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Note 6: Investment Securities: Non-Agency Collateralized Mortgage Obligation Policy (Details) (USD $) | 9 Months Ended
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Sep. 30, 2012 | Sep. 30, 2011
Non-Agency Collateralized Mortgage Obligations Book Value Other Than Temporary | $ 962,000 | $ 1,800,000
Non-Agency Collateralized Mortgage Obligations Book Value Other Than Temporary Pretax Charge to Income | $ 262,000 | $ 400,000

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Balance Type: | credit
Period Type: | duration

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Namespace Prefix: | fil_
Data Type: | xbrli:monetaryItemType
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