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Compensation Arrangements Compensation Arrangements Performance Share Units (Tables)
 12 Months Ended
Dec. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Schedule of Nonvested Performance-based Units Activity [Table Text Block]
The table below summarizes activity regarding unvested performance share units for the year ended December 31, 2014:    
 
 
Performance Share Units
 
Weighted- Average Grant Date Fair Value (per share)
Unvested at December 31, 2013
 
—

 
$
—

    Granted
 
1,983,232

 
$
8.07

    Vested
 
—

 
$
—

    Forfeited
 
(967,388
)
 
$
8.07

Unvested at December 31, 2014
 
1,015,844

 
$
8.07