Debt (Tables)

12 Months Ended

Dec. 31, 2019

Debt Disclosure [Abstract]

Components of Long-Term Debt

Long-term debt is comprised of the following:

As of December 31,	2019		2018
10.75% senior secured notes due April 15, 2022 ($440.0 million face value less unamortized discount and fees of $5.5 million and $8.0 million at December 31, 2019 and 2018, respectively)	$	434.5	$	432.0
5.50% convertible senior notes due March 1, 2021 (Face value of $84.2 million and $213.5 million less unamortized discount and fees of $4.2 million and $19.3 million at December 31, 2019 and 2018, respectively)	80.0		194.2
Finance leases	5.3		5.8
Other debt	59.8		20.8
Total	579.6		652.8
Less – current maturities	13.5		10.0
Total long-term debt	$	566.1	$	642.8

Estimated Fair Values of Long-term Debt

Presented below are the estimated fair values of long-term debt as of December 31, 2019 and 2018.

As of December 31,	2019		2018
10.75% senior secured notes due April 15, 2022	$	474.2	$	486.8
5.50% convertible senior notes due March 1, 2021	115.8		298.5

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:

Year	Total		Long-Term Debt		Finance Leases
2020	$	13.5	$	11.7	$	1.8
2021	94.6		92.8		1.8
2022	447.8		446.4		1.4
2023	12.2		12.0		0.2
2024	6.9		6.8		0.1
Thereafter	4.6		4.6		—
Total	$	579.6	$	574.3	$	5.3

Schedule of Cash Paid for Interest, Capitalized Interest, and Interest Expense

Cash paid for interest and capitalized interest expense during the three years ended December 31, 2019 was as follows:

Year ended December 31,	2019		2018		2017
Cash paid for interest	$	61.5	$	59.5	$	39.9
Capitalized interest expense	$	6.6	$	6.0	$	4.2

Interest expense related to the 2021 Notes is comprised of the following:

Year ended December 31,	2019		2018		2017
Contractual interest coupon	$	8.9	$	11.8	$	11.8
Amortization of debt discount	5.5		6.6		6.0
Amortization of debt issuance costs	0.9		1.2		1.2
Total	$	15.3	$	19.6	$	19.0

Interest expense related to the 2022 Notes is comprised of the following:

Year ended December 31,	2019		2018		2017
Contractual interest coupon	$	47.3	$	47.3	$	33.2
Amortization of debt issuance costs	2.4		2.4		1.7
Total	$	49.7	$	49.7	$	34.9