Cash, Cash Equivalents and Marketable Investments - Summary of Cash and Cash Equivalents and Available-for-Sale Securities (Details) - USD ($)	Mar. 31, 2022	Dec. 31, 2021	Mar. 31, 2021	Dec. 31, 2020
Debt Securities, Available-for-sale [Line Items]
Cash and cash equivalents	$ 57,732,000	$ 164,164,000
Restricted cash	700,000	700,000
Cash, cash equivalents, and restricted cash as reported within the Consolidated Statements of Cash Flows	58,432,000	164,864,000	$ 164,932,000	$ 47,047,000
Gross unrealized gains	0
Gross unrealized losses	(11,000)	$ 0
Total amortized cost	132,490,000
Total fair market value	132,479,000
Due in less than one year	74,058,000
Marketable investments - U.S. Treasury
Debt Securities, Available-for-sale [Line Items]
Amortized cost	74,058,000
Gross unrealized gains	0
Gross unrealized losses	(11,000)
Fair market value	$ 74,047,000