Condensed Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Total revenue, net	$ 142,038	$ 156,499	$ 438,696	$ 446,809
Less: Cost of goods sold	30,211	33,071	90,692	96,676
Gross margin	111,827	123,428	348,004	350,133
Operating expenses:
Selling, general and administrative	102,965	120,164	315,966	346,496
Research and development	7,820	10,204	23,554	30,450
Restructuring	14,115		14,115
Total operating expenses	124,900	130,368	353,635	376,946
Operating loss	(13,073)	(6,940)	(5,631)	(26,813)
Interest income, net	163	549	919	1,908
Other (expense) income, net	(57)	33	(390)	50
Loss from operations before taxes	(12,967)	(6,358)	(5,102)	(24,855)
Income tax (provision) benefit	(184)	(430)	(1,867)	1,929
Net loss	$ (13,151)	$ (6,788)	$ (6,969)	$ (22,926)
Loss per share:
Basic	$ (0.03)	$ (0.02)	$ (0.02)	$ (0.06)
Diluted	$ (0.03)	$ (0.02)	$ (0.02)	$ (0.06)
Weighted average shares:
Basic	396,618	389,699	395,681	378,770
Diluted	396,618	389,699	395,681	378,770
Product Revenue, Net
Total revenue, net	$ 141,442	$ 155,190	$ 436,598	$ 441,118
Licensing and Royalty Revenue
Total revenue, net	$ 596	$ 1,309	$ 2,098	$ 5,691

The aggregate costs related to goods produced and sold and services rendered by an entity during the reporting period. This excludes costs incurred during the reporting period related to financial services rendered and other revenue generating activities.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 924
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SAB Topic 11.L)
-URI http://asc.fasb.org/extlink&oid=6472922&loc=d3e499488-122856

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.2(a),(d))
-URI http://asc.fasb.org/extlink&oid=123367319&loc=SL114868664-224227