Note 4. Investment Securities: Other than Temporary Impairment, Credit Losses Recognized in Earnings (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2013	Dec. 31, 2012
Details
Other than Temporary Impairment, Credit Losses Recognized in Earnings, Credit Losses on Debt Securities Held	$ 2,555	$ 1,976	$ 1,976
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	$ 1,979	$ 1,976	$ 1,976