Revenue from Contracts with Customers Revenue from Contracts with Customers (Tables)

12 Months Ended

Dec. 31, 2020

Revenue from Contract with Customer [Abstract]

Disaggregation of Revenue

The Company’s portfolio of products are integrated into a variety of end uses, which are described in the table below:

Key End Uses	Key Products
Industrial & process chemicals	• Silicate precursors for the tire industry
	• Silica gels for surface coatings
Fuels & emission control	• Refinery catalysts
	• Emission control catalysts
	• Catalyst recycling services
Packaging & engineered plastics	• Catalysts for high-density polyethlene and chemicals syntheses
	• Antiblocks for film packaging
	• Sulfur derivatives for nylon production
	• Silicate precursors for catalysts used in plastics manufacturing
	• Silicate for catalyst manufacturing
Consumer products	• Silica gels for edible oil and beer clarification
	• Precipitated silicas, silicates and zeolites for the dentifrice and dishwasher and laundry detergent applications
Natural resources	• Silicates for drilling muds
	• Silicates and alum for water treatment mining
	• Bleaching aids for paper

The following table disaggregates the Company’s sales, by segment and end use, for the years ended December 31, 2020, 2019 and 2018:

	Year ended December 31, 2020
	Refining Services		Catalysts		Performance Chemicals		Total
Industrial & process chemicals	$	70,648	$	125	$	279,296	$	350,069
Fuels & emission control(1)	225,042		—		—		225,042
Packaging & engineered plastics	38,772		93,882		47,451		180,105
Consumer products	—		—		235,792		235,792
Natural resources	67,451		—		52,165		119,616
Total segment sales	401,913		94,007		614,704		1,110,624
Inter-segment sales eliminations	(3,256)		(5)		—		(3,261)
Total	$	398,657	$	94,002	$	614,704	$	1,107,363
	Year ended December 31, 2019
	Refining Services		Catalysts		Performance Chemicals		Total
Industrial & process chemicals	$	80,661	$	96	$	299,651	$	380,408
Fuels & emission control(1)	252,294		—		—		252,294
Packaging & engineered plastics	48,056		85,571		51,725		185,352
Consumer products	—		—		260,495		260,495
Natural resources	66,070		—		58,692		124,762
Total segment sales	447,081		85,667		670,563		1,203,311
Inter-segment sales eliminations	(3,397)		—		—		(3,397)
Total	$	443,684	$	85,667	$	670,563	$	1,199,914
	Year ended December 31, 2018
	Refining Services		Catalysts		Performance Chemicals		Total
Industrial & process chemicals	$	77,866	$	86	$	315,827	$	393,779
Fuels & emission control(1)	246,452		—		—		246,452
Packaging & engineered plastics	59,168		72,013		53,623		184,804
Consumer products	—		—		272,187		272,187
Natural resources	72,076		—		62,865		134,941
Total segment sales	455,562		72,099		704,502		1,232,163
Inter-segment sales eliminations	(3,237)		—		—		(3,237)
Total	$	452,325	$	72,099	$	704,502	$	1,228,926

(1)    As described in Note 1, the Company experiences seasonal sales fluctuations to customers in the fuels & emission control end use.