CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Product sales, net	$ 26,151	$ 19,011	$ 47,961	$ 37,038
Gross profit	17,129	11,284	30,299	21,645
Research and development	21,070	3,739	24,078	7,468
Selling, general and administrative	16,259	11,791	29,779	22,745
Total operating expenses	37,329	15,530	53,857	30,213
Loss from operations	(20,200)	(4,246)	(23,558)	(8,568)
Other income (expense):
Increase in fair value of warrants	0	(37)	0	(2,944)
Interest income	428	83	908	83
Interest expense	(2)	(448)	(4)	(880)
Other income (expense)	(18)	(3)	18	(1)
Total other income (expense)	408	(405)	922	(3,742)
Net loss	$ (19,792)	$ (4,651)	$ (22,636)	$ (12,310)
Net loss per share attributable to common shareholders (Basic and Diluted) (in dollars per share)	$ (0.45)	$ (0.12)	$ (0.52)	$ (0.33)
Weighted average number of common shares outstanding (Basic and Diluted) (in shares)	43,956	38,349	43,841	37,251
Product
Product sales, net	$ 26,151	$ 19,011	$ 47,961	$ 37,038
Cost of product sales	$ 9,022	$ 7,727	$ 17,662	$ 15,393