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Related Party Transactions - Schedule of Supplemental Income Statement Information for CST Fuel Supply (Details) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Mar. 25, 2020
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Supplemental Income Statement Information [Line Items]        
Gross profit   $ 276,953 $ 212,127 $ 154,637
Net income   $ 21,654 $ 107,456 18,076
CST Brands Inc. [Member]        
Supplemental Income Statement Information [Line Items]        
Gross profit $ 17,820     87,010
Net income $ 17,476     $ 85,310