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Summary of Significant Accounting Policies - Concentration Risk (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Concentration Risk [Line Items]      
Revenues $ 168,882 $ 114,976 $ 266,845
Targa Pipeline Mid-Continent West OK LLC      
Concentration Risk [Line Items]      
Revenues $ 91,066 $ 38,287 $ 85,780
Targa Pipeline Mid-Continent West OK LLC | Revenue Benchmark | Customer Concentration Risk      
Concentration Risk [Line Items]      
Concentration risk percentage 53.90% 33.30% 32.10%
Plains Marketing L.P.      
Concentration Risk [Line Items]      
Revenues $ 51,204 $ 40,058 $ 69,214
Plains Marketing L.P. | Revenue Benchmark | Customer Concentration Risk      
Concentration Risk [Line Items]      
Concentration risk percentage 30.30% 34.80% 25.90%
Sinclair Crude Company      
Concentration Risk [Line Items]      
Revenues   $ 36,375 $ 74,810
Sinclair Crude Company | Revenue Benchmark | Customer Concentration Risk      
Concentration Risk [Line Items]      
Concentration risk percentage   31.60% 28.00%