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Fair Value Measurements - Summary of Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail) - USD ($) $ in Thousands | Jun. 30, 2023 | Dec. 31, 2022
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Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Cash and cash equivalents | $ 119,017 | $ 210,518
Level 1 [Member] | Fair Value, Recurring [Member] | Money Market Funds [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Cash and cash equivalents | 117,985 | 209,273
Estimated Fair Value | 117,985 | 209,273
Level 2 [Member] | Fair Value, Recurring [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
U.S. Treasury securities, Gross unrealized gains | 1 | 407
Gross unrealized losses | (181) |
Level 2 [Member] | Fair Value, Recurring [Member] | U.S. Treasury Securities [Member] | Short-Term Investments [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
U.S. Treasury securities, Amortized Cost | 133,371 | 63,456
U.S. Treasury securities, Gross unrealized gains | 1 | 407
Gross unrealized losses | (181) |
U.S. Treasury securities, Fair Value | 133,191 | 63,863
Level 1 And Level 2 [Member] | Fair Value, Recurring [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Total Amortized Cost | 251,356 | 272,729
Total Fair Value | $ 251,176 | $ 273,136

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