Restricted Stock Units (Tables) - Vested restricted stock units

3 Months Ended

Mar. 31, 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 three months ended March 31, 2017, is presented below (shares in thousands):

	RSUs		Weighted Average Grant Price
Unvested RSUs outstanding, December 31, 2016	3,196		$	0.62
Granted	—		—
Vested	(253	)	0.58
Forfeited	(5	)	0.83
Unvested RSUs outstanding, March 31, 2017	2,938		$	0.62

Summary of Compensation Expense

Stock-based compensation expense related to RSUs is allocated as follows for the three months ended March 31, 2017 and 2016 (in thousands):

	Three Months Ended
	March 31,
	2017		2016
Cost of revenue	$	12	$	8
Research and development	14		9
Sales and marketing	4		4
General and administrative	100		77
	$	130	$	98