Related Party Transactions - 2019 Bridge Notes (Details)	9 Months Ended
	Sep. 30, 2019 USD ($) individual shares	Jun. 30, 2019 USD ($)	Feb. 28, 2015 USD ($)
Related Party Transaction [Line Items]
Principal amount			$ 150,000
2019 Bridge Notes
Related Party Transaction [Line Items]
Number of members of Board of Directors | individual	3
Principal amount		$ 5,050,000
2019 Bridge Notes | Lisa Conte [Member]
Related Party Transaction [Line Items]
Principal amount	$ 100,000
Number of warrants are converted for each share | shares	37,500
2019 Bridge Notes | James Bochnowski [Member]
Related Party Transaction [Line Items]
Principal amount	$ 350,000
Number of warrants are converted for each share | shares	218,750
2019 Bridge Notes | Jonathan Siegel DBA JBS Healthcare Ventures [Member]
Related Party Transaction [Line Items]
Principal amount	$ 75,000
Number of warrants are converted for each share | shares	34,375
2019 Bridge Notes | Sagard Capital Partners [Member]
Related Party Transaction [Line Items]
Principal amount	$ 500,000
Number of warrants are converted for each share | shares	187,500
2019 Bridge Notes | Jonathan Glaser [Member]
Related Party Transaction [Line Items]
Principal amount	$ 500,000
Number of warrants are converted for each share | shares	250,000