Investments by Maturity (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Schedule of Available-for-sale Securities [Line Items]
Due in one year or less, Amortized Cost	$ 18,439	$ 5,557
Due in one year or less, Fair Value	18,448	5,608
Due after one year through five years, Amortized Cost	59,966	58,378
Due after one year through five years, Fair Value	59,885	60,323
Due after five years through ten years, Amortized Cost	22,028	24,983
Due after five years through ten years, Fair Value	21,282	25,900
Due after ten years, Amortized Cost	23,393	17,769
Due after ten years, Fair Value	23,065	18,396
Total Fixed Maturity Securities, Amortized Cost	123,905	107,095
Fixed Maturity Securities	122,760	110,641
Mortgage-backed securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Debt Maturities, without Single Maturity Date, Amortized Cost	79	285
Available-for-sale Securities, Debt Maturities, without Single Maturity Date, Fair Value	80	289
Asset-backed Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Debt Maturities, without Single Maturity Date, Amortized Cost	0	123
Available-for-sale Securities, Debt Maturities, without Single Maturity Date, Fair Value	$ 0	$ 125