CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Product revenue	$ 25,094	$ 20,816
Operating expenses:
Cost of product revenue	11,069	8,073
Research and development	1,539	1,568
Selling, general and administrative	7,018	6,026
Contingent consideration - fair value adjustments	2,005	1,111
Total operating expenses	21,631	16,778
Income from operations	3,463	4,038
Investment income	61	37
Interest expense	(5)	(9)
Other income (expense)	(979)	132
Income before income taxes	2,540	4,198
Income tax provision	915	1,268
Net income	$ 1,625	$ 2,930
Earnings per share:
Basic	$ 0.05	$ 0.09
Diluted	$ 0.05	$ 0.09
Weighted average shares outstanding:
Basic	33,024,681	32,754,862
Diluted	33,493,575	33,450,611
Other comprehensive income:
Unrealized gain (loss) on investments	$ 15	$ (17)
Foreign currency translation gain (loss)	1,881	(3,849)
Comprehensive income (loss)	$ 3,521	$ (936)