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Revenues
 6 Months Ended
Jun. 30, 2025
Revenue from Contract with Customer [Abstract]  
Revenues Revenues
Revenue Recognition

AdvanSix serves around 400 customers annually, primarily in the United States, spanning a wide variety of industries worldwide. For the six months ended June 30, 2025 and 2024, the Company's ten largest customers accounted for approximately 39% and 38% of total sales, respectively.

We typically sell to customers under master service agreements, with primarily one-year terms, or by purchase orders. We have historically experienced low customer turnover and have long-standing customer relationships, which span decades. Our largest customer is Shaw Industries Group, Inc. (“Shaw”), a significant consumer of caprolactam and Nylon 6 resin, to whom we sell under a long-term agreement. For each of the three months ended June 30, 2025 and 2024, the Company's sales to Shaw were 9% of our total sales.
The Company's revenue by product line, and related approximate percentage of total sales, for the three and six months ended June 30, 2025 and 2024 were as follows:
Three Months Ended
June 30,		Six Months Ended
June 30,
20252024*20252024*
Nylon$79,503 20%$103,217 23%$167,871 21%$187,606 24%
Caprolactam66,424 16%81,303 18%133,856 17%142,779 18%
Plant Nutrients156,770 38%147,339 32%285,011 36%242,035 30%
Chemical Intermediates107,325 26%121,620 27%201,075 26%217,888 28%
Total$410,022 100%$453,479 100%$787,813 100%$790,308 100%
* The Company transferred certain products between its Chemical Intermediates product line and its Plant Nutrients product line to align more closely with its current sales structure. Historical information has been reclassified to reflect these changes for all periods presented in the Consolidated Financial Statements. Total revenue amounts were not impacted for either period.

The Company's revenues by geographic area, and related approximate percentage of total sales, for the three and six months ended June 30, 2025 and 2024 were as follows:
Three Months Ended
June 30,		Six Months Ended
June 30,
2025202420252024
United States$358,671 87%$401,859 89%$679,118 86%$686,447 87%
International *51,351 13%51,620 11%108,695 14%103,861 13%
Total$410,022 100%$453,479 100%$787,813 100%$790,308 100%
* Predominantly Latin America and Canada
Deferred Income and Customer Advances
The Company defers revenues when cash payments are received in advance of our performance. Below is a roll-forward of Deferred income and customer advances for the six months ended June 30, 2025:
Opening balance January 1, 2025$37,538 
Additional cash advances— 
Less amounts recognized in revenues(35,680)
Ending balance June 30, 2025$1,858 
The Company expects to recognize as revenue the June 30, 2025 ending balance of Deferred income and customer advances within one year or less.