Quarterly report [Sections 13 or 15(d)]

Schedule of Segment Reporting Information (Details)

v3.26.1
Schedule of Segment Reporting Information (Details) - USD ($)
$ in Thousands
 3 Months Ended 12 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Dec. 31, 2025
Dec. 31, 2024
Segment Reporting [Line Items]        
Revenue from external customers $ 11,126 $ 13,919    
Cost of Goods Sold:        
Payroll and benefits expenses 6,892 6,450    
Material and supplies expenses 1,345 1,351    
Disposal expenses 1,455 220    
Transportation expenses 389 495    
Subcontract expenses 5 908    
Other cost of goods sold [1] 3,921 3,838    
Total cost of goods sold 14,007 13,262    
Gross profit (2,881) 657    
SG&A:        
Payroll and benefits 2,484 2,342    
Other SG&A [2] 1,815 1,673    
Total SG&A 4,299 4,015    
Research and development 303 383    
Gain on disposal of property and equipment (5)    
Loss from operations (7,483) (3,736)    
Interest income 180 335    
Interest expense (59) (112)    
Interest expense-financing fees (21) (20)    
Other income 8 33    
Loss from continuing operations before taxes (7,375) (3,500) $ (10,665) $ (15,134)
Income tax expense    
Loss from continuing operations, net of taxes (7,375) (3,500)    
Treatment [Member]        
Segment Reporting [Line Items]        
Revenue from external customers 7,878 9,186    
Services [Member]        
Segment Reporting [Line Items]        
Revenue from external customers 3,248 4,733    
Operating Segments [Member] | Treatment [Member]        
Segment Reporting [Line Items]        
Revenue from external customers 7,878 9,186    
Cost of Goods Sold:        
Payroll and benefits expenses 4,764 4,437    
Material and supplies expenses 1,345 1,351    
Disposal expenses 1,455 220    
Transportation expenses 389 495    
Subcontract expenses    
Other cost of goods sold [1] 2,758 2,433    
Total cost of goods sold 10,711 8,936    
Gross profit (2,833) 250    
SG&A:        
Payroll and benefits 877 873    
Other SG&A [2] 562 483    
Total SG&A 1,439 1,356    
Research and development 230 291    
Gain on disposal of property and equipment      
Loss from operations (4,502) (1,397)    
Operating Segments [Member] | Services [Member]        
Segment Reporting [Line Items]        
Revenue from external customers 3,248 4,733    
Cost of Goods Sold:        
Payroll and benefits expenses 2,128 2,013    
Material and supplies expenses    
Disposal expenses    
Transportation expenses    
Subcontract expenses 5 908    
Other cost of goods sold [1] 1,163 1,405    
Total cost of goods sold 3,296 4,326    
Gross profit (48) 407    
SG&A:        
Payroll and benefits 610 538    
Other SG&A [2] 207 198    
Total SG&A 817 736    
Research and development 1 23    
Gain on disposal of property and equipment   (5)    
Loss from operations (866) (347)    
Operating Segments [Member] | Segments Total [Member]        
Segment Reporting [Line Items]        
Revenue from external customers 11,126 13,919    
Cost of Goods Sold:        
Payroll and benefits expenses 6,892 6,450    
Material and supplies expenses 1,345 1,351    
Disposal expenses 1,455 220    
Transportation expenses 389 495    
Subcontract expenses 5 908    
Other cost of goods sold [1] 3,921 3,838    
Total cost of goods sold 14,007 13,262    
Gross profit (2,881) 657    
SG&A:        
Payroll and benefits 1,487 1,411    
Other SG&A [2] 769 681    
Total SG&A 2,256 2,092    
Research and development 231 314    
Gain on disposal of property and equipment   (5)    
Loss from operations (5,368) (1,744)    
Intersegment Eliminations [Member] | Corporate Segment and Other Operating Segment [Member]        
Segment Reporting [Line Items]        
Revenue from external customers [3]    
Cost of Goods Sold:        
Payroll and benefits expenses [3]    
Material and supplies expenses [3]    
Disposal expenses [3]    
Transportation expenses [3]    
Subcontract expenses [3]    
Other cost of goods sold [1],[3]    
Total cost of goods sold [3]    
Gross profit [3]    
SG&A:        
Payroll and benefits [3] 997 931    
Other SG&A [2],[3] 1,046 992    
Total SG&A [3] 2,043 1,923    
Research and development [3] 72 69    
Gain on disposal of property and equipment [3]      
Loss from operations [3] $ (2,115) $ (1,992)    
[1] Other cost of goods sold for each reportable segment includes:
[2] Other SG&A for each reportable segment and Corporate includes:
[3] Amounts reflect the activity for corporate headquarters not included in the segment reporting information.