Investments (Credit Losses Recognized In Earnings on Fixed Maturity Securities Held by the Company) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance, beginning of period	$ 8,556	$ 8,547	$ 8,729	$ 14,661
Credit loss impairments previously recognized on securities which matured, paid down, prepaid or were sold during the period	(1,022)	(61)	(1,155)	(5,979)
Credit loss impairment recognized in the current period on securities not previously impaired	0	0	0	0
Additional credit loss impairments recognized in the current period on securities previously impaired	44	0	71	0
Increases due to the passage of time on previously recorded credit losses	78	78	155	280
Accretion of credit loss impairments previously recognized due to an increase in cash flows expected to be collected	(60)	(42)	(204)	(440)
Balance, end of period	$ 7,596	$ 8,522	$ 7,596	$ 8,522