Debt Disclosure [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] Senior Notes Senior Notes [Member] Debt Instrument [Axis] Debt Instrument [Axis] Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] 2023 Notes Senior Notes Due 2023 [Member] Senior Notes Due 2023 [Member] 2028 Notes Senior Notes Due 2028 [Member] Senior Notes Due 2028 [Member] Debt Instrument [Line Items] Debt Instrument [Line Items] Aggregate principal amount Debt Instrument, Face Amount Stated interest rate Debt Instrument, Interest Rate, Stated Percentage Effective interest rate Debt Instrument, Interest Rate, Effective Percentage Redemption price percentage Debt Instrument, Redemption Price, Percentage Term Loan Term Loan [Member] Term Loan [Member] Line of Credit Line of Credit [Member] Credit Facility [Axis] Credit Facility [Axis] Credit Facility [Domain] Credit Facility [Domain] Revolving Credit Facility Revolving Credit Facility [Member] Extinguishment of Debt [Axis] Extinguishment of Debt [Axis] Extinguishment of Debt, Type [Domain] Extinguishment of Debt, Type [Domain] Bridge Loan Bridge Loan [Member] Borrowing capacity Line of Credit Facility, Maximum Borrowing Capacity Amount of debt extinguished Extinguishment of Debt, Amount Interest expense Interest Expense, Debt Income Tax Disclosure [Abstract] Income Taxes [Table] Income Taxes [Table] Income Taxes [Table] Scenario [Axis] Scenario [Axis] Scenario [Domain] Scenario [Domain] Forecast Forecast [Member] Legal Entity [Axis] Legal Entity [Axis] Entity [Domain] Entity [Domain] Foreign Subsidiaries Foreign Subsidiaries [Member] Foreign Subsidiaries [Member] Income Taxes [Line Items] Income Taxes [Line Items] Income Taxes [Line Items] Current income tax expense (benefit) Current Income Tax Expense (Benefit) Unrecognized tax benefits decrease Unrecognized Tax Benefits, Period Increase (Decrease) Tax due on amounts previously considered permanently reinvested Taxes Due On Amounts Previously Considered Permanently Reinvested Taxes Due On Amounts Previously Considered Permanently Reinvested Gross amounts of unrecognized tax benefits Unrecognized Tax Benefits Increases resulting from acquisition Unrecognized Tax Benefits, Increase Resulting from Acquisition Tax benefit to be recorded if unrecognized tax benefit is realized subsequently Income Tax Benefit To Be Recorded If Unrecognized Tax Benefits Is Realized Subsequently Income Tax Benefit To Be Recorded If Unrecognized Tax Benefits Is Realized Subsequently Unrecognized tax benefit, interest and penalties accrued Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued Uncertain tax positions, decrease from the lapse of statutes of limitation in various jurisdictions during next 12 months Decrease in Unrecognized Tax Benefits is Reasonably Possible Tax incentives, decrease in foreign taxes Income Tax Holiday, Aggregate Dollar Amount Tax incentives, effect on net income per share (less than) (in usd per share) Income Tax Holiday, Income Tax Benefits Per Share Cash, cash equivalents and short-term investments Cash, Cash Equivalents, and Short-term Investments Undistributed earnings of foreign subsidiaries Undistributed Earnings of Foreign Subsidiaries Statement of Financial Position [Abstract] Common shares, par value (in usd per share) Common Stock, Par or Stated Value Per Share Statement of Comprehensive Income [Abstract] Net income (loss) Net Income (Loss) Attributable to Parent Other comprehensive income, net of tax: Other Comprehensive Income (Loss), Net of Tax [Abstract] Net change in unrealized gain (loss) on marketable securities Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, Net of Tax, Portion Attributable to Parent Net change in unrealized gain (loss) on cash flow hedges Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Net of Tax, Portion Attributable to Parent Other comprehensive income, net of tax Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent Comprehensive income (loss), net of tax Comprehensive Income (Loss), Net of Tax, Attributable to Parent Earnings Per Share [Abstract] Numerator: Net Income (Loss) Attributable to Parent [Abstract] Denominator: Weighted Average Number of Shares Outstanding, Basic [Abstract] Weighted average shares — basic (in shares) Weighted Average Number of Shares Outstanding, Basic Effect of dilutive securities: Weighted Average Number of Shares Outstanding Reconciliation [Abstract] Share-based awards (in shares) Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements Weighted average shares — diluted (in shares) Weighted Average Number of Shares Outstanding, Diluted Net income per share: Earnings Per Share, Basic and Diluted [Abstract] Basic (in usd per share) Earnings Per Share, Basic Diluted (in usd per share) Earnings Per Share, Diluted Leases [Abstract] Weighted-average remaining lease term (years) Operating Lease, Weighted Average Remaining Lease Term Weighted-average discount rate Operating Lease, Weighted Average Discount Rate, Percent Right-of-use assets Operating Lease, Right-of-Use Asset Operating lease liabilities Operating Lease, Liability Goodwill and Intangible Assets Disclosure [Abstract] Schedule of Indefinite-Lived Intangible Assets [Table] Schedule of Indefinite-Lived Intangible Assets [Table] Business Acquisition [Axis] Business Acquisition [Axis] Business Acquisition, Acquiree [Domain] Business Acquisition, Acquiree [Domain] Aquantia Aquantia, Corp. [Member] Aquantia, Corp. [Member] Finite-Lived 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 contracts and related relationships Customer Contracts And Relationships [Member] Customer Contracts And Relationships [Member] IPR&D In Process Research and Development [Member] Statistical Measurement [Axis] Statistical Measurement [Axis] Statistical Measurement [Domain] Statistical Measurement [Domain] Minimum Minimum [Member] Maximum Maximum [Member] Indefinite-lived Intangible Assets [Line Items] Indefinite-lived Intangible Assets [Line Items] Preliminary Estimated Asset Fair Value Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill Weighted Average Useful Life (Years) Acquired Finite-lived Intangible Assets, Weighted Average Useful Life Schedule of Finite-Lived Intangible Assets by Major Class Schedule of Finite-Lived Intangible Assets [Table Text Block] Schedule of Indefinite-Lived Intangible Assets Schedule of Indefinite-Lived Intangible Assets [Table Text Block] Schedule of Finite-Lived Intangible Assets, Future Amortization Expense Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block] Commitments and Contingencies Disclosure [Abstract] Commitments and Contingencies Commitments and Contingencies Disclosure [Text Block] Net Income Per Share Earnings Per Share [Text Block] Income Tax Income Tax Disclosure [Text Block] Revenue from Contract with Customer [Abstract] Disaggregation of Revenue [Table] Disaggregation of Revenue [Table] Contract with Customer, Sales Channel [Axis] Contract with Customer, Sales Channel [Axis] Contract with Customer, Sales Channel [Domain] Contract with Customer, Sales Channel [Domain] Direct customers Sales Channel, Directly to Consumer [Member] Distributors Sales Channel, Through Intermediary [Member] Concentration Risk Benchmark [Axis] Concentration Risk Benchmark [Axis] Concentration Risk Benchmark [Domain] Concentration Risk Benchmark [Domain] Net revenue Revenue Benchmark [Member] Disaggregation of Revenue [Line Items] Disaggregation of Revenue [Line Items] Net revenue Revenue from Contract with Customer, Excluding Assessed Tax % of Total Concentration Risk, Percentage Organization, Consolidation and Presentation of Financial Statements [Abstract] Authorized repurchase amount Stock Repurchase Program, Authorized Amount Remaining available for future share repurchases (in shares) Stock Repurchase Program, Remaining Authorized Repurchase Amount Number of common shares repurchased and retired during period (in shares) Stock Repurchased and Retired During Period, Shares Value of common shares repurchased and retired during period Stock Repurchased and Retired During Period, Value Business Combinations [Abstract] Schedule of Business Acquisitions, by Acquisition [Table] Schedule of Business Acquisitions, by Acquisition [Table] Cavium Cavium, Inc. [Member] Cavium, Inc. [Member] Income Statement Location [Axis] Income Statement Location [Axis] Income Statement Location [Domain] Income Statement Location [Domain] Selling, General and Administrative Selling, General and Administrative Expenses [Member] Balance Sheet Location [Axis] Balance Sheet Location [Axis] Balance Sheet Location [Domain] Balance Sheet Location [Domain] Prepaid Expenses and Other Current Assets Prepaid Expenses and Other Current Assets [Member] Other Non-current Assets Other Noncurrent Assets [Member] Long-term Debt Long-term Debt [Member] Business Acquisition [Line Items] Business Acquisition [Line Items] Cash consideration (in usd per share) Business Combination, Consideration Transferred, Equity Interests Issued and Issuable, Cash Paid Per Acquiree Share Business Combination, Consideration Transferred, Equity Interests Issued and Issuable, Cash Paid Per Acquiree Share Acquisition related costs Business Combination, Acquisition Related Costs Adjustment to inventories acquired Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Inventory Transaction costs Business Acquisition, Transaction Costs Share-based compensation expense Share-based Payment Arrangement, Expense Consideration paid Business Combination, Consideration Transferred Debt financing costs Debt Issuance Costs, Gross Equity issuance costs Adjustments to Additional Paid in Capital, Stock Issued, Issuance Costs Share-based awards (in shares) Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Current portion of lease liabilities Operating Lease, Liability, Current Non-current portion of lease liabilities Operating Lease, Liability, Noncurrent Total lease liabilities Line of Credit Facility [Table] Line of Credit Facility [Table] Variable Rate [Axis] Variable Rate [Axis] Variable Rate [Domain] Variable Rate [Domain] LIBOR London Interbank Offered Rate (LIBOR) [Member] Line of Credit Facility [Line Items] Line of Credit Facility [Line Items] Drawings from facility Proceeds from Lines of Credit Total borrowings Long-term Debt, Gross Debt term Debt Instrument, Term Basis spread on variable rate (as a percent) Debt Instrument, Basis Spread on Variable Rate Amount available for draw Line of Credit Facility, Remaining Borrowing Capacity Unused commitment fee percentage Line of Credit Facility, Unused Capacity, Commitment Fee Percentage Property, Plant and Equipment [Table] Property, Plant and Equipment [Table] Property, Plant and Equipment, Type [Axis] Property, Plant and Equipment, Type [Axis] Property, Plant and Equipment, Type [Domain] Property, Plant and Equipment, Type [Domain] Machinery and equipment Machinery and Equipment [Member] Land, buildings, and leasehold improvements Land, Buildings and Improvements [Member] Computer software Software and Software Development Costs [Member] Furniture and fixtures Furniture and Fixtures [Member] Property, Plant and Equipment [Line Items] Property, Plant and Equipment [Line Items] Property and equipment, gross Property, Plant and Equipment, Gross Less: Accumulated depreciation and amortization Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Total property and equipment, net Property, Plant and Equipment, Net Restructuring and Related Activities [Abstract] Restructuring and other related charges Restructuring Costs and Asset Impairment Charges Inventories: Inventory, Net [Abstract] Work-in-process Inventory, Work in Process, Net of Reserves Finished goods Inventory, Finished Goods, Net of Reserves Total inventories Inventory, Net Schedule of Inventories Schedule of Inventory, Current [Table Text Block] Schedule of Property and Equipment, Net Property, Plant and Equipment [Table Text Block] Schedule of Current Accrued Liabilities Schedule of Accrued Liabilities [Table Text Block] Changes in Accumulated Other Comprehensive Income (Loss) by Components Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] Income Statement [Abstract] Cost of goods sold Cost of Goods and Services Sold Gross profit Gross Profit Operating expenses: Costs and Expenses [Abstract] Research and development Research and Development Expense Selling, general and administrative Selling, General and Administrative Expense Restructuring related charges Total operating expenses Costs and Expenses Operating income (loss) Operating Income (Loss) Interest income Investment Income, Nonoperating Interest expense Interest Expense Other income (loss), net Other Nonoperating Income (Expense) Interest and other income (loss), net Nonoperating Income (Expense) And Interest Income (Expense) Nonoperating Income (Expense) And Interest Income (Expense) Income (loss) before income taxes Income (Loss) Attributable to Parent, before Tax Provision for income taxes Income Tax Expense (Benefit) Net income (loss) Net income (loss) per share - Basic (in usd per share) Net income (loss) per share - Diluted (in usd per share) Weighted average shares: Weighted Average Number of Shares Outstanding, Diluted [Abstract] Basic (in shares) Diluted (in shares) Accounting Changes and Error Corrections [Abstract] Recent Accounting Pronouncements New Accounting Pronouncements and Changes in Accounting Principles [Text Block] Supplemental Financial Information Additional Financial Information Disclosure [Text Block] Subsequent Event Type [Axis] Subsequent Event Type [Axis] Subsequent Event Type [Domain] Subsequent Event Type [Domain] Subsequent Event Subsequent Event [Member] Avera Avera Semiconductor [Member] Avera Semiconductor [Member] Cash consideration Payments to Acquire Businesses, Gross ASSETS Assets [Abstract] Current assets: Assets, Current [Abstract] Cash and cash equivalents Cash and Cash Equivalents, at Carrying Value Accounts receivable, net Accounts Receivable, after Allowance for Credit Loss, Current Inventories Prepaid expenses and other current assets Prepaid Expense and Other Assets, Current Assets held for sale Disposal Group, Including Discontinued Operation, Assets, Current Total current assets Assets, Current Property and equipment, net Goodwill Goodwill Acquired intangible assets, net Intangible Assets, Net (Excluding Goodwill) Other non-current assets Other Assets, Noncurrent Total assets Assets LIABILITIES AND SHAREHOLDERS’ EQUITY Liabilities and Equity [Abstract] Current liabilities: Liabilities, Current [Abstract] Accounts payable Accounts Payable, Current Accrued liabilities Accrued And Contract Liabilities, Current Accrued And Contract Liabilities, Current Accrued employee compensation Employee-related Liabilities, Current Liabilities held for sale Disposal Group, Including Discontinued Operation, Liabilities, Current Total current liabilities Liabilities, Current Long-term debt Long-term Debt, Excluding Current Maturities Non-current income taxes payable Accrued Income Taxes, Noncurrent Deferred tax liabilities Deferred Income Tax Liabilities, Net Other non-current liabilities Other Liabilities, Noncurrent Total liabilities Liabilities Commitments and contingencies (Note 10) Commitments and Contingencies Shareholders’ equity: Stockholders' Equity Attributable to Parent [Abstract] Common shares, $0.002 par value Common Stock, Value, Issued Additional paid-in capital Additional Paid in Capital, Common Stock Accumulated other comprehensive income Accumulated Other Comprehensive Income (Loss), Net of Tax Retained earnings Retained Earnings (Accumulated Deficit) Total shareholders’ equity Stockholders' Equity Attributable to Parent Total liabilities and shareholders’ equity Liabilities and Equity Notes Revolving Credit Facility Less: Unamortized debt discount and issuance cost Debt Issuance Costs, Net Net carrying amount of debt Long-term Debt Less: Current portion Long-term Debt, Current Maturities Non-current portion Debt Debt Disclosure [Text Block] 2020 Operating Leases, Future Minimum Payments Due, Next Twelve Months 2021 Operating Leases, Future Minimum Payments, Due in Two Years 2022 Operating Leases, Future Minimum Payments, Due in Three Years 2023 Operating Leases, Future Minimum Payments, Due in Four Years 2024 Operating Leases, Future Minimum Payments, Due in Five Years Thereafter Operating Leases, Future Minimum Payments, Due Thereafter Total Operating Leases, Future Minimum Payments Due Accumulated Other Comprehensive Income (Loss) [Table] Accumulated Other Comprehensive Income (Loss) [Table] Equity Components [Axis] Equity Components [Axis] Equity Component [Domain] Equity Component [Domain] Unrealized Gain (Loss) on Cash Flow Hedges Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent [Member] Unrealized Gain (Loss) on Marketable Securities AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-sale, Parent [Member] Accumulated Other Comprehensive Income (Loss) [Line Items] Accumulated Other Comprehensive Income (Loss) [Line Items] Increase (Decrease) in AOCI Attributable to Parent, Net of Tax [Roll Forward] AOCI Attributable to Parent, Net of Tax [Roll Forward] Balance at beginning of period Other comprehensive income (loss) before reclassifications OCI, before Reclassifications, Net of Tax, Attributable to Parent Amounts reclassified from accumulated other comprehensive income (loss) Reclassification from AOCI, Current Period, Net of Tax, Attributable to Parent Balance at end of period Schedule of Goodwill [Table] Schedule of Goodwill [Table] Disposal Group Name [Axis] Disposal Group Name [Axis] Disposal Group Name [Domain] Disposal Group Name [Domain] Wi-Fi Business Wi-Fi Connectivity Business [Member] Wi-Fi Connectivity Business [Member] Disposal Group Classification [Axis] Disposal Group Classification [Axis] Disposal Group Classification [Domain] Disposal Group Classification [Domain] Held-for-sale Disposal Group, Held-for-sale, Not Discontinued Operations [Member] Business Acquisition [Axis] Goodwill [Line Items] Goodwill [Line Items] Schedule of Finite-Lived Intangible Assets [Table] Schedule of Finite-Lived Intangible Assets [Table] IPR&D Minimum Maximum Finite-Lived Intangible Assets [Line Items] Finite-Lived Intangible Assets [Line Items] Acquired intangible assets Weighted average remaining amortization period (years) Amortization and write off of acquired intangible assets Amortization of Intangible Assets Schedule of Lease Expense and Supplemental Cash Flow Information Lease, Cost [Table Text Block] Supplemental Balance Sheet Information Assets and Liabilities, Lessee [Table Text Block] Assets and Liabilities, Lessee [Table Text Block] Maturities of Operating Lease Liabilities Lessee, Operating Lease, Liability, Maturity [Table Text Block] Future Minimum Lease Payments, Net of Estimated Sublease Income Under Previous Accounting Standard Schedule of Future Minimum Rental Payments for Operating Leases [Table Text Block] Schedule of Average Lease Terms And Discount Rates Schedule of Average Lease Terms And Discount Rates [Table Text Block] Schedule of Average Lease Terms And Discount Rates [Table Text Block] Summary of Total Merger Consideration Schedule of Business Acquisitions, by Acquisition [Table Text Block] Supplemental Pro Forma Financial Information Business Acquisition, Pro Forma Information [Table Text Block] Purchase Price Allocation Schedule of Recognized Identified Assets Acquired and Liabilities Assumed [Table Text Block] Disposal Groups, Including Discontinued Operations [Table] Disposal Groups, Including Discontinued Operations [Table] Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] Proceeds from divestiture of businesses Proceeds from Divestiture of Businesses Number of employees employed by disposal group Restructuring and Related Cost, Expected Number of Positions Eliminated Assets Disposal Group, Including Discontinued Operation, Assets Inventory Disposal Group, Including Discontinued Operation, Inventory Property, plant and equipment Disposal Group, Including Discontinued Operation, Property, Plant and Equipment Goodwill Disposal Group, Including Discontinued Operation, Goodwill Right-of-use assets Disposal Group, Including Discontinued Operation, Operating Lease, Right-Of-Use Asset Disposal Group, Including Discontinued Operation, Operating Lease, Right-Of-Use Asset Liabilities Disposal Group, Including Discontinued Operation, Liabilities Accrued liabilities: Accrued Liabilities, Current [Abstract] Contract liabilities Contract with Customer, Liability, Current Technology license obligations Capital Lease Obligations, Current Lease liabilities Accrued income tax payable Accrued Income Taxes, Current Other Other Accrued Liabilities, Current Total accrued liabilities Revenue Revenue from Contract with Customer [Text Block] Fair Value Disclosures [Abstract] Fair Value, Recurring and Nonrecurring [Table] Fair Value, Recurring and Nonrecurring [Table] Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV [Domain] Level 1 Fair Value, Inputs, Level 1 [Member] Level 2 Fair Value, Inputs, Level 2 [Member] Level 3 Fair Value, Inputs, Level 3 [Member] Financial Instrument [Axis] Financial Instrument [Axis] Financial Instruments [Domain] Financial Instruments [Domain] Money market funds Money Market Funds [Member] Time deposits Bank Time Deposits [Member] Derivative Instrument [Axis] Derivative Instrument [Axis] Derivative Contract [Domain] Derivative Contract [Domain] Foreign currency forward contracts Foreign Exchange Forward [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] Assets Assets, Fair Value Disclosure [Abstract] Cash equivalents Cash and Cash Equivalents, Fair Value Disclosure Prepaid expenses and other current assets Derivative Asset, Current Other non-current assets Other Assets, Fair Value Disclosure Total assets Assets, Fair Value Disclosure Estimated aggregate fair value of debt Long-term Debt, Fair Value Summary of Restructuring and Other Related Charges Schedule of Restructuring Reserve by Type of Cost [Table Text Block] Reconciliation of Beginning and Ending Restructuring Liability Balances by Major Type of Costs Restructuring and Related Costs [Table Text Block] Basis of Presentation Business Description and Accounting Policies [Text Block] Cash and short term investments Business Combination, Recognized Identifiable Assets Acquired And Liabilities Assumed, Cash And Short-Term Investments Business Combination, Recognized Identifiable Assets Acquired And Liabilities Assumed, Cash And Short-Term Investments Cash and cash equivalents Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Cash and Equivalents Accounts receivable Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Receivables Inventories Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Inventory Prepaid expense and other current assets Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Prepaid Expense and Other Assets Assets held for sale Business Combination, Recognized Identifiable Assets Acquired And Liabilities Assumed, Assets Held For Sale Business Combination, Recognized Identifiable Assets Acquired And Liabilities Assumed, Assets Held For Sale Property and equipment Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment Other non-current assets Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Other Noncurrent Assets Accounts payable Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Accounts Payable Accrued liabilities Business Combination, Recognized Identifiable Assets Acquired And Liabilities Assumed, Current Liabilities, Accrued Liabilities Business Combination, Recognized Identifiable Assets Acquired And Liabilities Assumed, Current Liabilities, Accrued Liabilities Other, net Business Combination, Recognized Identifiable Assets Acquired And Liabilities Assumed, Other Assets, Net Business Combination, Recognized Identifiable Assets Acquired And Liabilities Assumed, Other Assets, Net Accrued employee compensation Business Combination, Recognized Identifiable Assets Acquired And Liabilities Assumed, Current Liabilities, Accrued Employee Compensation Business Combination, Recognized Identifiable Assets Acquired And Liabilities Assumed, Current Liabilities, Accrued Employee Compensation Deferred income Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Deferred Revenue Current portion of long-term debt Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Long-term Debt Liabilities held for sale Business Combination, Recognized Identifiable Assets Acquired And Liabilities Assumed, Liabilities Held For Sale Business Combination, Recognized Identifiable Assets Acquired And Liabilities Assumed, Liabilities Held For Sale Long-term debt Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Long-term Debt Non-current income taxes payable Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Income Taxes Payable Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Income Taxes Payable Deferred tax liabilities Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Liabilities Other non-current liabilities Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Other Total merger consideration Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net Schedule of Restructuring and Related Costs [Table] Schedule of Restructuring and Related Costs [Table] Restructuring Type [Axis] Restructuring Type [Axis] Type of Restructuring [Domain] Type of Restructuring [Domain] Severance and related costs Employee Severance [Member] Facilities and related costs Facility Closing [Member] Other exit-related costs Other Restructuring [Member] Restructuring Cost and Reserve [Line Items] Restructuring Cost and Reserve [Line Items] Restructuring Reserve [Roll Forward] Restructuring Reserve [Roll Forward] Balance at beginning of period Restructuring Reserve Restructuring charges Restructuring Charges Net cash payments Payments for Restructuring Release of reserves Restructuring Reserve, Accrual Adjustment Effect of adoption of new lease standard Restructuring Reserve, Foreign Currency Translation Gain (Loss) Balance at end of period Less: non-current portion Restructuring Reserve, Noncurrent Current portion Restructuring Reserve, Current Business Combinations Business Combination Disclosure [Text Block] Severance and related costs Severance Costs Facilities and related costs Business Exit Costs Other exit-related costs Other Restructuring Costs Restructuring charges Severance Other restructuring charges Asset Impairment Charges [Abstract] Fixed assets write off Impairment of Long-Lived Assets to be Disposed of Exchange rate adjustment Restructuring Costs, Exchange Rate Adjustment Restructuring Costs, Exchange Rate Adjustment Right-of-use asset amortization and impairment Right-Of-Use Asset Amortization And Impairment Right-Of-Use Asset Amortization And Impairment Release of facility lease liability Restructuring Costs, Release Of Lease Liability Restructuring Costs, Release Of Lease Liability Disaggregation of Revenue Disaggregation of Revenue [Table Text Block] Cash consideration to Aquantia common stockholders Cash consideration - director, employee & consultant grant accelerations and payout for employee stock purchase plan Business Combination, Cash Consideration Transferred , Employee Stock Purchase Plan Business Combination, Cash Consideration Transferred , Employee Stock Purchase Plan Stock consideration for replacement equity awards attributable to pre-combination service Business Combination, Consideration Transferred, Equity Interests Issued and Issuable Total merger consideration Product and Service [Axis] Product and Service [Axis] Product and Service [Domain] Product and Service [Domain] Networking Networking Product Group [Member] Networking Product Group [Member] Storage Storage Product Group [Member] Storage Product Group [Member] Other Other Product Group [Member] Other Product Group [Member] Pro forma net revenue Business Acquisition, Pro Forma Revenue Pro forma net income (loss) Business Acquisition, Pro Forma Net Income (Loss) Summary of Outstanding Debt Schedule of Debt [Table Text Block] Aggregate Future Contractual Maturities of Debt Schedule of Maturities of Long-term Debt [Table Text Block] Change in Contract with Customer, Asset and Liability [Abstract] Change in Contract with Customer, Asset and Liability [Abstract] Beginning balance Contract with Customer, Liability Variable consideration estimates Contract with Customer, Liability, Cumulative Catch-up Adjustment to Revenue, Change in Measure of Progress Credit memos issued Contract With Customer, Liability, Credit Memos Issued Contract With Customer, Liability, Credit Memos Issued Ending balance Schedule of Acquired Indefinite-lived Intangible Assets by Major Class [Table] Schedule of Acquired Indefinite-lived Intangible Assets by Major Class [Table] Indefinite-lived Intangible Assets [Axis] Indefinite-lived Intangible Assets [Axis] Indefinite-lived Intangible Assets, Major Class Name [Domain] Indefinite-lived Intangible Assets, Major Class Name [Domain] Acquired Indefinite-lived Intangible Assets [Line Items] Acquired Indefinite-lived Intangible Assets [Line Items] IPR&D Indefinite-lived Intangible Assets (Excluding Goodwill) Schedule of Acquired Finite-Lived Intangible Asset by Major Class [Table] Schedule of Acquired Finite-Lived Intangible Asset by Major Class [Table] Developed technologies Customer contracts and related relationships Trade names Trade Names [Member] Acquired Finite-Lived Intangible Assets [Line Items] Acquired Finite-Lived Intangible Assets [Line Items] Gross Carrying Amounts Finite-Lived Intangible Assets, Gross Accumulated Amortization Finite-Lived Intangible Assets, Accumulated Amortization Net Carrying Amounts Finite-Lived Intangible Assets, Net Weighted average remaining amortization period (years) Gross Carrying Amounts, Total acquired intangible assets Intangible Assets, Gross (Excluding Goodwill) Accumulated Amortization Net Carrying Amounts, Total acquired intangible assets Loss Contingencies [Table] Loss Contingencies [Table] Litigation Case [Axis] Litigation Case [Axis] Litigation Case [Domain] Litigation Case [Domain] SEC Settlement SEC Settlement [Member] SEC Settlement [Member] Loss Contingencies [Line Items] Loss Contingencies [Line Items] Outstanding purchase orders Unrecorded Unconditional Purchase Obligation Civil monetary penalty value Payments for Legal Settlements Fair Value Measurements Fair Value Disclosures [Text Block] Fair Value, Assets and Liabilities Measured on Recurring Basis Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block] Fiscal year Long-term Debt, Fiscal Year Maturity [Abstract] Remainder of 2020 Long-term Debt, Maturities, Repayments of Principal, Remainder of Fiscal Year 2021 Long-term Debt, Maturities, Repayments of Principal in Year Two 2022 Long-term Debt, Maturities, Repayments of Principal in Year Three 2023 Long-term Debt, Maturities, Repayments of Principal in Year Four 2024 Long-term Debt, Maturities, Repayments of Principal in Year Five Thereafter Long-term Debt, Maturities, Repayments of Principal after Year Five Total Remainder of 2020 Finite-Lived Intangible Assets, Amortization Expense, Remainder of Fiscal Year 2021 Finite-Lived Intangible Assets, Amortization Expense, Year Two 2022 Finite-Lived Intangible Assets, Amortization Expense, Year Three 2023 Finite-Lived Intangible Assets, Amortization Expense, Year Four 2024 Finite-Lived Intangible Assets, Amortization Expense, Year Five Thereafter Finite-Lived Intangible Assets, Amortization Expense, after Year Five Statement of Stockholders' Equity [Abstract] Statement [Table] Statement [Table] Common Stock Common Stock [Member] Additional Paid-in-Capital Additional Paid-in Capital [Member] Accumulated Other Comprehensive Income (Loss) AOCI Attributable to Parent [Member] Retained Earnings Retained Earnings [Member] Statement [Line Items] Statement [Line Items] Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity [Roll Forward] Balance at beginning of period (in shares) Shares, Outstanding Effect of revenue recognition accounting change Cumulative Effect of New Accounting Principle in Period of Adoption Issuance of common shares in connection with equity incentive plans (in shares) Stock Issued During Period, Shares, New Issues Issuance of common shares in connection with equity incentive plans Stock Issued During Period, Value, New Issues Tax withholdings related to net share settlement of restricted stock units Share-based Payment Arrangement, Decrease for Tax Withholding Obligation Share-based compensation APIC, Share-based Payment Arrangement, Increase for Cost Recognition Issuance of warrant for common stock Adjustments to Additional Paid in Capital, Warrant Issued Common stock issued to Cavium common stockholders (in shares) Stock Issued During Period, Shares, Acquisitions Common stock issued to Cavium common stockholders Stock Issued During Period, Value, Acquisitions Stock consideration for Cavium accelerated awards (in shares) Shares Issued, Shares, Share-based Payment Arrangement, before Forfeiture Stock consideration for Cavium accelerated awards Shares Issued, Value, Share-based Payment Arrangement, before Forfeiture Equity related issuance cost Replacement equity awards attributable to pre-acquisition service Adjustments To Additional Paid In Capital, Replacement Equity Awards Attributable To Pre-Acquisition Service Adjustments To Additional Paid In Capital, Replacement Equity Awards Attributable To Pre-Acquisition Service Repurchase of common stock (in shares) Stock Repurchased During Period, Shares Repurchase of common stock Stock Repurchased During Period, Value Cash dividends declared and paid ($0.06 per share) Dividends, Common Stock, Cash Net income (loss) Other comprehensive (loss) income Other Comprehensive Income (Loss), Net of Tax Other Stockholders' Equity, Other Balance at end of period (in shares) Restructuring and Other Related Charges Restructuring, Impairment, and Other Activities Disclosure [Text Block] Subsequent Event [Table] Subsequent Event [Table] Subsequent Event Subsequent Event [Line Items] Subsequent Event [Line Items] Borrowing capacity Statement of Cash Flows [Abstract] Cash flows from operating activities: Net Cash Provided by (Used in) Operating Activities, Continuing Operations [Abstract] 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] Depreciation and amortization Depreciation, Depletion and Amortization, Nonproduction Share-based compensation Share-based Payment Arrangement, Noncash Expense Amortization of inventory fair value adjustment associated with acquisition Amortization Of Inventory Fair Value Adjustment Related With Acquisition Amortization Of Inventory Fair Value Adjustment Related With Acquisition Amortization of deferred debt issuance costs and debt discounts Amortization of Debt Issuance Costs and Discounts Restructuring related impairment charges Non Cash Restructuring And Related Charges (Income) Non-cash restructuring and other related charges (income) Other expense, net Other Noncash Income (Expense) Deferred income taxes Deferred Income Tax Expense (Benefit) Changes in assets and liabilities: Increase (Decrease) in Operating Capital [Abstract] Accounts receivable Increase (Decrease) in Accounts Receivable Inventories Increase (Decrease) in Inventories Prepaid expenses and other assets Increase (Decrease) in Prepaid Expense and Other Assets Accounts payable Increase (Decrease) in Accounts Payable Accrued liabilities and other non-current liabilities Increase (Decrease) in Accrued Liabilities and Other Operating Liabilities Accrued employee compensation Increase (Decrease) in Employee Related 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, Continuing Operations [Abstract] Purchases of available-for-sale securities Payments to Acquire Debt Securities, Available-for-sale Sales of available-for-sale securities Proceeds from Sale of Debt Securities, Available-for-sale Maturities of available-for-sale securities Proceeds from Maturities, Prepayments and Calls of Debt Securities, Available-for-sale Purchases of time deposits Payments to Acquire Time Deposits Payments to Acquire Time Deposits Maturities of time deposits Proceeds from Maturities of Time Deposits Proceeds from Maturities of Time Deposits Purchases of technology licenses Payments to Acquire Intangible Assets Purchases of property and equipment Payments to Acquire Property, Plant, and Equipment Cash payment for acquisition, net of cash and cash equivalents acquired Payments to Acquire Businesses, Net of Cash Acquired Other, net Payments for (Proceeds from) Other Investing Activities 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, Continuing Operations [Abstract] Repurchases of common stock Payments for Repurchase of Common Stock Proceeds from employee stock plans Proceeds, Issuance of Shares, Share-based Payment Arrangement, Excluding Option Exercised Tax withholding paid on behalf of employees for net share settlement Payment, Tax Withholding, Share-based Payment Arrangement Dividend payments to shareholders Payments of Dividends Payments on technology license obligations Payment on Technology License Obligation Payment on Technology License Obligation Proceeds from issuance of debt Proceeds from Issuance of Long-term Debt Principal payments of debt Repayments of Long-term Debt Payment of equity and debt financing costs Payment of Financing and Stock Issuance Costs Other, net Proceeds from (Payments for) Other Financing Activities Net cash provided by financing activities Net Cash Provided by (Used in) Financing Activities Net decrease in cash and cash equivalents Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect Cash and cash equivalents at beginning of period Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents Cash and cash equivalents at end of period Geographical [Axis] Geographical [Axis] Geographical [Domain] Geographical [Domain] China CHINA United States UNITED STATES Philippines PHILIPPINES Thailand THAILAND Malaysia MALAYSIA Other Other Countries [Member] Other Countries [Member] Cover page. Document Type Document Type Document Quarterly Report Document Quarterly Report Document Period End Date Document Period End Date Document Transition Report Document Transition Report Entity File Number Entity File Number Entity Registrant Name Entity Registrant Name Entity Central Index Key Entity Central Index Key Current Fiscal Year End Date Current Fiscal Year End Date Document Fiscal Year Focus Document Fiscal Year Focus Document Fiscal Period Focus Document Fiscal Period Focus Amendment Flag Amendment Flag Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Entity Tax Identification Number Entity Tax Identification Number Entity Address, Address Line One Entity Address, Address Line One Entity Address, City or Town Entity Address, City or Town Entity Address, Postal Zip Code Entity Address, Postal Zip Code Entity Address, Country Entity Address, Country City Area Code City Area Code Local Phone Number Local Phone Number Title of 12(b) Security Title of 12(b) Security Trading Symbol Trading Symbol Security Exchange Name Security Exchange Name Entity Current Reporting Status Entity Current Reporting Status Entity Interactive Data Current Entity Interactive Data Current Entity Filer Category Entity Filer Category Entity Small Business Entity Small Business Entity Emerging Growth Company Entity Emerging Growth Company Entity Shell Company Entity Shell Company Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Cash dividends declared (in usd per share) Common Stock, Dividends, Per Share, Declared Cash dividends paid (in usd per share) Common Stock, Dividends, Per Share, Cash Paid Goodwill and Acquired Intangible Assets, Net Goodwill and Intangible Assets Disclosure [Text Block] Schedule of Earnings Per Share, Basic and Diluted Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Schedule of Anti-dilutive Potential Shares Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block] Operating lease expenses Operating Lease, Expense Cash paid for amounts included in the measurement of operating lease liabilities Operating Lease, Payments Right-of-use assets obtained in exchange for lease obligation Right-of-Use Asset Obtained in Exchange for Operating Lease Liability Remainder of 2020 Lessee, Operating Lease, Liability, Payments, Remainder of Fiscal Year 2021 Lessee, Operating Lease, Liability, Payments, Due Year Two 2022 Lessee, Operating Lease, Liability, Payments, Due Year Three 2023 Lessee, Operating Lease, Liability, Payments, Due Year Four 2024 Lessee, Operating Lease, Liability, Payments, Due Year Five Thereafter Lessee, Operating Lease, Liability, Payments, Due after Year Five Total lease payments Lessee, Operating Lease, Liability, Payments, Due Less: imputed interest Lessee, Operating Lease, Liability, Undiscounted Excess Amount Present value of lease liabilities Leases Lessee, Operating Leases [Text Block] Fiscal Period Fiscal Period, Policy [Policy Text Block] Recent Accounting Pronouncements New Accounting Pronouncements, Policy [Policy Text Block]