Name:	ntgr_EquitySecuritiesWithoutReadilyDeterminableFairValueDownwardPriceChangeAndImpairmentLossCumulativeAmount
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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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- References

No definition available.

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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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-Publisher FASB
-Name Accounting Standards Codification
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Amount of impairment loss resulting from write-down of assets, excluding financial assets and goodwill, lacking physical substance and having a projected indefinite period of benefit to fair value.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
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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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