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Earnings Per Share (Tables)
 9 Months Ended
Sep. 30, 2014
Earnings Per Share [Abstract]  
Computation of basic and diluted earnings per share
The following table sets forth the computation of basic and diluted earnings per share (unaudited, in thousands, except per share data):
 
 
Three Months Ended
 
Nine Months Ended
 
 
September 30,
 
September 30,
 
 
2014
 
2013
 
2014
 
2013
Numerator:
 
 
 
 
 
 
 
 
Income from continuing operations for calculating basic and diluted earnings per share
 
$
19,528

 
$
23,127

 
$
58,497

 
$
58,961

Income (loss) from discontinued operations
 
—

 
14

 
(272
)
 
107

Net income for calculating basic and diluted earnings per share
 
$
19,528

 
$
23,141

 
$
58,225

 
$
59,068

 
 
 
 
 
 
 
 
 
Denominator:
 
 
 
 
 
 
 
 
Weighted-average common shares for calculating basic earnings per share
 
28,397

 
28,904

 
28,762

 
29,128

Effect of dilutive securities:
 
 
 
 
 
 
 
 
Stock options and nonvested awards
 
408

 
449

 
398

 
509

Weighted-average common shares for calculating diluted earnings per share
 
28,805

 
29,353

 
29,160

 
29,637

 
 
 
 
 
 
 
 
 
Basic earnings per share:
 
 
 
 
 
 
 
 
Income from continuing operations
 
$
0.69

 
$
0.80

 
$
2.03

 
$
2.03

Income (loss) from discontinued operations
 
—

 
—

 
(0.01
)
 
—

Net income per basic share
 
$
0.69

 
$
0.80

 
$
2.02

 
$
2.03

 
 
 
 
 
 
 
 
 
Diluted earnings per share:
 
 
 
 
 
 
 
 
Income from continuing operations
 
$
0.68

 
$
0.79

 
$
2.01

 
$
1.99

Income (loss) from discontinued operations
 
—

 
—

 
(0.01
)
 
—

Net income per diluted share
 
$
0.68

 
$
0.79

 
$
2.00

 
$
1.99