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Consolidated Statements of Comprehensive Income - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2023
Sep. 30, 2022
Sep. 30, 2023
Sep. 30, 2022
Statement of Comprehensive Income [Abstract]        
Net Income (Loss) $ 21,381 $ (427,072) $ 1,206,731 $ (1,316,657)
Other Comprehensive Income:        
Actuarially Determined Long-Term Liability Adjustments (Net of tax: $(27), $(48),$(81), $(144)) 72 135 216 405
Comprehensive Income (Loss) $ 21,453 $ (426,937) $ 1,206,947 $ (1,316,252)