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Revenue from Contracts with Customer (Tables) | 3 Months Ended
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Mar. 31, 2018
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
| • Silicate for water treatment
| • Glass beads, or microspheres, for metal finishing end uses
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
| • Solid and hollow microspheres for composite plastics
Highway safety & construction | • Reflective markings for roadways and airports
| • Hollow glass beads, or microspheres, for cement additives
Consumer products | • Silica gels for edible oil and beer clarification
| • Precipitated silicas and zeolites for the surface coating, dentifrice, and
| dishwasher and laundry detergent applications
Natural resources | • Silicates for drilling muds
| • Hollow glass beads, or microspheres, for oil well cements
| • Sulfur derivatives for copper mining
| • Bleaching aids for paper
The following table disaggregates the Company’s sales, by segment and end use, for the three months months ended March 31, 2018:
|  | Three months ended March 31, 2018
|  | Environmental Catalysts & Services |  | Performance Materials & Chemicals |  | Total
Industrial & process chemicals |  | $ | 17,039 |  |  | $ | 75,271 |  |  | $ | 92,310 |
Fuels & emission control (1) |  | 55,997 |  |  | — |  |  | 55,997 |
Packaging & engineered plastics |  | 28,243 |  |  | 31,808 |  |  | 60,051 |
Highway safety & construction (1) |  | — |  |  | 47,145 |  |  | 47,145 |
Consumer products |  | — |  |  | 76,730 |  |  | 76,730 |
Natural resources |  | 15,908 |  |  | 18,868 |  |  | 34,776 |
Total |  | 117,187 |  |  | 249,822 |  |  | 367,009 |
Inter-segment sales eliminations |  | (812 | ) |  | — |  |  | (812 | )
Total segment sales |  | $ | 116,375 |  |  | $ | 249,822 |  |  | $ | 366,197 |
(1) | As described in Note 1, the Company experiences seasonal sales fluctuations to customers in the fuels and emission control and highway safety and construction end uses.

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- Definition Tabular disclosure of disaggregation of revenue into categories depicting how nature, amount, timing, and uncertainty of revenue and cash flows are affected by economic factor. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=82913847&loc=SL49130545-203045 + Details
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