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Cash, Cash Equivalents and Investments - Securities Classified as Cash, Cash Equivalents and Investments (Details) - USD ($) $ in Thousands | Mar. 31, 2022 | Dec. 31, 2021
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Cash and cash equivalents: |  |
Cash and cash equivalents, Amortized Cost | $ 47,078 | $ 72,428
Cash and cash equivalents, Gross Unrealized Gains | 0 | 0
Cash and cash equivalents, Gross Unrealized Losses | (1) | 0
Cash and cash equivalents, Fair Value | 47,077 | 72,428
Short-term investments: |  |
Short-term investments, Amortized Cost | 42,714 | 44,267
Short-term investments, Gross Unrealized Gains | 0 | 1
Short-term investments, Gross Unrealized Losses | (87) | (7)
Short-term investments, Fair Value | 42,627 | 44,261
Total cash equivalents and investments, Cost | 89,792 | 116,695
Total cash equivalents and investments, Gross Unrealized Gains | 0 | 1
Total cash equivalents and investments, Gross Unrealized Losses | (88) | (7)
Total cash equivalents and investments, Fair Value | 89,704 | 116,689
Cash |  |
Cash and cash equivalents: |  |
Cash and cash equivalents, Amortized Cost | 7,555 | 1,253
Cash and cash equivalents, Gross Unrealized Gains | 0 | 0
Cash and cash equivalents, Gross Unrealized Losses | 0 | 0
Cash and cash equivalents, Fair Value | 7,555 | 1,253
Money market funds |  |
Cash and cash equivalents: |  |
Cash and cash equivalents, Amortized Cost | 34,524 | 71,175
Cash and cash equivalents, Gross Unrealized Gains | 0 | 0
Cash and cash equivalents, Gross Unrealized Losses | 0 | 0
Cash and cash equivalents, Fair Value | 34,524 | 71,175
Commercial paper |  |
Cash and cash equivalents: |  |
Cash and cash equivalents, Amortized Cost | 4,999 |
Cash and cash equivalents, Gross Unrealized Gains | 0 |
Cash and cash equivalents, Gross Unrealized Losses | (1) |
Cash and cash equivalents, Fair Value | 4,998 |
Commercial paper |  |
Short-term investments: |  |
Short-term investments, Amortized Cost | 28,409 | 31,936
Short-term investments, Gross Unrealized Gains | 0 | 1
Short-term investments, Gross Unrealized Losses | (52) | (2)
Short-term investments, Fair Value | 28,357 | 31,935
U.S. government-sponsored agency bonds |  |
Short-term investments: |  |
Short-term investments, Amortized Cost | 10,777 |
Short-term investments, Gross Unrealized Gains | 0 |
Short-term investments, Gross Unrealized Losses | (22) |
Short-term investments, Fair Value | 10,755 |
Corporate bonds |  |
Short-term investments: |  |
Short-term investments, Amortized Cost | 2,521 | 7,025
Short-term investments, Gross Unrealized Gains | 0 | 0
Short-term investments, Gross Unrealized Losses | (10) | (3)
Short-term investments, Fair Value | 2,511 | 7,022
Asset-backed securities |  |
Short-term investments: |  |
Short-term investments, Amortized Cost | 1,007 | 5,306
Short-term investments, Gross Unrealized Gains | 0 | 0
Short-term investments, Gross Unrealized Losses | (3) | (2)
Short-term investments, Fair Value | $ 1,004 | $ 5,304

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