Income Taxes - Tax Credit Carryover (Details) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Tax credit carryovers
Gross net operating loss	$ 28,948,111	$ 30,823,968
Federal
Tax credit carryovers
Gross net operating loss		99,989,021
Reduction In Credit carryforwards		1,415,339
California
Tax credit carryovers
Gross net operating loss		44,557,023
Reduction In Credit carryforwards		$ 696,670
Research | Federal
Tax credit carryovers
Tax credit carryovers	0
Research | California
Tax credit carryovers
Tax credit carryovers	$ 382,003