Investments, Part III (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Schedule of investments aggregated by industry [Abstract]
Carrying Value	$ 238,171us-gaap_Investments	$ 240,285us-gaap_Investments
Amortized Cost	219,126	226,010
Unrealized Gains	19,045	14,275
Available-for-sale securities, continuous unrealized loss position, Fair Value [Abstract]
Less than 12 months	33,235	47,691
12 months or longer	10,034	11,985
Total	43,269	59,676
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss [Abstract]
Less than 12 months	1,217	1,611
12 months or longer	1,111	1,384
Total	2,328	2,995
U.S. Treasury securities and obligations of U.S. Government agencies and authorities [Member]
Schedule of investments aggregated by industry [Abstract]
Carrying Value	20,433	33,898
Amortized Cost	19,989	32,469
Unrealized Gains	444	1,429
Available-for-sale securities, continuous unrealized loss position, Fair Value [Abstract]
Less than 12 months	4,626	3,695
12 months or longer	503	2,692
Total	5,129	6,387
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss [Abstract]
Less than 12 months	56	7
12 months or longer	1	23
Total	57	30
Obligations of states and political subdivisions [Member]
Schedule of investments aggregated by industry [Abstract]
Carrying Value	21,764	11,459
Amortized Cost	20,837	10,778
Unrealized Gains	927	681
Available-for-sale securities, continuous unrealized loss position, Fair Value [Abstract]
Less than 12 months	5,993
12 months or longer	0
Total	5,993
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss [Abstract]
Less than 12 months	36
12 months or longer	0
Total	36
Utilities and telecom [Member]
Schedule of investments aggregated by industry [Abstract]
Carrying Value	15,291	15,383
Amortized Cost	12,517	12,589
Unrealized Gains	2,774	2,794
Financial services [Member]
Schedule of investments aggregated by industry [Abstract]
Carrying Value	64,495	65,915
Amortized Cost	59,600	62,352
Unrealized Gains	4,895	3,563
Other business - diversified [Member]
Schedule of investments aggregated by industry [Abstract]
Carrying Value	73,494	70,365
Amortized Cost	71,907	69,940
Unrealized Gains	1,587	425
Other consumer - diversified [Member]
Schedule of investments aggregated by industry [Abstract]
Carrying Value	36,271	36,792
Amortized Cost	27,853	31,409
Unrealized Gains	8,418	5,383
Other Investment [Member]
Schedule of investments aggregated by industry [Abstract]
Carrying Value	6,423	6,473
Amortized Cost	6,423	6,473
Unrealized Gains	0	0
Corporate securities [Member]
Available-for-sale securities, continuous unrealized loss position, Fair Value [Abstract]
Less than 12 months	22,616	43,996
12 months or longer	9,531	9,293
Total	32,147	53,289
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss [Abstract]
Less than 12 months	1,125	1,604
12 months or longer	1,110	1,361
Total	$ 2,235	$ 2,965

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Amount before tax of unrealized gain (loss) in accumulated other comprehensive income (AOCI) on investments in debt and equity securities classified as available-for-sale.

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Amount of accumulated unrealized loss on investments in debt and equity securities classified as available-for-sale that have been in a continuous loss position for twelve months or longer.

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Sum of the carrying amounts as of the balance sheet date of all investments.

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