Note 3. Investment Securities: Realized Gain (Loss) on Investments (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Available for sale Securities Gross Realized Gain Loss Excluding Other Than Temporary Impairments	$ 1,641	$ 2,045	$ 7,704	$ 18,498
Trading Securities, Realized Gain (Loss)	321	744	351	1,129
Other Realized Gain (Loss) Excluding Other Than Temporary Impairments	(108)	(199)	(683)	(853)
Marketable Securities, Gain (Loss), Excluding Other than Temporary Impairments	1,854	2,590	7,372	18,774
Trading Securities, Change in Unrealized Holding Gain (Loss)	(1,010)	(173)	(458)	(3)
Marketable Securities, Unrealized Gain (Loss), Excluding Other than Temporary Impairments	(1,010)	(173)	(458)	(3)
Net realized investment gains	844	2,417	6,914	18,771
Debt Securities
Available for sale Securities Gross Realized Gain Loss Excluding Other Than Temporary Impairments	1,641	2,045	7,709	18,321
Preferred Stock
Available for sale Securities Gross Realized Gain Loss Excluding Other Than Temporary Impairments			$ (5)	$ 177