Significant Accounting Policies (Tables)

6 Months Ended

Jun. 30, 2014

Significant Accounting Policies Tables [Abstract]

Schedule Of Earnings Per Share

		Three Months Ended				Six Months Ended
		June 30,		June 30,		June 30,		June 30,
		2014		2013		2014		2013
		(Share amounts in 000's)
Net income	$	106,049	$	116,377	$	207,763	$	132,811
Weighted average common shares outstanding - basic		153,179		152,948		153,110		152,947
Effect of dilutive instruments		1,828		1,565		1,805		1,450
Weighted average common shares outstanding - fully diluted		155,007		154,513		154,915		154,397
Net income per common share - basic	$	0.69	$	0.76	$	1.36	$	0.87
Net income per common share - fully diluted	$	0.68	$	0.75	$	1.34	$	0.86
Number of shares not included in dilutive earnings per share that would have been anti-dilutive because the exercise price was greater than the average market price of the common
shares		1,196		1,332		1,707		2,014