4. Derivatives (Tables)

3 Months Ended

Mar. 31, 2017

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Schedule of Derivatives Not Designated as Hedging Instruments

Non Designated Derivative Instruments – The classification and amounts of the Company’s derivatives not designated as hedging instruments are as follows (in thousands):

	As of March 31, 2017
	Assets			Liabilities
Type of Instrument	Balance Sheet Location	Fair Value		Balance Sheet Location	Fair Value
Commodity contracts	Derivative instruments	$	594	Derivative instruments	$	1,171

	As of December 31, 2016
	Assets			Liabilities
Type of Instrument	Balance Sheet Location	Fair Value		Balance Sheet Location	Fair Value
Commodity contracts	Derivative instruments	$	978	Derivative instruments	$	4,115

Schedule of Recognized Gains (Losses) for Derivatives

The classification and amounts of the Company’s recognized gains (losses) for its derivatives not designated as hedging instruments are as follows (in thousands):

		Realized Gains (Losses)
		Three Months Ended March 31,
Type of Instrument	Statements of Operations Location	2017			2016
Commodity contracts	Cost of goods sold	$	(2,344	)	$	908

		Unrealized Gains (Losses)
		Three Months Ended March 31,
Type of Instrument	Statements of Operations Location	2017		2016
Commodity contracts	Cost of goods sold	$	2,560	$	(326	)