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Stock Compensation Plans (Tables)
 9 Months Ended
Sep. 30, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block]
A summary of performance based unvested stock unit activity at target is as follows:

(stock units in thousands)
Target Number of Units
Weighted Average Fair Value
Unvested performance stock unit awards, at December 31, 2014
—

—

2015 Performance Awards granted
217

$
18.10

2015 Performance Awards forfeited
(3
)
18.23

Unvested performance stock unit awards, at September 30, 2015(a)
214

$
18.10

(a) For the 2015 Performance Awards, participants in the aggregate can earn up to a maximum of 428 thousand performance stock units.