Fair Value Measurements - Fair Value of Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Assets:
Marketable securities	$ 42,502
U.S. Government agency bonds
Assets:
Marketable securities	20,481
Corporate bonds
Assets:
Marketable securities	2,914
Recurring Basis
Assets:
Cash equivalents	7,241	$ 10,533
Marketable securities	42,502
Total financial assets	49,743	10,533
Recurring Basis | U.S. Government agency bonds
Assets:
Marketable securities	20,481
Recurring Basis | Commercial paper
Assets:
Marketable securities	19,107
Recurring Basis | Corporate bonds
Assets:
Marketable securities	2,914
Level 1 | Recurring Basis
Assets:
Cash equivalents	831	10,533
Marketable securities	14,977
Total financial assets	15,808	10,533
Level 1 | Recurring Basis | U.S. Government agency bonds
Assets:
Marketable securities	14,977
Level 1 | Recurring Basis | Commercial paper
Assets:
Marketable securities	0
Level 1 | Recurring Basis | Corporate bonds
Assets:
Marketable securities	0
Level 2 | Recurring Basis
Assets:
Cash equivalents	6,410	0
Marketable securities	27,525
Total financial assets	33,935	0
Level 2 | Recurring Basis | U.S. Government agency bonds
Assets:
Marketable securities	5,504
Level 2 | Recurring Basis | Commercial paper
Assets:
Marketable securities	19,107
Level 2 | Recurring Basis | Corporate bonds
Assets:
Marketable securities	2,914
Level 3 | Recurring Basis
Assets:
Cash equivalents	0	0
Marketable securities	0
Total financial assets	0	0
Level 3 | Recurring Basis | U.S. Government agency bonds
Assets:
Marketable securities	0
Level 3 | Recurring Basis | Commercial paper
Assets:
Marketable securities	0
Level 3 | Recurring Basis | Corporate bonds
Assets:
Marketable securities	0
Money market funds | Recurring Basis
Assets:
Cash equivalents	831	10,533
Money market funds | Level 1 | Recurring Basis
Assets:
Cash equivalents	831	10,533
Money market funds | Level 2 | Recurring Basis
Assets:
Cash equivalents	0	0
Money market funds | Level 3 | Recurring Basis
Assets:
Cash equivalents	0	$ 0
Commercial paper | Recurring Basis
Assets:
Cash equivalents	2,000
Commercial paper | Level 1 | Recurring Basis
Assets:
Cash equivalents	0
Commercial paper | Level 2 | Recurring Basis
Assets:
Cash equivalents	2,000
Commercial paper | Level 3 | Recurring Basis
Assets:
Cash equivalents	0
Corporate bonds | Recurring Basis
Assets:
Cash equivalents	4,410
Corporate bonds | Level 1 | Recurring Basis
Assets:
Cash equivalents	0
Corporate bonds | Level 2 | Recurring Basis
Assets:
Cash equivalents	4,410
Corporate bonds | Level 3 | Recurring Basis
Assets:
Cash equivalents	$ 0