CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Revenue:
Revenue	$ 29,629	$ 27,319	$ 59,744	$ 51,874
Cost of revenue	8,787	8,433	17,871	16,420
Gross profit	20,842	18,886	41,873	35,454
Operating expenses:
Research and development	3,672	3,241	7,421	6,613
Sales, general and administrative	27,033	24,687	55,036	45,784
Litigation-related	1,304	1,200	3,947	3,823
Amortization of acquired intangible assets	172	172	344	354
Transaction-related	(181)		4,091
Restructuring				60
Total operating expenses	32,000	29,300	70,839	56,634
Operating loss	(11,158)	(10,414)	(28,966)	(21,180)
Other expense:
Interest and other expense, net	(3,032)	(1,921)	(5,906)	(4,040)
Loss on debt extinguishment	(1,555)		(1,555)
Total other expense, net	(4,587)	(1,921)	(7,461)	(4,040)
Loss from continuing operations before taxes	(15,745)	(12,335)	(36,427)	(25,220)
Income tax provision	60	71	100	102
Loss from continuing operations	(15,805)	(12,406)	(36,527)	(25,322)
Loss from discontinued operations, net of applicable taxes		(30)		(82)
Net loss	$ (15,805)	$ (12,436)	$ (36,527)	$ (25,404)
Net loss per share, basic and diluted:
Continuing operations	$ (0.25)	$ (0.26)	$ (0.58)	$ (0.55)
Discontinued operations	0.00	0.00	0.00	0.00
Net loss per share, basic and diluted	$ (0.25)	$ (0.27)	$ (0.58)	$ (0.55)
Shares used in calculating basic and diluted net loss per share	63,713	46,880	63,140	45,957
United States Product
Revenue:
Revenue	$ 28,834	$ 26,093	$ 57,904	$ 49,048
International Supply Agreement
Revenue:
Revenue	$ 795	$ 1,226	$ 1,840	$ 2,826