Income Taxes - Tax Credit Carryforwards - Deferred Tax Assets (Details) - USD ($) $ in Millions	Mar. 31, 2022	Mar. 31, 2021
Domestic Tax Authority
Deferred Tax Assets
Deferred tax assets related to research and development credits	$ 5.7	$ 9.7
State
Deferred Tax Assets
Deferred tax assets related to research and development credits	$ 6.3	$ 9.7

Amount before allocation of valuation allowances of deferred tax asset attributable to deductible research tax credit carryforwards.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482685/740-10-50-6

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