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Business Segments - Narrative (Details) $ in Thousands |  |  |  | 3 Months Ended | 7 Months Ended | 12 Months Ended
--- | --- | --- | --- | --- | --- | ---
Nov. 17, 2023 USD ($) | Jun. 30, 2023 USD ($) | Mar. 30, 2023 USD ($) | Mar. 31, 2024 USD ($) segment | Mar. 31, 2023 USD ($) | Mar. 31, 2024 USD ($) | Dec. 31, 2023 segment
Segment Reporting Information |  |  |  |  |  |  |
Number of reportable segments | segment |  |  |  | 2 |  |  | 3
Proceeds from business dispositions |  |  |  | $ 0 | $ 5,344 |  |
Loss on asset divestiture |  |  |  | 0 | 2,033 |  |
Total net sales |  |  |  | 124,320 | 115,488 |  |
Other income (expense) - net |  |  |  | 3,536 | (1,827) |  |
Cougar purchase accounting adjustment |  |  |  |  |  |  |
Segment Reporting Information |  |  |  |  |  |  |
Consideration transferred to acquire operating assets | $ 1,644 |  |  |  |  |  |
Bridge Grid Deck Product | Discontinued Operations |  |  |  |  |  |  |
Segment Reporting Information |  |  |  |  |  |  |
Total net sales |  |  |  | 810 | $ 1,491 |  |
Other income (expense) - net |  |  |  | 73 |  | $ 1,476 |
Personnel expenses |  |  |  | $ 111 |  | 740 |
Inventory write-down |  |  |  |  |  | 474 |
Other exit costs |  |  |  |  |  | $ 262 |
Rail Products |  |  |  |  |  |  |
Segment Reporting Information |  |  |  |  |  |  |
Proceeds from business dispositions |  | $ 2,362 |  |  |  |  |
Loss on asset divestiture |  | $ (1,009) | $ 2,065 |  |  |  |
Coatings and Measurement |  |  |  |  |  |  |
Segment Reporting Information |  |  |  |  |  |  |
Proceeds from business dispositions |  |  | $ 5,344 |  |  |  |

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