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