Debt (Tables)

12 Months Ended

Dec. 31, 2018

Debt Disclosure [Abstract]

Schedule of Long-Term Debt

	December 31,
	2018		2017
Debt:
Term Loan B due in November 2022 (Principal of $396,000 and $400,000 less Unamortized Discount of $6,253 and $7,853, respectively, 8.53% and 7.47% Weighted Average Interest Rate, respectively)	$	389,747	$	392,147
11.00% Senior Secured Second Lien Notes due 2025	274,276		300,000
MEDCO Revenue Bonds in Series due September 2025 at 5.75%	102,865		102,865
Term Loan A due in November 2021 (6.78% and 5.92% Weighted Average Interest Rate, respectively)	73,750		100,000
Advance Royalty Commitments (8.57% and 9.42% Weighted Average Interest Rate, respectively)	2,261		2,085
Less: Unamortized Debt Issuance Costs	16,409		21,129
	826,490		875,968
Less: Amounts Due in One Year*	117,954		19,318
Long-Term Debt	$	708,536	$	856,650

*Excludes current portion of Capital Lease Obligations of $16,858 and $3,164 at December 31, 2018 and 2017, respectively.

Schedule of Undiscounted Maturities of Long-Term Debt

Annual undiscounted maturities on long-term debt during the next five years and thereafter are as follows:

Year ended December 31,	Amount
2019	$	117,954
2020	29,356
2021	49,327
2022	274,424
2023	170
Thereafter	377,921
Total Long-Term Debt Maturities	$	849,152