Earnings Per Share (Reconciliation Of Common Shares Used In Denominator For Computing Basic And Diluted EPS) (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Earnings Per Share [Abstract]
Weighted average shares of common stock outstanding, used in computing basic earnings per share (in shares)	70,080	69,418
Effect of dilutive stock options and restricted stock units (in shares)	930	972
Weighted-average shares of common stock outstanding, used in computing diluted earnings per share (in shares)	71,010	70,390
Income Loss From Continuing Operations Per Basic And Diluted Share [Abstract]
Earnings (loss) per share of common stock, Basic (in dollars per share)	$ 0.38	$ 0.32
Earnings (loss) per share of common stock, Diluted (in dollars per share)	$ 0.37	$ 0.32