Organization and Summary of Significant Accounting Policies - Prepaid Expenses and Other Current Assets (Details) - USD ($)	Jun. 30, 2020	Dec. 31, 2019
Accounting Policies [Abstract]
Prepaid insurance	$ 416,199	$ 173,890
Prepaid expenses - various	166,334	101,221
Prepaid research and development	16,261	0
Prepaid taxes	720	2,888
Prepaid expenses and other current assets	$ 599,514	$ 277,999

Amount of asset related to consideration paid in advance for income and other taxes that provide economic benefits within a future period of one year or the normal operating cycle, if longer.

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Name:	us-gaap_PrepaidTaxes
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant