Organization and Summary of Significant Accounting Policies - Research and Development Costs (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Accounting Policies [Abstract]
Outside contracted services	$ 970,846	$ 658,499	$ 1,584,636	$ 1,243,986
Contracted services - related party	0	336,310	0	725,783
Personnel related costs	139,515	122,290	263,153	217,052
Facilities, overhead and other	5,802	37,451	23,827	49,572
Research and development expense, related party, net	$ 1,116,163	$ 1,154,550	$ 1,871,616	$ 2,236,393