Quarterly report [Sections 13 or 15(d)]

Schedule of Segment Reporting Information (Details)

v3.25.3
Schedule of Segment Reporting Information (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2025
Sep. 30, 2024
Sep. 30, 2025
Sep. 30, 2024
Segment Reporting Information [Line Items]        
Revenue from external customers $ 17,454 $ 16,812 $ 45,959 $ 44,415
Cost of goods sold:        
Payroll and benefit expenses 7,167 6,911 20,233 19,035
Material and supplies expenses 2,158 1,035 4,744 2,876
Disposal expenses 1,075 788 2,391 4,211
Transportation expenses 361 322 1,222 837
Subcontract expenses 118 2,135 1,184 6,498
Other cost of goods sold [1] 4,018 4,287 11,424 11,550
Total cost of goods sold 14,897 15,478 41,198 45,007
Gross (loss) profit 2,557 1,334 4,761 (592)
SG&A:        
Payroll and benefits 2,491 2,234 7,364 6,461
Other SG&A [2] 1,592 1,398 4,864 4,170
Total SG&A 4,083 3,632 12,228 10,631
Research and development 342 303 1,037 872
(Gain) loss on disposal of property and equipment 4 (2) 1
Loss from operations (1,872) (2,601) (8,502) (12,096)
Interest income 266 292 901 679
Interest expense (116) (121) (351) (346)
Interest expense-financing fees (22) (18) (63) (47)
Other income (18) 59 171 61
Loss from continuing operations before taxes (1,762) (2,389) (7,844) (11,749)
Income tax expense 6,417 4,300
Loss from continuing operations, net of taxes (1,762) (8,806) (7,844) (16,049)
Treatment [Member]        
Segment Reporting Information [Line Items]        
Revenue from external customers 13,114 9,064 33,696 26,116
Services [Member]        
Segment Reporting Information [Line Items]        
Revenue from external customers 4,340 7,748 12,263 18,299
Operating Segments [Member] | Treatment [Member]        
Segment Reporting Information [Line Items]        
Revenue from external customers 13,114 9,064 33,696 26,116
Cost of goods sold:        
Payroll and benefit expenses 4,809 4,275 13,988 11,970
Material and supplies expenses 2,158 1,035 4,744 2,876
Disposal expenses 1,075 788 2,391 4,211
Transportation expenses 361 322 1,222 837
Subcontract expenses
Other cost of goods sold [1] 2,445 2,234 7,269 7,061
Total cost of goods sold 10,848 8,654 29,614 26,955
Gross (loss) profit 2,266 410 4,082 (839)
SG&A:        
Payroll and benefits 947 743 2,763 2,145
Other SG&A [2] 386 341 1,276 1,079
Total SG&A 1,333 1,084 4,039 3,224
Research and development 257 205 780 609
(Gain) loss on disposal of property and equipment 4   3
Loss from operations 672 (879) (740) (4,672)
Operating Segments [Member] | Services [Member]        
Segment Reporting Information [Line Items]        
Revenue from external customers 4,340 7,748 12,263 18,299
Cost of goods sold:        
Payroll and benefit expenses 2,358 2,636 6,245 7,065
Material and supplies expenses
Disposal expenses
Transportation expenses
Subcontract expenses 118 2,135 1,184 6,498
Other cost of goods sold [1] 1,573 2,053 4,155 4,489
Total cost of goods sold 4,049 6,824 11,584 18,052
Gross (loss) profit 291 924 679 247
SG&A:        
Payroll and benefits 547 643 1,732 1,799
Other SG&A [2] 199 172 573 474
Total SG&A 746 815 2,305 2,273
Research and development 2 34 29 87
(Gain) loss on disposal of property and equipment   (5) 1
Loss from operations (457) 75 (1,650) (2,114)
Operating Segments [Member] | Segments Total [Member]        
Segment Reporting Information [Line Items]        
Revenue from external customers 17,454 16,812 45,959 44,415
Cost of goods sold:        
Payroll and benefit expenses 7,167 6,911 20,233 19,035
Material and supplies expenses 2,158 1,035 4,744 2,876
Disposal expenses 1,075 788 2,391 4,211
Transportation expenses 361 322 1,222 837
Subcontract expenses 118 2,135 1,184 6,498
Other cost of goods sold [1] 4,018 4,287 11,424 11,550
Total cost of goods sold 14,897 15,478 41,198 45,007
Gross (loss) profit 2,557 1,334 4,761 (592)
SG&A:        
Payroll and benefits 1,494 1,386 4,495 3,944
Other SG&A [2] 585 513 1,849 1,553
Total SG&A 2,079 1,899 6,344 5,497
Research and development 259 239 809 696
(Gain) loss on disposal of property and equipment 4   (2) 1
Loss from operations 215 (804) (2,390) (6,786)
Intersegment Eliminations [Member] | Corporate Segment and Other Operating Segment [Member]        
Segment Reporting Information [Line Items]        
Revenue from external customers [3]
Cost of goods sold:        
Payroll and benefit 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 (loss) profit [3]
SG&A:        
Payroll and benefits [3] 997 848 2,869 2,517
Other SG&A [2],[3] 1,007 885 3,015 2,617
Total SG&A [3] 2,004 1,733 5,884 5,134
Research and development [3] 83 64 228 176
(Gain) loss on disposal of property and equipment [3]  
Loss from operations [3] $ (2,087) $ (1,797) $ (6,112) $ (5,310)
[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.