Reserve for Unpaid Losses (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Reserves [Abstract]
Liability for Claims and Claims Adjustment Expense	$ 33,600	$ 47,414	$ 44,112
Reinsurance Recoverable on Unpaid Losses and LAE	3,318	23,814	23,447
Liability for Unpaid Claims and Claims Adjustment Expense, Net	30,282	23,600	20,665
Liability for Unpaid Claims and Claims Adjustment Expense, Incurred Claims Current Year	57,739	43,019	41,527
Liability for Unpaid Claims and Claims Adjustment Expense, Incurred Claims, Prior Years	670	(4,158)	1,006
Liability for Unpaid Claims and Claims Adjustment Expense, Incurred Claims	58,409	38,861	42,533
Liability for Unpaid Claims and Claims Adjustment Expense, Claims Paid, Current Year	37,906	28,857	27,065
Liability for Unpaid Claims and Claims Adjustment Expense, Claims Paid, Prior Years	17,028	3,322	12,533
Liability for Unpaid Claims and Claims Adjustment Expense, Claims Paid	54,934	32,179	39,598
Liability for Unpaid Claims and Claims Adjustment Expense, Net	33,757	30,282	23,600
Reinsurance Recoverable on Unpaid Losses and LAE	1,935	3,318	23,814
Liability for Claims and Claims Adjustment Expense	$ 35,692	$ 33,600	$ 47,414