Investments Amortized Cost, Gross Unrealized Gains and Losses, and Estimated Fair Value (USD $) In Thousands, unless otherwise specified	3 Months Ended	12 Months Ended
	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Gross Unrealized Loss	$ 195	$ 199
Available-for-sale Securities, Gross Unrealized Gain	873	895
Available-for-sale Securities, Equity Securities	9,982	7,137
Available-for-sale Securities	51,456	54,151
Available-for-sale Securities, Debt Maturities, Amortized Cost Basis	50,778	53,455
US Government Agencies Debt Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Debt Securities, Amortized Cost Basis	15,255	17,777
Available-for-sale Securities, Gross Unrealized Loss	21	30
Available-for-sale Securities, Gross Unrealized Gain	531	591
Available-for-sale Securities	15,765	18,338	18,338
Foreign Government Debt Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Debt Securities, Amortized Cost Basis	4,417	4,235
Available-for-sale Securities, Gross Unrealized Loss	161	153
Available-for-sale Securities, Gross Unrealized Gain	0	0
Available-for-sale Securities	4,256	4,082	4,082
US States and Political Subdivisions Debt Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Debt Securities, Amortized Cost Basis	6,118	6,126
Available-for-sale Securities, Gross Unrealized Loss	0	0
Available-for-sale Securities, Gross Unrealized Gain	138	105
Available-for-sale Securities	6,256	6,231	6,231
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Debt Securities, Amortized Cost Basis	1,952	1,993
Available-for-sale Securities, Gross Unrealized Loss	1	2
Available-for-sale Securities, Gross Unrealized Gain	16	15
Available-for-sale Securities	1,967	2,006	2,006
Asset-backed Securities, Securitized Loans and Receivables [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Debt Securities, Amortized Cost Basis	4,489	3,996
Available-for-sale Securities, Gross Unrealized Loss	2	3
Available-for-sale Securities, Gross Unrealized Gain	4	1
Available-for-sale Securities	4,491	3,994	3,994
Corporate Debt Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Debt Securities, Amortized Cost Basis	18,547	19,328
Available-for-sale Securities, Gross Unrealized Loss	10	11
Available-for-sale Securities, Gross Unrealized Gain	184	183
Available-for-sale Securities	18,721	19,500	19,500
Equity Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Gross Unrealized Loss	93	40
Available-for-sale Securities, Gross Unrealized Gain	4,972	3,623
Available-for-sale Securities, Equity Securities	9,982	7,137
Available-for-sale Equity Securities, Amortized Cost Basis	5,103	3,554
Available-for-sale Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Gross Unrealized Loss	288	239
Available-for-sale Securities, Gross Unrealized Gain	5,845	4,518
Available-for-sale Securities, Equity Securities	61,438	61,288
Available-for-sale Equity Securities, Amortized Cost Basis	$ 55,881	$ 57,009