Other Comprehensive Income (Loss) (Components Of Accumulated Other Comprehensive Income (Loss), Net Of Tax, In The Consolidated Balance Sheets) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013
Other Comprehensive Income (Loss) [Abstract]
Beginning balance of URA (D) on securities			$ 55,457	$ 157,163	$ 157,163
Current period change in URA (D) of investments - temporary			15,137		(101,447)
Current period change in URA (D) of investments - non-credit OTTI					(259)
Ending balance of URA (D) on securities	70,594		70,594		55,457
Beginning balance of foreign currency translation adjustments			71,087	90,215	90,215
Current period change in foreign currency translation adjustments			(8,587)		(19,128)
Ending balance of foreign currency translation adjustments	62,500		62,500		71,087
Beginning balance of benefit plan net gain (loss)			(38,896)	(62,511)	(62,511)
Current period change in benefit plan net gain (loss)	825	1,470	2,366	4,161	23,615
Ending balance of benefit plan net gain (loss)	(36,530)		(36,530)		(38,896)
Ending balance of accumulated other comprehensive income (loss)	$ 96,564		$ 96,564		$ 87,648