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21) Mortgage Servicing Rights: Assumptions used in determining MSR value (Details) | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018
Details |  |
Prepayment Speeds | 15.30% | 11.70%
Average Life in Years of MSR | 5.27 | 6.33
Discount Rate | 9.51 | 9.51

X
- Definition Represents the Average Life in Years of MSR, during the indicated time period. + References No definition available. + Details
Name: | fil_AverageLifeInYearsOfMsr
Namespace Prefix: | fil_
Data Type: | xbrli:decimalItemType
Balance Type: | na
Period Type: | duration

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- Definition Represents the Discount Rate, during the indicated time period. + References No definition available. + Details
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Namespace Prefix: | fil_
Data Type: | xbrli:decimalItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the Prepayment Speeds, during the indicated time period. + References No definition available. + Details
Name: | fil_PrepaymentSpeeds
Namespace Prefix: | fil_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

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- References No definition available. + Details
Name: | us-gaap_TextBlockAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration