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v3.20.2

Fair Value Measurements - Summary of Investments Classified as Available-For-Sale (Details) - USD ($) $ in Thousands | 9 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2020 | Dec. 31, 2019
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost | $ 91,957 | $ 138,832
Gross Unrealized Gains | 72 | 222
Gross Unrealized Losses | (7) | (9)
Fair Value | $ 92,022 | $ 139,045
Minimum |  |
Debt Securities, Available-for-sale [Line Items] |  |
Remaining maturity | 1 month | 3 months
Maximum |  |
Debt Securities, Available-for-sale [Line Items] |  |
Remaining maturity | 19 months | 2 years
U.S. government agencies |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost | $ 32,984 | $ 36,880
Gross Unrealized Gains | 3 | 99
Gross Unrealized Losses | 0 | 0
Fair Value | 32,987 | 36,979
Commercial paper |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost | 32,252 | 19,965
Gross Unrealized Gains | 0 | 1
Gross Unrealized Losses | 0 | 0
Fair Value | 32,252 | 19,966
Corporate bonds |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost | 20,287 | 60,803
Gross Unrealized Gains | 69 | 77
Gross Unrealized Losses | (7) | (2)
Fair Value | 20,349 | 60,878
Agency bonds |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost | 3,998 | 12,198
Gross Unrealized Gains | 0 | 44
Gross Unrealized Losses | 0 | 0
Fair Value | 3,998 | 12,242
Asset-backed securities |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost | 2,436 | 8,986
Gross Unrealized Gains | 0 | 1
Gross Unrealized Losses | 0 | (7)
Fair Value | $ 2,436 | $ 8,980

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