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Investments - Investments in a continual unrealized loss position (Details) - USD ($)
$ in Thousands
Sep. 30, 2022
Dec. 31, 2021
Debt Securities, Available-for-Sale [Line Items]    
Total available-for-sale securities $ 41,933 $ 64,109
Continuous unrealized loss position, 12 months or longer 16,499 0
Corporate Bonds [Member]    
Debt Securities, Available-for-Sale [Line Items]    
Total available-for-sale securities 15,425 60,114
Continuous unrealized loss position, 12 months or longer 12,589 0
US Government Debt Securities [Member]    
Debt Securities, Available-for-Sale [Line Items]    
Total available-for-sale securities 26,508 0
Continuous unrealized loss position, 12 months or longer 3,910 0
Commercial Paper [Member]    
Debt Securities, Available-for-Sale [Line Items]    
Total available-for-sale securities $ 0 $ 3,995