v3.26.1
ACCUMULATED OTHER COMPREHENSIVE LOSS (Changes in Components of AOCI, Net of Related Taxes) (Details) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Accumulated Other Comprehensive Income (Loss) [Line Items]    
Balance, beginning $ 2,020,277 $ 1,856,048
Balance, ending 2,194,275 1,868,849
Accumulated Other Comprehensive Loss    
Accumulated Other Comprehensive Income (Loss) [Line Items]    
Balance, beginning (10,840) (7,861)
Current period change, excluding amounts reclassified from accumulated other comprehensive income/(loss) (165) (605)
Amounts reclassified from accumulated other comprehensive income/(loss) (210) (348)
Balance, ending (11,215) (8,814)
Unrealized gains on cash flow hedges    
Accumulated Other Comprehensive Income (Loss) [Line Items]    
Balance, beginning 2,093 5,176
Current period change, excluding amounts reclassified from accumulated other comprehensive income/(loss) 132 (181)
Amounts reclassified from accumulated other comprehensive income/(loss) (475) (596)
Balance, ending 1,750 4,399
Items not yet recognized as a component of net periodic benefit cost    
Accumulated Other Comprehensive Income (Loss) [Line Items]    
Balance, beginning (12,933) (13,037)
Current period change, excluding amounts reclassified from accumulated other comprehensive income/(loss) (45) (424)
Amounts reclassified from accumulated other comprehensive income/(loss) 265 248
Balance, ending (12,713) $ (13,213)
Foreign currency translation adjustment    
Accumulated Other Comprehensive Income (Loss) [Line Items]    
Current period change, excluding amounts reclassified from accumulated other comprehensive income/(loss) (252)  
Balance, ending $ (252)