Other Assets (Tables)

12 Months Ended

Dec. 31, 2019

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:

	2019		2018
Commodity derivatives and related collateral, net	$	6,140	$	13,799
Prepaid expenses	16,082		19,328
Deposits	3,519		2,123
RIN inventory	2,137		2,000
Taxes receivable	5,115		2,991
Other	2,480		928
Total	$	35,473	$	41,169

Summary of other noncurrent assets

Other noncurrent assets consist of the following at December 31:

	2019		2018
Investments	$	19,205	$	13,053
Spare parts inventory	2,610		2,680
Catalysts	1,274		1,989
Deposits	552		381
Other	2,874		3,167
Total	$	26,515	$	21,270