Annual report pursuant to Section 13 and 15(d)

Summary of Significant Accounting Policies - Summary of Fair Value Assets Measured on Recurring Basis for Cash, Cash Equivalents and Marketable Securities (Details)

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Summary of Significant Accounting Policies - Summary of Fair Value Assets Measured on Recurring Basis for Cash, Cash Equivalents and Marketable Securities (Details) - USD ($)
$ in Thousands
Dec. 31, 2021
Dec. 31, 2020
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Cash and cash equivalents $ 235,524 $ 211,962
Fair Value Measurements Recurring    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Adjusted cost 245,512 231,219
Gross unrealized gains (losses) 1  
Fair value 245,513 231,219
Cash and cash equivalents 235,524 211,962
Marketable securities 9,989 19,257
Fair Value Measurements Recurring | Cash    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Adjusted cost 48,817 52,812
Fair value 48,817 52,812
Cash and cash equivalents 48,817 52,812
Fair Value Measurements Recurring | Level 1 | Money Market Accounts    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Adjusted cost 186,707 159,150
Fair value 186,707 159,150
Cash and cash equivalents 186,707 159,150
Fair Value Measurements Recurring | Level 2 | Corporate Bonds    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Adjusted cost 9,988 11,549
Gross unrealized gains (losses) 1 (1)
Fair value 9,989 11,548
Marketable securities $ 9,989 11,548
Fair Value Measurements Recurring | Level 2 | US Treasury Securities    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Adjusted cost   4,107
Fair value   4,107
Marketable securities   4,107
Fair Value Measurements Recurring | Level 2 | Agency Mortgage-backed Securities    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Adjusted cost   3,601
Gross unrealized gains (losses)   1
Fair value   3,602
Marketable securities   $ 3,602