Quarterly report [Sections 13 or 15(d)]

Schedule of Segment Reporting Information (Details)

v3.26.3
Schedule of Segment Reporting Information (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Sep. 30, 2026
Sep. 30, 2025
Dec. 31, 2025
Dec. 31, 2024
Segment Reporting [Line Items]            
Revenue from external customers $ 17,948 $ 17,454 $ 41,959 $ 45,959    
Cost of Goods Sold:            
Total cost of goods sold 17,396 14,897 46,792 41,198    
Gross profit 552 2,557 (4,833) 4,761    
SG&A:            
Total SG&A 3,998 4,083 12,047 12,228    
R&D 225 342 781 1,037    
Gain on disposal of property and equipment (5) 4 (5) (2)    
Loss from operations (1,521) 215 (11,278) (2,390)    
Interest income 240 266 624 901    
Interest expense (80) (116) (213) (351)    
Interest expense-financing fees (16) (22) (59) (63)    
Other income 114 (18) 258 171    
Unallocated corporate expenses [1] (2,145) (2,087) (6,378) (6,112)    
Loss from continuing operations before taxes (3,408) (1,762) (17,046) (7,844)    
Loss from continuing operations before taxes (3,408) (1,762) (17,046) (7,844) $ (10,665) $ (15,134)
Treatment [Member]            
Segment Reporting [Line Items]            
Revenue from external customers 11,601 13,114 27,768 33,696    
Services [Member]            
Segment Reporting [Line Items]            
Revenue from external customers 6,347 4,340 14,191 12,263    
Operating Segments [Member] | Treatment [Member]            
Segment Reporting [Line Items]            
Revenue from external customers 11,601 13,114 27,768 33,696    
Cost of Goods Sold:            
Payroll and benefits expenses 5,728 4,809 15,950 13,988    
Material and supplies expenses 1,969 2,158 4,887 4,744    
Disposal expenses 1,104 1,075 3,470 2,391    
Transportation expenses 260 361 1,085 1,222    
Subcontract expenses    
Other cost of goods sold [2] 2,765 2,445 8,087 7,269    
Total cost of goods sold 11,826 10,848 33,479 29,614    
Gross profit (225) 2,266 (5,711) 4,082    
SG&A:            
Payroll and benefits 916 947 2,685 2,763    
Other SG&A [3] 416 386 1,371 1,276    
Total SG&A 1,332 1,333 4,056 4,039    
R&D 165 257 584 780    
Gain on disposal of property and equipment 4 3    
Loss from operations (1,722) 672 (10,351) (740)    
Operating Segments [Member] | Services [Member]            
Segment Reporting [Line Items]            
Revenue from external customers 6,347 4,340 14,191 12,263    
Cost of Goods Sold:            
Payroll and benefits expenses 2,720 2,358 7,142 6,245    
Material and supplies expenses    
Disposal expenses    
Transportation expenses    
Subcontract expenses 1,088 118 1,759 1,184    
Other cost of goods sold [2] 1,762 1,573 4,412 4,155    
Total cost of goods sold 5,570 4,049 13,313 11,584    
Gross profit 777 291 878 679    
SG&A:            
Payroll and benefits 399 547 1,561 1,732    
Other SG&A [3] 179 199 242 573    
Total SG&A 578 746 1,803 2,305    
R&D 3 2 7 29    
Gain on disposal of property and equipment (5) (5) (5)    
Loss from operations $ 201 $ (457) $ (927) $ (1,650)    
[1] The following table reflects the unallocated corporate expenses. “Other” unallocated corporate expenses consists of repair and maintenance, depreciation and amortization, travel, public company, outside services, general and R&D expenses. (in thousands)
[2] Other cost of goods sold for each reportable segment includes:
[3] Other SG&A for each reportable segment includes: