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Related Party Transactions (Details) - USD ($)				1 Months Ended			2 Months Ended	12 Months Ended
Related Party Transactions (Details) - USD ($)	Dec. 30, 2019	Sep. 28, 2018	Jan. 18, 2018	Apr. 30, 2018	Feb. 28, 2018	Jan. 31, 2018	Jun. 30, 2019	Dec. 31, 2019	Dec. 31, 2018	Oct. 31, 2019	Oct. 23, 2019
Related Party Transaction [Line Items]
Related Party Costs	$ 227,000,000
SeriesA and Series B Redeemable Convertible Preferred Stock
Related Party Transaction [Line Items]
Number of shares issued for each converted preferred stock	1
SeriesA Redeemable Convertible Preferred Stock
Related Party Transaction [Line Items]
Shares issued (in shares)				$ 4,801,020
Shares price (in dollars per share)				$ 3.50
Gross proceeds				$ 16,800,000
Series B Redeemable Convertible Preferred Stock
Related Party Transaction [Line Items]
Shares issued (in shares)							$ 3,463,593
Shares price (in dollars per share)							$ 7.00
Gross proceeds							$ 24,240,000
Convertible notes
Related Party Transaction [Line Items]
Principal amount											$ 9,800,000
Manufacturing Agreement
Related Party Transaction [Line Items]
Related Party Costs								$ 314
Investor \| Convertible notes
Related Party Transaction [Line Items]
Principal amount					$ 500
Dong-A ST \| License Agreement
Related Party Transaction [Line Items]
Total consideration						$ 2,300,000
Dong-A ST \| Acquisition Agreement
Related Party Transaction [Line Items]
Total consideration			$ 6,500,000
Dong-A ST \| Manufacturing Agreement
Related Party Transaction [Line Items]
Term of agreement		5 years
Related Party Costs									$ 383
Period for dismission of allegations.								30 days
JK BioPharma Solutions, Inc. \| Linguistic transaction
Related Party Transaction [Line Items]
Total consideration					32
JK BioPharma Solutions, Inc. \| Assignment of convertible notes
Related Party Transaction [Line Items]
Principal amount										$ 200
JK BioPharma Solutions, Inc. \| Convertible notes
Related Party Transaction [Line Items]
Principal amount					400,000
The E&Healthcare Investment Fund II \| Convertible notes
Related Party Transaction [Line Items]
Principal amount										116,000
The E&Healthcare Investment Fund No. 6 \| Convertible notes
Related Party Transaction [Line Items]
Principal amount										32,000
The E&Healthcare Investment Fund No. 7 \| Convertible notes
Related Party Transaction [Line Items]
Principal amount										$ 52,000
Roy Freeman, M.D. \| Convertible notes
Related Party Transaction [Line Items]
Principal amount					$ 100,000
NeuroBo \| Investor \| Minimum
Related Party Transaction [Line Items]
Ownership interest					5.00%
NeuroBo \| Dong-A ST
Related Party Transaction [Line Items]
Ownership interest						5.00%