Fair Value Measurements (Details) - Assets and liabilities measured on a recurring basis - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Cash equivalents
Total Cash equivalents	$ 41,665	$ 86,165
Short-term investments
Total Short-term investments	104,181	189,771
U.S. treasuries
Short-term investments
Total Short-term investments	51,095	149,219
Government agency securities
Short-term investments
Total Short-term investments	12,052
Corporate debt
Short-term investments
Total Short-term investments	40,035	32,554
Commercial paper
Short-term investments
Total Short-term investments	999	7,998
Certificate of deposits and time deposits
Cash equivalents
Total Cash equivalents	41,544	59,168
Commercial paper
Cash equivalents
Total Cash equivalents		2,000
U.S. treasuries
Cash equivalents
Total Cash equivalents		24,997
Money market cash
Cash equivalents
Total Cash equivalents	121
Level 1
Cash equivalents
Total Cash equivalents	41,665	84,165
Short-term investments
Total Short-term investments	51,095	149,219
Level 1 | U.S. treasuries
Short-term investments
Total Short-term investments	51,095	149,219
Level 1 | Certificate of deposits and time deposits
Cash equivalents
Total Cash equivalents	41,544	59,168
Level 1 | U.S. treasuries
Cash equivalents
Total Cash equivalents		24,997
Level 1 | Money market cash
Cash equivalents
Total Cash equivalents	121
Level 2
Cash equivalents
Total Cash equivalents		2,000
Short-term investments
Total Short-term investments	53,086	40,552
Level 2 | Government agency securities
Short-term investments
Total Short-term investments	12,052
Level 2 | Corporate debt
Short-term investments
Total Short-term investments	40,035	32,554
Level 2 | Commercial paper
Short-term investments
Total Short-term investments	$ 999	7,998
Level 2 | Commercial paper
Cash equivalents
Total Cash equivalents		$ 2,000