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Goodwill and Intangible Assets (Details) $ in Millions |  | 3 Months Ended | 9 Months Ended |
--- | --- | --- | --- | ---
Sep. 19, 2023 Facility | Dec. 31, 2023 USD ($) | Sep. 30, 2023 USD ($) | Dec. 31, 2022 USD ($) | Dec. 31, 2023 USD ($) | Dec. 31, 2022 USD ($) | Mar. 31, 2023 USD ($)
Goodwill [Roll Forward] |  |  |  |  |  |  |  |
Goodwill, beginning balance |  |  |  |  |  | $ 165.6 |  |
Acquisition | [1] |  |  |  |  | 0.3 |  |
Effect of exchange rate changes |  |  |  |  |  | 0.8 |  |
Goodwill, ending balance |  |  | $ 166.7 |  |  | 166.7 |  |
Number of coatings facilities sold | Facility |  | 2 |  |  |  |  |  |
Intangible Assets [Abstract] |  |  |  |  |  |  |  |
Gross carrying value |  |  | 136.8 |  |  | 136.8 |  | $ 133.0
Accumulated amortization |  |  | (58.4) |  |  | (58.4) |  | (51.9)
Net intangible assets |  |  | 78.4 |  |  | 78.4 |  | 81.1
Amortization expense |  |  | 2.1 |  | $ 2.0 | 6.1 | $ 6.0 |
Estimated Future Amortization Expense [Abstract] |  |  |  |  |  |  |  |
Remainder of fiscal 2024 |  |  | 2.0 |  |  | 2.0 |  |
2025 |  |  | 8.0 |  |  | 8.0 |  |
2026 |  |  | 8.0 |  |  | 8.0 |  |
2027 |  |  | 8.0 |  |  | 8.0 |  |
2028 |  |  | 8.0 |  |  | 8.0 |  |
2029 |  |  | 7.0 |  |  | 7.0 |  |
Climate Solutions [Member] |  |  |  |  |  |  |  |
Goodwill [Roll Forward] |  |  |  |  |  |  |  |
Goodwill, beginning balance |  |  |  |  |  | 105.7 |  |
Acquisition |  |  |  | $ 1.0 |  | 1.0 |  |
Effect of exchange rate changes |  |  |  |  |  | 0.7 |  |
Goodwill, ending balance |  |  | 107.4 |  |  | 107.4 |  |
Performance Technologies [Member] |  |  |  |  |  |  |  |
Goodwill [Roll Forward] |  |  |  |  |  |  |  |
Goodwill, beginning balance |  |  |  |  |  | 59.9 |  |
Disposition |  |  |  | (0.7) |  | (0.7) |  |
Effect of exchange rate changes |  |  |  |  |  | 0.1 |  |
Goodwill, ending balance |  |  | 59.3 |  |  | 59.3 |  |
Customer Relationships [Member] |  |  |  |  |  |  |  |
Intangible Assets [Abstract] |  |  |  |  |  |  |  |
Gross carrying value |  |  | 63.3 |  |  | 63.3 |  | 60.3
Accumulated amortization |  |  | (26.4) |  |  | (26.4) |  | (23.4)
Net intangible assets |  |  | 36.9 |  |  | 36.9 |  | 36.9
Trade Names [Member] |  |  |  |  |  |  |  |
Intangible Assets [Abstract] |  |  |  |  |  |  |  |
Gross carrying value |  |  | 50.3 |  |  | 50.3 |  | 50.1
Accumulated amortization |  |  | (17.8) |  |  | (17.8) |  | (15.9)
Net intangible assets |  |  | 32.5 |  |  | 32.5 |  | 34.2
Acquired Technology [Member] |  |  |  |  |  |  |  |
Intangible Assets [Abstract] |  |  |  |  |  |  |  |
Gross carrying value |  |  | 23.2 |  |  | 23.2 |  | 22.6
Accumulated amortization |  |  | (14.2) |  |  | (14.2) |  | (12.6)
Net intangible assets |  |  | $ 9.0 |  |  | $ 9.0 |  | $ 10.0
Customer Relationships and Acquired Technology [Member] |  |  |  |  |  |  |  |
Intangible Assets [Abstract] |  |  |  |  |  |  |  |
Intangible assets acquired |  |  |  | $ 2.9 |  |  |  |
[1] | During the second quarter of fiscal 2024, the Company recorded $1.0 million of goodwill in connection with its acquisition of Napps. In addition, the Company wrote-off $0.7 million of goodwill in connection with the sale of two coatings facilities. See Note 2 for additional information.

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