Net loss per share attributable to common stockholders (Tables)

12 Months Ended

Dec. 31, 2020

Net loss per share attributable to common stockholders

Schedule of computation of basic and diluted net loss per share attributable to common stockholders

	Year Ended December 31,
	2020		2019		2018
	(in thousands)
Numerator:
Net loss attributable to common stockholders, basic and diluted	$	(17,093)	$	(10,296)	$	(1,220)
Denominator:
Weighted average common stock, basic and diluted		44,440		43,977		42,066
Net loss per share attributable to common stockholders:
Basic and diluted	$	(0.38)	$	(0.23)	$	(0.03)