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Cash, Cash Equivalents and Investments - Summary of Fair Values of Cash, Cash Equivalents, and Short-Term Investments Measured at Fair Value on Recurring Basis (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021	Mar. 31, 2021	Dec. 31, 2020
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Total cash and cash equivalents	$ 67,564	$ 69,724	$ 85,315	$ 66,841
Total cash and cash equivalents	67,564	69,724
Short term investments	23,960	37,078
Long term investments	19,175	19,933
Fair Value on Recurring \| Cash
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Total cash and cash equivalents	27,403	40,270
Fair Value on Recurring \| Money Market Funds
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Total cash and cash equivalents	32,361	15,954
Fair Value on Recurring \| Repurchase Agreements
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Total cash and cash equivalents	5,000	13,500
Fair Value on Recurring \| Corporate Notes
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Total cash and cash equivalents	902	0
Short term investments	17,707	25,675
Long term investments	7,809	12,722
Fair Value on Recurring \| Commercial Paper
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Total cash and cash equivalents	1,898	0
Short term investments	997	0
Fair Value on Recurring \| Certificates of Deposit
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Short term investments	2,981	6,928
Long term investments	5,246	4,575
Fair Value on Recurring \| Municipal Notes
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Short term investments	1,172	1,283
Long term investments	534	650
Fair Value on Recurring \| Government and Agency Notes
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Short term investments	1,103	3,192
Long term investments	$ 5,586	$ 1,986