Quarterly report pursuant to Section 13 or 15(d)

Derivative Instruments - Additional Information (Detail)

v3.21.2
Derivative Instruments - Additional Information (Detail)
$ in Thousands
6 Months Ended
Jun. 30, 2021
USD ($)
Customer
Dec. 31, 2020
USD ($)
Derivative Instruments and Hedging Activities Disclosure [Line Items]    
Derivative assets $ 85,771 $ 113,540
Derivative Asset 8,718 $ 100,955
Interest Rate Swap    
Derivative Instruments and Hedging Activities Disclosure [Line Items]    
Derivative assets $ 3,400  
Number of derivative counterparties | Customer 4  
Derivative, Notional Amount $ 300,000  
Derivative, Average Fixed Interest Rate 136.00%  
Commodity contracts    
Derivative Instruments and Hedging Activities Disclosure [Line Items]    
Derivative assets $ 73,700  
Number of derivative counterparties | Customer 7  
Commodity contracts | Crude Oil    
Derivative Instruments and Hedging Activities Disclosure [Line Items]    
Third-party quoted forward prices NYMEX WTI  
Commodity contracts | MEH [Member]    
Derivative Instruments and Hedging Activities Disclosure [Line Items]    
Third-party quoted forward prices MEH  
Commodity contracts | Natural Gas [Member]    
Derivative Instruments and Hedging Activities Disclosure [Line Items]    
Third-party quoted forward prices NYMEX HH  
Commodity contracts | Natural Gas Liquids    
Derivative Instruments and Hedging Activities Disclosure [Line Items]    
Third-party quoted forward prices OPIS Mt Belv Ethane