Quarterly report pursuant to Section 13 or 15(d)

Stock-Based Compensation (Tables)

v3.4.0.3
Stock-Based Compensation (Tables)
 3 Months Ended
Mar. 31, 2016
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Summary of Employee and Nonemployee Stock Option Activity
A summary of employee and non-employee stock option activity for the three months ended March 31, 2016 is as follows:
 
Options Outstanding
 
Weighted-
Average
Remaining
Contractual
Term (in years)
 
Aggregate
Intrinsic
Value
(in thousands)
 
Number of
Shares
 
Weighted-
Average
Exercise
Price
 
Outstanding January 1, 2016
1,961

 
$
10.55

 
7.68
 
$
—

Canceled or expired
(33
)
 
9.91

 
 
 
 
Outstanding March 31, 2016
1,928

 
$
10.56

 
7.38
 
$
—

Exercisable March 31, 2016
1,081

 
$
10.34

 
6.52
 
$
—

Weighted-Average Assumptions Used to Estimate Fair Value of Options Granted
The following table presents the weighted-average assumptions used to estimate the fair value of options reaching their measurement date for non-employees during the periods presented:
 
Three Months Ended March 31,
 
2016
 
2015
Volatility
75.92
%
 
70.50%
Risk free interest rate
1.56
%
 
1.88%
Dividend yield
0.00
%
 
0.00%
Term (years)
8.14

 
9.09
The following table presents the weighted-average assumptions used to estimate the fair value of options granted to employees during the periods presented:
 
Three Months Ended
 
March 31, 2015
Volatility
68.98%
Risk free interest rate
1.70%
Dividend yield
0.00%
Term (years)
6.31
Weighted-average fair value of options granted during the period
5.83
Nonvested Restricted Stock Shares Activity
The following table summarizes the activities for our non-vested restricted stock awards for the three months ended March 31, 2016:
 
Non-vested Restricted Stock Awards
 
Number of
Shares
(in thousands)
 
Weighted-Average Grant Date Fair Value
Non-vested at January 1, 2016
121

 
$
8.25

Vested
(23
)
 
10.18

Non-vested at March 31, 2016
98

 
$
7.80

Effects of Stock-Based Compensation Related to Awards
The following table presents the effects of stock-based compensation related to stock option and restricted stock awards to employees and non-employees on our Statement of Operations during the periods presented (in thousands):
 
Three Months Ended March 31,
 
2016
 
2015
Cost of revenues
$
69

 
$
49

Research and development
50

 
95

General and administrative
387

 
521

Sales and marketing
28

 
31

Total stock-based compensation
$
534

 
$
696