Annual report [Section 13 and 15(d), not S-K Item 405]

Industry Segments - Schedule of Geographic Information (Details)

v3.25.4
Industry Segments - Schedule of Geographic Information (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Segment Reporting Information [Line Items]    
Geographic sales $ 74,942 $ 80,763
Operating Segments | Specialty Chemicals Segment    
Segment Reporting Information [Line Items]    
Geographic sales 74,942 80,763
Corporate & Other    
Segment Reporting Information [Line Items]    
Geographic sales 0 0
United States    
Segment Reporting Information [Line Items]    
Geographic sales 70,495 75,564
United States | Operating Segments | Specialty Chemicals Segment    
Segment Reporting Information [Line Items]    
Geographic sales 70,495 75,564
United States | Corporate & Other    
Segment Reporting Information [Line Items]    
Geographic sales 0 0
Mexico    
Segment Reporting Information [Line Items]    
Geographic sales 1,186 1,880
Mexico | Operating Segments | Specialty Chemicals Segment    
Segment Reporting Information [Line Items]    
Geographic sales 1,186 1,880
Mexico | Corporate & Other    
Segment Reporting Information [Line Items]    
Geographic sales 0 0
Canada    
Segment Reporting Information [Line Items]    
Geographic sales 785 1,750
Canada | Operating Segments | Specialty Chemicals Segment    
Segment Reporting Information [Line Items]    
Geographic sales 785 1,750
Canada | Corporate & Other    
Segment Reporting Information [Line Items]    
Geographic sales 0 0
Honduras    
Segment Reporting Information [Line Items]    
Geographic sales 711 1,212
Honduras | Operating Segments | Specialty Chemicals Segment    
Segment Reporting Information [Line Items]    
Geographic sales 711 1,212
Honduras | Corporate & Other    
Segment Reporting Information [Line Items]    
Geographic sales 0 0
Colombia    
Segment Reporting Information [Line Items]    
Geographic sales 627  
Colombia | Operating Segments | Specialty Chemicals Segment    
Segment Reporting Information [Line Items]    
Geographic sales 627  
Colombia | Corporate & Other    
Segment Reporting Information [Line Items]    
Geographic sales 0  
The Netherlands    
Segment Reporting Information [Line Items]    
Geographic sales 597  
The Netherlands | Operating Segments | Specialty Chemicals Segment    
Segment Reporting Information [Line Items]    
Geographic sales 597  
The Netherlands | Corporate & Other    
Segment Reporting Information [Line Items]    
Geographic sales 0  
Costa Rica    
Segment Reporting Information [Line Items]    
Geographic sales 266 194
Costa Rica | Operating Segments | Specialty Chemicals Segment    
Segment Reporting Information [Line Items]    
Geographic sales 266 194
Costa Rica | Corporate & Other    
Segment Reporting Information [Line Items]    
Geographic sales 0 0
Japan    
Segment Reporting Information [Line Items]    
Geographic sales 90  
Japan | Operating Segments | Specialty Chemicals Segment    
Segment Reporting Information [Line Items]    
Geographic sales 90  
Japan | Corporate & Other    
Segment Reporting Information [Line Items]    
Geographic sales 0  
Guatemala    
Segment Reporting Information [Line Items]    
Geographic sales 53 22
Guatemala | Operating Segments | Specialty Chemicals Segment    
Segment Reporting Information [Line Items]    
Geographic sales 53 22
Guatemala | Corporate & Other    
Segment Reporting Information [Line Items]    
Geographic sales 0 0
Singapore    
Segment Reporting Information [Line Items]    
Geographic sales 44 44
Singapore | Operating Segments | Specialty Chemicals Segment    
Segment Reporting Information [Line Items]    
Geographic sales 44 44
Singapore | Corporate & Other    
Segment Reporting Information [Line Items]    
Geographic sales 0 0
Bahamas    
Segment Reporting Information [Line Items]    
Geographic sales 37  
Bahamas | Operating Segments | Specialty Chemicals Segment    
Segment Reporting Information [Line Items]    
Geographic sales 37  
Bahamas | Corporate & Other    
Segment Reporting Information [Line Items]    
Geographic sales 0  
Taiwan    
Segment Reporting Information [Line Items]    
Geographic sales 31 30
Taiwan | Operating Segments | Specialty Chemicals Segment    
Segment Reporting Information [Line Items]    
Geographic sales 31 30
Taiwan | Corporate & Other    
Segment Reporting Information [Line Items]    
Geographic sales 0 0
Thailand    
Segment Reporting Information [Line Items]    
Geographic sales 20  
Thailand | Operating Segments | Specialty Chemicals Segment    
Segment Reporting Information [Line Items]    
Geographic sales 20  
Thailand | Corporate & Other    
Segment Reporting Information [Line Items]    
Geographic sales $ 0  
Argentina    
Segment Reporting Information [Line Items]    
Geographic sales   47
Argentina | Operating Segments | Specialty Chemicals Segment    
Segment Reporting Information [Line Items]    
Geographic sales   47
Argentina | Corporate & Other    
Segment Reporting Information [Line Items]    
Geographic sales   0
Brazil    
Segment Reporting Information [Line Items]    
Geographic sales   11
Brazil | Operating Segments | Specialty Chemicals Segment    
Segment Reporting Information [Line Items]    
Geographic sales   11
Brazil | Corporate & Other    
Segment Reporting Information [Line Items]    
Geographic sales   0
Other    
Segment Reporting Information [Line Items]    
Geographic sales   9
Other | Operating Segments | Specialty Chemicals Segment    
Segment Reporting Information [Line Items]    
Geographic sales   9
Other | Corporate & Other    
Segment Reporting Information [Line Items]    
Geographic sales   $ 0