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Other Accrued Liabilities (Tables)
 12 Months Ended
Dec. 31, 2021
Other Liabilities Disclosure [Abstract]  
Schedule of Accrued Liabilities
December 31,
20212020
Royalties$152,498 $72,401 
Accrued Interest36,035 26,549 
Short-Term Incentive Compensation19,591 20,340 
Deferred Revenue18,984 10,986 
Transportation Charges15,808 15,969 
Accrued Other Taxes12,681 10,580 
Accrued Payroll & Benefits5,747 5,009 
Litigation Contingency1,200 2,025 
Purchased Gas Payable757 1,528 
Other15,435 23,144 
Current Portion of Long-Term Liabilities:
Asset Retirement Obligations7,154 8,455 
Salary Retirement
1,842 1,787 
Total Other Accrued Liabilities$287,732 $198,773