Inventory Disclosure [Abstract] INVENTORIES Inventory Disclosure [Text Block] Debt Disclosure [Abstract] Schedule of Long-term Debt Instruments Schedule of Long-term Debt Instruments [Table Text Block] Consolidating Financial Information [Abstract] Consolidating Financial Information [Abstract] CONSOLIDATING FINANCIAL INFORMATION Consolidating Financial Information [Text Block] Consolidating Financial Information [Text Block] Earnings Per Share [Abstract] Schedule of Long-term Debt Instruments [Table] Schedule of Long-term Debt Instruments [Table] Long-term Debt, Type [Axis] Long-term Debt, Type [Axis] Long-term Debt, Type [Domain] Long-term Debt, Type [Domain] Debt Instrument [Line Items] Debt Instrument [Line Items] Antidilutive shares excluded from the computation of diluted shares outstanding Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Document Period End Date Document Period End Date Net Income (Loss) Per Share (Textual) Net Loss Income Per Share (Textual) [Abstract] Net loss income per share. Initial aggregate principal amount of Notes issued Debt Instrument, Face Amount Goodwill and Intangible Assets Disclosure [Abstract] Schedule of Business Acquisitions, by Acquisition [Table] Schedule of Business Acquisitions, by Acquisition [Table] Intangible Assets by Major Class [Axis] Finite-Lived Intangible Assets by Major Class [Axis] Finite-Lived Intangible Assets, Major Class Name [Domain] Finite-Lived Intangible Assets, Major Class Name [Domain] Developed Technology Developed Technology Rights [Member] Customer Relationships Customer Relationships [Member] Business Acquisition [Line Items] Business Acquisition [Line Items] Finite-Lived Intangible Assets, Net Finite-Lived Intangible Assets, Net Intangible assets, net Intangible Assets, Net (Excluding Goodwill) Amortization expense Amortization of Intangible Assets Components of inventories Inventory, Net, Items Net of Reserve Alternative [Abstract] Raw materials Inventory, Raw Materials, Net of Reserves Work in process Inventory, Work in Process, Net of Reserves Finished goods Inventory, Finished Goods, Net of Reserves Total inventories Inventory, Net Income Tax Disclosure [Abstract] INCOME TAXES Income Tax Disclosure [Text Block] Segment Reporting [Abstract] OPERATING SEGMENT INFORMATION Segment Reporting Disclosure [Text Block] Investments and Fair Value Measurements [Abstract] Investments and fair value measurements. INVESTMENTS AND FAIR VALUE MEASUREMENTS Investments and Fair Value Measurements [Text Block] Investments and fair value measurements. Revenue from Contract with Customer [Abstract] REVENUE Revenue from Contract with Customer [Text Block] Income Statement [Abstract] Revenue Revenues Cost of goods sold Cost of Goods and Services Sold Gross profit Gross Profit Operating expenses: Operating Expenses [Abstract] Research and development Research and Development Expense Selling, general and administrative Selling, General and Administrative Expense Other operating expense Other Operating Income (Expense), Net Total operating expenses Operating Expenses Loss from operations Operating Income (Loss) Interest expense (Note 6) Interest Expense Interest income Investment Income, Net Other expense (Note 6) Other Nonoperating Income (Expense) Loss before income taxes Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Noncontrolling Interest Income tax benefit (Note 10) Income Tax Expense (Benefit) Net loss Net Income (Loss) Attributable to Parent Net loss per share (Note 11): Basic Earnings Per Share, Basic Diluted Earnings Per Share, Diluted Weighted average shares of common stock outstanding (Note 11): Weighted Average Number of Shares Outstanding, Diluted [Abstract] Basic Weighted Average Number of Shares Outstanding, Basic Diluted Weighted Average Number of Shares Outstanding, Diluted Statement of Cash Flows [Abstract] Cash flows from operating activities: Net Cash Provided by (Used in) Operating Activities [Abstract] Net loss Adjustments to reconcile net loss to net cash provided by operating activities: Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Depreciation Depreciation Amortization and other non-cash items (Notes 4 & 6) Amortization Deferred income taxes Deferred Income Tax Expense (Benefit) Foreign currency adjustments Foreign Currency Transaction Gain (Loss), Unrealized Loss (gain) on investments and other assets, net Gain (loss) on assets and other, net The gains (losses) included in earnings resulting from the sale or disposal of tangible or intangible assets. Stock-based compensation expense Share-based Compensation Changes in operating assets and liabilities: Increase (Decrease) in Operating Capital [Abstract] Accounts receivable, net Increase (Decrease) in Accounts Receivable Inventories Increase (Decrease) in Inventories Prepaid expenses and other current and non-current assets Increase (Decrease) in Prepaid Expense and Other Assets Accounts payable and accrued liabilities Increase (Decrease) in Accounts Payable and Accrued Liabilities Income tax (recoverable) / payable Increase (Decrease) in Income Taxes Payable Other liabilities Increase (Decrease) in Other Operating Liabilities Net cash provided by operating activities Net Cash Provided by (Used in) Operating Activities Investing activities: Net Cash Provided by (Used in) Investing Activities [Abstract] Purchase of property and equipment Payments to Acquire Property, Plant, and Equipment Purchase of debt securities and other investments Payments to Acquire Debt Securities, Available-for-sale Proceeds from maturities of other investments Proceeds from Sale and Maturity of Debt Securities, Available-for-sale Other investing activities Payments for (Proceeds from) Other Investing Activities Net cash used in investing activities Net Cash Provided by (Used in) Investing Activities Financing activities: Net Cash Provided by (Used in) Financing Activities [Abstract] Payment of debt (Note 6) Repayments of Long-term Debt Repurchase of common stock, including transaction costs (Note 7) Payments for Repurchase of Common Stock Proceeds from the issuance of common stock Proceeds from Issuance of Shares under Incentive and Share-based Compensation Plans, Including Stock Options Tax withholding paid on behalf of employees for restricted stock units Payments Related to Tax Withholding for Share-based Compensation Other financing activities Proceeds from (Payments for) Other Financing Activities Net cash used in financing activities Net Cash Provided by (Used in) Financing Activities Effect of exchange rate changes on cash Effect of Exchange Rate on Cash and Cash Equivalents Net decrease in cash, cash equivalents and restricted cash Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect Cash, cash equivalents and restricted cash at the end of the period Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents Capital expenditure adjustments included in accounts payable and accrued liabilities Change in Capital Expenditures Incurred but Not Paid Change in Capital Expenditures Incurred but Not Paid Reconciliation of the numerators and denominators in the computation of basic and diluted net loss per share Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Statement of Comprehensive Income [Abstract] Other comprehensive (loss) income: Other Comprehensive Income (Loss), Net of Tax [Abstract] Unrealized gain on marketable securities, net of tax Other Comprehensive Income (Loss), Securities, Available-for-Sale, Unrealized Holding Gain (Loss) Arising During Period, after Tax Foreign currency translation adjustment, including intra-entity foreign currency transactions that are of a long-term investment nature Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Gain (Loss), before Reclassification and Tax Reclassification adjustments, net of tax: AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward] Amortization of pension actuarial loss Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), Reclassification Adjustment from AOCI, after Tax Other comprehensive (loss) income Other Comprehensive Income (Loss), Net of Tax Total comprehensive loss Comprehensive Income (Loss), Net of Tax, Attributable to Parent Disaggregation of Revenue Disaggregation of Revenue [Table Text Block] Subsequent Events [Abstract] SUBSEQUENT EVENT Subsequent Events [Text Block] Condensed Balance Sheet Condensed Balance Sheet [Table Text Block] Condensed Statement of Comprehensive Income Condensed Statement of Comprehensive Income [Table Text Block] Condensed Cash Flow Statement Condensed Cash Flow Statement [Table Text Block] Equity [Abstract] Schedule of Stock by Class [Table] Schedule of Stock by Class [Table] Stock Repurchase Program [Axis] Share Repurchase Program [Axis] Stock Repurchase Program [Domain] Share Repurchase Program [Domain] November 2016 Program November 2016 Program [Member] November 2016 Program [Member] May 2018 Program May 2018 Program [Member] May 2018 Program [Member] Class of Stock [Line Items] Class of Stock [Line Items] Stock Repurchase Program, Authorized Amount Stock Repurchase Program, Authorized Amount Stock Repurchased During Period, Shares Stock Repurchased During Period, Shares Stock Repurchased During Period, Value Stock Repurchased During Period, Value Stock Repurchase Program, Remaining Authorized Repurchase Amount Stock Repurchase Program, Remaining Authorized Repurchase Amount Statement of Financial Position [Abstract] Statement [Table] Statement [Table] Consolidation Items [Axis] Consolidation Items [Axis] Consolidation Items [Domain] Consolidation Items [Domain] Eliminations and Reclassifications Consolidation, Eliminations [Member] Consolidated Entities [Axis] Consolidated Entities [Axis] Consolidated Entities [Domain] Consolidated Entities [Domain] Guarantor Subsidiaries Guarantor Subsidiaries [Member] Non-Guarantor Subsidiaries Non-Guarantor Subsidiaries [Member] Parent Company Parent Company [Member] Statement [Line Items] Statement [Line Items] Cash and cash equivalents Cash and Cash Equivalents, at Carrying Value Short-term investments (Note 5) Short-term Investments Accounts receivable, less allowance Accounts Receivable, Net, Current Intercompany accounts and notes receivable Intercompany receivables Intercompany receivables Inventories Prepaid expenses Prepaid Expense, Current Other receivables Other Receivables Other current assets Other Assets, Current Total current assets Assets, Current Property and equipment, net Property, Plant and Equipment, Net Goodwill Goodwill Investment in Subsidiaries Intercompany Notes Receivable, Long-Term Intercompany Notes Receivable, Long-Term Long-term Investments Long-term Investments Investment in subsidiaries Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures Other non-current assets Other Assets, Noncurrent Total assets Assets Accounts payable Accounts Payable, Current Intercompany accounts and notes payable Intercompany accounts and notes payable Intercompany accounts and notes payable Accrued liabilities Accrued Liabilities, Current Other current liabilities Other Liabilities, Current Total current liabilities Liabilities, Current Long-term debt Long-term Debt Deferred tax liabilities Deferred Tax Liabilities, Net, Noncurrent Intercompany accounts and notes payable, long-term Intercompany accounts and notes payable, long-term Intercompany accounts and notes payable, long-term Other long-term liabilities (Note 10) Other Liabilities, Noncurrent Total liabilities Liabilities Total stockholders’ equity Stockholders' Equity Attributable to Parent Total liabilities and stockholders’ equity Liabilities and Equity Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Table] Fair Value Measurements, Recurring and Nonrecurring [Table] Financial Instrument [Axis] Financial Instrument [Axis] Financial Instruments [Domain] Financial Instruments [Domain] Auction Rate Securities [Member] Auction Rate Securities [Member] Money Market Funds [Member] Money Market Funds [Member] Measurement Frequency [Axis] Measurement Frequency [Axis] Fair Value, Measurement Frequency [Domain] Fair Value, Measurement Frequency [Domain] Recurring [Member] Fair Value, Measurements, Recurring [Member] Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV [Domain] Quoted Prices In Active Markets For Identical Assets (Level 1) [Member] Fair Value, Inputs, Level 1 [Member] Significant Other Observable Inputs (Level 2) [Member] Fair Value, Inputs, Level 2 [Member] Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Money Market Funds Cash Equivalents, at Carrying Value Available-for-sale securities Debt Securities, Available-for-sale Commercial Paper Commercial Paper Invested funds in deferred compensation plan Deferred Compensation Plan Assets Total assets measured at fair value Assets, Fair Value Disclosure Deferred compensation plan obligation Deferred Compensation Liability, Current and Noncurrent Total liabilities measured at fair value Financial and Nonfinancial Liabilities, Fair Value Disclosure Components of inventories Schedule of Inventory, Current [Table Text Block] Organization, Consolidation and Presentation of Financial Statements [Abstract] Equity Securities without Readily Determinable Fair Value [Policy Text Block] Equity Securities without Readily Determinable Fair Value [Policy Text Block] Revenue Recognition Policy Revenue Recognition, Policy [Policy Text Block] Income Tax Policy Income Tax, Policy [Policy Text Block] Fair Value Measurements Policy Fair Value Measurement, Policy [Policy Text Block] Operating Segment Policy Segment Reporting, Policy [Policy Text Block] Fair Value of Financial Instruments, Policy [Policy Text Block] Fair Value of Financial Instruments, Policy [Policy Text Block] Revenue for product and services over time as a percent of total revenue (less than) Revenue for product and services over time as a percent of total revenue Revenue for product and services over time as a percent of total revenue Cumulative effect of adoption as a percentage of revenue (less than) Cumulative effect of adoption as a percentage of revenue Cumulative effect of adoption as a percentage of revenue Rebates as percentage of sales (less than) Rebates As Percentage Of Sales1 Rebates As Percentage Of Sales1 Remaining unsatisfied performance obligations with an original duration of greater than one year Revenue, Remaining Performance Obligation, Amount Income tax expense Effective tax rate Effective Income Tax Rate Reconciliation, Percent Gross unrecognized tax benefits Unrecognized Tax Benefits Schedule of long-term debt as adjusted for subsequent event Long-term Debt [Text Block] Schedule of Available-for-sale Securities [Table] Schedule of Available-for-sale Securities [Table] Debt Securities [Member] Debt Securities [Member] Schedule of Expected Maturities of Available-for-Sale Debt Securities[Line Items] Debt Securities, Available-for-sale [Line Items] Cost of investments in debt securities due in less than one year Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, within One Year, Amortized Cost Cost of investments in debt securities due after ten years Debt Securities, Available-for-sale, Allocated and Single Maturity Date, Maturity, after 10 Years, Amortized Cost Cost Debt Securities, Available-for-sale, Amortized Cost Estimated fair value of investments in debt securities due in less than one year Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, within One Year, Fair Value Estimated fair value of investments in debt securities due after ten years Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, after 10 Years, Fair Value Estimated fair value DEBT Debt Disclosure [Text Block] BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block] Interest expense Other expense (income) Income in subsidiaries Income (Loss) from Subsidiaries, Net of Tax Comprehensive Income (Loss), Net of Tax, Attributable to Parent Equity Securities without Readily Determinable Fair Value, Amount Equity Securities without Readily Determinable Fair Value, Amount Subsequent Event [Table] Subsequent Event [Table] Scenario [Axis] Scenario [Axis] Scenario, Unspecified [Domain] Scenario, Unspecified [Domain] As adjusted for subsequent event Pro Forma [Member] 6.75% Senior Notes due 2023 6.75% Senior Notes due 2023 [Member] 6.75% Senior Notes due 2023 [Member] 7.00% Senior Notes due 2025 7.00% Senior Notes due 2025 [Member] 7.00% Senior Notes due 2025 [Member] 5.5% Senior Notes due 2026 5.5% Senior Notes due 2026 [Member] 5.5% Senior Notes due 2026 [Member] Subsequent Event Subsequent Event [Line Items] Unamortized Debt Issuance Expense Unamortized Debt Issuance Expense Reconciliation of Operating Profit (Loss) from Segments to Consolidated [Table] Reconciliation of Operating Profit (Loss) from Segments to Consolidated [Table] Operating Segments Operating Segments [Member] All other Corporate, Non-Segment [Member] Statement, Business Segments [Axis] Segments [Axis] Segments [Domain] Segments [Domain] MP Mobile Products [Member] Mobile Products [Member] IDP Infrastructure and Defense Products [Member] Infrastructure and Defense Products [Member] Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] Summary of details of reportable segments Reconciliation of Operating Profit (Loss) from Segments to Consolidated [Abstract] Revenue: Segment Reporting Information, Revenue for Reportable Segment [Abstract] Income from operations: Segment Reporting Information, Operating Income (Loss) [Abstract] Income (loss) from operations Loss before income taxes Subsequent Event Type [Axis] Subsequent Event Type [Axis] Subsequent Event Type [Domain] Subsequent Event Type [Domain] Subsequent Event [Member] Subsequent Event [Member] Range [Axis] Range [Axis] Range [Domain] Range [Domain] Minimum [Member] Minimum [Member] Maximum [Member] Maximum [Member] Lender Name [Axis] Lender Name [Axis] Line of Credit Facility, Lender [Domain] Line of Credit Facility, Lender [Domain] Bank of America Syndicate [Member] Bank of America Syndicate [Member] Bank of America Syndicate [Member] Credit Facility [Axis] Credit Facility [Axis] Credit Facility [Domain] Credit Facility [Domain] Credit Agreement [Member] Credit Agreement [Member] Credit Agreement [Member] Senior Delayed Draw Term Loan [Member] Senior Delayed Draw Term Loan [Member] Senior Delayed Draw Term Loan [Member] Revolving Credit Facility [Member] Revolving Credit Facility [Member] Standby Letters of Credit [Member] Standby Letters of Credit [Member] Swingline Loan [Member] Bridge Loan [Member] Senior notes Senior Notes [Member] Senior Delayed Draw Term Loan, Maximum Amount Senior Delayed Draw Term Loan, Maximum Amount Senior Delayed Draw Term Loan, Maximum Amount Debt Instrument, Face Amount Stated Interest Rate Debt Instrument, Interest Rate, Stated Percentage Repayments of Senior Debt Repayments of Senior Debt Senior notes, redemption percentage, actual Senior notes, redemption percentage, actual Senior notes, redemption percentage, actual Gain (Loss) on Extinguishment of Debt Gain (Loss) on Extinguishment of Debt Tender Offer Cap Tender Offer Cap Tender Offer Cap - maximum amount available to be repurchased under a tender offer Debt Instrument, Redemption Price, Percentage of Principal Amount Redeemed Debt Instrument, Redemption Price, Percentage of Principal Amount Redeemed Debt Instrument, Redemption Price, Percentage Debt Instrument, Redemption Price, Percentage Proceeds from Lines of Credit Proceeds from Lines of Credit Interest Expense, Borrowings Interest Expense, Borrowings Interest Costs Capitalized Interest Costs Capitalized Long-term Debt, Fair Value Long-term Debt, Fair Value Interest Paid, Including Capitalized Interest, Operating and Investing Activities Interest Paid, Including Capitalized Interest, Operating and Investing Activities Line of Credit Facility, Maximum Borrowing Capacity Line of Credit Facility, Maximum Borrowing Capacity Line of Credit Facility, Maximum amount of increase that may be requested Line of Credit Facility, Maximum amount of increase that may be requested Line of Credit Facility, Maximum amount of increase that may be requested Proceeds from debt issuances Proceeds from (Repayments of) Debt Net Cash Provided by (Used in) Operating Activities Payments to Acquire Property, Plant, and Equipment Net transactions with related parties, investing Net transactions with related parties, investing Net transactions with related parties, investing Proceeds from the issuance of common stock Tax withholding paid on behalf of employees for restricted stock units Net transactions with related parties Net transactions with related parties Net transactions with related parties Effect of Exchange Rate on Cash and Cash Equivalents Cash, cash equivalents and restricted cash ASSETS Assets [Abstract] Current assets: Assets, Current [Abstract] Cash and cash equivalents Accounts receivable, less allowance of $148 and $134 as of June 30, 2018 and March 31, 2018, respectively Inventories (Note 3) Property and equipment, net of accumulated depreciation of $950,018 at June 30, 2018 and $911,910 at March 31, 2018 Goodwill Intangible assets, net of accumulated amortization of $1,844,821 at June 30, 2018 and $1,711,520 at March 31, 2018 (Note 4) Long-term investments (Note 5) LIABILITIES AND STOCKHOLDERS’ EQUITY Liabilities and Equity [Abstract] Current liabilities: Liabilities, Current [Abstract] Long-term debt (Note 6) Deferred tax liabilities (Note 10) Stockholders’ equity: Stockholders' Equity Attributable to Parent [Abstract] Preferred stock, $.0001 par value; 5,000 shares authorized; no shares issued and outstanding Preferred Stock, Value, Issued Common stock and additional paid-in capital, $.0001 par value; 405,000,000 shares authorized; 125,598,000 and 126,322,000 shares issued and outstanding at June 30, 2018 and March 31, 2018, respectively Common Stock, Value, Issued Accumulated other comprehensive loss, net of tax Accumulated Other Comprehensive Income (Loss), Net of Tax Accumulated deficit Retained Earnings (Accumulated Deficit) New Accounting Pronouncements and Changes in Accounting Principles [Abstract] RECENT ACCOUNTING PRONOUNCEMENTS New Accounting Pronouncements and Changes in Accounting Principles [Text Block] First 90-day period Each additional 90-day period Weighted Average [Member] Maximum default interest rate increase Debt, Interest Rate, Default Increase, Percentage Debt, Interest Rate, Default Increase, Percentage Debt, Interest Rate, Default Increase, Percentage Available-for-sale debt securities Available-for-sale Securities [Table Text Block] Expected distribution of available-for-sale debt securities Investments Classified by Contractual Maturity Date [Table Text Block] Fair value of the financial assets measured at fair value on a recurring basis Fair Value, Assets Measured on Recurring Basis [Table Text Block] Summary of details of reportable segments Reconciliation of Operating Profit (Loss) from Segments to Consolidated [Table Text Block] Summary of reconciliation of "All other" category Segment Reporting Information Other [Table Text Block] Segment reporting information other. Disaggregation of Revenue [Table] Disaggregation of Revenue [Table] Geographical [Axis] Geographical [Axis] Geographical [Domain] Geographical [Domain] China CHINA Taiwan TAIWAN, PROVINCE OF CHINA United States UNITED STATES Other Asia Other Asia [Member] Other Asia [Member] Europe Europe [Member] Other Countries Other Countries [Member] Other Countries [Member] Disaggregation of Revenue Disaggregation of Revenue [Line Items] Document and Entity Information [Abstract] Document and entity information. Entity Registrant Name Entity Registrant Name Entity Central Index Key Entity Central Index Key Document Type Document Type Amendment Flag Amendment Flag Document Fiscal Year Focus Document Fiscal Year Focus Document Fiscal Period Focus Document Fiscal Period Focus Current Fiscal Year End Date Current Fiscal Year End Date Entity Filer Category Entity Filer Category Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Schedule of Segment Reporting Information, by Segment [Table] Schedule of Segment Reporting Information, by Segment [Table] Segment Reporting Information [Line Items] Segment Reporting Information [Line Items] Reconciliation of "All other" category: Segment Reporting Information Other [Abstract] Segment reporting information other. Stock-based compensation expense Amortization of intangible assets Acquisition and integration related costs Business Combination, Acquisition And Integration related costs Business Combination, Acquisition And Integration related costs Restructuring charges Restructuring and disposal costs Restructuring and disposal costs Start-up costs Start-up costs Start-up costs Other (expense) income (including (loss) gain on assets and other miscellaneous corporate overhead) Other Unallocated Income Expense Other unallocated income expense. Loss from operations for “All other” Numerator: Earnings Per Share Reconciliation [Abstract] Numerator for basic and diluted net loss per share — net loss available to common stockholders Denominator: Denominator [Abstract] Denominator. Denominator for basic net loss per share — weighted average shares Effect of dilutive securities: Incremental Weighted Average Shares Attributable to Dilutive Effect [Abstract] Stock-based awards Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements Denominator for diluted net loss per share — adjusted weighted average shares and assumed conversions Basic net loss per share (in dollars per share) Diluted net loss per share (in dollars per share) Commercial Paper [Member] Commercial Paper [Member] Money Market Funds [Member] Schedule of Available-for-sale debt securities Available-for-sale debt securities Debt Securities, Available-for-sale [Abstract] Cost basis Available-for-sale Securities, Amortized Cost Basis Gross unrealized gains Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax Gross unrealized losses Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax Estimated fair value Available-for-sale Securities Debt Instrument [Axis] Debt Instrument [Axis] Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Variable Rate [Axis] Variable Rate [Axis] Variable Rate [Domain] Variable Rate [Domain] Debt Instrument, Redemption, Period [Axis] Debt Instrument, Redemption, Period [Axis] Debt Instrument, Redemption, Period [Domain] Debt Instrument, Redemption, Period [Domain] Allowance for accounts receivable Allowance for Doubtful Accounts Receivable, Current Property and equipment, accumulated depreciation Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Intangible assets, accumulated amortization Finite-Lived Intangible Assets, Accumulated Amortization Preferred stock, par value Preferred Stock, No Par Value Preferred stock, shares authorized Preferred Stock, Shares Authorized Preferred stock, shares issued Preferred Stock, Shares Issued Preferred stock, shares outstanding Preferred Stock, Shares Outstanding Common stock, par value Common Stock, No Par Value Common stock, shares authorized Common Stock, Shares Authorized Common stock, shares issued Common Stock, Shares, Issued Common stock, shares outstanding Common Stock, Shares, Outstanding U.S Tax Cuts and Jobs Act New Accounting Pronouncements or Change in Accounting Principle [Table] Income Tax Authority [Axis] Income Tax Authority [Axis] Income Tax Authority [Domain] Income Tax Authority [Domain] U.S. Tax Cuts and Jobs Act, Effective 2018 [Member] U.S. Tax Cuts and Jobs Act, Effective 2018 [Member] U.S. Tax Cuts and Jobs Act, Effective 2018 [Member] U.S. Tax Cuts and Jobs Act [Line Items] U.S Tax Cuts and Jobs Act [Line Items] U.S Tax Cuts and Jobs Act [Line Items] Income tax expense Estimated repatriation tax expense Effective Income Tax Rate Reconciliation, Repatriation of Foreign Earnings, Amount Estimated deferred tax benefit Measurement period adjustment, income tax expense (benefit) Measurement period adjustment, income tax expense (benefit) Measurement period adjustment, income tax expense (benefit) Increase (decrease) in Transitional Repatriation Tax liability Increase (decrease) in Transitional Repatriation Tax liability Increase (decrease) in Transitional Repatriation Tax liability Increase (decrease) in deferred tax assets Increase (decrease) in deferred tax assets Increase (decrease) in deferred tax assets STOCK REPURCHASES Stockholders' Equity Note Disclosure [Text Block] INTANGIBLE ASSETS Goodwill and Intangible Assets Disclosure [Text Block] NET LOSS PER SHARE Earnings Per Share [Text Block]