Income Taxes (Details) - USD ($) $ in Millions |
12 Months Ended | |
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Dec. 31, 2020 |
Dec. 31, 2019 |
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Income Taxes (Details) [Line Items] | ||
Deferred tax assets, valuation allowance | $ 56.2 | $ 49.9 |
Federal income tax purposes, net operating losses | $ 152.0 | |
Description of limitation of net loss | limited to 80% of their value if used in a tax year ending after January 1, 2021. | |
State income tax purposes, net operating losses | $ 81.7 | |
Research Tax Credit Carryforward [Member] | Domestic Tax Authority [Member] | ||
Income Taxes (Details) [Line Items] | ||
Net operating losses | $ 2.2 | |
Net operating loss expiration date | expire in 2034 | |
Orphan Drug Credits [Member] | ||
Income Taxes (Details) [Line Items] | ||
Net operating losses | $ 10.4 | |
Net operating loss expiration date | expire in 2028 |
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- Definition Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized. No definition available.
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- References No definition available.
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- Definition Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to increase (decrease) in foreign income tax contingency. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to increase (decrease) in state and local income tax contingency. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount of operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Description of the limitation related to use of the tax credit carryforward. No definition available.
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