Fair Value of Financial Instruments - Financial assets and liabilities (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2022	Dec. 31, 2021
Maximum
Company's financial assets and liabilities subject to fair value measurements on a recurring basis
Remaining contractual maturity of marketable securities (in years)	2 years	2 years
Recurring basis
Assets
Total assets	$ 76,711	$ 143,580
Recurring basis | Cash, cash equivalents and money market funds
Assets
Total assets	9,890	90,251
Recurring basis | Certificates of deposit
Assets
Total assets	924	1,672
Recurring basis | Corporate debt securities
Assets
Total assets	2,981	6,089
Recurring basis | U.S. Treasury securities
Assets
Total assets	62,916	45,568
Recurring basis | Level 1
Assets
Total assets	73,730	137,491
Recurring basis | Level 1 | Cash, cash equivalents and money market funds
Assets
Total assets	9,890	90,251
Recurring basis | Level 1 | Certificates of deposit
Assets
Total assets	924	1,672
Recurring basis | Level 1 | Corporate debt securities
Assets
Total assets	0	0
Recurring basis | Level 1 | U.S. Treasury securities
Assets
Total assets	62,916	45,568
Recurring basis | Level 2
Assets
Total assets	2,981	6,089
Recurring basis | Level 2 | Cash, cash equivalents and money market funds
Assets
Total assets	0	0
Recurring basis | Level 2 | Certificates of deposit
Assets
Total assets	0	0
Recurring basis | Level 2 | Corporate debt securities
Assets
Total assets	2,981	6,089
Recurring basis | Level 2 | U.S. Treasury securities
Assets
Total assets	0	0
Recurring basis | Level 3
Assets
Total assets	0	0
Recurring basis | Level 3 | Cash, cash equivalents and money market funds
Assets
Total assets	0	0
Recurring basis | Level 3 | Certificates of deposit
Assets
Total assets	0	0
Recurring basis | Level 3 | Corporate debt securities
Assets
Total assets	0	0
Recurring basis | Level 3 | U.S. Treasury securities
Assets
Total assets	$ 0	$ 0