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Restructuring and Other Exit Charges - (Additional Information) (Details) $ in Thousands |  |  | 3 Months Ended | 12 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | --- | ---
Mar. 25, 2026 USD ($) Employee | Jul. 22, 2025 Employee | Jul. 05, 2026 USD ($) | Jun. 29, 2025 USD ($) | Mar. 31, 2026 USD ($) | Mar. 31, 2025 USD ($) | Mar. 31, 2024 USD ($) | Mar. 31, 2023 USD ($) | Mar. 31, 2022 USD ($) | Mar. 31, 2021 USD ($) | Apr. 01, 2025 USD ($) | Jan. 01, 2023 Employee | Jun. 29, 2022 USD ($) Employee
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Severance costs |  |  | $ 664 |  |  |  |  |  |  |  |  |  |
Unusual manufacturing variance |  |  | 2,464 |  |  |  |  |  |  |  |  |  |
Restructuring and other exit charges |  |  | 10,708 | $ 5,862 |  |  |  |  |  |  |  |  |
Employee Severance |  |  |  |  |  |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Exit charges |  |  | 10,105 |  |  |  |  |  |  |  |  |  |
Other restructuring costs |  |  | 603 |  |  |  |  |  |  |  |  |  |
Restructuring and other exit charges |  |  | 10,708 |  |  |  |  |  |  |  |  |  |
Closure Of Facility In Ooltewah, Tennessee |  |  |  |  |  |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Expected additional restructuring charges |  |  |  |  |  |  |  |  |  |  |  |  | $ 18,500
Number of positions eliminated | Employee |  |  |  |  |  |  |  |  |  |  |  |  | 165
Closure Of Facility In Ooltewah, Tennessee | Non Cash Charges |  |  |  |  |  |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Expected additional restructuring charges |  |  |  |  |  |  |  | $ 7,261 |  |  |  |  | $ 9,300
Closure Of Facility In Ooltewah, Tennessee | Inventories, Non Cash Charges |  |  |  |  |  |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Expected additional restructuring charges |  |  |  |  |  |  |  | 1,613 |  |  |  |  |
Closure Of Facility In Ooltewah, Tennessee | Cash charges |  |  |  |  |  |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Expected additional restructuring charges |  |  |  |  |  |  |  | 2,735 |  |  |  |  | $ 9,200
Gain (Loss) on Disposition of Property Plant Equipment, Excluding Oil and Gas Property and Timber Property |  |  |  |  | $ 1,142 |  |  |  |  |  |  |  |
Closure Of Facility In Ooltewah, Tennessee | Site Clean Up, Cash Charges |  |  |  |  |  |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Other restructuring costs |  |  |  |  |  | $ 474 | $ 4,399 |  |  |  |  |  |
Closure of Facility in Hagen, Germany |  |  |  |  |  |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Number of positions eliminated | Employee |  |  |  |  |  |  |  |  |  |  |  | 200 |
Inventory write-down |  |  |  |  |  |  |  |  | $ 960 |  |  |  |
Disposal Group, Not Discontinued Operation, Loss (Gain) on Write-down |  |  |  |  | 1,187 |  |  |  |  |  |  |  |
Closure of Facility in Hagen, Germany | Severance, Non Cash Charges |  |  |  |  |  |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Other restructuring costs |  |  |  |  |  |  |  |  | 3,522 | $ 7,946 |  |  |
Closure of Facility in Hagen, Germany | Employee Severance |  |  |  |  |  |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Other restructuring costs |  |  |  |  |  |  |  |  | $ 8,069 |  |  |  |
Closure of Facility in Hagen, Germany | Severance, Cash Charges |  |  |  |  |  |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Other restructuring costs |  |  |  |  |  |  |  |  |  | $ 23,331 |  |  |
Closure of Facility in Hagen, Germany | Site Clean Up, Cash Charges |  |  |  |  |  |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Other restructuring costs |  |  |  |  | 2,432 | 3,625 | 2,118 | 2,207 |  |  |  |  |
Closure of Facility in Hagen, Germany | Accelerated Depreciation, Non Cash Charges |  |  |  |  |  |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Other restructuring costs |  |  |  |  | 32 | $ 598 | $ 526 | $ 562 |  |  |  |  |
The Plan | Employee Severance |  |  |  |  |  |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Estimated number of positions eliminated (as a percent) |  | 0.11 |  |  |  |  |  |  |  |  |  |  |
Estimated number of positions eliminated | Employee |  | 575 |  |  |  |  |  |  |  |  |  |  |
Flooded Motive Power Batteries |  |  |  |  |  |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Expected additional restructuring charges |  |  |  |  |  |  |  |  |  |  | $ 13,700 |  |
Severance costs |  |  |  |  | 5,182 |  |  |  |  |  |  |  |
Unusual manufacturing variance |  |  |  |  | 2,268 |  |  |  |  |  |  |  |
Flooded Motive Power Batteries | Non Cash Charges |  |  |  |  |  |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Expected additional restructuring charges |  |  |  |  |  |  |  |  |  |  | 1,500 |  |
Flooded Motive Power Batteries | Employee Severance |  |  |  |  |  |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Expected additional restructuring charges |  |  |  |  |  |  |  |  |  |  | $ 12,200 |  |
Lead Acid Batteries |  |  |  |  |  |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Estimated number of positions eliminated | Employee | 474 |  |  |  |  |  |  |  |  |  |  |  |
Expected additional restructuring charges | $ 37,000 |  |  |  |  |  |  |  |  |  |  |  |
Severance costs |  |  |  |  | 10,969 |  |  |  |  |  |  |  |
Retention costs |  |  | 237 |  |  |  |  |  |  |  |  |  |
Restructuring and Related Cost, Accelerated Depreciation |  |  | 3,284 |  |  |  |  |  |  |  |  |  |
Lead Acid Batteries | Fixed Asset Write Off, Non-Cash Charges |  |  |  |  |  |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Expected additional restructuring charges | 14,000 |  |  |  |  |  |  |  |  |  |  |  |
Lead Acid Batteries | Cash charges |  |  |  |  |  |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Expected additional restructuring charges | $ 23,000 |  |  |  |  |  |  |  |  |  |  |  |
Sao Paulo Facility Closure |  |  |  |  |  |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Estimated number of positions eliminated | Employee | 141 |  |  |  |  |  |  |  |  |  |  |  |
Expected additional restructuring charges | $ 7,500 |  |  |  |  |  |  |  |  |  |  |  |
Severance costs |  |  |  |  | 2,984 |  |  |  |  |  |  |  |
Contract termination costs |  |  | 2,369 |  |  |  |  |  |  |  |  |  |
Sao Paulo Facility Closure | Cash charges |  |  |  |  |  |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Expected additional restructuring charges | $ 4,500 |  |  |  |  |  |  |  |  |  |  |  |
Sao Paulo Facility Closure | ROU And Fixed Asset Impairment, Non-Cash Charges |  |  |  |  |  |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Restructuring and other exit charges |  |  |  |  | $ 1,767 |  |  |  |  |  |  |  |
Network & Infrastructure Solutions | Employee Severance |  |  |  |  |  |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Exit charges |  |  | 5,793 |  |  |  |  |  |  |  |  |  |
Other restructuring costs |  |  | 418 |  |  |  |  |  |  |  |  |  |
Restructuring and other exit charges |  |  | 6,211 |  |  |  |  |  |  |  |  |  |
Network & Infrastructure Solutions | The Plan | Employee Severance |  |  |  |  |  |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Severance costs |  |  | 21,651 |  |  |  |  |  |  |  |  |  |
Industrial Mobility Solutions | Employee Severance |  |  |  |  |  |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Exit charges |  |  | 4,312 |  |  |  |  |  |  |  |  |  |
Other restructuring costs |  |  | 186 |  |  |  |  |  |  |  |  |  |
Restructuring and other exit charges |  |  | 4,498 |  |  |  |  |  |  |  |  |  |
Precision Power Solutions | Employee Severance |  |  |  |  |  |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Exit charges |  |  | 0 |  |  |  |  |  |  |  |  |  |
Other restructuring costs |  |  | (1) |  |  |  |  |  |  |  |  |  |
Restructuring and other exit charges |  |  | $ (1) |  |  |  |  |  |  |  |  |  |

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