Entity Central Index Key Finite lived intangible assets amortization expense year six. Finite lived intangible assets amortization expense after year six. Document and entity information. Document And Entity Information [Abstract] Document Type Document Type Amendment Flag Amendment Flag Document Period End Date Document Period End Date Document Fiscal Year Focus Document Fiscal Year Focus Document Fiscal Period Focus Document Fiscal Period Focus Trading Symbol Trading Symbol Entity Registrant Name Entity Registrant Name Entity Central Index Key Current Fiscal Year End Date Current Fiscal Year End Date Entity Filer Category Entity Filer Category Entity Small Business Entity Small Business Entity Emerging Growth Company Entity Emerging Growth Company Entity Common Stock, Shares Outstanding Entity Common Stock Shares Outstanding Statement Of Financial Position [Abstract] ASSETS Assets [Abstract] Current Assets: Assets Current [Abstract] Cash and cash equivalents Cash And Cash Equivalents At Carrying Value Accounts receivable, net of allowances of $2.1 and $1.8 at March 31, 2019 and June 30, 2018, respectively Accounts Receivable Net Current Inventories Inventory Net Prepaid expenses and other current assets Prepaid Expense And Other Assets Current Total current assets Assets Current Property and equipment at cost, net of accumulated depreciation of $137.7 and $127.4 at March 31, 2019 and June 30, 2018, respectively Property Plant And Equipment Net Goodwill Goodwill Acquired intangibles, net Finite Lived Intangible Assets Net Non-current other assets Other Assets Noncurrent Total assets Assets LIABILITIES AND STOCKHOLDERS’ EQUITY Liabilities And Stockholders Equity [Abstract] Current Liabilities: Liabilities Current [Abstract] Accounts payable Accounts Payable Current Accrued compensation Employee Related Liabilities Current Income taxes payable Accrued Income Taxes Current Acquisition-related liabilities Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Current Liabilities Other accrued liabilities Other Accrued Liabilities Current Total current liabilities Liabilities Current Convertible notes, net Convertible Long Term Notes Payable Other long-term liabilities Other Liabilities Noncurrent Total liabilities Liabilities Stockholders' Equity: Stockholders Equity [Abstract] Common stock $0.001 par value; 120,000,000 shares authorized, 63,942,166 and 62,889,679 shares issued, and 34,452,290 and 35,249,803 shares outstanding, at March 31, 2019 and June 30, 2018, respectively Common Stock Value Additional paid-in capital Additional Paid In Capital Common Stock Treasury stock: 29,489,876 and 27,639,876 common treasury shares at March 31, 2019 and June 30, 2018, respectively, at cost Treasury Stock Value Accumulated other comprehensive income Accumulated Other Comprehensive Income Loss Net Of Tax Retained earnings Retained Earnings Accumulated Deficit Total stockholders' equity Stockholders Equity Liabilities and stockholders' equity Liabilities And Stockholders Equity Allowance for doubtful accounts receivable Allowance For Doubtful Accounts Receivable Current Property and equipment, accumulated depreciation Accumulated Depreciation Depletion And Amortization Property Plant And Equipment Common stock, par value Common Stock Par Or Stated Value Per Share Common stock, shares authorized Common Stock Shares Authorized Common stock, shares issued Common Stock Shares Issued Common stock, shares outstanding Common Stock Shares Outstanding Common treasury shares Treasury Stock Common Shares Amortization of intangible assets included in operating expense. Income Statement [Abstract] Net revenue Revenue From Contract With Customer Excluding Assessed Tax Cost of revenue Cost Of Goods And Services Sold Gross margin Gross Profit Operating expenses: Operating Expenses [Abstract] Research and development Research And Development Expense Selling, general, and administrative Selling General And Administrative Expense Acquired intangibles amortization Amortization Of Intangible Assets Included In Operating Expense Restructuring costs Restructuring Charges Total operating expenses Operating Expenses Operating income/(loss) Operating Income Loss Interest and other expense, net Nonoperating Income Expense Income/(loss) before provision for income taxes and equity investment loss Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments Provision/(benefit) for income taxes Income Tax Expense Benefit Equity investment loss Income Loss From Equity Method Investments Net income/(loss) Net Income Loss Net income/(loss) per share: Earnings Per Share [Abstract] Basic Earnings Per Share Basic Diluted Earnings Per Share Diluted Shares used in computing net income/(loss) per share: Weighted Average Number Of Shares Outstanding [Abstract] Basic Weighted Average Number Of Shares Outstanding Basic Diluted Weighted Average Number Of Diluted Shares Outstanding Statement Of Income And Comprehensive Income [Abstract] Net income/(loss) Other comprehensive loss: Other Comprehensive Income Loss Net Of Tax Period Increase Decrease [Abstract] Change in unrealized net gain on investment Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax Net current period-other comprehensive loss Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax Comprehensive income/(loss) Comprehensive Income Net Of Tax Payroll taxes for deferred stock units. Statement Of Stockholders Equity [Abstract] Statement [Table] Statement [Table] Equity Components Statement Equity Components [Axis] Equity Component Equity Component [Domain] Common Stock [Member] Common Stock [Member] Additional Paid-in Capital [Member] Additional Paid In Capital [Member] Treasury Stock [Member] Treasury Stock [Member] Accumulated Other Comprehensive Income [Member] Accumulated Other Comprehensive Income [Member] Retained Earnings [Member] Retained Earnings [Member] Statement [Line Items] Statement [Line Items] Balance, value Balance, shares Shares Issued Other comprehensive income Issuance of common stock for share- based award compensation plans Stock Issued During Period Value Share Based Compensation Issuance of common stock for share-based award compensation plans, shares Stock Issued During Period Shares Share Based Compensation Issuance of common stock for acquisition Stock Issued During Period Value Acquisitions Issuance of common stock for acquisition, shares Stock Issued During Period Shares Acquisitions Payroll taxes for deferred stock units Payroll Taxes For Deferred Stock Units Purchases of treasury stock Treasury Stock Value Acquired Cost Method Share-based compensation Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value Issuance of Convertible debt Stock Issued During Period Value Conversion Of Convertible Securities Balance, value Balance, shares Increase (decrease) in acquisition related liabilities. Payment for payroll taxes for deferred stock and market stock units. Statement Of Cash Flows [Abstract] Cash flows from operating activities Net Cash Provided By Used In Operating Activities [Abstract] Net income/(loss) Profit Loss Adjustments to reconcile net income/(loss) to net cash provided by operating activities: Adjustments To Reconcile Net Income Loss To Cash Provided By Used In Operating Activities [Abstract] Share-based compensation costs Share Based Compensation Depreciation and amortization Depreciation And Amortization Acquired intangibles amortization Amortization Of Intangible Assets Deferred taxes Increase Decrease In Deferred Income Taxes Amortization of convertible debt discount and issuance costs Amortization Of Financing Costs And Discounts Amortization of debt issuance costs Amortization Of Financing Costs Impairment recovery on investments Gain Loss On Investments Arbitration settlement Litigation Settlement Expense Equity investment loss Foreign currency remeasurement loss Foreign Currency Transaction Gain Loss Before Tax Changes in operating assets and liabilities, net of acquisitions: Increase Decrease In Operating Capital [Abstract] Accounts receivable, net Increase Decrease In Accounts Receivable Inventories Increase Decrease In Inventories Prepaid expenses and other current assets Increase Decrease In Prepaid Deferred Expense And Other Assets Other assets Increase Decrease In Other Operating Assets Accounts payable Increase Decrease In Accounts Payable Accrued compensation Increase Decrease In Employee Related Liabilities Acquisition-related liabilities Increase Decrease In Acquisition Related Liabilities Income taxes payable Increase Decrease In Accrued Income Taxes Payable Other accrued liabilities Increase Decrease In Other Accrued Liabilities Net cash provided by operating activities Net Cash Provided By Used In Operating Activities Cash flows from investing activities Net Cash Provided By Used In Investing Activities [Abstract] Acquisition of businesses, net of cash and cash equivalents acquired Payments To Acquire Businesses Net Of Cash Acquired Proceeds from sales of investments Proceeds From Sale Maturity And Collections Of Investments Purchases of property and equipment Payments To Acquire Property Plant And Equipment Purchase of intangible assets Payments To Acquire Intangible Assets Net cash used in investing activities Net Cash Provided By Used In Investing Activities Cash flows from financing activities Net Cash Provided By Used In Financing Activities [Abstract] Proceeds from issuance of convertible debt, net of issuance costs Proceeds From Debt Net Of Issuance Costs Payment of debt Repayments Of Debt Purchases of treasury stock Payments For Repurchase Of Common Stock Proceeds from issuance of shares Proceeds From Issuance Of Shares Under Incentive And Share Based Compensation Plans Including Stock Options Payment of debt issuance costs Payments Of Debt Issuance Costs Payroll taxes for deferred stock and market stock units Payment For Payroll Taxes For Deferred Stock And Market Stock Units Net cash provided by/(used in) financing activities Net Cash Provided By Used In Financing Activities Effect of exchange rate changes on cash and cash equivalents Effect Of Exchange Rate On Cash And Cash Equivalents Net increase/(decrease) in cash and cash equivalents Cash And Cash Equivalents Period Increase Decrease Cash and cash equivalents at beginning of period Cash And Cash Equivalents At Carrying Value Including Discontinued Operations Cash and cash equivalents at end of period Supplemental disclosures of cash flow information Supplemental Cash Flow Information [Abstract] Cash paid for taxes Income Taxes Paid Cash refund on taxes Proceeds From Income Tax Refunds Non-cash investing and financing activities: Cash Flow Noncash Investing And Financing Activities Disclosure [Abstract] Purchases of property and equipment in current liabilities Capital Expenditures Incurred But Not Yet Paid Common stock issued pursuant to acquisition Stock Issued1 Accounting Policies [Abstract] Basis of Presentation Basis Of Presentation And Significant Accounting Policies [Text Block] Revenue From Contract With Customer [Abstract] Revenue Recognition Revenue From Contract With Customer [Text Block] Net Income Per Share Earnings Per Share [Text Block] Fair Value Disclosures [Abstract] Fair Value Fair Value Disclosures [Text Block] Inventory Disclosure [Abstract] Inventories Inventory Disclosure [Text Block] Goodwill And Intangible Assets Disclosure [Abstract] Acquired Intangibles and Goodwill Goodwill And Intangible Assets Disclosure [Text Block] Payables And Accruals [Abstract] Other Accrued Liabilities Accounts Payable And Accrued Liabilities Disclosure [Text Block] Commitments And Contingencies Disclosure [Abstract] Indemnifications, Contingencies and Legal Proceedings Commitments And Contingencies Disclosure [Text Block] Debt Disclosure [Abstract] Debt Debt Disclosure [Text Block] Disclosure Of Compensation Related Costs Sharebased Payments [Abstract] Share-Based Compensation Disclosure Of Compensation Related Costs Share Based Payments [Text Block] Income Tax Disclosure [Abstract] Income Taxes Income Tax Disclosure [Text Block] Segment Reporting [Abstract] Segment, Customers, and Geographic Information Segment Reporting Disclosure [Text Block] Equity [Abstract] Comprehensive Income/(Loss) Comprehensive Income Note [Text Block] Restructuring And Related Activities [Abstract] Restructuring Activities Restructuring And Related Activities Disclosure [Text Block] Use of Estimates Use Of Estimates Foreign Currency Transactions and Foreign Exchange Contracts Foreign Currency Transactions And Translations Policy [Text Block] Revenue Recognition [Abstract] Adjustments for New Accounting Pronouncements Adjustments For New Accounting Pronouncements [Axis] Type of Adoption Type Of Adoption [Member] Topic 606 [Member] Accounting Standards Update201409 [Member] Topic 606 Disclosure of Impact of Adoption to Condensed Consolidated Statements Schedule Of New Accounting Pronouncements And Changes In Accounting Principles [Text Block] Computation of Basic and Diluted Net Income Per Share Schedule Of Earnings Per Share Basic And Diluted Table [Text Block] Financial Assets Measured at Fair Value on a Recurring Basis Schedule Of Fair Value Assets And Liabilities Measured On Recurring Basis Table [Text Block] Inventories Schedule Of Inventory Current Table [Text Block] Summary of Life, Gross Carrying Value and Related Accumulated Amortization of Acquired Intangible Assets Schedule Of Finite Lived Intangible Assets Table [Text Block] Schedule of Expected Annual Aggregate Amortization Expense Scheduleof Finite Lived Intangible Assets Future Amortization Expense Table [Text Block] Other Accrued Liabilities Schedule Of Accrued Liabilities Table [Text Block] Schedule of contractual interest expense and amortization of discount on notes. Schedule of Contractual Interest Expense and Amortization of Discount on Notes Schedule Of Contractual Interest Expense And Amortization Of Discount On Notes Table [Text Block] Schedule Of Share Based Compensation Arrangements By Share Based Payment Award [Table] Schedule Of Share Based Compensation Arrangements By Share Based Payment Award [Table] Award Type Award Type [Axis] Equity Award Share Based Compensation Arrangements By Share Based Payment Award Award Type And Plan Name [Domain] Deferred stock units. Deferred stock units outstanding [Member] Deferred Stock Units [Member] Market stock units. Market stock units outstanding [Member] Market Stock Units [Member] Performance stock units. Performance stock units outstanding [Member] Performance Stock Units [Member] Share Based Compensation Arrangement By Share Based Payment Award [Line Items] Share Based Compensation Arrangement By Share Based Payment Award [Line Items] Share-Based Compensation and Related Tax Benefit Recognized in Condensed Consolidated Statements of Operations Schedule Of Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Text Block] Balance of Outstanding and Exercisable Stock Options Schedule Of Share Based Compensation Stock Options Activity Table [Text Block] Balance and Aggregate Intrinsic Value of Stock Units Schedule Of Share Based Compensation Activity Table [Text Block] Shares Purchased, Weighted Average Purchase Price, Cash Received, and Aggregate Intrinsic Value for ESPP Schedule Of Share Based Compensation Employee Stock Purchase Plan Activity Table [Text Block] Schedule Of Segment Reporting Information By Segment [Table] Schedule Of Segment Reporting Information By Segment [Table] Concentration Risk Benchmark Concentration Risk By Benchmark [Axis] Concentration Risk Benchmark Concentration Risk Benchmark [Domain] Sales Revenue, Net [Member] Sales Revenue Net [Member] Accounts Receivable [Member] Accounts Receivable [Member] Segment Reporting Information [Line Items] Segment Reporting Information [Line Items] Net Revenue within Geographic Areas Based on Customers' Locations Revenue From External Customers By Geographic Areas Table [Text Block] Net Revenue from External Customers Schedule Of Entity Wide Information Revenue From External Customers By Products And Services [Text Block] Major Customers as Percentage of Net Revenue Schedules Of Concentration Of Risk By Risk Factor [Text Block] Restructuring Liability Schedule Of Restructuring And Related Costs [Text Block] Foreign currency transaction realized and unrealized gain (loss) net of tax. Net gain (loss) on foreign currency transactions Foreign Currency Transaction Realized And Unrealized Gain Loss Net Of Tax Revenue Initial Application Period Cumulative Effect Transition [Table] Revenue Initial Application Period Cumulative Effect Transition [Table] Initial Application Period Cumulative Effect Transition Initial Application Period Cumulative Effect Transition [Axis] Initial Application Period Cumulative Effect Transition Initial Application Period Cumulative Effect Transition [Domain] Cumulative Impact of Adopting Topic 606 [Member] Difference Between Revenue Guidance In Effect Before And After Topic606 [Member] Accounting Standards Update 2014-09 [Member] Range Range [Axis] Range Range [Member] Maximum [Member] Maximum [Member] Minimum [Member] Minimum [Member] Revenue Initial Application Period Cumulative Effect Transition [Line Items] Revenue Initial Application Period Cumulative Effect Transition [Line Items] Revenue Initial Application Period Cumulative Effect Transition [Abstract] Adjustments [Member] Proforma as if previous standard was in effect [Member] Calculated Under Revenue Guidance In Effect Before Topic606 [Member] Accounts receivable, net Total assets Total liabilities and stockholders' equity Cash flows from operating activities: Revenue performance obligation payment terms. Contract asset Contract With Customer Asset Net Contract liability Contract With Customer Liability Refund liability Contract With Customer Refund Liability Revenue recognized related to contract liabilities Contract With Customer Liability Revenue Recognized Revenue, performance obligation, payment terms Revenue Performance Obligation Payment Terms Description of payment terms in contract with customer Revenue Performance Obligation Description Of Payment Terms Remaining unsatisfied performance obligation Revenue Remaining Performance Obligation Numerator: Earnings Per Share Reconciliation [Abstract] Denominator: Weighted Average Number Of Shares Outstanding Diluted Disclosure Items [Abstract] Shares, basic Effect of dilutive share-based awards Incremental Common Shares Attributable To Share Based Payment Arrangements Shares, diluted Net income/(loss) per share: Earnings Per Share Basic And Diluted [Abstract] Schedule Of Antidilutive Securities Excluded From Computation Of Earnings Per Share [Table] Schedule Of Antidilutive Securities Excluded From Computation Of Earnings Per Share [Table] Antidilutive Securities Antidilutive Securities Excluded From Computation Of Earnings Per Share By Antidilutive Securities [Axis] Antidilutive Securities, Name Antidilutive Securities Name [Domain] Share-Based Awards [Member] Stock Compensation Plan [Member] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items] Common shares that were not included in computation of diluted net income per share Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Table] Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Table] Measurement Frequency Fair Value By Measurement Frequency [Axis] Fair Value, Measurement Frequency Fair Value Measurement Frequency [Domain] Fair Value, Measurements, Recurring [Member] Fair Value Measurements Recurring [Member] Asset Class Fair Value By Asset Class [Axis] Asset Class Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation By Asset Class [Domain] Money Market Funds [Member] Money Market Funds [Member] Auction Rate Securities [Member] Auction Rate Securities [Member] Fair Value Hierarchy and NAV Fair Value By Fair Value Hierarchy Level [Axis] Fair Value Hierarchy and NAV Fair Value Measurements Fair Value Hierarchy [Domain] Level 1 [Member] Fair Value Inputs Level1 [Member] Level 2 [Member] Fair Value Inputs Level2 [Member] Level 3 [Member] Fair Value Inputs Level3 [Member] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] Available-for-sale securities, debt securities Available For Sale Securities Debt Securities Available-for-sale securities, equity securities Equity Securities Fv Ni Total available-for-sale securities Investments Fair Value Disclosure Debt Instrument Debt Instrument [Axis] Debt Instrument, Name Debt Instrument Name [Domain] Senior surplus notes. Senior Surplus Notes [Member] Senior Surplus Notes [Member] Transfer amount of assets of level one Fair Value Assets Level1 To Level2 Transfers Amount Transfer amount of assets of level two Fair Value Assets Level2 To Level1 Transfers Amount Transfer amount of assets of level three Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Transfers Into Level3 Transfer amount of assets out of level three Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Transfers Out Of Level3 Gain on sale Debt Securities Gain Loss Raw materials and work-in-progress Inventory Work In Process And Raw Materials Net Of Reserves Finished goods Inventory Finished Goods Net Of Reserves Total Inventories Schedule Of Finite Lived Intangible Assets [Table] Schedule Of Finite Lived Intangible Assets [Table] Finite-Lived Intangible Assets by Major Class Finite Lived Intangible Assets By Major Class [Axis] Finite-Lived Intangible Assets, Major Class Name Finite Lived Intangible Assets Major Class Name [Domain] Display driver technology. Display Driver Technology [Member] Display Driver Technology [Member] Audio and video technology. Audio and Video Technology [Member] Audio And Video Technology [Member] Fingerprint authentication technology. Fingerprint Authentication Technology [Member] Fingerprint Authentication Technology [Member] Customer Relationships [Member] Customer Relationships [Member] Licensed technology and other. Licensed Technology and Other [Member] Licensed Technology And Other [Member] Tradename [Member] Trade Names [Member] Patents [Member] Patents [Member] Backlog [Member] Order Or Production Backlog [Member] In-Process Research and Development [Member] In Process Research And Development [Member] Finite-Lived Intangible Assets [Line Items] Finite Lived Intangible Assets [Line Items] Acquired intangibles, Gross Carrying Value Finite Lived Intangible Assets Gross Acquired intangibles, Accumulated Amortization Finite Lived Intangible Assets Accumulated Amortization Acquired intangibles, Net Carrying Value Weighted Average Life in Years Acquired Finite Lived Intangible Assets Weighted Average Useful Life Income Statement Location Income Statement Location [Axis] Income Statement Location Income Statement Location [Domain] Cost of Revenue [Member] Cost Of Sales [Member] Remainder of 2019 Finite Lived Intangible Assets Amortization Expense Remainder Of Fiscal Year 2020 Finite Lived Intangible Assets Amortization Expense Year Two 2021 Finite Lived Intangible Assets Amortization Expense Year Three 2022 Finite Lived Intangible Assets Amortization Expense Year Four 2023 Finite Lived Intangible Assets Amortization Expense Year Five 2024 Finite Lived Intangible Assets Amortization Expense Year Six Thereafter Finite Lived Intangible Assets Amortization Expense After Year Six Changes in goodwill Goodwill Period Increase Decrease Customer obligations. Accrued liabilities for inventory purchase. Customer Obligations Customer Obligations Inventory obligations Accrued Liabilities For Inventory Purchase Warranty Product Warranty Accrual Classified Current Other Other Sundry Liabilities Current Other accrued liabilities Contract liabilities Refund liabilities Proceeds from issuance of convertible debt. Debt Instrument [Table] Debt Instrument [Table] Zero point five zero percent convertible senior notes due two thousand twenty two. 0.50% Convertible Senior Notes due 2022 [Member] Zero Point Five Zero Percent Convertible Senior Notes Due Two Thousand Twenty Two [Member] Amendment and restatement agreement. Amendment and Restatement Agreement [Member] Amendment And Restatement Agreement [Member] Credit Facility Credit Facility [Axis] Credit Facility Credit Facility [Domain] Revolving Credit Facility [Member] Revolving Credit Facility [Member] Letter of Credit [Member] Letter Of Credit [Member] Bridge Loan [Member] Bridge Loan [Member] Variable Rate Variable Rate [Axis] Variable Rate Variable Rate [Domain] Federal Funds Rates [Member] Federal Funds Effective Swap Rate [Member] LIBOR [Member] London Interbank Offered Rate L I B O R [Member] Base Rate [Member] Base Rate [Member] Scenario Statement Scenario [Axis] Scenario, Unspecified Scenario Unspecified [Domain] For four fiscal quarters ending after date of material acquisition. For The First Four Fiscal Quarters Ending After Date of Material Acquisition [Member] For Four Fiscal Quarters Ending After Date Of Material Acquisition [Member] Thereafter. Thereafter [Member] Thereafter [Member] Debt Instrument [Line Items] Debt Instrument [Line Items] Debt instrument aggregate principal amounts Debt Instrument Face Amount Net proceeds from issuance of convertible debt Proceeds From Issuance Of Convertible Debt Interest rates on borrowings Debt Instrument Interest Rate Stated Percentage Debt instrument maturity date Debt Instrument Maturity Date Convertible debt principal amount in multiples. Conversion of notes in multiples of principal amounts Convertible Debt Principal Amount In Multiples Debt instrument convertible number of shares per thousand of principal amount of notes. Convertible number of shares, principal amount of notes Debt Instrument Convertible Number Of Shares Per Thousand Of Principal Amount Of Notes Initial conversion price per share of common stock Debt Instrument Convertible Conversion Price1 Percentage of principal amount of notes equal to repurchase price. Note repurchase price, percentage of principal amount of notes Percentage Of Principal Amount Of Notes Equal To Repurchase Price Sale price of common stock, minimum threshold percentage Debt Instrument Convertible Threshold Percentage Of Stock Price Trigger Sale of common stock, threshold trading days Debt Instrument Convertible Threshold Trading Days Sale of common stock, threshold consecutive trading days Debt Instrument Convertible Threshold Consecutive Trading Days1 Nonconvertible debt borrowing rate. Debt instrument initial purchaser's discount. Debt instrument legal accounting and printing costs. Convertible debt issuance costs pro rata to equity components. Convertible debt issuance costs pro rata to debt components. Debt instrument amortization period. Equity component of the principal amount of the convertible debt Debt Instrument Convertible Carrying Amount Of The Equity Component Nonconvertible debt borrowing rate Nonconvertible Debt Borrowing Rate Debt instrument term Debt Instrument Term Debt issuance costs Deferred Finance Costs Gross Initial purchaser’s discount Debt Instrument Initial Purchasers Discount Legal, accounting, and printing costs Debt Instrument Legal Accounting And Printing Costs Convertible debt issuance costs pro rata to equity components Convertible Debt Issuance Costs Pro Rata To Equity Components Convertible debt issuance costs pro rata to debt components Convertible Debt Issuance Costs Pro Rata To Debt Components Debt amortization period Debt Instrument Amortization Period Interest expense Interest Expense Debt Excluding Amortization Amortization of discount and debt issuance costs Total interest Interest Expense Debt Unamortized amounts of debt issuance costs Deferred Finance Costs Net Unamortized amounts of debt discount Debt Instrument Unamortized Discount Line of credit facility allowable requests for additional borrowing. Line of credit facility amount Line Of Credit Facility Maximum Borrowing Capacity Line of credit facility allowable requests for additional borrowing Line Of Credit Facility Allowable Requests For Additional Borrowing Outstanding principal amount Line Of Credit Line of credit facility repayment date description. Maturity period Line Of Credit Facility Expiration Date1 Repayment date, description Line Of Credit Facility Repayment Date Description Debt issuance cost Percentage of voting capital stock of certain foreign subsidiaries collateralized. Percentage of voting capital stock Percentage Of Voting Capital Stock Of Certain Foreign Subsidiaries Collateralized Description of base rate Debt Instrument Description Of Variable Rate Basis Basis spread on variable rate Debt Instrument Basis Spread On Variable Rate1 Commitment fee percentage of unused portion Line Of Credit Facility Unused Capacity Commitment Fee Percentage Maximum accounts receivable financings. Maximum permitted leverage ratio. Fixed coverage ratio. Minimum interest coverage ratio. Covenant description Debt Instrument Covenant Description Maximum accounts receivable financings per quarter Maximum Accounts Receivable Financings Maximum leverage ratio permitted Maximum Permitted Leverage Ratio Minimum interest coverage ratio Minimum Interest Coverage Ratio Fixed coverage ratio Fixed Coverage Ratio Employee service share based compensation tax benefit (expense) from compensation expense. Schedule Of Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Table] Schedule Of Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Table] Research and Development [Member] Research And Development Expense [Member] Selling, General, and Administrative [Member] Selling General And Administrative Expenses [Member] Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items] Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items] Total Allocated Share Based Compensation Expense Income tax benefit on share-based compensation Employee Service Share Based Compensation Tax Benefit Expense From Compensation Expense Stock Option Awards Outstanding, Balance as of June 30, 2018 Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number Stock Option Awards Outstanding, Granted Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross Stock Option Awards Outstanding, Exercised Stock Issued During Period Shares Stock Options Exercised Stock Option Awards Outstanding, Forfeited Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures In Period Stock Option Awards Outstanding, Balance as of March 31, 2019 Stock Option Awards Outstanding, Exercisable at March 31, 2019 Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number Weighted Average Exercise Price, Balance as of June 30, 2018 Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price Weighted Average Exercise Price, Granted Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price Weighted Average Exercise Price, Exercised Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price Weighted Average Exercise Price, Forfeited Share Based Compensation Arrangements By Share Based Payment Award Options Forfeitures In Period Weighted Average Exercise Price Weighted Average Exercise Price, Balance as of March 31, 2019 Weighted Average Exercise Price, Exercisable at March 31, 2019 Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Weighted Average Exercise Price Aggregate Intrinsic Value, Balance as of March 31, 2019 Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value Aggregate Intrinsic Value, Exercisable at March 31, 2019 Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Intrinsic Value1 Share based compensation arrangement by share based payment award intrinsic value closing price. Stock option outstanding [Member] Employee Stock Option [Member] Closing price of common stock used to calculate Aggregate intrinsic value of stock option outstanding Share Based Compensation Arrangement By Share Based Payment Award Intrinsic Value Closing Price Share based compensation arrangement by share based payment award equity instruments other than options adjustments for performance results attained. Stock Unit Awards Outstanding, Balance as of June 30, 2018 Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Number Stock Unit Awards, Granted Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period Stock Unit Awards, Performance adjustment Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Adjustments For Performance Results Attained Stock Unit Awards, Delivered Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period Stock Unit Awards, Forfeited Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeited In Period Stock Unit Awards Outstanding, Balance as of March 31, 2019 Aggregate Intrinsic Value, Balance as of March 31, 2019 Sharebased Compensation Arrangement By Sharebased Payment Award Equity Instruments Other Than Options Aggregate Intrinsic Value Outstanding Shares withheld to meet statutory tax withholding requirements Shares Paid For Tax Withholding For Share Based Compensation Shares valued withheld to meet statutory tax withholding requirements Adjustments Related To Tax Withholding For Share Based Compensation Potential payout adjustment ratio. Percentage of potential payout. Vesting Vesting [Axis] Vesting Vesting [Domain] Share-based Compensation Award, First Tranche [Member] Share Based Compensation Award Tranche One [Member] Share-based Compensation Award, Second Tranche [Member] Share Based Compensation Award Tranche Two [Member] Share-based Compensation Award, Third Tranche [Member] Share Based Compensation Award Tranche Three [Member] Vesting period of the underlying awards Share Based Compensation Arrangement By Share Based Payment Award Award Vesting Period1 Vesting percentage of the underlying awards Sharebased Compensation Arrangement By Sharebased Payment Award Award Vesting Rights Percentage Potential payout range Percentage Of Potential Payout Potential payout adjustment ratio Potential Payout Adjustment Ratio Unrecognized share-based compensation cost Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Share Based Awards Other Than Options Unrecognized share-based compensation, period for recognition Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Period For Recognition1 Threshold percentage of earnings per share to trigger pay out. Threshold percentage of earnings per share to trigger pay out Threshold Percentage Of Earnings Per Share To Trigger Pay Out Requisite service period Share Based Compensation Arrangement By Share Based Payment Award Award Requisite Service Period1 Plan Name Plan Name [Axis] Plan Name Plan Name [Domain] An employee stock purchase plan which allows employees to designate a portion of their base compensation, subject to legal restrictions and limitations, to purchase shares of common stock at 85% of the lesser of the FMV at the beginning of the offering period or the exercise date. The offering period extends for up to two years and includes four exercise dates occurring at six-month intervals. If the FMV at an exercise date is less than the FMV at the beginning of the offering period, the current offering period will terminate and a new two-year offering period will commence. Employee Stock Purchase Plan [Member] Employee Stock Purchase Plan [Member] Shares purchased Share Based Compensation Arrangement By Share Based Payment Award Shares Purchased For Award Weighted average purchase price Share Based Compensation Arrangement By Share Based Payment Award Per Share Weighted Average Price Of Shares Purchased Cash received Proceeds From Stock Plans Aggregate intrinsic value Income tax disclosure. Income tax disclosure. Income Tax Disclosure [Table] Income Tax Disclosure [Table] Scenario, Plan [Member] Scenario Plan [Member] Balance Sheet Location Balance Sheet Location [Axis] Balance Sheet Location Balance Sheet Location [Domain] Cash assets. Cash Assets [Member] Cash Assets [Member] Other Specified Assets [Member] Other Assets [Member] Income Tax Disclosure [Line Items] Income Tax Disclosure [Line Items] U.S. federal corporate tax rate Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate Tax cuts and jobs act of 2017 change in tax rate income tax expense (benefit). Tax cuts and jobs act of 2017 incomplete accounting provisional income tax expense (benefit). Tax cuts and jobs act of 2017 incomplete accounting change in tax rate provisional income tax expense (benefit). One-time transition tax rate on foreign earnings and profits. Tax cuts and jobs act of 2017 accounting one time transition tax effect net on income tax payable. Tax cuts and jobs act of 2017 change in tax rate non-discrete income tax expense (benefit). Tax cuts and jobs act of 2017 change in tax rate discrete income tax expense (benefit). Provisional tax expense Tax Cuts And Jobs Act Of2017 Change In Tax Rate Income Tax Expense Benefit One-time transition tax expense Tax Cuts And Jobs Act Of2017 Incomplete Accounting Provisional Income Tax Expense Benefit Benefit from remeasurement of deferred tax at new tax rate Tax Cuts And Jobs Act Of2017 Incomplete Accounting Change In Tax Rate Provisional Income Tax Expense Benefit One-time transition tax rate on post-1986 foreign earnings and profits One Time Transition Tax Rate On Foreign Earnings And Profits One-time transition tax effect net on income tax payable Tax Cuts And Jobs Act Of2017 Accounting One Time Transition Tax Effect Net On Income Tax Payable Non-discrete tax expense Tax Cuts And Jobs Act Of2017 Change In Tax Rate Non Discrete Income Tax Expense Benefit Discrete tax benefit Tax Cuts And Jobs Act Of2017 Change In Tax Rate Discrete Income Tax Expense Benefit Increase (Decrease) in unrecognized tax benefit income tax penalties and interest accrued. Gross unrecognized tax benefits Unrecognized Tax Benefits Gross unrecognized tax benefits increased (decreased) during the year Unrecognized Tax Benefits Period Increase Decrease Interest and penalties accrued related to unrecognized tax benefits Unrecognized Tax Benefits Income Tax Penalties And Interest Accrued Increase in interest and penalties accrued related to unrecognized tax benefits Increase Decrease In Unrecognized Tax Benefit Income Tax Penalties And Interest Accrued Estimated increase in unrecognized tax benefit in next twelve months Increase In Unrecognized Tax Benefits Is Reasonably Possible Number of product categories. Number of operating segments Number Of Operating Segments Number of product Number Of Product Categories Schedule Of Revenues From External Customers And Long Lived Assets [Table] Schedule Of Revenues From External Customers And Long Lived Assets [Table] Geographical Statement Geographical [Axis] Geographical Segment Geographical [Domain] China [Member] CHINA Japan [Member] JAPAN Taiwan [Member] TAIWAN, PROVINCE OF CHINA Other foreign country. Other [Member] Other Foreign Country [Member] South Korea [Member] KOREA, REPUBLIC OF United States [Member] UNITED STATES Revenues from External Customers and Long-Lived Assets [Line Items] Revenues From External Customers And Long Lived Assets [Line Items] Schedule Of Entity Wide Information Revenue From External Customers By Products And Services [Table] Schedule Of Entity Wide Information Revenue From External Customers By Products And Services [Table] Product and Service Product Or Service [Axis] Product and Service Products And Services [Domain] Mobile product applications. Mobile Product Applications [Member] Mobile Product Applications [Member] Pc product applications. PC Product Applications [Member] Pc Product Applications [Member] Internet of things product applications. Internet of Things Product Applications [Member] Internet Of Things Product Applications [Member] Revenue from External Customer [Line Items] Entity Wide Information Revenue From External Customer [Line Items] Concentration Risk [Table] Concentration Risk [Table] Customer Major Customers [Axis] Customer Name Of Major Customer [Domain] Customer A. Customer A [Member] Customer A [Member] Customer B. Customer B [Member] Customer B [Member] Customer C. Customer C [Member] Customer C [Member] Concentration Risk Type Concentration Risk By Type [Axis] Concentration Risk Type Concentration Risk Type [Domain] Customer Concentration Risk [Member] Customer Concentration Risk [Member] Revenue, Major Customer [Line Items] Concentration Risk [Line Items] Concentration Risk, Percentage Concentration Risk Percentage1 Credit Concentration Risk [Member] Credit Concentration Risk [Member] Concentration Risk, Percentage Schedule Of Restructuring And Related Costs [Table] Schedule Of Restructuring And Related Costs [Table] Restructuring Plan Restructuring Plan [Axis] Restructuring Plan Restructuring Plan [Domain] November two thousand seventeen and april two thousand eighteen restructuring plan. November 2017 and April 2018 Restructuring Plan [Member] November Two Thousand Seventeen And April Two Thousand Eighteen Restructuring Plan [Member] Restructuring Type Restructuring Cost And Reserve [Axis] Type of Restructuring Type Of Restructuring [Domain] Employee severance and benefits. Employee Severance And Benefits Employee Severance And Benefits [Member] Facility consolidation and related charges. Facility Consolidation And Related Charges Facility Consolidation And Related Charges [Member] August two thousand eighteen restructuring plan. August 2018 Restructuring Plan [Member] August Two Thousand Eighteen Restructuring Plan [Member] Restructuring Cost And Reserve [Line Items] Restructuring Cost And Reserve [Line Items] Balance as of June 30, 2018 Restructuring Reserve Accruals Restructuring Reserve Accrual Adjustment1 Cash payments Payments For Restructuring Balance as of March 31, 2019