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Earnings Per Share (Notes)
3 Months Ended
Mar. 31, 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 months ended March 31, 2014 and 2013, unvested performance-based restricted stock units and associated dividend equivalent rights of approximately 363,000 and 431,000, respectively, were excluded from the dilutive calculation because the performance goals had not been met.

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 March 31,
 
2014
 
2013
Weighted-average common shares outstanding—basic
78,992

 
75,608

Dilutive effect of potential common shares
1,164

 
91

Weighted-average common shares outstanding—diluted
80,156

 
75,699