Annual report pursuant to Section 13 and 15(d)

Stock Plans and Stock-Based Compensation (Tables)

v2.4.1.9
Stock Plans and Stock-Based Compensation (Tables)
12 Months Ended
Dec. 31, 2014
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]  
Assumptions used to calculate fair value for stock based awards
The following assumptions were used:
 
 
 
2014
 
 
2013
 
 
2012
 
Exercise price
 
n/a
 
 
$1.71–$9.21
 
 
$4.75–$7.84
 
Expected stock price volatility
 
n/a
 
 
81.3%–112.7%
 
 
87.3%–114.3%
 
Risk free rate of interest
 
n/a
 
 
1.01%–3.04%
 
 
0.16%–2.23%
 
Expected life of options
 
n/a
 
 
6 years–10 years
 
 
2 years–10 years
 
Components of Stock-Based Compensation Expenses
The following table summarizes the stock-based compensation expense from stock option, employee stock purchase programs and restricted Common Stock awards and warrants for the years ended December 31, 2014, 2013 and 2012
 
 
 
2014
 
2013
 
2012
 
($ in thousands)
 
 
 
 
 
 
 
 
 
 
Employee awards
 
$
5,492
 
$
4,867
 
$
2,408
 
Non-employee awards
 
 
54
 
 
897
 
 
664
 
Non-employee warrants
 
 
—
 
 
138
 
 
566
 
Total compensation expense
 
$
5,546
 
$
5,902
 
$
3,638
 
Summary of Stock Option Activity
The following table summarizes stock option activity:
 
 
 
Outstanding Options
 
Weighted
 
 
 
Number of
Shares
 
Weighted
Average
Exercise
Price
 
Total
Weighted
Average
Intrinsic
Value
 
Average
Remaining
Contractual
Life
(in years)
 
($ in thousands except per share amounts)
 
 
 
 
 
 
 
 
 
 
 
 
 
Outstanding at December 31, 2013
 
 
3,117,777
 
$
4.31
 
$
—
 
 
8.36
 
Options granted
 
 
—
 
$
—
 
 
—
 
 
 
 
Options exercised
 
 
(323,412)
 
$
1.84
 
 
193
 
 
 
 
Options cancelled/forfeited
 
 
(630,000)
 
$
4.28
 
 
—
 
 
 
 
Outstanding at December 31, 2014
 
 
2,164,365
 
$
4.69
 
$
—
 
 
7.38
 
Options vested and expected to vest
 
 
2,164,365
 
$
4.69
 
$
—
 
 
7.38
 
Options vested and exercisable
 
 
1,731,032
 
$
4.33
 
$
—
 
 
7.18
 
Nonvested Restricted Stock Shares Activity
The following table summarizes restricted stock activity:
 
 
 
Restricted Stock
 
 
 
 
 
 
Weighted
 
 
 
 
 
 
Average Grant
 
 
 
Number of
 
Date
 
 
 
Shares
 
Fair Value
 
Unvested balance at December 31, 2013
 
 
3,958,692
 
$
1.93
 
Restricted stock granted
 
 
4,343,692
 
 
2.69
 
Restricted stock vested
 
 
-
 
 
-
 
Restricted stock forfeited
 
 
(15,000)
 
 
2.69
 
Unvested balance at December 31, 2014
 
 
8,287,384
 
$
2.33