Income Taxes - Additional Information (Details) - USD ($) |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2019 |
Dec. 31, 2018 |
Dec. 31, 2017 |
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| Income Tax Disclosure [Abstract] | |||
| Operating loss and research and development tax credit carryforwards percentage of change in ownership | 50.00% | ||
| Operating loss and research and development tax credit carryforwards percentage of change in ownership period | 3 years | ||
| Percentage of limitation on taxable income after modification and apportionment | 40.00% | 35.00% | 30.00% |
| Net operating loss carryforwards, limitation | State net operating loss carryforwards may be further limited, including in Pennsylvania, which has a limitation of 30%, 35% or 40% of taxable income after modifications and apportionment on state net operating losses utilized in any one year during tax years beginning during 2017, 2018 or 2019 going forward, respectively. | ||
| Accrued interest or penalties related to uncertain tax positions | $ 0 | ||
| Recognized amounts of interest or penalties related to uncertain tax positions | $ 0 | ||
| X | ||||||||||
- Definition Net operating loss carryforwards limitation as percentage of taxable income after modifications and apportionment. No definition available.
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- Definition Net operating losses and tax credit carryforwards limitations on change in ownership minimum percentage. No definition available.
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- Definition Net operating losses and tax credit carryforwards limitations on change in ownership period. No definition available.
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| X | ||||||||||
- References No definition available.
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- Definition A description of the limitations on the use of all operating loss carryforwards available to reduce future taxable income. No definition available.
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- Definition Amount accrued for interest on an underpayment of income taxes and penalties related to a tax position claimed or expected to be claimed in the tax return. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Amount of expense for interest on an underpayment of income taxes and penalties related to a tax position claimed or expected to be claimed in the tax return. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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