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Financial Statement Components - Accounts Receivable, Net of Allowance for Doubtful Accounts (Details) - USD ($) $ in Thousands | Mar. 31, 2021 | Dec. 31, 2020
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Financial Statement Components [Abstract] |  |
Trade accounts receivable | $ 22,591 | $ 26,504
Unbilled accounts receivable | 28,490 | 27,692
Allowance for doubtful accounts and reserve for expected credit losses | (1,218) | (1,203)
Other accounts receivable | 1,595 | 2,250
Total accounts receivable, net | $ 51,458 | $ 55,243

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