Investments Gains and Losses by Security Type (Details) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Gross Realized Gain (Loss)	$ (38,000)	$ 37,000	$ (199,000)	$ 155,000
Quarter to Date [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Gross Realized Gains	2,000	42,000	61,000	317,000
Available-for-sale, Gross Realized Gains, Fair Value at Sale	6,007,000	3,066,000	20,289,000	8,227,000
Available-for-sale Securities, Gross Realized Losses	(40,000)	(5,000)	(260,000)	(162,000)
Available-for-sale, Gross Realized Losses, Fair Value at Sale	4,078,000	200,000	42,753,000	9,634,000
Available-for-sale Securities, Gross Realized Gain (Loss)	(38,000)	37,000	(199,000)	155,000
Available-for-sale, Gross Realized Gains (Losses), Fair Value at Sale	10,085,000	3,266,000	63,042,000	17,861,000
Fixed Maturities [Member] | Quarter to Date [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Gross Realized Gains	2,000	42,000	30,000	198,000
Available-for-sale, Gross Realized Gains, Fair Value at Sale	6,007,000	3,066,000	20,134,000	7,340,000
Available-for-sale Securities, Gross Realized Losses	40,000	0	258,000	141,000
Available-for-sale, Gross Realized Losses, Fair Value at Sale	4,078,000	0	42,725,000	9,243,000
Equity Securities [Member] | Quarter to Date [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Gross Realized Gains			31,000	119,000
Available-for-sale, Gross Realized Gains, Fair Value at Sale			155,000	887,000
Available-for-sale Securities, Gross Realized Losses	0	5,000	2,000	21,000
Available-for-sale, Gross Realized Losses, Fair Value at Sale	$ 0	$ 200,000	$ 28,000	$ 391,000