Quarterly report pursuant to Section 13 or 15(d)

Stock-Based Compensation (Tables)

v3.2.0.727
Stock-Based Compensation (Tables)
 6 Months Ended
Jun. 30, 2015
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]  
Summary of Stock Option Activity
A summary of the Company’s stock option activity for the six months ended June 30, 2015 was as follows:
 
Options
 
Weighted-Average
Exercise Price
Outstanding at December 31, 2014
1,383,479

 
$
5.13

Granted
1,510,759

 
$
0.95

Exercised
—

 
—

Forfeited
(962,015
)
 
$
2.90

Expired
(359,472
)
 
$
2.86

Outstanding at June 30, 2015
1,572,751

 
$
3.00

Exercisable at June 30, 2015
504,121

 
$
7.19

Vested and expected to vest at June 30, 2015
1,523,604

 
$
3.06

Schedule of Black-Scholes-Merton Option Pricing Model
The following assumptions were used in the Black-Scholes valuation model related to non-employee stock options granted during the six months ended June 30, 2014:
Weighted-average risk-free interest rate
2.69
%
Weighted-average expected life (in years)
9.9

Expected dividend yield
—
%
Weighted-average expected volatility
45
%
Summary of Restricted Stock Unit Activity
Restricted stock awards (“RSA”) activity for the six months ended June 30, 2015 was as follows:
 
Number of Awards
 
Weighted-Average
Grant Date
Fair Value
Unvested at December 31, 2014
—

 
$
—

Granted
30,000

 
$
0.75

Vested
(30,000
)
 
$
0.75

Forfeited
—

 
$
—

Unvested at June 30, 2015
—

 
$
—

Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs
Total stock-based compensation expense included in the condensed consolidated statements of operations and comprehensive loss was allocated as follows (in thousands):
 
Three Months Ended June 30,
 
Six Months Ended June 30,
2015
 
2014
 
2015
 
2014
Cost of revenue
$
5

 
$
213

 
$
34

 
$
215

Research and development
37

 
712

 
159

 
799

General and administrative
31

 
4,625

 
359

 
5,477

Selling and marketing
10

 
1,291

 
152

 
1,711

Capitalized into inventory
7

 
579

 
46

 
622

Total stock-based compensation expense
$
90

 
$
7,420

 
$
750

 
$
8,824

Schedule of Unrecognized Compensation Cost, Nonvested Awards
Unrecognized stock-based compensation at June 30, 2015 was as follows (in thousands):
 
Unrecognized Stock-Based Compensation
 
Weighted Average Remaining Period of Recognition (in years)
Stock options
$
689

 
2.2
Employee Stock Option  
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]  
Schedule of Black-Scholes-Merton Option Pricing Model
The following weighted average assumptions were used in the calculation to estimate the fair value of options granted to employees six months ended June 30, 2015 and 2014:
 
Six Months Ended June 30,
2015
 
2014
Weighted-average risk-free interest rate
1.63
%
 
1.84
%
Weighted-average expected life (in years)
6.3

 
6.3

Expected dividend yield
—
%
 
—
%
Weighted-average expected volatility
47
%
 
48
%