Investments (Major Categories of Investment Gains and Losses) (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
Gain (Loss) on Investments [Line Items]
Net realized investment gains	$ 312	$ 1,030	$ 400	$ 1,057
Fixed Maturities [Member]
Gain (Loss) on Investments [Line Items]
Net realized investment gains	159	104	249	127
Equity Securities [Member]
Gain (Loss) on Investments [Line Items]
Net realized investment gains	0	928	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	153	(2)	151	2
Other-than-Temporary Impairment [Member]
Gain (Loss) on Investments [Line Items]
Net realized investment gains	$ 0	$ 0	$ 0	$ 0