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Schedule of Segment Reporting Information (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2024 | Jun. 30, 2023 | Jun. 30, 2024 | Jun. 30, 2023
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |
Revenue from external customers |  | $ 13,986 |  | $ 25,032 |  | $ 27,603 |  | $ 45,139 |
Intercompany revenues |  |  |  |  |  |  |  |  |
Gross profit |  | (1,306) |  | 4,516 |  | (1,926) |  | 7,525 |
Research and development |  | 273 |  | 121 |  | 569 |  | 220 |
Interest income |  | 213 |  | 172 |  | 387 |  | 298 |
Interest expense |  | (109) |  | (47) |  | (225) |  | (100) |
Interest expense-financing fees |  | (16) |  | (24) |  | (29) |  | (44) |
Depreciation and amortization |  | 430 |  | 692 |  | 862 |  | 1,439 |
Segment income (loss) |  | (3,785) |  | 519 |  | (7,243) |  | 202 |
Expenditures for segment assets |  | 597 | [1] | 298 | [2] | 841 | [1] | 1,047 | [2]
Treatment [Member] |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |
Revenue from external customers |  | 8,343 |  | 12,834 |  | 17,052 |  | 22,428 |
Services [Member] |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |
Revenue from external customers |  | 5,643 |  | 12,198 |  | 10,551 |  | 22,711 |
Operating Segments [Member] | Treatment [Member] |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |
Revenue from external customers |  | 8,343 |  | 12,834 |  | 17,052 |  | 22,428 |
Intercompany revenues |  | 9 |  | 26 |  | 54 |  | 230 |
Gross profit |  | (1,197) |  | 2,491 |  | (1,249) |  | 3,743 |
Research and development |  | 186 |  | 91 |  | 404 |  | 158 |
Interest income |  |  |  |  |  |  |  |  |
Interest expense |  | (33) |  | (23) |  | (69) |  | (45) |
Interest expense-financing fees |  |  |  |  |  |  |  |  |
Depreciation and amortization |  | 367 |  | 589 |  | 733 |  | 1,162 |
Segment income (loss) |  | (1,668) |  | 1,273 |  | (2,514) |  | 1,605 |
Expenditures for segment assets |  | 457 |  | 293 |  | 617 |  | 1,043 |
Operating Segments [Member] | Services [Member] |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |
Revenue from external customers |  | 5,643 |  | 12,198 |  | 10,551 |  | 22,711 |
Intercompany revenues |  | 13 |  | 17 |  | 29 |  | 36 |
Gross profit |  | (109) |  | 2,025 |  | (677) |  | 3,782 |
Research and development |  | 24 |  | 7 |  | 52 |  | 10 |
Interest income |  |  |  |  |  |  |  |  |
Interest expense |  | (2) |  |  |  | (2) |  | (1) |
Interest expense-financing fees |  |  |  |  |  |  |  |  |
Depreciation and amortization |  | 44 |  | 89 |  | 89 |  | 249 |
Segment income (loss) |  | (462) |  | 840 |  | (1,419) |  | 1,813 |
Expenditures for segment assets |  | 140 |  | 5 |  | 224 |  | 4 |
Operating Segments [Member] | Segments Total [Member] |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |
Revenue from external customers |  | 13,986 |  | 25,032 |  | 27,603 |  | 45,139 |
Intercompany revenues |  | 22 |  | 43 |  | 83 |  | 266 |
Gross profit |  | (1,306) |  | 4,516 |  | (1,926) |  | 7,525 |
Research and development |  | 210 |  | 98 |  | 456 |  | 168 |
Interest income |  |  |  |  |  |  |  |  |
Interest expense |  | (35) |  | (23) |  | (71) |  | (46) |
Interest expense-financing fees |  |  |  |  |  |  |  |  |
Depreciation and amortization |  | 411 |  | 678 |  | 822 |  | 1,411 |
Segment income (loss) |  | (2,130) |  | 2,113 |  | (3,933) |  | 3,418 |
Expenditures for segment assets |  | 597 |  | 298 |  | 841 |  | 1,047 |
Intersegment Eliminations [Member] | Corporate Segment and Other Operating Segment [Member] |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |
Revenue from external customers | [3] |  |  |  |  |  |  |  |
Intercompany revenues | [3] |  |  |  |  |  |  |  |
Gross profit | [3] |  |  |  |  |  |  |  |
Research and development | [3] | 63 |  | 23 |  | 113 |  | 52 |
Interest income | [3] | 213 |  | 172 |  | 387 |  | 298 |
Interest expense | [3] | (74) |  | (24) |  | (154) |  | (54) |
Interest expense-financing fees | [3] | (16) |  | (24) |  | (29) |  | (44) |
Depreciation and amortization | [3] | 19 |  | 14 |  | 40 |  | 28 |
Segment income (loss) | [3] | (1,655) |  | (1,594) |  | (3,310) |  | (3,216) |
Expenditures for segment assets | [3] |  |  |  |  |  |  |  |
[1] | Net of financed amount of $0 and $44,000 for the three and six months ended June 30, 2024, respectively.
[2] | Net of financed amount of $107,000 and $157,000 for the three and six months ended June 30, 2023, respecti
[3] | Amounts reflect the activity for corporate headquarters not included in the segment information.

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