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10) Reinsurance, Commitments and Contingencies: Mortgage Loan Loss Settlements (Details) - USD ($) | Dec. 31, 2017 | Dec. 31, 2016
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Details |  |
Amounts accrued for loan losses | $ 2,572,000 | $ 628,000

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Data Type: | xbrli:monetaryItemType
Balance Type: | debit
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- References No definition available. + Details
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Namespace Prefix: | us-gaap_
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Balance Type: | na
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