Investments (Details 4) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012 Securities	Dec. 31, 2011 Securities
Fair value and gross unrealized losses of fixed maturity securities in a continuous unrealized loss position for greater than 12 months
Number of Securities	1	4
Fair Value	$ 212	$ 2,951
12 months or longer, Total Gross Unrealized Losses	(78)	(202)
Less than or equal to 10% [Member]
Fair value and gross unrealized losses of fixed maturity securities in a continuous unrealized loss position for greater than 12 months
Number of Securities		3
Fair Value		2,760
12 months or longer, Total Gross Unrealized Losses		(92)
Greater than 10% [Member]
Fair value and gross unrealized losses of fixed maturity securities in a continuous unrealized loss position for greater than 12 months
Number of Securities	1	1
Fair Value	212	191
12 months or longer, Total Gross Unrealized Losses	$ (78)	$ (110)