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, 2012
Mar. 31, 2011
Earnings Per Share [Abstract]    
Weighted average shares of common stock outstanding, used in computing basic earnings per share 33,705 33,799
Effect of dilutive stock options and restricted stock units 248 489
Weighted-average shares of common stock outstanding, used in computing diluted earnings per share 33,953 34,288
Earnings per share of common stock, Basic $ 0.12 $ 0.38
Earnings per share of common stock, Diluted $ 0.11 $ 0.37