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
Revenues:
Revenues	$ 29,201	$ 23,002	$ 81,075	$ 66,351
Cost of revenues	9,268	6,796	25,688	19,686
Gross profit	19,933	16,206	55,387	46,665
Operating expenses:
Research and development	3,962	3,157	10,791	6,952
Sales, general and administrative	26,792	18,833	72,360	53,628
Litigation	604	1,329	4,427	4,143
Amortization of intangible assets	172	187	526	551
Transaction-related expenses		66		1,546
Gain on settlement				(6,168)
Restructuring		167	60	758
Total operating expenses	31,530	23,739	88,164	61,410
Operating loss	(11,597)	(7,533)	(32,777)	(14,745)
Total other expenses, net	(2,926)	(1,754)	(6,966)	(5,183)
Loss from continuing operations before taxes	(14,523)	(9,287)	(39,743)	(19,928)
Income tax provision (benefit)	20	26	122	(1,697)
Loss from continuing operations	(14,543)	(9,313)	(39,865)	(18,231)
Loss from discontinued operations, net of applicable taxes	(24)	(42)	(106)	(116)
Net loss	$ (14,567)	$ (9,355)	$ (39,971)	$ (18,347)
Net loss per share, basic and diluted:
Continuing operations	$ (0.26)	$ (0.22)	$ (0.81)	$ (0.56)
Discontinued operations	0.00	0.00	0.00	0.00
Net loss per share, basic and diluted	$ (0.26)	$ (0.22)	$ (0.81)	$ (0.56)
Shares used in calculating basic and diluted net loss per share	55,736	42,497	49,252	32,658
United States Product
Revenues:
Revenues	$ 28,051	$ 20,996	$ 77,099	$ 60,606
International Supply Agreement
Revenues:
Revenues	$ 1,150	$ 2,006	$ 3,976	$ 5,745