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Income Taxes - Research and Development Tax Credit Carryforwards (Details) - Dec. 31, 2020 - Research and Development Tax Incentive $ in Millions, $ in Millions	USD ($)	AUD ($)
State
Tax credit carryforwards
Tax credit carryforwards available to reduce future income taxes	$ 4.8
Federal
Tax credit carryforwards
Tax credit carryforwards available to reduce future income taxes	12.3
Australian
Tax credit carryforwards
Tax credit carryforwards available to reduce future income taxes	$ 2.8	$ 3.6

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- Definition

The amount of the tax credit carryforward, before tax effects, available to reduce future taxable income under enacted tax laws.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32559-109319

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