Debt (Details) - USD ($)	3 Months Ended
	Jun. 30, 2025	Mar. 31, 2025	Mar. 31, 2024	Mar. 31, 2022	May 14, 2021
Short-Term Debt [Line Items]
Current portion of long-term debt and finance lease obligations	$ 50,000,000
Accounts receivable balance	180,127,000	$ 165,481,000
Outstanding balance on finance lease obligation	12,092,000	12,267,000
Current portion of long-term debt and finance lease obligation	757,000	739,000
Unsecured Lines of Credit
Short-Term Debt [Line Items]
Line of credit facility, maximum borrowing capacity	3,182,000
Outstanding borrowings	$ 0
Hartland, WI
Short-Term Debt [Line Items]
Finance lease term	23 years
Term Loan B
Short-Term Debt [Line Items]
Accordion feature, increase limit			$ 75,000,000	$ 75,000,000
Outstanding borrowings	$ 432,560,000	437,560,000
Repayments of long-term debt	5,000,000
Periodic payment required	1,244,000
Current portion of long-term debt and finance lease obligations	4,976,000
Deferred financing costs gross	7,845,000	7,845,000
Accumulated amortization of deferred financing costs	4,509,000	4,201,000
Term Loan B | Long-Term Debt
Short-Term Debt [Line Items]
Secured long-term debt, noncurrent					$ 450,000,000
Revolving Credit Facility
Short-Term Debt [Line Items]
Line of credit facility, maximum borrowing capacity					$ 100,000,000
Amended and Restated Revolving Credit Facility
Short-Term Debt [Line Items]
Line of credit facility, maximum borrowing capacity			$ 175,000,000
Outstanding borrowings	0
Outstanding letters of credit	15,440,000
Deferred financing costs gross	4,828,000	4,828,000
Accumulated amortization of deferred financing costs	4,003,000	3,733,000
AR Securitization Facility
Short-Term Debt [Line Items]
Line of credit facility, maximum borrowing capacity	55,000,000
Deferred financing costs gross	536,000	536,000
Accumulated amortization of deferred financing costs	372,000	327,000
Long-term debt	32,400,000	$ 25,000,000
Long-term debt, to be paid, next 12 months	50,000,000
AR Securitization Facility | UNITED STATES
Short-Term Debt [Line Items]
Accounts receivable balance	88,264,000
Bank Guarantees | Unsecured Lines of Credit
Short-Term Debt [Line Items]
Line of credit facility, maximum borrowing capacity	21,570,000
Outstanding borrowings	$ 14,817,000