Rental Expense and Lease Commitments (Details) - USD ($)	12 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2021
Operating Leased Assets [Line Items]
Short-term Lease, Cost	$ 0	$ 0	$ 0
Sublease Income	0	0	0
Variable Lease, Cost	0	0	0
Lessee, Operating Lease, Liability, Payments, Due Next Twelve Months	9,365,000
Lessee, Operating Lease, Liability, Payments, Due Year Two	9,776,000
Lessee, Operating Lease, Liability, Payments, Due Year Three	8,708,000
Lessee, Operating Lease, Liability, Payments, Due Year Four	7,880,000
Lessee, Operating Lease, Liability, Payments, Due Year Five	7,417,000
Lessee, Operating Lease, Liability, Payments, Due after Year Five	27,592,000
Lessee, Operating Lease, Liability, Undiscounted Excess Amount	70,738,000
Receivable with Imputed Interest, Discount	16,248,000
Operating Lease, Payments	8,872,000	9,059,000	8,909,000
Finance Lease, Principal Payments	$ 1,166,000	$ 1,132,000	0
Operating Lease, Weighted Average Remaining Lease Term	7 years 11 months 19 days	5 years 6 months 3 days
Finance Lease, Weighted Average Remaining Lease Term	12 years 6 months 29 days	13 years 6 months 29 days
Operating Lease, Weighted Average Discount Rate, Percent	5.54%	3.78%
Finance Lease, Weighted Average Discount Rate, Percent	4.51%	4.51%
Operating Lease, Liability, Current	$ 7,966,000	$ 7,965,000
Operating Lease, Liability, Noncurrent	46,524,000	23,711,000
Operating Lease, Liability	54,490,000	31,676,000
Finance Lease, Liability	13,541,000
Operating Lease, Cost	9,197,000	9,101,000	9,175,000
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability	31,423,000	5,364,000	2,866,000
Right-of-Use Asset Obtained in Exchange for Finance Lease Liability	0	14,582,000	$ 0
Finance Lease, Liability, to be Paid, Year One	1,200,000
Finance Lease, Liability, to be Paid, Year Two	1,237,000
Finance Lease, Liability, to be Paid, Year Three	1,274,000
Finance Lease, Liability, to be Paid, Year Four	1,312,000
Finance Lease, Liability, to be Paid, Year Five	1,351,000
Finance Lease, Liability, to be Paid, after Year Five	11,657,000
Finance Lease, Liability, Undiscounted Excess Amount	$ 18,031,000
Income and Expenses, Lessee [Abstract]
Lessee, Finance Lease, Term of Contract	23 years
Dorner
Operating Leased Assets [Line Items]
Receivable with Imputed Interest, Discount	$ 4,490,000
Operating Income (Loss)
Income and Expenses, Lessee [Abstract]
Lease, Cost	1,001,000	984,000
Interest Expense [Member]
Income and Expenses, Lessee [Abstract]
Lease, Cost	$ 621,000	$ 634,000