Balance Sheet Components - Accrued Liabilities (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014	Mar. 31, 2014	Dec. 31, 2012
Balance Sheet Components [Abstract]
Accrued payroll related costs	$ 10,809	$ 30,749
Accrued warranty costs	3,686	3,204	4,655	5,075
Accrued manufacturing costs	2,682anet_AccruedManufacturingCostsCurrent	1,089anet_AccruedManufacturingCostsCurrent
Accrued Professional Fees, Current	6,360us-gaap_AccruedProfessionalFeesCurrent	2,354us-gaap_AccruedProfessionalFeesCurrent
Accrued Income Taxes	1,110us-gaap_AccruedIncomeTaxes	1,577us-gaap_AccruedIncomeTaxes
Other	4,273us-gaap_OtherAccruedLiabilitiesCurrent	1,396us-gaap_OtherAccruedLiabilitiesCurrent
Total accrued liabilities	$ 28,920us-gaap_AccruedLiabilitiesCurrent	$ 40,369us-gaap_AccruedLiabilitiesCurrent

Carrying amount as of the balance sheet date of the unpaid sum of the known and estimated amounts payable to satisfy all domestic and foreign income tax obligations due. This amount is the total of current and noncurrent accrued income taxes.

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Carrying value as of the balance sheet date of obligations incurred through that date and payable for professional fees, such as for legal and accounting services received. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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- Definition

Carrying value as of the balance sheet date of obligations incurred through that date and payable arising from transactions not otherwise specified in the taxonomy. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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- Definition

Carrying value as of the balance sheet date of obligations incurred through that date and payable for estimated claims under standard and extended warranty protection rights granted to customers. For classified balance sheets, represents the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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