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Unrealized losses on available-for-sale securities recognized in income.

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The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

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Amount of accumulated unrealized loss on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in unrealized loss position, without allowance for credit loss. Includes beneficial interest in securitized financial asset.

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Amount of cumulative impairment loss on investment in equity security without readily determinable fair value.

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Amount of cumulative gain from upward price adjustment on investment in equity security without readily determinable fair value.

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Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Amount of accumulated impairment loss for an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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The amount of impairment loss recognized in the period resulting from the write-down of the carrying amount of an intangible asset (excluding goodwill) to fair value.

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Amount of loss from reductions in inventory due to subsequent measurement adjustments, including, but not limited to, physical deterioration, obsolescence, or changes in price levels.

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Amount of other-than-temporary impairment (OTTI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), recognized in earnings.

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Balance Sheet Components (Narrative) (Details) - USD ($)	3 Months Ended		12 Months Ended
	Oct. 01, 2023	Apr. 03, 2022	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Balance Sheet Related Disclosures [Line Items]
Investments classified as available-for-sale in continuous unrealized loss position			$ 0	$ 320,000
Unrealized losses on available-for-sale securities			0	0	$ 0
Other-than-temporary impairments			0	0	0
Provisions for excess and obsolete inventory			3,168,000	3,657,000	3,877,000
Amortization expense			300,000	500,000	2,000,000
Intangible assets impairment charges			1,071,000	0	0
Equity securities without readily determinable fair value, cumulative downward adjustments for price change and impairment loss			0
Cumulative upward adjustments for price changes			300,000
Goodwill impairment charges			0	44,442,000	0
Goodwill			36,279,000	36,279,000	80,721,000
Connected Home
Balance Sheet Related Disclosures [Line Items]
Intangible assets impairment charges	$ 1,100,000
Goodwill impairment charges		$ 44,400,000	0	44,442,000	0
Goodwill			0	0	44,442,000
Accumulated goodwill impairment charges			44,400,000
NETGEAR for Business
Balance Sheet Related Disclosures [Line Items]
Goodwill impairment charges			0	0	0
Goodwill			36,279,000	$ 36,279,000	$ 36,279,000
Accumulated goodwill impairment charges			$ 0