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Stock-Based Compensation Plans Stock Option & SARS activity (Tables)
 12 Months Ended
Dec. 31, 2013
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:
 
2013
 
2012
 
2011
 
 
 
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,
9,538

 
$
4.04

 
14,152

 
$
3.70

 
17,816

 
$
5.55

Granted *
595

 
4.75

 
994

 
3.41

 
—

 
—

Exercised
(804
)
 
2.41

 
(4,854
)
 
2.80

 
(292
)
 
1.74

Forfeited
(361
)
 
3.39

 
(6
)
 
2.91

 
(261
)
 
3.22

Expired
(2,840
)
 
5.56

 
(748
)
 
4.87

 
(3,111
)
 
14.48

Outstanding at December 31,
6,128

 
$
3.66

 
9,538

 
$
4.04

 
14,152

 
$
3.70

Expected to vest at December 31,
6,128

 
$
3.66

 
9,538

 
$
4.04

 
14,152

 
$
3.70

Exercisable at December 31,
5,064

 
$
3.61

 
8,486

 
$
4.13

 
13,047

 
$
3.73

 
 
 
 
 
 
 
 
 
 
 
 
(dollars in millions)
 
 
 
 
 
 
 
 
 
 
 
Compensation expense for the year
$
0.6

 
 
 
$
1.1

 
 
 
$
0.9

 
 
Tax benefit related to compensation expense
$
(0.2
)
 
 
 
$
(0.4
)
 
 
 
$
(0.3
)
 
 
Intrinsic value of awards exercised
$
1.2

 
 
 
$
10.6

 
 
 
$
0.4

 
 
Cash received from awards exercised
$
2.4

 
 
 
$
5.5

 
 
 
$
0.4

 
 
Grant date fair value of awards vested
$
0.4

 
 
 
$
0.5

 
 
 
$
2.1

 
 
 
 
 
 
 
 
 
 
 
 
 
 
* 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, 2013:
 
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
1,321

 
$
2.06

 
1,321

 
$
2.06

$3.28 to $4.00
2,915

 
3.66

 
2,234

 
3.74

$4.06 to $5.53
1,890

 
4.78

 
1,507

 
4.79

$5.65 to $6.75
2

 
5.66

 
2

 
5.66

Total
6,128

 
$
3.66

 
5,064

 
$
3.61
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:
 
2013
2012
2011
Expected volatility
43.6
%
43.5
%
—

Risk-free interest rate
0.8
%
0.8
%
—

Expected holding period (in years)
5

5

—

Expected dividends
0.0
%
0.0
%
—

Weighted-average grant date fair value
$
1.84

$
1.32

$
—
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:
 
2013
 
2012
 
2011
 
 
 
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,
1,687

 
$
3.13

 
1,839

 
$
2.90

 
2,641

 
$
3.25

Granted*
1,067

 
4.56

 
808

 
3.40

 
998

 
2.85

Vested
(703
)
 
3.07

 
(552
)
 
2.85

 
(479
)
 
2.84

Forfeited
(514
)
 
3.67

 
(408
)
 
2.79

 
(1,321
)
 
3.91

Non-vested at December 31,
1,537

 
$
3.97

 
1,687

 
$
3.13

 
1,839

 
$
2.90

 
 
 
 
 
 
 
 
 
 
 
 
(dollars in millions)
 
 
 
 
 
 
 
 
 
 
 
Compensation expense for the year
$
2.6

 
 
 
$
2.7

 
 
 
$
2.4

 
 
Tax benefit related to compensation expense
$
(1.0
)
 
 
 
$
(1.0
)
 
 
 
$
(0.9
)
 
 
Grant date fair value of awards vested
$
2.2

 
 
 
$
1.6

 
 
 
$
1.4

 
 
 
 
 
 
 
 
 
 
 
 
 
 
* 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: 
 
2013
 
2012
 
2011
 
 
 
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,
1,298

 
$
3.11

 
872

 
$
2.89

 
229

 
$
3.36

Granted
279

 
4.72

 
725

 
3.26

 
711

 
2.85

Vested
(454
)
 
3.03

 
(299
)
 
2.83

 
(45
)
 
4.69

Forfeited
(79
)
 
3.40

 
—

 
—

 
(23
)
 
3.03

Non-vested at December 31,
1,044

 
$
3.55

 
1,298

 
$
3.11

 
872

 
$
2.89

 
 
 
 
 
 
 
 
 
 
 
 
(dollars in millions)
 
 
 
 
 
 
 
 
 
 
 
Compensation expense for the year
$
1.7

 
 
 
$
1.5

 
 
 
$
0.8

 
 
Tax benefit related to compensation expense
$
(0.6
)
 
 
 
$
(0.6
)
 
 
 
$
(0.3
)
 
 
Grant date fair value of awards vested
$
1.4

 
 
 
$
0.8

 
 
 
$
0.2