Financial Instruments and Fair Value Measurements - Measurements on Recurring Basis (Details) - Recurring basis - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Financial instruments and fair value measurements
Cash equivalents	$ 61,185
Total		$ 59,809
Money market fund
Financial instruments and fair value measurements
Cash equivalents	1,383	19,233
U.S. Treasury Bills
Financial instruments and fair value measurements
Cash equivalents	59,802
Investments - debt securities		40,576
Level 1
Financial instruments and fair value measurements
Cash equivalents	61,185
Total		59,809
Level 1 | Money market fund
Financial instruments and fair value measurements
Cash equivalents	1,383	19,233
Level 1 | U.S. Treasury Bills
Financial instruments and fair value measurements
Cash equivalents	$ 59,802
Investments - debt securities		$ 40,576