Commitments and Contingencies (Details) - USD ($)
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1 Months Ended |
12 Months Ended |
Jun. 30, 2019 |
Mar. 31, 2019 |
Oct. 31, 2018 |
Jun. 30, 2018 |
Apr. 30, 2017 |
Dec. 31, 2021 |
Dec. 31, 2020 |
| Commitments And Contingencies Details [Line Items] |
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| Security Deposit |
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$ 200,000
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| Rent Expense |
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$ 1,000,000.0
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$ 1,000,000.0
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| 2017 License Agreement [Member] |
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| Commitments And Contingencies Details [Line Items] |
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| One-time, non-refundable upfront payment |
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$ 100,000
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| 2017 License Agreement [Member] | Maximum [Member] |
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| Commitments And Contingencies Details [Line Items] |
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| Additional consideration upon achievement of certain development and commercial milestones |
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$ 29,000,000.0
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| Royalty payments percentage of net product sales if commercialization achieved |
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2.50%
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| 2017 License Agreement [Member] | Minimum [Member] |
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| Commitments And Contingencies Details [Line Items] |
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| Royalty payments percentage of net product sales if commercialization achieved |
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1.25%
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| 2018 License Agreement [Member] |
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| Commitments And Contingencies Details [Line Items] |
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| Payment of one-time, non-refundable, non-creditable initial license fee |
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$ 100,000
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| Annual non-refundable, non-creditable development fee payment |
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100,000
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| Additional consideration of contingent upon future commercialization |
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$ 300,000
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| 2019 License Agreement [Member] |
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| Commitments And Contingencies Details [Line Items] |
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| Payment of one-time, non-refundable, non-creditable initial license fee |
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$ 100,000
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| Annual non-refundable, non-creditable development fee payment |
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100,000
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| Additional consideration of contingent upon future commercialization |
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$ 400,000
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| 2018 Master License Agreement [Member] |
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| Commitments And Contingencies Details [Line Items] |
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| Royalty payments percentage of net product sales if commercialization achieved |
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1.25%
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| Payment for upfront license fee |
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$ 200,000
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| Payment for annual license fee |
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100,000
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| Additional consideration upon achievement of certain development milestones |
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700,000
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| Additional consideration upon achievement of certain commercial milestones |
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2,200,000
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| Additional consideration upon achievement of certain sales milestones |
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$ 7,000,000.0
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| 2019 Sale Agreement [Member] |
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| Commitments And Contingencies Details [Line Items] |
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| Contingent annual fee upon commercialization percentage of net sales |
1.00%
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| Contingent annual fee upon commercialization description |
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(1% of net sales, or $0.1 million, whichever is greater)
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| Contingent annual fee upon commercialization amount of net sales |
$ 100,000
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| 2019 Sale Agreement [Member] | Maximum [Member] |
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| Commitments And Contingencies Details [Line Items] |
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| One-time milestone payments |
$ 1.3
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| 2019 Sale Agreement [Member] | Minimum [Member] |
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| Commitments And Contingencies Details [Line Items] |
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| Condition upon certain milestone payments waived of percentage |
50.00%
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