Condensed Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
Mar. 31, 2018	Mar. 31, 2017
Revenues:
Product revenue	$ 6,163	$ 5,586
Research and development revenue	7,879	2,385
Total revenues	14,042	7,971
Costs and operating expenses:
Cost of product revenue	3,825	3,002
Research and development	7,178	5,839
Selling, general and administrative	7,746	6,606
Total costs and operating expenses	18,749	15,447
Loss from operations	(4,707)	(7,476)
Interest income	71	18
Other income (expenses)	(60)	22
Loss before income taxes	(4,696)	(7,436)
Provision for (benefit from) income taxes	(2)	24
Net loss	$ (4,694)	$ (7,460)
Net loss per share, basic and diluted (usd per shares)	$ (0.10)	$ (0.18)
Weighted average common shares used in computing net loss per share, basic and diluted (shares)	48,385	41,250

Total costs related to goods produced and sold during the reporting period.

Name:	us-gaap_CostOfGoodsSold
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The amount of net income or loss for the period per each share in instances when basic and diluted earnings per share are the same amount and reported as a single line item on the face of the financial statements. Basic earnings per share is the amount of net income or loss for the period per each share of common stock or unit outstanding during the reporting period. Diluted earnings per share includes the amount of net income or loss for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.

+ References

No definition available.