Note 5. Net Realized Investment Gains: Realized Gain (Loss) on Investments (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Available-for-sale Securities, Realized Losses, Excluding Other than Temporary Impairments	$ (22)	$ (6)	$ 833	$ 150
Trading Securities, Realized Gain (Loss)	75	25	134	38
Available-for-sale Securities, Transfers to Trading, Gains (Losses), Excluding Other than Temporary Impairments				20
Trading Securities, Change in Unrealized Holding Gain (Loss)	(7)	11	6	(8)
Marketable Securities, Unrealized Gain (Loss), Excluding Other than Temporary Impairments	(7)	11	6	12
Net realized investment gains (losses)	46	30	973	200
Debt Securities
Available-for-sale Securities, Realized Losses, Excluding Other than Temporary Impairments	(22)	(4)	810	152
Preferred Stock
Available-for-sale Securities, Realized Losses, Excluding Other than Temporary Impairments		$ (2)	$ 23	$ (2)