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)

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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) 70,080us-gaap_WeightedAverageNumberOfSharesOutstandingBasic 69,418us-gaap_WeightedAverageNumberOfSharesOutstandingBasic
Effect of dilutive stock options and restricted stock units (in shares) 930us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustment 972us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustment
Weighted-average shares of common stock outstanding, used in computing diluted earnings per share (in shares) 71,010us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding 70,390us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding
Income Loss From Continuing Operations Per Basic And Diluted Share [Abstract]    
Earnings (loss) per share of common stock, Basic (in dollars per share) $ 0.38us-gaap_EarningsPerShareBasic $ 0.32us-gaap_EarningsPerShareBasic
Earnings (loss) per share of common stock, Diluted (in dollars per share) $ 0.37us-gaap_EarningsPerShareDiluted $ 0.32us-gaap_EarningsPerShareDiluted