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, 2014	Mar. 31, 2013
Earnings Per Share [Abstract]
Weighted average shares of common stock outstanding, used in computing basic earnings per share (in shares)	34,709	34,167
Effect of dilutive stock options and restricted stock units	486	282
Weighted-average shares of common stock outstanding, used in computing diluted earnings per share (in shares)	35,195	34,449
Earnings per share of common stock:
Earnings per share of common stock, Basic (in dollars per share)	$ 0.64	$ 0.30
Earnings per share of common stock, Diluted (in dollars per share)	$ 0.63	$ 0.29