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Earnings per common share (Tables)
6 Months Ended
Jun. 30, 2013
Earnings Per Share [Abstract]  
Schedule of weighted average number of shares [Table Text Block]
A reconciliation of the weighted average common shares outstanding used in the basic and diluted earnings per share calculation was as follows:
 
Three Months Ended
Six Months Ended
 
June 30,
June 30,
 
2013

2012

2013

2012

 
(In thousands)
 
 
Weighted average common shares outstanding - basic
188,831

188,831

188,831

188,821

Effect of dilutive stock options and performance share awards
632

276

629

275

Weighted average common shares outstanding - diluted
189,463

189,107

189,460

189,096

Shares excluded from the calculation of diluted earnings per share