Investments, Part II (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Schedule of investments aggregated by industry [Abstract]
Carrying Value	$ 246,892	$ 229,785
Amortized Cost	216,642	210,072
Unrealized Gain (Losses)	30,250	19,713
Available-for-sale securities, continuous unrealized loss position, Fair Value [Abstract]
Less than 12 months	13,516	31,499
12 months or longer	1,600	5,654
Total	15,116	37,153
Available-for-sale securities, continuous unrealized loss position, Unrealized Losses [Abstract]
Less than 12 months	189	1,288
12 months or longer	400	883
Total	589	2,171
Recorded investment impairments due to other than temporary declines in values for the period	0	1,155
U.S. Treasury securities and obligations of U.S. Government agencies and authorities [Member]
Schedule of investments aggregated by industry [Abstract]
Carrying Value	27,512	35,922
Amortized Cost	22,894	31,736
Unrealized Gain (Losses)	4,618	4,186
Obligations of states and political subdivisions [Member]
Schedule of investments aggregated by industry [Abstract]
Carrying Value	17,761	17,030
Amortized Cost	15,247	15,273
Unrealized Gain (Losses)	2,514	1,757
Utilities and telecom [Member]
Schedule of investments aggregated by industry [Abstract]
Carrying Value	19,219	22,469
Amortized Cost	15,757	19,326
Unrealized Gain (Losses)	3,462	3,143
Financial services [Member]
Schedule of investments aggregated by industry [Abstract]
Carrying Value	56,077	44,624
Amortized Cost	51,702	45,319
Unrealized Gain (Losses)	4,375	(695)
Other business - diversified [Member]
Schedule of investments aggregated by industry [Abstract]
Carrying Value	66,875	56,668
Amortized Cost	59,628	51,709
Unrealized Gain (Losses)	7,247	4,959
Other consumer - diversified [Member]
Schedule of investments aggregated by industry [Abstract]
Carrying Value	55,269	48,983
Amortized Cost	47,235	42,620
Unrealized Gain (Losses)	8,034	6,363
Other Investment [Member]
Schedule of investments aggregated by industry [Abstract]
Carrying Value	4,179	4,089
Amortized Cost	4,179	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	8,806	30,675
12 months or longer	1,600	1,602
Total	10,406	32,277
Available-for-sale securities, continuous unrealized loss position, Unrealized Losses [Abstract]
Less than 12 months	147	1,112
12 months or longer	400	398
Total	547	1,510
Recorded investment impairments due to other than temporary declines in values for the period	0	965
Redeemable preferred stocks [Member]
Available-for-sale securities, continuous unrealized loss position, Fair Value [Abstract]
Less than 12 months	1,216	0
12 months or longer	0	2,807
Total	1,216	2,807
Available-for-sale securities, continuous unrealized loss position, Unrealized Losses [Abstract]
Less than 12 months	3	0
12 months or longer	0	462
Total	3	462
Common and non-redeemable preferred stocks [Member]
Available-for-sale securities, continuous unrealized loss position, Fair Value [Abstract]
Less than 12 months	3,494	824
12 months or longer	0	1,245
Total	3,494	2,069
Available-for-sale securities, continuous unrealized loss position, Unrealized Losses [Abstract]
Less than 12 months	39	176
12 months or longer	0	23
Total	39	199
Related party common stocks [Member]
Available-for-sale securities, continuous unrealized loss position, Unrealized Losses [Abstract]
Recorded investment impairments due to other than temporary declines in values for the period	$ 0	$ 190