Earnings Per Share (Tables)

3 Months Ended

Mar. 31, 2014

Earnings Per Share [Abstract]

Comparison Of Basic And Diluted Earnings Per Share

The following table sets forth the comparison of basic and diluted earnings per share:

	Three Months Ended   March 31,
	2014		2013
Basic earnings per share:
Net income	$	176,972	$	158,992
Weighted average common shares outstanding	33,181,729		34,613,606
Basic earnings per share	$	5.33	$	4.59

	Three Months Ended   March 31,
	2014		2013
Diluted earnings per share:
Net income	$	176,972	$	158,992
Weighted average common shares outstanding	33,181,729		34,613,606
Share equivalents:
Stock options	487,986		482,207
RSUs and performance-based equity awards	188,537		335,575
Employee share purchase plan	3,302		455
Weighted average common shares and common share equivalents outstanding - diluted	33,861,554		35,431,843
Diluted earnings per share	$	5.23	$	4.49