Quarterly report pursuant to Section 13 or 15(d)

Derivative Instruments - Additional Information (Details)

v3.19.3
Derivative Instruments - Additional Information (Details)
$ in Thousands
9 Months Ended
Sep. 30, 2019
USD ($)
Entity
Dec. 31, 2018
USD ($)
Derivative Instruments and Hedging Activities Disclosure [Line Items]    
Derivative assets $ 4,320 $ 991
Commodity contracts    
Derivative Instruments and Hedging Activities Disclosure [Line Items]    
Derivative assets $ 18,200  
Number of derivative counterparties | Entity 8  
Commodity contracts | Crude Oil    
Derivative Instruments and Hedging Activities Disclosure [Line Items]    
Third-party quoted forward prices WTI  
Commodity contracts | Louisiana Light Sweet [Member]    
Derivative Instruments and Hedging Activities Disclosure [Line Items]    
Third-party quoted forward prices LLS  
Commodity contracts | MEH [Member]    
Derivative Instruments and Hedging Activities Disclosure [Line Items]    
Third-party quoted forward prices MEH