Investments (Details 3) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013 Security	Dec. 31, 2012 Security
Fair value and gross unrealized losses of fixed maturity securities in a continuous unrealized loss position for greater than 12 months
Number of Securities	2	1
Fair Value	$ 911	$ 212
Gross Unrealized Losses	(55)	(78)
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	1
Fair Value	702
Gross Unrealized Losses	(5)
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	209	212
Gross Unrealized Losses	$ (50)	$ (78)