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Earnings (Loss) Per Common Share (Tables)
 9 Months Ended
Sep. 30, 2014
Earnings Per Share [Abstract]  
Computations of basic and diluted earnings (loss) per common share
The following tables set forth the computations of basic and diluted earnings (loss) per common share for the three and nine months ended September 30, 2014 and 2013 (in thousands, except per share data):
 
 
 
Three Months Ended September 30,
 
Nine Months Ended September 30,
Basic earnings (loss) per common share:
 
2014
 
2013
 
2014
 
2013
Numerator:
 
 
 
 
 
 
 
 
Net income (loss)
 
$
(239
)
 
$
4,877

 
$
(5,381
)
 
$
6,211

 
 
 
 
 
 
 
 
 
Denominator:
 
 
 
 
 
 
 
 
Weighted-average common shares outstanding
 
27,744

 
29,396

 
29,203

 
29,075

 
 
 
 
 
 
 
 
 
Basic earnings (loss) per common share
 
$
(0.01
)
 
$
0.17

 
$
(0.18
)
 
$
0.21


 
 
Three Months Ended September 30,
 
Nine Months Ended September 30,
Diluted earnings (loss) per common share:
 
2014
 
2013
 
2014
 
2013
Numerator:
 
 
 
 
 
 
 
 
Net income (loss)
 
$
(239
)
 
$
4,877

 
$
(5,381
)
 
$
6,211

 
 
 
 
 
 
 
 
 
Denominator:
 
 
 
 
 
 
 
 
Weighted-average common shares outstanding
 
27,744

 
29,396

 
29,203

 
29,075

 Incremental shares from stock-based compensation plans
 
—

 
419

 
—

 
442

Denominator for diluted earnings (loss) per common share
 
27,744

 
29,815

 
29,203

 
29,517

 
 
 
 
 
 
 
 
 
Diluted earnings (loss) per common share
 
$
(0.01
)
 
$
0.16

 
$
(0.18
)
 
$
0.21