XML 40 R30.htm IDEA: XBRL DOCUMENT v3.22.2
Investments (Details) - USD ($)
3 Months Ended 6 Months Ended
Jun. 30, 2022
Jun. 30, 2021
Jun. 30, 2022
Jun. 30, 2021
Dec. 31, 2021
Schedule Of Available For Sale Securities [Line Items]          
Available-for-sale securities, impairment $ 0     $ 0  
Available-for-sale securities, realized gains (losses) on sales   $ 0 $ 0    
Available-for-sale securities, recognition of expected credit losses 0 $ 0 0 $ 0  
Prepaid Expenses And Other Assets          
Schedule Of Available For Sale Securities [Line Items]          
Accured Interest on investments $ 1,000.0   $ 1,000.0   $ 1,100,000
Treasuries, Non-U.S. Government Securities, Municipal Securities, Corporate Debt Securities and Commercial Paper          
Schedule Of Available For Sale Securities [Line Items]          
Short term investments, maturity start range     3 months    
Short term investments, maturity end range     36 months