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8. Other Income and Expenses (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Interest and investment income $ (32,200) $ (18,300)
Net realized (gain) loss on investments 0 100
Other Nonoperating Expense 400 200
Equity Method Investment, Other than Temporary Impairment 0 800
Other (income) expense, net $ (32,597) $ (17,407)