Schedule V - Valuation and Qualifying Accounts (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Valuation and Qualifying Accounts Disclosure [Line Items]
Uncollectible Premium Liability, Beg. Balance	$ 77	$ 61	$ 370
Charged to Costs and Expenses	16	16	42
Deductions	(69)	0	(351)
Uncollectible Premium Liability, End. Balance	$ 24	$ 77	$ 61