$NTGR
NETGEAR, INC. Stock $ntgr

$ntgr Overview Financials Valuation SEC Filings Company Website

2019 Q4 Form 10-Q Financial Statement

#000112290419000245 Filed on November 01, 2019

Income Statement

Concept	2019 Q4	2019 Q3	2018 Q3
Revenue	$253.0M	$265.9M	$400.6M
YoY Change	-12.44%	-33.63%	21.12%
Cost Of Revenue	$183.4M	$188.7M	$175.0M
YoY Change	-7.51%	7.83%	-26.73%
Gross Profit	$69.58M	$77.19M	$80.28M
YoY Change	-23.24%	-3.85%	6.5%
Gross Profit Margin	27.51%	29.04%	20.04%
Selling, General & Admin	$48.20M	$45.38M	$54.08M
YoY Change	-8.54%	-16.08%	9.44%
% of Gross Profit	69.27%	58.79%	67.36%
Research & Development	$20.80M	$19.54M	$20.14M
YoY Change	8.9%	-2.97%	-13.79%
% of Gross Profit	29.89%	25.31%	25.08%
Depreciation & Amortization	$4.800M	$3.000M	$2.500M
YoY Change	4.35%	20.0%	-19.35%
% of Gross Profit	6.9%	3.89%	3.11%
Operating Expenses	$69.80M	$65.13M	$74.59M
YoY Change	-28.26%	-12.69%	2.4%
Operating Profit	-$217.0K	$12.07M	$19.85M
YoY Change	-96.73%	-39.23%	3.98%
Interest Expense	-$700.0K	$2.200M	$4.900M
YoY Change	-133.33%	-55.1%	-345.0%
% of Operating Profit		18.23%	24.68%
Other Income/Expense, Net	$1.600M	-$403.0K	$955.0K
YoY Change	-277.78%	-142.2%	149.35%
Pretax Income	$600.0K	$12.30M	$21.79M
YoY Change	-96.79%	-43.56%	9.19%
Income Tax	$1.045M	-$228.0K	$1.271M
% Of Pretax Income	174.17%	-1.85%	5.83%
Net Earnings	-$420.0K	$12.53M	$9.949M
YoY Change	-97.84%	25.93%	-31.77%
Net Earnings / Revenue	-0.17%	4.71%	2.48%
Basic Earnings Per Share	-$0.01	$0.41	-$0.17
Diluted Earnings Per Share	-$0.01	$0.39	-$0.16
COMMON SHARES
Basic Shares Outstanding	30.15M shares	30.93M	31.80M shares
Diluted Shares Outstanding		31.82M	32.97M shares

Balance Sheet

Concept	2019 Q4	2019 Q3	2018 Q3
SHORT-TERM ASSETS
Cash & Short-Term Investments	$195.7M	$171.9M	$355.6M
YoY Change	-28.68%	-51.66%	16.4%
Cash & Equivalents	$190.2M	$168.0M	$393.6M
Short-Term Investments	$5.500M	$3.900M	$128.2M
Other Short-Term Assets	$35.80M	$31.20M	$44.90M
YoY Change	-0.56%	-30.51%	62.09%
Inventory	$235.5M	$275.6M	$330.5M
Prepaid Expenses
Receivables	$277.2M	$248.1M	$359.0M
Other Receivables	$0.00	$0.00	$0.00
Total Short-Term Assets	$744.1M	$726.7M	$1.258B
YoY Change	-13.26%	-42.25%	39.57%
LONG-TERM ASSETS
Property, Plant & Equipment	$17.68M	$19.67M	$56.65M
YoY Change	-12.36%	-65.27%	200.85%
Goodwill	$80.72M	$80.72M	$102.0M
YoY Change	0.0%	-20.83%	19.31%
Intangibles	$10.10M	$11.70M	$22.34M
YoY Change	-41.07%	-47.63%	-26.06%
Long-Term Investments	$8.100M	$8.100M
YoY Change
Other Assets	$74.28M	$72.64M	$94.05M
YoY Change	10.15%	-22.77%	18.31%
Total Long-Term Assets	$211.7M	$216.3M	$275.0M
YoY Change	14.14%	-21.33%	28.5%
TOTAL ASSETS
Total Short-Term Assets	$744.1M	$726.7M	$1.258B
Total Long-Term Assets	$211.7M	$216.3M	$275.0M
Total Assets	$955.8M	$943.1M	$1.533B
YoY Change	-8.39%	-38.5%	37.45%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$80.53M	$83.91M	$168.2M
YoY Change	-42.37%	-50.1%	130.71%
Accrued Expenses	$189.5M	$163.3M	$282.4M
YoY Change	-4.98%	-42.16%	62.57%
Deferred Revenue	$6.450M	$5.812M	$35.49M
YoY Change	-41.82%	-83.62%
Short-Term Debt	$0.00	$0.00	$0.00
YoY Change
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities	$298.4M	$272.5M	$524.1M
YoY Change	-22.29%	-48.01%	70.62%
LONG-TERM LIABILITIES
Long-Term Debt	$0.00	$0.00	$0.00
YoY Change
Other Long-Term Liabilities	$7.988M	$8.052M	$53.50M
YoY Change	-34.7%	-84.95%	218.52%
Total Long-Term Liabilities	$7.988M	$8.052M	$53.50M
YoY Change	-34.7%	-84.95%	218.52%
TOTAL LIABILITIES
Total Short-Term Liabilities	$298.4M	$272.5M	$524.1M
Total Long-Term Liabilities	$7.988M	$8.052M	$53.50M
Total Liabilities	$347.1M	$320.9M	$598.8M
YoY Change	-16.52%	-46.41%	76.3%
SHAREHOLDERS EQUITY
Retained Earnings	-$222.7M	-$199.8M	$124.5M
YoY Change	34.13%	-260.53%	-36.68%
Common Stock	$30.00K	$31.00K	$32.00K
YoY Change	-6.25%	-3.13%	0.0%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$608.7M	$622.1M	$910.2M
YoY Change
Total Liabilities & Shareholders Equity	$955.8M	$943.1M	$1.533B
YoY Change	-8.39%	-38.5%	37.45%

Cashflow Statement

Concept	2019 Q4	2019 Q3	2018 Q3
OPERATING ACTIVITIES
Net Income	-$420.0K	$12.53M	$9.949M
YoY Change	-97.84%	25.93%	-31.77%
Depreciation, Depletion And Amortization	$4.800M	$3.000M	$2.500M
YoY Change	4.35%	20.0%	-19.35%
Cash From Operating Activities	$49.50M	-$26.10M	-$16.90M
YoY Change	-127.95%	54.44%	186.44%
INVESTING ACTIVITIES
Capital Expenditures	-$2.400M	-$2.400M	-$3.000M
YoY Change	-27.27%	-20.0%	7.14%
Acquisitions
YoY Change
Other Investing Activities	-$1.300M	-$300.0K	-$7.400M
YoY Change	-181.25%	-95.95%	-168.52%
Cash From Investing Activities	-$3.700M	-$2.700M	-$10.60M
YoY Change	117.65%	-74.53%	-230.86%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	-23.60M	-17.80M	-4.000M
YoY Change	71.01%	345.0%	-91.51%
NET CHANGE
Cash From Operating Activities	49.50M	-26.10M	-16.90M
Cash From Investing Activities	-3.700M	-2.700M	-10.60M
Cash From Financing Activities	-23.60M	-17.80M	-4.000M
Net Change In Cash	22.20M	-46.60M	-31.50M
YoY Change	-111.53%	47.94%	-29.84%
FREE CASH FLOW
Cash From Operating Activities	$49.50M	-$26.10M	-$16.90M
Capital Expenditures	-$2.400M	-$2.400M	-$3.000M
Free Cash Flow	$51.90M	-$23.70M	-$13.90M
YoY Change	-129.86%	70.5%	348.39%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
	dei	Amendment Flag AmendmentFlag	false
	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	Q3
	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2019
	dei	Entity Central Index Key EntityCentralIndexKey	0001122904
CY2018Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	1254000	USD
CY2019Q3	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	1079000	USD
CY2019Q3	us-gaap	Revenue Remaining Performance Obligation Expected Timing Of Satisfaction Period1 RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1	P1Y
CY2019Q3	us-gaap	Revenue Remaining Performance Obligation Expected Timing Of Satisfaction Period1 RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1	P1Y
CY2019Q3	us-gaap	Revenue Remaining Performance Obligation Expected Timing Of Satisfaction Period1 RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1
	dei	Document Type DocumentType	10-Q
	dei	Document Quarterly Report DocumentQuarterlyReport	true
	dei	Document Period End Date DocumentPeriodEndDate	2019-09-29
	dei	Document Transition Report DocumentTransitionReport	false
	dei	Entity File Number EntityFileNumber	000-50350
	dei	Entity Registrant Name EntityRegistrantName	NETGEAR, Inc.
	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	DE
	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	77-0419172
	dei	Entity Address Address Line1 EntityAddressAddressLine1	350 East Plumeria Drive,
	dei	Entity Address City Or Town EntityAddressCityOrTown	San Jose,
	dei	Entity Address State Or Province EntityAddressStateOrProvince	CA
	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	95134
	dei	City Area Code CityAreaCode	(408)
	dei	Local Phone Number LocalPhoneNumber	907-8000
	dei	Security12b Title Security12bTitle	Common Stock, $0.001 par value
	dei	Trading Symbol TradingSymbol	NTGR
	dei	Security Exchange Name SecurityExchangeName	NASDAQ
	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
	dei	Entity Small Business EntitySmallBusiness	false
	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
	dei	Entity Shell Company EntityShellCompany	false
CY2019Q4	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	30147504	shares
CY2019Q3	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	168002000	USD
CY2018Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	201047000	USD
CY2019Q3	us-gaap	Short Term Investments ShortTermInvestments	3915000	USD
CY2018Q4	us-gaap	Short Term Investments ShortTermInvestments	73317000	USD
CY2019Q3	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	248070000	USD
CY2018Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	303667000	USD
CY2019Q3	us-gaap	Inventory Net InventoryNet	275584000	USD
CY2018Q4	us-gaap	Inventory Net InventoryNet	243871000	USD
CY2019Q3	us-gaap	Prepaid Expense And Other Assets Current PrepaidExpenseAndOtherAssetsCurrent	31153000	USD
CY2018Q4	us-gaap	Prepaid Expense And Other Assets Current PrepaidExpenseAndOtherAssetsCurrent	35997000	USD
CY2019Q3	us-gaap	Assets Current AssetsCurrent	726724000	USD
CY2018Q4	us-gaap	Assets Current AssetsCurrent	857899000	USD
CY2019Q3	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	19671000	USD
CY2018Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	20177000	USD
CY2019Q3	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	31610000	USD
CY2018Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	0	USD
CY2019Q3	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	11699000	USD
CY2019Q3	us-gaap	Accounts Payable Current AccountsPayableCurrent	83912000	USD
CY2018Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	139748000	USD
CY2019Q3	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	18103000	USD
CY2018Q4	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	31666000	USD
CY2018Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	17146000	USD
CY2019Q3	us-gaap	Goodwill Goodwill	80721000	USD
CY2018Q4	us-gaap	Goodwill Goodwill	80721000	USD
CY2019Q3	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	72636000	USD
CY2018Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	67433000	USD
CY2019Q3	us-gaap	Assets Assets	943061000	USD
CY2018Q4	us-gaap	Assets Assets	1043376000	USD
CY2019Q3	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	163333000	USD
CY2018Q4	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	199472000	USD
CY2019Q3	us-gaap	Contract With Customer Liability Current ContractWithCustomerLiabilityCurrent	5812000	USD
CY2018Q4	us-gaap	Contract With Customer Liability Current ContractWithCustomerLiabilityCurrent	11086000	USD
CY2019Q3	us-gaap	Accrued Income Taxes Current AccruedIncomeTaxesCurrent	1314000	USD
CY2018Q4	us-gaap	Accrued Income Taxes Current AccruedIncomeTaxesCurrent	2020000	USD
CY2019Q3	us-gaap	Liabilities Current LiabilitiesCurrent	272474000	USD
CY2018Q4	us-gaap	Liabilities Current LiabilitiesCurrent	383992000	USD
CY2019Q3	us-gaap	Accrued Income Taxes Noncurrent AccruedIncomeTaxesNoncurrent	13219000	USD
CY2018Q4	us-gaap	Accrued Income Taxes Noncurrent AccruedIncomeTaxesNoncurrent	19600000	USD
CY2019Q3	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	27178000	USD
CY2019Q3	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	8052000	USD
CY2018Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	12232000	USD
CY2019Q3	us-gaap	Liabilities Liabilities	320923000	USD
CY2018Q4	us-gaap	Liabilities Liabilities	415824000	USD
CY2019Q3	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2018Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2019Q3	us-gaap	Common Stock Value CommonStockValue	31000	USD
CY2018Q4	us-gaap	Common Stock Value CommonStockValue	32000	USD
CY2019Q3	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	821966000	USD
CY2018Q4	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	793585000	USD
CY2019Q3	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-18000	USD
CY2018Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-15000	USD
CY2019Q3	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	-199841000	USD
CY2018Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	-166050000	USD
CY2019Q3	us-gaap	Stockholders Equity StockholdersEquity	622138000	USD
CY2018Q4	us-gaap	Stockholders Equity StockholdersEquity	627552000	USD
CY2019Q3	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	943061000	USD
CY2018Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	1043376000	USD
CY2019Q3	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	265858000	USD
CY2018Q3	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	269411000	USD
	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	745792000	USD
	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	769888000	USD
CY2019Q3	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	188666000	USD
CY2018Q3	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	174966000	USD
	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	521147000	USD
	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	518844000	USD
CY2019Q3	us-gaap	Gross Profit GrossProfit	77192000	USD
CY2018Q3	us-gaap	Gross Profit GrossProfit	94445000	USD
	us-gaap	Gross Profit GrossProfit	224645000	USD
	us-gaap	Gross Profit GrossProfit	251044000	USD
CY2019Q3	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	19537000	USD
CY2018Q3	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	20136000	USD
	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	57183000	USD
	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	63273000	USD
CY2019Q3	us-gaap	Selling And Marketing Expense SellingAndMarketingExpense	33491000	USD
CY2018Q3	us-gaap	Selling And Marketing Expense SellingAndMarketingExpense	37892000	USD
	us-gaap	Selling And Marketing Expense SellingAndMarketingExpense	103887000	USD
	us-gaap	Selling And Marketing Expense SellingAndMarketingExpense	114318000	USD
CY2019Q3	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	11887000	USD
CY2018Q3	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	16184000	USD
	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	35467000	USD
	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	50403000	USD
CY2019Q3	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	212000	USD
CY2018Q3	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	380000	USD
	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	1709000	USD
	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	1752000	USD
CY2019Q3	us-gaap	Operating Expenses OperatingExpenses	65127000	USD
CY2018Q3	us-gaap	Operating Expenses OperatingExpenses	74592000	USD
	us-gaap	Operating Expenses OperatingExpenses	198246000	USD
	us-gaap	Operating Expenses OperatingExpenses	229746000	USD
CY2019Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	12065000	USD
CY2018Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	19853000	USD
	us-gaap	Operating Income Loss OperatingIncomeLoss	26399000	USD
	us-gaap	Operating Income Loss OperatingIncomeLoss	21298000	USD
CY2019Q3	us-gaap	Investment Income Interest InvestmentIncomeInterest	639000	USD
CY2018Q3	us-gaap	Investment Income Interest InvestmentIncomeInterest	985000	USD
	us-gaap	Investment Income Interest InvestmentIncomeInterest	2122000	USD
	us-gaap	Investment Income Interest InvestmentIncomeInterest	2806000	USD
CY2019Q3	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-403000	USD
CY2019Q3	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	12529000	USD
CY2018Q3	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	16310000	USD
	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	26211000	USD
	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	17861000	USD
CY2018Q3	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	955000	USD
	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	425000	USD
	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	425000	USD
CY2019Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	12301000	USD
CY2018Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	21793000	USD
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	28946000	USD
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	24529000	USD
CY2019Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-228000	USD
CY2018Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	5483000	USD
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	2735000	USD
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	6668000	USD
CY2019Q3	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	0	USD
CY2018Q3	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	-7160000	USD
	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	0	USD
	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	-8351000	USD
CY2019Q3	us-gaap	Profit Loss ProfitLoss	12529000	USD
CY2018Q3	us-gaap	Profit Loss ProfitLoss	9150000	USD
	us-gaap	Profit Loss ProfitLoss	26211000	USD
	us-gaap	Profit Loss ProfitLoss	9510000	USD
CY2019Q3	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	0	USD
CY2018Q3	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	-799000	USD
	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	0	USD
	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	-799000	USD
CY2019Q3	us-gaap	Net Income Loss NetIncomeLoss	12529000	USD
CY2018Q3	us-gaap	Net Income Loss NetIncomeLoss	9949000	USD
	us-gaap	Net Income Loss NetIncomeLoss	26211000	USD
	us-gaap	Net Income Loss NetIncomeLoss	10309000	USD
CY2019Q3	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	0.41
CY2018Q3	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	0.51
	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	0.84
	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	0.56
CY2019Q3	us-gaap	Discontinued Operation Income Loss From Discontinued Operation Net Of Tax Per Basic Share DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerBasicShare	0
CY2018Q3	us-gaap	Discontinued Operation Income Loss From Discontinued Operation Net Of Tax Per Basic Share DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerBasicShare	-0.20
	us-gaap	Discontinued Operation Income Loss From Discontinued Operation Net Of Tax Per Basic Share DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerBasicShare	0
	us-gaap	Discontinued Operation Income Loss From Discontinued Operation Net Of Tax Per Basic Share DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerBasicShare	-0.23
CY2019Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.41
CY2018Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.31
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.84
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.33
CY2019Q3	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	0.39
CY2018Q3	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	0.49
	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	0.81
	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	0.54
CY2019Q3	us-gaap	Discontinued Operation Income Loss From Discontinued Operation Net Of Tax Per Diluted Share DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerDilutedShare	0
CY2018Q3	us-gaap	Discontinued Operation Income Loss From Discontinued Operation Net Of Tax Per Diluted Share DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerDilutedShare	-0.19
	us-gaap	Discontinued Operation Income Loss From Discontinued Operation Net Of Tax Per Diluted Share DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerDilutedShare	0
	us-gaap	Discontinued Operation Income Loss From Discontinued Operation Net Of Tax Per Diluted Share DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerDilutedShare	-0.23
CY2019Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.39
CY2018Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.30
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.81
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.31
CY2019Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	30933000	shares
CY2018Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	31802000	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	31221000	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	31634000	shares
CY2019Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	31819000	shares
CY2018Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	32974000	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	32327000	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	32826000	shares
CY2019Q3	us-gaap	Profit Loss ProfitLoss	12529000	USD
CY2018Q3	us-gaap	Profit Loss ProfitLoss	9150000	USD
	us-gaap	Profit Loss ProfitLoss	26211000	USD
	us-gaap	Profit Loss ProfitLoss	9510000	USD
CY2019Q3	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification Before Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationBeforeTax	-37000	USD
CY2018Q3	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification Before Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationBeforeTax	48000	USD
	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification Before Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationBeforeTax	-16000	USD
	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification Before Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationBeforeTax	864000	USD
CY2019Q3	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Before Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeTax	0	USD
CY2018Q3	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Before Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeTax	41000	USD
	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Before Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeTax	16000	USD
	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Before Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeTax	72000	USD
CY2019Q3	us-gaap	Other Comprehensive Income Loss Before Tax OtherComprehensiveIncomeLossBeforeTax	-37000	USD
CY2018Q3	us-gaap	Other Comprehensive Income Loss Before Tax OtherComprehensiveIncomeLossBeforeTax	89000	USD
	us-gaap	Other Comprehensive Income Loss Before Tax OtherComprehensiveIncomeLossBeforeTax	0	USD
	us-gaap	Other Comprehensive Income Loss Before Tax OtherComprehensiveIncomeLossBeforeTax	936000	USD
CY2019Q3	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationTax	-7000	USD
CY2018Q3	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationTax	8000	USD
	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationTax	-1000	USD
	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationTax	84000	USD
CY2019Q3	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax	0	USD
CY2018Q3	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax	10000	USD
	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax	4000	USD
	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	815000	USD
CY2019Q3	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	12499000	USD
CY2018Q3	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	9221000	USD
	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	26208000	USD
	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	10325000	USD
CY2019Q3	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	0	USD
CY2018Q3	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	-797000	USD
	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	0	USD
	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	-797000	USD
CY2019Q3	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	12499000	USD
	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax	37000	USD
CY2019Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-30000	USD
CY2018Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	71000	USD
	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-3000	USD
CY2018Q3	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	10018000	USD
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	26208000	USD
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	11122000	USD
CY2018Q4	us-gaap	Stockholders Equity StockholdersEquity	627552000	USD
CY2019Q1	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	12000	USD
CY2019Q1	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax	17000	USD
CY2019Q1	us-gaap	Net Income Loss NetIncomeLoss	12843000	USD
CY2019Q1	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	6457000	USD
CY2019Q1	us-gaap	Stock Repurchased And Retired During Period Value StockRepurchasedAndRetiredDuringPeriodValue	15000000	USD
CY2019Q1	us-gaap	Adjustments Related To Tax Withholding For Share Based Compensation AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation	3344000	USD
CY2019Q1	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	4371000	USD
CY2019Q1	us-gaap	Stockholders Equity StockholdersEquity	632908000	USD
CY2019Q2	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax	-2000	USD
CY2019Q2	us-gaap	Net Income Loss NetIncomeLoss	839000	USD
CY2019Q2	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	6739000	USD
CY2019Q2	us-gaap	Stock Repurchased And Retired During Period Value StockRepurchasedAndRetiredDuringPeriodValue	16980000	USD
CY2019Q2	us-gaap	Adjustments Related To Tax Withholding For Share Based Compensation AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation	2314000	USD
CY2019Q2	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	882000	USD
CY2019Q2	us-gaap	Stockholders Equity StockholdersEquity	622072000	USD
CY2019Q3	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax	-30000	USD
CY2019Q3	us-gaap	Net Income Loss NetIncomeLoss	12529000	USD
CY2019Q3	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	6986000	USD
CY2019Q3	us-gaap	Stock Repurchased And Retired During Period Value StockRepurchasedAndRetiredDuringPeriodValue	21966000	USD
CY2019Q3	us-gaap	Adjustments Related To Tax Withholding For Share Based Compensation AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation	400000	USD
CY2019Q3	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	2947000	USD
CY2019Q3	us-gaap	Stockholders Equity StockholdersEquity	622138000	USD
CY2017Q4	us-gaap	Minority Interest MinorityInterest	0	USD
CY2017Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	730485000	USD
CY2017Q4	us-gaap	Cumulative Effect Of New Accounting Principle In Period Of Adoption CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	8593000	USD
CY2018Q2	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	-49000	USD
CY2018Q2	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax	631000	USD
CY2018Q2	us-gaap	Net Income Loss NetIncomeLoss	5590000	USD
CY2018Q2	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	8150000	USD
CY2018Q2	us-gaap	Adjustments Related To Tax Withholding For Share Based Compensation AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation	2271000	USD
CY2018Q2	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	4590000	USD
CY2018Q2	us-gaap	Minority Interest MinorityInterest	0	USD
CY2018Q2	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	755719000	USD
CY2018Q3	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	53000	USD
CY2018Q3	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax	109000	USD
CY2018Q3	us-gaap	Net Income Loss NetIncomeLoss	-5230000	USD
CY2018Q3	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	8970000	USD
CY2018Q3	us-gaap	Adjustments Related To Tax Withholding For Share Based Compensation AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation	4897000	USD
CY2018Q3	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	1012000	USD
CY2018Q3	us-gaap	Minority Interest MinorityInterest	0	USD
CY2018Q3	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	755736000	USD
CY2018Q3	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	31000	USD
CY2018Q3	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax	40000	USD
CY2018Q3	us-gaap	Net Income Loss NetIncomeLoss	9949000	USD
CY2018Q3	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	-799000	USD
CY2018Q3	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	8612000	USD
CY2018Q3	ntgr	Noncontrolling Interest Sharebased Compensation NoncontrollingInterestSharebasedCompensation	942000	USD
CY2018Q3	us-gaap	Noncontrolling Interest Increase From Sale Of Parent Equity Interest NoncontrollingInterestIncreaseFromSaleOfParentEquityInterest	170246000	USD
CY2018Q3	us-gaap	Stock Repurchased And Retired During Period Value StockRepurchasedAndRetiredDuringPeriodValue	15000000	USD
CY2018Q3	us-gaap	Adjustments Related To Tax Withholding For Share Based Compensation AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation	414000	USD
CY2018Q3	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	5136000	USD
CY2018Q3	us-gaap	Minority Interest MinorityInterest	24301000	USD
CY2018Q3	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	934479000	USD
	us-gaap	Profit Loss ProfitLoss	26211000	USD
	us-gaap	Profit Loss ProfitLoss	9510000	USD
	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	0	USD
	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	-8351000	USD
	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	14577000	USD
	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	14260000	USD
	us-gaap	Share Based Compensation ShareBasedCompensation	20183000	USD
	us-gaap	Share Based Compensation ShareBasedCompensation	20228000	USD
	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	503000	USD
	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	53000	USD
	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-253000	USD
	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-519000	USD
	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	-55597000	USD
	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	-18760000	USD
	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	31713000	USD
	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	36326000	USD
	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	-2960000	USD
	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	5443000	USD
	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	-54574000	USD
	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	26546000	USD
	us-gaap	Increase Decrease In Employee Related Liabilities IncreaseDecreaseInEmployeeRelatedLiabilities	-13562000	USD
	us-gaap	Increase Decrease In Employee Related Liabilities IncreaseDecreaseInEmployeeRelatedLiabilities	-1521000	USD
	us-gaap	Increase Decrease In Other Accrued Liabilities IncreaseDecreaseInOtherAccruedLiabilities	-45240000	USD
	us-gaap	Increase Decrease In Other Accrued Liabilities IncreaseDecreaseInOtherAccruedLiabilities	-5384000	USD
	us-gaap	Increase Decrease In Contract With Customer Liability IncreaseDecreaseInContractWithCustomerLiability	-4152000	USD
	us-gaap	Increase Decrease In Contract With Customer Liability IncreaseDecreaseInContractWithCustomerLiability	3620000	USD
	us-gaap	Increase Decrease In Accrued Income Taxes Payable IncreaseDecreaseInAccruedIncomeTaxesPayable	-7087000	USD
	us-gaap	Increase Decrease In Accrued Income Taxes Payable IncreaseDecreaseInAccruedIncomeTaxesPayable	-10432000	USD
	us-gaap	Net Cash Provided By Used In Operating Activities Continuing Operations NetCashProvidedByUsedInOperatingActivitiesContinuingOperations	-36044000	USD
	us-gaap	Net Cash Provided By Used In Operating Activities Continuing Operations NetCashProvidedByUsedInOperatingActivitiesContinuingOperations	42741000	USD
	us-gaap	Cash Provided By Used In Operating Activities Discontinued Operations CashProvidedByUsedInOperatingActivitiesDiscontinuedOperations	0	USD
	us-gaap	Cash Provided By Used In Operating Activities Discontinued Operations CashProvidedByUsedInOperatingActivitiesDiscontinuedOperations	31115000	USD
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	-36044000	USD
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	73856000	USD
	us-gaap	Payments To Acquire Short Term Investments PaymentsToAcquireShortTermInvestments	282000	USD
	us-gaap	Payments To Acquire Short Term Investments PaymentsToAcquireShortTermInvestments	70157000	USD
	us-gaap	Proceeds From Sale Maturity And Collection Of Shortterm Investments ProceedsFromSaleMaturityAndCollectionOfShorttermInvestments	70786000	USD
	us-gaap	Proceeds From Sale Maturity And Collection Of Shortterm Investments ProceedsFromSaleMaturityAndCollectionOfShorttermInvestments	102054000	USD
	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	11797000	USD
	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	8950000	USD
	us-gaap	Proceeds From Sale Maturity And Collections Of Investments ProceedsFromSaleMaturityAndCollectionsOfInvestments	0	USD
	us-gaap	Proceeds From Sale Maturity And Collections Of Investments ProceedsFromSaleMaturityAndCollectionsOfInvestments	624000	USD
	us-gaap	Payments To Acquire Other Investments PaymentsToAcquireOtherInvestments	5484000	USD
	us-gaap	Payments To Acquire Other Investments PaymentsToAcquireOtherInvestments	0	USD
	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	0	USD
	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	14352000	USD
	us-gaap	Net Cash Provided By Used In Investing Activities Continuing Operations NetCashProvidedByUsedInInvestingActivitiesContinuingOperations	53223000	USD
	us-gaap	Net Cash Provided By Used In Investing Activities Continuing Operations NetCashProvidedByUsedInInvestingActivitiesContinuingOperations	9219000	USD
	us-gaap	Cash Provided By Used In Investing Activities Discontinued Operations CashProvidedByUsedInInvestingActivitiesDiscontinuedOperations	0	USD
	us-gaap	Cash Provided By Used In Investing Activities Discontinued Operations CashProvidedByUsedInInvestingActivitiesDiscontinuedOperations	-50707000	USD
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	53223000	USD
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-41488000	USD
	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	52365000	USD
	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	15000000	USD
	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	6058000	USD
	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	7583000	USD
	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	4582000	USD
	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	5183000	USD
	us-gaap	Proceeds From Issuance Of Shares Under Incentive And Share Based Compensation Plans Including Stock Options ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions	3617000	USD
	us-gaap	Proceeds From Issuance Of Shares Under Incentive And Share Based Compensation Plans Including Stock Options ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions	5554000	USD
	us-gaap	Net Cash Provided By Used In Financing Activities Continuing Operations NetCashProvidedByUsedInFinancingActivitiesContinuingOperations	-50224000	USD
	us-gaap	Net Cash Provided By Used In Financing Activities Continuing Operations NetCashProvidedByUsedInFinancingActivitiesContinuingOperations	-11846000	USD
	us-gaap	Cash Provided By Used In Financing Activities Discontinued Operations CashProvidedByUsedInFinancingActivitiesDiscontinuedOperations	0	USD
	us-gaap	Cash Provided By Used In Financing Activities Discontinued Operations CashProvidedByUsedInFinancingActivitiesDiscontinuedOperations	170248000	USD
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-50224000	USD
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	158402000	USD
	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-33045000	USD
	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	190770000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	201047000	USD
CY2017Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	202870000	USD
CY2019Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	168002000	USD
CY2018Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	393640000	USD
	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	3174000	USD
	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	-257000	USD
CY2019Q3	us-gaap	Business Combination Contingent Consideration Liability Noncurrent BusinessCombinationContingentConsiderationLiabilityNoncurrent	0	USD
CY2018Q3	us-gaap	Business Combination Contingent Consideration Liability Noncurrent BusinessCombinationContingentConsiderationLiabilityNoncurrent	5953000	USD
CY2018Q4	us-gaap	Prepaid Expense And Other Assets Current PrepaidExpenseAndOtherAssetsCurrent	35997000	USD
CY2019Q1	us-gaap	Prepaid Expense And Other Assets Current PrepaidExpenseAndOtherAssetsCurrent	35454000	USD
CY2018Q4	us-gaap	Assets Current AssetsCurrent	857899000	USD
CY2019Q1	us-gaap	Assets Current AssetsCurrent	857356000	USD
CY2018Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	0	USD
CY2019Q1	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	39110000	USD
CY2018Q4	us-gaap	Assets Assets	1043376000	USD
CY2019Q1	us-gaap	Assets Assets	1081943000	USD
CY2018Q4	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	199472000	USD
CY2019Q1	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	210381000	USD
CY2018Q4	us-gaap	Liabilities Current LiabilitiesCurrent	383992000	USD
CY2019Q1	us-gaap	Liabilities Current LiabilitiesCurrent	394901000	USD
CY2018Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	0	USD
CY2019Q1	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	33823000	USD
CY2018Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	12232000	USD
CY2019Q1	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	6067000	USD
CY2018Q4	us-gaap	Liabilities Liabilities	415824000	USD
CY2019Q1	us-gaap	Liabilities Liabilities	454391000	USD
CY2018Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	1043376000	USD
CY2019Q1	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	1081943000	USD
CY2019Q3	us-gaap	Revenue Remaining Performance Obligation RevenueRemainingPerformanceObligation	58528000	USD
CY2019Q3	us-gaap	Revenue Remaining Performance Obligation RevenueRemainingPerformanceObligation	921000	USD
CY2019Q3	us-gaap	Revenue Remaining Performance Obligation RevenueRemainingPerformanceObligation	1008000	USD
CY2019Q3	us-gaap	Revenue Remaining Performance Obligation RevenueRemainingPerformanceObligation	60457000	USD
CY2019Q3	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	248070000	USD
CY2018Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	303667000	USD
	ntgr	Contractwith Customer Asset Net Period Increase Decrease ContractwithCustomerAssetNetPeriodIncreaseDecrease	-55597000	USD
	ntgr	Contractwith Customer Asset Period Increase Decrease Percent ContractwithCustomerAssetPeriodIncreaseDecreasePercent	-0.183
CY2019Q3	us-gaap	Contract With Customer Liability Current ContractWithCustomerLiabilityCurrent	5812000	USD
CY2018Q4	us-gaap	Contract With Customer Liability Current ContractWithCustomerLiabilityCurrent	11086000	USD
	ntgr	Contractwith Customer Liability Current Period Increase Decrease ContractwithCustomerLiabilityCurrentPeriodIncreaseDecrease	-5274000	USD
	ntgr	Contractwith Customer Liability Current Period Increase Decrease Percent ContractwithCustomerLiabilityCurrentPeriodIncreaseDecreasePercent	-0.476
CY2019Q3	us-gaap	Contract With Customer Liability Noncurrent ContractWithCustomerLiabilityNoncurrent	1900000	USD
CY2018Q4	us-gaap	Contract With Customer Liability Noncurrent ContractWithCustomerLiabilityNoncurrent	779000	USD
	ntgr	Contractwith Customer Liability Noncurrent Period Increase Decrease ContractwithCustomerLiabilityNoncurrentPeriodIncreaseDecrease	1121000	USD
	ntgr	Contractwith Customer Liability Noncurrent Period Increase Decrease Percent ContractwithCustomerLiabilityNoncurrentPeriodIncreaseDecreasePercent	1.439
	ntgr	Contractwith Customer Liability Increase Dueto Unsatisfied Performance Obligations ContractwithCustomerLiabilityIncreaseDuetoUnsatisfiedPerformanceObligations	10800000	USD
	us-gaap	Contract With Customer Liability Revenue Recognized ContractWithCustomerLiabilityRevenueRecognized	14900000	USD
	ntgr	Contractwith Customer Liability Included In Beginning Balance Revenue Recognized ContractwithCustomerLiabilityIncludedInBeginningBalanceRevenueRecognized	9400000	USD
	ntgr	Numberof Geographic Regions NumberofGeographicRegions	3	region
	us-gaap	Number Of Operating Segments NumberOfOperatingSegments	2	segment
CY2019Q3	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	265858000	USD
CY2018Q3	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	269411000	USD
CY2019Q3	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	265858000	USD
CY2018Q3	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	269411000	USD
	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	745792000	USD
	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	769888000	USD
	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	745792000	USD
	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	769888000	USD
CY2018Q4	ntgr	Distribution Of Shares Outstanding Conversion Ratio DistributionOfSharesOutstandingConversionRatio	1.980295
CY2019Q3	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	145000	USD
CY2019Q3	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	0	USD
CY2019Q3	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	0	USD
CY2019Q3	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	145000	USD
CY2018Q4	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	70479000	USD
CY2018Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	1000	USD
CY2018Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	17000	USD
CY2018Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	70463000	USD
CY2019Q3	us-gaap	Inventory Raw Materials Net Of Reserves InventoryRawMaterialsNetOfReserves	45235000	USD
CY2018Q4	us-gaap	Inventory Raw Materials Net Of Reserves InventoryRawMaterialsNetOfReserves	3427000	USD
CY2019Q3	us-gaap	Inventory Finished Goods Net Of Reserves InventoryFinishedGoodsNetOfReserves	230349000	USD
CY2018Q4	us-gaap	Inventory Finished Goods Net Of Reserves InventoryFinishedGoodsNetOfReserves	240444000	USD
CY2019Q3	us-gaap	Inventory Net InventoryNet	275584000	USD
CY2018Q4	us-gaap	Inventory Net InventoryNet	243871000	USD
CY2019Q3	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	124333000	USD
CY2018Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	116108000	USD
CY2019Q3	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	104662000	USD
CY2018Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	95931000	USD
CY2019Q3	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	19671000	USD
CY2018Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	20177000	USD
CY2019Q3	us-gaap	Depreciation Depreciation	3000000.0	USD
	us-gaap	Depreciation Depreciation	9100000	USD
CY2018Q3	us-gaap	Depreciation Depreciation	2500000	USD
	us-gaap	Depreciation Depreciation	8000000.0	USD
CY2019Q3	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	126944000	USD
CY2019Q3	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	115245000	USD
CY2019Q3	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	11699000	USD
CY2018Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	126944000	USD
CY2018Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	109798000	USD
CY2018Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	17146000	USD
CY2019Q3	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	1600000	USD
	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	5400000	USD
CY2018Q3	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	2000000.0	USD
	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	6200000	USD
CY2019Q3	us-gaap	Finite Lived Intangible Assets Amortization Expense Remainder Of Fiscal Year FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear	1594000	USD
CY2019Q3	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	6205000	USD
CY2019Q3	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Three FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	2044000	USD
CY2019Q3	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	527000	USD
CY2019Q3	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Five FiniteLivedIntangibleAssetsAmortizationExpenseYearFive	514000	USD
CY2019Q3	us-gaap	Finite Lived Intangible Assets Amortization Expense After Year Five FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive	815000	USD
CY2019Q3	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	11699000	USD
CY2019Q3	us-gaap	Deferred Income Tax Assets Net DeferredIncomeTaxAssetsNet	57055000	USD
CY2018Q4	us-gaap	Deferred Income Tax Assets Net DeferredIncomeTaxAssetsNet	57557000	USD
CY2019Q3	us-gaap	Equity Securities Without Readily Determinable Fair Value Amount EquitySecuritiesWithoutReadilyDeterminableFairValueAmount	8147000	USD
CY2019Q3	us-gaap	Product Warranty Accrual Classified Current ProductWarrantyAccrualClassifiedCurrent	10858000	USD
CY2018Q4	us-gaap	Product Warranty Accrual Classified Current ProductWarrantyAccrualClassifiedCurrent	14412000	USD
CY2019Q3	us-gaap	Contract With Customer Refund Liability Current ContractWithCustomerRefundLiabilityCurrent	45547000	USD
CY2018Q4	us-gaap	Contract With Customer Refund Liability Current ContractWithCustomerRefundLiabilityCurrent	46318000	USD
CY2018Q4	us-gaap	Equity Securities Without Readily Determinable Fair Value Amount EquitySecuritiesWithoutReadilyDeterminableFairValueAmount	2886000	USD
CY2019Q3	us-gaap	Other Assets Miscellaneous Noncurrent OtherAssetsMiscellaneousNoncurrent	7434000	USD
CY2018Q4	us-gaap	Other Assets Miscellaneous Noncurrent OtherAssetsMiscellaneousNoncurrent	6990000	USD
CY2019Q3	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	72636000	USD
CY2018Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	67433000	USD
CY2019Q3	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	9765000	USD
CY2018Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	0	USD
CY2019Q3	us-gaap	Accrued Marketing Costs Current AccruedMarketingCostsCurrent	63027000	USD
CY2018Q4	us-gaap	Accrued Marketing Costs Current AccruedMarketingCostsCurrent	91548000	USD
CY2019Q3	ntgr	Accrued Freight Charges AccruedFreightCharges	5519000	USD
CY2018Q4	ntgr	Accrued Freight Charges AccruedFreightCharges	10586000	USD
CY2019Q3	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	28617000	USD
CY2018Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	36608000	USD
CY2019Q3	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	163333000	USD
CY2018Q4	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	199472000	USD
CY2019Q3	us-gaap	Derivative Fair Value Of Derivative Asset DerivativeFairValueOfDerivativeAsset	1097000	USD
CY2018Q4	us-gaap	Derivative Fair Value Of Derivative Asset DerivativeFairValueOfDerivativeAsset	786000	USD
CY2019Q3	us-gaap	Derivative Fair Value Of Derivative Liability DerivativeFairValueOfDerivativeLiability	208000	USD
CY2019Q3	us-gaap	Derivative Fair Value Of Derivative Asset Amount Offset Against Collateral DerivativeFairValueOfDerivativeAssetAmountOffsetAgainstCollateral	0	USD
CY2018Q4	us-gaap	Derivative Fair Value Of Derivative Liability DerivativeFairValueOfDerivativeLiability	368000	USD
CY2019Q3	us-gaap	Derivative Fair Value Of Derivative Asset DerivativeFairValueOfDerivativeAsset	1097000	USD
CY2018Q4	us-gaap	Derivative Fair Value Of Derivative Asset Amount Not Offset Against Collateral DerivativeFairValueOfDerivativeAssetAmountNotOffsetAgainstCollateral	786000	USD
CY2018Q4	us-gaap	Derivative Asset Fair Value Gross Liability DerivativeAssetFairValueGrossLiability	362000	USD
CY2018Q4	us-gaap	Derivative Collateral Obligation To Return Cash DerivativeCollateralObligationToReturnCash	0	USD
CY2018Q4	us-gaap	Derivative Assets DerivativeAssets	424000	USD
CY2019Q3	us-gaap	Derivative Fair Value Of Derivative Liability DerivativeFairValueOfDerivativeLiability	208000	USD
CY2018Q4	us-gaap	Derivative Fair Value Of Derivative Liability DerivativeFairValueOfDerivativeLiability	368000	USD
CY2018Q4	us-gaap	Derivative Fair Value Of Derivative Liability Amount Offset Against Collateral DerivativeFairValueOfDerivativeLiabilityAmountOffsetAgainstCollateral	0	USD
CY2018Q4	us-gaap	Derivative Fair Value Of Derivative Liability Amount Not Offset Against Collateral DerivativeFairValueOfDerivativeLiabilityAmountNotOffsetAgainstCollateral	368000	USD
CY2019Q3	us-gaap	Derivative Fair Value Of Derivative Asset Amount Not Offset Against Collateral DerivativeFairValueOfDerivativeAssetAmountNotOffsetAgainstCollateral	1097000	USD
CY2019Q3	us-gaap	Derivative Asset Fair Value Gross Liability DerivativeAssetFairValueGrossLiability	208000	USD
CY2019Q3	us-gaap	Derivative Collateral Obligation To Return Cash DerivativeCollateralObligationToReturnCash	0	USD
CY2019Q3	us-gaap	Derivative Assets DerivativeAssets	889000	USD
CY2018Q4	us-gaap	Derivative Fair Value Of Derivative Asset DerivativeFairValueOfDerivativeAsset	786000	USD
CY2018Q4	us-gaap	Derivative Fair Value Of Derivative Asset Amount Offset Against Collateral DerivativeFairValueOfDerivativeAssetAmountOffsetAgainstCollateral	0	USD
CY2019Q3	us-gaap	Derivative Fair Value Of Derivative Liability Amount Offset Against Collateral DerivativeFairValueOfDerivativeLiabilityAmountOffsetAgainstCollateral	0	USD
CY2019Q3	us-gaap	Derivative Fair Value Of Derivative Liability Amount Not Offset Against Collateral DerivativeFairValueOfDerivativeLiabilityAmountNotOffsetAgainstCollateral	208000	USD
CY2019Q3	us-gaap	Derivative Liability Fair Value Gross Asset DerivativeLiabilityFairValueGrossAsset	208000	USD
CY2019Q3	us-gaap	Derivative Collateral Right To Reclaim Cash DerivativeCollateralRightToReclaimCash	0	USD
CY2019Q3	us-gaap	Derivative Liabilities DerivativeLiabilities	0	USD
CY2018Q4	us-gaap	Derivative Liability Fair Value Gross Asset DerivativeLiabilityFairValueGrossAsset	362000	USD
CY2018Q4	us-gaap	Derivative Collateral Right To Reclaim Cash DerivativeCollateralRightToReclaimCash	0	USD
CY2018Q4	us-gaap	Derivative Liabilities DerivativeLiabilities	6000	USD
CY2019Q3	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	265858000	USD
CY2019Q3	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	188666000	USD
CY2019Q3	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	19537000	USD
CY2019Q3	us-gaap	Selling And Marketing Expense SellingAndMarketingExpense	33491000	USD
CY2019Q3	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	11887000	USD
CY2018Q3	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	269411000	USD
CY2018Q3	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	174966000	USD
CY2018Q3	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	20136000	USD
CY2018Q3	us-gaap	Selling And Marketing Expense SellingAndMarketingExpense	37892000	USD
CY2018Q3	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	16184000	USD
	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	745792000	USD
	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	521147000	USD
	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	57183000	USD
	us-gaap	Selling And Marketing Expense SellingAndMarketingExpense	103887000	USD
	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	35467000	USD
	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	769888000	USD
	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	518844000	USD
	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	63273000	USD
	us-gaap	Selling And Marketing Expense SellingAndMarketingExpense	114318000	USD
	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	50403000	USD
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	31221000	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	31634000	shares
CY2019Q3	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	886000	shares
CY2018Q3	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	1172000	shares
CY2019Q3	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	12529000	USD
CY2018Q3	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	16310000	USD
	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	26211000	USD
	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	17861000	USD
CY2019Q3	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	0	USD
CY2018Q3	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	-7160000	USD
	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	0	USD
	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	-8351000	USD
CY2019Q3	us-gaap	Profit Loss ProfitLoss	12529000	USD
CY2018Q3	us-gaap	Profit Loss ProfitLoss	9150000	USD
	us-gaap	Profit Loss ProfitLoss	26211000	USD
	us-gaap	Profit Loss ProfitLoss	9510000	USD
CY2019Q3	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	0	USD
CY2018Q3	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	-799000	USD
	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	0	USD
	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	-799000	USD
CY2019Q3	us-gaap	Net Income Loss NetIncomeLoss	12529000	USD
CY2018Q3	us-gaap	Net Income Loss NetIncomeLoss	9949000	USD
	us-gaap	Net Income Loss NetIncomeLoss	26211000	USD
	us-gaap	Net Income Loss NetIncomeLoss	10309000	USD
CY2019Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	30933000	shares
CY2018Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	31802000	shares
	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	1106000	shares
	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	1192000	shares
CY2019Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	31819000	shares
CY2018Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	32974000	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	32327000	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	32826000	shares
CY2019Q3	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	0.41
CY2018Q3	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	0.51
	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	0.84
	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	0.56
CY2019Q3	us-gaap	Discontinued Operation Income Loss From Discontinued Operation Net Of Tax Per Basic Share DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerBasicShare	0
CY2018Q3	us-gaap	Discontinued Operation Income Loss From Discontinued Operation Net Of Tax Per Basic Share DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerBasicShare	-0.20
	us-gaap	Discontinued Operation Income Loss From Discontinued Operation Net Of Tax Per Basic Share DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerBasicShare	0
	us-gaap	Discontinued Operation Income Loss From Discontinued Operation Net Of Tax Per Basic Share DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerBasicShare	-0.23
CY2019Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.41
CY2018Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.31
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.84
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.33
CY2019Q3	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	0.39
CY2018Q3	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	0.49
	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	0.81
	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	0.54
CY2019Q3	us-gaap	Discontinued Operation Income Loss From Discontinued Operation Net Of Tax Per Diluted Share DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerDilutedShare	0
CY2018Q3	us-gaap	Discontinued Operation Income Loss From Discontinued Operation Net Of Tax Per Diluted Share DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerDilutedShare	-0.19
	us-gaap	Discontinued Operation Income Loss From Discontinued Operation Net Of Tax Per Diluted Share DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerDilutedShare	0
	us-gaap	Discontinued Operation Income Loss From Discontinued Operation Net Of Tax Per Diluted Share DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerDilutedShare	-0.23
CY2019Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.39
CY2018Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.30
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.81
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.31
CY2019Q3	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	1587000	shares
CY2018Q3	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	450000	shares
	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	625000	shares
	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	874000	shares
CY2019Q3	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	-0.019
	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.094
CY2018Q3	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.252
	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.272
CY2019Q3	us-gaap	Significant Change In Unrecognized Tax Benefits Is Reasonably Possible Amount Of Unrecorded Benefit SignificantChangeInUnrecognizedTaxBenefitsIsReasonablyPossibleAmountOfUnrecordedBenefit	700000	USD
	ntgr	Number Of Days For Non Cancellation Of Purchase Obligations Prior To Expected Shipment Date NumberOfDaysForNonCancellationOfPurchaseObligationsPriorToExpectedShipmentDate	P30D
CY2019Q3	us-gaap	Purchase Commitment Remaining Minimum Amount Committed PurchaseCommitmentRemainingMinimumAmountCommitted	95100000	USD
CY2019Q2	us-gaap	Product Warranty Accrual ProductWarrantyAccrual	11913000	USD
CY2018Q3	us-gaap	Product Warranty Accrual ProductWarrantyAccrual	15271000	USD
CY2018Q4	us-gaap	Product Warranty Accrual ProductWarrantyAccrual	14412000	USD
CY2017Q4	us-gaap	Product Warranty Accrual ProductWarrantyAccrual	44068000	USD
CY2019Q3	ntgr	Standardand Extended Product Warranty Accrual Decreasefor Reclassifications StandardandExtendedProductWarrantyAccrualDecreaseforReclassifications	0	USD
CY2018Q3	ntgr	Standardand Extended Product Warranty Accrual Decreasefor Reclassifications StandardandExtendedProductWarrantyAccrualDecreaseforReclassifications	0	USD
	ntgr	Non Cancelable Leases Expiration Date NonCancelableLeasesExpirationDate	December 2026
	ntgr	Standardand Extended Product Warranty Accrual Decreasefor Reclassifications StandardandExtendedProductWarrantyAccrualDecreaseforReclassifications	0	USD
	ntgr	Standardand Extended Product Warranty Accrual Decreasefor Reclassifications StandardandExtendedProductWarrantyAccrualDecreaseforReclassifications	29147000	USD
CY2019Q3	us-gaap	Product Warranty Accrual Warranties Issued ProductWarrantyAccrualWarrantiesIssued	1558000	USD
CY2018Q3	us-gaap	Product Warranty Accrual Warranties Issued ProductWarrantyAccrualWarrantiesIssued	2987000	USD
	us-gaap	Product Warranty Accrual Warranties Issued ProductWarrantyAccrualWarrantiesIssued	4970000	USD
	us-gaap	Product Warranty Accrual Warranties Issued ProductWarrantyAccrualWarrantiesIssued	10009000	USD
CY2019Q3	us-gaap	Product Warranty Accrual Payments ProductWarrantyAccrualPayments	2613000	USD
CY2018Q3	us-gaap	Product Warranty Accrual Payments ProductWarrantyAccrualPayments	3350000	USD
	us-gaap	Product Warranty Accrual Payments ProductWarrantyAccrualPayments	8524000	USD
	us-gaap	Product Warranty Accrual Payments ProductWarrantyAccrualPayments	10022000	USD
CY2019Q3	us-gaap	Product Warranty Accrual ProductWarrantyAccrual	10858000	USD
CY2018Q3	us-gaap	Product Warranty Accrual ProductWarrantyAccrual	14908000	USD
CY2019Q3	us-gaap	Product Warranty Accrual ProductWarrantyAccrual	10858000	USD
CY2018Q3	us-gaap	Product Warranty Accrual ProductWarrantyAccrual	14908000	USD
CY2019Q3	ntgr	Liability For Director And Officer Indemnification Agreements LiabilityForDirectorAndOfficerIndemnificationAgreements	0	USD
CY2019Q3	ntgr	Liability For Customers Distributors And Resellers Indemnification Agreements LiabilityForCustomersDistributorsAndResellersIndemnificationAgreements	0	USD
	ntgr	Period Following Changeof Company Control Executive Officer Termination Entitlements PeriodFollowingChangeofCompanyControlExecutiveOfficerTerminationEntitlements	P12M
CY2019Q3	ntgr	Liabilitiesforexecutivesemploymentagreements Liabilitiesforexecutivesemploymentagreements	0	USD
CY2019Q3	ntgr	Numberofexitingcasesandproceedingsthatthe Companycurrentlybelievesarelikingtohaveamaterialadverseeffectonitsfinancialposition NumberofexitingcasesandproceedingsthattheCompanycurrentlybelievesarelikingtohaveamaterialadverseeffectonitsfinancialposition	0	claim
	ntgr	Future Legnth Company Currently Considered Regarding Existing Cases And Proceedings That Are Likely To Have Material Advese Effect On It In Months FutureLegnthCompanyCurrentlyConsideredRegardingExistingCasesAndProceedingsThatAreLikelyToHaveMaterialAdveseEffectOnItInMonths	P12M
CY2019Q1	ntgr	Number Of Class Action Lawsuits NumberOfClassActionLawsuits	6	case
CY2019Q1	ntgr	Number Of Class Action Lawsuits NumberOfClassActionLawsuits	6	case
CY2019Q1	ntgr	Number Of Class Action Lawsuits NumberOfClassActionLawsuits	6	case
CY2019Q3	us-gaap	Stock Repurchase Program Number Of Shares Authorized To Be Repurchased StockRepurchaseProgramNumberOfSharesAuthorizedToBeRepurchased	4500000	shares
CY2019Q3	us-gaap	Stock Repurchase Program Remaining Number Of Shares Authorized To Be Repurchased StockRepurchaseProgramRemainingNumberOfSharesAuthorizedToBeRepurchased	4300000	shares
	us-gaap	Stock Repurchased And Retired During Period Shares StockRepurchasedAndRetiredDuringPeriodShares	1700000	shares
	us-gaap	Stock Repurchased And Retired During Period Value StockRepurchasedAndRetiredDuringPeriodValue	53900000	USD
	us-gaap	Stock Repurchased And Retired During Period Shares StockRepurchasedAndRetiredDuringPeriodShares	200000	shares
	us-gaap	Stock Repurchased And Retired During Period Value StockRepurchasedAndRetiredDuringPeriodValue	15000000.0	USD
	us-gaap	Shares Paid For Tax Withholding For Share Based Compensation SharesPaidForTaxWithholdingForShareBasedCompensation	200000	shares
	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	6100000	USD
	us-gaap	Shares Paid For Tax Withholding For Share Based Compensation SharesPaidForTaxWithholdingForShareBasedCompensation	100000	shares
	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	7600000	USD
CY2018Q4	us-gaap	Aoci Tax Attributable To Parent AociTaxAttributableToParent	-11000	USD
	us-gaap	Other Comprehensive Income Loss Before Reclassifications Tax OtherComprehensiveIncomeLossBeforeReclassificationsTax	284000	USD
	us-gaap	Oci Before Reclassifications Net Of Tax Attributable To Parent OciBeforeReclassificationsNetOfTaxAttributableToParent	1054000	USD
	us-gaap	Reclassification From Aoci Current Period Tax ReclassificationFromAociCurrentPeriodTax	281000	USD
	us-gaap	Reclassification From Aoci Current Period Net Of Tax Attributable To Parent ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent	1057000	USD
	us-gaap	Other Comprehensive Income Loss Tax Portion Attributable To Parent1 OtherComprehensiveIncomeLossTaxPortionAttributableToParent1	3000	USD
	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-3000	USD
CY2019Q3	us-gaap	Aoci Tax Attributable To Parent AociTaxAttributableToParent	-8000	USD
CY2017Q4	us-gaap	Aoci Tax Attributable To Parent AociTaxAttributableToParent	-133000	USD
	us-gaap	Other Comprehensive Income Loss Before Reclassifications Tax OtherComprehensiveIncomeLossBeforeReclassificationsTax	165000	USD
	us-gaap	Oci Before Reclassifications Net Of Tax Attributable To Parent OciBeforeReclassificationsNetOfTaxAttributableToParent	982000	USD
	us-gaap	Reclassification From Aoci Current Period Tax ReclassificationFromAociCurrentPeriodTax	44000	USD
	us-gaap	Reclassification From Aoci Current Period Net Of Tax Attributable To Parent ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent	167000	USD
	us-gaap	Other Comprehensive Income Loss Tax Portion Attributable To Parent1 OtherComprehensiveIncomeLossTaxPortionAttributableToParent1	121000	USD
	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	815000	USD
CY2018Q3	us-gaap	Aoci Tax Attributable To Parent AociTaxAttributableToParent	-12000	USD
CY2019Q3	us-gaap	Share Based Compensation ShareBasedCompensation	6986000	USD
CY2018Q3	ntgr	Corporate And Unallocated Income CorporateAndUnallocatedIncome	22391000	USD
	ntgr	Corporate And Unallocated Income CorporateAndUnallocatedIncome	51609000	USD
	ntgr	Corporate And Unallocated Income CorporateAndUnallocatedIncome	69727000	USD
CY2019Q3	ntgr	Amortization Of Intangible Asset AmortizationOfIntangibleAsset	1520000	USD
CY2018Q3	ntgr	Amortization Of Intangible Asset AmortizationOfIntangibleAsset	1922000	USD
	ntgr	Amortization Of Intangible Asset AmortizationOfIntangibleAsset	5212000	USD
	ntgr	Amortization Of Intangible Asset AmortizationOfIntangibleAsset	5967000	USD
CY2019Q3	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	6986000	USD
CY2018Q3	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	6118000	USD
	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	20183000	USD
	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	20228000	USD
	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	2	segment
CY2019Q3	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	265858000	USD
CY2018Q3	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	269411000	USD
	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	745792000	USD
	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	769888000	USD
CY2019Q3	ntgr	Total Segment Contribution Income TotalSegmentContributionIncome	37684000	USD
CY2018Q3	ntgr	Total Segment Contribution Income TotalSegmentContributionIncome	50664000	USD
	ntgr	Total Segment Contribution Income TotalSegmentContributionIncome	105112000	USD
	ntgr	Total Segment Contribution Income TotalSegmentContributionIncome	118972000	USD
CY2019Q3	ntgr	Corporate And Unallocated Income CorporateAndUnallocatedIncome	16901000	USD
CY2018Q3	us-gaap	Professional Fees ProfessionalFees	379000	USD
	us-gaap	Professional Fees ProfessionalFees	264000	USD
	us-gaap	Professional Fees ProfessionalFees	379000	USD
CY2019Q3	us-gaap	Business Combination Contingent Consideration Arrangements Change In Amount Of Contingent Consideration Liability1 BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1	199000	USD
CY2018Q3	us-gaap	Gain Loss Related To Litigation Settlement GainLossRelatedToLitigationSettlement	0	USD
	us-gaap	Gain Loss Related To Litigation Settlement GainLossRelatedToLitigationSettlement	-100000	USD
	us-gaap	Gain Loss Related To Litigation Settlement GainLossRelatedToLitigationSettlement	-5000	USD
CY2019Q3	us-gaap	Investment Income Interest InvestmentIncomeInterest	639000	USD
CY2018Q3	us-gaap	Investment Income Interest InvestmentIncomeInterest	985000	USD
	us-gaap	Investment Income Interest InvestmentIncomeInterest	2122000	USD
CY2018Q3	us-gaap	Share Based Compensation ShareBasedCompensation	6118000	USD
	us-gaap	Share Based Compensation ShareBasedCompensation	20183000	USD
	us-gaap	Share Based Compensation ShareBasedCompensation	20228000	USD
CY2019Q3	us-gaap	Professional Fees ProfessionalFees	0	USD
CY2018Q3	us-gaap	Business Combination Contingent Consideration Arrangements Change In Amount Of Contingent Consideration Liability1 BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1	0	USD
	us-gaap	Business Combination Contingent Consideration Arrangements Change In Amount Of Contingent Consideration Liability1 BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1	199000	USD
	us-gaap	Business Combination Contingent Consideration Arrangements Change In Amount Of Contingent Consideration Liability1 BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1	0	USD
CY2019Q3	ntgr	Restructuring And Other Charges RestructuringAndOtherCharges	-77000	USD
CY2018Q3	ntgr	Restructuring And Other Charges RestructuringAndOtherCharges	1000	USD
	ntgr	Restructuring And Other Charges RestructuringAndOtherCharges	1146000	USD
	ntgr	Restructuring And Other Charges RestructuringAndOtherCharges	1368000	USD
CY2019Q3	us-gaap	Gain Loss Related To Litigation Settlement GainLossRelatedToLitigationSettlement	-90000	USD
	us-gaap	Investment Income Interest InvestmentIncomeInterest	2806000	USD
CY2019Q3	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-403000	USD
CY2018Q3	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	955000	USD
	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	425000	USD
	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	425000	USD
CY2019Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	12301000	USD
CY2018Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	21793000	USD
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	28946000	USD
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	24529000	USD
	ntgr	Numberof Geographic Regions NumberofGeographicRegions	3	region
CY2019Q3	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	265858000	USD
CY2019Q3	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P4Y7M6D
CY2019Q3	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.038
CY2018Q3	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	269411000	USD
	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	745792000	USD
	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	769888000	USD
CY2019Q3	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	19671000	USD
CY2018Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	20177000	USD
CY2019Q3	us-gaap	Assets Fair Value Disclosure AssetsFairValueDisclosure	36584000	USD
CY2019Q3	us-gaap	Liabilities Fair Value Disclosure LiabilitiesFairValueDisclosure	6360000	USD
CY2018Q4	us-gaap	Assets Fair Value Disclosure AssetsFairValueDisclosure	96676000	USD
CY2018Q4	us-gaap	Liabilities Fair Value Disclosure LiabilitiesFairValueDisclosure	6321000	USD
CY2019Q3	us-gaap	Operating Lease Cost OperatingLeaseCost	2977000	USD
	us-gaap	Operating Lease Cost OperatingLeaseCost	8928000	USD
CY2019Q3	us-gaap	Short Term Lease Cost ShortTermLeaseCost	121000	USD
	us-gaap	Short Term Lease Cost ShortTermLeaseCost	1004000	USD
CY2019Q3	us-gaap	Lease Cost LeaseCost	3098000	USD
	us-gaap	Lease Cost LeaseCost	9932000	USD
	us-gaap	Operating Lease Payments OperatingLeasePayments	8982000	USD
	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	834000	USD
CY2019Q3	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	10165000	USD
CY2019Q3	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	8015000	USD
CY2019Q3	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	6980000	USD
CY2019Q3	us-gaap	Lessee Operating Lease Liability Payments Due Year Five LesseeOperatingLeaseLiabilityPaymentsDueYearFive	4502000	USD
CY2019Q3	us-gaap	Lessee Operating Lease Liability Payments Due After Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive	7691000	USD
CY2019Q3	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	40289000	USD
CY2019Q3	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	3346000	USD
CY2019Q3	us-gaap	Operating Lease Liability OperatingLeaseLiability	36943000	USD
CY2019Q3	us-gaap	Lessee Operating Lease Liability Payments Remainder Of Fiscal Year LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear	2936000	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due Current OperatingLeasesFutureMinimumPaymentsDueCurrent	11900000	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due In Two Years OperatingLeasesFutureMinimumPaymentsDueInTwoYears	9986000	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due In Three Years OperatingLeasesFutureMinimumPaymentsDueInThreeYears	7785000	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due In Four Years OperatingLeasesFutureMinimumPaymentsDueInFourYears	6856000	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due In Five Years OperatingLeasesFutureMinimumPaymentsDueInFiveYears	4478000	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due Thereafter OperatingLeasesFutureMinimumPaymentsDueThereafter	7725000	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due OperatingLeasesFutureMinimumPaymentsDue	48730000	USD

Files In Submission

Name	View Source	Status
0001122904-19-000245-index-headers.html	Edgar Link	pending
0001122904-19-000245-index.html	Edgar Link	pending
0001122904-19-000245.txt	Edgar Link	pending
0001122904-19-000245-xbrl.zip	Edgar Link	pending
FilingSummary.xml	Edgar Link	unprocessable
Financial_Report.xlsx	Edgar Link	pending
MetaLinks.json	Edgar Link	pending
ntgr-20190929.xsd	Edgar Link	pending
ntgr-20190929_cal.xml	Edgar Link	unprocessable
ntgr-20190929_def.xml	Edgar Link	unprocessable
ntgr-20190929_lab.xml	Edgar Link	unprocessable
ntgr-20190929_pre.xml	Edgar Link	unprocessable
ntgr-ex3112019q3x10q.htm	Edgar Link	pending
ntgr-ex3122019q3x10q.htm	Edgar Link	pending
ntgr-ex3212019q3x10q.htm	Edgar Link	pending
ntgr-ex3222019q3x10q.htm	Edgar Link	pending
ntgr2019q3-10q.htm	Edgar Link	pending
ntgr2019q3-10q_htm.xml	Edgar Link	completed
R1.htm	Edgar Link	pending
R10.htm	Edgar Link	pending
R11.htm	Edgar Link	pending
R12.htm	Edgar Link	pending
R13.htm	Edgar Link	pending
R14.htm	Edgar Link	pending
R15.htm	Edgar Link	pending
R16.htm	Edgar Link	pending
R17.htm	Edgar Link	pending
R18.htm	Edgar Link	pending
R19.htm	Edgar Link	pending
R2.htm	Edgar Link	pending
R20.htm	Edgar Link	pending
R21.htm	Edgar Link	pending
R22.htm	Edgar Link	pending
R23.htm	Edgar Link	pending
R24.htm	Edgar Link	pending
R25.htm	Edgar Link	pending
R26.htm	Edgar Link	pending
R27.htm	Edgar Link	pending
R28.htm	Edgar Link	pending
R29.htm	Edgar Link	pending
R3.htm	Edgar Link	pending
R30.htm	Edgar Link	pending
R31.htm	Edgar Link	pending
R32.htm	Edgar Link	pending
R33.htm	Edgar Link	pending
R34.htm	Edgar Link	pending
R35.htm	Edgar Link	pending
R36.htm	Edgar Link	pending
R37.htm	Edgar Link	pending
R38.htm	Edgar Link	pending
R39.htm	Edgar Link	pending
R4.htm	Edgar Link	pending
R40.htm	Edgar Link	pending
R41.htm	Edgar Link	pending
R42.htm	Edgar Link	pending
R43.htm	Edgar Link	pending
R44.htm	Edgar Link	pending
R45.htm	Edgar Link	pending
R46.htm	Edgar Link	pending
R47.htm	Edgar Link	pending
R48.htm	Edgar Link	pending
R49.htm	Edgar Link	pending
R5.htm	Edgar Link	pending
R50.htm	Edgar Link	pending
R51.htm	Edgar Link	pending
R52.htm	Edgar Link	pending
R53.htm	Edgar Link	pending
R54.htm	Edgar Link	pending
R55.htm	Edgar Link	pending
R56.htm	Edgar Link	pending
R57.htm	Edgar Link	pending
R58.htm	Edgar Link	pending
R59.htm	Edgar Link	pending
R6.htm	Edgar Link	pending
R60.htm	Edgar Link	pending
R61.htm	Edgar Link	pending
R62.htm	Edgar Link	pending
R63.htm	Edgar Link	pending
R64.htm	Edgar Link	pending
R65.htm	Edgar Link	pending
R66.htm	Edgar Link	pending
R67.htm	Edgar Link	pending
R68.htm	Edgar Link	pending
R69.htm	Edgar Link	pending
R7.htm	Edgar Link	pending
R70.htm	Edgar Link	pending
R71.htm	Edgar Link	pending
R72.htm	Edgar Link	pending
R73.htm	Edgar Link	pending
R74.htm	Edgar Link	pending
R75.htm	Edgar Link	pending
R76.htm	Edgar Link	pending
R77.htm	Edgar Link	pending
R78.htm	Edgar Link	pending
R79.htm	Edgar Link	pending
R8.htm	Edgar Link	pending
R80.htm	Edgar Link	pending
R81.htm	Edgar Link	pending
R82.htm	Edgar Link	pending
R83.htm	Edgar Link	pending
R84.htm	Edgar Link	pending
R9.htm	Edgar Link	pending
report.css	Edgar Link	pending
Show.js	Edgar Link	pending

Create your account

Find Stocks Worth Researching

Deeply Understand Businesses

Value Businesses Intelligently

$NTGR
NETGEAR, INC. Stock $ntgr

2019 Q4 Form 10-Q Financial Statement

#000112290419000245 Filed on November 01, 2019

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$NTGR NETGEAR, INC. Stock $ntgr

2019 Q4 Form 10-Q Financial Statement

#000112290419000245 Filed on November 01, 2019

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$NTGR
NETGEAR, INC. Stock $ntgr