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Stock-Based Compensation Plans Stock Option & SARS activity (Tables)
 12 Months Ended
Dec. 31, 2012
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Schedule of Share-based Compensation, Stock Options and Stock Appreciation Rights Award Activity [Table Text Block]
The following table summarizes stock options and stock appreciation rights activity:
 
2012
 
2011
 
2010
 
 
 
Weighted-
Average
Exercise
Price Per
Share
 
 
 
Weighted-
Average
Exercise
Price Per
Share
 
 
 
Weighted-
Average
Exercise
Price Per
Share
(in thousands, except per share amounts)
Shares
 
 
Shares
 
 
Shares
 
Outstanding at January 1,
14,152

 
$
3.70

 
17,816

 
$
5.55

 
20,172

 
$
7.15

Granted *
994

 
3.41

 
—

 
—

 
1,374

 
2.99

Exercised
(4,854
)
 
2.80

 
(292
)
 
1.74

 
(419
)
 
1.58

Forfeited
(6
)
 
2.91

 
(261
)
 
3.22

 
(464
)
 
2.05

Expired
(748
)
 
4.87

 
(3,111
)
 
14.48

 
(2,847
)
 
16.83

Outstanding at December 31,
9,538

 
$
4.04

 
14,152

 
$
3.70

 
17,816

 
$
5.55

Expected to vest at December 31,
9,538

 
$
4.04

 
14,152

 
$
3.70

 
17,766

 
$
5.56

Exercisable at December 31,
8,486

 
$
4.13

 
13,047

 
$
3.73

 
14,348

 
$
6.26

 
 
 
 
 
 
 
 
 
 
 
 
(dollars in millions)
 
 
 
 
 
 
 
 
 
 
 
Compensation expense for the year
$
1.1

 
 
 
$
0.9

 
 
 
$
1.5

 
 
Tax benefit related to compensation expense
$
(0.4
)
 
 
 
$
(0.3
)
 
 
 
$
(0.6
)
 
 
Intrinsic value of awards exercised
$
10.6

 
 
 
$
0.4

 
 
 
$
0.4

 
 
Cash received from awards exercised
$
5.5

 
 
 
$
0.4

 
 
 
$
0.5

 
 
Grant date fair value of awards vested
$
0.5

 
 
 
$
2.1

 
 
 
$
2.6

 
 
 
 
 
 
 
 
 
 
 
 
 
 
* Assumes the maximum number of awards that can be earned if the performance conditions are achieved.
Schedule of Share-based Compensation, Shares Authorized under Stock Option Plans, by Exercise Price Range [Table Text Block]
The following table summarizes our outstanding and exercisable awards at December 31, 2012:
 
Outstanding
 
Exercisable
 
 
 
Weighted-
Average
Exercise
Price Per
Share
 
 
 
Weighted-
Average
Exercise
Price Per
Share
(in thousands, except per share amounts)
Shares
 
 
Shares
 
$1.39 to $2.91
2,146

 
$
2.05

 
2,116

 
$
2.04

$3.28 to $4.00
3,100

 
3.66

 
2,083

 
3.79

$4.06 to $5.53
1,660

 
4.79

 
1,655

 
4.78

$5.65 to $6.75
2,632

 
5.66

 
2,632

 
5.66

Total
9,538

 
$
4.04

 
8,486

 
$
4.13
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]
The fair values at the date of grant were estimated using the Black-Scholes pricing model with the following assumptions:
 
2012
2011
2010
Expected volatility
43.5
%
—

43.7
%
Risk-free interest rate
0.8
%
—

2.2
%
Expected holding period (in years)
5

—

5

Expected dividends
0.0
%
—

0.0
%
Weighted-average grant date fair value
$
1.32

$
—

$
1.16
Performance Based Awards [Member]
  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Schedule of Nonvested Share Activity [Table Text Block]
The following table summarizes our outstanding performance-based restricted award activity:
 
2012
 
2011
 
2010
 
 
 
Weighted-
Average
Exercise
Price Per
Share
 
 
 
Weighted-
Average
Exercise
Price Per
Share
 
 
 
Weighted-
Average
Exercise
Price Per
Share
(in thousands, except per share amounts)
Shares
 
 
Shares
 
 
Shares
 
Non-vested at January 1,
1,839

 
$
2.90

 
2,641

 
$
3.25

 
4,218

 
$
3.39

Granted*
808

 
3.40

 
998

 
2.85

 
736

 
2.92

Vested
(552
)
 
2.85

 
(479
)
 
2.84

 
(1,146
)
 
3.59

Forfeited
(408
)
 
2.79

 
(1,321
)
 
3.91

 
(1,167
)
 
3.20

Non-vested at December 31,
1,687

 
$
3.13

 
1,839

 
$
2.90

 
2,641

 
$
3.25

 
 
 
 
 
 
 
 
 
 
 
 
(dollars in millions)
 
 
 
 
 
 
 
 
 
 
 
Compensation expense for the year
$
2.7

 
 
 
$
2.4

 
 
 
$
0.5

 
 
Tax benefit related to compensation expense
$
(1.0
)
 
 
 
$
(0.9
)
 
 
 
$
(0.2
)
 
 
Grant date fair value of awards vested
$
1.6

 
 
 
$
1.4

 
 
 
$
4.1

 
 
 
 
 
 
 
 
 
 
 
 
 
 
* Assumes the maximum number of awards that can be earned if the performance conditions are achieved.
Restricted Stock [Member]
  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Schedule of Nonvested Share Activity [Table Text Block]
The following table summarizes our time-based restricted award activity: 
 
2012
 
2011
 
2010
 
 
 
Weighted-
Average
Exercise
Price Per
Share
 
 
 
Weighted-
Average
Exercise
Price Per
Share
 
 
 
Weighted-
Average
Exercise
Price Per
Share
(in thousands, except per share amounts)
Shares
 
 
Shares
 
 
Shares
 
Non-vested at January 1,
872

 
$
2.89

 
229

 
$
3.36

 
213

 
$
3.85

Granted
725

 
3.26

 
711

 
2.85

 
84

 
3.35

Vested
(299
)
 
2.83

 
(45
)
 
4.69

 
(62
)
 
4.91

Forfeited
—

 
—

 
(23
)
 
3.03

 
(6
)
 
4.91

Non-vested at December 31,
1,298

 
$
3.11

 
872

 
$
2.89

 
229

 
$
3.36

 
 
 
 
 
 
 
 
 
 
 
 
(dollars in millions)
 
 
 
 
 
 
 
 
 
 
 
Compensation expense for the year
$
1.5

 
 
 
$
0.8

 
 
 
$
0.5

 
 
Tax benefit related to compensation expense
$
(0.6
)
 
 
 
$
(0.3
)
 
 
 
$
(0.2
)
 
 
Grant date fair value of awards vested
$
0.8

 
 
 
$
0.2

 
 
 
$
0.3