the U.S. statutory rate of 28.3% is primarily due to: (i) changes in the Company’s valuation allowances against deferred tax assets in the U.S. and Luxembourg, (ii) projected income for the full year derived from international locations with lower tax rates than the U.S. and (iii) projected tax credits generated. The Tax Cuts and Jobs Act of 2017 (Tax Legislation), enacted on December 22, 2017, contains significant changes to U.S. tax law, including lowering the U.S. corporate income tax rate to 21%, implementing a territorial tax system, and imposing a one-time tax on deemed repatriated earnings of foreign subsidiaries. The Company has included preliminary estimates for the impact of the Tax Legislation in our unaudited financial statements within this Quarterly Report. These preliminary estimates may be impacted by a number of additional considerations, including, but not limited to, the issuance of authoritative guidance and final regulations, the Company's ongoing analysis of the new law and the Company's actual earnings for the fiscal year ending June 24, 2018. The Tax Legislation reduces the U.S. statutory tax rate from 35% to 21%, effective January 1, 2018. U.S. tax law requires that taxpayers with a fiscal year that begins before and ends after the effective date of a rate change calculate a blended tax rate based on the pro rata number of days in the fiscal year before and after the effective date. As a result, for the fiscal year ending June 24, 2018, the Company’s statutory income tax rate will be 28.3%. For the fiscal year ending June 30, 2019, the Company’s statutory income tax rate will be 21%. During the three months ended December 24, 2017, the Company recorded an $18.8 million discrete tax benefit representing the benefit of remeasuring its U.S. deferred tax liabilities at the lower 21% statutory tax rate. The Tax Legislation also implements a territorial tax system. Under the territorial tax system, in general, the Company’s foreign earnings will no longer be subject to tax in the U.S. As part of transitioning to the territorial tax system, the Tax Legislation includes a mandatory deemed repatriation of all undistributed foreign earnings that are subject to a U.S. income tax. As of March 25, 2018, the Company estimates the deemed repatriation will result in $14.1 million of additional U.S. income tax, a decrease of $1.6 million from the estimate as of December 24, 2017. There is no impact to the Company's effective income tax rate as a result of the change in estimated deemed repatriation tax as the Company continues to expect to fully offset the additional tax through the utilization of tax credits. This preliminary estimate was impacted by the issuance of authoritative guidance and the Company's actual earnings for the three months ended March 25, 2018. As of March 25, 2018, the Company has approximately $215.4 million of undistributed earnings for certain non-U.S. subsidiaries, a decrease from the prior quarter primarily due to distribution of foreign earnings. During the three months ended March 25, 2018, the Company reevaluated its assertion to reinvest a portion of its undistributed foreign earnings in foreign operations indefinitely considering the acquisition of the RF Power assets. For the three months ended March 25, 2018, the Company has determined that $184.6 million of the $215.4 million of undistributed foreign earnings are expected to be repatriated in the foreseeable future. For the three months ended March 25, 2018, the Company recorded a $1.3 million discrete tax expense representing the deferred tax liability for foreign income taxes expected to be withheld upon repatriation of the foreign earnings. As of March 25, 2018, the Company has not provided income taxes on the remaining undistributed foreign earnings of $30.9 million as the Company continues to maintain its intention to reinvest these earnings in foreign operations indefinitely. If, at a later date, these earnings were repatriated to the U.S., the Company would be required to pay approximately$1.5 million in taxes on these amounts. The Company assesses all available positive and negative evidence to estimate if sufficient future taxable income will be generated to utilize the existing deferred tax assets by jurisdiction. The Company has concluded that it is necessary to recognize a full valuation allowance against its U.S. and Luxembourg deferred tax assets. The Company reassessed the need for a full valuation allowance against its U.S. deferred tax assets due to the Tax Legislation and the acquisition of the RF Power assets and concluded that a full valuation allowance is still necessary. As of June 25, 2017, the U.S. valuation allowance was $101.8 million. During the nine months ended March 25, 2018, the Company decreased the U.S. valuation allowance by $7.0 million due to the impact of the Tax Legislation offset by the creation of U.S. deferred tax assets upon the impairment of goodwill. As of June 25, 2017, the Luxembourg valuation allowance was $5.8 million. During the nine months ended March 25, 2018, the Company reduced this valuation allowance by $1.1 million due to year-to-date income in Luxembourg. U.S. GAAP requires a two-step approach to recognizing and measuring uncertain tax positions. The first step is to evaluate the tax position for recognition by determining if the available evidence indicates that it is more likely than not that the position will be sustained on audit, including resolution of related appeals or litigation processes, if any. The second step is to measure the tax benefit as the largest amount that is cumulatively more than 50% likely to be realized upon ultimate settlement. As of June 25, 2017, the Company's liability for unrecognized tax benefits was $13.3 million. During the nine months ended March 25, 2018, the Company recorded a $4.7 million decrease to the liability for unrecognized tax benefits due to the U.S. statutory rate reduction. In addition, there was a $0.6 million increase in the unrecognized tax benefits due to uncertainty regarding state depreciation deductions, and a $0.3 million decrease due to expiration of statute of limitations. As a result, the total liability for unrecognized tax benefits as of March 25, 2018 was $8.9 million. If any portion of this $8.9 million is recognized, the Company will then include that portion in the computation of its effective tax rate. Although the ultimate timing of the resolution and/or closure of audits is highly uncertain, the Company believes it is reasonably possible that $0.8 million of gross unrecognized tax benefits will change in the next 12 months as a result of statute requirements. The Company files U.S. federal, U.S. state and foreign tax returns. For U.S. federal purposes, the Company is generally no longer subject to tax examinations for fiscal years prior to 2015. For U.S. state tax returns, the Company is generally no longer subject to tax examinations for fiscal years prior to 2014. For foreign purposes, the Company is generally no longer subject to tax examinations for tax periods prior to 2007. Certain carryforward tax attributes generated in prior years remain subject to examination, adjustment and recapture.

Income Taxes

In general, the variation between the Company's effective income tax rate and the U.S. statutory rate of 28.3% is primarily due to: (i) changes in the Company’s valuation allowances against deferred tax assets in the U.S. and Luxembourg, (ii) projected income for the full year derived from international locations with lower tax rates than the U.S. and (iii) projected tax credits generated.

The Tax Cuts and Jobs Act of 2017 (Tax Legislation), enacted on December 22, 2017, contains significant changes to U.S. tax law, including lowering the U.S. corporate income tax rate to 21%, implementing a territorial tax system, and imposing a one-time tax on deemed repatriated earnings of foreign subsidiaries. The Company has included preliminary estimates for the impact of the Tax Legislation in our unaudited financial statements within this Quarterly Report. These preliminary estimates may be impacted by a number of additional considerations, including, but not limited to, the issuance of authoritative guidance and final regulations, the Company's ongoing analysis of the new law and the Company's actual earnings for the fiscal year ending June 24, 2018.

The Tax Legislation reduces the U.S. statutory tax rate from 35% to 21%, effective January 1, 2018. U.S. tax law requires that taxpayers with a fiscal year that begins before and ends after the effective date of a rate change calculate a blended tax rate based on the pro rata number of days in the fiscal year before and after the effective date. As a result, for the fiscal year ending June 24, 2018, the Company’s statutory income tax rate will be 28.3%. For the fiscal year ending June 30, 2019, the Company’s statutory income tax rate will be 21%. During the three months ended December 24, 2017, the Company recorded an $18.8 million discrete tax benefit representing the benefit of remeasuring its U.S. deferred tax liabilities at the lower 21% statutory tax rate.

The Tax Legislation also implements a territorial tax system. Under the territorial tax system, in general, the Company’s foreign earnings will no longer be subject to tax in the U.S. As part of transitioning to the territorial tax system, the Tax Legislation includes a mandatory deemed repatriation of all undistributed foreign earnings that are subject to a U.S. income tax. As of March 25, 2018, the Company estimates the deemed repatriation will result in $14.1 million of additional U.S. income tax, a decrease of $1.6 million from the estimate as of December 24, 2017. There is no impact to the Company's effective income tax rate as a result of the change in estimated deemed repatriation tax as the Company continues to expect to fully offset the additional tax through the utilization of tax credits. This preliminary estimate was impacted by the issuance of authoritative guidance and the Company's actual earnings for the three months ended March 25, 2018.

As of March 25, 2018, the Company has approximately $215.4 million of undistributed earnings for certain non-U.S. subsidiaries, a decrease from the prior quarter primarily due to distribution of foreign earnings. During the three months ended March 25, 2018, the Company reevaluated its assertion to reinvest a portion of its undistributed foreign earnings in foreign operations indefinitely considering the acquisition of the RF Power assets. For the three months ended March 25, 2018, the Company has determined that $184.6 million of the $215.4 million of undistributed foreign earnings are expected to be repatriated in the foreseeable future. For the three months ended March 25, 2018, the Company recorded a $1.3 million discrete tax expense representing the deferred tax liability for foreign income taxes expected to be withheld upon repatriation of the foreign earnings. As of March 25, 2018, the Company has not provided income taxes on the remaining undistributed foreign earnings of $30.9 million as the Company continues to maintain its intention to reinvest these earnings in foreign operations indefinitely. If, at a later date, these earnings were repatriated to the U.S., the Company would be required to pay approximately$1.5 million in taxes on these amounts.

The Company assesses all available positive and negative evidence to estimate if sufficient future taxable income will be generated to utilize the existing deferred tax assets by jurisdiction. The Company has concluded that it is necessary to recognize a full valuation allowance against its U.S. and Luxembourg deferred tax assets. The Company reassessed the need for a full valuation allowance against its U.S. deferred tax assets due to the Tax Legislation and the acquisition of the RF Power assets and concluded that a full valuation allowance is still necessary. As of June 25, 2017, the U.S. valuation allowance was $101.8 million. During the nine months ended March 25, 2018, the Company decreased the U.S. valuation allowance by $7.0 million due to the impact of the Tax Legislation offset by the creation of U.S. deferred tax assets upon the impairment of goodwill. As of June 25, 2017, the Luxembourg valuation allowance was $5.8 million. During the nine months ended March 25, 2018, the Company reduced this valuation allowance by $1.1 million due to year-to-date income in Luxembourg.

U.S. GAAP requires a two-step approach to recognizing and measuring uncertain tax positions. The first step is to evaluate the tax position for recognition by determining if the available evidence indicates that it is more likely than not that the position will be sustained on audit, including resolution of related appeals or litigation processes, if any. The second step is to measure the tax benefit as the largest amount that is cumulatively more than 50% likely to be realized upon ultimate settlement.

As of June 25, 2017, the Company's liability for unrecognized tax benefits was $13.3 million. During the nine months ended March 25, 2018, the Company recorded a $4.7 million decrease to the liability for unrecognized tax benefits due to the U.S. statutory rate reduction. In addition, there was a $0.6 million increase in the unrecognized tax benefits due to uncertainty regarding state depreciation deductions, and a $0.3 million decrease due to expiration of statute of limitations. As a result, the total liability for unrecognized tax benefits as of March 25, 2018 was $8.9 million. If any portion of this $8.9 million is recognized, the Company will then include that portion in the computation of its effective tax rate. Although the ultimate timing of the resolution and/or closure of audits is highly uncertain, the Company believes it is reasonably possible that $0.8 million of gross unrecognized tax benefits will change in the next 12 months as a result of statute requirements.

The Company files U.S. federal, U.S. state and foreign tax returns. For U.S. federal purposes, the Company is generally no longer subject to tax examinations for fiscal years prior to 2015. For U.S. state tax returns, the Company is generally no longer subject to tax examinations for fiscal years prior to 2014. For foreign purposes, the Company is generally no longer subject to tax examinations for tax periods prior to 2007. Certain carryforward tax attributes generated in prior years remain subject to examination, adjustment and recapture.