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Cash and Investments - Narrative (Details)
Sep. 30, 2022
USD ($)
bond
investment
Dec. 31, 2021
USD ($)
investment
Oct. 01, 2021
USD ($)
Debt Securities, Available-for-sale [Line Items]      
Interest receivable $ 4,800,000 $ 2,900,000  
Number of investments in an unrealized loss position | investment 276 133  
Debt securities, available-for-sale, continuous unrealized loss position, 12 months or longer $ 64,000,000    
Accumulated loss 2,400,000    
Allowance for credit losses $ 0   $ 0
Corporate bonds      
Debt Securities, Available-for-sale [Line Items]      
Number of bond securities | bond 25    
Municipal bonds      
Debt Securities, Available-for-sale [Line Items]      
Number of bond securities | bond 1