Investments (Credit Losses Recognized In Earnings on Fixed Maturity Securities Held by the Company) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Credit losses recognized in earnings on fixed maturity securities
Credit Losses Recognized In Earnings, BOP	$ 93	$ 1,800
Credit loss impairments previously recognized on securities which matured, paid down, prepaid or were sold during the period	(5)	(1,673)
Additional credit loss impairments recognized in the current period on securities previously impaired	9	0
Accretion of credit loss impairments previously recognized due to an increase in cash flows expected to be collected	(3)	(8)
Credit Losses Recognized In Earnings, EOP	$ 94	$ 119