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Share-based Compensation (Tables)
 12 Months Ended
Dec. 31, 2012
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Schedule of Weighted-Average Assumptions
The weighted-average grant date fair value of employee stock options granted (excluding options granted in connection with the stock option exchange program discussed below) during the years ended December 31, 2012, and 2011 was $4.95 and $6.22 per share, respectively, which was estimated using the following weighted-average assumptions:
 
As of December 31,
 
2012
 
2011
Expected volatility
71
%
 
65
%
Expected term (in years)
5.75

 
5.77

Risk-free interest rate
0.90
%
 
1.04
%
Expected dividend yield
—

 
—
Schedule of Stock Option Award Activity
A summary of the Company's stock option award activity as of and for the years ended December 31, 2012 and 2011 is as follows (in thousands, except per share data):

 
 
Number of Shares (1)
 
Weighted-Average Exercise Price Per Share
 
Weighted-Average Remaining Contractual Term (In Years)
 
Aggregate Intrinsic Value
Options outstanding at December 31, 2010
 
4,631

 
$
40.73

 
5.94
 
$
137

Options exercisable at December 31, 2010
 
2,308

 
$
38.98

 
5.07
 
$
—

Options granted
 
1,138

 
$
10.47

 
 
 
 
Options forfeited
 
(2,620
)
 
45.37

 
 
 
 
Options exercised
 
(2
)
 
14.89

 
 
 
 
Options outstanding at December 31, 2011
 
3,146

 
$
25.93

 
6.89
 
$
1,012

Options exercisable at December 31, 2011
 
1,466

 
$
34.71

 
4.79
 
$
—

Options granted
 
1,453

 
$
8.22

 
 
 
 
Options forfeited
 
(1,234
)
 
36.59

 
 
 
 
Options exercised
 
—

 
—

 
 
 
 
Options outstanding at December 31, 2012
 
3,365

 
$
14.38

 
6.82
 
$
433

Options exercisable at December 31, 2012
 
1,222

 
$
23.30

 
4.23
 
$
—


(1) The stock options granted and forfeited activity for the year ended December 31, 2011 included the impact of our stock option exchange program as discussed below. The stock options forfeited activity for the year ended December 31, 2012 included options surrendered pursuant to the Surrender Agreements discussed below.
Schedule of Restricted Stock Awards Activity
A summary of the Company's restricted stock award activity as of and for the years ended December 31, 2012 and 2011 is as follows (in thousands, except per share data):

 
 
Number of Shares
 
Weighted-Average Grant Date Fair Value Per Share
Restricted stock awards outstanding at December 31, 2010
 
2,118

 
$
28.54

Shares issued
 
684

 
11.84

Shares forfeited
 
(353
)
 
29.06

Shares vested
 
(484
)
 
36.51

Restricted stock awards outstanding at December 31, 2011
 
1,965

 
$
20.68

Shares issued
 
955

 
$
7.48

Shares forfeited
 
(608
)
 
$
17.13

Shares vested
 
(499
)
 
$
29.44

Restricted stock awards outstanding at December 31, 2012
 
1,813

 
$
12.68


The following table summarizes information about restricted stock awards that vested during the years ended December 31, 2012, 2011, and 2010 (in thousands):

 
Year Ended December 31,
 
2012
 
2011
 
2010
Fair value on vesting date of vested restricted stock awards
$
3,888

 
$
5,864

 
$
4,965
Schedule of Share-based Compensation Expense
Total share-based compensation expense related to all of the Company's share-based awards for the years ended December 31, 2012, 2011, and 2010 was allocated in the consolidated statements of comprehensive income as follows (in thousands, except per share data):

 
Year Ended December 31,
 
2012
 
2011
 
2010
Cost of service
$
254

 
$
1,734

 
$
3,673

Selling and marketing expense
22

 
1,985

 
5,781

General and administrative expense
7,846

 
11,609

 
27,155

Share-based compensation expense
$
8,122

 
$
15,328

 
$
36,609

Share-based compensation expense per share:
 
 
 
 
 
Basic
$
0.11

 
$
0.20

 
$
0.48

Diluted
$
0.11

 
$
0.20

 
$
0.48