XML 100 R84.htm IDEA: XBRL DOCUMENT v3.20.4
Fair Value Measurements (Assets and Liabilities Measured at Fair Value on a Recurring Basis Using Level 3 Inputs) (Details) - Significant Unobservable Inputs (Level 3) - Fair Value, Measurements, Recurring - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Beginning balance $ 79,365 $ 46,186
Total realized and unrealized losses    
Total foreign exchange gains 10 5
Purchases 18,950 13,405
Sales (10,137)  
Settlements (5,739) 20
Amounts acquired   19,970
Ending balance 73,596 79,365
Other income (loss)    
Total realized and unrealized losses    
Included in other income (3,191) (2,347)
Net realized and unrealized (losses) gains on investments    
Total realized and unrealized losses    
Included in other income (5,662) 2,126
Other Investments    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Beginning balance 74,634 54,545
Total realized and unrealized losses    
Total foreign exchange gains 10 5
Purchases 20,962 17,958
Sales (10,137)  
Settlements 0 0
Amounts acquired   0
Ending balance 79,807 74,634
Other Investments | Other income (loss)    
Total realized and unrealized losses    
Included in other income 0 0
Other Investments | Net realized and unrealized (losses) gains on investments    
Total realized and unrealized losses    
Included in other income (5,662) 2,126
Other Assets and (Liabilities)    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Beginning balance 4,731 (8,359)
Total realized and unrealized losses    
Total foreign exchange gains 0 0
Purchases (2,012) (4,553)
Sales 0  
Settlements (5,739) 20
Amounts acquired   19,970
Ending balance (6,211) 4,731
Other Assets and (Liabilities) | Other income (loss)    
Total realized and unrealized losses    
Included in other income (3,191) (2,347)
Other Assets and (Liabilities) | Net realized and unrealized (losses) gains on investments    
Total realized and unrealized losses    
Included in other income $ 0 $ 0