Income Taxes - Reconciliation (Details)	12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Operating Loss Carryforwards [Line Items]
U.S. statutory income tax rate	21.00%	21.00%
State tax, net of U.S. federal tax benefit	3.60%	3.70%
Non-U.S. income taxes	0.20%	0.00%
Nondeductible operating expenses	(0.30%)	(1.50%)
Section 162(m) limitation	0.00%	(0.10%)
Non-deductible foreign employee stock compensation	(0.30%)	(0.10%)
Research and development credit	0.10%	0.20%
Change in deferred tax measurement rate	(0.10%)	0.00%
Change in uncertain tax positions	(0.60%)	(0.10%)
Excess tax benefit or detriment from stock plans	(0.80%)	(0.50%)
Change in valuation allowance	(25.50%)	(25.90%)
Impairment of intangibles	0.00%	(6.20%)
Other	0.60%	0.00%
Effective income tax rate	(2.10%)	(9.50%)