Summary of Significant Accounting Policies - Fair Value Measurements (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Assets:
Assets fair value	$ 18,334	$ 58,342
Cash equivalents | Money Market Funds
Assets:
Assets fair value	12,201	29,305
Cash equivalents | Commercial Paper
Assets:
Assets fair value	0	1,000
Short-term Investments | Corporate Debt Securities
Assets:
Assets fair value	3,189	24,352
Short-term Investments | Asset-backed securities
Assets:
Assets fair value	2,944	3,685
Level 1
Assets:
Assets fair value	12,201	29,305
Level 1 | Cash equivalents | Money Market Funds
Assets:
Assets fair value	12,201	29,305
Level 2
Assets:
Assets fair value	6,133	29,037
Level 2 | Cash equivalents | Commercial Paper
Assets:
Assets fair value		1,000
Level 2 | Short-term Investments | Corporate Debt Securities
Assets:
Assets fair value	3,189	24,352
Level 2 | Short-term Investments | Asset-backed securities
Assets:
Assets fair value	$ 2,944	$ 3,685