Commitments - Exclusive License and Collaboration Agreement (Details) - USD ($)		3 Months Ended			9 Months Ended	37 Months Ended
	Nov. 19, 2015	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Sep. 30, 2019	Dec. 31, 2018
Other Commitments [Line Items]
Stock issued during the period		$ 14,603,000	$ 1,527,000	$ 642,000
Letter of Intent
Other Commitments [Line Items]
Stock newly-issued during the period (in shares)	14,327					66,520
Stock issued during the period	$ 120,300					$ 900,000
Stock issuance expenses					$ 177,394
Additional stock issued during the period, upon milestones (in shares)	92,634
Number of shares expected to issue as final milestone has been reached					11,787