$NTGR
NETGEAR, INC. Stock $ntgr

$ntgr Overview Financials Valuation SEC Filings Company Website

2020 Q4 Form 10-K Financial Statement

#000156459021006094 Filed on February 16, 2021

Income Statement

Concept	2020 Q4	2020 Q3	2020 Q2
Revenue	$367.1M	$378.1M	$280.1M
YoY Change	45.1%	42.22%	21.31%
Cost Of Revenue	$256.0M	$264.6M	$198.8M
YoY Change	39.59%	40.25%	20.19%
Gross Profit	$111.1M	$113.5M	$81.30M
YoY Change	59.69%	47.03%	24.23%
Gross Profit Margin	30.27%	30.02%	29.03%
Selling, General & Admin	$56.70M	$56.30M	$49.90M
YoY Change	17.63%	24.07%	10.88%
% of Gross Profit	51.03%	49.61%	61.38%
Research & Development	$23.40M	$24.50M	$21.10M
YoY Change	12.5%	25.4%	12.15%
% of Gross Profit	21.06%	21.59%	25.95%
Depreciation & Amortization	$4.700M	$3.300M	$3.200M
YoY Change	-2.08%	10.0%	0.0%
% of Gross Profit	4.23%	2.91%	3.94%
Operating Expenses	$77.20M	$81.33M	$72.40M
YoY Change	10.6%	24.88%	11.18%
Operating Profit	$33.92M	$32.17M	$8.901M
YoY Change	-15729.49%	166.61%	2630.37%
Interest Expense	$0.00	$100.0K	$0.00
YoY Change	-100.0%	-95.45%	-100.0%
% of Operating Profit	0.0%	0.31%	0.0%
Other Income/Expense, Net	$400.0K	-$417.0K	$314.0K
YoY Change	-75.0%	3.47%	-35.52%
Pretax Income	$33.50M	$31.75M	$9.230M
YoY Change	5483.33%	158.1%	478.68%
Income Tax	$2.531M	$6.200M	$3.200M
% Of Pretax Income	7.56%	19.53%	34.67%
Net Earnings	$30.95M	$25.54M	$5.983M
YoY Change	-7468.57%	103.81%	613.11%
Net Earnings / Revenue	8.43%	6.75%	2.14%
Basic Earnings Per Share	$1.02	$0.85	$0.20
Diluted Earnings Per Share	$0.99	$0.83	$0.20
COMMON SHARES
Basic Shares Outstanding		30.04M	29.62M
Diluted Shares Outstanding		30.74M	30.07M

Balance Sheet

Concept	2020 Q4	2020 Q3	2020 Q2
SHORT-TERM ASSETS
Cash & Short-Term Investments	$353.3M	$306.8M	$258.6M
YoY Change	80.53%	78.48%	18.46%
Cash & Equivalents	$346.5M	$300.5M	$252.6M
Short-Term Investments	$6.900M	$6.300M	$5.900M
Other Short-Term Assets	$30.70M	$31.60M	$35.10M
YoY Change	-14.25%	1.28%	-9.3%
Inventory	$172.1M	$144.3M	$150.6M
Prepaid Expenses
Receivables	$337.1M	$340.0M	$277.5M
Other Receivables	$0.00	$0.00	$0.00
Total Short-Term Assets	$893.2M	$822.7M	$721.7M
YoY Change	20.03%	13.21%	-6.51%
LONG-TERM ASSETS
Property, Plant & Equipment	$16.08M	$15.31M	$15.54M
YoY Change	-9.07%	-22.15%	-26.28%
Goodwill	$80.72M
YoY Change	0.0%
Intangibles	$3.899M
YoY Change	-61.41%
Long-Term Investments	$8.400M	$9.100M	$9.900M
YoY Change	3.7%	12.35%	22.22%
Other Assets	$82.75M	$72.95M	$72.34M
YoY Change	11.4%	0.44%	1.31%
Total Long-Term Assets	$212.9M	$205.6M	$207.3M
YoY Change	0.55%	-4.96%	-6.01%
TOTAL ASSETS
Total Short-Term Assets	$893.2M	$822.7M	$721.7M
Total Long-Term Assets	$212.9M	$205.6M	$207.3M
Total Assets	$1.106B	$1.028B	$929.0M
YoY Change	15.72%	9.04%	-6.4%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$90.90M	$87.70M	$76.10M
YoY Change	12.88%	4.51%	-29.83%
Accrued Expenses	$218.4M	$196.3M	$163.1M
YoY Change	15.21%	20.18%	-5.12%
Deferred Revenue	$13.46M	$10.88M
YoY Change	108.65%	87.25%
Short-Term Debt	$0.00	$0.00	$0.00
YoY Change
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities	$365.1M	$326.0M	$270.3M
YoY Change	22.35%	19.64%	-14.19%
LONG-TERM LIABILITIES
Long-Term Debt	$0.00	$0.00	$0.00
YoY Change
Other Long-Term Liabilities	$6.896M	$56.00M	$52.50M
YoY Change	-13.67%	595.48%	563.97%
Total Long-Term Liabilities	$6.896M	$56.00M	$52.50M
YoY Change	-13.67%	595.48%	563.97%
TOTAL LIABILITIES
Total Short-Term Liabilities	$365.1M	$326.0M	$270.3M
Total Long-Term Liabilities	$6.896M	$56.00M	$52.50M
Total Liabilities	$416.7M	$382.0M	$322.8M
YoY Change	20.03%	19.03%	-12.86%
SHAREHOLDERS EQUITY
Retained Earnings	-$193.3M
YoY Change	-13.2%
Common Stock	$30.00K
YoY Change	0.0%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$689.4M	$646.3M	$606.1M
YoY Change
Total Liabilities & Shareholders Equity	$1.106B	$1.028B	$929.0M
YoY Change	15.72%	9.04%	-6.4%

Cashflow Statement

Concept	2020 Q4	2020 Q3	2020 Q2
OPERATING ACTIVITIES
Net Income	$30.95M	$25.54M	$5.983M
YoY Change	-7468.57%	103.81%	613.11%
Depreciation, Depletion And Amortization	$4.700M	$3.300M	$3.200M
YoY Change	-2.08%	10.0%	0.0%
Cash From Operating Activities	$46.10M	$42.90M	$63.20M
YoY Change	-6.87%	-264.37%	131.5%
INVESTING ACTIVITIES
Capital Expenditures	-$4.200M	-$2.500M	-$2.300M
YoY Change	75.0%	4.17%	-32.35%
Acquisitions
YoY Change
Other Investing Activities	-$200.0K	$0.00	-$6.100M
YoY Change	-84.62%	-100.0%	-125.96%
Cash From Investing Activities	-$4.400M	-$2.500M	-$8.400M
YoY Change	18.92%	-7.41%	-141.79%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	4.300M	7.500M	-6.500M
YoY Change	-118.22%	-142.13%	-64.67%
NET CHANGE
Cash From Operating Activities	46.10M	42.90M	63.20M
Cash From Investing Activities	-4.400M	-2.500M	-8.400M
Cash From Financing Activities	4.300M	7.500M	-6.500M
Net Change In Cash	46.00M	47.90M	48.30M
YoY Change	107.21%	-202.79%	66.55%
FREE CASH FLOW
Cash From Operating Activities	$46.10M	$42.90M	$63.20M
Capital Expenditures	-$4.200M	-$2.500M	-$2.300M
Free Cash Flow	$50.30M	$45.40M	$65.50M
YoY Change	-3.08%	-291.56%	113.36%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value
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CY2019Q4	us-gaap	Liabilities Current LiabilitiesCurrent	298391000
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	Document Annual Report DocumentAnnualReport	true
CY2020	dei	Document Transition Report DocumentTransitionReport	false
CY2020	dei	Entity File Number EntityFileNumber	000-50350
CY2020	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	DE
CY2020	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	77-0419172
CY2020	dei	Entity Address Address Line1 EntityAddressAddressLine1	350 East Plumeria Drive
CY2020	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	95134
CY2020	dei	Entity Address City Or Town EntityAddressCityOrTown	San Jose
CY2020	dei	Entity Address State Or Province EntityAddressStateOrProvince	CA
CY2020	dei	City Area Code CityAreaCode	(408)
CY2020	dei	Local Phone Number LocalPhoneNumber	907-8000
CY2020	dei	Security12b Title Security12bTitle	Common Stock, $0.001 par value
CY2020	dei	Security Exchange Name SecurityExchangeName	NASDAQ
CY2020	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
CY2020	dei	Entity Shell Company EntityShellCompany	false
CY2020Q2	dei	Entity Public Float EntityPublicFloat	705100000
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CY2019Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies
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CY2020Q4	us-gaap	Revenue Remaining Performance Obligation Expected Timing Of Satisfaction Period1 RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1	P1Y
CY2019Q4	us-gaap	Revenue Remaining Performance Obligation Expected Timing Of Satisfaction Period1 RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1
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CY2019Q4	us-gaap	Operating Lease Liability Current Statement Of Financial Position Extensible List OperatingLeaseLiabilityCurrentStatementOfFinancialPositionExtensibleList	ntgr:OperatingLeaseLiabilityCurrentMember
CY2020Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P4Y2M12D
CY2019Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P4Y6M
CY2019Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	190208000
CY2019Q4	us-gaap	Short Term Investments ShortTermInvestments	5499000
CY2019Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	1079000
CY2019Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	277168000
CY2019Q4	us-gaap	Inventory Net InventoryNet	235489000
CY2019Q4	us-gaap	Prepaid Expense And Other Assets Current PrepaidExpenseAndOtherAssetsCurrent	35745000
CY2019Q4	us-gaap	Assets Current AssetsCurrent	744109000
CY2019Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	17683000
CY2019Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	28917000
CY2019Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	10104000
CY2019Q4	us-gaap	Goodwill Goodwill	80721000
CY2019Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	74279000
CY2019Q4	us-gaap	Assets Assets	955813000
CY2019Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	80531000
CY2019Q4	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	20024000
CY2019Q4	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	189547000
CY2019Q4	us-gaap	Contract With Customer Liability Current ContractWithCustomerLiabilityCurrent	6450000
CY2019Q4	us-gaap	Accrued Income Taxes Current AccruedIncomeTaxesCurrent	1839000
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CY2019Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.001
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CY2019Q4	us-gaap	Common Stock Value CommonStockValue	30000
CY2019Q4	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	831365000
CY2019Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	21000
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CY2018	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	510000
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	43204000
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CY2018	us-gaap	Increase Decrease In Other Accrued Liabilities IncreaseDecreaseInOtherAccruedLiabilities	15589000
CY2020	us-gaap	Increase Decrease In Contract With Customer Liability IncreaseDecreaseInContractWithCustomerLiability	8112000
CY2019	us-gaap	Increase Decrease In Contract With Customer Liability IncreaseDecreaseInContractWithCustomerLiability	-3354000
CY2018	us-gaap	Increase Decrease In Contract With Customer Liability IncreaseDecreaseInContractWithCustomerLiability	5759000
CY2020	us-gaap	Increase Decrease In Accrued Income Taxes Payable IncreaseDecreaseInAccruedIncomeTaxesPayable	9346000
CY2019	us-gaap	Increase Decrease In Accrued Income Taxes Payable IncreaseDecreaseInAccruedIncomeTaxesPayable	-4474000
CY2018	us-gaap	Increase Decrease In Accrued Income Taxes Payable IncreaseDecreaseInAccruedIncomeTaxesPayable	-16939000
CY2020	us-gaap	Net Cash Provided By Used In Operating Activities Continuing Operations NetCashProvidedByUsedInOperatingActivitiesContinuingOperations	181150000
CY2019	us-gaap	Net Cash Provided By Used In Operating Activities Continuing Operations NetCashProvidedByUsedInOperatingActivitiesContinuingOperations	13525000
CY2018	us-gaap	Net Cash Provided By Used In Operating Activities Continuing Operations NetCashProvidedByUsedInOperatingActivitiesContinuingOperations	-15059000
CY2020	us-gaap	Cash Provided By Used In Operating Activities Discontinued Operations CashProvidedByUsedInOperatingActivitiesDiscontinuedOperations	0
CY2019	us-gaap	Cash Provided By Used In Operating Activities Discontinued Operations CashProvidedByUsedInOperatingActivitiesDiscontinuedOperations	0
CY2018	us-gaap	Cash Provided By Used In Operating Activities Discontinued Operations CashProvidedByUsedInOperatingActivitiesDiscontinuedOperations	-88152000
CY2018	us-gaap	Payments To Acquire Short Term Investments PaymentsToAcquireShortTermInvestments	81814000
CY2020	us-gaap	Proceeds From Sale Maturity And Collection Of Shortterm Investments ProceedsFromSaleMaturityAndCollectionOfShorttermInvestments	290000
CY2019	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	13525000
CY2018	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	-103211000
CY2019	us-gaap	Proceeds From Sale Maturity And Collection Of Shortterm Investments ProceedsFromSaleMaturityAndCollectionOfShorttermInvestments	70790000
CY2019	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	0
CY2018	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	14352000
CY2020	us-gaap	Net Cash Provided By Used In Investing Activities Continuing Operations NetCashProvidedByUsedInInvestingActivitiesContinuingOperations	-16836000
CY2019	us-gaap	Net Cash Provided By Used In Investing Activities Continuing Operations NetCashProvidedByUsedInInvestingActivitiesContinuingOperations	49459000
CY2018	us-gaap	Net Cash Provided By Used In Investing Activities Continuing Operations NetCashProvidedByUsedInInvestingActivitiesContinuingOperations	28174000
CY2020	us-gaap	Cash Provided By Used In Investing Activities Discontinued Operations CashProvidedByUsedInInvestingActivitiesDiscontinuedOperations	0
CY2020	us-gaap	Payments To Acquire Short Term Investments PaymentsToAcquireShortTermInvestments	305000
CY2019	us-gaap	Payments To Acquire Short Term Investments PaymentsToAcquireShortTermInvestments	1617000
CY2018	us-gaap	Proceeds From Sale Maturity And Collection Of Shortterm Investments ProceedsFromSaleMaturityAndCollectionOfShorttermInvestments	137058000
CY2020	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	10296000
CY2019	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	14230000
CY2018	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	12251000
CY2020	us-gaap	Payments To Acquire Other Investments PaymentsToAcquireOtherInvestments	6525000
CY2019	us-gaap	Payments To Acquire Other Investments PaymentsToAcquireOtherInvestments	5484000
CY2018	us-gaap	Payments To Acquire Other Investments PaymentsToAcquireOtherInvestments	1091000
CY2020	us-gaap	Proceeds From Sale Maturity And Collections Of Investments ProceedsFromSaleMaturityAndCollectionsOfInvestments	0
CY2019	us-gaap	Proceeds From Sale Maturity And Collections Of Investments ProceedsFromSaleMaturityAndCollectionsOfInvestments	0
CY2018	us-gaap	Proceeds From Sale Maturity And Collections Of Investments ProceedsFromSaleMaturityAndCollectionsOfInvestments	624000
CY2020	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	0
CY2019	us-gaap	Cash Provided By Used In Investing Activities Discontinued Operations CashProvidedByUsedInInvestingActivitiesDiscontinuedOperations	0
CY2018	us-gaap	Cash Provided By Used In Investing Activities Discontinued Operations CashProvidedByUsedInInvestingActivitiesDiscontinuedOperations	-71363000
CY2020	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-16836000
CY2019	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	49459000
CY2018	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-43189000
CY2020	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	23800000
CY2019	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	75946000
CY2018	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	30000000
CY2020	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	5090000
CY2019	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	6521000
CY2018	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	8065000
CY2020	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	16950000
CY2019	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	5027000
CY2018	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	6841000
CY2020	us-gaap	Proceeds From Stock Plans ProceedsFromStockPlans	3878000
CY2019	us-gaap	Proceeds From Stock Plans ProceedsFromStockPlans	3617000
CY2018	us-gaap	Proceeds From Stock Plans ProceedsFromStockPlans	5554000
CY2020	us-gaap	Net Cash Provided By Used In Financing Activities Continuing Operations NetCashProvidedByUsedInFinancingActivitiesContinuingOperations	-8062000
CY2019	us-gaap	Net Cash Provided By Used In Financing Activities Continuing Operations NetCashProvidedByUsedInFinancingActivitiesContinuingOperations	-73823000
CY2018	us-gaap	Net Cash Provided By Used In Financing Activities Continuing Operations NetCashProvidedByUsedInFinancingActivitiesContinuingOperations	-25670000
CY2020	us-gaap	Cash Provided By Used In Financing Activities Discontinued Operations CashProvidedByUsedInFinancingActivitiesDiscontinuedOperations	0
CY2019	us-gaap	Cash Provided By Used In Financing Activities Discontinued Operations CashProvidedByUsedInFinancingActivitiesDiscontinuedOperations	0
CY2018	us-gaap	Cash Provided By Used In Financing Activities Discontinued Operations CashProvidedByUsedInFinancingActivitiesDiscontinuedOperations	170247000
CY2020	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-8062000
CY2019	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-73823000
CY2018	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	144577000
CY2020	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	156252000
CY2019	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-10839000
CY2018	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-1823000
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	346460000
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	190208000
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	201047000
CY2020	us-gaap	Income Taxes Paid IncomeTaxesPaid	8218000
CY2019	us-gaap	Income Taxes Paid IncomeTaxesPaid	8876000
CY2018	us-gaap	Income Taxes Paid IncomeTaxesPaid	23220000
CY2020	ntgr	Change In Accounts Payable And Other Accrued Liabilities Relating To Property And Equipment Additions ChangeInAccountsPayableAndOtherAccruedLiabilitiesRelatingToPropertyAndEquipmentAdditions	846000
CY2019	ntgr	Change In Accounts Payable And Other Accrued Liabilities Relating To Property And Equipment Additions ChangeInAccountsPayableAndOtherAccruedLiabilitiesRelatingToPropertyAndEquipmentAdditions	-4360000
CY2018	ntgr	Change In Accounts Payable And Other Accrued Liabilities Relating To Property And Equipment Additions ChangeInAccountsPayableAndOtherAccruedLiabilitiesRelatingToPropertyAndEquipmentAdditions	2604000
CY2020Q4	us-gaap	Business Combination Contingent Consideration Liability Noncurrent BusinessCombinationContingentConsiderationLiabilityNoncurrent	0
CY2019Q4	us-gaap	Business Combination Contingent Consideration Liability Noncurrent BusinessCombinationContingentConsiderationLiabilityNoncurrent	0
CY2018Q4	us-gaap	Business Combination Contingent Consideration Liability Noncurrent BusinessCombinationContingentConsiderationLiabilityNoncurrent	5953000
CY2020	us-gaap	Fiscal Period FiscalPeriod	<p style="text-align:justify;margin-top:10pt;margin-bottom:0pt;margin-left:1.92%;text-indent:0%;font-weight:bold;font-style:italic;font-family:Times New Roman;font-size:10pt;text-transform:none;font-variant: normal;">Fiscal periods</p> <p style="text-align:justify;margin-top:10pt;margin-bottom:0pt;text-indent:4.81%;font-family:Times New Roman;font-size:10pt;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">The Company's fiscal year begins on January 1 of the year stated and ends on December 31 of the same year. The Company reports its results on a fiscal quarter basis rather than on a calendar quarter basis. Under the fiscal quarter basis, each of the first three fiscal quarters ends on the Sunday closest to the calendar quarter end, with the fourth quarter ending on December 31.</p>
CY2020	us-gaap	Equity Securities Without Readily Determinable Fair Value Impairment Loss Annual Amount EquitySecuritiesWithoutReadilyDeterminableFairValueImpairmentLossAnnualAmount	6200000
CY2020	us-gaap	Use Of Estimates UseOfEstimates	<p style="text-align:justify;margin-top:10pt;margin-bottom:0pt;margin-left:1.92%;text-indent:0%;font-weight:bold;font-style:italic;font-family:Times New Roman;font-size:10pt;text-transform:none;font-variant: normal;">Use of estimates</p> <p style="text-align:justify;margin-top:10pt;margin-bottom:0pt;text-indent:4.81%;font-family:Times New Roman;font-size:10pt;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">The preparation of financial statements in conformity with U.S. generally accepted accounting principles ("GAAP") requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reported period. Actual results could differ from those estimates. <span style="color:#000000;">As of the date of issuance of these consolidated financial statements, the Company is not aware of any specific event or circumstance that would require it to update its estimates, judgments or revise the carrying value of its assets or liabilities. These estimates may change, as new events occur and additional information is obtained, and are recognized in the consolidated financial statements as soon as they become known.</span></p>
CY2020	us-gaap	Concentration Risk Credit Risk ConcentrationRiskCreditRisk	<p style="text-align:justify;margin-top:10pt;margin-bottom:0pt;margin-left:1.92%;text-indent:0%;font-weight:bold;font-style:italic;font-family:Times New Roman;font-size:10pt;text-transform:none;font-variant: normal;">Concentration of credit risk</p> <p style="text-align:justify;margin-top:10pt;margin-bottom:0pt;text-indent:4.81%;font-family:Times New Roman;font-size:10pt;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">Financial instruments that potentially subject the Company to a concentration of credit risk consist of cash and cash equivalents, short-term investments and accounts receivable. The Company believes that there is minimal credit risk associated with the investment of its cash and cash equivalents and short-term investments, due to the restrictions placed on the type of investment that can be entered into under the Company's investment policy. The Company's short-term investments consist of investment-grade securities, and the Company's cash and investments are held and managed by recognized financial institutions.</p> <p style="text-align:justify;margin-top:10pt;margin-bottom:0pt;text-indent:4.81%;font-family:Times New Roman;font-size:10pt;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">The Company's customers are primarily distributors as well as retailers and broadband service providers who sell or distribute the products to a large group of end-users. The Company maintains an allowance for doubtful accounts for estimated losses resulting from the inability of the Company's customers to make required payments. The Company regularly performs credit evaluations of the Company's customers' financial condition and considers factors such as historical experience, credit quality, age of the accounts receivable balances, geographic or country-specific risks and current economic conditions that may affect customers' ability to pay. The Company does not require collateral from its customers.</p> <p style="text-align:justify;margin-top:10pt;margin-bottom:0pt;text-indent:4.81%;font-family:Times New Roman;font-size:10pt;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">As of December 31, 2020, Best Buy, Inc. and affiliates, Amazon and affiliates and Walmart and affiliates accounted for approximately 29%, 13% and 13% of the Company's total accounts receivable, respectively. As of December 31, 2019, Best Buy, Inc. and affiliates, Amazon and affiliates, and Walmart and affiliates accounted for 34%, 13% and 10% of the Company's total accounts receivable, respectively. No other customers accounted for 10% or greater of the Company's total accounts receivable.</p> <p style="text-align:justify;margin-top:10pt;margin-bottom:0pt;text-indent:4.81%;font-family:Times New Roman;font-size:10pt;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">The Company is exposed to credit loss in the event of nonperformance by counterparties to the foreign currency forward contracts used to mitigate the effect of foreign currency exchange rate changes. The Company believes the counterparties for its outstanding contracts are large, financially sound institutions and thus, the Company does not anticipate nonperformance by these counterparties. In the event of turbulence or the onset of a financial crisis in financial markets, the failure of counterparties cannot be ruled out.</p>
CY2020	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	2
CY2020	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	2
CY2020	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0
CY2019	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0
CY2018	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0
CY2020Q4	us-gaap	Goodwill Impaired Accumulated Impairment Loss GoodwillImpairedAccumulatedImpairmentLoss	74200000
CY2020	us-gaap	Revenue Performance Obligation Description Of Timing RevenuePerformanceObligationDescriptionOfTiming	Service contracts are generally for 30 days or 12 months in length, billed either monthly or annually and generally in advance.
CY2020	us-gaap	Marketing And Advertising Expense MarketingAndAdvertisingExpense	20600000
CY2019	us-gaap	Marketing And Advertising Expense MarketingAndAdvertisingExpense	21300000
CY2018	us-gaap	Marketing And Advertising Expense MarketingAndAdvertisingExpense	24700000
CY2020Q4	us-gaap	Revenue Remaining Performance Obligation RevenueRemainingPerformanceObligation	81926000
CY2020Q4	us-gaap	Revenue Remaining Performance Obligation RevenueRemainingPerformanceObligation	2102000
CY2020Q4	us-gaap	Revenue Remaining Performance Obligation RevenueRemainingPerformanceObligation	1153000
CY2020Q4	us-gaap	Revenue Remaining Performance Obligation RevenueRemainingPerformanceObligation	85181000
CY2020Q4	us-gaap	Capitalized Contract Cost Net CapitalizedContractCostNet	2900000
CY2019Q4	us-gaap	Capitalized Contract Cost Net CapitalizedContractCostNet	1500000
CY2020	us-gaap	Capitalized Contract Cost Impairment Loss CapitalizedContractCostImpairmentLoss	0
CY2019	us-gaap	Capitalized Contract Cost Impairment Loss CapitalizedContractCostImpairmentLoss	0
CY2020Q4	ntgr	Deferred Commissions DeferredCommissions	0
CY2019Q4	ntgr	Deferred Commissions DeferredCommissions	0
CY2020Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	337052000
CY2019Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	277168000
CY2020Q4	us-gaap	Contract With Customer Liability Current ContractWithCustomerLiabilityCurrent	13458000
CY2019Q4	us-gaap	Contract With Customer Liability Current ContractWithCustomerLiabilityCurrent	6450000
CY2020Q4	us-gaap	Contract With Customer Liability Noncurrent ContractWithCustomerLiabilityNoncurrent	3165000
CY2019Q4	us-gaap	Contract With Customer Liability Noncurrent ContractWithCustomerLiabilityNoncurrent	2061000
CY2020	ntgr	Contract With Customer Liability Increase Due To Unsatisfied Performance Obligations ContractWithCustomerLiabilityIncreaseDueToUnsatisfiedPerformanceObligations	25000000.0
CY2019	ntgr	Contract With Customer Liability Increase Due To Unsatisfied Performance Obligations ContractWithCustomerLiabilityIncreaseDueToUnsatisfiedPerformanceObligations	14500000
CY2020	ntgr	Revenue Recognized For Satisfaction Of Performance Obligations RevenueRecognizedForSatisfactionOfPerformanceObligations	16900000
CY2019	ntgr	Revenue Recognized For Satisfaction Of Performance Obligations RevenueRecognizedForSatisfactionOfPerformanceObligations	17900000
CY2020	us-gaap	Contract With Customer Liability Revenue Recognized ContractWithCustomerLiabilityRevenueRecognized	6500000
CY2019	us-gaap	Contract With Customer Liability Revenue Recognized ContractWithCustomerLiabilityRevenueRecognized	9900000
CY2020	ntgr	Number Of Geographic Regions NumberOfGeographicRegions	3
CY2020	us-gaap	Number Of Operating Segments NumberOfOperatingSegments	2
CY2020	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	2
CY2020	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	1255202000
CY2019	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	998763000
CY2018	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	1058816000
CY2020	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	1255202000
CY2019	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	998763000
CY2018	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	1058816000
CY2018	ntgr	Distribution Of Shares Outstanding Conversion Ratio DistributionOfSharesOutstandingConversionRatio	1.980295
	ntgr	Professional Fees Including Discontinued Operations ProfessionalFeesIncludingDiscontinuedOperations	34200000
	us-gaap	Disposal Group Including Discontinued Operation Operating Expense DisposalGroupIncludingDiscontinuedOperationOperatingExpense	6300000
CY2020Q4	us-gaap	Business Combination Assets And Liabilities Arising From Contingencies Amount Recognized BusinessCombinationAssetsAndLiabilitiesArisingFromContingenciesAmountRecognized	3000000.0
CY2019Q4	us-gaap	Business Combination Assets And Liabilities Arising From Contingencies Amount Recognized BusinessCombinationAssetsAndLiabilitiesArisingFromContingenciesAmountRecognized	5900000
CY2019	us-gaap	Equity Securities Without Readily Determinable Fair Value Downward Price Adjustment Annual Amount EquitySecuritiesWithoutReadilyDeterminableFairValueDownwardPriceAdjustmentAnnualAmount	223000
CY2020Q4	us-gaap	Inventory Raw Materials Net Of Reserves InventoryRawMaterialsNetOfReserves	7756000
CY2019Q4	us-gaap	Inventory Raw Materials Net Of Reserves InventoryRawMaterialsNetOfReserves	28871000
CY2020Q4	us-gaap	Inventory Finished Goods Net Of Reserves InventoryFinishedGoodsNetOfReserves	164356000
CY2019Q4	us-gaap	Inventory Finished Goods Net Of Reserves InventoryFinishedGoodsNetOfReserves	206618000
CY2020Q4	us-gaap	Inventory Net InventoryNet	172112000
CY2019Q4	us-gaap	Inventory Net InventoryNet	235489000
CY2020	us-gaap	Inventory Write Down InventoryWriteDown	7900000
CY2019	us-gaap	Inventory Write Down InventoryWriteDown	3900000
CY2018	us-gaap	Inventory Write Down InventoryWriteDown	2900000
CY2020Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	130879000
CY2019Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	116008000
CY2020Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	114799000
CY2019Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	98325000
CY2020Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	16080000
CY2019Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	17683000
CY2020	us-gaap	Depreciation Depreciation	12700000
CY2019	us-gaap	Depreciation Depreciation	12300000
CY2018	us-gaap	Depreciation Depreciation	10500000
CY2020Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	126944000
CY2020Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	123045000
CY2020Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	514000
CY2019Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	126944000
CY2019Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	116840000
CY2019Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	10104000
CY2020	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	6200000
CY2019	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	7000000.0
CY2018	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	8300000
CY2020	us-gaap	Impairment Of Intangible Assets Indefinitelived Excluding Goodwill ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill	0
CY2019	us-gaap	Impairment Of Intangible Assets Indefinitelived Excluding Goodwill ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill	0
CY2018	us-gaap	Impairment Of Intangible Assets Indefinitelived Excluding Goodwill ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill	0
CY2020Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Next Twelve Months FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths	2044000
CY2020Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	527000
CY2020Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Three FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	514000
CY2020Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Five FiniteLivedIntangibleAssetsAmortizationExpenseYearFive	300000
CY2020Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	3899000
CY2020Q4	us-gaap	Deferred Income Tax Assets Net DeferredIncomeTaxAssetsNet	68323000
CY2019Q4	us-gaap	Deferred Income Tax Assets Net DeferredIncomeTaxAssetsNet	58930000
CY2020Q4	us-gaap	Long Term Investments LongTermInvestments	8395000
CY2019Q4	us-gaap	Long Term Investments LongTermInvestments	8147000
CY2020Q4	us-gaap	Other Assets Miscellaneous Noncurrent OtherAssetsMiscellaneousNoncurrent	6032000
CY2019Q4	us-gaap	Other Assets Miscellaneous Noncurrent OtherAssetsMiscellaneousNoncurrent	7202000
CY2020Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	82750000
CY2019Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	74279000
CY2018Q4	us-gaap	Equity Securities Without Readily Determinable Fair Value Amount EquitySecuritiesWithoutReadilyDeterminableFairValueAmount	2886000
CY2019	ntgr	Equity Securities Without Readily Determinable Fair Value Amount Additions EquitySecuritiesWithoutReadilyDeterminableFairValueAmountAdditions	5484000
CY2019Q4	us-gaap	Equity Securities Without Readily Determinable Fair Value Amount EquitySecuritiesWithoutReadilyDeterminableFairValueAmount	8147000
CY2020	ntgr	Equity Securities Without Readily Determinable Fair Value Amount Additions EquitySecuritiesWithoutReadilyDeterminableFairValueAmountAdditions	5850000
CY2020	us-gaap	Equity Securities Without Readily Determinable Fair Value Impairment Loss Annual Amount EquitySecuritiesWithoutReadilyDeterminableFairValueImpairmentLossAnnualAmount	6239000
CY2020Q4	us-gaap	Equity Securities Without Readily Determinable Fair Value Amount EquitySecuritiesWithoutReadilyDeterminableFairValueAmount	7758000
CY2020Q4	ntgr	Equity Securities Without Readily Determinable Fair Value Downward Price Change And Impairment Loss Cumulative Amount EquitySecuritiesWithoutReadilyDeterminableFairValueDownwardPriceChangeAndImpairmentLossCumulativeAmount	7900000
CY2020Q4	us-gaap	Equity Securities Without Readily Determinable Fair Value Upward Price Adjustment Cumulative Amount EquitySecuritiesWithoutReadilyDeterminableFairValueUpwardPriceAdjustmentCumulativeAmount	200000
CY2020Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	9149000
CY2019Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	9357000
CY2020Q4	us-gaap	Accrued Marketing Costs Current AccruedMarketingCostsCurrent	83561000
CY2019Q4	us-gaap	Accrued Marketing Costs Current AccruedMarketingCostsCurrent	85605000
CY2020Q4	us-gaap	Product Warranty Accrual Classified Current ProductWarrantyAccrualClassifiedCurrent	9240000
CY2019Q4	us-gaap	Product Warranty Accrual Classified Current ProductWarrantyAccrualClassifiedCurrent	10556000
CY2020Q4	us-gaap	Contract With Customer Refund Liability Current ContractWithCustomerRefundLiabilityCurrent	66972000
CY2019Q4	us-gaap	Contract With Customer Refund Liability Current ContractWithCustomerRefundLiabilityCurrent	52612000
CY2020Q4	ntgr	Accrued Freight Charges AccruedFreightCharges	14885000
CY2019Q4	ntgr	Accrued Freight Charges AccruedFreightCharges	5633000
CY2020Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	34568000
CY2019Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	25784000
CY2020Q4	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	218375000
CY2019Q4	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	189547000
CY2020Q4	ntgr	Inventory Expected To Be Received From Future Sales Returns InventoryExpectedToBeReceivedFromFutureSalesReturns	32600000
CY2019Q4	ntgr	Inventory Expected To Be Received From Future Sales Returns InventoryExpectedToBeReceivedFromFutureSalesReturns	26800000
CY2020Q4	ntgr	Provisions To Write Down Expected Returned Inventory To Net Realizable Value ProvisionsToWriteDownExpectedReturnedInventoryToNetRealizableValue	18000000.0
CY2019Q4	ntgr	Provisions To Write Down Expected Returned Inventory To Net Realizable Value ProvisionsToWriteDownExpectedReturnedInventoryToNetRealizableValue	14900000
CY2020Q4	us-gaap	Derivative Fair Value Of Derivative Asset DerivativeFairValueOfDerivativeAsset	324000
CY2019Q4	us-gaap	Derivative Fair Value Of Derivative Asset DerivativeFairValueOfDerivativeAsset	152000
CY2020Q4	us-gaap	Derivative Fair Value Of Derivative Liability DerivativeFairValueOfDerivativeLiability	2382000
CY2019Q4	us-gaap	Derivative Fair Value Of Derivative Liability DerivativeFairValueOfDerivativeLiability	525000
CY2020	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	58293000
CY2019	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	25791000
CY2018	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	17326000
CY2020	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	0
CY2019	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	0
CY2018	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	-35655000
CY2020	us-gaap	Profit Loss ProfitLoss	58293000
CY2019	us-gaap	Profit Loss ProfitLoss	25791000
CY2018	us-gaap	Profit Loss ProfitLoss	-18329000
CY2020	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	0
CY2019	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	0
CY2018	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	9167000
CY2020	us-gaap	Net Income Loss NetIncomeLoss	58293000
CY2019	us-gaap	Net Income Loss NetIncomeLoss	25791000
CY2018	us-gaap	Net Income Loss NetIncomeLoss	-9162000
CY2020	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	29897000
CY2019	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	30936000
CY2018	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	31626000
CY2020	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	743000
CY2019	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	1029000
CY2018	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	1511000
CY2020	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	30640000
CY2019	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	31965000
CY2018	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	33137000
CY2020	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	1.95
CY2019	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	0.83
CY2018	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	0.55
CY2020	us-gaap	Discontinued Operation Income Loss From Discontinued Operation Net Of Tax Per Basic Share DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerBasicShare	0
CY2019	us-gaap	Discontinued Operation Income Loss From Discontinued Operation Net Of Tax Per Basic Share DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerBasicShare	0
CY2018	us-gaap	Discontinued Operation Income Loss From Discontinued Operation Net Of Tax Per Basic Share DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerBasicShare	-0.84
CY2020	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.95
CY2019	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.83
CY2018	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.29
CY2020	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	1.90
CY2019	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	0.81
CY2018	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	0.52
CY2020	us-gaap	Discontinued Operation Income Loss From Discontinued Operation Net Of Tax Per Diluted Share DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerDilutedShare	0
CY2019	us-gaap	Discontinued Operation Income Loss From Discontinued Operation Net Of Tax Per Diluted Share DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerDilutedShare	0
CY2018	us-gaap	Discontinued Operation Income Loss From Discontinued Operation Net Of Tax Per Diluted Share DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerDilutedShare	-0.80
CY2020	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.90
CY2019	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.81
CY2018	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.28
CY2020	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	832000
CY2019	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	1066000
CY2018	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	815000
CY2020	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	4420000
CY2019	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	-697000
CY2018	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	-2675000
CY2020	us-gaap	Gain Loss On Derivative Instruments Net Pretax GainLossOnDerivativeInstrumentsNetPretax	-3861000
CY2019	us-gaap	Gain Loss On Derivative Instruments Net Pretax GainLossOnDerivativeInstrumentsNetPretax	1307000
CY2018	us-gaap	Gain Loss On Derivative Instruments Net Pretax GainLossOnDerivativeInstrumentsNetPretax	3968000
CY2020	us-gaap	Gain Loss On Investments GainLossOnInvestments	-6222000
CY2019	us-gaap	Gain Loss On Investments GainLossOnInvestments	-224000
CY2018	us-gaap	Gain Loss On Investments GainLossOnInvestments	-861000
CY2020	ntgr	Other Income Expense OtherIncomeExpense	486000
CY2019	ntgr	Other Income Expense OtherIncomeExpense	458000
CY2018	ntgr	Other Income Expense OtherIncomeExpense	78000
CY2020	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-5177000
CY2019	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	844000
CY2018	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	510000
CY2020	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	42124000
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	16035000
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	32237000
CY2020	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	28679000
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	13536000
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	10967000
CY2020	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	70803000
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	29571000
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	43204000
CY2020	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	12913000
CY2019	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	4761000
CY2018	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	-587000
CY2020	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	3587000
CY2019	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	791000
CY2018	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	-2338000
CY2020	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	5178000
CY2019	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	-386000
CY2018	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	4267000
CY2020	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	21678000
CY2019	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	5166000
CY2018	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	1342000
CY2020	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-3052000
CY2019	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-574000
CY2018	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	20930000
CY2020	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-6408000
CY2019	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	104000
CY2018	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	2514000
CY2020	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	292000
CY2019	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	-916000
CY2018	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	1092000
CY2020	ntgr	Deferred Income Taxes Expense Benefit DeferredIncomeTaxesExpenseBenefit	-9168000
CY2019	ntgr	Deferred Income Taxes Expense Benefit DeferredIncomeTaxesExpenseBenefit	-1386000
CY2018	ntgr	Deferred Income Taxes Expense Benefit DeferredIncomeTaxesExpenseBenefit	24536000
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	12510000
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	3780000
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	25878000
CY2020Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost	5374000
CY2020Q4	ntgr	Deferred Tax Assets Tax Accruals And Allowance DeferredTaxAssetsTaxAccrualsAndAllowance	25041000
CY2019Q4	ntgr	Deferred Tax Assets Tax Accruals And Allowance DeferredTaxAssetsTaxAccrualsAndAllowance	20743000
CY2020Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	1352000
CY2019Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	1267000
CY2020Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	2900000
CY2019Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	6400000
CY2020	us-gaap	Valuation Allowance Deferred Tax Asset Change In Amount ValuationAllowanceDeferredTaxAssetChangeInAmount	-3500000
CY2019Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost	6381000
CY2020Q4	ntgr	Deferred Tax Assets Operating Lease Liability DeferredTaxAssetsOperatingLeaseLiability	5303000
CY2019Q4	ntgr	Deferred Tax Assets Operating Lease Liability DeferredTaxAssetsOperatingLeaseLiability	6456000
CY2020Q4	us-gaap	Deferred Tax Assets Deferred Income DeferredTaxAssetsDeferredIncome	641000
CY2019Q4	us-gaap	Deferred Tax Assets Deferred Income DeferredTaxAssetsDeferredIncome	1449000
CY2019Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards DeferredTaxAssetsTaxCreditCarryforwards	896000
CY2020Q4	ntgr	Deferred Tax Assets Intangible Assets DeferredTaxAssetsIntangibleAssets	33860000
CY2019Q4	ntgr	Deferred Tax Assets Intangible Assets DeferredTaxAssetsIntangibleAssets	31708000
CY2020Q4	ntgr	Deferred Tax Assets Deferred Expense Depreciation And Amortization DeferredTaxAssetsDeferredExpenseDepreciationAndAmortization	1651000
CY2019Q4	ntgr	Deferred Tax Assets Deferred Expense Depreciation And Amortization DeferredTaxAssetsDeferredExpenseDepreciationAndAmortization	1639000
CY2020Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	3285000
CY2019Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	1080000
CY2020Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense DeferredTaxAssetsTaxDeferredExpense	76507000
CY2019Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense DeferredTaxAssetsTaxDeferredExpense	71619000
CY2020Q4	ntgr	Deferred Tax Liabilities Right Of Use Asset DeferredTaxLiabilitiesRightOfUseAsset	-4264000
CY2019Q4	ntgr	Deferred Tax Liabilities Right Of Use Asset DeferredTaxLiabilitiesRightOfUseAsset	-5218000
CY2020Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	987000
CY2019Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	1053000
CY2020Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	5251000
CY2019Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	6271000
CY2020Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	2933000
CY2019Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	6418000
CY2020Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	68323000
CY2019Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	58930000
CY2020Q4	ntgr	Valuation Allowance Netof Federal Tax ValuationAllowanceNetofFederalTax	2900000
CY2019Q4	ntgr	Valuation Allowance Netof Federal Tax ValuationAllowanceNetofFederalTax	5200000
CY2020	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210
CY2019	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210
CY2018	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210
CY2020	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.029
CY2019	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.024
CY2018	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.015
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	-0.050
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	-0.008
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	0.019
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Share Based Compensation Cost EffectiveIncomeTaxRateReconciliationNondeductibleExpenseShareBasedCompensationCost	0.054
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Share Based Compensation Cost EffectiveIncomeTaxRateReconciliationNondeductibleExpenseShareBasedCompensationCost	0.107
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Share Based Compensation Cost EffectiveIncomeTaxRateReconciliationNondeductibleExpenseShareBasedCompensationCost	-0.003
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits EffectiveIncomeTaxRateReconciliationTaxCredits	0.023
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits EffectiveIncomeTaxRateReconciliationTaxCredits	0.059
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits EffectiveIncomeTaxRateReconciliationTaxCredits	0.026
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	0.018
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	0.009
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	0.014
CY2020	ntgr	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets State Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsStateValuationAllowance	-0.058
CY2019	ntgr	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets State Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsStateValuationAllowance	0
CY2018	ntgr	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets State Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsStateValuationAllowance	0
CY2020	ntgr	Impact Of2017 Tax Act ImpactOf2017TaxAct	0
CY2019	ntgr	Impact Of2017 Tax Act ImpactOf2017TaxAct	0
CY2018	ntgr	Impact Of2017 Tax Act ImpactOf2017TaxAct	-0.154
CY2020	ntgr	Effective Income Tax Rate Reconciliation Of Base Erosion Anti Abuse Tax EffectiveIncomeTaxRateReconciliationOfBaseErosionAntiAbuseTax	0
CY2019	ntgr	Effective Income Tax Rate Reconciliation Of Base Erosion Anti Abuse Tax EffectiveIncomeTaxRateReconciliationOfBaseErosionAntiAbuseTax	0.072
CY2018	ntgr	Effective Income Tax Rate Reconciliation Of Base Erosion Anti Abuse Tax EffectiveIncomeTaxRateReconciliationOfBaseErosionAntiAbuseTax	0
CY2020	ntgr	Effective Income Tax Rate Reconciliation Discontinued Operation Percent EffectiveIncomeTaxRateReconciliationDiscontinuedOperationPercent	0
CY2019	ntgr	Effective Income Tax Rate Reconciliation Discontinued Operation Percent EffectiveIncomeTaxRateReconciliationDiscontinuedOperationPercent	0
CY2018	ntgr	Effective Income Tax Rate Reconciliation Discontinued Operation Percent EffectiveIncomeTaxRateReconciliationDiscontinuedOperationPercent	0.522
CY2020	ntgr	Effective Income Tax Rate Reconciliation Change In Transaction Costs EffectiveIncomeTaxRateReconciliationChangeInTransactionCosts	0
CY2019	ntgr	Effective Income Tax Rate Reconciliation Change In Transaction Costs EffectiveIncomeTaxRateReconciliationChangeInTransactionCosts	-0.025
CY2018	ntgr	Effective Income Tax Rate Reconciliation Change In Transaction Costs EffectiveIncomeTaxRateReconciliationChangeInTransactionCosts	0
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Prior Year Income Taxes EffectiveIncomeTaxRateReconciliationPriorYearIncomeTaxes	0.003
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Prior Year Income Taxes EffectiveIncomeTaxRateReconciliationPriorYearIncomeTaxes	-0.206
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Prior Year Income Taxes EffectiveIncomeTaxRateReconciliationPriorYearIncomeTaxes	0
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	-0.006
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	0.004
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	0.002
CY2020	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.177
CY2019	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.128
CY2018	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.599
CY2020	us-gaap	Other Comprehensive Income Loss Tax Portion Attributable To Parent1 OtherComprehensiveIncomeLossTaxPortionAttributableToParent1	-8000
CY2019	us-gaap	Other Comprehensive Income Loss Tax Portion Attributable To Parent1 OtherComprehensiveIncomeLossTaxPortionAttributableToParent1	10000
CY2018	us-gaap	Other Comprehensive Income Loss Tax Portion Attributable To Parent1 OtherComprehensiveIncomeLossTaxPortionAttributableToParent1	100000
CY2017	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.35
CY2019	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.21
CY2018	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.21
CY2020	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.21
CY2020Q4	us-gaap	Significant Change In Unrecognized Tax Benefits Is Reasonably Possible Amount Of Unrecorded Benefit SignificantChangeInUnrecognizedTaxBenefitsIsReasonablyPossibleAmountOfUnrecordedBenefit	500000
CY2017Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	12567000
CY2018	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	637000
CY2018	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	280000
CY2018	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	116000
CY2018	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	999000
CY2018	ntgr	Unrecognized Tax Benefits Adjustments Due To Foreign Exchange Rate Movement UnrecognizedTaxBenefitsAdjustmentsDueToForeignExchangeRateMovement	386000
CY2018Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	11983000
CY2019	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	385000
CY2019	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	996000
CY2019	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	705000
CY2019	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	3440000
CY2019	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	609000
CY2019	ntgr	Unrecognized Tax Benefits Adjustments Due To Foreign Exchange Rate Movement UnrecognizedTaxBenefitsAdjustmentsDueToForeignExchangeRateMovement	-459000
CY2019Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	9069000
CY2020	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	442000
CY2020	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	253000
CY2020	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	744000
CY2020	ntgr	Unrecognized Tax Benefits Adjustments Due To Foreign Exchange Rate Movement UnrecognizedTaxBenefitsAdjustmentsDueToForeignExchangeRateMovement	-522000
CY2020Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	9542000
CY2020Q4	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	7800000
CY2020	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Expense UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense	200000
CY2019	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Expense UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense	-1400000
CY2018	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Expense UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense	100000
CY2020Q4	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Accrued UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued	2300000
CY2019Q4	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Accrued UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued	2000000.0
CY2020Q4	us-gaap	Undistributed Earnings Of Foreign Subsidiaries UndistributedEarningsOfForeignSubsidiaries	6100000
CY2020Q4	us-gaap	Deferred Tax Liability Not Recognized Amount Of Unrecognized Deferred Tax Liability Undistributed Earnings Of Domestic Subsidiaries DeferredTaxLiabilityNotRecognizedAmountOfUnrecognizedDeferredTaxLiabilityUndistributedEarningsOfDomesticSubsidiaries	1300000
CY2020	ntgr	Number Of Days For Non Cancellation Of Purchase Obligations Prior To Expected Shipment Date NumberOfDaysForNonCancellationOfPurchaseObligationsPriorToExpectedShipmentDate	P30D
CY2020Q4	us-gaap	Purchase Commitment Remaining Minimum Amount Committed PurchaseCommitmentRemainingMinimumAmountCommitted	126100000
CY2019Q4	us-gaap	Product Warranty Accrual ProductWarrantyAccrual	10556000
CY2018Q4	us-gaap	Product Warranty Accrual ProductWarrantyAccrual	14412000
CY2017Q4	us-gaap	Product Warranty Accrual ProductWarrantyAccrual	44068000
CY2020	ntgr	Standardand Extended Product Warranty Accrual Decreasefor Reclassifications StandardandExtendedProductWarrantyAccrualDecreaseforReclassifications	0
CY2019	ntgr	Standardand Extended Product Warranty Accrual Decreasefor Reclassifications StandardandExtendedProductWarrantyAccrualDecreaseforReclassifications	0
CY2018	ntgr	Standardand Extended Product Warranty Accrual Decreasefor Reclassifications StandardandExtendedProductWarrantyAccrualDecreaseforReclassifications	29147000
CY2020	us-gaap	Product Warranty Accrual Warranties Issued ProductWarrantyAccrualWarrantiesIssued	7330000
CY2019	us-gaap	Product Warranty Accrual Warranties Issued ProductWarrantyAccrualWarrantiesIssued	7050000
CY2018	us-gaap	Product Warranty Accrual Warranties Issued ProductWarrantyAccrualWarrantiesIssued	12783000
CY2020	us-gaap	Product Warranty Accrual Payments ProductWarrantyAccrualPayments	8646000
CY2019	us-gaap	Product Warranty Accrual Payments ProductWarrantyAccrualPayments	10906000
CY2018	us-gaap	Product Warranty Accrual Payments ProductWarrantyAccrualPayments	13292000
CY2020Q4	us-gaap	Product Warranty Accrual ProductWarrantyAccrual	9240000
CY2019Q4	us-gaap	Product Warranty Accrual ProductWarrantyAccrual	10556000
CY2018Q4	us-gaap	Product Warranty Accrual ProductWarrantyAccrual	14412000
CY2020Q4	ntgr	Liability For Director And Officer Indemnification Agreements LiabilityForDirectorAndOfficerIndemnificationAgreements	0
CY2020Q4	ntgr	Liability For Customers Distributors And Resellers Indemnification Agreements LiabilityForCustomersDistributorsAndResellersIndemnificationAgreements	0
CY2020	ntgr	Change In Control And Severance Agreements Termination Benefit Available Term Description ChangeInControlAndSeveranceAgreementsTerminationBenefitAvailableTermDescription	one month prior to or 12 months following a change in control
CY2020	ntgr	Percentage Of Excise Tax Rate PercentageOfExciseTaxRate	0.20
CY2020Q4	ntgr	Liabilities For Executives Employment Agreements LiabilitiesForExecutivesEmploymentAgreements	0
CY2020Q4	ntgr	Number Of Existing Cases And Proceedings That Company Currently Believes Are Liking To Have Material Adverse Effect On Its Financial Position NumberOfExistingCasesAndProceedingsThatCompanyCurrentlyBelievesAreLikingToHaveMaterialAdverseEffectOnItsFinancialPosition	0
CY2020	ntgr	Future Length Company Currently Considered Regarding Existing Cases And Proceedings That Are Likely To Have Material Adverse Effect On It In Months FutureLengthCompanyCurrentlyConsideredRegardingExistingCasesAndProceedingsThatAreLikelyToHaveMaterialAdverseEffectOnItInMonths	P12M
CY2019Q1	ntgr	Number Of Class Action Lawsuits NumberOfClassActionLawsuits	6
CY2020Q4	us-gaap	Stock Repurchase Program Remaining Number Of Shares Authorized To Be Repurchased StockRepurchaseProgramRemainingNumberOfSharesAuthorizedToBeRepurchased	2600000
CY2020	us-gaap	Stock Repurchased And Retired During Period Shares StockRepurchasedAndRetiredDuringPeriodShares	900000
CY2020	us-gaap	Stock Repurchased And Retired During Period Value StockRepurchasedAndRetiredDuringPeriodValue	23800000
CY2019	us-gaap	Stock Repurchased And Retired During Period Shares StockRepurchasedAndRetiredDuringPeriodShares	2400000
CY2019	us-gaap	Stock Repurchased And Retired During Period Value StockRepurchasedAndRetiredDuringPeriodValue	75900000
CY2018	us-gaap	Stock Repurchased And Retired During Period Shares StockRepurchasedAndRetiredDuringPeriodShares	500000
CY2018	us-gaap	Stock Repurchased And Retired During Period Value StockRepurchasedAndRetiredDuringPeriodValue	30000000.0
CY2020	us-gaap	Shares Paid For Tax Withholding For Share Based Compensation SharesPaidForTaxWithholdingForShareBasedCompensation	198000
CY2020	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	5100000
CY2019	us-gaap	Shares Paid For Tax Withholding For Share Based Compensation SharesPaidForTaxWithholdingForShareBasedCompensation	198000
CY2019	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	6500000
CY2018	us-gaap	Shares Paid For Tax Withholding For Share Based Compensation SharesPaidForTaxWithholdingForShareBasedCompensation	138000
CY2018	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	8100000
CY2017Q4	us-gaap	Aoci Tax Attributable To Parent AociTaxAttributableToParent	-133000
CY2018	us-gaap	Other Comprehensive Income Loss Before Reclassifications Tax OtherComprehensiveIncomeLossBeforeReclassificationsTax	249000
CY2018	us-gaap	Oci Before Reclassifications Net Of Tax Attributable To Parent OciBeforeReclassificationsNetOfTaxAttributableToParent	1301000
CY2018	us-gaap	Reclassification From Aoci Current Period Tax ReclassificationFromAociCurrentPeriodTax	123000
CY2018	us-gaap	Reclassification From Aoci Current Period Net Of Tax Attributable To Parent ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent	465000
CY2018	us-gaap	Other Comprehensive Income Loss Tax Portion Attributable To Parent1 OtherComprehensiveIncomeLossTaxPortionAttributableToParent1	126000
CY2018	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	836000
CY2018	ntgr	Aoci Decrease From Distributions To Noncontrolling Interest Holders Tax AOCIDecreaseFromDistributionsToNoncontrollingInterestHoldersTax	-4000
CY2018	ntgr	Aoci Decrease From Distributions To Noncontrolling Interest Holders Net Of Tax AOCIDecreaseFromDistributionsToNoncontrollingInterestHoldersNetOfTax	0
CY2018Q4	us-gaap	Aoci Tax Attributable To Parent AociTaxAttributableToParent	-11000
CY2019	us-gaap	Other Comprehensive Income Loss Before Reclassifications Tax OtherComprehensiveIncomeLossBeforeReclassificationsTax	332000
CY2019	us-gaap	Oci Before Reclassifications Net Of Tax Attributable To Parent OciBeforeReclassificationsNetOfTaxAttributableToParent	1249000
CY2019	us-gaap	Reclassification From Aoci Current Period Tax ReclassificationFromAociCurrentPeriodTax	322000
CY2019	us-gaap	Reclassification From Aoci Current Period Net Of Tax Attributable To Parent ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent	1213000
CY2019	us-gaap	Other Comprehensive Income Loss Tax Portion Attributable To Parent1 OtherComprehensiveIncomeLossTaxPortionAttributableToParent1	10000
CY2019	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	36000
CY2019Q4	us-gaap	Aoci Tax Attributable To Parent AociTaxAttributableToParent	-1000
CY2020	us-gaap	Other Comprehensive Income Loss Before Reclassifications Tax OtherComprehensiveIncomeLossBeforeReclassificationsTax	-174000
CY2020	us-gaap	Oci Before Reclassifications Net Of Tax Attributable To Parent OciBeforeReclassificationsNetOfTaxAttributableToParent	-682000
CY2020	us-gaap	Reclassification From Aoci Current Period Tax ReclassificationFromAociCurrentPeriodTax	-166000
CY2020	us-gaap	Reclassification From Aoci Current Period Net Of Tax Attributable To Parent ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent	-626000
CY2020	us-gaap	Other Comprehensive Income Loss Tax Portion Attributable To Parent1 OtherComprehensiveIncomeLossTaxPortionAttributableToParent1	-8000
CY2020	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-56000
CY2020Q4	us-gaap	Aoci Tax Attributable To Parent AociTaxAttributableToParent	-9000
CY2020	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	30505000
CY2019	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	29137000
CY2018	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	26461000
CY2020	us-gaap	Employee Service Share Based Compensation Allocation Of Recognized Period Costs Capitalized Amount EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount	800000
CY2019	us-gaap	Employee Service Share Based Compensation Allocation Of Recognized Period Costs Capitalized Amount EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount	800000
CY2018	us-gaap	Employee Service Share Based Compensation Allocation Of Recognized Period Costs Capitalized Amount EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount	800000
CY2020	us-gaap	Number Of Operating Segments NumberOfOperatingSegments	2
CY2020	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	2
CY2020	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	1255202000
CY2019	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	998763000
CY2018	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	1058816000
CY2020	ntgr	Segment Contribution Income SegmentContributionIncome	194686000
CY2019	ntgr	Segment Contribution Income SegmentContributionIncome	135057000
CY2018	ntgr	Segment Contribution Income SegmentContributionIncome	166482000
CY2020	ntgr	Corporate And Unallocated Income CorporateAndUnallocatedIncome	77645000
CY2019	ntgr	Corporate And Unallocated Income CorporateAndUnallocatedIncome	70301000
CY2018	ntgr	Corporate And Unallocated Income CorporateAndUnallocatedIncome	89325000
CY2020	ntgr	Amortization Of Intangible Asset AmortizationOfIntangibleAsset	5952000
CY2019	ntgr	Amortization Of Intangible Asset AmortizationOfIntangibleAsset	6731000
CY2018	ntgr	Amortization Of Intangible Asset AmortizationOfIntangibleAsset	7979000
CY2020	us-gaap	Share Based Compensation ShareBasedCompensation	30505000
CY2019	us-gaap	Share Based Compensation ShareBasedCompensation	29137000
CY2018	us-gaap	Share Based Compensation ShareBasedCompensation	26461000
CY2020	us-gaap	Professional Fees ProfessionalFees	0
CY2019	us-gaap	Professional Fees ProfessionalFees	264000
CY2018	us-gaap	Professional Fees ProfessionalFees	929000
CY2020	us-gaap	Business Combination Contingent Consideration Arrangements Change In Amount Of Contingent Consideration Liability1 BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1	-2928000
CY2019	us-gaap	Business Combination Contingent Consideration Arrangements Change In Amount Of Contingent Consideration Liability1 BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1	-25000
CY2018	us-gaap	Business Combination Contingent Consideration Arrangements Change In Amount Of Contingent Consideration Liability1 BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1	0
CY2020	ntgr	Restructuring And Other Charges RestructuringAndOtherCharges	1702000
CY2019	ntgr	Restructuring And Other Charges RestructuringAndOtherCharges	2077000
CY2018	ntgr	Restructuring And Other Charges RestructuringAndOtherCharges	2198000
CY2020	us-gaap	Gain Loss On Investments GainLossOnInvestments	-6222000
CY2019	us-gaap	Gain Loss On Investments GainLossOnInvestments	-224000
CY2018	us-gaap	Gain Loss On Investments GainLossOnInvestments	-861000
CY2020	us-gaap	Gain Loss Related To Litigation Settlement GainLossRelatedToLitigationSettlement	-44000
CY2018	us-gaap	Gain Loss Related To Litigation Settlement GainLossRelatedToLitigationSettlement	-15000
CY2020	us-gaap	Investment Income Interest InvestmentIncomeInterest	436000
CY2019	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	998763000
CY2019	us-gaap	Gain Loss Related To Litigation Settlement GainLossRelatedToLitigationSettlement	-160000
CY2019	us-gaap	Investment Income Interest InvestmentIncomeInterest	2539000
CY2018	us-gaap	Investment Income Interest InvestmentIncomeInterest	3980000
CY2020	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-5177000
CY2019	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	844000
CY2018	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	510000
CY2020	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	70803000
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	29571000
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	43204000
CY2020	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	1255202000
CY2018	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	1058816000
CY2020Q4	us-gaap	Noncurrent Assets NoncurrentAssets	45491000
CY2019Q4	us-gaap	Noncurrent Assets NoncurrentAssets	46600000
CY2020Q4	us-gaap	Assets Fair Value Disclosure AssetsFairValueDisclosure	165237000
CY2020Q4	us-gaap	Liabilities Fair Value Disclosure LiabilitiesFairValueDisclosure	5382000
CY2019Q4	us-gaap	Assets Fair Value Disclosure AssetsFairValueDisclosure	27755000
CY2019Q4	us-gaap	Liabilities Fair Value Disclosure LiabilitiesFairValueDisclosure	6453000
CY2020	ntgr	Non Cancelable Leases Expiration Date NonCancelableLeasesExpirationDate	December 2026
CY2020	us-gaap	Operating Lease Cost OperatingLeaseCost	10482000
CY2019	us-gaap	Operating Lease Cost OperatingLeaseCost	11945000
CY2020	us-gaap	Short Term Lease Cost ShortTermLeaseCost	1702000
CY2019	us-gaap	Short Term Lease Cost ShortTermLeaseCost	1111000
CY2020	us-gaap	Lease Cost LeaseCost	12184000
CY2019	us-gaap	Lease Cost LeaseCost	13056000
CY2018	us-gaap	Lease And Rental Expense LeaseAndRentalExpense	9400000
CY2020	us-gaap	Operating Lease Payments OperatingLeasePayments	12127000
CY2019	us-gaap	Operating Lease Payments OperatingLeasePayments	11652000
CY2020	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	9463000
CY2019	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	918000
CY2020Q1	us-gaap	Profit Loss ProfitLoss	-4173000
CY2020Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.02
CY2020Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.85
CY2020Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.20
CY2020Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.14
CY2020Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.99
CY2020Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.040
CY2019Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.037
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	10209000
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	9488000
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	6764000
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	6105000
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Five LesseeOperatingLeaseLiabilityPaymentsDueYearFive	4430000
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due After Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive	796000
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	37792000
CY2020Q4	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	3131000
CY2020Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	34661000
CY2020Q4	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	367073000
CY2020Q3	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	378114000
CY2020Q2	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	280052000
CY2020Q1	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	229963000
CY2020Q4	us-gaap	Gross Profit GrossProfit	111116000
CY2020Q3	us-gaap	Gross Profit GrossProfit	113494000
CY2020Q2	us-gaap	Gross Profit GrossProfit	81301000
CY2020Q1	us-gaap	Gross Profit GrossProfit	66241000
CY2020Q4	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	2531000
CY2020Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	6214000
CY2020Q2	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	3247000
CY2020Q1	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	518000
CY2020Q4	us-gaap	Profit Loss ProfitLoss	30948000
CY2020Q3	us-gaap	Profit Loss ProfitLoss	25535000
CY2020Q2	us-gaap	Profit Loss ProfitLoss	5983000
CY2019Q4	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	252971000
CY2020Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.14
CY2020Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.83
CY2020Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.20
CY2019Q3	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	265858000
CY2019Q2	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	230852000
CY2019Q1	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	249082000
CY2019Q4	us-gaap	Gross Profit GrossProfit	69583000
CY2019Q3	us-gaap	Gross Profit GrossProfit	77192000
CY2019Q2	us-gaap	Gross Profit GrossProfit	65445000
CY2019Q1	us-gaap	Gross Profit GrossProfit	82008000
CY2019Q4	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	1045000
CY2019Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-228000
CY2019Q2	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	756000
CY2019Q1	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	2207000
CY2019Q4	us-gaap	Profit Loss ProfitLoss	-420000
CY2019Q3	us-gaap	Profit Loss ProfitLoss	12529000
CY2019Q2	us-gaap	Profit Loss ProfitLoss	839000
CY2019Q1	us-gaap	Profit Loss ProfitLoss	12843000
CY2019Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.01
CY2019Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.41
CY2019Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.03
CY2019Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.41
CY2019Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.01
CY2019Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.39
CY2019Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.03
CY2019Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.39

Files In Submission

Name	View Source	Status
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0001564590-21-006094.txt	Edgar Link	pending
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$NTGR
NETGEAR, INC. Stock $ntgr

2020 Q4 Form 10-K Financial Statement

#000156459021006094 Filed on February 16, 2021

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$NTGR NETGEAR, INC. Stock $ntgr

2020 Q4 Form 10-K Financial Statement

#000156459021006094 Filed on February 16, 2021

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$NTGR
NETGEAR, INC. Stock $ntgr