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Earnings (Loss) Per Share (Tables)
9 Months Ended
Sep. 30, 2015
Earnings Per Share [Abstract]  
Reconciliation of Shares Used in Calculating Earnings Per Basic and Diluted Shares
A reconciliation of shares used in calculating earnings per basic and diluted shares follows (in thousands):
 
Three Months Ended 
 September 30,
 
Nine Months Ended 
 September 30,
 
2015
 
2014
 
2015
 
2014
Weighted average common shares outstanding—basic
25,450

 
25,879

 
25,800

 
25,811

Dilutive effect of stock-based awards

 
410

 
265

 
684

Dilutive effect of convertible senior notes

 
1,043

 
847

 
1,118

Dilutive effect of warrants

 

 

 
9

Weighted average common shares outstanding—diluted
25,450

 
27,332

 
26,912

 
27,622