2) Investments: Held-to-maturity Securities (Details) - USD ($)	12 Months Ended
Dec. 31, 2017	Dec. 31, 2016
HeldToMaturitySecuritiesEstimatedFairValue	$ 241,498,409	$ 191,850,749
Held-to-maturity Securities, Amortized Cost before Other than Temporary Impairment	228,397,623	184,979,644
Held-to-maturity Securities, Unrecognized Holding Gain	14,921,048	11,078,349
Held-to-maturity Securities, Unrecognized Holding Loss	(1,820,262)	(4,207,244)
Mortgage loans held for investment	204,210,885	148,990,732
Mortgage loans held for investment, unamortized deferred loan fees, net	(1,659,828)	(190,846)
Allowance for losses on mortgage loans held for investment	(1,768,796)	(1,748,783)
Real estate held for investment, net of depreciation	141,298,706	145,165,921
Policy loans	6,531,352	6,694,148
Insurance assignments	36,301,739	33,548,079
Federal Home Loan Bank stock	689,400	662,100
Other investments at estimated fair value	3,219,622	1,765,752
Allowance for doubtful accounts on other investments and policy loans	(846,641)	(1,119,630)
Policy loans and other investments	45,895,472	41,599,246
Accrued investment income	3,644,077	2,972,596
Total investments	629,484,618	561,179,435
Promissory notes		48,797
Short-term investments at amortized cost		27,560,040
Residential Mortgage
Mortgage loans held for investment	102,527,111	58,593,622
Real estate held for investment, net of depreciation	68,329,917	76,191,985
Residential Construction
Mortgage loans held for investment	50,157,533	40,800,117
Commercial Loan
Mortgage loans held for investment	54,954,865	51,536,622
Real estate held for investment, net of depreciation	72,968,789	68,973,936
US Treasury and Government
HeldToMaturitySecuritiesEstimatedFairValue	53,709,470	4,657,982
Held-to-maturity Securities, Amortized Cost before Other than Temporary Impairment	54,077,069	4,475,065
Held-to-maturity Securities, Unrecognized Holding Gain	211,824	249,028
Held-to-maturity Securities, Unrecognized Holding Loss	(579,423)	(66,111)
US States and Political Subdivisions Debt Securities
HeldToMaturitySecuritiesEstimatedFairValue	5,884,535	6,037,490
Held-to-maturity Securities, Amortized Cost before Other than Temporary Impairment	5,843,176	6,017,225
Held-to-maturity Securities, Unrecognized Holding Gain	112,372	153,514
Held-to-maturity Securities, Unrecognized Holding Loss	(71,013)	(133,249)
Corporate Debt Securities
HeldToMaturitySecuritiesEstimatedFairValue	171,679,675	171,089,612
Held-to-maturity Securities, Amortized Cost before Other than Temporary Impairment	158,350,727	164,375,636
Held-to-maturity Securities, Unrecognized Holding Gain	14,336,452	10,440,989
Held-to-maturity Securities, Unrecognized Holding Loss	(1,007,504)	(3,727,013)
Collateralized Mortgage Backed Securities
HeldToMaturitySecuritiesEstimatedFairValue	9,551,537	9,428,612
Held-to-maturity Securities, Amortized Cost before Other than Temporary Impairment	9,503,016	9,488,083
Held-to-maturity Securities, Unrecognized Holding Gain	210,652	221,400
Held-to-maturity Securities, Unrecognized Holding Loss	(162,131)	(280,871)
Redeemable Preferred Stock
HeldToMaturitySecuritiesEstimatedFairValue	673,192	637,053
Held-to-maturity Securities, Amortized Cost before Other than Temporary Impairment	623,635	623,635
Held-to-maturity Securities, Unrecognized Holding Gain	49,748	13,418
Held-to-maturity Securities, Unrecognized Holding Loss	(191)
Industrial, miscellaneous and all other equity securities
Available-for-sale Securities, Amortized Cost Basis	6,002,931	10,323,238
Available-for-sale Debt Securities Gross Unrealized Gain	667,593	447,110
Available-for-sale Debt Securities, Gross Unrealized Loss	(632,669)	(859,092)
AvailableForSaleSecuritiesEstimatedFairValue	6,037,855	9,911,256
Equity Securities
Available-for-sale Securities, Amortized Cost Basis	6,002,931	10,323,238
Available-for-sale Debt Securities Gross Unrealized Gain	667,593	447,110
Available-for-sale Debt Securities, Gross Unrealized Loss	(632,669)	(859,092)
AvailableForSaleSecuritiesEstimatedFairValue	$ 6,037,855	$ 9,911,256

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Represents the monetary amount of Federal Home Loan Bank stock, as of the indicated date.

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Represents the monetary amount of HeldToMaturitySecuritiesEstimatedFairValue, as of the indicated date.

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Represents the monetary amount of Insurance assignments, as of the indicated date.

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Represents the monetary amount of Mortgage loans on real estate and construction, as of the indicated date.

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Represents the monetary amount of Mortgage loans on real estate and construction, unamortized deferred loan fees, net, as of the indicated date.

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Represents the monetary amount of Other investments at estimated fair value, as of the indicated date.

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

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Represents the monetary amount of Policy loans and other investments, as of the indicated date.

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Represents the monetary amount of Promissory notes, as of the indicated date.

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Represents the monetary amount of Short-term investments at amortized cost, as of the indicated date.

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Interest, dividends, rents, ancillary and other revenues earned but not yet received by the entity on its investments.

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The valuation allowance as of the balance sheet date to reduce the gross amount of receivables to estimated net realizable value, which would be presented in parentheses on the face of the balance sheet.

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The reserve to cover probable credit losses related to specifically identified fixed maturity real estate loans as well as probable credit losses inherent in the remainder of that loan portfolio.

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Amount of unrealized gain before deducting unrealized loss on investments in debt securities classified as available-for-sale securities.

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Amount of unrealized loss before deducting unrealized gain on investments in available-for-sale debt securities.

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This item represents the cost of debt and equity securities, which are categorized neither as held-to-maturity nor trading, net of adjustments including accretion, amortization, collection of cash, previous other-than-temporary impairments recognized in earnings (less any cumulative-effect adjustments recognized, as defined), and fair value hedge accounting adjustments, if any.

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Amount before other than temporary impairment (OTTI) accretion, of investments in debt securities classified as held-to-maturity.

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Amount of unrecognized gain before loss on investments in held-to-maturity securities.

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Amount of unrecognized loss before gain on investments in held-to-maturity securities. Excludes write-down for other than temporary impairment (OTTI).

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Sum of the carrying amounts as of the balance sheet date of all investments.

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Amount of real estate investments, net of accumulated depreciation, which may include the following: (1) land available-for-sale; (2) land available-for-development; (3) investments in building and building improvements; (4) tenant allowances; (5) developments in-process; (6) rental properties; (7) other real estate investments; (8) real estate joint ventures; and (9) unconsolidated real estate and other joint ventures not separately presented.

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