XML 64 R36.htm IDEA: XBRL DOCUMENT v2.4.1.9
Earnings per share (Tables)
12 Months Ended
Dec. 31, 2014
Earnings Per Share [Abstract]  
Reconciliation of Shares Used to Compute Basic and Diluted Earnings per Share
The following is a reconciliation of the shares used to compute basic and diluted earnings per share (in thousands):
 
 
Year Ended December 31,
 
 
2014
 
2013
 
2012
Weighted average number of common shares outstanding used to compute basic earnings per share
 
53,437

 
53,481

 
46,739

Dilutive effect of stock-based awards
 
857

 
1,074

 
1,087

Number of shares used to compute diluted earnings per share
 
54,294

 
54,555

 
47,826