Fair Value of Financial Assets and Liabilities - Financial Assets and Liabilities Measured at Fair Value on Recurring Basis (Details) - Recurring - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Assets:
Total assets	$ 165,568	$ 383,226
Money market funds
Assets:
Cash and cash equivalents	29,794	72,866
Other non-current assets	1,875
U.S. treasury bills
Assets:
Cash and cash equivalents	5,000	39,948
Marketable securities	34,762	49,372
U.S. corporate bonds
Assets:
Cash and cash equivalents		9,948
Marketable securities	64,573	132,639
U.S. agency bonds
Assets:
Marketable securities	4,960	41,710
Foreign corporate bonds
Assets:
Marketable securities	24,604	36,743
Level 1
Assets:
Total assets	41,589	72,866
Level 1 | Money market funds
Assets:
Cash and cash equivalents	29,794	72,866
Other non-current assets	1,875
Level 1 | U.S. treasury bills
Assets:
Cash and cash equivalents	0	0
Marketable securities	9,920	0
Level 1 | U.S. corporate bonds
Assets:
Cash and cash equivalents		0
Marketable securities	0	0
Level 1 | U.S. agency bonds
Assets:
Marketable securities	0	0
Level 1 | Foreign corporate bonds
Assets:
Marketable securities	0	0
Level 2
Assets:
Total assets	123,979	310,360
Level 2 | Money market funds
Assets:
Cash and cash equivalents	0	0
Other non-current assets	0
Level 2 | U.S. treasury bills
Assets:
Cash and cash equivalents	5,000	39,948
Marketable securities	24,842	49,372
Level 2 | U.S. corporate bonds
Assets:
Cash and cash equivalents		9,948
Marketable securities	64,573	132,639
Level 2 | U.S. agency bonds
Assets:
Marketable securities	4,960	41,710
Level 2 | Foreign corporate bonds
Assets:
Marketable securities	24,604	36,743
Level 3
Assets:
Total assets	0	0
Level 3 | Money market funds
Assets:
Cash and cash equivalents	0	0
Other non-current assets	0
Level 3 | U.S. treasury bills
Assets:
Cash and cash equivalents	0	0
Marketable securities	0	0
Level 3 | U.S. corporate bonds
Assets:
Cash and cash equivalents		0
Marketable securities	0	0
Level 3 | U.S. agency bonds
Assets:
Marketable securities	0	0
Level 3 | Foreign corporate bonds
Assets:
Marketable securities	$ 0	$ 0