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Debt (Tables)
 12 Months Ended
Dec. 31, 2023
Debt Disclosure [Abstract]  
Schedule of Components of Long-term Debt
Long-term debt is comprised of the following:
As of December 31,20232022
6.875% senior secured notes due November 1, 2027 (Face value of $485.0 million less unamortized issuance costs of $4.6 million and $5.8 million at December 31, 2023 and 2022, respectively)
$480.4 $479.2 
Finance leases0.3 1.1 
Other debt23.5 32.8 
Total504.2 513.1 
Less – current maturities13.0 17.4 
Total long-term debt$491.2 $495.7 
Schedule of Estimated Fair Values of Long-term Debt Presented below are the estimated fair values of long-term debt.
As of December 31,20232022
6.875% senior secured notes due November 1, 2027
$437.5 $373.0 
Schedule of Maturities of Long-term Debt, Including Finance Leases
Maturities of long-term debt, including finance leases, in each of the next five years and thereafter are as follows:
YearTotalLong-Term DebtFinance Leases
2024$13.0 $12.7 $0.3 
20256.6 6.6 — 
20263.3 3.3 — 
2027481.3 481.3 — 
Total$504.2 $503.9 $0.3 
Schedule of Interest Expense
Cash paid for interest and capitalized interest expense was as follows:
Year ended December 31,202320222021
Cash paid for interest$35.5 $36.5 $40.1 
Capitalized interest expense$5.7 $5.1 $4.5 
Interest expense related to the 2027 Notes is comprised of the following:
Year ended December 31,202320222021
Contractual interest coupon$33.3 $33.3 $33.3 
Amortization of issuance costs1.2 1.2 1.2 
Total$34.5 $34.5 $34.5 
Interest expense related to the 2021 Notes was as follows:
Year ended December 31,2021
Contractual interest coupon$0.8 
Amortization of debt discount0.5 
Amortization of debt issuance costs0.1 
Total$1.4