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Earnings Per Share (Tables)
12 Months Ended
Dec. 31, 2012
Earnings Per Share [Abstract]  
Calculation of basic and diluted earnings per share, including effect of dilutive securities
The calculation of basic and diluted earnings per share, including the effect of dilutive securities is as follows:

(in thousands, except per share data)
 
 
Year Ended December 31, 2012
 
 
Year Ended December 31, 2011
 
Net income (loss)
 
$
145,929
 
 
$
(1,893
)
Weighted average common shares outstanding
 
 
43,250
 
 
 
43,075
 
 
 
 
 
 
 
 
 
 
Assumed dilutive effect of stock option exercise(s)
 
 
-
 
 
 
-
 
Weighted average common shares outstanding assuming dilution
 
 
43,250
 
 
 
43,075
 
Net income (loss) per common share - basic
 
$
3.37
 
 
$
(0.04
)
Net income (loss) per common share - assuming dilution
 
$
3.37
 
 
$
(0.04
)
Schedule of antidilutive securities excluded from computation of earnings per share
Options to purchase shares of common stock which were excluded from the computation of diluted earnings per share due to the effect of being antidilutive in the computation of earnings per share were as follows:

(in thousands)
 
December 31, 2012
 
 
December 31, 2011
 
Option shares
 
 
-
 
 
 
816