Note 9 - Net Loss Per Share (Tables)

3 Months Ended

Mar. 31, 2020

Notes Tables

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

	Three Months Ended March 31, 20 20		Three Months Ended March 31, 201 9
Numerator:
Net loss	$	(12,414)	$	(8,220)
Denominator:
Weighted average shares of common stock outstanding used in computing net loss per share, basic		14,433		14,017
Dilutive effect of incremental shares and share equivalents		-		-
Weighted average shares of common stock outstanding used in computing net loss per share, diluted		14,433		14,017
Net loss per share:
Net loss per share, basic and diluted	$	(0.86)	$	(0.59)

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

	Three Months Ended
	March 31,
	20 20		201 9
Options to purchase common stock		276		485
Restricted stock units		669		366
Performance stock units		216		21
Employee stock purchase plan shares		71		66
Total		1,232		938