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Earnings Per Share (Notes)
9 Months Ended
Sep. 30, 2014
Earnings Per Share [Abstract]  
EARNINGS PER SHARE
EARNINGS PER SHARE

Basic earnings per share is computed based on the weighted average number of common shares outstanding during the period. Diluted earnings per share is computed using the weighted average number of common shares outstanding and the effect of dilutive potential common shares outstanding during the period using the treasury stock method. Potential common shares consist of: i) employee stock purchase plan shares; ii) unvested time-based and performance-based restricted stock units, along with associated dividend equivalent rights; and iii) shares issuable pursuant to an equity forward sale agreement (EFSA). See Note 6, Equity, for additional information on the EFSA and its impact on earnings per share. Unvested performance-based restricted stock units and associated dividend equivalent rights are included in dilutive potential common shares only after the performance criteria have been met. For the three and nine month periods ended September 30, 2014, unvested performance-based restricted stock units and associated dividend equivalent rights of approximately 361,000 were excluded from the dilutive calculation because the performance goals had not been met. For the three and nine month periods ended September 30, 2013, unvested performance-based restricted stock units and associated dividend equivalent rights of approximately 440,000 were similarly excluded.

Net income attributable to PGE common shareholders is the same for both the basic and diluted earnings per share computations. The reconciliations of the denominators of the basic and diluted earnings per share computations are as follows (in thousands):
 
Three Months Ended
September 30,
 
Nine Months Ended
September 30,
 
2014
 
2013
 
2014
 
2013
Weighted-average common shares outstanding—basic
78,203

 
77,637

 
78,170

 
76,401

Dilutive effect of potential common shares
2,022

 
693

 
1,807

 
302

Weighted-average common shares outstanding—diluted
80,225

 
78,330

 
79,977

 
76,703