Other Assets (Tables)

12 Months Ended

Dec. 31, 2015

Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]

Summary of prepaid expense and other current assets

Prepaid expenses and other current assets consist of the following at December 31:

	2015		2014
Commodity derivatives and related collateral, net	$	10,097	$	12,938
Prepaid expenses	8,504		7,901
Deposits	3,824		4,481
RIN inventory	5,656		10,795
Taxes receivable	1,814		2,843
Other	1,987		4,177
Total	$	31,882	$	43,135

Summary of other noncurrent assets

Other noncurrent assets consist of the following at December 31:

	2015		2014
Spare parts inventory	$	2,922	$	3,440
Deposits	2,370		4,370
Other	6,527		6,624
Total	$	11,819	$	14,434