XML 21 R10.htm IDEA: XBRL DOCUMENT v3.7.0.1
Earnings Per Share (Notes)
6 Months Ended
Jun. 30, 2017
Earnings Per Share [Abstract]  
EARNINGS PER SHARE
EARNINGS PER SHARE

Basic earnings per share are computed based on the weighted average number of common shares outstanding during the period. Diluted earnings per share are 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; and ii) contingently issuable time-based and performance-based restricted stock units, along with associated dividend equivalent rights. 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 six month periods ended June 30, 2017, unvested performance-based restricted stock units and related dividend equivalent rights in the total amount of 273 thousand were excluded from the dilutive calculation because the performance goals had not been met, with 305 thousand excluded for the three and six month periods ended June 30, 2016.

Net income is the same for both the basic and diluted earnings per share computations. The denominators of the basic and diluted earnings per share computations are as follows (in thousands):
 
Three Months Ended
June 30,
 
Six Months Ended
June 30,
 
2017
 
2016
 
2017
 
2016
Weighted-average common shares outstanding—basic and diluted
89,063

 
88,902

 
89,033

 
88,867