CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Revenue:
Revenue	$ 69,445	$ 49,529	$ 200,771	$ 142,090
Costs and operating expenses:
Cost of product revenue	31,425	22,183	88,978	62,939
Research and development	5,427	3,601	14,278	12,669
Selling, general and administrative	24,629	15,859	67,326	48,347
Total costs and operating expenses	61,481	41,643	170,582	123,955
Income from operations	7,964	7,886	30,189	18,135
Other income (expenses):
Investment income	1,898	558	3,616	1,251
Loss on extinguishment of debt	(5,650)		(5,650)
Interest expense	(2,857)	(1,687)	(6,326)	(5,008)
Other income (expenses)	316	(134)	(23)	187
Other expenses, net	(6,293)	(1,263)	(8,383)	(3,570)
Income before income taxes	1,671	6,623	21,806	14,565
Income tax provision	12	1,829	3,999	3,586
Net income	$ 1,659	$ 4,794	$ 17,807	$ 10,979
Earnings per share:
Basic	$ 0.03	$ 0.11	$ 0.38	$ 0.25
Diluted	$ 0.03	$ 0.10	$ 0.37	$ 0.24
Weighted average common shares outstanding:
Basic	50,852	43,822	47,087	43,729
Diluted	51,809	45,828	47,930	45,132
Net income	$ 1,659	$ 4,794	$ 17,807	$ 10,979
Other comprehensive income (loss):
Foreign currency translation adjustment	(6,741)	(630)	(9,901)	(5,410)
Comprehensive (loss) income	(5,082)	4,164	7,906	5,569
Products
Revenue:
Revenue	69,419	49,500	200,701	142,042
Royalty and Other Revenue
Revenue:
Revenue	$ 26	$ 29	$ 70	$ 48