Income Taxes - Tax Credit Carryforwards - Deferred Tax Assets (Details) - USD ($) $ in Millions	Mar. 31, 2023	Mar. 31, 2022
Domestic Tax Authority
Deferred Tax Assets
Deferred tax assets related to research and development credits	$ 5.0	$ 9.7
State
Deferred Tax Assets
Deferred tax assets related to research and development credits	$ 5.7	$ 9.7