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Schedule of Segment Reporting Information (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2024 | Sep. 30, 2023 | Sep. 30, 2024 | Sep. 30, 2023
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |
Revenue from external customers |  | $ 16,812 |  | $ 21,877 |  | $ 44,415 |  | $ 67,016 |
Intercompany revenues |  |  |  |  |  |  |  |  |
Gross profit |  | 1,334 |  | 4,549 |  | (592) |  | 12,074 |
Research and development |  | 303 |  | 120 |  | 872 |  | 340 |
Interest income |  | 292 |  | 146 |  | 679 |  | 445 |
Interest expense |  | (121) |  | (89) |  | (346) |  | (189) |
Interest expense-financing fees |  | (18) |  | (36) |  | (47) |  | (80) |
Depreciation and amortization |  | 433 |  | 686 |  | 1,295 |  | 2,124 |
Segment income (loss) |  | (8,806) | [1] | 246 |  | (16,049) | [1] | 448 |
Expenditures for segment assets |  | 1,383 | [2] | 340 | [3] | 2,224 | [2] | 1,386 | [3]
Treatment [Member] |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |
Revenue from external customers |  | 9,064 |  | 10,795 |  | 26,116 |  | 33,223 |
Services [Member] |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |
Revenue from external customers |  | 7,748 |  | 11,082 |  | 18,299 |  | 33,793 |
Operating Segments [Member] | Treatment [Member] |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |
Revenue from external customers |  | 9,064 |  | 10,795 |  | 26,116 |  | 33,223 |
Intercompany revenues |  | 13 |  | 4 |  | 67 |  | 234 |
Gross profit |  | 410 |  | 1,494 |  | (839) |  | 5,237 |
Research and development |  | 205 |  | 102 |  | 609 |  | 260 |
Interest income |  | 6 |  |  |  | 7 |  |  |
Interest expense |  | (37) |  | (23) |  | (107) |  | (68) |
Interest expense-financing fees |  |  |  |  |  |  |  |  |
Depreciation and amortization |  | 370 |  | 584 |  | 1,104 |  | 1,745 |
Segment income (loss) |  | (4,902) |  | 1,014 |  | (7,416) |  | 2,619 |
Expenditures for segment assets |  | 1,203 |  | 333 |  | 1,820 |  | 1,376 |
Operating Segments [Member] | Services [Member] |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |
Revenue from external customers |  | 7,748 |  | 11,082 |  | 18,299 |  | 33,793 |
Intercompany revenues |  | 23 |  | 88 |  | 52 |  | 124 |
Gross profit |  | 924 |  | 3,055 |  | 247 |  | 6,837 |
Research and development |  | 34 |  | 1 |  | 87 |  | 11 |
Interest income |  |  |  |  |  |  |  |  |
Interest expense |  | (3) |  | (1) |  | (4) |  | (2) |
Interest expense-financing fees |  |  |  |  |  |  |  |  |
Depreciation and amortization |  | 44 |  | 88 |  | 133 |  | 337 |
Segment income (loss) |  | (2,294) |  | 1,120 |  | (3,713) |  | 2,933 |
Expenditures for segment assets |  | 180 |  | 7 |  | 404 |  | 10 |
Operating Segments [Member] | Segments Total [Member] |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |
Revenue from external customers |  | 16,812 |  | 21,877 |  | 44,415 |  | 67,016 |
Intercompany revenues |  | 36 |  | 92 |  | 119 |  | 358 |
Gross profit |  | 1,334 |  | 4,549 |  | (592) |  | 12,074 |
Research and development |  | 239 |  | 103 |  | 696 |  | 271 |
Interest income |  | 6 |  |  |  | 7 |  |  |
Interest expense |  | (40) |  | (24) |  | (111) |  | (70) |
Interest expense-financing fees |  |  |  |  |  |  |  |  |
Depreciation and amortization |  | 414 |  | 672 |  | 1,237 |  | 2,082 |
Segment income (loss) |  | (7,196) |  | 2,134 |  | (11,129) |  | 5,552 |
Expenditures for segment assets |  | 1,383 |  | 340 |  | 2,224 |  | 1,386 |
Intersegment Eliminations [Member] | Corporate Segment and Other Operating Segment [Member] |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |
Revenue from external customers | [4] |  |  |  |  |  |  |  |
Intercompany revenues | [4] |  |  |  |  |  |  |  |
Gross profit | [4] |  |  |  |  |  |  |  |
Research and development | [4] | 64 |  | 17 |  | 176 |  | 69 |
Interest income | [4] | 286 |  | 146 |  | 672 |  | 445 |
Interest expense | [4] | (81) |  | (65) |  | (235) |  | (119) |
Interest expense-financing fees | [4] | (18) |  | (36) |  | (47) |  | (80) |
Depreciation and amortization | [4] | 19 |  | 14 |  | 58 |  | 42 |
Segment income (loss) | [4] | (1,610) |  | (1,888) |  | (4,920) |  | (5,104) |
Expenditures for segment assets | [4] |  |  |  |  |  |  |  |
[1] | Includes tax expense recorded in the amount of approximately $6,417,000 in the third quarter of 2024 in connection with a full valuation allowance against the Company’s U.S. deferred tax assets (see “Note 13 – Income Taxes” below for a discussion of this tax expense).
[2] | Net of financed amount of $361,000 and $406,000 for the three and nine months ended September 30, 2024, respectively.
[3] | Net of financed amount of $152,000 and $309,000 for the three and nine months ended September 30, 2023, respectively.
[4] | Amounts reflect the activity for corporate headquarters not included in the segment information.

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