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Acquisitions & Disposals - Narrative (Details) - USD ($) $ in Thousands |  | 3 Months Ended | 7 Months Ended | 12 Months Ended
--- | --- | --- | --- | ---
May 31, 2023 | Mar. 31, 2024 | Dec. 31, 2023 | Mar. 31, 2024 | Mar. 31, 2023 | Mar. 31, 2022
Business Acquisition [Line Items] |  |  |  |  |  |
Payments to acquire businesses, net of cash acquired |  |  |  | $ 108,145 | $ 1,616 | $ 539,778
Debt instrument, increase (decrease), other, net | $ 75,000 |  |  |  |  |
Total debt |  | $ 517,299 |  | 517,299 | 458,052 |
Goodwill |  | 710,334 |  | 710,334 | $ 644,629 | $ 648,849
Amended and Restated Revolving Credit |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Proceeds from (repayments of) debt | 117,000 |  | $ 120,000 |  |  |
Secured Debt |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Total debt | 45,000 |  |  |  |  |
montratec |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Payments to acquire businesses, net of cash acquired | 115,721 |  |  |  |  |
Cash acquired from acquisition | 7,576 |  |  |  |  |
Working capital settlement | 540 |  |  |  |  |
Contingent liability | 6,680 | 6,680 |  | 6,680 |  |
Decrease in amount of contingent consideration, liability |  | 11,675 |  |  |  |
Acquisition costs, period cost |  |  |  | 3,211 |  |
Goodwill | $ 66,566 | 66,566 |  | 66,566 |  |
Goodwill, purchase accounting adjustments |  | $ 12,377 |  |  |  |
Business combination, provisional information, initial accounting incomplete, adjustment, right of use assets |  |  |  | 1,535 |  |
Business combination, provisional information, initial accounting incomplete, adjustment, lease liabilities |  |  |  | 1,535 |  |
Business combination, provisional information, initial accounting incomplete, adjustment, deferred taxes |  |  |  | $ 702 |  |
Estimated useful life | 14 years |  |  |  |  |
Business acquisition, goodwill, expected tax deductible amount | $ 7,531 |  |  |  |  |
montratec | Customer relationships |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Indefinite-lived intangible assets acquired | 33,470 |  |  |  |  |
montratec | Trademark |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Finite-lived intangible assets acquired | 2,915 |  |  |  |  |
montratec | Patents |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Finite-lived intangible assets acquired | $ 16,196 |  |  |  |  |

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