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Income Taxes Income Taxes - Deferred Tax Asset (Liability) (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Deferred tax assets:      
Net operating loss carryforwards $ 196,654 $ 158,916  
Accrued liabilities 4,527 3,133  
Other 12,503 12,124  
Deferred Tax Assets Gross 213,684 174,173  
Valuation allowances (735) (1,027) $ (822)
Total deferred tax assets 212,949 173,146  
Deferred tax liabilities:      
Property, plant and equipment (7,762) (6,066)  
Basis difference in the Partnership (151,469) (103,721)  
Other (6,975) (7,150)  
Total deferred tax liabilities (166,206) (116,937)  
Net deferred tax asset 46,743 56,209  
Deferred tax assets 47,879 56,934  
Deferred tax liabilities $ 1,136 $ 725  
U.S. statutory tax rate (as a percent) 21.00% 21.00% 21.00%