Commitments and Contingencies - Other Agreements (Details) - USD ($)	1 Months Ended		3 Months Ended		9 Months Ended
	May 31, 2019	May 31, 2016	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Other Agreements
Initial term of the agreement		3 years
Total rent expense under operating classified lease			$ 17,000	$ 26,000	$ 69,000	$ 78,000
Office Rental
Other Agreements
Total rent expense under operating classified lease	$ 8,900	$ 8,400