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Earnings Per Common Share (Tables)
 12 Months Ended
Dec. 31, 2013
Earnings Per Share [Abstract]  
Computation of Basic and Diluted Net Earnings Per Share
The computations of basic net earnings per share and diluted net earnings per share for 2013, 2012 and 2011 are as follows:

 
 
Year ended December 31, 2013
 
Income
(Numerator)
 
Shares
(Denominator)
 
Per-share
Amount
 
 
Net income
$
47,129,000

 
 
 
 
 
Basic earnings per common share
$
47,129,000

 
69,206,000

 
$
0.68

 
Effect of dilutive securities:
 
 
 
 
 
 
Stock options and restricted stock
 
 
839,000

 
(0.01
)
 
Diluted earnings per common share
$
47,129,000

 
70,045,000

 
$
0.67

 
 
 
 
 
Year ended December 31, 2012
 
Income
(Numerator)
 
Shares
(Denominator)
 
Per-share
Amount
 
 
Net income
$
44,214,000

 
 
 
 
 
Basic earnings per common share
$
44,214,000

 
67,511,000

 
$
0.65

 
Effect of dilutive securities:
 
 
 
 
 
 
Stock options and restricted stock
 
 
974,000

 
—

 
Diluted earnings per common share
$
44,214,000

 
68,485,000

 
$
0.65

 
 
 
 
 
Year ended December 31, 2011
 
Income
(Numerator)
 
Shares
(Denominator)
 
Per-share
Amount
 
 
Net income
$
38,156,000

 
 
 
 
 
Basic earnings per common share
$
38,156,000

 
66,637,000

 
$
0.57

 
Effect of dilutive securities:
 
 
 
 
 
 
Stock options and restricted stock
 
 
948,000

 
(0.01
)
 
Diluted earnings per common share
$
38,156,000

 
67,585,000

 
$
0.56