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Income Taxes - Additional Information (Details) - USD ($)
 12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Income Tax Disclosure [Line Items]    
Net change in valuation allowance $ 12,400,000  
Net operating loss carryforwards $ 18,883,686 $ 7,578,570
Period for cumulative change in ownership 3 years  
Cumulative change in ownership percentage 50.00%  
Operating loss carryforwards, limitations on use NOL carryforwards may be, or become subject to, an annual limitation in the event of certain cumulative changes in the ownership interest of significant stockholders over a three year period in excess of 50%, as defined under Sections 382 and 383 of the Internal Revenue Code of 1986, as amended, as well as similar state tax provisions. This could limit the amount of NOLs that the Company can utilize annually to offset future taxable income or tax liabilities. The amount of the annual limitation, if any, will be determined based on the value of the Company immediately prior to an ownership change. Subsequent ownership changes may further affect the limitation in future years. If and when the Company utilizes the NOL carryforwards in a future period, it will perform an analysis to determine the effect, if any, of these loss limitation rules on the NOL carryforward balances.  
Accruals relating to uncertain tax position $ 0  
Germany    
Income Tax Disclosure [Line Items]    
Accumulated non-capital losses 3,500,000 3,700,000
United States    
Income Tax Disclosure [Line Items]    
Net operating loss carryforwards $ 65,700,000 $ 24,600,000