CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Product sales, net	$ 30,499	$ 22,484	$ 78,460	$ 59,522
Gross profit	21,175	14,346	51,474	35,991
Research and development	3,096	3,113	27,174	10,581
Selling, general and administrative	14,982	12,569	44,761	35,314
Total operating expenses	18,078	15,682	71,935	45,895
Income (loss) from operations	3,097	(1,336)	(20,461)	(9,904)
Other income (expense):
Increase (decrease) in fair value of warrants	0	420	0	(2,524)
Interest income	385	307	1,293	390
Interest expense	(2)	(460)	(6)	(1,340)
Other income (expense)	(10)	0	8	(1)
Total other income (expense)	373	267	1,295	(3,475)
Net income (loss)	$ 3,470	$ (1,069)	$ (19,166)	$ (13,379)
Earnings Per Share, Basic (in dollars per share)	$ 0.08	$ (0.02)	$ (0.44)	$ (0.34)
Weighted Average Number of Shares Outstanding, Basic (in shares)	44,251	42,925	43,979	39,163
Earnings Per Share, Diluted (in dollars per share)	$ 0.07	$ (0.02)	$ (0.44)	$ (0.34)
Weighted Average Number of Shares Outstanding, Diluted (in shares)	46,667	42,925	43,979	39,163
Product
Product sales, net	$ 30,499	$ 22,484	$ 78,460	$ 59,522
Cost of product sales	$ 9,324	$ 8,138	$ 26,986	$ 23,531