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Environmental Matters - Schedule of Rollforward of Our Environmental Liabilities (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2021 | Dec. 31, 2020
Environmental Exit Cost [Line Items] |  |
Balance at beginning of year | $ 41,767 | $ 35,777
Obligations settled | (1,429) | (315)
Balance at end of year | 45,749 | 41,767
Current portion, included within accrued expenses and other current liabilities | 383 | 317
Asset retirement obligations | 45,366 | 41,450
Environmental Restoration Costs [Member] |  |
Environmental Exit Cost [Line Items] |  |
Balance at beginning of year | 3,914 | 3,390
Provision for new environmental losses | 2,996 | 210
Changes in estimates for previously incurred losses | 6 | 1,403
Obligations settled | (1,540) | (1,089)
Balance at end of year | 5,376 | 3,914
Current portion, included within accrued expenses and other current liabilities | 2,419 | 1,710
Asset retirement obligations | $ 2,957 | $ 2,204

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- Definition Amount of expense (reversal of expense) which increases (decreases) the accrual for environmental loss contingencies from revisions in estimates to existing obligations. Excludes changes related to business acquisitions, divestitures, or currency movement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 5.Y.Q2) -URI http://asc.fasb.org/extlink&oid=27011672&loc=d3e149879-122751 + Details
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- Definition The carrying amount of a liability for an asset retirement obligation. An asset retirement obligation is a legal obligation associated with the disposal or retirement of a tangible long-lived asset that results from the acquisition, construction or development, or the normal operations of a long-lived asset, except for certain obligations of lessees. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 410 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6392692&loc=d3e7535-110849 + Details
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