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Net Income Per Common Share Level 3 Net Income Per Common Share (Tables)
 6 Months Ended
Jun. 30, 2013
Earnings Per Share [Abstract]  
Net Income Per Common Share [Table Text Block]
The following table sets forth the computation of basic and diluted net income per common share:

 
Three Months Ended
June 30
 
Six Months Ended
June 30
 
2013
 
2012
 
2013
 
2012
 
(thousands, except per-share data)
Net income
$
10,412

 
$
15,047

 
$
91,248

 
$
16,715

Weighted average common shares outstanding during the period (for basic calculation)
43,229

 
29,700

 
40,415

 
29,700

Dilutive effect of other potential common shares
4

 
—

 
2

 
—

Weighted average common shares and potential common shares (for diluted calculation)
43,233

 
29,700

 
40,417

 
29,700

 
 
 
 
 
 
 
 
Net income per common share - Basic
$
0.24

 
$
0.51

 
$
2.26

 
$
0.56

Net income per common share - Diluted
$
0.24

 
$
0.51

 
$
2.26

 
$
0.56