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Investments and Fair Value Measurements - Convertible senior notes (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2023
Mar. 31, 2022
Maturity period for marketable securities    
Maximum contractual maturity period 15 months  
Weighted average contractual maturity period 3 months  
Unrealized losses    
Net unrealized losses $ 0  
Available-for-sale securities sold 62,900 $ 0
Realized gain $ 200