Intangible Assets

3 Months Ended

Mar. 31, 2016

Goodwill and Intangible Assets Disclosure [Abstract]

Intangible Assets

INTANGIBLE ASSETS

Intangible assets consist of the following:

	March 31, 2016
	Cost		Accumulated Amortization			Net		Weighted Average Remaining Life
Raw material supply agreement	$	6,230	$	(1,653	)	$	4,577	9.8 years
Renewable hydrocarbon diesel technology	8,300		(1,014		)	7,286		13.3 years
Ground lease	200		(116		)	84		5.6 years
Acquired customer relationships	2,900		(179		)	2,721		9.3 years
Total amortizing intangibles	17,630		(2,962		)	14,668
In-process research and development, indefinite lives	15,956		—			15,956
Total intangible assets	$	33,586	$	(2,962	)	$	30,624

	December 31, 2015
	Cost		Accumulated Amortization			Net		Weighted Average Remaining Life
Raw material supply agreement	$	6,230	$	(1,551	)	$	4,679	10.0 years
Renewable hydrocarbon diesel technology	8,300		(876		)	7,424		13.5 years
Ground lease	200		(112		)	88		5.9 years
Acquired customer relationships	2,900		(106		)	2,794		9.6 years
Total amortizing intangibles	17,630		(2,645		)	14,985
In-process research and development, indefinite lives	15,956		—			15,956
Total intangible assets	$	33,586	$	(2,645	)	$	30,941

The Company recorded intangible amortization expense of $317 for the three months ended March 31, 2016, and $237 for the three months ended March 31, 2015.

The estimated intangible asset amortization expense for the remainder of fiscal year 2016 through fiscal year 2022 and thereafter is as follows:

April 1, 2016 through December 31, 2016	$	972
2017	1,302
2018	1,309
2019	1,315
2020	1,322
2021	1,328
2022 and thereafter	7,120
Total	$	14,668