Earnings Per Share (Reconciliation Of Common Shares Used In Denominator For Computing Basic And Diluted EPS) (Details) - $ / shares shares in Thousands |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Sep. 30, 2017 |
Sep. 30, 2016 |
Sep. 30, 2017 |
Sep. 30, 2016 |
|
| Earnings Per Share [Abstract] | ||||
| Weighted average shares of common stock outstanding, used in computing basic earnings per share (in shares) | 69,815 | 69,761 | 69,698 | 69,632 |
| Effect of dilutive stock options and restricted stock units (in shares) | 574 | 869 | 692 | 954 |
| Weighted-average shares of common stock outstanding, used in computing diluted earnings per share (in shares) | 70,389 | 70,630 | 70,390 | 70,586 |
| Income Loss From Continuing Operations Per Basic And Diluted Share [Abstract] | ||||
| Earnings (loss) per share of common stock, Basic (in dollars per share) | $ 1.26 | $ 1.20 | $ 1.61 | $ 1.54 |
| Earnings (loss) per share of common stock, Diluted (in dollars per share) | $ 1.25 | $ 1.18 | $ 1.59 | $ 1.52 |
| X | ||||||||||
- Definition Income Loss from continuing operations per basic and diluted share abstract [Abstract] No definition available.
|
| X | ||||||||||
- References No definition available.
|
| X | ||||||||||
- Definition The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition The sum of dilutive potential common shares or units used in the calculation of the diluted per-share or per-unit computation. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition The average number of shares or units issued and outstanding that are used in calculating diluted EPS or earnings per unit (EPU), determined based on the timing of issuance of shares or units in the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Number of [basic] shares or units, after adjustment for contingently issuable shares or units and other shares or units not deemed outstanding, determined by relating the portion of time within a reporting period that common shares or units have been outstanding to the total time in that period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|