3) Investments: Held-to-maturity Securities (Details) - USD ($)	9 Months Ended	12 Months Ended
	Sep. 30, 2017	Dec. 31, 2016
AmortizedCost	$ 230,811,272	$ 184,979,644
Held-to-maturity Securities, Unrecognized Holding Gain	14,756,889	11,078,349
Held-to-maturity Securities, Unrecognized Holding Loss	(1,760,599)	(4,207,244)
Represents the monetary amount of HeldToMaturitySecuritiesEstimatedFairValue, as of the indicated date.	243,807,562	191,850,749
Mortgage loans on real estate and construction	147,300,691	148,990,732
Mortgage loans on real estate and construction, unamortized deferred loan fees, net	(637,735)	(190,846)
Mortgage loans on real estate and construction, allowance for losses	(2,051,818)	(1,748,783)
Real estate held for investment, net of depreciation	150,568,998	145,165,921
Policy loans	6,677,924	6,694,148
Insurance assignments	33,340,431	33,548,079
Federal Home Loan Bank stock	689,400	662,100
Other investments	2,923,681	1,765,752
Allowance for doubtful accounts	(1,142,287)	(1,119,630)
Total policy loans and other investments	42,489,149	41,599,246
Short-term investments at amortized cost	17,830,990	27,560,040
Accrued investment income	3,391,688	2,972,596
Promissory notes		48,797
Residential Mortgage
Mortgage loans on real estate and construction	65,759,761	58,593,622
Real estate held for investment, net of depreciation	69,469,220	76,191,985
Residential Construction
Mortgage loans on real estate and construction	41,306,722	40,800,117
Commercial Loan
Mortgage loans on real estate and construction	42,923,761	51,536,622
Real estate held for investment, net of depreciation	81,099,778	68,973,936
US Treasury and Government
AmortizedCost	54,279,156	4,475,065
Held-to-maturity Securities, Unrecognized Holding Gain	237,071	249,028
Held-to-maturity Securities, Unrecognized Holding Loss	(226,543)	(66,111)
Represents the monetary amount of HeldToMaturitySecuritiesEstimatedFairValue, as of the indicated date.	54,289,684	4,657,982
US States and Political Subdivisions Debt Securities
AmortizedCost	5,865,790	6,017,225
Held-to-maturity Securities, Unrecognized Holding Gain	124,685	153,514
Held-to-maturity Securities, Unrecognized Holding Loss	(77,272)	(133,249)
Represents the monetary amount of HeldToMaturitySecuritiesEstimatedFairValue, as of the indicated date.	5,913,203	6,037,490
Corporate Debt Securities
AmortizedCost	160,278,125	164,375,636
Held-to-maturity Securities, Unrecognized Holding Gain	14,088,157	10,440,989
Held-to-maturity Securities, Unrecognized Holding Loss	(1,285,361)	(3,727,013)
Represents the monetary amount of HeldToMaturitySecuritiesEstimatedFairValue, as of the indicated date.	173,080,921	171,089,612
Collateralized Mortgage Backed Securities
AmortizedCost	9,764,566	9,488,083
Held-to-maturity Securities, Unrecognized Holding Gain	253,573	221,400
Held-to-maturity Securities, Unrecognized Holding Loss	(171,423)	(280,871)
Represents the monetary amount of HeldToMaturitySecuritiesEstimatedFairValue, as of the indicated date.	9,846,716	9,428,612
Redeemable Preferred Stock
AmortizedCost	623,635	623,635
Held-to-maturity Securities, Unrecognized Holding Gain	53,403	13,418
Represents the monetary amount of HeldToMaturitySecuritiesEstimatedFairValue, as of the indicated date.	677,038	637,053
Industrial, miscellaneous and all other equity securities
Available-for-sale Securities, Amortized Cost Basis	6,310,307	10,323,238
Available-for-sale Securities, Gross Unrealized Gain	467,132	447,110
AvailableForSaleSecuritiesGrossUnrealizedLosses	(819,951)	(859,092)
Represents the monetary amount of AvailableForSaleSecuritiesEstimatedFairValue, as of the indicated date.	5,957,488	9,911,256
Equity Securities
Available-for-sale Securities, Amortized Cost Basis	6,310,307	10,323,238
Available-for-sale Securities, Gross Unrealized Gain	467,132	447,110
AvailableForSaleSecuritiesGrossUnrealizedLosses	(819,951)	(859,092)
Represents the monetary amount of AvailableForSaleSecuritiesEstimatedFairValue, as of the indicated date.	$ 5,957,488	$ 9,911,256