Subsequent Events (Details) (USD $) In Thousands, except Share data, unless otherwise specified	0 Months Ended			3 Months Ended			12 Months Ended
	Jan. 11, 2013	Jan. 08, 2013 InsurancePolicies	Mar. 14, 2012	Mar. 31, 2013	Dec. 31, 2012	Mar. 31, 2010	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Feb. 01, 2013
Subsequent Event [Line Items]
Stock Issued During Period, Shares, New Issues	750,000				5,000,000
Proceeds from Issuance of Common Stock	$ 3,631						$ 23,947	$ 0	$ 0
Policies Assumed from Citizens		15,133
Assumed In-Force Premium		27,348
Assumed Premiums Written		$ 16,136					$ (4)	$ 4,200	$ 2,762
Approved Rate Increase										9.50%
Common Stock, Dividends, Per Share, Declared			$ 0.05	$ 0.03	$ 0.03	$ 0.05	$ 0.08	$ 0.05	$ 0.05