Restricted Stock Units (Tables) - Restricted Stock Units

3 Months Ended

Mar. 31, 2016

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

Summary of Restricted Stock Units Granted, Vested, Forfeited and Unvested Outstanding

A summary of restricted stock units granted, vested, forfeited and unvested outstanding as of, and changes made during, the three months ended March 31, 2016, is presented below (shares in thousands):

	Restricted Stock Units		Weighted Average Grant Price
Unvested restricted stock units outstanding, December 31, 2015	2,164		$	1.02
Granted	1,206		0.55
Vested	(187	)	1.05
Forfeited	(38	)	0.98
Unvested restricted stock units outstanding, March 31, 2016	3,145		$	0.84

Schedule of Share-based Compensation, Restricted Stock Units, Allocation of Recognized Period Costs

Stock-based compensation expense related to restricted stock units is allocated as follows for the three months ended March 31, 2016 and 2015 (in thousands):

	Three Months Ended
	March 31,
	2016		2015
Cost of revenue	$	8	$	2
Research and development	9		2
Sales and marketing	4		1
General and administrative	77		65
	$	98	$	70