Investments (Credit Losses Recognized In Earnings on Fixed Maturity Securities Held by the Company) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Credit losses recognized in earnings on fixed maturity securities
Credit Losses Recognized In Earnings, BOP	$ 1,749	$ 3,387	$ 3,381	$ 3,542
Credit loss impairments previously recognized on securities which matured, paid down, prepaid or were sold during the period	(6)	(59)	(1,625)	(190)
Additional credit loss impairments recognized in the current period on securities previously impaired	0	71	0	223
Increases due to the passage of time on previously recorded credit losses	32	28	87	79
Accretion of credit loss impairments previously recognized due to an increase in cash flows expected to be collected	0	(114)	(68)	(341)
Credit Losses Recognized In Earnings, EOP	$ 1,775	$ 3,313	$ 1,775	$ 3,313