Earnings Per Share (Tables)

3 Months Ended

9 Months Ended

Sep. 30, 2011

Sep. 30, 2011

Earnings Per Share [Abstract]

Earnings And Diluted Earnings Per Share

	Net Income
For the Three Months Ended      September 30,	Income		Shares		Earnings per Share
2011
Earnings	$	21,887		20,674	$	1.06
Dilutive stock options		-		293
Nonvested stock awards		-		88
Diluted earnings	$	21,887		21,055	$	1.04
2010
Earnings	$	20,988		22,597	$	0.93
Dilutive stock options		-		304
Nonvested stock awards		-		95
Diluted earnings	$	20,988		22,996	$	0.91

	Net Income
For the Nine Months Ended         September 30,	Income		Shares		Earnings per Share
2011
Earnings	$	60,274		20,934	$	2.88
Dilutive stock options		-		379
Nonvested stock awards		-		87
Diluted earnings	$	60,274		21,400	$	2.82
2010
Earnings	$	59,201		22,604	$	2.62
Dilutive stock options		-		314
Nonvested stock awards		-		88
Diluted earnings	$	59,201		23,006	$	2.57

Changes In Stock Price Impact On Number Of Diluted Earnings Per Share And Issuable Upon Conversion Of Notes

		Shares				Total Treasury		Shares Due			Incremental
		Underlying 1.875%				Method		to the Company			Shares Issued/
Share		Convertible		Warrant		Incremental		under Notes			Received by the Company
Price		Notes		Shares		Shares (a)		Hedges			upon Conversion (b)
$	80.73		28,058		-		28,058		(30,015	)		(1,957	)
$	90.73		283,300		-		283,300		(303,066	)		(19,766	)
$	100.73		487,865		-		487,865		(521,903	)		(34,038	)
$	110.73		655,480		119,789		775,269		(701,214	)		74,055
$	120.73		795,329		317,554		1,112,883		(850,820	)		262,063
$	130.73		913,783		485,064		1,398,847		(977,538	)		421,309

a) Represents the number of incremental shares that must be included in the calculation of fully diluted shares under U.S. GAAP.

b) Represents the number of incremental shares to be issued by the Company upon conversion of the 1.875% Convertible Notes, assuming concurrent settlement of the note hedges and warrants.