Leases (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Mar. 31, 2021
Operating Lease, Liability	$ 32,305		$ 32,305		$ 34,994
Operating Lease, Right-of-Use Asset	31,433		31,433		34,181
Operating Lease, Liability, Current	7,798		7,798		7,673
Operating Lease, Liability, Noncurrent	24,507		24,507		$ 27,321
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability	1,471	$ 1,986
Operating Lease, Cost	2,321	2,251	$ 4,635	$ 4,485
Operating Lease, Payments	4,569	$ 4,344
Finance Lease, Principal Payments	562
Right-of-Use Asset Obtained in Exchange for Finance Lease Liability	$ 14,582
Debt Instrument, Interest Rate, Stated Percentage	4.51%		4.51%
Finance Lease, Liability, Undiscounted Excess Amount	$ 14,336		$ 14,336
Short-term Debt
Finance Lease, Liability, Undiscounted Excess Amount	515		515
Operating Income (Loss)
Lease, Cost	250		484
Interest Expense [Member]
Lease, Cost	163		316
Dorner
Operating Lease, Right-of-Use Asset	$ 587		$ 587
Minimum [Member]
Lessee, Operating Lease, Term of Contract	1 year		1 year
Maximum [Member]
Lessee, Operating Lease, Term of Contract	15 years		15 years