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Stockholders' Equity Accumulated Other comprehensive Income (Loss) - Changes in Accumulated Other Comprehensive Loss (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Defined Benefit Plan, Accumulated Other Comprehensive Income (Loss), after Tax [Roll Forward]      
Accumulated other comprehensive loss at beginning of period $ (1,379) $ 1,303  
Other Comprehensive Income (Loss), before Reclassifications, before Tax (959) (229)  
Amounts reclassified from accumulated other comprehensive income/(loss) (400) (2,453)  
Net current-period other comprehensive income/(loss) (1,359) (2,682)  
Accumulated other comprehensive loss at end of period (2,738) (1,379) $ 1,303
AOCI Changes For Defined Benefit Pension And Postretirement Plans [Member]      
Defined Benefit Plan, Accumulated Other Comprehensive Income (Loss), after Tax [Roll Forward]      
Accumulated other comprehensive loss at beginning of period (2,506) (3,268)  
Other Comprehensive Income (Loss), before Reclassifications, before Tax (110) 705  
Amounts reclassified from accumulated other comprehensive income/(loss) 32 57  
Net current-period other comprehensive income/(loss) (78) 762  
Accumulated other comprehensive loss at end of period (2,584) (2,506) (3,268)
Accumulated (Gain) Loss from Commodity Contracts Cash Flows Hedges [Member]      
Defined Benefit Plan, Accumulated Other Comprehensive Income (Loss), after Tax [Roll Forward]      
Accumulated other comprehensive loss at beginning of period 1,092 4,571  
Other Comprehensive Income (Loss), before Reclassifications, before Tax (1,322) (934)  
Amounts reclassified from accumulated other comprehensive income/(loss) (44) (2,545) (4,813)
Net current-period other comprehensive income/(loss) (1,366) (3,479)  
Accumulated other comprehensive loss at end of period (274) 1,092 4,571
Accumulated (Gain) Loss from Interest Rate Swap Cash Flows Hedges      
Defined Benefit Plan, Accumulated Other Comprehensive Income (Loss), after Tax [Roll Forward]      
Accumulated other comprehensive loss at beginning of period 35 0  
Other Comprehensive Income (Loss), before Reclassifications, before Tax 473 0  
Amounts reclassified from accumulated other comprehensive income/(loss) (388) 35  
Net current-period other comprehensive income/(loss) 85 35  
Accumulated other comprehensive loss at end of period $ 120 $ 35 $ 0