Note 8 - Net Loss Per Share

6 Months Ended

Jun. 30, 2016

Notes to Financial Statements

Earnings Per Share [Text Block]

Note 8. Net Loss Per Share

Basic net loss per share is calculated by dividing net loss by the weighted-average number of common shares outstanding during the year. Diluted net loss per common share is the same as basic net loss per common share, as the effect of the potential common stock equivalents is anti-dilutive and as such is excluded from the calculations of the diluted net loss per share.

The following numbers of shares outstanding, prior to the application of the treasury stock method, were excluded from the computation of diluted net loss per common share for the periods presented because including them would have had an anti-dilutive effect (in thousands):

	Three Months Ended				Six Months Ended
	June 30,				June 30,
	201 6		201 5		201 6		201 5
Options to purchase common stock		1,993		2,618		2,059		2,903
Restricted stock units		448		295		426		305
Performance stock units		151		96		144		96
Employee stock purchase plan shares		83		58		83		58
Total		2,675		3,067		2,712		3,362