Quarterly report pursuant to Section 13 or 15(d)

Earnings Per Share (Reconciliation Of Common Shares Used In Denominator For Computing Basic And Diluted EPS) (Details)

v3.7.0.1
Earnings Per Share (Reconciliation Of Common Shares Used In Denominator For Computing Basic And Diluted EPS) (Details) - $ / shares
shares in Thousands
3 Months Ended
Mar. 31, 2017
Mar. 31, 2016
Earnings Per Share [Abstract]    
Weighted average shares of common stock outstanding, used in computing basic earnings per share (in shares) 69,606 69,441
Effect of dilutive stock options and restricted stock units (in shares) 808 1,014
Weighted-average shares of common stock outstanding, used in computing diluted earnings per share (in shares) 70,414 70,455
Income Loss From Continuing Operations Per Basic And Diluted Share [Abstract]    
Earnings (loss) per share of common stock, Basic (in dollars per share) $ 0.52 $ 0.46
Earnings (loss) per share of common stock, Diluted (in dollars per share) $ 0.51 $ 0.45