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Commitments (Tables)
 12 Months Ended
Dec. 31, 2022
Commitments and Contingencies Disclosure [Abstract]  
Schedule of minimum required payments for unconditional purchase obligations
The minimum required payments for unconditional purchase obligations, including the natural gas purchases outlined below, are as follows:
(in thousands)
Unconditional
Purchase 
Obligations
Year Ending December 31,
2023$56,364 
202415,881 
202515,347 
202615,047 
202715,047 
Thereafter32,703 
$150,389