Quarterly report pursuant to Section 13 or 15(d)

Stock-Based Compensation (Tables)

v3.7.0.1
Stock-Based Compensation (Tables)
3 Months Ended
Mar. 31, 2017
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, 2017 is as follows:
 
Options Outstanding
 
Weighted-
Average
Remaining
Contractual
Term (in years)
 
Aggregate
Intrinsic
Value
(in thousands)
 
Number of
Shares
(in thousands)
 
Weighted-
Average
Exercise
Price
 
Outstanding January 1, 2017
2,198

 
$
9.09

 
7.04
 
$

Granted
468

 
2.49

 
 
 
 
Cancelled or expired
(146
)
 
9.49

 
 
 
 
Outstanding March 31, 2017
2,520

 
$
7.84

 
7.10
 
$
1,558

Exercisable March 31, 2017
1,381

 
$
10.17

 
5.56
 
$
161

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 granted to employees during the periods presented:
 
Three Months Ended March 31,
 
2017
Volatility
73.57
%
Risk free interest rate
2.03
%
Dividend yield
0.00
%
Term (years)
6.00

Weighted-average fair value of options granted during the period
1.63

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,
 
2017
 
2016
Volatility
77.41
%
 
75.92
%
Risk free interest rate
2.22
%
 
1.56
%
Dividend yield
0.00
%
 
0.00
%
Term (years)
7.14

 
8.14

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, 2017:
 
Non-vested Restricted Stock Awards
 
Number of
Shares
(in thousands)
 
Weighted-Average Grant Date Fair Value
Non-vested at January 1, 2017
80

 
$
6.30

Vested
(10
)
 
8.38

Cancelled
(2
)
 
$
11.36

Non-vested at March 31, 2017
68

 
$
5.85

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 Consolidated Statements of Operations during the periods presented (in thousands):
 
Three Months Ended March 31,
 
2017
 
2016
Cost of revenues
$
59

 
$
69

Research and development
50

 
50

General and administrative
300

 
387

Sales and marketing
26

 
28

Total stock-based compensation
$
435

 
$
534