v3.25.2
SUPPLEMENTAL STOCKHOLDERS’ EQUITY INFORMATION - Changes in Accumulated Other Comprehensive Income (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Accumulated Other Comprehensive Income (Loss) [Roll Forward]        
Balance, beginning of period     $ 1,927,209  
Other comprehensive (loss)/income before reclassifications, before tax     (1,182)  
Amounts reclassified from accumulated other comprehensive loss, before tax     8,811  
Income tax (benefit)/expense $ (76) $ 722 2,004 $ 952
Other comprehensive (loss)/income, net of tax (209) 2,047 5,625 2,550
Balance, end of period 1,935,708   1,935,708  
Foreign Currency Translation Adjustments        
Accumulated Other Comprehensive Income (Loss) [Roll Forward]        
Balance, beginning of period     (2,762)  
Other comprehensive (loss)/income before reclassifications, before tax     (2,362)  
Amounts reclassified from accumulated other comprehensive loss, before tax     0  
Income tax (benefit)/expense     (620)  
Other comprehensive (loss)/income, net of tax     (1,742)  
Balance, end of period (4,504)   (4,504)  
Funded Status of Benefit Plans        
Accumulated Other Comprehensive Income (Loss) [Roll Forward]        
Balance, beginning of period     (363,874)  
Other comprehensive (loss)/income before reclassifications, before tax     0  
Amounts reclassified from accumulated other comprehensive loss, before tax     8,811  
Income tax (benefit)/expense     2,315  
Other comprehensive (loss)/income, net of tax     6,496  
Balance, end of period (357,378)   (357,378)  
Net Unrealized Gain on Available-For-Sale Securities        
Accumulated Other Comprehensive Income (Loss) [Roll Forward]        
Balance, beginning of period     830  
Other comprehensive (loss)/income before reclassifications, before tax     1,180  
Amounts reclassified from accumulated other comprehensive loss, before tax     0  
Income tax (benefit)/expense     309  
Other comprehensive (loss)/income, net of tax     871  
Balance, end of period 1,701   1,701  
Total Accumulated Other Comprehensive Loss        
Accumulated Other Comprehensive Income (Loss) [Roll Forward]        
Balance, beginning of period (359,972) (352,359) (365,806) (352,862)
Other comprehensive (loss)/income, net of tax (209) 2,047 5,625 2,550
Balance, end of period $ (360,181) $ (350,312) $ (360,181) $ (350,312)