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Earnings Per Share and Capital Structure Earnings Per Share and Capital Structure (Tables)
9 Months Ended
Sep. 30, 2015
Earnings Per Share [Abstract]  
Computation of Basic and Diluted Earnings Per Share [Table Text Block]
The following table sets forth the computation of basic and diluted earnings per share (EPS):

 
Three Months Ended September 30,
 
Nine Months Ended September 30,
 
2015
 
2014
 
2015
 
2014
 
(in thousands, except per share data)
Net income available to common shareholders
$
12,695

 
$
7,308

 
$
3,407

 
$
26,313

 
 
 
 
 
 
 
 
Weighted average common shares outstanding - Basic
38,114

 
39,213

 
38,329

 
39,268

Dilutive effect of stock-based awards
244

 
280

 
262

 
248

Weighted average common shares outstanding - Diluted
38,358

 
39,493

 
38,591

 
39,516

Earnings per common share - Basic
$
0.33

 
$
0.19

 
$
0.09

 
$
0.67

Earnings per common share - Diluted
$
0.33

 
$
0.19

 
$
0.09

 
$
0.67