Condensed Consolidated Statements of Operations and Comprehensive Income (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Product revenue	$ 23,381	$ 22,278
Licensing, milestone and contract revenue	5	5
Total revenue	23,386	22,283
Operating expenses:
Cost of product revenue	6,083	5,425
Research & development	4,230	2,159
Selling, general & administrative	5,067	3,990
Total operating expenses	15,380	11,574
Income from operations	8,006	10,709
Interest income, net	58	72
Income before income taxes	8,064	10,781
Provision for income taxes	2,571	3,886
Net income	$ 5,493	$ 6,895
Basic net income per share:
Net income (in dollars per share)	$ 0.38	$ 0.46
Basic weighted average common shares outstanding (in shares)	14,576	14,875
Diluted net income per share:
Net income (in dollars per share)	$ 0.37	$ 0.45
Diluted weighted average common shares outstanding (in shares)	15,043	15,307
Net income	$ 5,493	$ 6,895
Other comprehensive income (loss):
Foreign currency translation adjustment	292	776
Comprehensive income	$ 5,785	$ 7,671