Investments (Realized Investment Gains Losses Net) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Schedule Of Gain Loss On Investments [Line Items]
Realized investment gains (losses), net	$ (4,195)	$ (43,415)	$ (4,366)	$ (81,511)
Fixed Maturities [Member]
Schedule Of Gain Loss On Investments [Line Items]
Realized investment gains (losses), net	71	5,096	877	7,808
Equity Securities [Member]
Schedule Of Gain Loss On Investments [Line Items]
Realized investment gains (losses), net	0	0	1	1
Commercial Mortgage Loans [Member]
Schedule Of Gain Loss On Investments [Line Items]
Realized investment gains (losses), net	0	330	0	368
Derivative [Member]
Schedule Of Gain Loss On Investments [Line Items]
Realized investment gains (losses), net	(4,266)	(48,839)	(5,244)	(89,665)
Other [Member]
Schedule Of Gain Loss On Investments [Line Items]
Realized investment gains (losses), net	$ 0	$ (2)	$ 0	$ (23)