XML 51 R41.htm IDEA: XBRL DOCUMENT v3.23.3
Segment Information - Schedule of Segment Reporting Information, by Segment (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2023
Sep. 30, 2022
Sep. 30, 2023
Sep. 30, 2022
Dec. 31, 2022
Segment Reporting Information [Line Items]          
Total Operating Revenues $ 358,056 $ 383,856 $ 1,034,853 $ 1,158,800  
Net Income (Loss) 91,974 84,239 236,424 242,179  
Identifiable Assets 3,187,469   3,187,469   $ 2,901,661
Corporate          
Segment Reporting Information [Line Items]          
Net Income (Loss) 801 (2,809) 488 (9,405)  
Identifiable Assets 249,910   249,910   177,513
Electric | Operating Segments          
Segment Reporting Information [Line Items]          
Total Operating Revenues 130,326 142,747 395,997 404,112  
Net Income (Loss) 24,565 24,847 67,420 62,938  
Identifiable Assets 2,489,682   2,489,682   2,351,961
Manufacturing | Operating Segments          
Segment Reporting Information [Line Items]          
Total Operating Revenues 100,678 98,767 309,936 306,921  
Net Income (Loss) 7,446 6,219 20,276 17,858  
Identifiable Assets 261,044   261,044   245,869
Plastics | Operating Segments          
Segment Reporting Information [Line Items]          
Total Operating Revenues 127,052 142,342 328,920 447,767  
Net Income (Loss) 59,162 $ 55,982 148,240 $ 170,788  
Identifiable Assets $ 186,833   $ 186,833   $ 126,318