Intangible Assets

9 Months Ended

Sep. 30, 2015

Goodwill and Intangible Assets Disclosure [Abstract]

Intangible Assets

INTANGIBLE ASSETS

Intangible assets consist of the following:

	September 30, 2015
	Cost		Accumulated Amortization			Net		Weighted Average Remaining Life
Raw material supply agreement	$	6,152	$	(1,432	)	$	4,720	10.3 years
Renewable hydrocarbon diesel technology	8,300		(738		)	7,562		13.8 years
Ground lease	200		(108		)	92		6.3 years
Acquired customer relationships	2,900		—			2,900		10.0 years
Total amortizing intangibles	17,552		(2,278		)	15,274
In-process research and development, indefinite lives	15,956		—			15,956
Total intangible assets	$	33,508	$	(2,278	)	$	31,230

	December 31, 2014
	Cost		Accumulated Amortization			Net		Weighted Average Remaining Life
Raw material supply agreement	$	5,914	$	(1,113	)	$	4,801	11.0 years
Renewable hydrocarbon diesel technology	8,300		(323		)	7,977		14.5 years
Ground lease	200		(97		)	103		6.9 years
Total amortizing intangibles	14,414		(1,533		)	12,881
In-process research and development, indefinite lives	15,956		—			15,956
Total intangible assets	$	30,370	$	(1,533	)	$	28,837

The Company recorded intangible amortization expense of $257 and $745 for the three and nine months ended September 30, 2015, respectively, and $583 and $760 for the three and nine months ended September 30, 2014, respectively.

The estimated intangible asset amortization expense for fiscal year 2015 through fiscal year 2021 and thereafter is as follows:

October 1, 2015 through December 31, 2015	$	329
2016	1,330
2017	1,344
2018	1,358
2019	1,373
2020	1,389
2021 and thereafter	8,151
Total	$	15,274