3) Investments: Schedule of Allowance for loan losses as a contra-asset account (Details) - USD ($)	9 Months Ended	12 Months Ended
Sep. 30, 2018	Dec. 31, 2017	Dec. 31, 2016
Financing Receivable, Allowance for Credit Losses	$ 1,470,158	$ 1,768,796	$ 1,748,783
Allowance for credit losses, Charge-offs	(84,902)	(416,251)
Allowance for Credit Losses, Provision	(213,736)	436,264
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	75,064	237,560
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	1,395,094	1,531,236
Mortgage loans	184,131,145	207,639,509
Financing Receivable, Individually Evaluated for Impairment	4,362,705	5,385,386
Financing Receivable, Collectively Evaluated for Impairment	179,768,440	202,254,123
Commercial Loan
Financing Receivable, Allowance for Credit Losses	187,129	187,129	187,129
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	187,129	187,129
Mortgage loans	32,869,447	54,954,865
Financing Receivable, Individually Evaluated for Impairment	195,911	0
Financing Receivable, Collectively Evaluated for Impairment	32,673,536	54,954,865
Residential Mortgage
Financing Receivable, Allowance for Credit Losses	1,247,809	1,546,447	1,461,540
Allowance for credit losses, Charge-offs	(84,902)	(351,357)
Allowance for Credit Losses, Provision	(213,736)	436,264
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	75,064	237,560
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	1,172,745	1,308,887
Mortgage loans	79,930,807	102,527,111
Financing Receivable, Individually Evaluated for Impairment	3,088,265	4,923,552
Financing Receivable, Collectively Evaluated for Impairment	76,842,542	97,603,559
Residential construction
Financing Receivable, Allowance for Credit Losses	35,220	35,220	$ 100,114
Allowance for credit losses, Charge-offs		(64,894)
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	35,220	35,220
Mortgage loans	71,330,891	50,157,533
Financing Receivable, Individually Evaluated for Impairment	1,078,529	461,834
Financing Receivable, Collectively Evaluated for Impairment	$ 70,252,362	$ 49,695,699

Represents the monetary amount of Allowance for credit losses, Charge-offs, during the indicated time period.

No definition available.

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

- Definition

Represents the monetary amount of Allowance for Credit Losses, Provision, during the indicated time period.

+ References

No definition available.

+ Details

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Namespace Prefix:	fil_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Represents the monetary amount of Mortgage loans, as of the indicated date.

+ References

No definition available.

+ Details

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

- Definition

A valuation allowance for financing receivables that are expected to be uncollectible.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 11B
-Subparagraph (c)(1)
-URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953423-111524

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- Definition

The valuation allowance for financing receivables that are expected to be uncollectible that were collectively evaluated for impairment.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 11B
-Subparagraph (g)
-URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953423-111524

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- Definition

Amount of valuation allowance for financing receivables that are expected to be uncollectible that were individually evaluated for impairment.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 11B
-Subparagraph (g)
-URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953423-111524

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- Definition

The balance of financing receivables that were collectively evaluated for impairment.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 11B
-Subparagraph (h)
-URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953423-111524

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- Definition

The balance of financing receivables that were individually evaluated for impairment.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 11B
-Subparagraph (h)
-URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953423-111524

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