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Net Income Per Share (Tables)
 9 Months Ended
Sep. 30, 2013
Earnings Per Share [Abstract]  
Schedule of Net Income Per Share
 
Three Months Ended 
 September 30,
 
Nine Months Ended 
 September 30,
 
2013
 
2012
 
2013
 
2012
 
(millions)
Numerators:
 
 
 
 
 
 
 
Net income (loss) from continuing operations
$
(44.3
)
 
$
5.0

 
$
(108.9
)
 
$
(116.4
)
Net income (loss) from discontinued operations
—

 
(0.5
)
 
21.7

 
0.1

Net income (loss)
$
(44.3
)
 
$
4.5

 
$
(87.2
)
 
$
(116.3
)
Numerators for diluted calculations (a):
 

 
 

 
 
 
 
Net income (loss) from continuing operations
$
(44.3
)
 
$
5.0

 
$
(108.9
)
 
$
(116.4
)
Net income (loss) from discontinued operations
—

 
(0.5
)
 
21.7

 
0.1

Net income (loss)
$
(44.3
)
 
$
4.5

 
$
(87.2
)
 
$
(116.3
)
 
 
 
 
 
 
 
 
Denominator:
 

 
 

 
 
 
 
Weighted average common shares
5.0

 
5.0

 
5.0

 
5.0

Less: Weighted average unvested restricted stock
0.1

 
0.1

 
0.1

 
0.1

Denominator for basic calculation
4.9

 
4.9

 
4.9

 
4.9

 
 
 
 
 
 
 
 
Weighted average effect of dilutive securities:
 

 
 

 
 
 
 
Convertible notes
1.8

 
1.8

 
1.8

 
1.8

Convertible preferred stock:
 

 
 

 
 
 
 
Equivalent common shares (b)
13.7

 
4.3

 
10.5

 
3.5

Less: share issuance limitation (c)
12.8

 
3.4

 
9.6

 
2.6

Net allowable common shares
0.9

 
0.9

 
0.9

 
0.9

Subtotal
2.7

 
2.7

 
2.7

 
2.7

Less: shares excluded in a period of a net loss or antidilution 
2.7

 
2.7

 
2.7

 
2.7

Weighted average effect of dilutive securities
—

 
—

 
—

 
—

Denominator for diluted calculation
4.9

 
4.9

 
4.9

 
4.9

 
 
 
 
 
 
 
 
Net income (loss) per share from continuing operations – basic and diluted
$
(9.04
)
 
$
1.02

 
$
(22.22
)
 
$
(23.75
)
Net income (loss) per share from discontinued operations – basic and diluted
$
—

 
$
(0.10
)
 
$
4.43

 
$
0.02

Net income (loss) per share – basic and diluted
$
(9.04
)
 
$
0.92

 
$
(17.79
)
 
$
(23.73
)
Schedule of Securities Excluded from Net Income Per Share
Options and warrants to purchase shares of common stock having an exercise price greater than the average share market price are excluded from the calculation of diluted net income per share:
 
Three Months Ended 
 September 30,
 
 
Nine Months Ended 
 September 30,
 
 
2013
 
 
2012
 
 
2013
 
 
2012
 
Options excluded from diluted net income per share
1,000

 
 
111,000

 
 
1,000

 
 
111,000

 
Warrants excluded from diluted net income per share
250,000

 
 
250,000

 
 
250,000

 
 
250,000

 
Exercise price of excluded options
$
177.50

to
 
$
93.00

to
 
$
177.50

to
 
$
93.00

to
 
$
357.00

 
 
$
357.00

 
 
$
357.00

 
 
$
357.00

 
Exercise price of excluded warrants
$
187.50

 
 
$
187.50

 
 
$
187.50

 
 
$
187.50