Other Comprehensive Income (Loss) (Components Of Comprehensive Income (Loss) In The Consolidated Statements Of Operations) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Other Comprehensive Income (Loss) [Abstract]
Unrealized appreciation (depreciation) ("URA(D)") of securities - temporary, Before Tax	$ (40,339)	$ (10,927)	$ 21,234	$ (140,046)
URA(D) on securities - OTTI, Before Tax				(399)
Reclassification of net realized losses (gains) included in net income (loss), Before Tax	(1,070)	(1,729)	2,054	(4,062)
Foreign currency translation adjustments, Before Tax	(11,496)	(8,982)	(13,211)	(20,098)
Reclassification of amortization of net gain (loss) included in net income (loss), Before Tax	1,269	2,262	3,640	6,402
Total other comprehensive income (loss), Before Tax	(51,636)	(19,376)	13,717	(158,203)
Unrealized appreciation (depreciation) ("URA(D)") of securities - temporary, Tax Effect	14,118	3,824	(7,556)	49,016
URA(D) on securities - OTTI, Tax Effect				140
Reclassification of net realized losses (gains) included in net income (loss), Tax Effect	374	606	(595)	1,422
Foreign currency translation adjustments, Tax Effect	4,024	3,143	4,624	7,034
Reclassification of amortization of net gain (loss) included in net income (loss), Tax Effect	(444)	(792)	(1,274)	(2,241)
Total other comprehensive income (loss), Tax Effect	18,072	6,781	(4,801)	55,371
Unrealized appreciation (depreciation) ("URA(D)") of securities - temporary, Net of Tax	(26,221)	(7,102)	13,678	(91,030)
URA(D) of securities - OTTI, Net of Tax				(259)
Reclassification of net realized losses (gains) included in net income (loss), Net of Tax	(696)	(1,124)	1,459	(2,640)
Foreign currency translation adjustments, Net of Tax	(7,472)	(5,839)	(8,587)	(13,064)
Benefit plan actuarial net gain (loss), Net of Tax
Reclassification adjustment for amortization of net (gain) loss included in net income (loss)	825	1,470	2,366	4,161
Total other comprehensive income (loss), net of tax	$ (33,564)	$ (12,595)	$ 8,916	$ (102,832)