Restricted Stock Units (Tables) - Restricted Stock Units (RSUs)

9 Months Ended

Sep. 30, 2017

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Summary of Restricted Stock Units Activity

A summary of restricted stock units (“RSUs”) granted, vested, forfeited and unvested outstanding as of, and changes made during, the nine months ended September 30, 2017, is presented below (shares in thousands):

	RSUs		Weighted Average Grant Price
Unvested RSUs outstanding, December 31, 2016	3,196		$	0.62
Granted	—		—
Vested	(724	)	0.42
Forfeited	(85	)	0.61
Unvested RSUs outstanding, September 30, 2017	2,387		$	0.68

Summary of Compensation Expense

Stock-based compensation expense related to RSUs is allocated as follows for the three and nine months ended September 30, 2017 and 2016 (in thousands):

	Three Months Ended				Nine Months Ended
	September 30,				September 30,
	2017		2016		2017		2016
Cost of revenue	$	10	$	9	$	29	$	26
Research and development	14		10		43		29
Sales and marketing	2		3		6		4
General and administrative	55		82		236		243
	$	81	$	104	$	314	$	302