Investments (Credit Losses Recognized In Earnings on Fixed Maturity Securities Held by the Company) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance, beginning of period	$ 8,729	$ 14,660
Credit loss impairments previously recognized on securities which matured, paid down, prepaid or were sold during the period	(1,719)	(6,533)
Credit loss impairments recognized in the current period on securities not previously impaired	0	0
Additional credit loss impairments recognized in the current period on securities previously impaired	71	0
Increases due to the passage of time on previously recorded credit losses	213	1,098
Accretion of credit loss impairments previously recognized due to an increase in cash flows expected to be collected	(253)	(496)
Balance, end of period	$ 7,041	$ 8,729