Out Of Period Adjustments (Schedule Of Financial Statement Line Items Impacted By Revisions By More Than 1%) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Provision (Benefit) for Income Taxes									$ 10,429	$ (12,268)	$ (157)
Net Income	(48,253)	(2,565)	(664)	(3,217)	17,242	(2,222)	1,859	1,653	(54,699)	18,532	21,962
Comprehensive Income									(57,179)	29,568	20,963
Provision (Benefit) for Income Taxes, % Impact										2.55%
Net Income, % Impact										2.07%
Comprehensive Income, % Impact										1.28%
Restatement Adjustment [Member]
Provision (Benefit) for Income Taxes										(305)
Net Income										375
Comprehensive Income										375
As Previously Reported [Member]
Provision (Benefit) for Income Taxes										(11,963)
Net Income										18,157
Comprehensive Income										$ 29,193