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STOCK-BASED COMPENSATION (Tables)
12 Months Ended
Dec. 31, 2013
Class of Stock [Line Items]  
Estimated On Date of Grant Binomial Option-Pricing Model
The fair value of stock option awards is estimated on the date of grant using a binomial option-pricing model that uses the assumptions noted in the following table:
 
Valuation Assumptions
 
2013
 
2012
 
2011
 
Risk-free interest rate
 
2.02%
 
1.99%
 
3.49%
 
Expected volatility
 
75.3%
 
78.8%
 
78.8%
 
Expected dividend yield
 
0.00%
 
0.00%
 
0.00%
 
Expected term
 
5 yrs.
 
5 yrs.
 
5 yrs.
 
Stock Option
 
Class of Stock [Line Items]  
Summary of All Stock Option Activity
A summary of all stock option activity during 2013 is as follows:
 
 
 
Number of 
Options
 
Weighted 
Average 
Exercise 
Price
 
Weighted 
Average 
Remaining 
Contractual 
Life
 
Aggregate 
Intrinsic 
Value ($ in 
millions)
 
Options Outstanding at December 31, 2012
 
1,882,554
 
$
11.92
 
6.2
 
$
0.8
 
Granted
 
361,220
 
$
9.61
 
 
 
 
 
 
Exercised
 
(85,917)
 
$
6.99
 
 
 
$
0.3
 
Forfeited
 
(82,975)
 
$
9.58
 
 
 
 
 
 
Expired
 
(75,194)
 
$
11.37
 
 
 
 
 
 
Options Outstanding at December 31, 2013
 
1,999,688
 
$
11.57
 
6.0
 
$
4.4
 
 
 
 
 
 
 
 
 
 
 
 
 
Options Exercisable at December 31, 2013
 
1,235,826
 
$
12.88
 
4.5
 
$
2.1
 
Restricted Stock
 
Class of Stock [Line Items]  
Summary of All Stock Option Activity
A summary of all restricted stock activity during 2013 is as follows:
 
 
 
Number of 
Shares
 
 
Weighted 
Average 
Grant Date 
Fair Value
 
Restricted Stock Outstanding at December 31, 2012
 
773,950
 
$
9.89
 
Granted
 
521,181
 
$
9.63
 
Vested
 
(62,183)
 
$
6.19
 
Forfeited
 
(86,017)
 
$
8.78
 
Restricted Stock Outstanding at December 31, 2013
 
1,146,931
 
$
10.06