Fair Value Measurements - Recurring (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Senior Notes 7.00 Percent Due 2027
Liabilities:
Stated interest rate (as a percent)	7.00%	7.00%
Face value of debt instrument	$ 400,000	$ 400,000
Fair value of debt instrument	$ 364,000	$ 412,000
Senior Notes 6.875 Percent Due 2029
Liabilities:
Stated interest rate (as a percent)	6.875%	6.875%
Face value of debt instrument	$ 350,000	$ 350,000
Fair value of debt instrument	$ 314,125	$ 358,750
Forward derivative contracts
Assets:
Derivative Asset, Statement of Financial Position [Extensible Enumeration]	Derivative Asset, Current	Derivative Asset, Current
Liabilities:
Derivative Liability, Statement of Financial Position [Extensible Enumeration]	Derivative Liability, Current	Derivative Liability, Current
Recurring basis | Exchange-Traded Derivatives
Assets:
Cash collateral netting	$ (24,148)	$ 7,747
Recurring basis | Total estimated fair value
Assets:
Pension plans	17,253	22,703
Total assets	67,592	68,013
Recurring basis | Total estimated fair value | Forward derivative contracts
Assets:
Derivative assets	21,758	11,652
Liabilities:
Derivative liabilities	(24,425)	(31,654)
Recurring basis | Total estimated fair value | Exchange-Traded Derivatives
Assets:
Exchange-traded/cleared derivative instruments	28,581	33,658
Recurring basis | Total estimated fair value | Level 1
Assets:
Pension plans	17,253	22,703
Total pre-netting liabilities	69,982	48,614
Recurring basis | Total estimated fair value | Level 1 | Exchange-Traded Derivatives
Assets:
Exchange-traded/cleared derivative instruments	52,729	25,911
Recurring basis | Total estimated fair value | Level 2
Assets:
Total assets	21,758	11,652
Recurring basis | Total estimated fair value | Level 2 | Forward derivative contracts
Assets:
Derivative assets	21,758	11,652
Liabilities:
Derivative liabilities	$ (24,425)	$ (31,654)