Quarterly report pursuant to Section 13 or 15(d)

Derivatives. (Tables)

v3.20.2
Derivatives. (Tables)
 9 Months Ended
Sep. 30, 2020
Derivative Instruments and Hedging Activities Disclosure [Abstract]  
Schedule of derivatives not designated as hedging instruments
    As of September 30, 2020  
    Assets     Liabilities  
    Balance Sheet   Fair     Balance Sheet   Fair  
Type of Instrument   Location   Value     Location   Value  
Cash collateral balance   Other current assets   $ 15            
Commodity contracts   Derivative instruments   $ 5,792     Derivative instruments   $ —  
    As of December 31, 2019  
    Assets     Liabilities  
    Balance Sheet   Fair     Balance Sheet   Fair  
Type of Instrument   Location   Value     Location   Value  
Cash collateral balance   Other current assets   $ 615            
Commodity contracts   Derivative instruments   $ 2,438     Derivative instruments   $ 1,860  
Schedule of recognized gains (losses) for derivatives
        Realized Gains (Losses)  
        Three Months Ended
September 30,		  
Type of Instrument    Statements of Operations Location   2020     2019  
Commodity contracts   Cost of goods sold   $ (531 )   $ 2,262  
        Unrealized Gains (Losses)  
        Three Months Ended
September 30,		  
Type of Instrument    Statements of Operations Location   2020     2019  
Commodity contracts   Cost of goods sold   $ 2,113   $ (5,582 )
        Realized Gains (Losses)  
        Nine Months Ended
September 30,		  
Type of Instrument    Statements of Operations Location   2020     2019  
Commodity contracts   Cost of goods sold   $ 47   $ (2,150 )
        Unrealized Gains (Losses)  
        Nine Months Ended
September 30,		  
Type of Instrument    Statements of Operations Location   2020     2019  
Commodity contracts   Cost of goods sold   $ 1,535   $ 3,715