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Stock-Based Compensation Company Restricted Stock Units (Tables)
 12 Months Ended
Dec. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Schedule of Nonvested Restricted Stock Units Activity [Table Text Block]
Nonvested restricted stock units activity for the year ending December 31, 2016 were as follows:
(share data in thousands)
Number of Shares
 
Weighted-Average Grant Date Fair Value
Nonvested at beginning of period
999

 
$
19.30

Granted
230

 
18.76

Vested
(407
)
 
19.26

Cancelled/forfeited
(109
)
 
19.29

Nonvested at end of period
712

 
$
19.14