$MXL
MAXLINEAR, INC Stock $mxl

$mxl Overview Financials Valuation SEC Filings Company Website

2020 Q4 Form 10-K Financial Statement

#000128846921000013 Filed on February 11, 2021

Income Statement

Concept	2020 Q4	2020	2019 Q4
Revenue	$194.7M	$478.6M	$70.02M
YoY Change	178.09%	50.89%	-20.1%
Cost Of Revenue	$111.6M	$265.8M	$33.40M
YoY Change	234.13%	77.8%	-19.9%
Gross Profit	$83.09M	$212.8M	$36.62M
YoY Change	126.86%	26.9%	-20.21%
Gross Profit Margin	42.67%	44.46%	52.31%
Selling, General & Admin	$30.00M	$130.0M	$15.20M
YoY Change	97.37%	46.49%	-11.63%
% of Gross Profit	36.11%	61.1%	41.5%
Research & Development	$70.50M	$180.0M	$23.50M
YoY Change	200.0%	83.02%	-20.61%
% of Gross Profit	84.85%	84.58%	64.17%
Depreciation & Amortization	$22.70M	$76.51M	$16.50M
YoY Change	37.58%	15.23%	-13.61%
% of Gross Profit	27.32%	35.96%	45.05%
Operating Expenses	$106.8M	$313.9M	$44.30M
YoY Change	141.08%	65.45%	-19.31%
Operating Profit	-$23.71M	-$101.1M	-$7.676M
YoY Change	208.92%	358.53%	-14.71%
Interest Expense	-$4.600M	$12.95M	-$2.400M
YoY Change	91.67%	16.34%	-25.0%
% of Operating Profit
Other Income/Expense, Net	-$600.0K	-$13.71M	-$500.0K
YoY Change	20.0%	31.51%	-350.0%
Pretax Income	-$28.80M	-$114.9M	-$10.80M
YoY Change	166.67%	253.56%	-21.17%
Income Tax	-$4.100M	-$16.30M	-$2.700M
% Of Pretax Income
Net Earnings	-$24.67M	-$98.59M	-$8.104M
YoY Change	204.44%	395.49%	-2705.79%
Net Earnings / Revenue	-12.67%	-20.6%	-11.57%
Basic Earnings Per Share	-$0.33	-$1.35	-$0.11
Diluted Earnings Per Share	-$0.33	-$1.35	-$0.11
COMMON SHARES
Basic Shares Outstanding	74.17M shares	73.13M shares	71.57M shares
Diluted Shares Outstanding		73.13M shares

Balance Sheet

Concept	2020 Q4	2020	2019 Q4
SHORT-TERM ASSETS
Cash & Short-Term Investments	$148.9M	$148.9M	$92.70M
YoY Change	60.63%	60.63%	26.81%
Cash & Equivalents	$148.9M	$148.9M	$92.71M
Short-Term Investments
Other Short-Term Assets	$6.985M	$47.50M	$3.426M
YoY Change	103.88%	569.01%	-68.85%
Inventory	$97.84M	$97.80M	$31.51M
Prepaid Expenses	$7.674M		$3.366M
Receivables	$67.44M	$67.40M	$50.41M
Other Receivables	$0.00	$0.00	$0.00
Total Short-Term Assets	$361.7M	$361.7M	$181.8M
YoY Change	99.0%	98.95%	-1.94%
LONG-TERM ASSETS
Property, Plant & Equipment	$39.47M	$61.40M	$16.61M
YoY Change	137.59%	122.46%	-9.73%
Goodwill	$302.8M		$238.3M
YoY Change	27.06%		0.0%
Intangibles	$207.3M		$188.0M
YoY Change	10.26%		-23.25%
Long-Term Investments
YoY Change
Other Assets	$2.191M	$89.30M	$2.785M
YoY Change	-21.33%	27.39%	-40.29%
Total Long-Term Assets	$660.7M	$660.7M	$524.0M
YoY Change	26.09%	26.09%	-6.13%
TOTAL ASSETS
Total Short-Term Assets	$361.7M	$361.7M	$181.8M
Total Long-Term Assets	$660.7M	$660.7M	$524.0M
Total Assets	$1.022B	$1.022B	$705.8M
YoY Change	44.86%	44.86%	-5.08%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$32.75M	$32.80M	$13.44M
YoY Change	143.65%	144.78%	-13.77%
Accrued Expenses	$105.8M	$186.0M	$31.17M
YoY Change	239.55%	283.51%	10.21%
Deferred Revenue
YoY Change
Short-Term Debt	$0.00	$0.00	$0.00
YoY Change
Long-Term Debt Due	$0.00		$0.00
YoY Change
Total Short-Term Liabilities	$233.7M	$233.7M	$66.56M
YoY Change	251.04%	250.9%	-11.64%
LONG-TERM LIABILITIES
Long-Term Debt	$363.6M	$363.6M	$206.9M
YoY Change	75.73%	75.74%	-19.1%
Other Long-Term Liabilities	$13.21M	$34.10M	$8.065M
YoY Change	63.79%	95.98%	-4.83%
Total Long-Term Liabilities	$376.8M	$397.7M	$215.0M
YoY Change	75.28%	77.31%	-18.64%
TOTAL LIABILITIES
Total Short-Term Liabilities	$233.7M	$233.7M	$66.56M
Total Long-Term Liabilities	$376.8M	$397.7M	$215.0M
Total Liabilities	$631.3M	$631.3M	$290.9M
YoY Change	117.05%	117.02%	-15.36%
SHAREHOLDERS EQUITY
Retained Earnings	-$212.4M		-$113.8M
YoY Change	86.64%		21.54%
Common Stock	$602.1M		$529.6M
YoY Change	13.68%		7.36%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$391.1M	$391.1M	$414.9M
YoY Change
Total Liabilities & Shareholders Equity	$1.022B	$1.022B	$705.8M
YoY Change	44.86%	44.86%	-5.08%

Cashflow Statement

Concept	2020 Q4	2020	2019 Q4
OPERATING ACTIVITIES
Net Income	-$24.67M	-$98.59M	-$8.104M
YoY Change	204.44%	395.49%	-2705.79%
Depreciation, Depletion And Amortization	$22.70M	$76.51M	$16.50M
YoY Change	37.58%	15.23%	-13.61%
Cash From Operating Activities	$74.30M	$73.59M	$28.10M
YoY Change	164.41%	-6.07%	16.12%
INVESTING ACTIVITIES
Capital Expenditures	-$4.800M	$12.49M	-$3.000M
YoY Change	60.0%	81.31%	114.29%
Acquisitions		$160.0M
YoY Change
Other Investing Activities	$0.00	-$160.0M	$0.00
YoY Change
Cash From Investing Activities	-$4.800M	-$175.3M	-$3.000M
YoY Change	60.0%	2413.78%	114.29%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net		-$8.068M
YoY Change		-6.22%
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	-15.10M	$159.6M	1.500M
YoY Change	-1106.67%	-399.06%	-110.07%
NET CHANGE
Cash From Operating Activities	74.30M	$73.59M	28.10M
Cash From Investing Activities	-4.800M	-$175.3M	-3.000M
Cash From Financing Activities	-15.10M	$159.6M	1.500M
Net Change In Cash	54.40M	$56.92M	26.60M
YoY Change	104.51%	200.73%	236.71%
FREE CASH FLOW
Cash From Operating Activities	$74.30M	$73.59M	$28.10M
Capital Expenditures	-$4.800M	$12.49M	-$3.000M
Free Cash Flow	$79.10M	$61.11M	$31.10M
YoY Change	154.34%	-14.49%	21.48%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2020	dei	Entity Central Index Key EntityCentralIndexKey	0001288469
CY2020	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2020
CY2020	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2020	dei	Amendment Flag AmendmentFlag	false
CY2020	mxl	Revenue Performance Obligation Delivery Term RevenuePerformanceObligationDeliveryTerm	P1Y
CY2020	dei	Document Type DocumentType	10-K
CY2020	dei	Document Annual Report DocumentAnnualReport	true
CY2020	dei	Document Period End Date DocumentPeriodEndDate	2020-12-31
CY2020	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2020	dei	Document Transition Report DocumentTransitionReport	false
CY2020	dei	Entity File Number EntityFileNumber	001-34666
CY2020	dei	Entity Registrant Name EntityRegistrantName	MaxLinear, Inc.
CY2020	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	DE
CY2020	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	14-1896129
CY2020	dei	Entity Address Address Line1 EntityAddressAddressLine1	5966 La Place Court, Suite 100,
CY2020	dei	Entity Address City Or Town EntityAddressCityOrTown	Carlsbad,
CY2020	dei	Entity Address State Or Province EntityAddressStateOrProvince	CA
CY2020	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	92008
CY2020	dei	City Area Code CityAreaCode	760
CY2020	dei	Local Phone Number LocalPhoneNumber	692-0711
CY2020	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	Yes
CY2020	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2020	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2020	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
CY2020	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
CY2020	dei	Entity Small Business EntitySmallBusiness	false
CY2020	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
CY2020	dei	Icfr Auditor Attestation Flag IcfrAuditorAttestationFlag	true
CY2020	dei	Entity Shell Company EntityShellCompany	false
CY2020Q2	dei	Entity Public Float EntityPublicFloat	1400000000	USD
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CY2018	us-gaap	Other Comprehensive Income Defined Benefit Plans Net Unamortized Gain Loss Arising During Period Net Of Tax OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax	0	USD
CY2020	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesTax	-8000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesTax	341000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesTax	-187000	USD
CY2020	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax	225000	USD
CY2019	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax	-1319000	USD
CY2018	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax	702000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesTax	0	USD
CY2020	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax	-85000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax	0	USD
CY2018	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax	0	USD
CY2020	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Net Of Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax	140000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Net Of Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax	-1319000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Net Of Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax	702000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	2322000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-1159000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-870000	USD
CY2020	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-96271000	USD
CY2019	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-21057000	USD
CY2018	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-27069000	USD
CY2017Q4	us-gaap	Stockholders Equity StockholdersEquity	387424000	USD
CY2018	mxl	Common Stock Issued Pursuant To Equity Awards Net Value CommonStockIssuedPursuantToEquityAwardsNetValue	1761000	USD
CY2018	us-gaap	Stock Issued During Period Value Employee Stock Purchase Plan StockIssuedDuringPeriodValueEmployeeStockPurchasePlan	4452000	USD
CY2018Q4	us-gaap	Stockholders Equity StockholdersEquity	399936000	USD
CY2019	mxl	Common Stock Issued Pursuant To Equity Awards Net Value CommonStockIssuedPursuantToEquityAwardsNetValue	140000	USD
CY2018	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	31734000	USD
CY2018	mxl	Cumulativeadjustmentforadoptionofaccountingprinciplenet Cumulativeadjustmentforadoptionofaccountingprinciplenet	1634000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-870000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	-26199000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	-26199000	USD
CY2019	us-gaap	Stock Issued During Period Value Employee Stock Purchase Plan StockIssuedDuringPeriodValueEmployeeStockPurchasePlan	4109000	USD
CY2019	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	32060000	USD
CY2019	mxl	Cumulativeadjustmentforadoptionofaccountingprinciplenet Cumulativeadjustmentforadoptionofaccountingprinciplenet	-268000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-1159000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	-19898000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	-19898000	USD
CY2019Q4	us-gaap	Stockholders Equity StockholdersEquity	414920000	USD
CY2020	mxl	Common Stock Issued Pursuant To Equity Awards Net Value CommonStockIssuedPursuantToEquityAwardsNetValue	3997000	USD
CY2020	us-gaap	Stock Issued During Period Shares Acquisitions StockIssuedDuringPeriodSharesAcquisitions	804000	shares
CY2020	us-gaap	Stock Issued During Period Value Acquisitions StockIssuedDuringPeriodValueAcquisitions	17080000	USD
CY2020	us-gaap	Stock Issued During Period Value Employee Stock Purchase Plan StockIssuedDuringPeriodValueEmployeeStockPurchasePlan	3794000	USD
CY2020	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	47597000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	2322000	USD
CY2020	us-gaap	Net Income Loss NetIncomeLoss	-98593000	USD
CY2020	us-gaap	Net Income Loss NetIncomeLoss	-98593000	USD
CY2020Q4	us-gaap	Stockholders Equity StockholdersEquity	391117000	USD
CY2020	us-gaap	Net Income Loss NetIncomeLoss	-98593000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	-19898000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	-26199000	USD
CY2020	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	76513000	USD
CY2019	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	66401000	USD
CY2018	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	79027000	USD
CY2020	us-gaap	Impairment Of Intangible Assets Excluding Goodwill ImpairmentOfIntangibleAssetsExcludingGoodwill	86000	USD
CY2019	us-gaap	Impairment Of Intangible Assets Excluding Goodwill ImpairmentOfIntangibleAssetsExcludingGoodwill	0	USD
CY2018	us-gaap	Impairment Of Intangible Assets Excluding Goodwill ImpairmentOfIntangibleAssetsExcludingGoodwill	2198000	USD
CY2020	mxl	Inventory Fair Value Adjustments InventoryFairValueAdjustments	32945000	USD
CY2019	mxl	Inventory Fair Value Adjustments InventoryFairValueAdjustments	0	USD
CY2018	mxl	Inventory Fair Value Adjustments InventoryFairValueAdjustments	0	USD
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CY2019	mxl	Amortization Debt Issuance Cost Discounton Debtand Leases AmortizationDebtIssuanceCostDiscountonDebtandLeases	1577000	USD
CY2018	mxl	Amortization Debt Issuance Cost Discounton Debtand Leases AmortizationDebtIssuanceCostDiscountonDebtandLeases	1148000	USD
CY2020	us-gaap	Share Based Compensation ShareBasedCompensation	47597000	USD
CY2019	us-gaap	Share Based Compensation ShareBasedCompensation	32060000	USD
CY2018	us-gaap	Share Based Compensation ShareBasedCompensation	31721000	USD
CY2020	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-18488000	USD
CY2019	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-15693000	USD
CY2018	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-12144000	USD
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CY2019	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	-46000	USD
CY2018	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	-430000	USD
CY2020	us-gaap	Impairment Of Leasehold ImpairmentOfLeasehold	319000	USD
CY2019	us-gaap	Impairment Of Leasehold ImpairmentOfLeasehold	1442000	USD
CY2018	us-gaap	Impairment Of Leasehold ImpairmentOfLeasehold	735000	USD
CY2020	mxl	Impairmentofrightofuseasset Impairmentofrightofuseasset	1508000	USD
CY2019	mxl	Impairmentofrightofuseasset Impairmentofrightofuseasset	9240000	USD
CY2018	mxl	Impairmentofrightofuseasset Impairmentofrightofuseasset	0	USD
CY2020	mxl	Gainonextinguishmentofleaseliabilities Gainonextinguishmentofleaseliabilities	0	USD
CY2019	mxl	Gainonextinguishmentofleaseliabilities Gainonextinguishmentofleaseliabilities	10437000	USD
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CY2020	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	-1289000	USD
CY2019	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	-760000	USD
CY2018	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	809000	USD
CY2020	us-gaap	Excess Tax Benefit From Share Based Compensation Operating Activities ExcessTaxBenefitFromShareBasedCompensationOperatingActivities	677000	USD
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CY2020	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	16856000	USD
CY2019	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	-9090000	USD
CY2018	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	-6595000	USD
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CY2019	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	-10195000	USD
CY2018	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	-11696000	USD
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CY2019	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	-3805000	USD
CY2018	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	-1071000	USD
CY2020	us-gaap	Operating Lease Lease Income OperatingLeaseLeaseIncome	441000	USD
CY2019	us-gaap	Operating Lease Lease Income OperatingLeaseLeaseIncome	3044000	USD
CY2018	us-gaap	Operating Lease Lease Income OperatingLeaseLeaseIncome	0	USD
CY2020	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	57094000	USD
CY2019	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	1261000	USD
CY2018	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	5923000	USD
CY2020	us-gaap	Increase Decrease In Employee Related Liabilities IncreaseDecreaseInEmployeeRelatedLiabilities	32606000	USD
CY2019	us-gaap	Increase Decrease In Employee Related Liabilities IncreaseDecreaseInEmployeeRelatedLiabilities	2021000	USD
CY2018	us-gaap	Increase Decrease In Employee Related Liabilities IncreaseDecreaseInEmployeeRelatedLiabilities	8961000	USD
CY2020	mxl	Deferred Revenueand Deferred Profits DeferredRevenueandDeferredProfits	0	USD
CY2019	mxl	Deferred Revenueand Deferred Profits DeferredRevenueandDeferredProfits	0	USD
CY2018	mxl	Deferred Revenueand Deferred Profits DeferredRevenueandDeferredProfits	-138000	USD
CY2020	mxl	Increase Decreasein Accrued Price Protection Liability IncreaseDecreaseinAccruedPriceProtectionLiability	34719000	USD
CY2019	mxl	Increase Decreasein Accrued Price Protection Liability IncreaseDecreaseinAccruedPriceProtectionLiability	-3966000	USD
CY2018	mxl	Increase Decreasein Accrued Price Protection Liability IncreaseDecreaseinAccruedPriceProtectionLiability	-5117000	USD
CY2020	us-gaap	Operating Lease Payments OperatingLeasePayments	6386000	USD
CY2019	us-gaap	Operating Lease Payments OperatingLeasePayments	8142000	USD
CY2018	us-gaap	Operating Lease Payments OperatingLeasePayments	0	USD
CY2020	us-gaap	Increase Decrease In Other Noncurrent Liabilities IncreaseDecreaseInOtherNoncurrentLiabilities	-1934000	USD
CY2019	us-gaap	Increase Decrease In Other Noncurrent Liabilities IncreaseDecreaseInOtherNoncurrentLiabilities	-394000	USD
CY2018	us-gaap	Increase Decrease In Other Noncurrent Liabilities IncreaseDecreaseInOtherNoncurrentLiabilities	-381000	USD
CY2020	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	73593000	USD
CY2019	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	78348000	USD
CY2018	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	102689000	USD
CY2020	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	12487000	USD
CY2019	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	6887000	USD
CY2018	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	7825000	USD
CY2020	us-gaap	Payments To Acquire Intangible Assets PaymentsToAcquireIntangibleAssets	2799000	USD
CY2019	us-gaap	Payments To Acquire Intangible Assets PaymentsToAcquireIntangibleAssets	86000	USD
CY2018	us-gaap	Payments To Acquire Intangible Assets PaymentsToAcquireIntangibleAssets	0	USD
CY2020	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	160000000	USD
CY2019	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	0	USD
CY2018	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	0	USD
CY2020	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-175286000	USD
CY2019	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-6973000	USD
CY2018	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-7825000	USD
CY2020	us-gaap	Proceeds From Issuance Of Secured Debt ProceedsFromIssuanceOfSecuredDebt	175000000	USD
CY2019	us-gaap	Proceeds From Issuance Of Secured Debt ProceedsFromIssuanceOfSecuredDebt	0	USD
CY2018	us-gaap	Proceeds From Issuance Of Secured Debt ProceedsFromIssuanceOfSecuredDebt	0	USD
CY2020	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	2696000	USD
CY2019	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	0	USD
CY2018	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	0	USD
CY2020	us-gaap	Repayments Of Secured Debt RepaymentsOfSecuredDebt	17188000	USD
CY2019	us-gaap	Repayments Of Secured Debt RepaymentsOfSecuredDebt	50000000	USD
CY2018	us-gaap	Repayments Of Secured Debt RepaymentsOfSecuredDebt	93000000	USD
CY2020	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	8068000	USD
CY2019	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	8603000	USD
CY2018	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	6839000	USD
CY2020	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	3535000	USD
CY2019	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	11986000	USD
CY2018	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	7623000	USD
CY2020	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	159649000	USD
CY2019	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-53383000	USD
CY2018	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-93784000	USD
CY2020	us-gaap	Effect Of Exchange Rate On Cash And Cash Equivalents EffectOfExchangeRateOnCashAndCashEquivalents	-1039000	USD
CY2019	us-gaap	Effect Of Exchange Rate On Cash And Cash Equivalents EffectOfExchangeRateOnCashAndCashEquivalents	934000	USD
CY2018	us-gaap	Effect Of Exchange Rate On Cash And Cash Equivalents EffectOfExchangeRateOnCashAndCashEquivalents	-1301000	USD
CY2020	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	56917000	USD
CY2019	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	18926000	USD
CY2018	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-221000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	93117000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	74191000	USD
CY2017Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	74412000	USD
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	150034000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	93117000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	74191000	USD
CY2020	us-gaap	Interest Paid Net InterestPaidNet	11082000	USD
CY2019	us-gaap	Interest Paid Net InterestPaidNet	11259000	USD
CY2018	us-gaap	Interest Paid Net InterestPaidNet	13957000	USD
CY2020	us-gaap	Income Taxes Paid IncomeTaxesPaid	2822000	USD
CY2019	us-gaap	Income Taxes Paid IncomeTaxesPaid	4417000	USD
CY2018	us-gaap	Income Taxes Paid IncomeTaxesPaid	5426000	USD
CY2020	us-gaap	Other Significant Noncash Transaction Value Of Consideration Given1 OtherSignificantNoncashTransactionValueOfConsiderationGiven1	3258000	USD
CY2019	us-gaap	Other Significant Noncash Transaction Value Of Consideration Given1 OtherSignificantNoncashTransactionValueOfConsiderationGiven1	7632000	USD
CY2018	us-gaap	Other Significant Noncash Transaction Value Of Consideration Given1 OtherSignificantNoncashTransactionValueOfConsiderationGiven1	6997000	USD
CY2020	us-gaap	Impairment Of Intangible Assets Excluding Goodwill ImpairmentOfIntangibleAssetsExcludingGoodwill	100000	USD
CY2019	us-gaap	Impairment Of Intangible Assets Excluding Goodwill ImpairmentOfIntangibleAssetsExcludingGoodwill	0	USD
CY2020	us-gaap	Nature Of Operations NatureOfOperations	Description of BusinessMaxLinear, Inc. was incorporated in Delaware in September 2003. MaxLinear, Inc., together with its wholly owned subsidiaries, collectively referred to as MaxLinear, or the Company, is a provider of communications systems-on-chip (SoC) solutions used in broadband, mobile and wireline infrastructure, data center, and industrial and multi-market applications. MaxLinear is a fabless integrated circuit design company whose products integrate all or substantial portions of a high-speed communication system, including radio frequency (RF), high-performance analog, mixed-signal, digital signal processing, security engines, data compression and networking layers, and power management. MaxLinear’s customers include electronics distributors, module makers, original equipment manufacturers, or OEMs, and original design manufacturers, or ODMs, who incorporate the Company’s products in a wide range of electronic devices, including cable Data Over Cable Service Interface Specifications (DOCSIS), fiber and DSL broadband modems and gateways; Wi-Fi and wireline routers for home networking; radio transceivers and modems for 4G/5G base-station and backhaul infrastructure; fiber-optic modules for data center, metro, and long-haul transport networks; as well as power management and interface products used in these and many other markets.
CY2020	us-gaap	Use Of Estimates UseOfEstimates	<div style="margin-top:9pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-style:italic;font-weight:700;line-height:120%">Use of Estimates and Significant Risks and Uncertainties</span></div><div style="margin-top:9pt;text-indent:27pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">The preparation of consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the amounts reported in the consolidated financial statements and accompanying notes of the consolidated financial statements. Actual results could differ from those estimates.</span></div><div style="margin-top:9pt;text-indent:27pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:115%">In the year ended December 31, 2020, the Company’s revenues were impacted by the coronavirus disease, or COVID-19, pandemic. In particular, the Company experienced some negative impact to its revenue and gross profits in the first half of 2020 due to several industry-wide dynamics related to COVID-19 including supply constraints as well as customer requests to temporarily delay shipments. Although the Company has benefited from increased demand for certain of its products from the work-from-home environment in the second half of 2020, heightened volatility and uncertainty in customer demand and the worldwide economy in general has continued, and the Company may experience increased volatility in its sales and revenues in the near future. However, the magnitude of such volatility on the Company’s business and its duration is uncertain and cannot be reasonably estimated at this time. </span></div><div style="text-indent:27pt"><span><br/></span></div><div style="text-indent:27pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:115%">The Company also believes that its $148.9 million of cash and cash equivalents at December 31, 2020 will be sufficient to fund its projected operating requirements for at least the next twelve months. A material adverse impact from COVID-19 could result in a need to raise additional capital or incur additional indebtedness to fund strategic initiatives or operating activities, particularly if the Company pursues additional acquisitions. The Company’s future capital requirements will depend on many factors, including the Company’s efforts to complete the integration of the acquired Wi-Fi and Broadband assets business and NanoSemi (Note 3), changes in revenue, the expansion of engineering, sales and marketing activities, the timing and extent of expansion into new territories, the timing of introductions of new products and enhancements to existing products, the continuing market acceptance of the Company’s products and potential material investments in, or acquisitions of, complementary businesses, services or technologies. Additional funds may not be available on terms favorable to the Company or at all. If the Company is unable to raise additional funds when needed, it may not be able to sustain its operations or execute its strategic plans. </span></div><div style="text-indent:27pt"><span><br/></span></div><div style="text-indent:27pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:115%">The Company is not aware of any specific event or circumstance that would require an update to its estimates or adjustments to the carrying value of its assets and liabilities as of February 11, 2021, the issuance date of this Annual Report on Form 10-K. Actual results could differ from those estimates, particularly if the Company experiences material impacts from </span></div>COVID-19.
CY2020Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	148900000	USD
CY2018	us-gaap	Impairment Of Intangible Assets Excluding Goodwill ImpairmentOfIntangibleAssetsExcludingGoodwill	2200000	USD
CY2020	mxl	Revenue Performance Obligation Payment Term RevenuePerformanceObligationPaymentTerm	P30D
CY2020	mxl	Contractwith Customer Rightof Return Term ContractwithCustomerRightofReturnTerm	P6M
CY2020Q4	us-gaap	Standard Product Warranty Accrual Current StandardProductWarrantyAccrualCurrent	700000	USD
CY2019Q4	us-gaap	Standard Product Warranty Accrual Current StandardProductWarrantyAccrualCurrent	600000	USD
CY2020	us-gaap	Number Of Operating Segments NumberOfOperatingSegments	1
CY2020	us-gaap	Net Income Loss NetIncomeLoss	-98593000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	-19898000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	-26199000	USD
CY2020	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	73133000	shares
CY2019	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	71005000	shares
CY2018	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	68490000	shares
CY2020	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	0	shares
CY2019	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	0	shares
CY2018	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	0	shares
CY2020	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	73133000	shares
CY2019	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	71005000	shares
CY2018	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	68490000	shares
CY2020	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-1.35
CY2019	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.28
CY2018	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.38
CY2020	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-1.35
CY2019	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.28
CY2018	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.38
CY2020	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	3200000	shares
CY2019	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	2500000	shares
CY2018	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	3700000	shares
CY2020Q4	mxl	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Fair Value Mark Up On Inventory BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedFairValueMarkUpOnInventory	32900000	USD
CY2020	mxl	Business Combination Inventory Fair Value Adjustments BusinessCombinationInventoryFairValueAdjustments	32900000	USD
CY2020Q3	us-gaap	Business Acquisition Share Price BusinessAcquisitionSharePrice	21.24
CY2020	us-gaap	Business Acquisitions Pro Forma Revenue BusinessAcquisitionsProFormaRevenue	703165000	USD
CY2019	us-gaap	Business Acquisitions Pro Forma Revenue BusinessAcquisitionsProFormaRevenue	708139000	USD
CY2020	us-gaap	Business Acquisitions Pro Forma Net Income Loss BusinessAcquisitionsProFormaNetIncomeLoss	-101783000	USD
CY2019	us-gaap	Business Acquisitions Pro Forma Net Income Loss BusinessAcquisitionsProFormaNetIncomeLoss	-152070000	USD
CY2020	us-gaap	Revenues Revenues	478596000	USD
CY2019	us-gaap	Revenues Revenues	317180000	USD
CY2020	us-gaap	Business Acquisition Revenue Reported By Acquired Entity For Last Annual Period BusinessAcquisitionRevenueReportedByAcquiredEntityForLastAnnualPeriod	224569000	USD
CY2019	us-gaap	Business Acquisition Revenue Reported By Acquired Entity For Last Annual Period BusinessAcquisitionRevenueReportedByAcquiredEntityForLastAnnualPeriod	390959000	USD
CY2020	us-gaap	Business Acquisitions Pro Forma Revenue BusinessAcquisitionsProFormaRevenue	703165000	USD
CY2019	us-gaap	Business Acquisitions Pro Forma Revenue BusinessAcquisitionsProFormaRevenue	708139000	USD
CY2020	us-gaap	Net Income Loss NetIncomeLoss	-98593000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	-19898000	USD
CY2020	mxl	Business Acquisition Proforma Earnings Of Acquiree BusinessAcquisitionProformaEarningsOfAcquiree	-63882000	USD
CY2019	mxl	Business Acquisition Proforma Earnings Of Acquiree BusinessAcquisitionProformaEarningsOfAcquiree	-97368000	USD
CY2020	mxl	Business Acquisition Proforma Depreciation Of Property Plant And Equipment BusinessAcquisitionProformaDepreciationOfPropertyPlantAndEquipment	5810000	USD
CY2019	mxl	Business Acquisition Proforma Depreciation Of Property Plant And Equipment BusinessAcquisitionProformaDepreciationOfPropertyPlantAndEquipment	2020000	USD
CY2020	mxl	Business Acquisition Proforma Amortization Of Intangible Assets BusinessAcquisitionProformaAmortizationOfIntangibleAssets	11428000	USD
CY2019	mxl	Business Acquisition Proforma Amortization Of Intangible Assets BusinessAcquisitionProformaAmortizationOfIntangibleAssets	17583000	USD
CY2020	mxl	Business Combination Inventory Fair Value Adjustments BusinessCombinationInventoryFairValueAdjustments	32945000	USD
CY2019	mxl	Business Combination Inventory Fair Value Adjustments BusinessCombinationInventoryFairValueAdjustments	-32945000	USD
CY2020	mxl	Business Combination Transaction Costs BusinessCombinationTransactionCosts	14243000	USD
CY2019	mxl	Business Combination Transaction Costs BusinessCombinationTransactionCosts	-14243000	USD
CY2020	mxl	Business Acquisition Pro Forma Interest Expense BusinessAcquisitionProFormaInterestExpense	-4963000	USD
CY2019	mxl	Business Acquisition Pro Forma Interest Expense BusinessAcquisitionProFormaInterestExpense	2816000	USD
CY2020	mxl	Business Acquisition Pro Forma Other Expenses BusinessAcquisitionProFormaOtherExpenses	1867000	USD
CY2019	mxl	Business Acquisition Pro Forma Other Expenses BusinessAcquisitionProFormaOtherExpenses	-7604000	USD
CY2020	mxl	Business Acquisition Proforma Acquisitions Tax Provision BusinessAcquisitionProformaAcquisitionsTaxProvision	-638000	USD
CY2019	mxl	Business Acquisition Proforma Acquisitions Tax Provision BusinessAcquisitionProformaAcquisitionsTaxProvision	-2431000	USD
CY2020	us-gaap	Business Acquisition Pro Forma Earnings Per Share Basic BusinessAcquisitionProFormaEarningsPerShareBasic	-1.39
CY2019	us-gaap	Business Acquisition Pro Forma Earnings Per Share Basic BusinessAcquisitionProFormaEarningsPerShareBasic	-2.12
CY2020	us-gaap	Business Acquisition Pro Forma Earnings Per Share Diluted BusinessAcquisitionProFormaEarningsPerShareDiluted	-1.39
CY2019	us-gaap	Business Acquisition Pro Forma Earnings Per Share Diluted BusinessAcquisitionProFormaEarningsPerShareDiluted	-2.12
CY2020	us-gaap	Weighted Average Basic Shares Outstanding Pro Forma WeightedAverageBasicSharesOutstandingProForma	73133000	shares
CY2019	us-gaap	Weighted Average Basic Shares Outstanding Pro Forma WeightedAverageBasicSharesOutstandingProForma	71809000	shares
CY2020	us-gaap	Pro Forma Weighted Average Shares Outstanding Diluted ProFormaWeightedAverageSharesOutstandingDiluted	73133000	shares
CY2019	us-gaap	Pro Forma Weighted Average Shares Outstanding Diluted ProFormaWeightedAverageSharesOutstandingDiluted	71809000	shares
CY2020	mxl	Business Combination Pro Forma Nonrecurring Adjustment BusinessCombinationProFormaNonrecurringAdjustment	33700000	USD
CY2020	us-gaap	Business Combination Pro Forma Information Revenue Of Acquiree Since Acquisition Date Actual BusinessCombinationProFormaInformationRevenueOfAcquireeSinceAcquisitionDateActual	209700000	USD
CY2020	mxl	Business Combination Pro Forma Information Gross Profit Of Acquiree Since Acquisition Date Actual BusinessCombinationProFormaInformationGrossProfitOfAcquireeSinceAcquisitionDateActual	110700000	USD
CY2020	mxl	Business Combination Pro Forma Nonrecurring Adjustment Actual BusinessCombinationProFormaNonrecurringAdjustmentActual	36300000	USD
CY2020	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	14200000	USD
CY2020	us-gaap	Restructuring Charges RestructuringCharges	3833000	USD
CY2019	us-gaap	Restructuring Charges RestructuringCharges	2636000	USD
CY2018	us-gaap	Restructuring Charges RestructuringCharges	3838000	USD
CY2020	mxl	Impairmentofrightofuseasset Impairmentofrightofuseasset	1500000	USD
CY2018Q4	us-gaap	Restructuring Reserve RestructuringReserve	1946000	USD
CY2019	us-gaap	Restructuring Reserve Accrual Adjustment1 RestructuringReserveAccrualAdjustment1	-299000	USD
CY2019	us-gaap	Restructuring Charges RestructuringCharges	2636000	USD
CY2019	us-gaap	Payments For Restructuring PaymentsForRestructuring	3442000	USD
CY2019	us-gaap	Restructuring Reserve Settled Without Cash2 RestructuringReserveSettledWithoutCash2	4000	USD
CY2019Q4	us-gaap	Restructuring Reserve RestructuringReserve	837000	USD
CY2020	us-gaap	Restructuring Charges RestructuringCharges	3833000	USD
CY2020	us-gaap	Payments For Restructuring PaymentsForRestructuring	2523000	USD
CY2020	mxl	Reimbursement Due From Intel ReimbursementDueFromIntel	4415000	USD
CY2020	us-gaap	Restructuring Reserve Settled Without Cash2 RestructuringReserveSettledWithoutCash2	2565000	USD
CY2020Q4	us-gaap	Restructuring Reserve RestructuringReserve	3997000	USD
CY2019Q4	us-gaap	Goodwill Goodwill	238330000	USD
CY2018Q4	us-gaap	Goodwill Goodwill	238330000	USD
CY2020	us-gaap	Goodwill Acquired During Period GoodwillAcquiredDuringPeriod	64498000	USD
CY2019	us-gaap	Goodwill Acquired During Period GoodwillAcquiredDuringPeriod	0	USD
CY2020Q4	us-gaap	Goodwill Goodwill	302828000	USD
CY2019Q4	us-gaap	Goodwill Goodwill	238330000	USD
CY2020	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0	USD
CY2020	us-gaap	Finite Lived Intangible Asset Useful Life FiniteLivedIntangibleAssetUsefulLife	P6Y2M12D
CY2020Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	454930000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	254864000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	200066000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	381517000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	193546000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	187971000	USD
CY2020	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	61318000	USD
CY2019	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	57015000	USD
CY2018	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	67947000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	187971000	USD
CY2018Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	240500000	USD
CY2020	us-gaap	Finitelived Intangible Assets Acquired1 FinitelivedIntangibleAssetsAcquired1	70700000	USD
CY2019	us-gaap	Finitelived Intangible Assets Acquired1 FinitelivedIntangibleAssetsAcquired1	0	USD
CY2020	mxl	Finitelived Intangible Assets Other Additions FinitelivedIntangibleAssetsOtherAdditions	2799000	USD
CY2019	mxl	Finitelived Intangible Assets Other Additions FinitelivedIntangibleAssetsOtherAdditions	86000	USD
CY2020	mxl	Intangible Assets Transferfrom Ipr Dto Developed Tech IntangibleAssetsTransferfromIPRDtoDevelopedTech	0	USD
CY2019	mxl	Intangible Assets Transferfrom Ipr Dto Developed Tech IntangibleAssetsTransferfromIPRDtoDevelopedTech	4400000	USD
CY2020	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	61318000	USD
CY2019	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	57015000	USD
CY2020	us-gaap	Impairment Of Intangible Assets Finitelived ImpairmentOfIntangibleAssetsFinitelived	86000	USD
CY2019	us-gaap	Impairment Of Intangible Assets Finitelived ImpairmentOfIntangibleAssetsFinitelived	0	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	200066000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	187971000	USD
CY2019	us-gaap	Impairment Of Intangible Assets Finitelived ImpairmentOfIntangibleAssetsFinitelived	0	USD
CY2020	us-gaap	Impairment Of Intangible Assets Finitelived ImpairmentOfIntangibleAssetsFinitelived	100000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	48908000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Three FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	36802000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	20804000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Next Twelve Months FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths	66772000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Five FiniteLivedIntangibleAssetsAmortizationExpenseYearFive	10706000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense After Year Five FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive	16074000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	200066000	USD
CY2019Q4	us-gaap	Other Indefinite Lived Intangible Assets OtherIndefiniteLivedIntangibleAssets	0	USD
CY2018Q4	us-gaap	Other Indefinite Lived Intangible Assets OtherIndefiniteLivedIntangibleAssets	4400000	USD
CY2020	us-gaap	Indefinitelived Intangible Assets Acquired IndefinitelivedIntangibleAssetsAcquired	7200000	USD
CY2019	us-gaap	Indefinitelived Intangible Assets Acquired IndefinitelivedIntangibleAssetsAcquired	0	USD
CY2020	mxl	Intangible Assets Transferfrom Ipr Dto Developed Tech IntangibleAssetsTransferfromIPRDtoDevelopedTech	0	USD
CY2019	mxl	Intangible Assets Transferfrom Ipr Dto Developed Tech IntangibleAssetsTransferfromIPRDtoDevelopedTech	4400000	USD
CY2020Q4	us-gaap	Other Indefinite Lived Intangible Assets OtherIndefiniteLivedIntangibleAssets	7200000	USD
CY2019Q4	us-gaap	Other Indefinite Lived Intangible Assets OtherIndefiniteLivedIntangibleAssets	0	USD
CY2019	us-gaap	Impairment Of Intangible Assets Indefinitelived Excluding Goodwill ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill	0	USD
CY2020	us-gaap	Impairment Of Intangible Assets Indefinitelived Excluding Goodwill ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill	0	USD
CY2018	us-gaap	Impairment Of Intangible Assets Indefinitelived Excluding Goodwill ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill	0	USD
CY2020Q4	us-gaap	Business Combination Contingent Consideration Liability BusinessCombinationContingentConsiderationLiability	0	USD
CY2019Q4	us-gaap	Business Combination Contingent Consideration Liability BusinessCombinationContingentConsiderationLiability	0	USD
CY2020Q4	us-gaap	Business Combination Contingent Consideration Liability BusinessCombinationContingentConsiderationLiability	0	USD
CY2019Q4	us-gaap	Derivative Liabilities DerivativeLiabilities	37000	USD
CY2018Q4	us-gaap	Derivative Liabilities DerivativeLiabilities	1623000	USD
CY2020	us-gaap	Fair Value Net Derivative Asset Liability Measured On Recurring Basis Unobservable Inputs Reconciliation Gain Loss Included In Other Comprehensive Income Loss FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationGainLossIncludedInOtherComprehensiveIncomeLoss	122000	USD
CY2019	us-gaap	Fair Value Net Derivative Asset Liability Measured On Recurring Basis Unobservable Inputs Reconciliation Gain Loss Included In Other Comprehensive Income Loss FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationGainLossIncludedInOtherComprehensiveIncomeLoss	-1660000	USD
CY2020	us-gaap	Derivative Gain Loss On Derivative Net DerivativeGainLossOnDerivativeNet	-85000	USD
CY2019	us-gaap	Derivative Gain Loss On Derivative Net DerivativeGainLossOnDerivativeNet	0	USD
CY2020Q4	us-gaap	Derivative Liabilities DerivativeLiabilities	0	USD
CY2019Q4	us-gaap	Derivative Liabilities DerivativeLiabilities	37000	USD
CY2019	mxl	Fair Value Liabilities Transfersbetween Levels FairValueLiabilitiesTransfersbetweenLevels	0	USD
CY2020	mxl	Fair Value Liabilities Transfersbetween Levels FairValueLiabilitiesTransfersbetweenLevels	0	USD
CY2019Q4	us-gaap	Restricted Cash And Cash Equivalents At Carrying Value RestrictedCashAndCashEquivalentsAtCarryingValue	349000	USD
CY2020Q4	us-gaap	Restricted Cash And Cash Equivalents Noncurrent RestrictedCashAndCashEquivalentsNoncurrent	1018000	USD
CY2019Q4	us-gaap	Restricted Cash And Cash Equivalents Noncurrent RestrictedCashAndCashEquivalentsNoncurrent	60000	USD
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	150034000	USD
CY2020Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	148901000	USD
CY2019Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	92708000	USD
CY2020Q4	us-gaap	Restricted Cash And Cash Equivalents At Carrying Value RestrictedCashAndCashEquivalentsAtCarryingValue	115000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	93117000	USD
CY2020Q4	us-gaap	Money Market Funds At Carrying Value MoneyMarketFundsAtCarryingValue	20400000	USD
CY2019Q4	us-gaap	Money Market Funds At Carrying Value MoneyMarketFundsAtCarryingValue	20400000	USD
CY2020Q4	us-gaap	Restricted Cash And Cash Equivalents RestrictedCashAndCashEquivalents	1100000	USD
CY2019Q4	us-gaap	Restricted Cash And Cash Equivalents RestrictedCashAndCashEquivalents	400000	USD
CY2020Q4	us-gaap	Inventory Work In Process InventoryWorkInProcess	35852000	USD
CY2019Q4	us-gaap	Inventory Work In Process InventoryWorkInProcess	14525000	USD
CY2019Q4	mxl	Accrued Price Protection Liability AccruedPriceProtectionLiability	12557000	USD
CY2018Q4	mxl	Accrued Price Protection Liability AccruedPriceProtectionLiability	16454000	USD
CY2020Q4	us-gaap	Inventory Finished Goods InventoryFinishedGoods	61987000	USD
CY2019Q4	us-gaap	Inventory Finished Goods InventoryFinishedGoods	16985000	USD
CY2020Q4	us-gaap	Inventory Net InventoryNet	97839000	USD
CY2019Q4	us-gaap	Inventory Net InventoryNet	31510000	USD
CY2020Q4	us-gaap	Prepaid Expense Current And Noncurrent PrepaidExpenseCurrentAndNoncurrent	7674000	USD
CY2019Q4	us-gaap	Prepaid Expense Current And Noncurrent PrepaidExpenseCurrentAndNoncurrent	3366000	USD
CY2020Q4	us-gaap	Other Receivables OtherReceivables	32762000	USD
CY2019Q4	us-gaap	Other Receivables OtherReceivables	0	USD
CY2020Q4	us-gaap	Other Assets Current OtherAssetsCurrent	6985000	USD
CY2019Q4	us-gaap	Other Assets Current OtherAssetsCurrent	3426000	USD
CY2020Q4	us-gaap	Prepaid Expense And Other Assets Current PrepaidExpenseAndOtherAssetsCurrent	47421000	USD
CY2019Q4	us-gaap	Prepaid Expense And Other Assets Current PrepaidExpenseAndOtherAssetsCurrent	6792000	USD
CY2020Q4	us-gaap	Other Receivables OtherReceivables	32800000	USD
CY2020Q4	mxl	Other Receivables Due From Intel OtherReceivablesDueFromIntel	28400000	USD
CY2020	mxl	Reimbursement Due From Intel ReimbursementDueFromIntel	4400000	USD
CY2020Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	109300000	USD
CY2019Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	75956000	USD
CY2020Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	69830000	USD
CY2019Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	59343000	USD
CY2020Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	39470000	USD
CY2019Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	16613000	USD
CY2020	us-gaap	Depreciation Depreciation	11300000	USD
CY2019	us-gaap	Depreciation Depreciation	7300000	USD
CY2018	us-gaap	Depreciation Depreciation	11100000	USD
CY2020	mxl	Price Protection Rebate Charges PriceProtectionRebateCharges	48942000	USD
CY2019	mxl	Price Protection Rebate Charges PriceProtectionRebateCharges	24449000	USD
CY2020	mxl	Reversal Of Unclaimed Rebates ReversalOfUnclaimedRebates	159000	USD
CY2019	mxl	Reversal Of Unclaimed Rebates ReversalOfUnclaimedRebates	42000	USD
CY2020	mxl	Price Protectionpayments PriceProtectionpayments	13574000	USD
CY2019	mxl	Price Protectionpayments PriceProtectionpayments	28304000	USD
CY2020Q4	mxl	Accrued Price Protection Liability AccruedPriceProtectionLiability	47766000	USD
CY2019Q4	mxl	Accrued Price Protection Liability AccruedPriceProtectionLiability	12557000	USD
CY2020Q4	mxl	Deferred Purchase Price Payments DeferredPurchasePricePayments	34484000	USD
CY2019Q4	mxl	Deferred Purchase Price Payments DeferredPurchasePricePayments	0	USD
CY2020Q4	mxl	Payables Under Transition Services Agreement PayablesUnderTransitionServicesAgreement	17420000	USD
CY2019Q4	mxl	Payables Under Transition Services Agreement PayablesUnderTransitionServicesAgreement	0	USD
CY2020Q4	mxl	Accrued Technology License Payments Current AccruedTechnologyLicensePaymentsCurrent	5821000	USD
CY2019Q4	mxl	Accrued Technology License Payments Current AccruedTechnologyLicensePaymentsCurrent	4500000	USD
CY2020Q4	us-gaap	Accrued Professional Fees Current AccruedProfessionalFeesCurrent	2620000	USD
CY2019Q4	us-gaap	Accrued Professional Fees Current AccruedProfessionalFeesCurrent	861000	USD
CY2020Q4	mxl	Accruedengineeringandproductioncosts Accruedengineeringandproductioncosts	3448000	USD
CY2019Q4	mxl	Accruedengineeringandproductioncosts Accruedengineeringandproductioncosts	4491000	USD
CY2020Q4	us-gaap	Restructuring Reserve Current RestructuringReserveCurrent	3628000	USD
CY2019Q4	us-gaap	Restructuring Reserve Current RestructuringReserveCurrent	294000	USD
CY2020Q4	us-gaap	Accrued Royalties Current AccruedRoyaltiesCurrent	1965000	USD
CY2019Q4	us-gaap	Accrued Royalties Current AccruedRoyaltiesCurrent	923000	USD
CY2020Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	8144000	USD
CY2019Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	4810000	USD
CY2020Q4	mxl	Accruedcustomercredits Accruedcustomercredits	1135000	USD
CY2019Q4	mxl	Accruedcustomercredits Accruedcustomercredits	832000	USD
CY2020Q4	us-gaap	Taxes Payable Current And Noncurrent TaxesPayableCurrentAndNoncurrent	1193000	USD
CY2019Q4	us-gaap	Taxes Payable Current And Noncurrent TaxesPayableCurrentAndNoncurrent	65000	USD
CY2020Q4	us-gaap	Contract With Customer Liability ContractWithCustomerLiability	29000	USD
CY2019Q4	us-gaap	Contract With Customer Liability ContractWithCustomerLiability	107000	USD
CY2020Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	13642000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax	-85000	USD
CY2020	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent	0	USD
CY2019Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	4496000	USD
CY2020Q4	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	105842000	USD
CY2019Q4	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	31171000	USD
CY2020Q4	mxl	Payables Under Transition Services Agreement PayablesUnderTransitionServicesAgreement	17400000	USD
CY2020Q4	mxl	Other Payables Due To Intel OtherPayablesDueToIntel	9100000	USD
CY2020Q4	mxl	Other Payables Other Accrued Expenses Due To Intel OtherPayablesOtherAccruedExpensesDueToIntel	8300000	USD
CY2018Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	272000	USD
CY2019	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Gain Loss Arising During Period Net Of Tax OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax	160000	USD
CY2019	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax	-1319000	USD
CY2019	us-gaap	Other Comprehensive Income Defined Benefit Plans Net Unamortized Gain Loss Arising During Period Net Of Tax OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax	0	USD
CY2019	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-1159000	USD
CY2019Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-887000	USD
CY2020	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Gain Loss Arising During Period Net Of Tax OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax	1010000	USD
CY2020	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax	225000	USD
CY2020	us-gaap	Other Comprehensive Income Defined Benefit Plans Net Unamortized Gain Loss Arising During Period Net Of Tax OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax	1172000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	2407000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Reclassification Adjustment From Aoci Realized Upon Sale Or Liquidation Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationReclassificationAdjustmentFromAOCIRealizedUponSaleOrLiquidationNetOfTax	0	USD
CY2020	us-gaap	Reclassification From Accumulated Other Comprehensive Income Current Period Net Of Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax	-85000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	1010000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Net Of Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax	140000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	1172000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	2322000	USD
CY2020Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	1435000	USD
CY2020Q4	us-gaap	Debt Instrument Interest Rate Effective Percentage DebtInstrumentInterestRateEffectivePercentage	0.044
CY2019Q4	us-gaap	Debt Instrument Interest Rate Effective Percentage DebtInstrumentInterestRateEffectivePercentage	0.049
CY2020	us-gaap	Amortization Of Debt Discount Premium AmortizationOfDebtDiscountPremium	400000	USD
CY2020	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	1100000	USD
CY2019	us-gaap	Amortization Of Debt Discount Premium AmortizationOfDebtDiscountPremium	300000	USD
CY2019	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	900000	USD
CY2018	us-gaap	Amortization Of Debt Discount Premium AmortizationOfDebtDiscountPremium	300000	USD
CY2018	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	800000	USD
CY2020Q4	us-gaap	Long Term Debt Fair Value LongTermDebtFairValue	376100000	USD
CY2019Q4	us-gaap	Long Term Debt Fair Value LongTermDebtFairValue	214600000	USD
CY2020Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Next Twelve Months LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths	0	USD
CY2020Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Two LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo	15312000	USD
CY2020Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Three LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree	142500000	USD
CY2020Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Four LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour	212000000	USD
CY2020Q4	us-gaap	Debt Current DebtCurrent	0	USD
CY2020Q4	us-gaap	Long Term Debt LongTermDebt	369812000	USD
CY2017Q2	mxl	Lineof Credit Facility Incremental Borrowing Capacity LineofCreditFacilityIncrementalBorrowingCapacity	160000000.0	USD
CY2020Q4	mxl	Debt Instrument Quarterly Amortization Rate DebtInstrumentQuarterlyAmortizationRate	0.0025
CY2020	us-gaap	Debt Instrument Term DebtInstrumentTerm	P7Y
CY2020	us-gaap	Debt Instrument Call Feature DebtInstrumentCallFeature	1.0% soft call premium
CY2017Q2	us-gaap	Long Term Debt Fair Value LongTermDebtFairValue	398500000	USD
CY2017Q2	us-gaap	Debt Instrument Interest Rate Effective Percentage DebtInstrumentInterestRateEffectivePercentage	0.046
CY2017Q2	us-gaap	Debt Instrument Unamortized Discount DebtInstrumentUnamortizedDiscount	2100000	USD
CY2017Q2	us-gaap	Deferred Finance Costs Gross DeferredFinanceCostsGross	6000000.0	USD
CY2020	us-gaap	Debt Instrument Covenant Description DebtInstrumentCovenantDescription	The Incremental Term Loan is subject to a financial covenant of an initial maximum total net leverage ratio of 3.5 to 1 which decreases to 3.0 to 1 beginning with the sixth full fiscal quarter ending after July 31, 2020. During any period during which the Company (i) fails to maintain a public corporate rating from S&P that is equal to or higher than BB- and a public corporate rating from Moody's that is equal to or higher than Ba3 or (ii) fails to maintain a total leverage ratio of 3.0 to 1 or less, the applicable margin will increase to 4.75% in the case of LIBOR Rate loans and 3.75% in the case of Base Rate loans.
CY2017Q4	us-gaap	Derivative Fixed Interest Rate DerivativeFixedInterestRate	0.0174685
CY2020Q4	us-gaap	Derivative Fixed Interest Rate DerivativeFixedInterestRate	0.0425
CY2019Q4	us-gaap	Derivative Assets DerivativeAssets	40000.00	USD
CY2020	us-gaap	Fair Value Net Derivative Asset Liability Measured On Recurring Basis Unobservable Inputs Reconciliation Gain Loss Included In Other Comprehensive Income Loss FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationGainLossIncludedInOtherComprehensiveIncomeLoss	100000	USD
CY2019	us-gaap	Fair Value Net Derivative Asset Liability Measured On Recurring Basis Unobservable Inputs Reconciliation Gain Loss Included In Other Comprehensive Income Loss FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationGainLossIncludedInOtherComprehensiveIncomeLoss	-1700000	USD
CY2018	us-gaap	Fair Value Net Derivative Asset Liability Measured On Recurring Basis Unobservable Inputs Reconciliation Gain Loss Included In Other Comprehensive Income Loss FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationGainLossIncludedInOtherComprehensiveIncomeLoss	900000	USD
	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax	100000	USD
CY2020Q1	mxl	Shares Issuedupon Settlementof Executive Bonus Plan SharesIssueduponSettlementofExecutiveBonusPlan	200000	shares
CY2019Q1	mxl	Shares Issuedupon Settlementof Executive Bonus Plan SharesIssueduponSettlementofExecutiveBonusPlan	300000	shares
CY2020Q4	us-gaap	Accrued Bonuses Current And Noncurrent AccruedBonusesCurrentAndNoncurrent	32800000	USD
CY2020	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	47597000	USD
CY2019	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	32040000	USD
CY2018	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	31721000	USD
CY2020Q4	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Stock Options EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedStockOptions	1000000.0	USD
CY2020	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Vested And Expected To Vest Outstanding Weighted Average Remaining Contractual Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageRemainingContractualTerm1	P1Y6M
CY2020	mxl	Vesting Percentage Relative To Net Sales VestingPercentageRelativeToNetSales	0.60
CY2020	mxl	Vesting Percentage Relative To Eps VestingPercentageRelativeToEPS	0.40
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	4900000	USD
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	22200000	USD
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	8100000	USD
CY2020	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	4400000	USD
CY2019	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	4500000	USD
CY2018	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	700000	USD
CY2020	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	5200000	USD
CY2019	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	20700000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	16405000	USD
CY2020	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	-2074000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	29409000	USD
CY2018	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	7800000	USD
CY2020	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	-112778000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	-61893000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	-49257000	USD
CY2020	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	-114852000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	-32484000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	-32852000	USD
CY2020	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	-176000	USD
CY2019	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	1604000	USD
CY2018	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	3292000	USD
CY2020	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	12000	USD
CY2019	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	16000	USD
CY2018	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	37000	USD
CY2020	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	2687000	USD
CY2019	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	1560000	USD
CY2018	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	1640000	USD
CY2020	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	2523000	USD
CY2019	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	3180000	USD
CY2018	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	4969000	USD
CY2020	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-18595000	USD
CY2019	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-13793000	USD
CY2018	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	788000	USD
CY2020	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-705000	USD
CY2019	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-1829000	USD
CY2018	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-2799000	USD
CY2020	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	8025000	USD
CY2019	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	1095000	USD
CY2018	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	-3884000	USD
CY2020	us-gaap	Valuation Allowance Deferred Tax Asset Change In Amount ValuationAllowanceDeferredTaxAssetChangeInAmount	7507000	USD
CY2019	us-gaap	Valuation Allowance Deferred Tax Asset Change In Amount ValuationAllowanceDeferredTaxAssetChangeInAmount	1239000	USD
CY2018	us-gaap	Valuation Allowance Deferred Tax Asset Change In Amount ValuationAllowanceDeferredTaxAssetChangeInAmount	5727000	USD
CY2020	mxl	Deferred Income Taxes Expense Benefit DeferredIncomeTaxesExpenseBenefit	-18782000	USD
CY2019	mxl	Deferred Income Taxes Expense Benefit DeferredIncomeTaxesExpenseBenefit	-15766000	USD
CY2018	mxl	Deferred Income Taxes Expense Benefit DeferredIncomeTaxesExpenseBenefit	-11622000	USD
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-16259000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-12586000	USD
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-6653000	USD
CY2020	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	-24119000	USD
CY2019	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	-6821000	USD
CY2018	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	-6814000	USD
CY2020	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	9000	USD
CY2019	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	11000	USD
CY2018	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	20000	USD
CY2020	us-gaap	Income Tax Reconciliation Tax Credits Research IncomeTaxReconciliationTaxCreditsResearch	6521000	USD
CY2019	us-gaap	Income Tax Reconciliation Tax Credits Research IncomeTaxReconciliationTaxCreditsResearch	7815000	USD
CY2018	us-gaap	Income Tax Reconciliation Tax Credits Research IncomeTaxReconciliationTaxCreditsResearch	8849000	USD
CY2020	us-gaap	Income Tax Reconciliation Foreign Income Tax Rate Differential IncomeTaxReconciliationForeignIncomeTaxRateDifferential	2354000	USD
CY2019	us-gaap	Income Tax Reconciliation Foreign Income Tax Rate Differential IncomeTaxReconciliationForeignIncomeTaxRateDifferential	-4489000	USD
CY2018	us-gaap	Income Tax Reconciliation Foreign Income Tax Rate Differential IncomeTaxReconciliationForeignIncomeTaxRateDifferential	8640000	USD
CY2020	us-gaap	Income Tax Reconciliation Nondeductible Expense Share Based Compensation Cost IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost	5425000	USD
CY2019	us-gaap	Income Tax Reconciliation Nondeductible Expense Share Based Compensation Cost IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost	-2750000	USD
CY2018	us-gaap	Income Tax Reconciliation Nondeductible Expense Share Based Compensation Cost IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost	74000	USD
CY2020	us-gaap	Income Tax Reconciliation Nondeductible Expense IncomeTaxReconciliationNondeductibleExpense	131000	USD
CY2020	mxl	Income Tax Reconciliation Foreign Dividends IncomeTaxReconciliationForeignDividends	1446000	USD
CY2019	mxl	Income Tax Reconciliation Foreign Dividends IncomeTaxReconciliationForeignDividends	3936000	USD
CY2018	mxl	Income Tax Reconciliation Foreign Dividends IncomeTaxReconciliationForeignDividends	1103000	USD
CY2020	us-gaap	Tax Adjustments Settlements And Unusual Provisions TaxAdjustmentsSettlementsAndUnusualProvisions	-286000	USD
CY2019	us-gaap	Tax Adjustments Settlements And Unusual Provisions TaxAdjustmentsSettlementsAndUnusualProvisions	1887000	USD
CY2018	us-gaap	Tax Adjustments Settlements And Unusual Provisions TaxAdjustmentsSettlementsAndUnusualProvisions	-27000	USD
CY2020	us-gaap	Income Tax Reconciliation Tax Contingencies IncomeTaxReconciliationTaxContingencies	222000	USD
CY2019	us-gaap	Income Tax Reconciliation Tax Contingencies IncomeTaxReconciliationTaxContingencies	1244000	USD
CY2018	us-gaap	Income Tax Reconciliation Tax Contingencies IncomeTaxReconciliationTaxContingencies	1463000	USD
CY2019	us-gaap	Income Tax Reconciliation Nondeductible Expense IncomeTaxReconciliationNondeductibleExpense	716000	USD
CY2018	us-gaap	Income Tax Reconciliation Nondeductible Expense IncomeTaxReconciliationNondeductibleExpense	1319000	USD
CY2020	us-gaap	Income Tax Reconciliation Repatriation Of Foreign Earnings IncomeTaxReconciliationRepatriationOfForeignEarnings	233000	USD
CY2019	us-gaap	Income Tax Reconciliation Repatriation Of Foreign Earnings IncomeTaxReconciliationRepatriationOfForeignEarnings	103000	USD
CY2018	us-gaap	Income Tax Reconciliation Repatriation Of Foreign Earnings IncomeTaxReconciliationRepatriationOfForeignEarnings	1960000	USD
CY2020	us-gaap	Income Tax Reconciliation Change In Enacted Tax Rate IncomeTaxReconciliationChangeInEnactedTaxRate	0	USD
CY2019	us-gaap	Income Tax Reconciliation Change In Enacted Tax Rate IncomeTaxReconciliationChangeInEnactedTaxRate	0	USD
CY2020	mxl	Effective Income Tax Reconciliation Other Transaction Costs EffectiveIncomeTaxReconciliationOtherTransactionCosts	883000	USD
CY2018	us-gaap	Income Tax Reconciliation Change In Enacted Tax Rate IncomeTaxReconciliationChangeInEnactedTaxRate	185000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	65477000	USD
CY2019	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	-1239000	USD
CY2018	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	-5727000	USD
CY2018	mxl	Attributeexpirations Attributeexpirations	0	USD
CY2020	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	-7507000	USD
CY2019	mxl	Effective Income Tax Reconciliation Other Transaction Costs EffectiveIncomeTaxReconciliationOtherTransactionCosts	0	USD
CY2018	mxl	Effective Income Tax Reconciliation Other Transaction Costs EffectiveIncomeTaxReconciliationOtherTransactionCosts	0	USD
CY2020	mxl	Attributeexpirations Attributeexpirations	-11937000	USD
CY2019	mxl	Attributeexpirations Attributeexpirations	-2837000	USD
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-16259000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-12586000	USD
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-6653000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	65790000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Other Finite Lived Assets DeferredTaxLiabilitiesOtherFiniteLivedAssets	42000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Other Finite Lived Assets DeferredTaxLiabilitiesOtherFiniteLivedAssets	246000	USD
CY2019Q4	mxl	Deferred Tax Asset Leaseobligation DeferredTaxAssetLeaseobligation	2047000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Employee Compensation DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeCompensation	4442000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Employee Compensation DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeCompensation	1441000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost	5415000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards Research DeferredTaxAssetsTaxCreditCarryforwardsResearch	79019000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards Research DeferredTaxAssetsTaxCreditCarryforwardsResearch	80404000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	11669000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	7768000	USD
CY2020Q4	mxl	Deferred Tax Asset Leaseobligation DeferredTaxAssetLeaseobligation	1731000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost	3460000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	168066000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	160597000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	71811000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	77957000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	96255000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	82640000	USD
CY2020	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Expected Long Term Return On Assets DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets	0.0079
CY2020Q4	mxl	Deferred Tax Liability Leasedrightofuseasset DeferredTaxLiabilityLeasedrightofuseasset	1099000	USD
CY2019Q4	mxl	Deferred Tax Liability Leasedrightofuseasset DeferredTaxLiabilityLeasedrightofuseasset	1483000	USD
CY2019	us-gaap	Operating Lease Cost OperatingLeaseCost	3100000	USD
CY2018	us-gaap	Operating Lease Cost OperatingLeaseCost	4500000	USD
CY2020	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	15900000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Goodwill And Intangible Assets Intangible Assets DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets	9049000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Goodwill And Intangible Assets Intangible Assets DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets	13627000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	86065000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	67284000	USD
CY2020Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	63800000	USD
CY2020Q4	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	54300000	USD
CY2020Q4	us-gaap	Income Tax Examination Penalties And Interest Accrued IncomeTaxExaminationPenaltiesAndInterestAccrued	600000	USD
CY2019Q4	us-gaap	Income Tax Examination Penalties And Interest Accrued IncomeTaxExaminationPenaltiesAndInterestAccrued	900000	USD
CY2017Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	63086000	USD
CY2018	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	3080000	USD
CY2018	us-gaap	Unrecognized Tax Benefits Increases Resulting From Acquisition UnrecognizedTaxBenefitsIncreasesResultingFromAcquisition	0	USD
CY2018	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	4696000	USD
CY2018Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	61470000	USD
CY2019	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	1678000	USD
CY2019	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	1121000	USD
CY2019Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	62027000	USD
CY2020	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	1506000	USD
CY2020	us-gaap	Unrecognized Tax Benefits Increases Resulting From Acquisition UnrecognizedTaxBenefitsIncreasesResultingFromAcquisition	1154000	USD
CY2020	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	922000	USD
CY2020Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	63765000	USD
CY2020Q3	us-gaap	Pension And Other Postretirement And Postemployment Benefit Plans Liabilities Current And Noncurrent PensionAndOtherPostretirementAndPostemploymentBenefitPlansLiabilitiesCurrentAndNoncurrent	7900000	USD
CY2020	us-gaap	Defined Benefit Plan Net Periodic Benefit Cost DefinedBenefitPlanNetPeriodicBenefitCost	200000	USD
CY2019Q4	us-gaap	Defined Benefit Plan Benefit Obligation DefinedBenefitPlanBenefitObligation	0	USD
CY2020	us-gaap	Defined Benefit Plan Business Combinations And Acquisitions Benefit Obligation DefinedBenefitPlanBusinessCombinationsAndAcquisitionsBenefitObligation	13274000	USD
CY2020	us-gaap	Defined Benefit Plan Service Cost DefinedBenefitPlanServiceCost	157000	USD
CY2020	us-gaap	Defined Benefit Plan Interest Cost DefinedBenefitPlanInterestCost	59000	USD
CY2020	us-gaap	Defined Benefit Plan Plan Assets Foreign Currency Translation Gain Loss DefinedBenefitPlanPlanAssetsForeignCurrencyTranslationGainLoss	217000	USD
CY2020Q4	us-gaap	Defined Benefit Plan Fair Value Of Plan Assets DefinedBenefitPlanFairValueOfPlanAssets	5634000	USD
CY2020	us-gaap	Defined Benefit Plan Business Combinations And Acquisitions Plan Assets DefinedBenefitPlanBusinessCombinationsAndAcquisitionsPlanAssets	5417000	USD
CY2020Q4	us-gaap	Defined Benefit Plan Amounts Recognized In Balance Sheet DefinedBenefitPlanAmountsRecognizedInBalanceSheet	6388000	USD
CY2020	us-gaap	Defined Benefit Plan Actuarial Gain Loss DefinedBenefitPlanActuarialGainLoss	-1172000	USD
CY2020	us-gaap	Defined Benefit Plan Benefit Obligation Benefits Paid DefinedBenefitPlanBenefitObligationBenefitsPaid	786000	USD
CY2020	us-gaap	Defined Benefit Plan Foreign Currency Exchange Rate Changes Benefit Obligation DefinedBenefitPlanForeignCurrencyExchangeRateChangesBenefitObligation	490000	USD
CY2020Q4	us-gaap	Defined Benefit Plan Benefit Obligation DefinedBenefitPlanBenefitObligation	12022000	USD
CY2019Q4	us-gaap	Defined Benefit Plan Fair Value Of Plan Assets DefinedBenefitPlanFairValueOfPlanAssets	0	USD
CY2020Q4	us-gaap	Defined Benefit Plan Accumulated Other Comprehensive Income Before Tax DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTax	-1172000	USD
CY2020Q4	us-gaap	Defined Benefit Plan Accumulated Benefit Obligation DefinedBenefitPlanAccumulatedBenefitObligation	11100000	USD
CY2019Q1	us-gaap	Revenues Revenues	84635000	USD
CY2020Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Year Two DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo	0	USD
CY2020Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Next Twelve Months DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths	0	USD
CY2020Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Year Three DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree	20000	USD
CY2020Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Year Four DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour	48000	USD
CY2020Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Year Five DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive	48000	USD
CY2020Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Five Fiscal Years Thereafter DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter	762000	USD
CY2020Q4	mxl	Defined Benefit Plan Expected Future Benefits Payments Total DefinedBenefitPlanExpectedFutureBenefitsPaymentsTotal	879000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Renewal Term LesseeOperatingLeaseRenewalTerm	P5Y
CY2020Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.040
CY2019Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.050
CY2020Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P4Y7M6D
CY2019Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P2Y10M24D
CY2019	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	500000	USD
CY2020Q4	us-gaap	Operating Leases Future Minimum Payments Due Current OperatingLeasesFutureMinimumPaymentsDueCurrent	9032000	USD
CY2020Q4	us-gaap	Operating Leases Future Minimum Payments Due In Two Years OperatingLeasesFutureMinimumPaymentsDueInTwoYears	7336000	USD
CY2020Q4	us-gaap	Operating Leases Future Minimum Payments Due In Three Years OperatingLeasesFutureMinimumPaymentsDueInThreeYears	3694000	USD
CY2020Q4	us-gaap	Operating Leases Future Minimum Payments Due In Four Years OperatingLeasesFutureMinimumPaymentsDueInFourYears	2958000	USD
CY2020Q4	us-gaap	Operating Leases Future Minimum Payments Due In Five Years OperatingLeasesFutureMinimumPaymentsDueInFiveYears	2844000	USD
CY2020Q4	us-gaap	Operating Leases Future Minimum Payments Due Thereafter OperatingLeasesFutureMinimumPaymentsDueThereafter	4794000	USD
CY2020Q4	us-gaap	Operating Leases Future Minimum Payments Due OperatingLeasesFutureMinimumPaymentsDue	30658000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	2655000	USD
CY2020	mxl	Unrealizedgainlossontranslationtoreportingcurrency Unrealizedgainlossontranslationtoreportingcurrency	1013000	USD
CY2020Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	29006000	USD
CY2020Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	8144000	USD
CY2020Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	20862000	USD
CY2020	us-gaap	Operating Lease Cost OperatingLeaseCost	5200000	USD
CY2019	mxl	Impairmentofrightofuseasset Impairmentofrightofuseasset	9200000	USD
CY2020Q4	mxl	Operating Leases Future Sublease Income Due Thereafter OperatingLeasesFutureSubleaseIncomeDueThereafter	100000	USD
CY2020	us-gaap	Operating Leases Rent Expense Sublease Rentals1 OperatingLeasesRentExpenseSubleaseRentals1	400000	USD
CY2019	us-gaap	Operating Leases Rent Expense Sublease Rentals1 OperatingLeasesRentExpenseSubleaseRentals1	1200000	USD
CY2018	us-gaap	Operating Leases Rent Expense Sublease Rentals1 OperatingLeasesRentExpenseSubleaseRentals1	2400000	USD
CY2019	mxl	Netgainonextinguishmentofleaseliabilities Netgainonextinguishmentofleaseliabilities	-10100000	USD
CY2019	mxl	Otherrelatedliabilitiesleasetermination Otherrelatedliabilitiesleasetermination	300000	USD
CY2019	mxl	Incomestatementimpactleasetermination Incomestatementimpactleasetermination	-1200000	USD
CY2019	mxl	Gainonextinguishmentofleaseliabilities Gainonextinguishmentofleaseliabilities	10400000	USD
CY2019	mxl	Impairmentofrightofuseasset Impairmentofrightofuseasset	9200000	USD
CY2019	us-gaap	Impairment Of Leasehold ImpairmentOfLeasehold	1400000	USD
CY2020	mxl	Contractual Obligation Change In Balance ContractualObligationChangeInBalance	99100000	USD
CY2020Q4	us-gaap	Contractual Obligation ContractualObligation	121700000	USD
CY2019Q4	us-gaap	Contractual Obligation ContractualObligation	22600000	USD
CY2018	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	384997000	USD
CY2020	mxl	Longlivedassets Longlivedassets	571450000	USD
CY2019	mxl	Longlivedassets Longlivedassets	453892000	USD
CY2020	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	478596000	USD
CY2019	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	317180000	USD
CY2018	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	384997000	USD
CY2020Q4	us-gaap	Contract With Customer Liability ContractWithCustomerLiability	30000.00	USD
CY2019Q4	us-gaap	Contract With Customer Liability ContractWithCustomerLiability	100000	USD
CY2020Q4	mxl	Accrued Price Protection Liability AccruedPriceProtectionLiability	47800000	USD
CY2019Q4	mxl	Accrued Price Protection Liability AccruedPriceProtectionLiability	12600000	USD
CY2020Q4	us-gaap	Contract With Customer Right To Recover Product ContractWithCustomerRightToRecoverProduct	600000	USD
CY2019Q4	us-gaap	Contract With Customer Right To Recover Product ContractWithCustomerRightToRecoverProduct	300000	USD
CY2020Q1	us-gaap	Revenues Revenues	62027000	USD
CY2020Q2	us-gaap	Revenues Revenues	65220000	USD
CY2020Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.50
CY2020Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.33
CY2020Q3	us-gaap	Revenues Revenues	156633000	USD
CY2020Q4	us-gaap	Revenues Revenues	194716000	USD
CY2020Q1	us-gaap	Gross Profit GrossProfit	30762000	USD
CY2020Q2	us-gaap	Gross Profit GrossProfit	32743000	USD
CY2020Q3	us-gaap	Gross Profit GrossProfit	66206000	USD
CY2020Q4	us-gaap	Gross Profit GrossProfit	83087000	USD
CY2020Q1	us-gaap	Net Income Loss NetIncomeLoss	-15469000	USD
CY2020Q2	us-gaap	Net Income Loss NetIncomeLoss	-21807000	USD
CY2020Q3	us-gaap	Net Income Loss NetIncomeLoss	-36645000	USD
CY2020Q4	us-gaap	Net Income Loss NetIncomeLoss	-24672000	USD
CY2020Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.21
CY2020Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.30
CY2020Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.50
CY2020Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.33
CY2020Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.21
CY2020Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.30
CY2019Q2	us-gaap	Net Income Loss NetIncomeLoss	-2229000	USD
CY2019Q2	us-gaap	Revenues Revenues	82507000	USD
CY2019Q3	us-gaap	Revenues Revenues	80020000	USD
CY2019Q4	us-gaap	Revenues Revenues	70018000	USD
CY2019Q1	us-gaap	Gross Profit GrossProfit	45077000	USD
CY2019Q2	us-gaap	Gross Profit GrossProfit	44080000	USD
CY2019Q3	us-gaap	Gross Profit GrossProfit	41904000	USD
CY2019Q4	us-gaap	Gross Profit GrossProfit	36624000	USD
CY2019Q1	us-gaap	Net Income Loss NetIncomeLoss	-4851000	USD
CY2019Q3	us-gaap	Net Income Loss NetIncomeLoss	-4714000	USD
CY2019Q4	us-gaap	Net Income Loss NetIncomeLoss	-8104000	USD
CY2019Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.07
CY2019Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.03
CY2019Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.07
CY2019Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.11
CY2019Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.07
CY2019Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.03
CY2019Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.07
CY2019Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.11

Files In Submission

Name	View Source	Status
0001288469-21-000013-index-headers.html	Edgar Link	pending
0001288469-21-000013-index.html	Edgar Link	pending
0001288469-21-000013.txt	Edgar Link	pending
0001288469-21-000013-xbrl.zip	Edgar Link	pending
a12312020exhibit311.htm	Edgar Link	pending
a12312020exhibit312.htm	Edgar Link	pending
a12312020exhibit321.htm	Edgar Link	pending
a123120exhibit211.htm	Edgar Link	pending
a123120exhibit231.htm	Edgar Link	pending
FilingSummary.xml	Edgar Link	unprocessable
Financial_Report.xlsx	Edgar Link	pending
MetaLinks.json	Edgar Link	pending
mxl-20201231.htm	Edgar Link	pending
mxl-20201231.xsd	Edgar Link	pending
mxl-20201231_cal.xml	Edgar Link	unprocessable
mxl-20201231_def.xml	Edgar Link	unprocessable
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mxl-20201231_htm.xml	Edgar Link	completed
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report.css	Edgar Link	pending
Show.js	Edgar Link	pending

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$MXL
MAXLINEAR, INC Stock $mxl

2020 Q4 Form 10-K Financial Statement

#000128846921000013 Filed on February 11, 2021

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$MXL MAXLINEAR, INC Stock $mxl

2020 Q4 Form 10-K Financial Statement

#000128846921000013 Filed on February 11, 2021

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$MXL
MAXLINEAR, INC Stock $mxl