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Investments and Fair Value Measurements - Convertible senior notes (Details)
$ in Thousands
6 Months Ended
Jun. 30, 2022
USD ($)
Maturity period for marketable securities  
Maximum contractual maturity period 6 months
Weighted average contractual maturity period 4 months
Fair value transfers  
Fair value of assets transferred from Level 1 to Level 2 $ 0
Fair value of assets transferred from Level 2 to Level 1 0
Unrealized losses  
Net unrealized losses $ 0