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Industry Segments - Schedule of Segment Information (Details) - USD ($) $ in Thousands |  | 3 Months Ended | 9 Months Ended |
--- | --- | --- | --- | ---
Apr. 04, 2025 | Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024 | Dec. 31, 2024
Segment Reporting Information [Line Items] |  |  |  |  |  |
Net sales |  | $ 19,697 | $ 20,878 | $ 56,183 | $ 62,642 |
Cost of goods sold - material |  | 8,173 | 10,657 | 25,351 | 32,387 |
Cost of goods sold - other |  | 5,683 | 7,213 | 17,059 | 23,048 |
Gross profit |  | 5,841 | 3,008 | 13,773 | 7,207 |
Selling, general and administrative expense |  | 6,253 | 5,034 | 17,567 | 15,518 |
Acquisition costs and other |  | 398 | 2 | 665 | 54 |
Asset impairments |  | 0 | 0 | 1,622 | 0 |
Gain on lease modification | $ (500) | 0 | (67) | (544) | (67) |
Interest expense (income), net |  | (447) | 124 | (347) | 323 |
Income taxes |  | 58 | 5,807 | (32) | 4,413 |
Other expense (income) |  | (296) | (91) | (581) | (303) |
Loss from continuing operations |  | (125) | (7,801) | (4,577) | (12,731) |
Identifiable assets |  | 119,889 |  | 119,889 |  | $ 147,250
Continuing Operations |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Identifiable assets |  | 119,889 |  | 119,889 |  | 85,226
Operating segment | Specialty Chemicals |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Net sales |  | 19,697 | 20,878 | 56,183 | 62,642 |
Cost of goods sold - material |  | 8,173 | 10,657 | 25,351 | 32,387 |
Cost of goods sold - other |  | 5,683 | 7,088 | 17,059 | 22,653 |
Gross profit |  | 5,841 | 3,133 | 13,773 | 7,602 |
Selling, general and administrative expense |  | 3,696 | 2,747 | 9,267 | 8,226 |
Acquisition costs and other |  | 0 | 0 | 92 | 0 |
Asset impairments |  | 0 |  | 0 |  |
Gain on lease modification |  | 0 | 0 | 0 | 0 |
Interest expense (income), net |  | 7 | 19 | 38 | 57 |
Income taxes |  | 0 | 0 | 0 | 0 |
Other expense (income) |  | 0 | 0 | 0 | 0 |
Loss from continuing operations |  | 2,138 | 367 | 4,376 | (681) |
Operating segment | Specialty Chemicals | Continuing Operations |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Identifiable assets |  | 39,130 |  | 39,130 |  | 38,928
Corporate & Other |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Net sales |  | 0 | 0 | 0 | 0 |
Cost of goods sold - material |  | 0 | 0 | 0 | 0 |
Cost of goods sold - other |  | 0 | 125 | 0 | 395 |
Gross profit |  | 0 | (125) | 0 | (395) |
Selling, general and administrative expense |  | 2,557 | 2,287 | 8,300 | 7,292 |
Acquisition costs and other |  | 398 | 2 | 573 | 54 |
Asset impairments |  | 0 |  | 1,622 |  |
Gain on lease modification |  | 0 | (67) | (544) | (67) |
Interest expense (income), net |  | (454) | 105 | (385) | 266 |
Income taxes |  | 58 | 5,807 | (32) | 4,413 |
Other expense (income) |  | (296) | (91) | (581) | (303) |
Loss from continuing operations |  | (2,263) | $ (8,168) | (8,953) | $ (12,050) |
Corporate & Other | Continuing Operations |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Identifiable assets |  | $ 80,759 |  | $ 80,759 |  | $ 46,298

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