Schedule of Segment Reporting Information (Details) - USD ($) |
3 Months Ended | 6 Months Ended | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
Jun. 30, 2025 |
Jun. 30, 2024 |
Jun. 30, 2025 |
Jun. 30, 2024 |
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| Segment Reporting Information [Line Items] | ||||||||||
| Revenue from external customers | $ 14,586,000 | $ 13,986,000 | $ 28,505,000 | $ 27,603,000 | ||||||
| Cost of goods sold: | ||||||||||
| Payroll and benefit expenses | 6,616,000 | 5,920,000 | 13,066,000 | 12,124,000 | ||||||
| Material and supplies expenses | 1,235,000 | 1,078,000 | 2,586,000 | 1,841,000 | ||||||
| Disposal expenses | 1,095,000 | 1,854,000 | 1,316,000 | 3,423,000 | ||||||
| Transportation expenses | 366,000 | 217,000 | 861,000 | 515,000 | ||||||
| Subcontract expenses | 158,000 | 2,554,000 | 1,066,000 | 4,364,000 | ||||||
| Other cost of goods sold | [1] | 3,569,000 | 3,669,000 | 7,406,000 | 7,262,000 | |||||
| Total cost of goods sold | 13,039,000 | 15,292,000 | 26,301,000 | 29,529,000 | ||||||
| Gross loss | 1,547,000 | (1,306,000) | 2,204,000 | (1,926,000) | ||||||
| SG&A: | ||||||||||
| Payroll and benefits | 2,529,000 | 2,068,000 | 4,871,000 | 4,227,000 | ||||||
| Other SG&A | [2] | 1,601,000 | 1,387,000 | 3,274,000 | 2,772,000 | |||||
| Total SG&A | 4,130,000 | 3,455,000 | 8,145,000 | 6,999,000 | ||||||
| Research and development | 312,000 | 273,000 | 695,000 | 569,000 | ||||||
| Loss on disposal of property and equiment | (1,000) | 1,000 | (6,000) | 1,000 | ||||||
| Loss from operations | (2,894,000) | (5,035,000) | (6,630,000) | (9,495,000) | ||||||
| Interest income | 301,000 | 213,000 | 636,000 | 387,000 | ||||||
| Interest expense | (124,000) | (109,000) | (236,000) | (225,000) | ||||||
| Interest expense-financing fees | (21,000) | (16,000) | (41,000) | (29,000) | ||||||
| Other income | 155,000 | 1,000 | 188,000 | 2,000 | ||||||
| Loss from continuing operations before taxes | (2,583,000) | (4,946,000) | (6,083,000) | (9,360,000) | ||||||
| Income tax benefit | (1,161,000) | (2,117,000) | ||||||||
| Loss from continuing operations, net of taxes | (2,583,000) | (3,785,000) | (6,083,000) | (7,243,000) | ||||||
| Treatment [Member] | ||||||||||
| Segment Reporting Information [Line Items] | ||||||||||
| Revenue from external customers | 11,397,000 | 8,343,000 | 20,583,000 | 17,052,000 | ||||||
| Services [Member] | ||||||||||
| Segment Reporting Information [Line Items] | ||||||||||
| Revenue from external customers | 3,189,000 | 5,643,000 | 7,922,000 | 10,551,000 | ||||||
| Operating Segments [Member] | Treatment [Member] | ||||||||||
| Segment Reporting Information [Line Items] | ||||||||||
| Revenue from external customers | 11,397,000 | 8,343,000 | 20,583,000 | 17,052,000 | ||||||
| Cost of goods sold: | ||||||||||
| Payroll and benefit expenses | 4,742,000 | 3,943,000 | 9,179,000 | 7,695,000 | ||||||
| Material and supplies expenses | 1,235,000 | 1,078,000 | 2,586,000 | 1,841,000 | ||||||
| Disposal expenses | 1,095,000 | 1,854,000 | 1,316,000 | 3,423,000 | ||||||
| Transportation expenses | 366,000 | 217,000 | 861,000 | 515,000 | ||||||
| Subcontract expenses | ||||||||||
| Other cost of goods sold | [1] | 2,393,000 | 2,448,000 | 4,825,000 | 4,827,000 | |||||
| Total cost of goods sold | 9,831,000 | 9,540,000 | 18,767,000 | 18,301,000 | ||||||
| Gross loss | 1,566,000 | (1,197,000) | 1,816,000 | (1,249,000) | ||||||
| SG&A: | ||||||||||
| Payroll and benefits | 942,000 | 732,000 | 1,815,000 | 1,402,000 | ||||||
| Other SG&A | [2] | 408,000 | 343,000 | 891,000 | 738,000 | |||||
| Total SG&A | 1,350,000 | 1,075,000 | 2,706,000 | 2,140,000 | ||||||
| Research and development | 232,000 | 186,000 | 523,000 | 404,000 | ||||||
| Loss on disposal of property and equiment | (1,000) | (1,000) | ||||||||
| Loss from operations | (15,000) | (2,458,000) | (1,412,000) | (3,793,000) | ||||||
| Operating Segments [Member] | Services [Member] | ||||||||||
| Segment Reporting Information [Line Items] | ||||||||||
| Revenue from external customers | 3,189,000 | 5,643,000 | 7,922,000 | 10,551,000 | ||||||
| Cost of goods sold: | ||||||||||
| Payroll and benefit expenses | 1,874,000 | 1,977,000 | 3,887,000 | 4,429,000 | ||||||
| Material and supplies expenses | ||||||||||
| Disposal expenses | ||||||||||
| Transportation expenses | ||||||||||
| Subcontract expenses | 158,000 | 2,554,000 | 1,066,000 | 4,364,000 | ||||||
| Other cost of goods sold | [1] | 1,176,000 | 1,221,000 | 2,581,000 | 2,435,000 | |||||
| Total cost of goods sold | 3,208,000 | 5,752,000 | 7,534,000 | 11,228,000 | ||||||
| Gross loss | (19,000) | (109,000) | 388,000 | (677,000) | ||||||
| SG&A: | ||||||||||
| Payroll and benefits | 647,000 | 501,000 | 1,185,000 | 1,156,000 | ||||||
| Other SG&A | [2] | 176,000 | 165,000 | 374,000 | 302,000 | |||||
| Total SG&A | 823,000 | 666,000 | 1,559,000 | 1,458,000 | ||||||
| Research and development | 4,000 | 24,000 | 27,000 | 52,000 | ||||||
| Loss on disposal of property and equiment | 1,000 | (5,000) | 1,000 | |||||||
| Loss from operations | (846,000) | (800,000) | (1,193,000) | (2,188,000) | ||||||
| Operating Segments [Member] | Segments Total [Member] | ||||||||||
| Segment Reporting Information [Line Items] | ||||||||||
| Revenue from external customers | 14,586,000 | 13,986,000 | 28,505,000 | 27,603,000 | ||||||
| Cost of goods sold: | ||||||||||
| Payroll and benefit expenses | 6,616,000 | 5,920,000 | 13,066,000 | 12,124,000 | ||||||
| Material and supplies expenses | 1,235,000 | 1,078,000 | 2,586,000 | 1,841,000 | ||||||
| Disposal expenses | 1,095,000 | 1,854,000 | 1,316,000 | 3,423,000 | ||||||
| Transportation expenses | 366,000 | 217,000 | 861,000 | 515,000 | ||||||
| Subcontract expenses | 158,000 | 2,554,000 | 1,066,000 | 4,364,000 | ||||||
| Other cost of goods sold | [1] | 3,569,000 | 3,669,000 | 7,406,000 | 7,262,000 | |||||
| Total cost of goods sold | 13,039,000 | 15,292,000 | 26,301,000 | 29,529,000 | ||||||
| Gross loss | 1,547,000 | (1,306,000) | 2,204,000 | (1,926,000) | ||||||
| SG&A: | ||||||||||
| Payroll and benefits | 1,589,000 | 1,233,000 | 3,000,000 | 2,558,000 | ||||||
| Other SG&A | [2] | 584,000 | 508,000 | 1,265,000 | 1,040,000 | |||||
| Total SG&A | 2,173,000 | 1,741,000 | 4,265,000 | 3,598,000 | ||||||
| Research and development | 236,000 | 210,000 | 550,000 | 456,000 | ||||||
| Loss on disposal of property and equiment | (1,000) | 1,000 | (6,000) | 1,000 | ||||||
| Loss from operations | (861,000) | (3,258,000) | (2,605,000) | (5,981,000) | ||||||
| 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] | 940,000 | 835,000 | 1,871,000 | 1,669,000 | |||||
| Other SG&A | [2],[3] | 1,017,000 | 879,000 | 2,009,000 | 1,732,000 | |||||
| Total SG&A | [3] | 1,957,000 | 1,714,000 | 3,880,000 | 3,401,000 | |||||
| Research and development | [3] | 76,000 | 63,000 | 145,000 | 113,000 | |||||
| Loss on disposal of property and equiment | [3] | |||||||||
| Loss from operations | [3] | $ (2,033,000) | $ (1,777,000) | $ (4,025,000) | $ (3,514,000) | |||||
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