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Balance Sheet Components - Accrued Expenses and Other Current Liabilities (Details) - USD ($) $ in Thousands | Dec. 31, 2018 | Dec. 31, 2017
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Accrued Liabilities and Other Liabilities [Abstract] |  |
Accrued compensation and related benefits | $ 9,314 | $ 8,399
Accrued freelancer costs | 2,465 | 134
Accrued indirect taxes | 1,630 | 1,861
Accrued vendor expenses | 6,002 | 4,198
Accrued payment processing fees | 715 | 593
Other | 822 | 845
Total accrued expenses and other current liabilities | $ 20,948 | $ 16,030

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- Definition Total of the carrying values as of the balance sheet date of obligations incurred through that date and payable for obligations related to services received from employees, such as accrued salaries and bonuses, payroll taxes and fringe benefits. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.20) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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