Earnings Per Share (Tables)

9 Months Ended

Sep. 30, 2014

Earnings Per Share [Abstract]

Schedule Of Earnings Per Share Basic And Diluted By Common Class [Text Block]

The following table sets forth the computation of basic and diluted earnings per share on net income (in thousands, except per share information):

	Three months ended September 30,				Nine months ended September 30,
	2014		2013		2014		2013
Earnings:
Net income (numerator for basic and diluted calculations)	$	157,996	$	137,955	$	492,956	$	273,878
Shares:
Weighted average outstanding shares (denominator for basic calculation)	68,643		70,865		69,426		72,342
Equivalent shares from outstanding stock options	692		526		675		498
Denominator for diluted calculation	69,335		71,391		70,101		72,840
Earnings per share:
Basic	$	2.30	$	1.95	$	7.10	$	3.79
Diluted	$	2.28	$	1.93	$	7.03	$	3.76