Debt (Tables)

12 Months Ended

Dec. 31, 2019

Debt Disclosure [Abstract]

Schedule of Long-Term Debt

	December 31,
	2019		2018
Debt:
Term Loan B due in September 2024 (Principal of $272,938 and $396,000 less Unamortized Discount of $1,187 and $6,253, respectively, 6.30% and 8.53% Weighted Average Interest Rate, respectively)	$	271,751	$	389,747
11.00% Senior Secured Second Lien Notes due November 2025	221,628		274,276
MEDCO Revenue Bonds in Series due September 2025 at 5.75%	102,865		102,865
Term Loan A due in March 2023 (5.55% and 6.78% Weighted Average Interest Rate, respectively)	88,750		73,750
Other Asset-Backed Financing Arrangements	9,289		—
Advance Royalty Commitments (10.78% and 8.57% Weighted Average Interest Rate, respectively)	1,895		2,261
Less: Unamortized Debt Issuance Costs	10,323		16,409
	685,855		826,490
Less: Amounts Due in One Year*	32,053		117,954
Long-Term Debt	$	653,802	$	708,536

*Excludes current portion of Finance Lease Obligations of $18,219 and $16,858 at December 31, 2019 and 2018, 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
2020	$	32,053
2021	28,826
2022	36,258
2023	12,456
2024	262,683
Thereafter	325,089
Total Long-Term Debt Maturities	$	697,365