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Stock-Based Compensation (Tables)
 6 Months Ended
Jun. 30, 2016
Share-based Compensation [Abstract]  
Schedule of Compensation Cost for Share-based Payment Arrangements, Allocation of Share-based Compensation Costs by Plan [Table Text Block]
A summary of stock-based compensation costs follows (in millions):
 
Three Months Ended 
 June 30,
 
Six Months Ended 
 June 30,
 
2016
 
2015
 
2016
 
2015
 
 
 
 
 
 
 
 
Total stock-based compensation costs:
 
 
 
 
 
 
 
Restricted stock and restricted stock units
$
—

 
$
—

 
$
0.1

 
$
0.1

Stock options, performance awards and other
0.1

 
0.1

 
0.2

 
0.1

Expense included primarily in selling, general and administrative expense
$
0.1

 
$
0.1

 
$
0.3

 
$
0.2

 
 
 
 
 
 
 
 
Total recognized tax benefit
$
—

 
$
—

 
$
—

 
$
—
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]
 
Six Months Ended
June 30,
 
2016
 
2015
Risk-free interest rate
1.9%
 
1.9%
Expected volatility
75%
 
75%
Expected option life (years)
6
 
6
Weighted-average grant date fair value
$1.77
 
$2.89
Options granted
15,000
 
300,000