XML 77 R65.htm IDEA: XBRL DOCUMENT v3.24.3
Fair Value Measurements (Assets and Liabilities Measured at Fair Value on Recurring Basis) (Details) - USD ($)
$ in Thousands
 9 Months Ended
Sep. 30, 2024
Dec. 31, 2023
Assets:    
Cash and cash equivalents maturity period (maximum) 3 months  
Fair value measured on a recurring basis    
Assets:    
Cash and cash equivalents $ 287,403 $ 380,564
Restricted cash 13,994 14,116
Restricted investments 135,493 130,287
Investments in lieu of retention 135,128 106,949
Total 572,018 631,916
Fair value measured on a recurring basis | Level 1    
Assets:    
Cash and cash equivalents 287,403 380,564
Restricted cash 13,994 14,116
Restricted investments 0 0
Investments in lieu of retention 37,295 19,988
Total 338,692 414,668
Fair value measured on a recurring basis | Level 1 | Money Market Funds    
Assets:    
Investments in lieu of retention 37,300 20,000
Fair value measured on a recurring basis | Level 2    
Assets:    
Cash and cash equivalents 0 0
Restricted cash 0 0
Restricted investments 135,493 130,287
Investments in lieu of retention 97,833 86,961
Total 233,326 217,248
Fair value measured on a recurring basis | Level 2 | Debt Securities    
Assets:    
Investments in lieu of retention 97,800 87,000
Fair value measured on a recurring basis | Level 3    
Assets:    
Cash and cash equivalents 0 0
Restricted cash 0 0
Restricted investments 0 0
Investments in lieu of retention 0 0
Total $ 0 $ 0