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		6 Months Ended		12 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 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			42,054		(101,447)
Current period change in URA (D) of investments - non-credit OTTI					(259)
Ending balance of URA (D) on securities	97,511		97,511		55,457
Beginning balance of foreign currency translation adjustments			71,087	90,215	90,215
Current period change in foreign currency translation adjustments			(1,115)		(19,128)
Ending balance of foreign currency translation adjustments	69,972		69,972		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)	770	1,345	1,541	2,691	23,615
Ending balance of benefit plan net gain (loss)	(37,355)		(37,355)		(38,896)
Ending balance of accumulated other comprehensive income (loss)	$ 130,128		$ 130,128		$ 87,648