CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Revenue
Total revenue	$ 1,705,694	$ 883,846	$ 3,295,427	$ 1,688,202
Operating expenses
Cost of product revenue	1,260,362	608,024	2,125,305	1,072,185
Research and development	1,697,653	1,604,886	3,119,013	2,362,752
Sales and marketing	2,173,071	2,690,262	3,738,195	4,402,452
General and administrative	3,196,861	3,059,748	6,710,275	6,058,148
Impairment of indefinite-lived intangible assets	4,000,000	0	4,000,000	0
Total operating expenses	12,327,947	7,962,920	19,692,788	13,895,537
Loss from operations	(10,622,253)	(7,079,074)	(16,397,361)	(12,207,335)
Interest expense	(3,656,978)	(711,802)	(4,204,108)	(1,313,824)
Other income, net	14,224	15,204	20,608	312,704
Change in fair value of warrants, derivative liability and conversion option liability	207,088	118,489	161,031	(145,365)
Loss on extinguishment of debt	(2,663,198)		(4,605,158)
Net loss	(16,721,117)	(7,657,183)	(25,024,988)	(13,353,820)
Deemed dividend attributable to preferred stock		(995,000)		(995,000)
Net loss attributable to common shareholders	$ (16,721,117)	$ (8,652,183)	$ (25,024,988)	$ (14,348,820)
Net loss per share, basic and diluted (in dollars per share)	$ (15.11)	$ (53.24)	$ (31.22)	$ (100.33)
Weighted-average common shares outstanding, basic and diluted (in shares)	1,106,374	162,506	801,482	143,012
Product revenue, net
Revenue
Total revenue	$ 1,705,694	$ 883,846	$ 3,295,427	$ 1,510,813
Collaboration revenue
Revenue
Total revenue				$ 177,389