Cash, Cash Equivalents and Investments - Securities Classified as Cash, Cash Equivalents and Investments (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Cash and cash equivalents:
Cash and cash equivalents, Amortized Cost	$ 47,078	$ 72,428
Cash and cash equivalents, Gross Unrealized Gains	0	0
Cash and cash equivalents, Gross Unrealized Losses	(1)	0
Cash and cash equivalents, Fair Value	47,077	72,428
Short-term investments:
Short-term investments, Amortized Cost	42,714	44,267
Short-term investments, Gross Unrealized Gains	0	1
Short-term investments, Gross Unrealized Losses	(87)	(7)
Short-term investments, Fair Value	42,627	44,261
Total cash equivalents and investments, Cost	89,792	116,695
Total cash equivalents and investments, Gross Unrealized Gains	0	1
Total cash equivalents and investments, Gross Unrealized Losses	(88)	(7)
Total cash equivalents and investments, Fair Value	89,704	116,689
Cash
Cash and cash equivalents:
Cash and cash equivalents, Amortized Cost	7,555	1,253
Cash and cash equivalents, Gross Unrealized Gains	0	0
Cash and cash equivalents, Gross Unrealized Losses	0	0
Cash and cash equivalents, Fair Value	7,555	1,253
Money market funds
Cash and cash equivalents:
Cash and cash equivalents, Amortized Cost	34,524	71,175
Cash and cash equivalents, Gross Unrealized Gains	0	0
Cash and cash equivalents, Gross Unrealized Losses	0	0
Cash and cash equivalents, Fair Value	34,524	71,175
Commercial paper
Cash and cash equivalents:
Cash and cash equivalents, Amortized Cost	4,999
Cash and cash equivalents, Gross Unrealized Gains	0
Cash and cash equivalents, Gross Unrealized Losses	(1)
Cash and cash equivalents, Fair Value	4,998
Commercial paper
Short-term investments:
Short-term investments, Amortized Cost	28,409	31,936
Short-term investments, Gross Unrealized Gains	0	1
Short-term investments, Gross Unrealized Losses	(52)	(2)
Short-term investments, Fair Value	28,357	31,935
U.S. government-sponsored agency bonds
Short-term investments:
Short-term investments, Amortized Cost	10,777
Short-term investments, Gross Unrealized Gains	0
Short-term investments, Gross Unrealized Losses	(22)
Short-term investments, Fair Value	10,755
Corporate bonds
Short-term investments:
Short-term investments, Amortized Cost	2,521	7,025
Short-term investments, Gross Unrealized Gains	0	0
Short-term investments, Gross Unrealized Losses	(10)	(3)
Short-term investments, Fair Value	2,511	7,022
Asset-backed securities
Short-term investments:
Short-term investments, Amortized Cost	1,007	5,306
Short-term investments, Gross Unrealized Gains	0	0
Short-term investments, Gross Unrealized Losses	(3)	(2)
Short-term investments, Fair Value	$ 1,004	$ 5,304