XML 36 R23.htm IDEA: XBRL DOCUMENT v3.20.2
Financial Instruments (Tables)
 6 Months Ended
Jun. 30, 2020
Financial Instruments, Owned, at Fair Value [Abstract]  
Estimated Fair Values of Financial Instruments
The following table presents the fair values of financial instruments:
June 30, 2020December 31, 2019
 (Amounts in thousands)
Assets
Investments$4,402,159  $4,312,161  
Note receivable5,697  5,665  
Liabilities
Options sold1,977  77  
Unsecured notes409,050  394,279