Commitments And Contingencies (Narrative) (Details) (USD $)	1 Months Ended		2 Months Ended		9 Months Ended	12 Months Ended
	Oct. 30, 2013 patent claim claims	Oct. 31, 2008 companies	Dec. 31, 2012	Jul. 03, 2012	Sep. 29, 2013 patent Y case claims	Dec. 31, 2012 supplier patent case	Oct. 31, 2013 patent	May 21, 2013 case	Jan. 03, 2013 case	Sep. 17, 2012 patent	Jul. 31, 2012 patent	May 09, 2012 claims	Mar. 03, 2012 claims	Dec. 28, 2011 case	Nov. 16, 2011 actions patents	Nov. 19, 2010 patent	Sep. 14, 2010 patents
Commitments And Contingencies [Line Items]
Operating leases expiration date					Dec. 31, 2026
Number of days for non-cancellation of purchase obligations prior to expected shipment date (in days)					30 days
Non-cancelable purchase commitments					$ 211,000,000
Continued vesting period after termination without cause (in years)					1 year
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 offensive cases against the company and another company should be consolidated									2
Maximum number of asserted claims in filed status report ( in claims)												10
Number of other companies lawsuit was filed against (in companies)		30
Number of patents company is accused of infringing (in patents)										3	6						8
Number of Remaining Patents Company is Accused of Infringing					5
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
Number of wired claims rejected in the patent (in claims)													5
Number of patents in which company filed judgement action for nonInfringement and invalidity (in patents)															17
Number of actions brought against end user customers and other companies (in actions)															15
number of other similar cases will now proceed in the Northern District of Illinois in a consolidated fashion														15
Length of trial period (in days)			10 days	10 days
Financial Impact to the Company					0
Number of patents company filed suit for infringement of (in patents)																4
Number of standing patents the company has filed against other companies	2
Number of claims remaining standing that the Company has filed against other companies	5
Number of patents a jury rendered a verdit that were not infringed by other companies that the company filed against							2
Number of claims that a jury issued a verdict that were not infringed by other companies that the Comapany filed against							5
Litigation settlement expense					3,555,000
Liability for Director and Officer Indemnification Agreements					0
Liability For Customers, Distributors, and Resellers Indemnification Agreements					0
Number of patents the Company brought its declaratory judgment actotion on non-infringement and invalidity											17
Minimum Number of Lawsuits Filed Against Third-Party Suppliers By Competitor						100
Number of Third-Party Suppliers Filing Declaratory Judgement Actions						2
Number of Three Asserted Patents with Pending Reexamination						1
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
Minimum [Member]
Commitments And Contingencies [Line Items]
Patent rate valued by the plaintiff against the Company					3.39
Minimum [Member] | 46 To 60 Days [Member]
Commitments And Contingencies [Line Items]
Required notice period prior to the expected shipment date (in days)					46 days
Minimum [Member] | 31 To 45 Days [Member]
Commitments And Contingencies [Line Items]
Required notice period prior to the expected shipment date (in days)					31 days
Maximum [Member]
Commitments And Contingencies [Line Items]
Patent rate valued by the plaintiff against the Company					16.17
Maximum [Member] | 46 To 60 Days [Member]
Commitments And Contingencies [Line Items]
Required notice period prior to the expected shipment date (in days)					60 days
Maximum [Member] | 31 To 45 Days [Member]
Commitments And Contingencies [Line Items]
Required notice period prior to the expected shipment date (in days)					45 days
Chief Executive Officer [Member]
Commitments And Contingencies [Line Items]
Number of weeks for which salary is payable upon termination of employment without cause (in days)					365 days
Number of years after change of control to trigger full accelerated vest of unvested portion of stock options (in years)					1 year
Senior Vice President Of Worldwide Operations And Support [Member]
Commitments And Contingencies [Line Items]
Number of weeks for which salary is payable upon termination of employment without cause (in days)					273 days
Other Key Executives [Member]
Commitments And Contingencies [Line Items]
Number of weeks for which salary is payable upon termination of employment without cause (in days)					182 days
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
D-Link [Member] | Ericsson v. NETGEAR [Member]
Commitments And Contingencies [Line Items]
Loss Contingency, Damages Awarded, Value					435,000
NETGEAR [Member] | Ericsson v. NETGEAR [Member]
Commitments And Contingencies [Line Items]
Loss Contingency, Damages Awarded, Value					3,555,000
Toshiba [Member] | Ericsson v. NETGEAR [Member]
Commitments And Contingencies [Line Items]
Loss Contingency, Damages Awarded, Value					2,445,000
Belkin [Member] | Ericsson v. NETGEAR [Member]
Commitments And Contingencies [Line Items]
Loss Contingency, Damages Awarded, Value					600,000
Acer Gateway [Member] | Ericsson v. NETGEAR [Member]
Commitments And Contingencies [Line Items]
Loss Contingency, Damages Awarded, Value					1,170,000
Dell [Member] | Ericsson v. NETGEAR [Member]
Commitments And Contingencies [Line Items]
Loss Contingency, Damages Awarded, Value					$ 1,920,000
31 To 45 Days [Member]
Commitments And Contingencies [Line Items]
Percentage of cancelable orders					25.00%
46 To 60 Days [Member]
Commitments And Contingencies [Line Items]
Percentage of cancelable orders					50.00%