Investments - Cash, Cash Equivalents and Investments (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Cash and cash equivalents:
Amortized Cost	$ 54,093	$ 37,187
Gross unrealized gains	0	0
Gross unrealized losses	0	0
Fair Value	54,093	37,187
Investments:
Amortized Cost	119,174	102,740
Gross unrealized gains	0	0
Gross unrealized losses	(803)	(126)
Fair Value	118,371	102,614
Total cash, cash equivalents and investments, Amortized Cost	173,267	139,927
Total cash, cash equivalents and investments, Gross Unrealized Gains	0	0
Total cash, cash equivalents and investments, Gross Unrealized Losses	(803)	(126)
Total cash, cash equivalents and investments, fair value	172,464	139,801
Cash and cash equivalents
Cash and cash equivalents:
Amortized Cost	54,093	37,187
Gross unrealized gains	0	0
Gross unrealized losses	0	0
Fair Value	54,093	37,187
Certificates of deposit (due within 1 year)
Investments:
Amortized Cost	1,500	9,047
Gross unrealized gains	0	0
Gross unrealized losses	(1)	(9)
Fair Value	1,499	9,038
Commercial paper (due within 1 year)
Investments:
Amortized Cost	49,174	50,975
Gross unrealized gains	0	0
Gross unrealized losses	(251)	(55)
Fair Value	48,923	50,920
Corporate bonds (due within 1 year)
Investments:
Amortized Cost	21,240	42,718
Gross unrealized gains	0	0
Gross unrealized losses	(241)	(62)
Fair Value	20,999	$ 42,656
U.S. Government and government agencies (due within 1 year)
Investments:
Amortized Cost	47,260
Gross unrealized gains	0
Gross unrealized losses	(310)
Fair Value	$ 46,950