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CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Revenue:
Product revenue	$ 44,799	$ 30,569
Royalty and other revenue	31	21
Total revenue	44,830	30,590
Operating expenses:
Cost of product revenue	19,668	13,990
Research and development	3,288	1,742
Selling, general and administrative	15,898	9,182
Total operating expenses	38,854	24,914
Income from operations	5,976	5,676
Investment income	181	96
Interest expense	(1,652)	(1,585)
Other income (expense)	71	(120)
Income before income taxes	4,576	4,067
Income tax provision	1,128	999
Net income	$ 3,448	$ 3,068
Earnings per share:
Basic	$ 0.08	$ 0.09
Diluted	$ 0.08	$ 0.09
Weighted average shares outstanding:
Basic	43,621,270	33,891,702
Diluted	44,326,732	34,382,322
Other comprehensive income:
Unrealized gain on investments		$ 4
Foreign currency translation gain	$ 251	1,027
Comprehensive income	$ 3,699	$ 4,099

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