Note 2. Investment Securities: Other than Temporary Impairment, Credit Losses Recognized in Earnings (Details) - Available-for-sale Securities - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2013	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2012
Other than Temporary Impairment, Credit Losses Recognized in Earnings, Credit Losses on Debt Securities Held	$ 473	$ 473	$ 473	$ 1,976
Other than Temporary Impairment, Credit Losses Recognized in Earnings, Reductions, Securities Sold	$ 1,503

The cumulative amount of credit losses recognized in earnings related to debt securities held for which a portion of an other than temporary impairment (OTTI) was recognized in other comprehensive income (a component of shareholders' equity).

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27340-111563

Name:	us-gaap_OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsCreditLossesOnDebtSecuritiesHeld
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant