2. Accounting Policies and Basis of Presentation (Details)	3 Months Ended	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2012	Dec. 31, 2012 Personal Lines [Member]	Dec. 31, 2011 Personal Lines [Member]	Dec. 31, 2012 Commercial Lines [Member]	Dec. 31, 2011 Commercial Lines [Member]	Dec. 31, 2012 Commercial Automobile [Member]	Dec. 31, 2011 Commercial Automobile [Member]
Total premiums earned subject to concentration	0.957	0.962	0.684	0.659	0.162	0.142	0.116	0.156
Premiums earned not subject to concentration	0.043	0.038
Total premiums earned	1.000	1.000