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Revenue from Contracts with Customers Revenue from Contracts with Customers (Tables)
 12 Months Ended
Dec. 31, 2025
Revenue from Contract with Customer [Abstract]  
Disaggregation of Revenue
The Company’s portfolio of products is integrated into a variety of end uses. The Company’s primary means of disaggregating revenues is by key end uses, which are described in the table below.
Key End UsesKey Products
Regeneration and treatment services• Regenerated sulfuric acid
• Hazardous waste treatment services
Industrial, mining & automotive• Virgin sulfuric acid for mining
• Virgin sulfuric acid derivatives for industrial production
• Virgin sulfuric acid derivatives for nylon production
Other• Catalyst activation
• Aluminum sulfate solution
• Ammonium bisulfite solution
The following table disaggregates the Company’s sales, by key end uses, for the years ended December 31, 2025, 2024 and 2023, respectively:
Years ended December 31,
202520242023
Regeneration and treatment services(1)
$361,240 $357,376 $354,606 
Industrial, mining & automotive327,935 206,923 200,389 
Other34,340 33,996 29,850 
Total sales$723,515 $598,295 $584,845 
(1)    As described in Note 1 to these consolidated financial statements, the Company experiences seasonal sales fluctuations to customers in the regeneration services product group.