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Commitments and Contingencies (Details)
$ in Thousands
 12 Months Ended
Dec. 31, 2024
MMBTU
T
$ / ton
Dec. 31, 2023
USD ($)
T
$ / ton
Dec. 31, 2019
USD ($)
Nov. 01, 2012
T
Disclosure of commitments and contingencies [Abstract]        
Capital commitments, volume       12,100
Capital commitments, term       20 years
Capital commitments, annual minimum       500
Capital commitments, annual maximum       2,400
Capital commitments, quantity received 531 985    
Capital commitments, quantity to be received 4,273 4,804    
Capital commitments excluding taxes and fees (in dollars per ton) | $ / ton 22.27 21.05    
Capital commitments, supply commitment to be paid | $     $ 11,600  
Capital commitments, supply commitment to be paid, term     6 years  
Capital commitments, supply commitment to be paid, annual amount | $     $ 1,935  
Payments for capital commitments | $   $ 8,390    
Capital commitments, quantity to be paid | MMBTU 900,000