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CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Net revenue
Product	$ 3,704	$ 955
Royalty and other	504	257
Total net revenue	4,208	1,212
Cost of net revenue	1,601	602
Gross profit	2,607	610
Operating expenses
Research and development	1,051	3,485
Selling, general and administrative	989	1,314
Total operating expenses	2,040	4,799
Income (loss) from operations	567	(4,189)
Interest expense	(221)	(224)
Other income, net	3	13
Income (loss) before income taxes	349	(4,400)
Income tax provision	1	5
Net and comprehensive income (loss)	$ 348	$ (4,405)
Net income (loss) per share
Basic	$ 0.04	$ (0.66)
Diluted	$ 0.04	$ (0.66)
Shares used in computing net income (loss) per share
Basic	8,130	6,647
Diluted	8,347	6,647

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