Investments, Part II (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011
Schedule of investments aggregated by industry [Abstract]
Carrying Value	$ 245,911	$ 229,785
Amortized Cost	214,589	210,072
Unrealized Gain (Losses)	31,322	19,713
Available-for-sale securities, continuous unrealized loss position, Fair Value [Abstract]
Less than 12 months	5,783	31,499
12 months or longer	2,556	5,654
Total	8,339	37,153
Available-for-sale securities, continuous unrealized loss position, Unrealized Losses [Abstract]
Less than 12 months	54	1,288
12 months or longer	444	883
Total	498	2,171
U.S. Treasury securities and obligations of U.S. Government agencies and authorities [Member]
Schedule of investments aggregated by industry [Abstract]
Carrying Value	27,548	35,922
Amortized Cost	22,900	31,736
Unrealized Gain (Losses)	4,648	4,186
Obligations of states and political subdivisions [Member]
Schedule of investments aggregated by industry [Abstract]
Carrying Value	17,849	17,030
Amortized Cost	15,253	15,273
Unrealized Gain (Losses)	2,596	1,757
Utilities and telecom [Member]
Schedule of investments aggregated by industry [Abstract]
Carrying Value	19,255	22,469
Amortized Cost	15,813	19,326
Unrealized Gain (Losses)	3,442	3,143
Financial services [Member]
Schedule of investments aggregated by industry [Abstract]
Carrying Value	56,819	44,624
Amortized Cost	53,033	45,319
Unrealized Gain (Losses)	3,786	(695)
Other business - diversified [Member]
Schedule of investments aggregated by industry [Abstract]
Carrying Value	66,066	56,668
Amortized Cost	58,425	51,709
Unrealized Gain (Losses)	7,641	4,959
Other consumer - diversified [Member]
Schedule of investments aggregated by industry [Abstract]
Carrying Value	54,190	48,983
Amortized Cost	44,981	42,620
Unrealized Gain (Losses)	9,209	6,363
Other Investment [Member]
Schedule of investments aggregated by industry [Abstract]
Carrying Value	4,184	4,089
Amortized Cost	4,184	4,089
Unrealized Gain (Losses)	0	0
Corporate securities [Member]
Available-for-sale securities, continuous unrealized loss position, Fair Value [Abstract]
Less than 12 months	2,888	30,675
12 months or longer	1,560	1,602
Total	4,448	32,277
Available-for-sale securities, continuous unrealized loss position, Unrealized Losses [Abstract]
Less than 12 months	30	1,112
12 months or longer	440	398
Total	470	1,510
Redeemable preferred stocks [Member]
Available-for-sale securities, continuous unrealized loss position, Fair Value [Abstract]
Less than 12 months	1,909	0
12 months or longer	996	2,807
Total	2,905	2,807
Available-for-sale securities, continuous unrealized loss position, Unrealized Losses [Abstract]
Less than 12 months	10	0
12 months or longer	4	462
Total	14	462
Common and non-redeemable preferred stocks [Member]
Available-for-sale securities, continuous unrealized loss position, Fair Value [Abstract]
Less than 12 months	986	824
12 months or longer	0	1,245
Total	986	2,069
Available-for-sale securities, continuous unrealized loss position, Unrealized Losses [Abstract]
Less than 12 months	14	176
12 months or longer	0	23
Total	$ 14	$ 199