Fair Value Disclosure (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Debt securities [Abstract]
Debt securities	$ 126,013	$ 101,755
Equity securities [Abstract]
Equity securities	34,734	20,982
Recurring [Member]
Debt securities [Abstract]
United States government obligations and authorities	23,745	27,392
Obligations of states and political subdivisions	23,677	3,939
Corporate	75,201	67,313
International	3,390	3,111
Debt securities	126,013	101,755
Equity securities [Abstract]
Common stocks	34,734	20,982
Equity securities	34,734	20,982
Total debt and equity securities	160,747	122,737
Level 1 [Member] | Recurring [Member]
Debt securities [Abstract]
United States government obligations and authorities	15,468	12,464
Obligations of states and political subdivisions	0	0
Corporate	67,351	67,313
International	0	0
Debt securities	82,819	79,777
Equity securities [Abstract]
Common stocks	34,734	20,982
Equity securities	34,734	20,982
Total debt and equity securities	117,553	100,759
Level 2 [Member] | Recurring [Member]
Debt securities [Abstract]
United States government obligations and authorities	8,277	14,928
Obligations of states and political subdivisions	23,677	3,939
Corporate	7,850	0
International	3,390	3,111
Debt securities	43,194	21,978
Equity securities [Abstract]
Common stocks	0	0
Equity securities	0	0
Total debt and equity securities	43,194	21,978
Level 3 [Member] | Recurring [Member]
Debt securities [Abstract]
United States government obligations and authorities	0	0
Obligations of states and political subdivisions	0	0
Corporate	0	0
International	0	0
Debt securities	0	0
Equity securities [Abstract]
Common stocks	0	0
Equity securities	0	0
Total debt and equity securities	$ 0	$ 0