Investments Reconciliation, Investments by Category (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Amortized Cost Basis	$ 335,351	$ 288,776
Available-for-sale Securities, Gross Unrealized Gains	4,397	3,513
Available-for-sale Securities, Gross Unrealized Losses	1,934	3,363
Available-for-sale Securities, Debt Securities	267,420	273,024
Available-for-sale Securities, Equity Securities	15,897	15,602
Other Long-term Investments	300	300
Total investments	337,814	288,926
U.S. government and agency securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Amortized Cost Basis	88,354	98,621
Available-for-sale Securities, Gross Unrealized Gains	35	28
Available-for-sale Securities, Gross Unrealized Losses	829	1,169
Available-for-sale Securities, Debt Securities	87,560	97,480
Foreign Government Debt Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Amortized Cost Basis	3,284	3,287
Available-for-sale Securities, Gross Unrealized Gains	0	0
Available-for-sale Securities, Gross Unrealized Losses	10	60
Available-for-sale Securities, Debt Securities	3,274	3,227
States, municipalities and political subdivisions [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Amortized Cost Basis	50,372	45,556
Available-for-sale Securities, Gross Unrealized Gains	1,043	654
Available-for-sale Securities, Gross Unrealized Losses	223	433
Available-for-sale Securities, Debt Securities	51,192	45,777
Public Utility, Bonds [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Amortized Cost Basis	9,088	9,103
Available-for-sale Securities, Gross Unrealized Gains	172	122
Available-for-sale Securities, Gross Unrealized Losses	53	92
Available-for-sale Securities, Debt Securities	9,207	9,133
All Other Corporate Bonds [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Amortized Cost Basis	115,707	118,084
Available-for-sale Securities, Gross Unrealized Gains	1,210	792
Available-for-sale Securities, Gross Unrealized Losses	730	1,469
Available-for-sale Securities, Debt Securities	116,187	117,407
Fixed Maturities [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Amortized Cost Basis	266,805	274,651
Available-for-sale Securities, Gross Unrealized Gains	2,460	1,596
Available-for-sale Securities, Gross Unrealized Losses	1,845	3,223
Available-for-sale Securities, Debt Securities	267,420	273,024
Mutual Fund [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Amortized Cost Basis	54,197
Available-for-sale Securities, Gross Unrealized Gains	0
Available-for-sale Securities, Gross Unrealized Losses	0
Available-for-sale Securities, Equity Securities	54,197
Public Utility, Equities [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Amortized Cost Basis	824	804
Available-for-sale Securities, Gross Unrealized Gains	30	23
Available-for-sale Securities, Gross Unrealized Losses	10	20
Available-for-sale Securities, Equity Securities	844	807
Other Common Stock [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Amortized Cost Basis	13,095	12,749
Available-for-sale Securities, Gross Unrealized Gains	1,907	1,894
Available-for-sale Securities, Gross Unrealized Losses	75	97
Available-for-sale Securities, Equity Securities	14,927	14,546
Nonredeemable Preferred Stock [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Amortized Cost Basis	130	272
Available-for-sale Securities, Gross Unrealized Gains	0	0
Available-for-sale Securities, Gross Unrealized Losses	4	23
Available-for-sale Securities, Equity Securities	126	249
Equity Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Amortized Cost Basis	68,246	13,825
Available-for-sale Securities, Gross Unrealized Gains	1,937	1,917
Available-for-sale Securities, Gross Unrealized Losses	89	140
Available-for-sale Securities, Equity Securities	70,094	15,602
Other Long-term Investments [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Amortized Cost Basis	300	300
Available-for-sale Securities, Gross Unrealized Gains	0	0
Available-for-sale Securities, Gross Unrealized Losses	0	0
Other Long-term Investments	$ 300	$ 300