Commitments And Contingencies (Narrative) (Details) (USD $)	1 Months Ended	3 Months Ended	6 Months Ended					6 Months Ended		6 Months Ended
	Oct. 31, 2008 companies	Sep. 29, 2013	Jun. 29, 2014 patent case Y supplier claims	Mar. 30, 2014 case	May 21, 2013 case	Sep. 17, 2012 patent	Sep. 14, 2010 patents	Jun. 29, 2014 Garnet Digital v. NETGEAR [Member] D	May 31, 2014 Garnet Digital v. NETGEAR [Member]	Jun. 29, 2014 Minimum [Member] 46 To 60 Days [Member]	Jun. 29, 2014 Minimum [Member] 31 To 45 Days [Member]	Jun. 29, 2014 Maximum [Member] 46 To 60 Days [Member]	Jun. 29, 2014 Maximum [Member] 31 To 45 Days [Member]	Jun. 29, 2014 inception to date [Member]	Jun. 29, 2014 Chief Executive Officer [Member]	Jun. 29, 2014 Senior Vice President Of Worldwide Operations And Support [Member]	Jun. 29, 2014 Other Key Executives [Member]	Jun. 29, 2014 D-Link [Member] Ericsson v. NETGEAR [Member]	Jun. 29, 2014 NETGEAR [Member] Ericsson v. NETGEAR [Member]	Jun. 29, 2014 Toshiba [Member] Ericsson v. NETGEAR [Member]	Jun. 29, 2014 Belkin [Member] Ericsson v. NETGEAR [Member]	Jun. 29, 2014 Acer Gateway [Member] Ericsson v. NETGEAR [Member]	Jun. 29, 2014 Dell [Member] Ericsson v. NETGEAR [Member]	Jun. 29, 2014 31 To 45 Days [Member]	Jun. 29, 2014 46 To 60 Days [Member]
Commitments And Contingencies [Line Items]
Operating leases expiration date			Dec. 31, 2026
Percentage of cancelable orders																								25.00%	50.00%
Required notice period prior to the expected shipment date (in days)										46 days	31 days	60 days	45 days
Number of days for non-cancellation of purchase obligations prior to expected shipment date (in days)			30 days
Non-cancelable purchase commitments			$ 188,000,000
Number of weeks for which salary is payable upon termination of employment without cause (in days)															365 days	273 days	182 days
Continued vesting period after termination without cause (in years)			1 year
Number of years after change of control to trigger full accelerated vest of unvested portion of stock options (in years)															1 year
Maximum number of years covered by accelerated vest for other key executives if term without cause is within one year of change in control (in years)																	2 years
Liabilities for executive's employment agreements			0
Number of exiting cases and procedings that the Company currently believes are liking to have a material adverse effect on its financial position			0
The future legnth the Company currently considered regarding existing cases and proceedings that are likely to have a material advese effect on it (in months)			12 months
Number of other companies lawsuit was filed against (in companies)	30
Number of patents company is accused of infringing (in patents)						3	8
Number of Remaining Patents Company is Accused of Infringing			5
Loss Contingency, Damages Awarded, Value																		435,000	3,555,000	2,445,000	600,000	1,170,000	1,920,000
Reasonable and nondiscriminatory (RAND) royalty rate (USD per unit)			0.15
Foregone colleting verdict amount (in USD)			3,555,000
Foregone colleting prejudgement interest ( in USD)			224,141
Foregone colleting prejectment interest (USD per day)			336
Foregone Collecting Costs (in USD)			41,667
Litigation settlement expense		3,555,000												3,951,848
Liability for Director and Officer Indemnification Agreements			0
Liability For Customers, Distributors, and Resellers Indemnification Agreements			0
Minimum Number of Lawsuits Filed Against Third-Party Suppliers By Competitor			100
Number of Third-Party Suppliers Filing Declaratory Judgement Actions			2
Loss Contingency, Range of Possible Loss, Maximum									50,000
Loss Contingency, Range of Possible Loss, Minimum									$ 0
period range to file a joint motion to dismiss the case after the Court ruled in the defendants favor								21
Number of years the plaintiff seeks damages for			3
Number of cases the plaintiff asserted			22
Number of cases the plaintiff filed against other companies, including the compapy					9
Number of cases other company filed against the Company				138