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Balance Sheet Components (Schedule of Investments Classified as Available-for-Sale in Continuous Unrealized Loss Position) (Details) - USD ($)
$ in Thousands
Mar. 31, 2024
Dec. 31, 2023
Schedule Of Investment Income Reported Amounts By Category [Line Items]    
Estimated Fair Market Value, Less Than 12 Months $ 108,100 $ 98,454
Gross Unrealized Losses, Less Than 12 Months (38) 0
Estimated Fair Market Value, 12 Months or Longer 0 0
Gross Unrealized Losses, 12 Months or Longer 0 0
Estimated Fair Market Value, Total 108,100 98,454
Gross Unrealized Losses, Total (38) 0
U.S. Treasury Securities    
Schedule Of Investment Income Reported Amounts By Category [Line Items]    
Estimated Fair Market Value, Less Than 12 Months 108,100 98,454
Gross Unrealized Losses, Less Than 12 Months (38) 0
Estimated Fair Market Value, 12 Months or Longer 0 0
Gross Unrealized Losses, 12 Months or Longer 0 0
Estimated Fair Market Value, Total 108,100 98,454
Gross Unrealized Losses, Total $ (38) $ 0