Earnings Per Common Share (Tables)

9 Months Ended

Sep. 30, 2011

Earnings Per Common Share [Abstract]

Schedule Of Earnings Per Share Basic And Diluted

	Three Months Ended September 30,				Nine Months Ended September 30,
	2011		2010		2011		2010
Numerator—basic and diluted
Net income	$	29,439	$	20,164	$	64,022	$	57,129
Denominator
Weighted average number of common shares outstanding—basic		40,182		45,471		41,535		45,708
Effect of dilutive stock options		884		803		895		947
Effect of dilutive convertible notes		647		449		722		950
Effect of dilutive restricted shares		554		258		519		285
Weighted average number of common shares outstanding—diluted		42,267		46,981		43,671		47,890
Earnings per common share—basic	$	0.73	$	0.44	$	1.54	$	1.25
Earnings per common share—diluted	$	0.70	$	0.43	$	1.47	$	1.19
Antidilutive stock options and restricted shares		2,612		2,059		2,330		1,671