Pension Plans And Other Postretirement Benefit Plans (Changes In Level 3 Assets) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013 Absolute Return [Member] Partnership And Closely Held Investments [Member] Level 3 [Member]	Dec. 31, 2012 Absolute Return [Member] Partnership And Closely Held Investments [Member] Level 3 [Member]	Dec. 31, 2013 Real Estate [Member] Common/Collective Trusts [Member] Level 3 [Member]	Dec. 31, 2012 Real Estate [Member] Common/Collective Trusts [Member] Level 3 [Member]	Dec. 31, 2013 Real Estate [Member] Partnership And Closely Held Investments [Member] Level 3 [Member]	Dec. 31, 2013 Private Equity Funds [Member] Partnership And Closely Held Investments [Member] Level 3 [Member]	Dec. 31, 2012 Private Equity Funds [Member] Partnership And Closely Held Investments [Member] Level 3 [Member]	Dec. 31, 2013 Pension Benefits [Member]	Dec. 31, 2012 Pension Benefits [Member]	Dec. 31, 2011 Pension Benefits [Member]	Dec. 31, 2013 Pension Benefits [Member] Level 3 [Member]	Dec. 31, 2012 Pension Benefits [Member] Level 3 [Member]	Dec. 31, 2013 Pension Benefits [Member] Absolute Return [Member] Partnership And Closely Held Investments [Member]	Dec. 31, 2012 Pension Benefits [Member] Absolute Return [Member] Partnership And Closely Held Investments [Member]		Dec. 31, 2013 Pension Benefits [Member] Absolute Return [Member] Partnership And Closely Held Investments [Member] Level 3 [Member]	Dec. 31, 2012 Pension Benefits [Member] Absolute Return [Member] Partnership And Closely Held Investments [Member] Level 3 [Member]		Dec. 31, 2013 Pension Benefits [Member] Real Estate [Member] Common/Collective Trusts [Member]	Dec. 31, 2012 Pension Benefits [Member] Real Estate [Member] Common/Collective Trusts [Member]	Dec. 31, 2013 Pension Benefits [Member] Real Estate [Member] Common/Collective Trusts [Member] Level 3 [Member]	Dec. 31, 2012 Pension Benefits [Member] Real Estate [Member] Common/Collective Trusts [Member] Level 3 [Member]	Dec. 31, 2013 Pension Benefits [Member] Real Estate [Member] Partnership And Closely Held Investments [Member]	Dec. 31, 2013 Pension Benefits [Member] Real Estate [Member] Partnership And Closely Held Investments [Member] Level 3 [Member]	Dec. 31, 2013 Pension Benefits [Member] Private Equity Funds [Member] Partnership And Closely Held Investments [Member]	Dec. 31, 2012 Pension Benefits [Member] Private Equity Funds [Member] Partnership And Closely Held Investments [Member]		Dec. 31, 2013 Pension Benefits [Member] Private Equity Funds [Member] Partnership And Closely Held Investments [Member] Level 3 [Member]	Dec. 31, 2012 Pension Benefits [Member] Private Equity Funds [Member] Partnership And Closely Held Investments [Member] Level 3 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets as of beginning of year	$ 17,755	$ 16,587	$ 17,596	$ 8,598	$ 0	$ 660	$ 808	$ 481,502	$ 406,061	$ 328,150	$ 58,136	$ 36,011	$ 34,151	$ 17,755	[1]	$ 34,151	$ 17,755	[1]	$ 19,735	$ 17,596	$ 19,735	$ 17,596	$ 3,873	$ 3,873	$ 377	$ 660	[2]	$ 377	$ 660	[2]
Realized gains	0	0	0	411	0	(323)	108
Unrealized gains (losses)	2,396	1,168	2,139	1,087	113	345	80
Purchases (sales), net	14,000	0	0	7,500	3,760	(305)	(336)
Fair value of plan assets as of end of year	$ 34,151	$ 17,755	$ 19,735	$ 17,596	$ 3,873	$ 377	$ 660	$ 481,502	$ 406,061	$ 328,150	$ 58,136	$ 36,011	$ 34,151	$ 17,755	[1]	$ 34,151	$ 17,755	[1]	$ 19,735	$ 17,596	$ 19,735	$ 17,596	$ 3,873	$ 3,873	$ 377	$ 660	[2]	$ 377	$ 660	[2]

[1] This category invests in multiple strategies to diversify risk and reduce volatility. The strategies include: (a) event driven, relative value, convertible, and fixed income arbitrage, (b) distressed investments, (c) long/short equity and fixed income, and (d) market neutral strategies.

[2] This category includes private equity funds that invest primarily in U.S. companies.