Quarterly report [Sections 13 or 15(d)]

Schedule of Segment Reporting Information (Details)

v3.25.1
Schedule of Segment Reporting Information (Details) - USD ($)
 3 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Segment Reporting Information [Line Items]    
Revenue from external customers $ 13,919,000 $ 13,617,000
Cost of goods sold:    
Payroll and benefit expenses 6,450,000 6,203,000
Material and supplies expenses 1,351,000 763,000
Disposal expenses 220,000 1,569,000
Transportation expenses 495,000 298,000
Subcontract expenses 908,000 1,810,000
Other cost of goods sold [1] 3,838,000 3,594,000
Total cost of goods sold 13,262,000 14,237,000
Gross loss 657,000 (620,000)
SG&A:    
Payroll and benefits 2,342,000 2,159,000
Other SG&A (3) 1,673,000 [2] 1,385,000
Total SG&A 4,015,000 3,544,000
Research and development 383,000 296,000
Gain on disposal of property and equipment (5,000)
Loss from operations (3,736,000) (4,460,000)
Interest income 335,000 174,000
Interest expense (112,000) (116,000)
Interest expense-financing fees (20,000) (13,000)
Other income 33,000 1,000
Loss from continuing operations before taxes (3,500,000) (4,414,000)
Income tax benefit (956,000)
Loss from continuing operations, net of taxes (3,500,000) (3,458,000)
Treatment [Member]    
Segment Reporting Information [Line Items]    
Revenue from external customers 9,186,000 8,709,000
Services [Member]    
Segment Reporting Information [Line Items]    
Revenue from external customers 4,733,000 4,908,000
Operating Segments [Member] | Treatment [Member]    
Segment Reporting Information [Line Items]    
Revenue from external customers 9,186,000 8,709,000
Cost of goods sold:    
Payroll and benefit expenses 4,437,000 3,751,000
Material and supplies expenses 1,351,000 763,000
Disposal expenses 220,000 1,569,000
Transportation expenses 495,000 298,000
Subcontract expenses
Other cost of goods sold [1] 2,433,000 2,380,000
Total cost of goods sold 8,936,000 8,761,000
Gross loss 250,000 (52,000)
SG&A:    
Payroll and benefits 873,000 670,000
Other SG&A (3) 483,000 [2] 395,000
Total SG&A 1,356,000 1,065,000
Research and development 291,000 218,000
Gain on disposal of property and equipment  
Loss from operations (1,397,000) (1,335,000)
Operating Segments [Member] | Services [Member]    
Segment Reporting Information [Line Items]    
Revenue from external customers 4,733,000 4,908,000
Cost of goods sold:    
Payroll and benefit expenses 2,013,000 2,452,000
Material and supplies expenses
Disposal expenses
Transportation expenses
Subcontract expenses 908,000 1,810,000
Other cost of goods sold [1] 1,405,000 1,214,000
Total cost of goods sold 4,326,000 5,476,000
Gross loss 407,000 (568,000)
SG&A:    
Payroll and benefits 538,000 655,000
Other SG&A (3) 198,000 [2] 137,000
Total SG&A 736,000 792,000
Research and development 23,000 28,000
Gain on disposal of property and equipment (5,000)  
Loss from operations (347,000) (1,388,000)
Operating Segments [Member] | Segments Total [Member]    
Segment Reporting Information [Line Items]    
Revenue from external customers 13,919,000 13,617,000
Cost of goods sold:    
Payroll and benefit expenses 6,450,000 6,203,000
Material and supplies expenses 1,351,000 763,000
Disposal expenses 220,000 1,569,000
Transportation expenses 495,000 298,000
Subcontract expenses 908,000 1,810,000
Other cost of goods sold [1] 3,838,000 3,594,000
Total cost of goods sold 13,262,000 14,237,000
Gross loss 657,000 (620,000)
SG&A:    
Payroll and benefits 1,411,000 1,325,000
Other SG&A (3) 681,000 [2] 532,000
Total SG&A 2,092,000 1,857,000
Research and development 314,000 246,000
Gain on disposal of property and equipment (5,000)  
Loss from operations (1,744,000) (2,723,000)
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 [3]
SG&A:    
Payroll and benefits [3] 931,000 834,000
Other SG&A (3) [3] 992,000 [2] 853,000
Total SG&A [3] 1,923,000 1,687,000
Research and development [3] 69,000 50,000
Gain on disposal of property and equipment [3]  
Loss from operations [3] $ (1,992,000) $ (1,737,000)
[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.