Investments (Fixed Maturities Proceeds)(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
Equity Securities [Member]
Available For Sale
Proceeds from sales	$ 4	$ 0		$ 5		$ 0
Proceeds from maturities/repayments	0	0		0		0
Gross investment gains from sales	2	0		2		0
Available-for-sale Securities, Gross Realized Losses	0	0		0		0
Fixed maturity and equity security impairments
Writedowns for impairments on equity securities		0		0		0
Fixed Maturities, Available For Sale [Member]
Available For Sale
Proceeds from sales	59,715	186,603		181,143		380,099
Proceeds from maturities/repayments	249,890	282,052		842,968		655,857
Gross investment gains from sales	6,506	2,233		14,411		16,266
Available-for-sale Securities, Gross Realized Losses	2,597	109		2,694		133
Fixed maturity and equity security impairments
Net writedowns for other-than-temporary impairment losses on fixed maturities recognized in earnings		$ (71)	[1]	$ 0	[1]	$ (223)	[1]

[1] Excludes the portion of other-than-temporary impairments recorded in “Other comprehensive income (loss),” representing any difference between the fair value of the impaired debt security and the net present value of its projected future cash flows at the time of the impairment.