Investments (Major Categories of Investment Gains and Losses) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Gain (Loss) on Investments [Line Items]
Net realized investment gains	$ 141	$ 3,297	$ 541	$ 4,354
Fixed Maturities [Member]
Gain (Loss) on Investments [Line Items]
Net realized investment gains	117	(17)	366	110
Equity Securities [Member]
Gain (Loss) on Investments [Line Items]
Net realized investment gains	0	0	0	928
Trading Securities [Member]
Gain (Loss) on Investments [Line Items]
Net realized investment gains	0	0	0	0
Other, Principally Real Estate [Member]
Gain (Loss) on Investments [Line Items]
Net realized investment gains	24	3,314	175	3,316
Other-than-Temporary Impairment [Member]
Gain (Loss) on Investments [Line Items]
Net realized investment gains	$ 0	$ 0	$ 0	$ 0