Debt - Notes Payable (Details) - USD ($)	1 Months Ended
	Oct. 31, 2019	May 31, 2019	Dec. 31, 2019	Jun. 30, 2019	Dec. 31, 2018	Mar. 21, 2018
Notes payable
Net carrying value					$ 11,294,770
Less: unamortized debt discount and net issuance costs					(55,600)
Notes payable, net of discount			$ 6,778,461		4,845,575
Notes payable - current, net			450,000
Interest payable			356,778		917,482
Notes payable	$ 550,000
Notes payable
Notes payable
Net carrying value			7,228,461		5,180,857
Less: unamortized debt discount and net issuance costs					(335,282)
Note payable, net			7,228,461		4,845,575
Notes payable, net of discount			450,000
Notes payable - current, net			6,778,461		4,845,575
December 2017 note payable | Notes payable
Notes payable
Net carrying value					1,673,237
February 2018 note payable | Notes payable
Notes payable
Net carrying value					2,359,750
March 2018 note payable | Notes payable
Notes payable
Net carrying value					$ 1,147,870
March 2018 note payable | Securities purchase agreement
Notes payable
Less: unamortized debt discount and net issuance costs						$ (315,341)
2019 Exchange Note 1
Notes payable
Accrued interest on notes payable		$ 410,561
Notes payable		$ 10,125,339
Interest rate (as a percent)		10.00%
2019 Exchange Note 1 | Notes payable
Notes payable
Net carrying value			4,381,535
2019 Exchange Note 2
Notes payable
Notes payable		$ 2,296,926
Interest rate (as a percent)		10.00%
2019 Exchange Note 2 | Notes payable
Notes payable
Net carrying value			2,296,926
2019 Bridge Notes
Notes payable
Notes payable				$ 5,050,000
Interest rate (as a percent)				12.00%
Tempesta Note Payable
Notes payable
Net carrying value			550,000
Notes payable	$ 550,000
Interest rate (as a percent)	2.50%
Semi-annual principal and interest payments	$ 50,000
Tempesta Note Payable | Notes payable
Notes payable
Net carrying value			$ 550,000