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Note 2: Investments in Securities: Certain investments in debt securities reported at less than historical cost (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Details
Fair value investments reported less than historical cost	$ 116,200	$ 95,700
Fair value investments reported less than historical cost percentage of investment portfolio	31.10%	39.20%

X

- Definition

Represents the monetary amount of Fair value investments reported less than historical cost, as of the indicated date.

+ References

No definition available.

+ Details

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Namespace Prefix:	fil_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Represents the Fair value investments reported less than historical cost percentage of investment portfolio, as of the indicated date.

+ References

No definition available.

+ Details

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Namespace Prefix:	fil_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

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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