Quarterly report pursuant to Section 13 or 15(d)

DERIVATIVES. (Details 1)

v3.19.1
DERIVATIVES. (Details 1) - Non Designated Derivative Instruments [Member] - Commodity Contracts [Member] - Cost of goods sold [Member] - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2019
Mar. 31, 2018
Derivative Instruments, Gain (Loss) [Line Items]    
Realized Gains (Losses) $ (630) $ (1,658)
Unrealized Gains (Losses) $ 544 $ 1,196