Note 5. Investments: Other than Temporary Impairment, Credit Losses Recognized in Earnings (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2009
Other than Temporary Impairment, Credit Losses Recognized in Earnings, Credit Losses on Debt Securities Held	$ 145	$ 99	$ 99
Other than Temporary Impairment, Credit Losses Recognized in Earnings, Reductions, Securities Sold	(46)
Other than Temporary Impairment, Credit Losses Recognized in Earnings, Additions, Additional Credit Losses	189	46
Other than Temporary Impairment, Credit Losses Recognized in Earnings, Credit Losses on Debt Securities Held	$ 288	$ 145	$ 99