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Earnings per Share Earnings per Share (Tables)
 6 Months Ended
Jun. 30, 2014
Earnings Per Share [Abstract]  
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]
The table below presents a reconciliation between basic and diluted weighted average shares outstanding, net income available to common shareholders and basic and diluted income per share for the three and six months ended June 30, 2014 and 2013:
 
 
Three Months Ended
 
Six Months Ended
 
 
June 30,
 
June 30,
(In thousands, except per share amounts)
 
2014
 
2013
 
2014
 
2013
NUMERATOR
 
 
 
 
 
 
 
 
Net income
 
$
13,554

 
$
7,264

 
$
26,186

 
$
11,851

Preferred stock dividends
 
(1,219
)
 
(1,219
)
 
(2,438
)
 
(1,219
)
Excess of fair value over book value of preferred shares redeemed
 
—

 
—

 
—

 
(2,190
)
Net income to common shareholders
 
12,335

 
6,045

 
23,748

 
8,442

Interest on 3.25% convertible senior subordinated notes due 2017
 
383

 
—

 
744

 
—

Interest on 3.00% convertible senior subordinated notes due 2018
 
517

 
—

 
1,002

 
—

Diluted income available to common shareholders
 
$
13,235

 
$
6,045

 
$
25,494

 
$
8,442

DENOMINATOR
 
 
 
 
 
 
 
 
Basic weighted average shares outstanding
 
24,470

 
24,271

 
24,444

 
23,278

Effect of dilutive securities:
 
 
 
 
 
 
 
 
Stock option awards
 
218

 
262

 
228

 
278

Deferred compensation awards
 
140

 
113

 
134

 
115

3.25% convertible senior subordinated notes due 2017
 
2,416

 
—

 
2,416

 
—

3.00% convertible senior subordinated notes due 2018
 
2,669

 
—

 
2,669

 
—

Diluted weighted average shares outstanding - adjusted for assumed conversions
 
29,913

 
24,646

 
29,891

 
23,671

Earnings per common share:
 
 
 
 
 
 
 
 
Basic
 
$
0.50

 
$
0.25

 
$
0.97

 
$
0.36

Diluted
 
$
0.44

 
$
0.25

 
$
0.85

 
$
0.36

Anti-dilutive equity awards not included in the calculation of diluted earnings per common share
 
1,287

 
998

 
1,221

 
928