CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Revenue:
Product revenue	$ 19,814	$ 15,152	$ 62,088	$ 45,038
Royalty and other revenue		126		2,117
Total revenue	19,814	15,278	62,088	47,155
Operating expenses:
Cost of product revenue	8,444	6,931	25,103	19,938
Cost of royalty revenue	0	0	0	0
Research and development	1,490	1,650	4,309	4,281
Selling, general and administrative	5,959	4,471	18,226	12,180
Contingent consideration - fair value adjustments	233	10	2,114	126
Total operating expenses	16,126	13,062	49,752	36,525
Income from operations	3,688	2,216	12,336	10,630
Investment income	37	64	92	250
Interest expense	(8)	(12)	(24)	(38)
Other income (expense)	(38)	(14)	(175)	54
Income before income taxes	3,679	2,254	12,229	10,896
Income tax provision	1,141	788	3,149	2,327
Net income	$ 2,538	$ 1,466	$ 9,080	$ 8,569
Earnings per share:
Basic	$ 0.08	$ 0.04	$ 0.28	$ 0.27
Diluted	$ 0.08	$ 0.04	$ 0.27	$ 0.26
Weighted average shares outstanding:
Basic	32,925,004	32,677,003	32,860,382	32,292,588
Diluted	33,689,560	33,327,377	33,617,999	33,099,599
Other comprehensive income:
Unrealized gain on investments	$ 65	$ 34	$ 43	$ 46
Foreign currency translation loss	(596)	(3,157)	(2,998)	(4,763)
Comprehensive income (loss)	$ 2,007	$ (1,657)	$ 6,125	$ 3,852