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Revenues (Tables) | 6 Months Ended
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Jun. 30, 2019
Revenue from Contract with Customer [Abstract] |
Disaggregation of Revenue | Each of the Company’s product lines represented the following approximate percentage of total sales for the three and six months ended June 30, 2019 and 2018:
| Three Months Ended June 30, |  |  |  | Six Months Ended June 30, |  |
| 2019 |  | 2018 |  | 2019 |  | 2018
Nylon | 27% |  |  | 27% |  |  | 29% |  |  | 28% |
Caprolactam | 20% |  |  | 19% |  |  | 20% |  |  | 18% |
Ammonium Sulfate Fertilizers | 27% |  |  | 21% |  |  | 25% |  |  | 20% |
Chemical Intermediates | 26% |  |  | 33% |  |  | 26% |  |  | 34% |
| 100% |  |  | 100% |  |  | 100% |  |  | 100% |
The Company's revenues by geographic area for the three and six months ended June 30, 2019 and 2018 were as follows:
| Three Months Ended June 30, |  |  |  | Six Months Ended June 30, |  |
| 2019 |  | 2018 |  | 2019 |  | 2018
United States | $ | 289,551 |  | $ | 342,497 |  | $ | 547,193 |  | $ | 640,145
International | 55,664 |  | 57,962 |  | 112,917 |  | 119,552
Total | $ | 345,215 |  | $ | 400,459 |  | $ | 660,110 |  | $ | 759,697
Summary of Deferred Income and Customer Advances | Below is a roll-forward of Deferred income and customer advances for the six months ended June 30, 2019:
Opening balance January 1, 2019 | $ | 22,556
Additional cash advances | 1,083
Less amounts recognized in revenues | (20,455)
Ending balance June 30, 2019 | $ | 3,184

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- Definition Tabular disclosure of contract balances and changes in contract balances. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130551-203045 + Details
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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/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130545-203045 + Details
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