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Financial Instruments - Interest Rate Swaps (Details)
$ in Thousands
Jun. 30, 2022
USD ($)
MMBTU
$ / MMBTU
Dec. 31, 2021
USD ($)
Minimum    
Derivative [Line Items]    
Price | $ / MMBTU 23.25  
Maximum    
Derivative [Line Items]    
Price | $ / MMBTU 27.50  
Interest Rate Swap | Cash Flow Hedging | Designated as Hedging Instrument    
Derivative [Line Items]    
Notional value $ 550,000  
Interest Rate Swap | Cash Flow Hedging | Minimum | Designated as Hedging Instrument | LIBOR    
Derivative [Line Items]    
Fixed interest rates 1.69%  
Interest Rate Swap | Cash Flow Hedging | Maximum | Designated as Hedging Instrument | LIBOR    
Derivative [Line Items]    
Fixed interest rates 2.37%  
Commodity Swap    
Derivative [Line Items]    
Notional quantity | MMBTU 806,502  
Commodity Contract    
Derivative [Line Items]    
Asset derivatives, Gross amounts presented in consolidated balance sheet $ 0 $ 1,753
Asset derivatives, Gross amounts not offset in consolidated balance sheet subject to netting agreements 0 (88)
Asset derivatives, Net amount 0 1,665
Liability derivatives, Gross amounts presented in consolidated balance sheet (12,653) (88)
Liability derivatives, Gross amounts not offset in consolidated balance sheet subject to netting agreements 0 88
Liability derivatives, Net amount $ (12,653) $ 0