Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measurements - Schedule of Debt Securities Classified as Available-for-Sale Investments (Details)

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Fair Value Measurements - Schedule of Debt Securities Classified as Available-for-Sale Investments (Details) - USD ($)
$ in Thousands
Jun. 30, 2021
Dec. 31, 2020
Schedule Of Available For Sale Securities [Line Items]    
Amortized Cost $ 102,807 $ 108,656
Gross Unrealized Gains 1 6
Fair value 102,808 108,662
Money Market Funds Included in Cash and Cash Equivalents    
Schedule Of Available For Sale Securities [Line Items]    
Amortized Cost 99,495 101,429
Fair value 99,495 101,429
Corporate Bonds - due in One Year or Less    
Schedule Of Available For Sale Securities [Line Items]    
Amortized Cost 3,312 7,227
Gross Unrealized Gains 1 6
Fair value $ 3,313 $ 7,233