Quarterly report pursuant to Section 13 or 15(d)

Earnings Per Share (Details)

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Earnings Per Share (Details) (USD $)
In Thousands, except Per Share data, unless otherwise specified
3 Months Ended 9 Months Ended
Sep. 30, 2014
Sep. 30, 2013
Sep. 30, 2014
Sep. 30, 2013
Basic and Diluted Earnings Per Common Share        
Basic weighted average number of shares outstanding 39,123 36,226 38,977 36,060
Convertible debt 2,176 [1] 2,176 [1] 2,176 [1] 2,176 [1]
Effect of dilutive securities:        
Stock options and unvested restricted stock 357 463 411 535
Diluted weighted average shares outstanding 41,656 38,865 41,564 38,771
Net earnings as reported $ 32,577 $ 38,191 $ 93,033 $ 78,375
Interest attributable to convertible senior notes, net of income taxes 378 393 1,135 1,180
Net earnings for diluted earnings per share $ 32,955 $ 38,584 $ 94,168 $ 79,555
Basic earnings per share $ 0.83 $ 1.05 $ 2.39 $ 2.17
Diluted earnings per share (1) $ 0.79 [1] $ 0.99 [1] $ 2.27 [1] $ 2.05 [1]
Antidilutive stock options not included in the calculation of diluted income per share 22 10 24 5
[1] (1)In accordance with ASC Subtopic 260-10, Earnings Per Share, we calculate the dilutive effect of convertible securities using the "if-converted" method.