3) Investments: Investments Classified by Contractual Maturity Date (Details) - USD ($)	Mar. 31, 2017	Dec. 31, 2016
AmortizedCost	$ 186,445,498	$ 184,979,644
Represents the monetary amount of HeldToMaturitySecuritiesEstimatedFairValue, as of the indicated date.	195,986,579	191,850,749
Available-for-sale Securities, Amortized Cost Basis	11,139,482
Represents the monetary amount of AvailableForSaleSecuritiesEstimatedFairValue, as of the indicated date.	10,735,239
Collateralized Mortgage Backed Securities
AmortizedCost	9,753,206	9,488,083
Represents the monetary amount of HeldToMaturitySecuritiesEstimatedFairValue, as of the indicated date.	9,765,624	9,428,612
Redeemable Preferred Stock
AmortizedCost	623,635	623,635
Represents the monetary amount of HeldToMaturitySecuritiesEstimatedFairValue, as of the indicated date.	629,962	$ 637,053
Common Stock
Available-for-sale Securities, Amortized Cost Basis	11,139,482
Represents the monetary amount of AvailableForSaleSecuritiesEstimatedFairValue, as of the indicated date.	10,735,239
DueIn2017Member
AmortizedCost	5,625,049
Represents the monetary amount of HeldToMaturitySecuritiesEstimatedFairValue, as of the indicated date.	5,677,028
DueIn2018Through2021Member
AmortizedCost	42,733,718
Represents the monetary amount of HeldToMaturitySecuritiesEstimatedFairValue, as of the indicated date.	44,794,103
DueIn2022Through2026Member
AmortizedCost	43,263,792
Represents the monetary amount of HeldToMaturitySecuritiesEstimatedFairValue, as of the indicated date.	45,020,917
DueAfter2026Member
AmortizedCost	84,446,098
Represents the monetary amount of HeldToMaturitySecuritiesEstimatedFairValue, as of the indicated date.	$ 90,098,945