Significant Accounting Policies (Tables)

6 Months Ended

Jun. 30, 2013

Significant Accounting Policies Tables [Abstract]

Schedule Of Earnings Per Share

		Three Months Ended				Six Months Ended
		June 30,		June 30,		June 30,		June 30,
		2013		2012		2013		2012
		(Share amounts in 000's)
Net income (loss)	$	116,377	$	(1,186,982)	$	132,811	$	(1,102,723)
Weighted average common shares outstanding - basic		152,948		152,921		152,947		152,761
Effect of dilutive instruments		1,565		-		1,450		-
Weighted average common shares outstanding - fully diluted		154,513		152,921		154,397		152,761
Net income (loss) per common share - basic	$	0.76	$	(7.76)	$	0.87	$	(7.22)
Net income (loss) per common share - fully diluted	$	0.75	$	(7.76)	$	0.86	$	(7.22)
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		1,332		1,859		2,014		1,886