Leases - Supplemental Cash Flow (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Leases [Abstract]
Operating lease right-of-use assets	$ 0	$ 19,078
Operating lease liabilities, non-current	11,457	16,380
Operating lease liabilities, current portion	4,734	4,427
Total operating lease liabilities	16,191	20,807
Property, plant and equipment, at cost	569	569
Accumulated depreciation	(285)	(171)
Property, plant and equipment, net	284	398
Financing lease liabilities, non-current	167	282
Financing lease liabilities, current portion	125	122
Total finance lease liabilities	292	404
Operating cash flow from operating leases	5,800	6,226
Finance cash flows from finance leases	120	119
ROU assets obtained in exchange for operating lease obligations	0	100
Reductions to ROU assets resulting from reductions to operating lease obligations	955	1,175
Reductions to ROU assets resulting from asset impairments	$ 8,850	$ 0
Weighted average remaining lease term, operating lease	4 years 3 months 18 days	5 years
Finance Lease, Weighted Average Remaining Lease Term	2 years 6 months	3 years 6 months
Weighted average discount rate, operating lease	5.07%	5.05%
Finance Lease, Weighted Average Discount Rate, Percent	2.08%	2.08%