Quarterly report [Sections 13 or 15(d)]

Industry Segments - Schedule of Segment Information (Details)

v3.25.3
Industry Segments - Schedule of Segment Information (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Apr. 04, 2025
Sep. 30, 2025
Sep. 30, 2024
Sep. 30, 2025
Sep. 30, 2024
Dec. 31, 2024
Segment Reporting Information [Line Items]            
Net sales   $ 19,697 $ 20,878 $ 56,183 $ 62,642  
Cost of goods sold - material   8,173 10,657 25,351 32,387  
Cost of goods sold - other   5,683 7,213 17,059 23,048  
Gross profit   5,841 3,008 13,773 7,207  
Selling, general and administrative expense   6,253 5,034 17,567 15,518  
Acquisition costs and other   398 2 665 54  
Asset impairments   0 0 1,622 0  
Gain on lease modification $ (500) 0 (67) (544) (67)  
Interest expense (income), net   (447) 124 (347) 323  
Income taxes   58 5,807 (32) 4,413  
Other expense (income)   (296) (91) (581) (303)  
Loss from continuing operations   (125) (7,801) (4,577) (12,731)  
Identifiable assets   119,889   119,889   $ 147,250
Continuing Operations            
Segment Reporting Information [Line Items]            
Identifiable assets   119,889   119,889   85,226
Operating segment | Specialty Chemicals            
Segment Reporting Information [Line Items]            
Net sales   19,697 20,878 56,183 62,642  
Cost of goods sold - material   8,173 10,657 25,351 32,387  
Cost of goods sold - other   5,683 7,088 17,059 22,653  
Gross profit   5,841 3,133 13,773 7,602  
Selling, general and administrative expense   3,696 2,747 9,267 8,226  
Acquisition costs and other   0 0 92 0  
Asset impairments   0   0    
Gain on lease modification   0 0 0 0  
Interest expense (income), net   7 19 38 57  
Income taxes   0 0 0 0  
Other expense (income)   0 0 0 0  
Loss from continuing operations   2,138 367 4,376 (681)  
Operating segment | Specialty Chemicals | Continuing Operations            
Segment Reporting Information [Line Items]            
Identifiable assets   39,130   39,130   38,928
Corporate & Other            
Segment Reporting Information [Line Items]            
Net sales   0 0 0 0  
Cost of goods sold - material   0 0 0 0  
Cost of goods sold - other   0 125 0 395  
Gross profit   0 (125) 0 (395)  
Selling, general and administrative expense   2,557 2,287 8,300 7,292  
Acquisition costs and other   398 2 573 54  
Asset impairments   0   1,622    
Gain on lease modification   0 (67) (544) (67)  
Interest expense (income), net   (454) 105 (385) 266  
Income taxes   58 5,807 (32) 4,413  
Other expense (income)   (296) (91) (581) (303)  
Loss from continuing operations   (2,263) $ (8,168) (8,953) $ (12,050)  
Corporate & Other | Continuing Operations            
Segment Reporting Information [Line Items]            
Identifiable assets   $ 80,759   $ 80,759   $ 46,298