Stock-Based Compensation (Tables)

3 Months Ended

Mar. 31, 2017

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

Stock-based compensation cost

Total estimated stock-based compensation expense for employees and non-employees, related to all of the Company's stock-based awards, was comprised as follows:

	Three Months Ended
	March 31,
	2017			2016
	(in thousands)
Cost of revenue	$	(85	)	$	121
Selling and marketing	36			21
Research and development	57			144
General and administrative	378			841
Total stock-based compensation	$	386		$	1,127

Stock activity and total number of shares available for grant

The following table presents the stock activity and the total number of shares available for grant as of March 31, 2017:

	(in thousands)
Balance at December 31, 2016	2,261
Options granted	(197	)
Restricted Stock granted	—
Forfeited/Expired shares added back	542
Balance at March 31, 2017	2,606

Stock option activity

	Options Outstanding
	Number of Shares Underlying Outstanding Options		Weighted-Average Exercise Price	Weighted-Average Remaining Contractual Term	Aggregate Intrinsic Value
				(In years)
Outstanding at December 31, 2016	6,381,447		1.90	7.37	20,033
Granted	196,600		1.14
Exercised	—		—
Forfeited	(497,352	)	1.94
Outstanding at March 31, 2017	6,080,695		1.87	7.01	—
Vested and expected to vest at March 31, 2017	6,070,694		1.88	7.01	—
Exercisable at March 31, 2017	3,435,334		1.89	6.98	—

Schedule of weighted-average assumptions

The following are assumptions for the three months endedMarch 31, 2017.

Expected term (in years)	6.1
Risk-free interest rate	2.0% - 2.1%
Expected volatility	41.0% - 41.1%
Dividend rate	0%

Restricted stock awards

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

Stock option activity

	Shares		Weighted Average Grant Date Fair Value Per Share
Nonvested restricted stock at December 31, 2016	135,705		1.84
Granted	—		—
Vested	—		—
Forfeited	(43,902	)	1.16
Nonvested restricted stock at March 31, 2017	91,803		2.17