Note 4. Investments: Other than Temporary Impairment, Credit Losses Recognized in Earnings (Details) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Dec. 31, 2010
Other than Temporary Impairment, Credit Losses Recognized in Earnings, Credit Losses on Debt Securities Held	$ 2,555	$ 1,763	$ 1,763
Other than Temporary Impairment, Credit Losses Recognized in Earnings, Additions, No Previous Impairment	473
Other than Temporary Impairment, Credit Losses Recognized in Earnings, Additions, Additional Credit Losses	148
Other than Temporary Impairment, Credit Losses Recognized in Earnings, Reductions, Securities Sold	(576)
Other than Temporary Impairment, Credit Losses Recognized in Earnings, Credit Losses on Debt Securities Held	$ 2,600	$ 1,763	$ 1,763