Debt - Narrative (Details)		3 Months Ended	12 Months Ended
	Mar. 18, 2024	Mar. 31, 2025 USD ($)	Mar. 31, 2025 USD ($)	Mar. 31, 2024 USD ($)	Mar. 31, 2022 USD ($)	May 31, 2023 USD ($)
Short-Term Debt [Line Items]
Less: current portion		$ 50,000,000	$ 50,000,000	$ 50,000,000
Long-term debt		458,708,000	458,708,000	517,299,000
AR Securitization		165,481,000	165,481,000	171,186,000
Present value of lease liabilities		12,267,000	12,267,000	12,937,000
Current portion of long-term debt and finance lease obligation		$ 739,000	$ 739,000	670,000
Hartland, WI
Short-Term Debt [Line Items]
Finance lease term		23 years	23 years
Maximum
Short-Term Debt [Line Items]
Finance lease term		23 years	23 years
Minimum
Short-Term Debt [Line Items]
Finance lease term		1 year	1 year
Unsecured Debt
Short-Term Debt [Line Items]
Line of credit facility, maximum borrowing capacity		$ 2,920,000	$ 2,920,000
Outstanding borrowings		0	0
Term Loan B
Short-Term Debt [Line Items]
Line of credit facility, maximum borrowing capacity		100,000,000	100,000,000
Accordion feature, increase limit				75,000,000	$ 75,000,000
Increase In deferred financing costs				1,522,000	$ 892,000
Debt instrument, basis spread on variable rate	0.25%
Long-term debt, gross		437,560,000	437,560,000	477,560,000
Repayments of long-term debt			40,000,000	60,000,000
Less: current portion		4,976,000	4,976,000
Deferred finance costs		7,845,000	7,845,000	7,845,000
Accumulated amortization balances		$ 4,201,000	$ 4,201,000	2,971,000
Quarterly principal amortization percentage		0.0025	0.0025
Excess cash flow percentage		0.50	0.50
Leverage ratio prior to June 30, 2021			6.75
Leverage ratio prior to June 30, 2022			5.50
Leverage ratio prior to June 30, 2023			4.50
Leverage ratio on June 30, 2023 and thereafter			3.50
Term Loan B | Maximum
Short-Term Debt [Line Items]
Excess cash flow step down, percentage		25.00%	25.00%
Term Loan B | Minimum
Short-Term Debt [Line Items]
Excess cash flow step down, percentage		0.00%	0.00%
Term Loan B | Secured Overnight Financing Rate (SOFR)
Short-Term Debt [Line Items]
Debt instrument, basis spread on variable rate	2.50%
Term Loan B | Base Rate
Short-Term Debt [Line Items]
Debt instrument, basis spread on variable rate	1.50%
Term Loan B | Long-term Debt
Short-Term Debt [Line Items]
Secured long-term debt, noncurrent		$ 450,000,000	$ 450,000,000
Amended and Restated Revolving Credit
Short-Term Debt [Line Items]
Line of credit facility, maximum borrowing capacity				175,000,000
Increase In deferred financing costs				801,000
Line of credit facility, increase (decrease), net				75,000,000
Outstanding letters of credit		15,417,000	15,417,000
Deferred finance costs		4,828,000	4,828,000	4,828,000
Amended and Restated Revolving Credit | Standby Letters of Credit
Short-Term Debt [Line Items]
Outstanding letters of credit		15,417,000	15,417,000
Line of Credit
Short-Term Debt [Line Items]
Accumulated amortization balances		3,733,000	3,733,000	2,655,000
AR Securitization
Short-Term Debt [Line Items]
Line of credit facility, maximum borrowing capacity		55,000,000	55,000,000
Long-term debt, gross		25,000,000	25,000,000	45,000,000
Repayments of long-term debt		20,000,000
Deferred finance costs		536,000	536,000	536,000
Accumulated amortization balances		327,000	327,000	149,000
Long-term debt		25,000,000	25,000,000	$ 45,000,000		$ 45,000,000
AR Securitization | United States
Short-Term Debt [Line Items]
AR Securitization		78,939,000	$ 78,939,000
AR Securitization | Secured Overnight Financing Rate (SOFR)
Short-Term Debt [Line Items]
Debt instrument, basis spread on variable rate			1.10%
Debt instrument, credit spread adjustment on variable rate			0.0010
Bank Guarantees | Unsecured Debt
Short-Term Debt [Line Items]
Line of credit facility, maximum borrowing capacity		22,118,000	$ 22,118,000
Outstanding borrowings		$ 16,537,000	$ 16,537,000