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Business Segments - (Goodwill) (Details) $ in Thousands | 6 Months Ended
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Oct. 04, 2020 USD ($)
Segment Reporting Information [Line Items] |
Balance at March 31, 2020 | $ 663,936
Measurement period adjustments | 2,996
Foreign currency translation adjustment | 22,116
Balance as of October 4, 2020 | 689,048
Energy Systems |
Segment Reporting Information [Line Items] |
Balance at March 31, 2020 | 263,150
Measurement period adjustments | 1,348
Foreign currency translation adjustment | 8,334
Balance as of October 4, 2020 | 272,832
Motive Power |
Segment Reporting Information [Line Items] |
Balance at March 31, 2020 | 308,497
Measurement period adjustments | 0
Foreign currency translation adjustment | 11,076
Balance as of October 4, 2020 | 319,573
Specialty |
Segment Reporting Information [Line Items] |
Balance at March 31, 2020 | 92,289
Measurement period adjustments | 1,648
Foreign currency translation adjustment | 2,706
Balance as of October 4, 2020 | $ 96,643

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