Summary of Significant Accounting Policies (Tables)

3 Months Ended

Mar. 31, 2019

Accounting Policies [Abstract]

Summary of Product Revenue by Geographical Locations of Customers

Product revenue by geographical locations of customers during the three months ended March 31, 2019 and 2018, were as follows (in thousands):

	Three Months Ended
	March 31,
	2019		2018
Product revenue:
Europe, Middle East and Africa	$	12,653	$	11,006
North America		4,551		2,387
Other		300		171
Total product revenue	$	17,504	$	13,564

Anti-Dilutive Effect of Common Shares

The table below presents potential shares that were excluded from the calculation of the weighted average number of shares outstanding used for the calculation of diluted net loss per share. These are excluded from the calculation due to their anti-dilutive effect for the three months ended March 31, 2019 and 2018 (shares in thousands):

	Three Months Ended
	March 31,
	2019		2018
Weighted average number of anti-dilutive potential shares:
Stock options		17,648		17,879
Restricted stock units		2,247		1,579
Employee stock purchase plan rights		7		92
Total		19,902		19,550