Note 10 - Net Loss Per Share (Tables)

6 Months Ended

Jun. 30, 2018

Notes Tables

Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]

	Three Months Ended June 30,				Six Months Ended June 30,
	2018		2017		2018		2017
Net income (loss)	$	(1,572)	$	1,947	$	(3,604)	$	925
Denominator
Weighted average shares of common stock outstanding used in computing net
income (loss) per share, basic		13,709		13,935		13,649		13,888
Dilutive effect of incremental shares and share equivalents		—		694		—		745
Weighted average shares of common stock outstanding used in computing net income (loss) per share, diluted		13,709		14,629		13,649		14,633
Net income (loss) per share:
Net income (loss) per share, basic	$	(0.11)	$	0.14	$	(0.26)	$	0.07
Net income (loss) per share, diluted	$	(0.11)	$	0.13	$	(0.26)	$	0.06

Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block]

	Three Months Ended				Six Months Ended
	June 30,				June 30,
	2018		2017		2018		2017
Options to purchase common stock		710		66		758		53
Restricted stock units		449		3		422		2
Performance stock units		49		—		36		—
Employee stock purchase plan shares		73		—		73		—
Total		1,281		69		1,289		55