Investments, Part III (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013
Schedule of investments aggregated by industry [Abstract]
Carrying Value	$ 235,429		$ 235,429		$ 228,961
Amortized Cost	224,699		224,699		219,417
Unrealized Gains (Losses)	10,730		10,730		9,544
Available-for-sale securities, continuous unrealized loss position, Fair Value [Abstract]
Less than 12 months	57,140		57,140		105,821
12 months or longer	21,197		21,197		6,938
Total	78,337		78,337		112,759
Available-for-sale securities, continuous unrealized loss position, Unrealized Losses [Abstract]
Less than 12 months			827		4,542
12 months or longer			1,516		1,264
Total			2,343		5,806
U.S. Treasury securities and obligations of U.S. Government agencies and authorities [Member]
Schedule of investments aggregated by industry [Abstract]
Carrying Value	33,497		33,497		17,240
Amortized Cost	32,890		32,890		16,874
Unrealized Gains (Losses)	607		607		366
Available-for-sale securities, continuous unrealized loss position, Fair Value [Abstract]
Less than 12 months	12,326		12,326		8,326
12 months or longer	2,679		2,679		0
Total	15,005		15,005		8,326
Available-for-sale securities, continuous unrealized loss position, Unrealized Losses [Abstract]
Less than 12 months			62		210
12 months or longer			42		0
Total			104		210
Obligations of states and political subdivisions [Member]
Schedule of investments aggregated by industry [Abstract]
Carrying Value	5,203		5,203		7,611
Amortized Cost	4,615		4,615		7,226
Unrealized Gains (Losses)	588		588		385
Available-for-sale securities, continuous unrealized loss position, Fair Value [Abstract]
Less than 12 months					1,018
12 months or longer					0
Total					1,018
Available-for-sale securities, continuous unrealized loss position, Unrealized Losses [Abstract]
Less than 12 months					17
12 months or longer					0
Total					17
Utilities and telecom [Member]
Schedule of investments aggregated by industry [Abstract]
Carrying Value	15,225		15,225		18,006
Amortized Cost	12,587		12,587		16,150
Unrealized Gains (Losses)	2,638		2,638		1,856
Financial services [Member]
Schedule of investments aggregated by industry [Abstract]
Carrying Value	62,909		62,909		58,451
Amortized Cost	59,470		59,470		57,118
Unrealized Gains (Losses)	3,439		3,439		1,333
Other business - diversified [Member]
Schedule of investments aggregated by industry [Abstract]
Carrying Value	74,903		74,903		70,504
Amortized Cost	73,185		73,185		72,409
Unrealized Gains (Losses)	1,718		1,718		(1,905)
Other consumer - diversified [Member]
Schedule of investments aggregated by industry [Abstract]
Carrying Value	37,146		37,146		51,381
Amortized Cost	35,406		35,406		43,872
Unrealized Gains (Losses)	1,740		1,740		7,509
Other Investment [Member]
Schedule of investments aggregated by industry [Abstract]
Carrying Value	6,546		6,546		5,768
Amortized Cost	6,546		6,546		5,768
Unrealized Gains (Losses)	0		0		0
Corporate securities [Member]
Available-for-sale securities, continuous unrealized loss position, Fair Value [Abstract]
Less than 12 months	44,814		44,814		92,049
12 months or longer	18,518		18,518		6,938
Total	63,332		63,332		98,987
Available-for-sale securities, continuous unrealized loss position, Unrealized Losses [Abstract]
Less than 12 months			765		3,714
12 months or longer			1,474		1,264
Total			2,239		4,978
Redeemable preferred stocks [Member]
Available-for-sale securities, continuous unrealized loss position, Fair Value [Abstract]
Less than 12 months					704
12 months or longer					0
Total					704
Available-for-sale securities, continuous unrealized loss position, Unrealized Losses [Abstract]
Less than 12 months					41
12 months or longer					0
Total					41
Common and non-redeemable preferred stocks [Member]
Available-for-sale securities, continuous unrealized loss position, Fair Value [Abstract]
Less than 12 months					3,724
12 months or longer					0
Total					3,724
Available-for-sale securities, continuous unrealized loss position, Unrealized Losses [Abstract]
Less than 12 months					560
12 months or longer					0
Total					560
Schedule of Other Than Temporary Impairments [Abstract]
Investment impairments	$ 196	$ 0	$ 196	$ 0