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Balance Sheet Components - Summary of Cash, Cash Equivalents and Short-term Investments (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Cash and cash equivalents
Cash	$ 46,137	$ 51,560
Money market accounts	167,847	146,477
Total cash and cash equivalents	213,984	198,037
Marketable securities
Marketable securities	6,525	11,057
Corporate Bonds
Marketable securities
Marketable securities	$ 6,525	2,013
U.S. Treasury Securities
Marketable securities
Marketable securities		$ 9,044

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Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), classified as current.

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