Long-Term Debt - Narrative (Details) - USD ($) $ in Millions				3 Months Ended
		Jan. 20, 2022	Feb. 23, 2018	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021
Long-Term Debt (Textual) [Abstract]
Accumulated Amortization, Deferred Finance Costs				$ 19.4		$ 22.5
(Gain) loss on debt extinguishment				1.0
Repayments of borrowings — senior notes				$ 325.0	$ 0.0
Gain (Loss) on Extinguishment of Debt [Abstract]
Debt Instrument, Covenant Compliance				in compliance with all covenants under the indentures governing the Senior Notes
Line of Credit Facility, Remaining Borrowing Capacity				$ 401.7
Total long-term debt, excluding current portion				1,441.8		1,418.8
Debt and Lease Obligation				1,449.1		1,426.2
Unamortized Debt Issuance Expense	[1]			(21.8)		(17.8)
Present value of Finance Lease Liability	[2]			3.7
Other				0.0		0.7
MRL lease financing arrangement				13.9		0.0
Line of Credit Amendment		Jan. 20, 2022
Notes Due April 2023 at Fixed Rate of 7.75% Interest Payments
Long-Term Debt (Textual) [Abstract]
Senior Notes, Noncurrent				$ 0.0		$ 325.0
Effective interest rate				8.30%		8.30%
Fixed rate				7.75%
Revolving Credit Facility
Long-Term Debt (Textual) [Abstract]
Maturity date			Feb. 23, 2023
Senior secured revolving credit facility				$ 500.0
Outstanding standby letters of credit				$ 35.8		$ 32.7
Financial covenant				if the Company’s availability to borrow loans under the revolving credit facility falls below the greater of (i) 10% of the Borrowing Base (as defined in the Credit Agreement) then in effect, and (ii) $35.0 million (which amount is subject to increase in proportion to revolving commitment increases), then the Company will be required to maintain as of the end of each fiscal quarter a Fixed Charge Coverage Ratio (as defined in the Credit Agreement) of at least 1.0 to 1.0.
Line of Credit Facility, Current Borrowing Capacity				$ 448.5
Gain (Loss) on Extinguishment of Debt [Abstract]
Long-term Line of Credit				$ 11.0		$ 0.0
Weighted average interest rate				3.10%		2.40%
Revolving Credit Facility | Maximum
Long-Term Debt (Textual) [Abstract]
Letter of Credit Sublimit				90.00%		90.00%
Notes due July Two Thousand Twenty Seven at Fixed Rate Eight Point Three Percentage Interest Payments
Long-Term Debt (Textual) [Abstract]
Senior Notes, Noncurrent				$ 325.0		$ 0.0
Effective interest rate				8.40%
Fixed rate				8.125%
Gain (Loss) on Extinguishment of Debt [Abstract]
Debt Instrument, Issuance Date		Jan. 20, 2022
Long-Term Debt, Gross		$ 325.0
Proceeds from Debt, Net of Issuance Costs		$ 319.1
Unamortized Discount on Two Thousand One Nine and Two Thousand Two Zero Notes [Member]
Gain (Loss) on Extinguishment of Debt [Abstract]
Debt Instrument, Unamortized Discount				$ (1.7)		(3.5)
Capital Lease Obligations
Gain (Loss) on Extinguishment of Debt [Abstract]
Present value of Finance Lease Liability				3.7		4.0
Notes Due January Two Thousand Twenty One at Fixed Rated Eleven Point Five Percentage Interest Payments [Member]
Long-Term Debt (Textual) [Abstract]
Senior Notes, Noncurrent				$ 550.0		$ 550.0
Notes due April twenty twenty-five at Eleven percent interest payments [Member]
Long-Term Debt (Textual) [Abstract]
Effective interest rate				11.40%		11.40%
Fixed rate				11.00%		11.00%
Notes Due July Two Thousand Twenty Four at Fixed Rate of Nine Point Two Five Percentage Interest Payments [Domain]
Long-Term Debt (Textual) [Abstract]
Senior Notes, Noncurrent				$ 200.0		$ 200.0
Notes Due April Two Thousand Two Four at Fixed Rate of Nine Point Two Five Percentage Interest Payments
Long-Term Debt (Textual) [Abstract]
Effective interest rate				9.50%		9.40%
Fixed rate				9.25%		9.25%
MRL Credit Facility
Long-Term Debt (Textual) [Abstract]
Effective interest rate				12.20%		12.50%

[1] Deferred debt issuance costs are being amortized by the effective interest rate method over the lives of the related debt instruments. These amounts are net of accumulated amortization of $19.4 million and $22.5 million at March 31, 2022 and December 31, 2021, respectively.

[2] As of March 31, 2022, the Company’s finance lease payments included no material options to extend lease terms that are reasonably certain of being exercised. The Company has no legally binding minimum lease payments for leases that have been signed but not yet commenced as of March 31, 2022.