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Long-term Debt (Tables)
 12 Months Ended
Dec. 31, 2023
Debt Disclosure [Abstract]  
Schedule of Long-term Debt Instruments
 December 31,
 20232022
Debt:  
MEDCO Revenue Bonds in Series due September 2025 at 5.75%
$102,865 $102,865 
9.00% PEDFA Solid Waste Disposal Revenue Bonds due April 2028
75,000 75,000 
Advance Royalty Commitments (8.80% and 8.09% Weighted Average Interest Rate, respectively)
5,922 7,716 
Other Debt Arrangements1,419 2,400 
11.00% Senior Secured Second Lien Notes due November 2025
— 99,107 
Term Loan B due in September 2024 (Principal of $63,590 less Unamortized Discount of $106, 8.92% Weighted Average Interest Rate at December 31, 2022)
— 63,484 
Less: Unamortized Debt Issuance Costs(1,686)(3,721)
 183,520 346,851 
Less: Amounts Due in One Year*(1,635)(4,741)
Long-Term Debt$181,885 $342,110 
*Excludes current portion of Finance Lease Obligations of $9,471 and $24,105 at December 31, 2023 and 2022, respectively.
Schedule of Maturities of Long-term Debt
Annual undiscounted maturities on the Company's debt instruments during the next five years and thereafter are as follows:
Year ended December 31,Amount
2024$1,635 
2025103,900 
2026883 
2027816 
202875,697 
Thereafter2,275 
Total Long-Term Debt Maturities$185,206