Derivative Instruments (Tables)

6 Months Ended

Jun. 30, 2018

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Summary of Derivative Financial Instruments by Balance Sheet Location

The following table sets forth the fair value of the Company's commodity contract derivatives and amounts that offset within the Condensed Consolidated Balance Sheets:

	June 30, 2018						December 31, 2017
	Assets			Liabilities			Assets			Liabilities
Gross amounts of derivatives recognized at fair value	$	4,664		$	3,162		$	812		$	8,001
Cash collateral	3,172			—			8,799			—
Total gross amount recognized	7,836			3,162			9,611			8,001
Gross amounts offset	(3,162		)	(3,162		)	(8,001		)	(8,001		)
Net amount reported in the condensed consolidated balance sheets	$	4,674		$	—		$	1,610		$	—

Summary of Derivative Financial Instruments by Location of Gain (Loss)

The following table sets forth the commodity contract derivatives gains and (losses) included in the Condensed Consolidated Statements of Operations:

	Location of Gain (Loss) Recognized in income	Three Months   Ended   June 30,   2018			Three Months   Ended   June 30,   2017		Six Months   Ended   June 30,   2018			Six Months   Ended   June 30,   2017
Commodity derivatives	Cost of goods sold – Biomass-based diesel	$	(12,909	)	$	9,758	$	(15,347	)	$	18,047