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Earnings Per Common Share (Tables)
 12 Months Ended
Dec. 31, 2015
Earnings Per Share [Abstract]  
Schedule of Earnings Per Share, Basic and Diluted
The table below displays the calculation of basic and diluted earnings per share.
Basic and Diluted Earnings per Common Share
(Amounts in thousands, except per share data)
 
 
Years Ended December 31,
 
 
2015
 
2014
 
2013
Net income
 
$
82,064

 
$
69,306

 
$
79,306

Net income applicable to non-vested restricted shares
 
(882
)
 
(836
)
 
(1,107
)
Net income applicable to common shares
 
$
81,182

 
$
68,470

 
$
78,199

Weighted-average common shares outstanding:
 
 
 
 
 
 
Weighted-average common shares outstanding (basic)
 
77,059

 
74,484

 
73,984

Dilutive effect of common stock equivalents
 
13

 
12

 
10

Weighted-average diluted common shares outstanding
 
77,072

 
74,496

 
73,994

Basic earnings per common share
 
$
1.05

 
$
0.92

 
$
1.06

Diluted earnings per common share
 
1.05

 
0.92

 
1.06

Anti-dilutive shares not included in the computation of
  diluted earnings per common share (1)
 
800

 
1,198

 
1,462



(1) 
This amount represents outstanding stock options for which the exercise price is greater than the average market price of the Company's common stock.