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Environmental Matters - Schedule of Rollforward of Our Environmental Liabilities (Details) - USD ($)
$ in Thousands
 12 Months Ended
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