Fair Value (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011
Total debt securities	$ 384,288	$ 380,469
Total equity securities	41,694	44,159
Total debt and equity securities	425,982	424,628
US Treasury Securities and Obligation [Member]
Total debt securities	16,101	11,176
Corporate Bond Securities [Member]
Total debt securities	90,324	93,922
Collateralized Corporate Bank Loans [Member]
Total debt securities	109,333	92,893
Municipal Bonds [Member]
Total debt securities	165,285	178,341
Collateralized Mortgage Backed Securities [Member]
Total debt securities	3,245	4,137
Equity Securities Financial Services [Member]
Total equity securities	14,651	15,821
Equity Securities, Other [Member]
Total equity securities	27,043	28,338
Fair Value, Inputs, Level 1 [Member]
Total debt securities	0	0
Total equity securities	41,694	44,159
Total debt and equity securities	41,694	44,159
Fair Value, Inputs, Level 1 [Member] | US Treasury Securities and Obligation [Member]
Total debt securities	0	0
Fair Value, Inputs, Level 1 [Member] | Corporate Bond Securities [Member]
Total debt securities	0	0
Fair Value, Inputs, Level 1 [Member] | Collateralized Corporate Bank Loans [Member]
Total debt securities	0	0
Fair Value, Inputs, Level 1 [Member] | Municipal Bonds [Member]
Total debt securities	0	0
Fair Value, Inputs, Level 1 [Member] | Collateralized Mortgage Backed Securities [Member]
Total debt securities	0	0
Fair Value, Inputs, Level 1 [Member] | Equity Securities Financial Services [Member]
Total equity securities	14,651	15,821
Fair Value, Inputs, Level 1 [Member] | Equity Securities, Other [Member]
Total equity securities	27,043	28,338
Fair Value, Inputs, Level 2 [Member]
Total debt securities	364,517	359,861
Total equity securities	0	0
Total debt and equity securities	364,517	359,861
Fair Value, Inputs, Level 2 [Member] | US Treasury Securities and Obligation [Member]
Total debt securities	16,101	11,176
Fair Value, Inputs, Level 2 [Member] | Corporate Bond Securities [Member]
Total debt securities	90,324	93,922
Fair Value, Inputs, Level 2 [Member] | Collateralized Corporate Bank Loans [Member]
Total debt securities	108,350	91,707
Fair Value, Inputs, Level 2 [Member] | Municipal Bonds [Member]
Total debt securities	146,497	158,919
Fair Value, Inputs, Level 2 [Member] | Collateralized Mortgage Backed Securities [Member]
Total debt securities	3,245	4,137
Fair Value, Inputs, Level 2 [Member] | Equity Securities Financial Services [Member]
Total equity securities	0	0
Fair Value, Inputs, Level 2 [Member] | Equity Securities, Other [Member]
Total equity securities	0	0
Fair Value, Inputs, Level 3 [Member]
Total debt securities	19,771	20,608
Total equity securities	0	0
Total debt and equity securities	19,771	20,608
Fair Value, Inputs, Level 3 [Member] | US Treasury Securities and Obligation [Member]
Total debt securities	0	0
Fair Value, Inputs, Level 3 [Member] | Corporate Bond Securities [Member]
Total debt securities	0	0
Fair Value, Inputs, Level 3 [Member] | Collateralized Corporate Bank Loans [Member]
Total debt securities	983	1,186
Fair Value, Inputs, Level 3 [Member] | Municipal Bonds [Member]
Total debt securities	18,788	19,422
Fair Value, Inputs, Level 3 [Member] | Collateralized Mortgage Backed Securities [Member]
Total debt securities	0	0
Fair Value, Inputs, Level 3 [Member] | Equity Securities Financial Services [Member]
Total equity securities	0	0
Fair Value, Inputs, Level 3 [Member] | Equity Securities, Other [Member]
Total equity securities	$ 0	$ 0